# EDGAR Filing Document

**Accession Number:** 0002018846
**File Stem:** 0000912938-26-000637
**Filing Date:** 2026-5
**Character Count:** 926812
**Document Hash:** c5c62df30c062dea54c2d003351209a8
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000912938-26-000637.hdr.sgml**: 20260518

**ACCESSION NUMBER**: 0000912938-26-000637

**CONFORMED SUBMISSION TYPE**: 485BPOS

**PUBLIC DOCUMENT COUNT**: 33

**FILED AS OF DATE**: 20260518

**DATE AS OF CHANGE**: 20260518

**EFFECTIVENESS DATE**: 20260519

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MFS Active Exchange Traded Funds Trust
- **CENTRAL INDEX KEY:** 0002018846

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0228

**FILING VALUES:**
- **FORM TYPE:** 485BPOS
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-23953
- **FILM NUMBER:** 26993009

**BUSINESS ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
- **BUSINESS PHONE:** 617-954-5000

**MAIL ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MFS Active Exchange Traded Funds Trust
- **CENTRAL INDEX KEY:** 0002018846

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0228

**FILING VALUES:**
- **FORM TYPE:** 485BPOS
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-278691
- **FILM NUMBER:** 26993008

**BUSINESS ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
- **BUSINESS PHONE:** 617-954-5000

**MAIL ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199

## Series and Classes Contracts Data

### MFS Active International Value ETF (Series ID: S000104938)

| Class ID   | Class Name                         | Ticker Symbol   |
|:---|:---|:---|
| C000275596 | MFS Active International Value ETF | MIVL            |

### MFS Blended Research Small-Mid Cap ETF (Series ID: S000104939)

| Class ID   | Class Name                             | Ticker Symbol   |
|:---|:---|:---|
| C000275597 | MFS Blended Research Small-Mid Cap ETF | BRSM            |

?xml version='1.0' encoding='ASCII'?

#### As filed with the Securities and Exchange Commission on May 18, 2026
1933 Act File No. 333-278691

1940 Act File No. 811-23953

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

_______________

FORM N-1A

REGISTRATION STATEMENT

UNDER THE SECURITIES ACT OF 1933

POST-EFFECTIVE AMENDMENT NO. 9

AND

REGISTRATION STATEMENT

UNDER THE INVESTMENT COMPANY ACT OF 1940

AMENDMENT NO. 9

## MFS <sup>®</sup> ACTIVE EXCHANGE TRADED FUNDS TRUST
(Exact Name of Registrant as Specified in Charter)

111 Huntington Avenue, Boston, Massachusetts 02199

(Address of Principal Executive Offices)

Registrant's Telephone Number, including Area Code: 617-954-5000

Christopher R. Bohane, Massachusetts Financial Services Company,

111 Huntington Avenue, Boston, Massachusetts 02199

(Name and Address of Agent for Service)

#### APPROXIMATE DATE OF PROPOSED PUBLIC OFFERING:
It is proposed that this filing will become effective (check appropriate box)

immediately upon filing pursuant to paragraph (b)

 on May 19, 2026, pursuant to paragraph (b)

 60 days after filing pursuant to paragraph (a)

 on [date], pursuant to paragraph (a)

 75 days after filing pursuant to paragraph (a)(2)

 on [date], pursuant to paragraph (a)(2) of rule 485

If appropriate, check the following box:

 this post-effective amendment designates a new effective date for a previously filed post-effective amendment

------

![](img_1b458c79babd4f2.jpg)

May 19, 2026

PROSPECTUS

## MFS <sup>®</sup> Active International Value ETF
The investment objective of the fund is to seek capital appreciation.

---

| |
|:---|
| &nbsp;&nbsp;**TICKER SYMBOL** |
| &nbsp;&nbsp;MIVL |

---

#### Table of contents

---

| | |
|:---|:---|
| [SUMMARY OF KEY INFORMATION](#x1x2) | [2](#x1x2) |
| [INVESTMENT OBJECTIVE, STRATEGIES, AND RISKS](#x2x2) | [5](#x2x2) |
| [MANAGEMENT OF THE FUND](#x3x2) | [8](#x3x2) |
| [ADDITIONAL INFORMATION ABOUT THE PURCHASE AND SALE OF FUND SHARES](#x4x2) | [9](#x4x2) |
| [OTHER INFORMATION](#x5x2) | [10](#x5x2) |
| [FINANCIAL HIGHLIGHTS](#x6x2) | [14](#x6x2) |

---

Principal U.S. Listing Exchange: The NYSE Arca, Inc. Exchange-traded fund (ETF) shares are not individually redeemable.

**The U.S. Securities and Exchange Commission (the SEC) has not approved or disapproved the fund's shares or determined whether this prospectus is accurate or complete. Anyone who tells you otherwise is committing a crime.**

EIL-PRO-051926

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MFS Active International Value ETF

#### Summary of Key Information

#### Investment Objective
The fund's investment objective is to seek capital appreciation.

#### Fees and Expenses
This table describes the fees and expenses that you may pay when you buy, hold, and sell shares of the fund. **Investors may also pay commissions or other fees to their financial intermediaries when they buy, hold, and sell shares of the fund, which are not reflected below.**

---

| | | |
|:---|:---|:---|
| **Shareholder Fees (fees paid directly from your investment):** | **Shareholder Fees (fees paid directly from your investment):** | **Shareholder Fees (fees paid directly from your investment):** |
|  | **Maximum Sales Charge (Load) <br>Imposed on Purchases (as a percentage of offering price)** | None |
|  | **Maximum Deferred Sales Charge (Load) <br>(as a percentage of original purchase price or redemption proceeds, whichever is less)** | None |

---

---

| | |
|:---|:---|
| **Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):** | **Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):** |
| Management Fee | 0.57% |
| Other Expenses<sup>1</sup> | <u>0.00%</u> |
| Total Annual Fund Operating Expenses | 0.57% |

---

1 The annual fund operating expenses are based on estimated "Other Expenses" for the current fiscal year expressed as a percentage of the fund's estimated average net assets during the period.

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MFS Active International Value ETF

#### Example
This example is intended to help you compare the cost of investing in the fund with the cost of investing in other funds. The example does not take into account brokerage commissions or other fees that you may pay to your financial intermediary when purchasing or selling shares of the fund.

The example assumes that: you invest $10,000 in the fund for the time periods indicated and you redeem your shares at the end of the time periods; your investment has a 5% return each year; and the fund's operating expenses remain the same.

Although your actual costs will likely be higher or lower, under these assumptions your costs would be:

---

| | | |
|:---|:---|:---|
|  | **1 YEAR** | **3 YEARS** |
| **Fund Shares** | $58  | $183  |

---

#### Portfolio Turnover
The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when shares are held in a taxable account. These transaction costs, which are not reflected in "Annual Fund Operating Expenses" or in the "Example," affect the fund's performance. The portfolio turnover rate for the fund is not available because the fund had not commenced operations as of the date of this prospectus.

#### Principal Investment Strategies
MFS (Massachusetts Financial Services Company, the fund's investment adviser) normally invests at least 80% of the fund's net assets in value companies. Value companies are companies that MFS believes are undervalued compared to their perceived worth in the marketplace. MFS considers a number of factors when determining whether a company is undervalued, including whether (i) the issuer is included in an index which is representative of value companies; (ii) the issuer is classified as a value company by an independent third party financial data provider and/or (iii) the issuer exhibits the characteristics of a value company, considering metrics such as historical and/or projected price-to-book, price-to-earnings, and price-to-cash flow ratios, enterprise value (the total value of the issuer's outstanding equity and debt) relative to earnings, and free cash flow yield compared to the applicable equity market and/or to issuers in the same sector or industry. In assessing the relative value of an issuer, MFS may also consider measures of financial quality, such as indicators of profitability (i.e., return on equity and return on invested capital), balance sheet strength (including leverage and interest coverage ratios), and capital allocation discipline. Value companies tend to have stock prices that are low relative to their earnings, dividends, assets, or other financial measures.

MFS normally invests the fund's assets primarily in foreign equity securities, including emerging market equity securities. Emerging market countries are countries with financial and capital markets in the development phase. Emerging market countries include countries located in Latin America, Asia, Africa, the Middle East, and developing countries of Europe, primarily Eastern Europe.

MFS normally invests the fund's assets primarily in common stocks and depositary receipts. Equity securities include common stocks, depositary receipts, and other securities that represent an ownership interest (or right to acquire an ownership interest) in a company or other issuer.

MFS may invest the fund's assets in securities of companies of any size.

MFS normally invests the fund's assets across different industries, sectors, countries, and regions, but MFS may invest a significant percentage of the fund's assets in issuers in a single industry, sector, country, or region.

MFS uses an active bottom-up investment approach to buying and selling investments for the fund. Investments are selected primarily based on fundamental analysis of individual issuers. In managing the fund, MFS also utilizes quantitative models to assist the portfolio management team in the portfolio construction and security selection process.

For purposes of the fund's 80% policy, net assets include the amount of any borrowings for investment purposes.

#### Principal Risks
As with any exchange-traded fund, the fund may not achieve its objective and/or you could lose money on your investment in the fund. An investment in the fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency.

The principal risks of investing in the fund are:

**Investment Selection Risk:** MFS' investment analysis, its development and use of quantitative models, and its selection of investments may not produce the intended results and/or can lead to an investment focus that results in the fund underperforming other funds with similar investment strategies and/or underperforming the markets in which the fund invests. The quantitative models used by MFS (both proprietary and third-party) may not produce the intended results for a variety of reasons, including the factors used in the models, the weight placed on each factor in the models, changes from the market factors' historical trends, changing sources of market return or market risk, and technical issues in the design, development, implementation, application, and maintenance of the models (e.g., incomplete, stale, or inaccurate data, human error, programming or other software issues, coding errors, and technology failures).

**Equity Market Risk/Company Risk:** Equity markets are volatile and can decline significantly in response to changes in, or investor perceptions of, issuer, market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions. These conditions can affect a single issuer or type of security, issuers within a broad market sector, industry or geographic region, or the equity markets in general. Certain events can have a dramatic adverse effect on equity markets and may lead to periods of high volatility in an equity market or a segment of an equity market. The value of an investment held by the fund may decline due to factors directly related to the issuer.

**Value Company Risk:** The stocks of value companies can continue to be undervalued for long periods of time and not realize their expected value and can be more volatile than the market in general.

**Foreign Risk:** Exposure to foreign markets through issuers or currencies can involve additional risks relating to market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions. These factors can make foreign investments, especially those tied economically to emerging markets or countries subject to sanctions or the threat of new or modified sanctions, more volatile and less liquid than U.S. investments. In addition, foreign markets can react differently to these conditions than the U.S. market.

**Emerging Markets Risk:** Investments tied economically to emerging markets, especially frontier markets, can involve additional and greater risks than the risks associated with investments in developed markets. Emerging markets can have less

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MFS Active International Value ETF

developed markets, greater custody and operational risk, less developed legal, regulatory, and accounting systems, greater government involvement in the economy, greater risk of new or inconsistent government treatment of or restrictions on issuers and instruments, and greater political, social, geopolitical, and economic instability than developed markets.

**Currency Risk:** The value of foreign currencies relative to the U.S. dollar fluctuates in response to market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions, and changes in currency exchange rates impact the financial condition of companies or other issuers and may change the value in U.S. dollars of investments denominated in foreign currencies.

**Focus Risk:** Issuers in a single industry, sector, country, or region can react similarly to market, currency, political, economic, regulatory, geopolitical, environmental, public health, and other conditions, and the fund's performance will be affected by the conditions in the industries, sectors, countries, and regions to which the fund is exposed. Furthermore, investments in particular industries, sectors, countries, or regions may be more volatile than the broader market as a whole.

**Liquidity Risk:** It may be difficult to value, and it may not be possible to sell, certain investments, types of investments, and/or investments in certain segments of the market, and the fund may have to sell certain of these investments at prices or times that are not advantageous in order to meet redemptions or other cash needs.

**Fluctuation of Net Asset Value and Share Price Risk:** The net asset value (NAV) per share of the fund will generally fluctuate with changes in the market value of the fund's holdings. The fund's shares can be bought and sold in the secondary market at market prices. Disruptions to purchases and sales, the existence of extreme market volatility, and/or a lack of an active trading market for the fund's shares may result in the fund's shares trading significantly above (at a premium) or below (at a discount) to NAV and bid/ask spreads may widen. Shares of the fund may trade at a larger premium or discount to the NAV than shares of other ETFs that focus on other market segments or types of securities. In addition, in stressed market conditions or periods of market disruption or volatility, the market for shares of the fund may become less liquid in response to deteriorating liquidity in the markets for the fund's underlying portfolio holdings. If you buy fund shares when their market price is at a premium or sell fund shares when their market prices is at a discount, you may pay more than, or receive less than, NAV, respectively.

**Authorized Participant Risks:** Only financial institutions authorized to transact daily with the fund (Authorized Participants) may engage in creation or redemption transactions directly with the fund, and Authorized Participants are not obligated to do so. To the extent an Authorized Participant cannot or is otherwise unwilling to engage in creation and redemption transactions, and no other Authorized Participant engages in such transactions, shares of the fund may trade at a significant discount or premium to NAV, experience wider intraday bid/ask spreads, and may face trading halts and/or delisting from the exchange.

**Trading Issues Risk:** There can be no assurance that an active trading market for the fund's shares will develop or be maintained. In addition, trading of the fund's shares may be halted or become less liquid. Shares of the fund, similar to shares of other issuers listed on a stock exchange, may be sold short and are therefore subject to the risk of increased volatility and price decreases associated with being sold short.

Most fund investors will buy and sell fund shares on the listing exchange or on another secondary market. When buying or selling shares of the fund, investors typically will pay brokerage commissions or other charges imposed by financial intermediaries as determined by that financial intermediary.

**Cash Transactions Risk:** Unlike certain ETFs that distribute portfolio securities entirely in-kind, the fund may effect some or all creations and redemptions using cash, rather than in-kind securities. As a result, an investment in the fund may be less tax-efficient than an investment in an ETF that distributes portfolio securities entirely in-kind.

#### Performance Information
The bar chart and performance table are not included because the fund has not had a full calendar year of operations. Once the fund has commenced operations, updated performance information will be available online at **mfs.com**. Past performance (before and after taxes) does not necessarily indicate how the fund will perform in the future.

#### Investment Adviser
MFS serves as the investment adviser for the fund.

#### Portfolio Manager(s)

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| | | |
|:---|:---|:---|
| &nbsp;&nbsp;**Portfolio Manager** | &nbsp;&nbsp;**Since** | &nbsp;&nbsp;&nbsp;**Title** |
| &nbsp;&nbsp;Steven Gorham | &nbsp;&nbsp;Inception | &nbsp;&nbsp;&nbsp;Investment Officer of MFS |
| &nbsp;&nbsp;David Shindler | &nbsp;&nbsp;Inception | &nbsp;&nbsp;&nbsp;Investment Officer of MFS |
| &nbsp;&nbsp;Jed Stocks | &nbsp;&nbsp;Inception | &nbsp;&nbsp;&nbsp;Investment Officer of MFS |

---

#### Purchase and Sale of Fund Shares
The fund issues and redeems shares at NAV only with Authorized Participants and only in large blocks of shares (each, a Creation Unit). Individual fund shares may not be purchased or redeemed directly with the fund. An Authorized Participant may purchase or redeem a Creation Unit of the fund each business day that the fund is open in exchange for the delivery of a designated portfolio of in-kind securities and/or cash.

Shares are listed for trading on the NYSE Arca, Inc. (the "Exchange"), and individual fund shares may only be purchased and sold in the secondary market through a financial intermediary at market price. Because the fund's shares will trade at market prices rather than NAV, shares may trade at prices greater than NAV (at a premium), at NAV, or less than NAV (at a discount).

An investor may incur costs attributable to the difference between the highest price a buyer is willing to pay to purchase shares (bid) and the lowest price a seller is willing to accept for shares (ask) when buying or selling fund shares in the secondary market (the bid/ask spread). Recent information, including information regarding the fund's NAV, market price, premiums and discounts, and bid/ask spread, is available at **www.mfs.com**.

#### Taxes
If your shares are held in a taxable account, the fund's distributions will be taxed to you as ordinary income and/or capital gains. However, if your shares are held in a tax-advantaged account, you will generally be taxed only upon withdrawals from the account unless such an account allows for tax-free withdrawals.

#### Payments to Broker/Dealers and Other Financial Intermediaries
The fund, MFS, and/or MFS' affiliates may pay financial intermediaries, which include banks, broker/dealers, or financial professionals, for the sale of shares of a fund and/or the servicing of

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MFS Active International Value ETF

shareholder accounts. These payments may create a conflict of interest by influencing your broker/dealer or other financial intermediary and your salesperson to recommend the fund over another investment. Ask your financial intermediary or visit your financial intermediary's website for more information.

#### Investment Objective, Strategies, and Risks

#### Investment Objective
The fund's investment objective is to seek capital appreciation. The fund's objective may be changed without shareholder approval.

#### Principal Investment Strategies
MFS normally invests at least 80% of the fund's net assets in value companies. Value companies are companies that MFS believes are undervalued compared to their perceived worth in the marketplace. MFS considers a number of factors when determining whether a company is undervalued, including whether (i) the issuer is included in an index which is representative of value companies; (ii) the issuer is classified as a value company by an independent third party financial data provider and/or (iii) the issuer exhibits the characteristics of a value company, considering metrics such as historical and/or projected price-to-book, price-to-earnings, and price-to-cash flow ratios, enterprise value (the total value of the issuer's outstanding equity and debt) relative to earnings, and free cash flow yield compared to the applicable equity market and/or to issuers in the same sector or industry. In assessing the relative value of an issuer, MFS may also consider measures of financial quality, such as indicators of profitability (i.e., return on equity and return on invested capital), balance sheet strength (including leverage and interest coverage ratios), and capital allocation discipline. Value companies tend to have stock prices that are low relative to their earnings, dividends, assets, or other financial measures.

MFS normally invests the fund's assets primarily in foreign equity securities, including emerging market equity securities. Emerging market countries are countries with financial and capital markets in the development phase. Emerging market countries include countries located in Latin America, Asia, Africa, the Middle East, and developing countries of Europe, primarily Eastern Europe.

MFS normally invests the fund's assets primarily in common stocks and depositary receipts.

MFS may invest the fund's assets in securities of companies of any size.

MFS normally invests the fund's assets across different industries, sectors, countries, and regions, but MFS may invest a significant percentage of the fund's assets in issuers in a single industry, sector, country, or region.

MFS uses an active bottom-up investment approach to buying and selling investments for the fund. Investments are selected primarily based on fundamental analysis of individual issuers and their potential in light of their financial condition, and market, economic, political, and regulatory conditions. Factors considered may include analysis of an issuer's earnings, cash flows, competitive position, and management ability. MFS may also consider environmental, social, and governance (ESG) factors in its fundamental investment analysis where MFS believes such factors could materially impact the economic value of an issuer. ESG factors considered may include, but are not limited to, climate change, resource depletion, an issuer's governance structure and practices, data protection and privacy issues, and diversity and labor practices. In managing the fund, MFS also utilizes quantitative models that evaluate factors such as issuer, industry and sector weightings, geographic weightings, market capitalization, volatility, tracking error, and other factors to assist the portfolio management team in the portfolio construction and security selection process.

For purposes of the fund's 80% policy, net assets include the amount of any borrowings for investment purposes.

#### Principal Investment Type
The principal investment type in which the fund may invest is:

**Equity Securities:** Equity securities represent an ownership interest, or the right to acquire an ownership interest, in a company or other issuer. Different types of equity securities provide different voting and dividend rights and priorities in the event of bankruptcy of the issuer. Equity securities include common stocks, preferred stocks, securities convertible into stocks, equity interests in real estate investment trusts, and depositary receipts for such securities.

#### Principal Risks
The share price of the fund will change daily based on changes in market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions. As with any exchange-traded fund, the fund may not achieve its objective and/or you could lose money on your investment in the fund. An investment in the fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. The significance of any specific risk to an investment in the fund will vary over time depending on the composition of the fund's portfolio, market conditions, and other factors. You should read all of the risk information below carefully, because any one or more of these risks may result in losses to the fund.

The principal risks of investing in the fund are:

**Investment Selection Risk:** MFS' investment analysis, its development and use of quantitative models, and its selection of investments may not produce the intended results and/or can lead to an investment focus that results in the fund underperforming other funds with similar investment strategies and/or underperforming the markets in which the fund invests. The quantitative models used by MFS (both proprietary and third-party) may not produce the intended results for a variety of reasons, including the factors used in the models, the weight placed on each factor in the models, changes from the market factors' historical trends, changing sources of market return or market risk, and technical issues or errors in the design, development, implementation, application, and maintenance of the models (e.g., incomplete, stale, or inaccurate data, human error, programming or other software issues, coding errors, and technology failures). In addition, MFS or the fund's other service providers may experience disruptions or operating errors that could negatively impact the fund.

**Equity Market Risk:** Equity markets are volatile and can decline significantly in response to changes in, or investor perceptions of, issuer, market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions. These conditions can affect a single issuer or type of security, issuers within a broad market sector, industry or geographic region, or the equity markets in general. Different parts of the market and different types of securities can react differently to these conditions. For example, the stocks of growth companies can react differently from the stocks of value companies, and the stocks of large cap companies can react differently from the stocks of small cap companies. Certain changes or events, such as political, social, or economic developments, including political elections, increasing or negative interest rates or the U.S. government's inability at times to agree on a long-term budget and deficit reduction plan (which has in the past resulted and may in the future result in a government shutdown); market closures and/or trading halts; government or

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MFS Active International Value ETF

regulatory actions, including sanctions, the imposition of tariffs or other protectionist actions and changes in fiscal, monetary, or tax policies; rapid technological developments or widespread adoption of emerging technologies (such as artificial intelligence); natural disasters; outbreaks of pandemic and epidemic diseases; terrorist attacks; war; and other geopolitical changes or events, can have a dramatic adverse effect on equity markets and may lead to periods of high volatility in an equity market or a segment of an equity market.

**Company Risk:** Changes in the financial condition of a company or other issuer, changes in specific market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions that affect a particular type of investment or issuer, and changes in general market, economic, political, regulatory, geopolitical, environmental, public health, and other conditions can adversely affect the prices of investments. The value of an investment held by the fund may decline due to factors directly related to the issuer, such as competitive pressures, rapid technological developments or widespread adoption of emerging technologies (such as artificial intelligence) impacting the issuer's competitive position and making products and/or services obsolete, cybersecurity incidents, financial leverage, historical and/or prospective earnings, management performance, labor and supply shortages, investor perceptions, and other factors. The prices of securities of smaller, less well-known issuers can be more volatile than the prices of securities of larger issuers or the market in general.

**Value Company Risk:** The stocks of value companies can continue to be undervalued for long periods of time and not realize their expected value and can be more volatile than the market in general.

**Foreign Risk:** Investments in securities of foreign issuers, securities of companies with significant foreign exposure, and foreign currencies can involve additional risks relating to market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions. Political, social, diplomatic, and economic developments, U.S. and foreign government action, or the threat thereof, such as the imposition of currency or capital blockages, controls, or tariffs, economic and trade sanctions or embargoes, security trading suspensions, entering or exiting trade or other intergovernmental agreements, or the expropriation or nationalization of assets in a particular country, can cause dramatic declines in certain or all securities with exposure to that country and other countries. Sanctions, or the threat of sanctions, may cause volatility in regional and global markets and may negatively impact the performance of various sectors and industries, as well as companies in other countries, which could have a negative effect on the performance of the fund. In the event of nationalization, expropriation, confiscation or other government action, intervention, or restriction, the fund could lose its entire investment in a particular foreign issuer or country. Civil unrest, geopolitical tensions, armed conflicts, wars, and acts of terrorism are other potential risks that could adversely affect an investment in a foreign security or in foreign markets or issuers generally. Economies and financial markets are interconnected, which increases the likelihood that conditions in one country or region can adversely impact issuers in different countries and regions. Less stringent regulatory, accounting, auditing, and disclosure requirements for issuers and markets are more common in certain foreign countries. Enforcing legal rights can be difficult, costly, and slow in certain foreign countries and with respect to certain types of investments, and can be particularly difficult against foreign governments. Changes in currency exchange rates can significantly impact the financial condition of a company or other issuer with exposure to multiple countries as well as affect the U.S. dollar value of foreign currency investments and investments denominated in foreign currencies. Additional risks of foreign investments include trading, settlement, custodial, and other operational risks, and withholding and other taxes. These factors can make foreign investments, especially those tied economically to emerging markets, more volatile and less liquid than U.S. investments. In addition, foreign markets can react differently to market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions than the U.S. market. Investments in foreign issuers through depositary receipts generally involve risks applicable to other types of foreign investments. Investments in depositary receipts may be less liquid and more volatile than the underlying securities in their primary trading market.

**Emerging Markets Risk:** Investments tied economically to emerging markets, especially frontier markets (emerging markets that are early in their development), can involve additional and greater risks than the risks associated with investments in developed markets. Emerging markets typically have less developed economies and markets, greater custody and operational risk, less developed legal, regulatory, and accounting systems, less trading volume, less stringent investor protection and disclosure standards, less reliable settlement practices, greater government involvement in the economy, and greater risk of new or inconsistent government treatment of or restrictions on issuers and instruments than developed countries. Financial and other disclosures by emerging market issuers may be considerably less reliable than disclosures made by issuers in developed markets. In addition, the Public Company Accounting Oversight Board, which regulates auditors of U.S. public companies, may not be able to inspect audit work papers in certain emerging market countries. Emerging markets can also be subject to greater political, social, geopolitical, and economic instability and more susceptible to environmental problems. In addition, many emerging market countries with less established health care systems have experienced outbreaks of pandemics or contagious diseases from time to time. These factors can make emerging market investments more volatile and less liquid than investments in developed markets.

**Currency Risk:** Changes in currency exchange rates can significantly impact the financial condition of a company or other issuer with exposure to multiple countries. In addition, a decline in the value of a foreign currency relative to the U.S. dollar reduces the value of the foreign currency and investments denominated in that currency. In addition, the use of foreign exchange contracts to reduce foreign currency exposure can eliminate some or all of the benefit of an increase in the value of a foreign currency versus the U.S. dollar. The value of foreign currencies relative to the U.S. dollar fluctuates in response to, among other factors, interest rate changes, intervention (or failure to intervene) by the U.S. or foreign governments, central banks, or supranational entities such as the International Monetary Fund, the imposition of currency controls, and other political or regulatory conditions in the United States or abroad. Foreign currency values can decrease significantly both in the short term and over the long term in response to these and other conditions.

**Focus Risk:** Issuers in a single industry, sector, country, or region can react similarly to market, currency, political, economic, regulatory, geopolitical, environmental, public health, and other conditions. These conditions include business environment changes; economic factors such as fiscal, monetary, and tax policies; inflation and unemployment rates; and government and regulatory changes. The fund's performance will be affected by the conditions in the industries, sectors, countries, and regions to which the fund is exposed. Furthermore, investments in particular

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MFS Active International Value ETF

industries, sectors, countries, or regions may be more volatile than the broader market as a whole.

**Liquidity Risk:** Certain investments and types of investments are subject to restrictions on resale, may trade in the over-the-counter market, or may not have an active trading market due to adverse market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions, including trading halts, sanctions, or wars. Investors trying to sell large quantities of a particular investment or type of investment, or lack of market makers or other buyers for a particular investment or type of investment may also adversely affect liquidity. At times, all or a significant portion of a market may not have an active trading market. Without an active trading market, it may be difficult to value, and it may not be possible to sell, these investments and the fund could miss other investment opportunities and hold investments it would prefer to sell, resulting in losses for the fund. In addition, the fund may have to sell certain of these investments at prices or times that are not advantageous in order to meet redemptions or other cash needs, which could result in dilution of remaining investors' interests in the fund. The prices of illiquid securities may be more volatile than more liquid investments.

**Fluctuation of Net Asset Value and Share Price Risk:** The NAV of the fund's shares will generally fluctuate with changes in the market value of the fund's holdings. The fund's shares are listed on an exchange and can be bought and sold in the secondary market at market prices. The market prices of the fund's shares will fluctuate in accordance with changes in NAV and supply and demand of fund shares on the listing exchange. It is possible that the market price of fund shares and the fund's NAV will vary significantly. As a result, you may sustain losses if you pay more than the shares' NAV when you purchase shares, or receive less than the shares' NAV when you sell shares, in the secondary market. During the existence of extreme market volatility and/or a lack of an active trading market for the fund's shares, the market price of fund shares is more likely to diverge significantly from the fund's NAV. During such periods, you may be unable to sell your shares of the fund or may incur significant losses if you sell your shares. Disruptions at market makers, Authorized Participants or other market participants may also result in significant differences between the market price of the fund's shares and the fund's NAV.

The market price of shares during the trading day, like the price of any exchange-traded security, includes a bid/ask spread charged by the exchange specialist, market makers, or other participants that trade the particular security. In times of severe market disruption or volatility, the bid/ask spread can increase significantly. At those times, shares of the fund are most likely to be traded at a discount to NAV, and the discount is likely to be greatest when the price of fund shares is falling fastest. Securities held by the fund may be traded in markets that close at a different time than the listing exchange. During the time when the listing exchange is open but after the applicable market closing, fixing or settlement times, bid/ask spreads and the resulting premium or discount to the fund's NAV may widen.

**Authorized Participant Risk:** Only financial institutions authorized to transact daily with the fund (Authorized Participants) may engage in creation or redemption transactions directly with the fund, and Authorized Participants are not obligated to do so. The fund has a limited number of intermediaries that act as Authorized Participants. There are no obligations of market makers to make a market in the fund's shares or of Authorized Participants to submit creation or redemption orders for Creation Units. Decisions by market makers and/or Authorized Participants to reduce their role with respect to market making or creation and redemption activities during times of market stress, or a decline in the number of Authorized Participants due to decisions to exit the business, bankruptcy, or other factors, could inhibit the effectiveness of the arbitrage process in maintaining the relationship between the underlying value of the fund's portfolio securities and the market price of fund shares. To the extent an Authorized Participant cannot or is otherwise unwilling to engage in creation and redemption transactions, and no other Authorized Participant creates or redeems shares in such transactions, shares of the fund may trade at a significant discount or premium to NAV and may face trading halts and/or delisting from the exchange.

**Trading Issues Risk:** Although shares are listed on an exchange, there can be no assurance that an active secondary trading market will develop or continue. In addition, trading of shares in the secondary market may become less liquid or may be halted, for example, due to activation of market-wide "circuit breakers." If trading halts or an unanticipated early closing of the listing exchange occurs, a shareholder may be unable to purchase or sell shares of the fund. MFD, the distributor of the fund's shares, does not maintain a secondary market in the shares. There can be no assurance that requirements for the fund to remain listed on the exchange will be met or maintained. If the fund's shares are delisted from the listing exchange, MFS may seek to list the fund's shares on another exchange, merge the fund with another exchange-traded fund or mutual fund, or redeem the fund's shares at NAV. Shares of the fund, similar to shares of other issuers listed on a stock exchange, may be sold short and are therefore subject to the risk of increased volatility and price decreases associated with being sold short. Most fund investors will buy and sell fund shares on the listing exchange or on another secondary market. When buying or selling shares of the fund, investors typically will pay brokerage commissions or other charges imposed by financial intermediaries as determined by that financial intermediary.

**Cash Transactions Risk:** Unlike certain ETFs, the fund may effect some or all creations and redemptions using cash, rather than in-kind securities. Therefore, the fund may be required to sell portfolio securities and recognize gains on such sales that the fund might not have recognized if it were to distribute portfolio securities in-kind. As a result, an investment in the fund may be less tax-efficient than an investment in an ETF that distributes portfolio securities entirely in-kind. The use of cash creations and redemptions may also cause the fund's shares to trade in the market at greater bid/ask spreads or greater premiums or discounts to the fund's NAV. Furthermore, cash creation and redemption transactions may result in certain brokerage, tax, foreign exchange, execution, price movement and other costs, and expenses related to the execution of trades resulting from such transactions. To the extent that the maximum additional charge for creation or redemption transactions is insufficient to cover these costs and expenses, the fund's performance could be negatively impacted.

#### Other Investment Strategies and Risks
**Active and Frequent Trading:** MFS may engage in active and frequent trading in pursuing the fund's principal investment strategies. Frequent trading may increase transaction costs, which can reduce the fund's return. Frequent trading can also increase the possibility of capital gain and ordinary distributions. Frequent trading can also result in the realization of a higher percentage of short-term capital gains and a lower percentage of long-term capital gains as compared to a fund that trades less frequently. Because short-term capital gains are distributed as ordinary income, this would generally increase your tax liability unless you hold your shares through a tax-advantaged or tax-exempt vehicle.

**Operational and Cybersecurity Risk:** The fund and its service providers, and your ability to transact in fund shares, may be

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MFS Active International Value ETF

negatively impacted due to operational matters arising from, among other issues, human errors, systems and technology disruptions or failures, fraudulent activities, or cybersecurity incidents. Operational issues and cybersecurity incidents may cause the fund or its service providers, as well as securities trading venues and other market participants, to suffer data corruption and/or lose operational functionality, and could, among other things, impair the ability to calculate the fund's net asset value per share, impede trading of portfolio securities, and result in the theft, misuse, and/or improper release of confidential information relating to the fund or its shareholders. Such operational issues and cybersecurity incidents may result in losses to the fund and its shareholders. Because technology is frequently changing, new ways to carry out cyberattacks continue to develop. In addition, the rapid development and increasingly widespread use of new technologies, including machine learning technology and generative models could exacerbate these risks. Therefore, there is a chance that certain risks have not been identified or prepared for, or that an attack may not be detected, which puts limitations on the ability of the fund and its service providers to plan for or respond to a cyberattack. Information relating to the fund's investments is delivered electronically, which can give rise to a number of risks, including, but not limited to, the risks that such communications may not be secure and may contain computer viruses or other defects, may not be accurately replicated on other systems, or may be intercepted, deleted or interfered with, without the knowledge of the sender or the intended recipient. Furthermore, geopolitical tensions could increase the scale and sophistication of deliberate cybersecurity attacks, particularly those from nation-states or from entities with nation-state backing.

**Temporary Defensive Strategy:** In response to adverse market, economic, industry, political, or other conditions, MFS may depart from the fund's principal investment strategies by temporarily investing for defensive purposes. When MFS invests defensively, different factors could affect the fund's performance and the fund may not achieve its investment objective. In addition, the defensive strategy may not work as intended.

**Further Information on Investment Strategies, Types, and Risks:** Information about investment strategies and investment types not described in the prospectus and the risks associated with those investment strategies and investment types are described in the fund's Statement of Additional Information (SAI).

#### Management of the Fund

#### Investment Adviser
MFS, located at 111 Huntington Avenue, Boston, Massachusetts 02199, serves as the investment adviser for the fund. Subject to the supervision of the fund's Board of Trustees, MFS is responsible for managing the fund's investments, executing transactions, and providing related administrative services (including certain financial, legal, and other administrative services) and facilities under an Investment Management Agreement between the fund and MFS.

The management fee set forth in the Investment Management Agreement is 0.57% of the fund's average daily net assets annually.

The management fee includes investment management services and ordinary, recurring operating expenses, except for certain expenses. The following expenses are excluded from the all-inclusive management fee: (i) interest expense or other costs of the fund's borrowing(s) or financing activities; (ii) taxes (including, but not limited to, income, excise, transfer and withholding taxes, including any accrued deferred tax liability) and governmental fees levied against the fund; (iii) costs of any litigation such as any indemnification obligation, attorneys' fees, expenses, costs, judgments, amounts paid in settlement, fines, penalties, fees of expert witnesses, document production fees, and all other liabilities incurred or paid by the fund or a person indemnified by a fund; (iv) costs associated with any tax reclaims or similar actions, including any fees paid on a contingent basis; (v) brokerage fees and commissions and other investment-related transaction costs incurred by or for the fund; (vi) expenses of a fund's securities lending, if any, including any securities lending agent fees, as governed by a separate securities lending agreement; (vii) expenses incident to meetings of fund shareholders and the associated preparation, filing, printing and mailing of related notices and proxy statements; (viii) expenses incurred in connection with the provision of distribution services under a plan adopted pursuant to Rule 12b-1 under the 1940 Act (if any); (ix) investment-related expenses (such as interest and borrowing expenses incurred in connection with the fund's investment activity, and fees and expenses associated with investments in investment companies and other similar investment vehicles); (x) expenses of a fund which are capitalized in accordance with generally accepted accounting principles; (xi) the fee paid to MFS pursuant to this Agreement; (xii) other nonrecurring or extraordinary expenses (as determined by a majority of the Trustees of the trust who are not "interested persons" of the trust); and (xiii) such other expenses as approved by a majority of the trust's Board of Trustees.

A discussion regarding the basis for the Board of Trustees' approval of the Investment Management Agreement will be available in the fund's Form N-CSR filing with the SEC for the period that ends August 31, 2026, and in the related financial statements posted online at etfs.mfs.com.

MFS is America's oldest mutual fund organization. MFS and its predecessor organizations have a history of money management dating from 1924 and the founding of the first mutual fund, Massachusetts Investors Trust. Net assets under the management of the MFS organization were approximately $621 billion as of March 31, 2026.

**Disclosure of Portfolio Holdings**. The fund has established a policy with respect to the disclosure of fund portfolio holdings. A description of this policy is provided in the SAI.

On each business day, before commencement of trading on the Exchange, the fund will disclose on www.mfs.com the identities and quantities of the fund's portfolio holdings that will form the basis for the fund's calculation of NAV at the end of the business day. Other information concerning the fund's portfolio holdings may also be published on the fund's website from time to time.

#### Portfolio Manager(s)
Information regarding the portfolio manager(s) of the fund is set forth below. Further information regarding the portfolio manager(s), including other accounts managed, compensation, ownership of fund shares, and possible conflicts of interest, is available in the fund's SAI.

---

| | | |
|:---|:---|:---|
| **&nbsp;&nbsp;&nbsp;&nbsp;Portfolio Manager** | **Primary Role** | **&nbsp;&nbsp;&nbsp;&nbsp;Five Year History** |
| &nbsp;&nbsp;Steven Gorham | &nbsp;&nbsp;Portfolio Manager | &nbsp;&nbsp;Employed in the investment area of MFS since 1992 |
| &nbsp;&nbsp;David Shindler | &nbsp;&nbsp;Portfolio Manager | &nbsp;&nbsp;Employed in the investment area of MFS since 2006 |
| &nbsp;&nbsp;Jed Stocks | &nbsp;&nbsp;Quantitative Portfolio Manager | &nbsp;&nbsp;Employed in the investment area of MFS since 2001 |

---

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MFS Active International Value ETF

#### Administrator
MFS provides the fund with certain financial, legal, and other administrative services pursuant to an Investment Management Agreement. MFS bears the costs of the administrative services provided under the Investment Management Agreement.

#### Transfer Agent
State Street Bank and Trust Company (State Street) serves as the fund's transfer agent and dividend disbursing agent. MFS bears the costs of the services provided under the transfer agency agreement.

#### Distributor
MFS Fund Distributors, Inc. (MFD), a wholly-owned subsidiary of MFS, is the distributor of shares of the fund.

#### Distribution and Service Fees
The fund has adopted a plan in accordance with Rule 12b-1 under the Investment Company Act of 1940, as amended (the Distribution Plan). Under the Distribution Plan, the fund is authorized to pay distribution and/or service fees to MFD of up to 0.25% of the fund's average daily net assets to support the sale and distribution of the fund's shares, and/or shareholder servicing and account maintenance activities.

These fees are paid out of fund assets. Because these fees are an ongoing expense of the fund, they increase the cost of your investment over time and may cost you more than other types of sales charges.

The fund's Board of Trustees has determined not to implement payments of Rule 12b-1 fees under the Distribution Plan at this time. The 12b-1 fee may only be imposed when the Board of Trustees determines that it is in the best interests of shareholders to do so.

#### Financial Intermediary Compensation
The term "financial intermediary" refers to any broker, dealer, bank (including bank trust departments), registered investment adviser, financial planner, retirement plan administrator, third-party administrator, insurance company, and any other institution having a selling, administration, or any other similar or related agreement with MFD, MFS, or any of their affiliates. Financial intermediaries receive various forms of compensation in connection with the sale of shares of a fund and/or the servicing of shareholder accounts. Financial intermediaries may receive such compensation in the form of payments paid by MFD and/or one or more of its affiliates (for purposes of this section only, collectively, "MFD") from MFD's own additional resources, which may be made to the financial intermediary or its affiliate.

Certain financial intermediaries receive payments from MFD from MFD's own additional resources as incentives to market the MFS funds, to participate in MFD's promotional efforts and/or in recognition of their marketing support, administrative services, and/or transaction processing support, which may be made to the financial intermediary or its affiliate. This compensation from MFD is not reflected in the "Fees and Expenses" table in the fund's prospectus. MFD compensates financial intermediaries based on criteria established by MFD from time to time, including the distribution potential of the financial intermediary, the types of products and programs offered by the financial intermediary, eligibility for placement on the financial intermediary's preferred or recommended list, the financial and contractual terms with the financial intermediary, the level and/or type of marketing and administrative support provided by the financial intermediary, and the quality of the overall relationship with the financial intermediary. In particular, MFD normally considers the level of assets attributable to the financial intermediary, the level of redemptions by the financial intermediary, the level of access to the financial intermediary's representatives and management, the ability to educate the representatives of the financial intermediary about the MFS funds, and the number of representatives of the financial intermediary potentially utilizing the MFS funds with their clients.

MFD makes these additional payments to financial intermediaries for marketing support and administrative services with respect to fund shares sold or held through the financial intermediary's distribution network and/or through programs such as retirement programs, qualified tuition programs, fund supermarkets, fee-based advisory or wrap fee programs, bank trust programs, and insurance (e.g., individual or group annuity) programs. MFD also makes payments to certain financial intermediaries to help offset the costs associated with client account maintenance support, statement preparation, and transaction processing. To the extent permitted by SEC and Financial Industry Regulatory Authority (FINRA) rules and other applicable laws and regulations, MFD makes other payments or allows other promotional incentives or payments to financial intermediaries.

The types of payments described above are not exclusive and such payments can be significant to the financial intermediary. In addition, the compensation that financial intermediaries receive may vary by fund and/or class of shares sold and among financial intermediaries. Depending upon the arrangements in place at any particular time, financial intermediaries may have a financial incentive to recommend a particular fund or share class when a less expensive option with the same or similar characteristics is available or to recommend MFS funds instead of other funds that generate less or no compensation for the financial intermediary. Likewise, such compensation could create incentives for the financial intermediary to hold an investment longer than might be appropriate, or conversely, to make more frequent exchanges or other transactions than might be necessary.

You can find further details in the SAI about the payments made by MFD and its affiliates and the services provided by financial intermediaries. Financial intermediaries may charge you additional fees and/or commissions other than those disclosed in this prospectus. You should ask your financial intermediary for information about any payments it receives from MFD and its affiliates and any services it provides, as well as about fees and/or commissions it charges you. Financial intermediaries that sell or transact in fund shares may also act as a broker/dealer in connection with an MFS fund's purchase or sale of portfolio securities. However, the fund and MFS do not consider financial intermediaries' sales of shares of an MFS fund as a factor when choosing broker/dealers to effect portfolio transactions for the MFS funds.

#### Additional Information About the Purchase and Sale of Fund Shares
Shares of the fund may be created or redeemed directly from the fund only in Creation Units or multiples thereof.

**Directly with the Fund.** Fund shares are issued or redeemed only in large blocks of fund shares (previously defined as "Creation Units"), and the fund only transacts with financial institutions known as Authorized Participants, in accordance with procedures described in the SAI. Creation Unit transactions are conducted in exchange for the deposit or delivery of a designated basket of in-kind securities and/or cash at NAV next determined after receipt of an order in proper form. Creation Unit transactions may be made on any day that the Exchange is open for business. The fund reserves

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MFS Active International Value ETF

the right, but does not have the obligation, to reject any creation or redemption transaction at any time.

When creating or redeeming Creation Units, Authorized Participants are required to pay a fixed purchase or redemption transaction fee as well as any applicable additional variable charge, as described in the SAI.

An Authorized Participant may create or redeem a Creation Unit of the fund on any business day in exchange for the delivery of a designated basket of in-kind securities and/or cash. The fund may, in certain circumstances, offer creation units partially or solely for cash. Creation and redemption baskets may differ, and the fund may accept "custom baskets." More information regarding custom baskets is contained in the SAI. The prices at which creations and redemptions occur are based on the next calculation of NAV after a creation or redemption order is received in proper form under the applicable Authorized Participant Agreement. Authorized Participants may create or redeem Creation Units for their own accounts or for their customers, including, without limitation, affiliates of the fund.

The fund anticipates regularly meeting redemption requests primarily through in-kind redemptions. However, the fund reserves the right to pay redemption proceeds to an Authorized Participant entirely or partly in cash. Under normal circumstances, the fund will pay out redemption proceeds to a redeeming Authorized Participant within two business days after the Authorized Participant's redemption request is received, in accordance with the process set forth in the fund's SAI and in the agreement between the Authorized Participant and MFD. However, the fund may delay processing an Authorized Participant's redemption request for up to seven days. Under unusual circumstances, such as when the Exchange is closed, trading on the Exchange is restricted, or as permitted by the SEC, the fund may suspend redemptions or postpone payment for more than seven days. With respect to redemptions that include foreign common stock, the fund may pay out redemption proceeds or deliver the securities up to 15 days after the receipt of a redemption request.

Information about the procedures regarding creation and redemption of Creation Units (including the cut-off times for receipt of creation and redemption orders) and the applicable transaction fees and/or any variable fees is included in the fund's SAI.

**In the Secondary Market.** Individual shares of the fund may be purchased and sold only on a national securities exchange through brokers. Fund shares are listed for trading on the Exchange and may be sold at a premium or discount to NAV. As a result, you may pay more than NAV when you purchase shares, and receive less than NAV when you sell shares, in the secondary market. If you buy or sell shares in the secondary market, you will generally incur customary brokerage commissions and charges and you may also incur the cost of the spread between the price at which a dealer will buy fund shares and the somewhat higher price at which a dealer will sell shares. Due to such commissions and charges and spread costs, frequent trading of the fund's shares may detract significantly from investment returns. There are various methods by which investors can purchase and sell shares and various orders that may be placed. You should consult your financial intermediary before purchasing or selling shares of the fund. The trading prices of the fund's shares in the secondary market generally differ from the fund's daily NAV per share and are affected by market forces such as supply and demand, economic conditions, and other factors. Information regarding the intraday indicative value (IIV) of the fund may be disseminated every 15 seconds throughout the trading day by the national securities exchange on which the fund's shares are primarily listed or by market data vendors or other information providers. The IIV is based on the current market value of the securities and/or cash included in the fund's IIV basket. The IIV does not necessarily reflect the precise composition of the current portfolio of securities and instruments held by the fund at a particular point in time or the best possible valuation of the current portfolio. Unlike the fund's NAV, the IIV may not reflect estimated accrued interest, dividends and other income, or fund expenses. Therefore, the IIV should not be viewed as a "real-time" update of the NAV, which is computed only once a day. The IIV is generally determined by using both current market quotations and/or price quotations obtained from broker-dealers that may trade in the portfolio securities and instruments included in the fund's IIV basket. The fund is not involved in, or responsible for, the calculation or dissemination of the IIV and makes no representation or warranty as to its accuracy. An inaccuracy in the IIV could result from various factors, including the difficulty of pricing portfolio instruments on an intraday basis.

**Premium and Discount Information.** Information showing the number of days the market price of the fund's shares was greater than the fund's NAV (premium) and the number of days it was less than the fund's NAV (discount) for various time periods is available at www.mfs.com. NAV is the price at which the fund issues and redeems its shares, and it is calculated in accordance with the fund's valuation policy and procedures. On the other hand, the market price is generally the official closing price of the fund's shares on an exchange. The fund's market price may be at, above (at a premium) or below (at a discount) to its NAV on days the Exchange is open for trading. The NAV of the fund will fluctuate with changes in the value of its portfolio holdings. The market price of the fund will fluctuate based on changes in the fund's NAV, as well as market supply and demand. Shareholders may pay more than NAV when they buy fund shares and less than NAV when they sell fund shares because such shares are bought and sold at current market prices. The market price is also used to calculate the market returns of the fund.

**Frequent Trading.** The fund's Board of Trustees has not adopted policies and procedures designed to prevent or monitor for frequent purchases and redemptions of the fund's shares because the fund sells and redeems shares at NAV only in Creation Units, pursuant to the terms of the agreement between an Authorized Participant and MFD**,** and such direct trading between the fund and Authorized Participants is critical to seeking to ensure that the fund's shares trade at or close to NAV. Further, the vast majority of trading in fund shares occurs on the secondary market, which does not involve the fund directly and, therefore, does not cause the fund to experience many of the harmful effects of market timing, such as dilution and disruption of portfolio management. In addition, the fund may impose a transaction fee on Creation Unit transactions, which is designed to offset transfer and other transaction costs incurred by the fund in connection with the issuance and redemption of Creation Units and may employ fair valuation pricing to minimize potential dilution from market timing. The fund reserves the right to reject any purchase order at any time and reserves the right to impose restrictions on disruptive, excessive, or short-term trading.

#### Other Information

#### Valuation

#### Determination of Fund Net Asset Value
The price of the fund's shares is based on its net asset value. The net asset value of the fund's shares is determined each day the New York Stock Exchange LLC ("the NYSE") is open for trading as of the close of regular trading on the NYSE (generally 4:00 p.m. Eastern time). However, net asset value may be calculated earlier in

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MFS Active International Value ETF

emergency situations or as otherwise permitted by the SEC. Net asset value per share is computed by dividing the net assets allocated to the fund by the number of shares outstanding for that fund. On days when the NYSE is closed (such as weekends and holidays), net asset value is not calculated, and the fund does not transact creation and redemption orders. To the extent the fund's assets are traded in other markets on days when the fund does not price its shares, the value of the fund's assets will likely change when shareholders will not be able to purchase or redeem shares of the fund.

To determine net asset value, the fund's investments for which reliable market quotations are readily available are valued at market value, and funds in which the fund invests are generally valued at their net asset value per share. Certain short term debt instruments may be valued at amortized cost.

The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund's investments to MFS pursuant to the fund's valuation policy and procedures approved by the Board of Trustees. The Board of Trustees has designated MFS as the "valuation designee" of the fund. As valuation designee, MFS will determine the fair value, in good faith, of securities and other instruments held by the fund for which market quotations are not readily available and, among other things, will assess and manage material risks associated with fair value determinations, select, apply, and test fair value methodologies, and oversee and evaluate pricing services used in valuing the fund's investments. If MFS determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by MFS in accordance with the fair valuation policy and procedures adopted by MFS.

In addition, investments may be valued at fair value if MFS determines that an investment's value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as a foreign exchange or market) and prior to the determination of the fund's net asset value, or after the halting of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur on a frequent basis after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund's net asset value may be deemed to have a material effect on the value of securities traded in foreign markets. Accordingly, foreign equity securities may be valued at fair value. MFS generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost, and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment.

The value of an investment for purposes of calculating the fund's net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund's net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.

#### Market Share Prices
Shares of the fund may be purchased and sold by investors in the secondary market through a financial intermediary at market price, which may vary throughout the trading day and may differ from NAV.

#### Distributions
The fund intends to declare and pay any dividends to shareholders at least annually.

Any capital gains are distributed at least annually.

#### Distribution Options
No dividend reinvestment options are offered by the fund. Dividend distributions may be reinvested automatically in additional shares only if the financial intermediary through which an investor purchased fund shares makes such option available.

Beneficial owners of fund shares should contact their financial intermediary to determine the availability and costs of a dividend reinvestment program.

#### Book Entry
Shares of the fund are held in book-entry form, which means that no stock certificates are issued. The Depository Trust Company (DTC), or its nominee, is the registered owner of, and holds legal title to, all outstanding shares of the fund. Your beneficial ownership of shares will be shown on the records of DTC and the DTC participant financial intermediary through which you hold the shares. As beneficial owner of shares, you are not entitled to receive physical delivery of share certificates or have shares registered in your name, and you are not considered a registered owner of fund shares. Therefore, to exercise any rights as an owner of fund shares, you must rely on the procedures of DTC and its participants.

Your financial intermediary will provide you with account statements, confirmations of your purchases and sales, and tax information. Your financial intermediary will also be responsible for distributing income and capital gain distributions and for sending you shareholder reports and other information as may be required.

#### Note to Authorized Participants Regarding Continuous Offering
Certain legal risks may exist that are unique to Authorized Participants purchasing Creation Units directly from the fund. Because new Creation Units may be issued on an ongoing basis, at any point a "distribution," as such term is used in the Securities Act of 1933, as amended (Securities Act), could be occurring. As a broker-dealer, certain activities that Authorized Participants perform may, depending on the circumstances, result in the Authorized Participant being deemed a participant in a distribution, in a manner which could render the Authorized Participant a statutory underwriter and subject the Authorized Participant to the prospectus delivery and liability provisions of the Securities Act.

For example, an Authorized Participant may be deemed a statutory underwriter if the Authorized Participant purchases Creation Units from the fund, breaks them down into individual fund shares, and sells such shares directly to customers, or if the Authorized Participant chooses to couple the creation of a supply of new fund shares with an active selling effort involving solicitation of secondary market demand for fund shares. A determination of whether a person is an underwriter for purposes of the Securities Act depends upon all of the facts and circumstances pertaining to that person's activities, and the examples mentioned here should not be considered a complete description of all the activities that could lead to a categorization as an underwriter.

Dealers who are not "underwriters" but are participating in a distribution (as opposed to engaging in ordinary secondary market transactions), and thus dealing with shares as part of an "unsold allotment" within the meaning of Section 4(a)(3)(C) of the Securities Act, will be unable to take advantage of the prospectus

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MFS Active International Value ETF

delivery exemption provided by Section 4(a)(3) of the Securities Act. This is because the prospectus delivery exemption in Section 4(a) (3) of the Securities Act is not available in respect of such transactions as a result of Section 24(d) of the Investment Company Act of 1940, as amended. As a result, financial intermediaries should note that dealers who are not underwriters but are participating in a distribution (as opposed to engaging in ordinary secondary market transactions) and thus dealing with the shares that are part of an overallotment within the meaning of Section 4(a)(3)(A) of the Securities Act would be unable to take advantage of the prospectus delivery exemption provided by Section 4(a)(3) of the Securities Act. Firms that incur a prospectus delivery obligation with respect to shares of the fund are reminded that, under Rule 153 under the Securities Act, a prospectus delivery obligation under Section 5(b) (2) of the Securities Act owed to an exchange member in connection with a sale on an exchange is satisfied by the fact that the prospectus is available at the exchange upon request. The prospectus delivery mechanism provided in Rule 153 is only available with respect to transactions on an exchange. Certain affiliates of the fund may purchase and resell fund shares pursuant to this prospectus.

#### Tax Considerations
The following discussion is very general. You are urged to consult your tax adviser regarding the effect that an investment in the fund will have on your particular tax situation, including possible U.S. federal, state, and local and non-U.S. taxes. This discussion does not apply to shares of the fund held through tax-advantaged accounts such as retirement plans or by shareholders that are not "United States persons" under the Internal Revenue Code of 1986, as amended (Internal Revenue Code).

The fund expects to distribute substantially all of its income and gains annually. Distributions from the fund are generally taxable to shareholders. If you buy shares when the fund has realized but not yet distributed ordinary income or capital gains, you will pay full price for the shares and then receive a portion back as a taxable distribution if you continue to hold the shares through that distribution's record date.

Any gain resulting from the redemption, sale, or exchange of your shares will generally also be subject to tax.

For U.S. federal income tax purposes, distributions of investment income are generally taxable as ordinary income. Taxes on distributions of capital gains are determined by how long the fund owned or is deemed to have owned the investments that generated them, rather than how long you have owned your shares of the fund. Distributions of gains from the sale of investments that the fund owned for more than one year and that are properly reported by the fund as capital gain dividends will be treated as long-term capital gains includible in net capital gain and taxed to individuals at reduced rates. Distributions of gains from the sale of investments that the fund owned for one year or less will be taxable as ordinary income. If some or all of the fund's income derives from "qualified dividend income" and if you are an individual who meets holding period and other requirements with respect to the fund's shares, those distributions that are properly reported by the fund as derived from qualified dividend income are taxed to you at the reduced rates applicable to net capital gains.

A 3.8% Medicare contribution tax is generally imposed on distributions paid by the fund (other than exempt-interest dividends, if any) to, and net gains recognized on the sale, redemption, exchange, or other taxable disposition of shares of the fund by certain individuals, estates, and trusts to the extent their income exceeds certain threshold amounts.

The fund's investments in foreign securities may be subject to foreign withholding or other taxes, which will decrease the fund's return on those securities. The fund generally will be eligible to elect to "pass through" to you foreign income taxes that it pays. If the fund so elects, you must include your share of those taxes in gross income as a distribution from the fund and you will be allowed to claim a credit (or a deduction) for such amounts on your U.S. federal income tax return, subject to certain limitations. In addition, the fund's investments in certain foreign securities (including fixed income securities and derivatives) denominated in foreign currencies may increase or accelerate the fund's recognition of ordinary income and may affect the timing, amount, or character of the fund's distributions.

The IRS Form 1099 that is provided to you early each year details your distributions from the fund and how they are treated for U.S. federal tax purposes, and cost basis information for shares purchased on or after January 1, 2012, that you redeemed, sold, or exchanged. Our default method for calculating cost basis is average cost basis. More information about other cost basis methods and a cost basis selection/change form is available on **mfs.com**. If your account is held by your financial intermediary, you must contact your financial intermediary to obtain information about available cost basis methods and cost basis elections for your account.

**Authorized Participants.** An Authorized Participant that exchanges securities for Creation Units may realize a gain or loss equal to the difference between the fair market value of the Creation Units at the time of purchase and the sum of the Authorized Participant's cost basis in the securities transferred plus any cash paid.

An Authorized Participant that exchanges Creation Units for securities may realize a gain or loss equal to the difference between the Authorized Participant's cost basis in the Creation Units and the sum of the fair market value of the securities plus any cash received. The Internal Revenue Service (IRS), however, may assert that a loss realized upon an exchange of primarily securities for Creation Units cannot be deducted currently under the rules governing "wash sales," or on the basis that there has been no significant change in economic position.

Authorized Participants who are dealers in securities are subject to different tax treatment on the exchange for or redemption of Creation Units. Authorized Participants exchanging securities for Creation Units or redeeming Creation Units should consult with their own tax advisor.

#### Information about the Summary Prospectus, Prospectus, and SAI
The summary prospectus, prospectus, and SAI for a fund provide information concerning the fund. The summary prospectus, prospectus, and SAI are updated at least annually and any information provided in a summary prospectus, prospectus, or SAI can be changed without a shareholder vote unless specifically stated otherwise. The summary prospectus, prospectus, and SAI are not contracts between the fund and its shareholders and do not give rise to any contractual rights or obligations or any shareholder rights other than any rights conferred by federal or state securities laws that may not be waived.

#### Derivative Actions and Forum Selection
The trust's Declaration of Trust provides that shareholders may not bring suit on behalf of the fund without first requesting that the Board of Trustees bring such suit unless there would be irreparable injury to the fund or if a majority of the Board of Trustees (or a majority of the Board of Trustees on any committee established to consider the merits of such action) have a personal financial interest

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MFS Active International Value ETF

in the action. This provision of the Declaration of Trust does not apply to claims arising under federal securities laws. Trustees of the trust are not considered to have a personal financial interest by virtue of being compensated for their services as Trustees of the trust or as trustees of MFS funds with the same or an affiliated investment adviser or distributor.

Under the trust's By-Laws and Declaration of Trust, any claims asserted against or on behalf of the fund, including claims against Trustees and Officers of the trust, must be brought in state and federal courts located within the Commonwealth of Massachusetts. The designation of exclusive forum may make it more expensive for a shareholder to bring a suit and may limit a shareholder's ability to litigate a claim in a jurisdiction or forum that may be more convenient or favorable to the shareholder.

#### Provision of Shareholder Reports and Summary Prospectuses
The fund produces shareholder reports every six months and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one paper copy of the fund's annual and semiannual shareholder report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund (please see back cover for telephone number) to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

#### Additional Information on Fees and Expenses
<u>Fees and Expenses</u>

The annual fund operating expenses shown in "Fees and Expenses" are based on estimated "Other Expenses" for the current fiscal year expressed as a percentage of a fund's estimated average net assets during the period.

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MFS Active International Value ETF

#### Financial Highlights
The fund had not commenced operations as of the date of this prospectus; therefore, no Financial Highlights are included.

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MFS Active International Value ETF

#### MFS Active International Value ETF
**Shareholder Communications with the Board of Trustees.** Shareholders may mail written communications to the Board of Trustees to the attention of the Board of Trustees, [fund name], Massachusetts Financial Services Company, 111 Huntington Avenue, Boston, MA 02199, Attention: Fund Secretary. Shareholder communications must (i) be in writing and be signed by the shareholder, (ii) identify the MFS fund to which they relate, and (iii) identify the number of shares held by the shareholder.

#### If you want more information about MFS Active International Value ETF, the following documents are available free upon request:
**Annual/Semiannual Reports and Form N-CSR Filings.** The fund's annual and semiannual shareholder reports and Form N-CSR contain information about the fund's actual investments. Annual shareholder reports discuss the effect of recent market conditions and investment strategies on the fund's performance during its last fiscal year. Form N-CSR includes the fund's annual and semiannual financial statements.

**Statement of Additional Information (SAI).** The SAI, dated May 19, 2026, as may be amended or supplemented from time to time, provides more detailed information about the fund and is incorporated into this prospectus by reference.

You can get free copies of the SAI, annual/semiannual shareholder reports, fund financial statements, and other information about the fund, including current net asset values per share, and make inquiries about the fund, by contacting:

Internet: **mfs.com**

Telephone: 1-800-637-5637

Reports and other information about the fund are available on the EDGAR Database on the Commission's Internet website at **http://www.sec.gov**, and copies of this information may be obtained, upon payment of a duplicating fee, by electronic request at the following e-mail address: **publicinfo@sec.gov**.

The fund's Investment Company Act file number is 811-23953.

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![](img_1b458c79babd4f2.jpg)

May 19, 2026

PROSPECTUS

## MFS <sup>®</sup> Blended Research <sup>®</sup> Small-Mid Cap ETF
The investment objective of the fund is to seek capital appreciation.

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| |
|:---|
| &nbsp;&nbsp;**TICKER SYMBOL** |
| &nbsp;&nbsp;BRSM |

---

#### Table of contents

---

| | |
|:---|:---|
| [SUMMARY OF KEY INFORMATION](#x1x3) | [2](#x1x3) |
| [INVESTMENT OBJECTIVE, STRATEGIES, AND RISKS](#x2x3) | [5](#x2x3) |
| [MANAGEMENT OF THE FUND](#x3x3) | [9](#x3x3) |
| [ADDITIONAL INFORMATION ABOUT THE PURCHASE AND SALE OF FUND SHARES](#x4x3) | [10](#x4x3) |
| [OTHER INFORMATION](#x5x3) | [11](#x5x3) |
| [FINANCIAL HIGHLIGHTS](#x6x3) | [14](#x6x3) |

---

Principal U.S. Listing Exchange: The NYSE Arca, Inc. Exchange-traded fund (ETF) shares are not individually redeemable.

**The U.S. Securities and Exchange Commission (the SEC) has not approved or disapproved the fund's shares or determined whether this prospectus is accurate or complete. Anyone who tells you otherwise is committing a crime.**

ESM-PRO-051926

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## MFS Blended Research Small-Mid Cap ETF

#### Summary of Key Information

#### Investment Objective
The fund's investment objective is to seek capital appreciation.

#### Fees and Expenses
This table describes the fees and expenses that you may pay when you buy, hold, and sell shares of the fund. **Investors may also pay commissions or other fees to their financial intermediaries when they buy, hold, and sell shares of the fund, which are not reflected below.**

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| | | |
|:---|:---|:---|
| **Shareholder Fees (fees paid directly from your investment):** | **Shareholder Fees (fees paid directly from your investment):** | **Shareholder Fees (fees paid directly from your investment):** |
|  | **Maximum Sales Charge (Load) <br>Imposed on Purchases (as a percentage of offering price)** | None |
|  | **Maximum Deferred Sales Charge (Load) <br>(as a percentage of original purchase price or redemption proceeds, whichever is less)** | None |

---

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| | |
|:---|:---|
| **Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):** | **Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):** |
| Management Fee | 0.38% |
| Other Expenses<sup>1</sup> | <u>0.00%</u> |
| Total Annual Fund Operating Expenses | 0.38% |

---

1 The annual fund operating expenses are based on estimated "Other Expenses" for the current fiscal year expressed as a percentage of the fund's estimated average net assets during the period.

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MFS Blended Research Small-Mid Cap ETF

#### Example
This example is intended to help you compare the cost of investing in the fund with the cost of investing in other funds. The example does not take into account brokerage commissions or other fees that you may pay to your financial intermediary when purchasing or selling shares of the fund.

The example assumes that: you invest $10,000 in the fund for the time periods indicated and you redeem your shares at the end of the time periods; your investment has a 5% return each year; and the fund's operating expenses remain the same.

Although your actual costs will likely be higher or lower, under these assumptions your costs would be:

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| | | |
|:---|:---|:---|
|  | **1 YEAR** | **3 YEARS** |
| **Fund Shares** | $39  | $122  |

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#### Portfolio Turnover
The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when shares are held in a taxable account. These transaction costs, which are not reflected in "Annual Fund Operating Expenses" or in the "Example," affect the fund's performance. The portfolio turnover rate for the fund is not available because the fund had not commenced operations as of the date of this prospectus.

#### Principal Investment Strategies
MFS (Massachusetts Financial Services Company, the fund's investment adviser) seeks to achieve the fund's objective by actively identifying potential investments based on fundamental and quantitative analysis and then constructing a portfolio from these potential investments while managing various risk factors (e.g., issuer, industry, and sector weightings, market capitalization, and volatility) compared to the Russell 2500 Index.

MFS normally invests at least 80% of the fund's net assets in issuers with small and/or medium market capitalizations. MFS defines small and medium market capitalization companies as issuers that (i) have market capitalizations within the capitalization range of the Russell 2500 Index over the past 12 months based on the current composition of the index and/or are (ii) classified as a small or medium capitalization company by an independent third party financial data provider. The market capitalization range of companies considered to have small and medium capitalizations based on the above criteria will change over time depending on market conditions. For illustrative purposes, as of April 30, 2026, the range of the market capitalizations of the issuers in the Russell 2500 Index was between approximately $27.7 million and $161.9 billion.

MFS normally invests the fund's assets primarily in common stocks and equity interests in real estate investment trusts (REITs). Common stocks and equity interests in REITs are equity securities that represent an ownership interest (or right to acquire an ownership interest) in a company or other issuer.

In selecting investments for the fund, MFS is not constrained by any particular investment style. MFS may invest the fund's assets in the stocks of companies it believes to have above average earnings growth potential compared to other companies (growth companies), in the stocks of companies it believes are undervalued compared to their perceived worth (value companies), or in a combination of growth and value companies.

MFS may invest the fund's assets in foreign securities.

MFS normally invests the fund's assets across different industries and sectors, but MFS may invest a significant percentage of the fund's assets in issuers in a single industry or sector.

MFS uses an active bottom-up approach to buying and selling investments for the fund. Investments are selected primarily based on blending fundamental and quantitative research. MFS uses fundamental analysis of individual issuers, which takes into account factors such as an issuer's financial condition and market, economic, political, and regulatory conditions, to determine a fundamental rating for an issuer. MFS uses quantitative analysis to systematically evaluate an issuer's valuation, price and earnings momentum, earnings quality, and other factors, in determining a quantitative rating for an issuer. MFS combines the fundamental rating with the quantitative rating to create a blended rating for an issuer. When the fundamental rating is not available, MFS treats the issuer as having a neutral fundamental rating.

**MFS constructs the portfolio using a portfolio optimization process that considers the blended rating, as well as issuer, industry, and sector weightings, market capitalization, volatility, and other factors. The portfolio managers have the discretion to adjust the inputs and parameters used in the optimization process and the fund's portfolio holdings based on factors such as the desired portfolio characteristics and the portfolio managers' qualitative assessment of the optimization results. MFS' goal is to construct an actively managed portfolio with a target predicted tracking error of approximately 2% compared to the Russell 2500 Index. Tracking error generally measures how the differences between the fund's returns and the Russell 2500 Index's returns have varied over a period of time.** 

For purposes of the fund's 80% policy, net assets include the amount of any borrowings for investment purposes.

#### Principal Risks
As with any exchange-traded fund, the fund may not achieve its objective and/or you could lose money on your investment in the fund. An investment in the fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency.

The principal risks of investing in the fund are:

**Investment Selection Risk:** MFS' investment analysis, its development and use of quantitative models, and its selection of investments may not produce the intended results and/or can lead to an investment focus that results in the fund underperforming other funds with similar investment strategies and/or underperforming the markets in which the fund invests. The quantitative models used by MFS (both proprietary and third-party) may not produce the intended results for a variety of reasons, including the factors used in the models, the weight placed on each factor in the models, changes from the market factors' historical trends, changing sources of market return or market risk, and technical issues in the design, development, implementation, application, and maintenance of the models (e.g., incomplete, stale, or inaccurate data, human error, programming or other software issues, coding errors, and technology failures).

**Equity Market Risk/Company Risk:** Equity markets are volatile and can decline significantly in response to changes in, or investor perceptions of, issuer, market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions. These conditions can affect a single issuer or type of security, issuers within a broad market sector, industry or geographic region, or the equity markets in general. Certain events can have a dramatic adverse effect on equity markets and may lead

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MFS Blended Research Small-Mid Cap ETF

to periods of high volatility in an equity market or a segment of an equity market. The value of an investment held by the fund may decline due to factors directly related to the issuer.

**Growth Company Risk:** The stocks of growth companies can be more sensitive to the company's earnings and more volatile than the market in general.

**Value Company Risk:** The stocks of value companies can continue to be undervalued for long periods of time and not realize their expected value and can be more volatile than the market in general.

**Small to Medium Cap Risk:** The stocks of small to medium cap companies can be more volatile and their shares can be less liquid than those of larger companies.

**Investment Strategy Risk:** There is no assurance that the fund's predicted tracking error will equal its target predicted tracking error at any point in time or consistently for any period of time, or that the fund's predicted tracking error and actual tracking error will be similar. The fund's strategy to target a predicted tracking error of approximately 2% compared to the Russell 2500 Index and to blend fundamental and quantitative research may not produce the intended results. In addition, MFS' fundamental research is not available for all issuers.

**Foreign Risk: Exposure to foreign markets through issuers or currencies can involve additional risks relating to market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions. These factors can make foreign investments, especially those tied economically to countries with developing economies or countries subject to sanctions or the threat of new or modified sanctions, more volatile and less liquid than U.S. investments. In addition, foreign markets can react differently to these conditions than the U.S. market.**

**REITs Risk:** The risks of investing in REITs include certain risks associated with the direct ownership of real estate and the real estate industry in general. These include risks related to general, regional and local economic conditions; difficulties in valuing and disposing of real estate; fluctuations in interest rates and property tax rates; shifts in zoning laws, environmental regulations and other governmental action; cash flow dependency; increased operating expenses; lack of availability of mortgage funds; losses due to natural disasters; overbuilding; losses due to casualty or condemnation; changes in property values and rental rates; the management skill and creditworthiness of the REIT manager; and other factors. The securities of smaller real estate-related issuers can be more volatile and less liquid than securities of larger issuers and their issuers can have more limited financial resources.

**Focus Risk:** Issuers in a single industry, sector, country, or region can react similarly to market, currency, political, economic, regulatory, geopolitical, environmental, public health, and other conditions, and the fund's performance will be affected by the conditions in the industries, sectors, countries, and regions to which the fund is exposed. Furthermore, investments in particular industries, sectors, countries, or regions may be more volatile than the broader market as a whole.

**Liquidity Risk:** It may be difficult to value, and it may not be possible to sell, certain investments, types of investments, and/or investments in certain segments of the market, and the fund may have to sell certain of these investments at prices or times that are not advantageous in order to meet redemptions or other cash needs.

**Capacity Risk:** The markets and securities in which the fund primarily invests may, at times, have limited capacity, and as an ETF, the fund cannot be closed to new investors as a means of managing capacity. During periods of capacity constraints, the implementation and execution of the fund's strategy, including the portfolio securities purchased, held, and sold by the fund, may change, and capacity limitations may negatively impact the performance of the fund.

**Fluctuation of Net Asset Value and Share Price Risk:** The net asset value (NAV) per share of the fund will generally fluctuate with changes in the market value of the fund's holdings. The fund's shares can be bought and sold in the secondary market at market prices. Disruptions to purchases and sales, the existence of extreme market volatility, and/or a lack of an active trading market for the fund's shares may result in the fund's shares trading significantly above (at a premium) or below (at a discount) to NAV and bid/ask spreads may widen. Shares of the fund may trade at a larger premium or discount to the NAV than shares of other ETFs that focus on other market segments or types of securities. In addition, in stressed market conditions or periods of market disruption or volatility, the market for shares of the fund may become less liquid in response to deteriorating liquidity in the markets for the fund's underlying portfolio holdings. If you buy fund shares when their market price is at a premium or sell fund shares when their market prices is at a discount, you may pay more than, or receive less than, NAV, respectively.

**Authorized Participant Risks:** Only financial institutions authorized to transact daily with the fund (Authorized Participants) may engage in creation or redemption transactions directly with the fund, and Authorized Participants are not obligated to do so. To the extent an Authorized Participant cannot or is otherwise unwilling to engage in creation and redemption transactions, and no other Authorized Participant engages in such transactions, shares of the fund may trade at a significant discount or premium to NAV, experience wider intraday bid/ask spreads, and may face trading halts and/or delisting from the exchange.

**Trading Issues Risk:** There can be no assurance that an active trading market for the fund's shares will develop or be maintained. In addition, trading of the fund's shares may be halted or become less liquid. Shares of the fund, similar to shares of other issuers listed on a stock exchange, may be sold short and are therefore subject to the risk of increased volatility and price decreases associated with being sold short.

Most fund investors will buy and sell fund shares on the listing exchange or on another secondary market. When buying or selling shares of the fund, investors typically will pay brokerage commissions or other charges imposed by financial intermediaries as determined by that financial intermediary.

**Cash Transactions Risk:** Unlike certain ETFs that distribute portfolio securities entirely in-kind, the fund may effect some or all creations and redemptions using cash, rather than in-kind securities. As a result, an investment in the fund may be less tax-efficient than an investment in an ETF that distributes portfolio securities entirely in-kind.

#### Performance Information
The bar chart and performance table are not included because the fund has not had a full calendar year of operations. Once the fund has commenced operations, updated performance information will be available online at **mfs.com**. Past performance (before and after taxes) does not necessarily indicate how the fund will perform in the future.

#### Investment Adviser
MFS serves as the investment adviser for the fund.

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MFS Blended Research Small-Mid Cap ETF

#### Portfolio Manager(s)

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| | | |
|:---|:---|:---|
| &nbsp;&nbsp;**Portfolio Manager** | &nbsp;&nbsp;**Since** | &nbsp;&nbsp;&nbsp;**Title** |
| &nbsp;&nbsp;Jonathan Sage | &nbsp;&nbsp;Inception | &nbsp;&nbsp;&nbsp;Investment Officer of MFS |
| &nbsp;&nbsp;Jenney Zhang | &nbsp;&nbsp;Inception | &nbsp;&nbsp;&nbsp;Investment Officer of MFS |
| &nbsp;&nbsp;Nathan Bryant | &nbsp;&nbsp;Inception | &nbsp;&nbsp;&nbsp;Investment Officer of MFS |
| &nbsp;&nbsp;Jed Stocks | &nbsp;&nbsp;Inception | &nbsp;&nbsp;&nbsp;Investment Officer of MFS |

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#### Purchase and Sale of Fund Shares
The fund issues and redeems shares at NAV only with Authorized Participants and only in large blocks of shares (each, a Creation Unit). Individual fund shares may not be purchased or redeemed directly with the fund. An Authorized Participant may purchase or redeem a Creation Unit of the fund each business day that the fund is open in exchange for the delivery of a designated portfolio of in-kind securities and/or cash.

Shares are listed for trading on the NYSE Arca, Inc. (the "Exchange"), and individual fund shares may only be purchased and sold in the secondary market through a financial intermediary at market price. Because the fund's shares will trade at market prices rather than NAV, shares may trade at prices greater than NAV (at a premium), at NAV, or less than NAV (at a discount).

An investor may incur costs attributable to the difference between the highest price a buyer is willing to pay to purchase shares (bid) and the lowest price a seller is willing to accept for shares (ask) when buying or selling fund shares in the secondary market (the bid/ask spread). Recent information, including information regarding the fund's NAV, market price, premiums and discounts, and bid/ask spread, is available at **www.mfs.com**.

#### Taxes
If your shares are held in a taxable account, the fund's distributions will be taxed to you as ordinary income and/or capital gains. However, if your shares are held in a tax-advantaged account, you will generally be taxed only upon withdrawals from the account unless such an account allows for tax-free withdrawals.

#### Payments to Broker/Dealers and Other Financial Intermediaries
The fund, MFS, and/or MFS' affiliates may pay financial intermediaries, which include banks, broker/dealers, or financial professionals, for the sale of shares of a fund and/or the servicing of shareholder accounts. These payments may create a conflict of interest by influencing your broker/dealer or other financial intermediary and your salesperson to recommend the fund over another investment. Ask your financial intermediary or visit your financial intermediary's website for more information.

#### Investment Objective, Strategies, and Risks

#### Investment Objective
The fund's investment objective is to seek capital appreciation. The fund's objective may be changed without shareholder approval.

#### Principal Investment Strategies
MFS seeks to achieve the fund's objective by actively identifying potential investments based on fundamental and quantitative analysis and then constructing a portfolio from these potential investments while managing various risk factors (e.g., issuer, industry, and sector weightings, market capitalization, and volatility) compared to the Russell 2500 Index.

MFS normally invests at least 80% of the fund's net assets in issuers with small and/or medium market capitalizations. MFS defines small and medium market capitalization companies as issuers that (i) have market capitalizations within the capitalization range of the Russell 2500 Index over the past 12 months based on the current composition of the index and/or are (ii) classified as a small or medium capitalization company by an independent third party financial data provider. The market capitalization range of companies considered to have small and medium capitalizations based on the above criteria will change over time depending on market conditions. For illustrative purposes, as of April 30, 2026, the range of the market capitalizations of the issuers in the Russell 2500 Index was between approximately $27.7 million and $161.9 billion.

MFS normally invests the fund's assets primarily in common stocks and equity interests in real estate investment trusts (REITs).

In selecting investments for the fund, MFS is not constrained by any particular investment style. MFS may invest the fund's assets in the stocks of companies it believes to have above average earnings growth potential compared to other companies (growth companies), in the stocks of companies it believes are undervalued compared to their perceived worth (value companies), or in a combination of growth and value companies.

MFS may invest the fund's assets in foreign securities.

MFS normally invests the fund's assets across different industries and sectors, but MFS may invest a significant percentage of the fund's assets in issuers in a single industry or sector.

MFS uses an active bottom-up approach to buying and selling investments for the fund. Investments are selected primarily based on blending fundamental and quantitative research. MFS uses fundamental analysis of individual issuers and their potential in light of their financial condition and market, economic, political, and regulatory conditions to determine a fundamental rating for an issuer. Factors considered may include analysis of an issuer's earnings, cash flows, competitive position, and management ability. MFS may also consider environmental, social, and governance (ESG) factors in its fundamental investment analysis where MFS believes such factors could materially impact the economic value of an issuer. ESG factors considered may include, but are not limited to, climate change, resource depletion, an issuer's governance structure and practices, data protection and privacy issues, and diversity and labor practices. MFS uses quantitative analysis, including quantitative models that systematically evaluate an issuer's valuation, price and earnings momentum, earnings quality, and other factors, to determine a quantitative rating for an issuer. MFS combines the fundamental rating with the quantitative rating to create a blended rating for an issuer. (When the fundamental rating is not available, MFS treats the issuer as having a neutral fundamental rating. MFS' quantitative research generates ratings on a greater number of issuers than MFS' fundamental research.)

MFS constructs the portfolio using a portfolio optimization process that considers the blended rating, as well as issuer, industry, and sector weightings, market capitalization, volatility, and other factors. The portfolio managers have the discretion to adjust the inputs and parameters used in the optimization process and the fund's portfolio holdings based on factors such as the desired portfolio characteristics and the portfolio managers' qualitative assessment of the optimization results. MFS' goal is to construct an actively managed portfolio with a target predicted tracking error of approximately 2% compared to the Russell 2500 Index. Tracking error generally measures how the differences between the fund's returns and the Russell 2500 Index's returns have varied over a period of time. A lower tracking error means that there is generally less variation between the fund's returns compared to the applicable

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MFS Blended Research Small-Mid Cap ETF

index. Third-party quantitative risk models are used in the portfolio construction process and to measure the predicted tracking error of the fund's portfolio.

For purposes of the fund's 80% policy, net assets include the amount of any borrowings for investment purposes.

#### Principal Investment Types
The principal investment types in which the fund may invest are:

**Equity Securities:** Equity securities represent an ownership interest, or the right to acquire an ownership interest, in a company or other issuer. Different types of equity securities provide different voting and dividend rights and priorities in the event of bankruptcy of the issuer. Equity securities include common stocks, preferred stocks, securities convertible into stocks, equity interests in REITs, and depositary receipts for such securities.

**REITs:** REITs are pooled investment vehicles that invest primarily in income-producing real estate and/or real estate-related loans or interests. REITs include real estate investment trusts formed under U.S. law as well as similar entities formed under the laws of non-U.S. countries.

#### Principal Risks
The share price of the fund will change daily based on changes in market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions. As with any exchange-traded fund, the fund may not achieve its objective and/or you could lose money on your investment in the fund. An investment in the fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. The significance of any specific risk to an investment in the fund will vary over time depending on the composition of the fund's portfolio, market conditions, and other factors. You should read all of the risk information below carefully, because any one or more of these risks may result in losses to the fund.

The principal risks of investing in the fund are:

**Investment Selection Risk:** MFS' investment analysis, its development and use of quantitative models, and its selection of investments may not produce the intended results and/or can lead to an investment focus that results in the fund underperforming other funds with similar investment strategies and/or underperforming the markets in which the fund invests. The quantitative models used by MFS (both proprietary and third-party) may not produce the intended results for a variety of reasons, including the factors used in the models, the weight placed on each factor in the models, changes from the market factors' historical trends, changing sources of market return or market risk, and technical issues or errors in the design, development, implementation, application, and maintenance of the models (e.g., incomplete, stale, or inaccurate data, human error, programming or other software issues, coding errors, and technology failures). In addition, MFS or the fund's other service providers may experience disruptions or operating errors that could negatively impact the fund.

**Equity Market Risk:** Equity markets are volatile and can decline significantly in response to changes in, or investor perceptions of, issuer, market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions. These conditions can affect a single issuer or type of security, issuers within a broad market sector, industry or geographic region, or the equity markets in general. Different parts of the market and different types of securities can react differently to these conditions. For example, the stocks of growth companies can react differently from the stocks of value companies, and the stocks of large cap companies can react differently from the stocks of small cap companies. Certain changes or events, such as political, social, or economic developments, including political elections, increasing or negative interest rates or the U.S. government's inability at times to agree on a long-term budget and deficit reduction plan (which has in the past resulted and may in the future result in a government shutdown); market closures and/or trading halts; government or regulatory actions, including sanctions, the imposition of tariffs or other protectionist actions and changes in fiscal, monetary, or tax policies; rapid technological developments or widespread adoption of emerging technologies (such as artificial intelligence); natural disasters; outbreaks of pandemic and epidemic diseases; terrorist attacks; war; and other geopolitical changes or events, can have a dramatic adverse effect on equity markets and may lead to periods of high volatility in an equity market or a segment of an equity market.

**Company Risk:** Changes in the financial condition of a company or other issuer, changes in specific market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions that affect a particular type of investment or issuer, and changes in general market, economic, political, regulatory, geopolitical, environmental, public health, and other conditions can adversely affect the prices of investments. The value of an investment held by the fund may decline due to factors directly related to the issuer, such as competitive pressures, rapid technological developments or widespread adoption of emerging technologies (such as artificial intelligence) impacting the issuer's competitive position and making products and/or services obsolete, cybersecurity incidents, financial leverage, historical and/or prospective earnings, management performance, labor and supply shortages, investor perceptions, and other factors. The prices of securities of smaller, less well-known issuers can be more volatile than the prices of securities of larger issuers or the market in general.

**Growth Company Risk:** The stocks of growth companies can be more sensitive to the company's earnings and more volatile than the market in general.

**Value Company Risk:** The stocks of value companies can continue to be undervalued for long periods of time and not realize their expected value and can be more volatile than the market in general.

**Small to Medium Cap Risk:** The stocks of small to medium cap companies can be more volatile than the stocks of larger companies due to limited product lines, financial and management resources, and market and distribution channels. Small to medium cap companies often have shorter operating histories than larger, well-established companies. Their shares can be less liquid than those of larger companies, especially during market declines.

**Investment Strategy Risk:** There is no assurance that the fund's predicted tracking error will equal its target predicted tracking error at any point in time or consistently for any period of time, or that the fund's predicted tracking error and actual tracking error will be similar. The fund's strategy to target a predicted tracking error of approximately 2% compared to the Russell 2500 Index and to blend fundamental and quantitative research may not produce the intended results. In addition, MFS' fundamental research is not available for all issuers.

**Foreign Risk:** Investments in securities of foreign issuers, securities of companies with significant foreign exposure, and foreign currencies can involve additional risks relating to market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions. Political, social, diplomatic, and economic developments, U.S. and foreign government action, or the threat thereof, such as the imposition of currency or capital blockages, controls, or tariffs, economic and

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trade sanctions or embargoes, security trading suspensions, entering or exiting trade or other intergovernmental agreements, or the expropriation or nationalization of assets in a particular country, can cause dramatic declines in certain or all securities with exposure to that country and other countries. Sanctions, or the threat of sanctions, may cause volatility in regional and global markets and may negatively impact the performance of various sectors and industries, as well as companies in other countries, which could have a negative effect on the performance of the fund. In the event of nationalization, expropriation, confiscation or other government action, intervention, or restriction, the fund could lose its entire investment in a particular foreign issuer or country. Civil unrest, geopolitical tensions, armed conflicts, wars, and acts of terrorism are other potential risks that could adversely affect an investment in a foreign security or in foreign markets or issuers generally. Economies and financial markets are interconnected, which increases the likelihood that conditions in one country or region can adversely impact issuers in different countries and regions. Less stringent regulatory, accounting, auditing, and disclosure requirements for issuers and markets are more common in certain foreign countries. Enforcing legal rights can be difficult, costly, and slow in certain foreign countries and with respect to certain types of investments, and can be particularly difficult against foreign governments. Changes in currency exchange rates can significantly impact the financial condition of a company or other issuer with exposure to multiple countries as well as affect the U.S. dollar value of foreign currency investments and investments denominated in foreign currencies. Additional risks of foreign investments include trading, settlement, custodial, and other operational risks, and withholding and other taxes. These factors can make foreign investments, especially those tied economically to countries with developing economies, more volatile and less liquid than U.S. investments. In addition, foreign markets can react differently to market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions than the U.S. market. Investments in foreign issuers through depositary receipts generally involve risks applicable to other types of foreign investments. Investments in depositary receipts may be less liquid and more volatile than the underlying securities in their primary trading market.

**REITs Risk:** The risks of investing in REITs include certain risks associated with the direct ownership of real estate and the real estate industry in general. REITs are affected by general, regional, and local economic conditions; difficulties in valuing and disposing of real estate; fluctuations in interest rates and property tax rates; shifts in zoning laws, environmental regulations, and other governmental action; cash flow dependency; increased operating expenses; lack of availability of mortgage funds; losses due to natural disasters; overbuilding; losses due to casualty or condemnation; changes in property values and rental rates; the management skill and creditworthiness of the REIT manager; and other factors. The real estate sector is particularly sensitive to economic downturns. During such periods, demand for property may decrease and prices may decline, which could impact the value of real estate-related investments. Many real estate-related issuers, including REITs, utilize leverage (and some may be highly leveraged), which increases investment risk and could adversely affect the issuer's operations and market value in periods of rising interest rates. The securities of smaller real estate-related issuers can be more volatile and less liquid than securities of larger issuers and their issuers can have more limited financial resources. In addition, REITs may have limited diversification because they invest in a limited number of properties, a narrow geographic area, or a single type of property.

REITs could be adversely affected by failure to qualify for the favorable tax treatment available to REITs under the Internal Revenue Code of 1986, as amended, or to maintain their exemption from registration under the Investment Company Act of 1940, as amended, and similar risks may also apply to securities of entities similar to REITs formed under the laws of non-U.S. countries.

**Focus Risk:** Issuers in a single industry, sector, country, or region can react similarly to market, currency, political, economic, regulatory, geopolitical, environmental, public health, and other conditions. These conditions include business environment changes; economic factors such as fiscal, monetary, and tax policies; inflation and unemployment rates; and government and regulatory changes. The fund's performance will be affected by the conditions in the industries, sectors, countries, and regions to which the fund is exposed. Furthermore, investments in particular industries, sectors, countries, or regions may be more volatile than the broader market as a whole.

**Liquidity Risk:** Certain investments and types of investments are subject to restrictions on resale, may trade in the over-the-counter market, or may not have an active trading market due to adverse market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions, including trading halts, sanctions, or wars. Investors trying to sell large quantities of a particular investment or type of investment, or lack of market makers or other buyers for a particular investment or type of investment may also adversely affect liquidity. At times, all or a significant portion of a market may not have an active trading market. Without an active trading market, it may be difficult to value, and it may not be possible to sell, these investments and the fund could miss other investment opportunities and hold investments it would prefer to sell, resulting in losses for the fund. In addition, the fund may have to sell certain of these investments at prices or times that are not advantageous in order to meet redemptions or other cash needs, which could result in dilution of remaining investors' interests in the fund. The prices of illiquid securities may be more volatile than more liquid investments.

**Capacity Risk:** The markets and securities in which the fund primarily invests may, at times, have limited capacity, and as an ETF, the fund cannot be closed to new investors as a means of managing capacity. During periods of capacity constraints, the implementation and execution of the fund's strategy, including the portfolio securities purchased, held, and sold by the fund, may change, and capacity limitations may negatively impact the performance of the fund.

**Fluctuation of Net Asset Value and Share Price Risk:** The NAV of the fund's shares will generally fluctuate with changes in the market value of the fund's holdings. The fund's shares are listed on an exchange and can be bought and sold in the secondary market at market prices. The market prices of the fund's shares will fluctuate in accordance with changes in NAV and supply and demand of fund shares on the listing exchange. It is possible that the market price of fund shares and the fund's NAV will vary significantly. As a result, you may sustain losses if you pay more than the shares' NAV when you purchase shares, or receive less than the shares' NAV when you sell shares, in the secondary market. During the existence of extreme market volatility and/or a lack of an active trading market for the fund's shares, the market price of fund shares is more likely to diverge significantly from the fund's NAV. During such periods, you may be unable to sell your shares of the fund or may incur significant losses if you sell your shares. Disruptions at market makers, Authorized Participants or other market participants may also result in significant differences between the market price of the fund's shares and the fund's NAV.

The market price of shares during the trading day, like the price of any exchange-traded security, includes a bid/ask spread charged by the exchange specialist, market makers, or other participants that

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trade the particular security. In times of severe market disruption or volatility, the bid/ask spread can increase significantly. At those times, shares of the fund are most likely to be traded at a discount to NAV, and the discount is likely to be greatest when the price of fund shares is falling fastest. Securities held by the fund may be traded in markets that close at a different time than the listing exchange. During the time when the listing exchange is open but after the applicable market closing, fixing or settlement times, bid/ask spreads and the resulting premium or discount to the fund's NAV may widen.

**Authorized Participant Risk:** Only financial institutions authorized to transact daily with the fund (Authorized Participants) may engage in creation or redemption transactions directly with the fund, and Authorized Participants are not obligated to do so. The fund has a limited number of intermediaries that act as Authorized Participants. There are no obligations of market makers to make a market in the fund's shares or of Authorized Participants to submit creation or redemption orders for Creation Units. Decisions by market makers and/or Authorized Participants to reduce their role with respect to market making or creation and redemption activities during times of market stress, or a decline in the number of Authorized Participants due to decisions to exit the business, bankruptcy, or other factors, could inhibit the effectiveness of the arbitrage process in maintaining the relationship between the underlying value of the fund's portfolio securities and the market price of fund shares. To the extent an Authorized Participant cannot or is otherwise unwilling to engage in creation and redemption transactions, and no other Authorized Participant creates or redeems shares in such transactions, shares of the fund may trade at a significant discount or premium to NAV and may face trading halts and/or delisting from the exchange.

**Trading Issues Risk:** Although shares are listed on an exchange, there can be no assurance that an active secondary trading market will develop or continue. In addition, trading of shares in the secondary market may become less liquid or may be halted, for example, due to activation of market-wide "circuit breakers." If trading halts or an unanticipated early closing of the listing exchange occurs, a shareholder may be unable to purchase or sell shares of the fund. MFD, the distributor of the fund's shares, does not maintain a secondary market in the shares. There can be no assurance that requirements for the fund to remain listed on the exchange will be met or maintained. If the fund's shares are delisted from the listing exchange, MFS may seek to list the fund's shares on another exchange, merge the fund with another exchange-traded fund or mutual fund, or redeem the fund's shares at NAV. Shares of the fund, similar to shares of other issuers listed on a stock exchange, may be sold short and are therefore subject to the risk of increased volatility and price decreases associated with being sold short. Most fund investors will buy and sell fund shares on the listing exchange or on another secondary market. When buying or selling shares of the fund, investors typically will pay brokerage commissions or other charges imposed by financial intermediaries as determined by that financial intermediary.

**Cash Transactions Risk:** Unlike certain ETFs, the fund may effect some or all creations and redemptions using cash, rather than in-kind securities. Therefore, the fund may be required to sell portfolio securities and recognize gains on such sales that the fund might not have recognized if it were to distribute portfolio securities in-kind. As a result, an investment in the fund may be less tax-efficient than an investment in an ETF that distributes portfolio securities entirely in-kind. The use of cash creations and redemptions may also cause the fund's shares to trade in the market at greater bid/ask spreads or greater premiums or discounts to the fund's NAV. Furthermore, cash creation and redemption transactions may result in certain brokerage, tax, foreign exchange, execution, price movement and other costs, and expenses related to the execution of trades resulting from such transactions. To the extent that the maximum additional charge for creation or redemption transactions is insufficient to cover these costs and expenses, the fund's performance could be negatively impacted.

#### Other Investment Strategies and Risks
**Active and Frequent Trading:** MFS may engage in active and frequent trading in pursuing the fund's principal investment strategies. Frequent trading may increase transaction costs, which can reduce the fund's return. Frequent trading can also increase the possibility of capital gain and ordinary distributions. Frequent trading can also result in the realization of a higher percentage of short-term capital gains and a lower percentage of long-term capital gains as compared to a fund that trades less frequently. Because short-term capital gains are distributed as ordinary income, this would generally increase your tax liability unless you hold your shares through a tax-advantaged or tax-exempt vehicle.

**Operational and Cybersecurity Risk:** The fund and its service providers, and your ability to transact in fund shares, may be negatively impacted due to operational matters arising from, among other issues, human errors, systems and technology disruptions or failures, fraudulent activities, or cybersecurity incidents. Operational issues and cybersecurity incidents may cause the fund or its service providers, as well as securities trading venues and other market participants, to suffer data corruption and/or lose operational functionality, and could, among other things, impair the ability to calculate the fund's net asset value per share, impede trading of portfolio securities, and result in the theft, misuse, and/or improper release of confidential information relating to the fund or its shareholders. Such operational issues and cybersecurity incidents may result in losses to the fund and its shareholders. Because technology is frequently changing, new ways to carry out cyberattacks continue to develop. In addition, the rapid development and increasingly widespread use of new technologies, including machine learning technology and generative models could exacerbate these risks. Therefore, there is a chance that certain risks have not been identified or prepared for, or that an attack may not be detected, which puts limitations on the ability of the fund and its service providers to plan for or respond to a cyberattack. Information relating to the fund's investments is delivered electronically, which can give rise to a number of risks, including, but not limited to, the risks that such communications may not be secure and may contain computer viruses or other defects, may not be accurately replicated on other systems, or may be intercepted, deleted or interfered with, without the knowledge of the sender or the intended recipient. Furthermore, geopolitical tensions could increase the scale and sophistication of deliberate cybersecurity attacks, particularly those from nation-states or from entities with nation-state backing.

**Temporary Defensive Strategy:** In response to adverse market, economic, industry, political, or other conditions, MFS may depart from the fund's principal investment strategies by temporarily investing for defensive purposes. When MFS invests defensively, different factors could affect the fund's performance and the fund may not achieve its investment objective. In addition, the defensive strategy may not work as intended.

**Further Information on Investment Strategies, Types, and Risks:** Information about investment strategies and investment types not described in the prospectus and the risks associated with those investment strategies and investment types are described in the fund's Statement of Additional Information (SAI).

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#### Management of the Fund

#### Investment Adviser
MFS, located at 111 Huntington Avenue, Boston, Massachusetts 02199, serves as the investment adviser for the fund. Subject to the supervision of the fund's Board of Trustees, MFS is responsible for managing the fund's investments, executing transactions, and providing related administrative services (including certain financial, legal, and other administrative services) and facilities under an Investment Management Agreement between the fund and MFS.

The management fee set forth in the Investment Management Agreement is 0.38% of the fund's average daily net assets annually.

The management fee includes investment management services and ordinary, recurring operating expenses, except for certain expenses. The following expenses are excluded from the all-inclusive management fee: (i) interest expense or other costs of the fund's borrowing(s) or financing activities; (ii) taxes (including, but not limited to, income, excise, transfer and withholding taxes, including any accrued deferred tax liability) and governmental fees levied against the fund; (iii) costs of any litigation such as any indemnification obligation, attorneys' fees, expenses, costs, judgments, amounts paid in settlement, fines, penalties, fees of expert witnesses, document production fees, and all other liabilities incurred or paid by the fund or a person indemnified by a fund; (iv) costs associated with any tax reclaims or similar actions, including any fees paid on a contingent basis; (v) brokerage fees and commissions and other investment-related transaction costs incurred by or for the fund; (vi) expenses of a fund's securities lending, if any, including any securities lending agent fees, as governed by a separate securities lending agreement; (vii) expenses incident to meetings of fund shareholders and the associated preparation, filing, printing and mailing of related notices and proxy statements; (viii) expenses incurred in connection with the provision of distribution services under a plan adopted pursuant to Rule 12b-1 under the 1940 Act (if any); (ix) investment-related expenses (such as interest and borrowing expenses incurred in connection with the fund's investment activity, and fees and expenses associated with investments in investment companies and other similar investment vehicles); (x) expenses of a fund which are capitalized in accordance with generally accepted accounting principles; (xi) the fee paid to MFS pursuant to this Agreement; (xii) other nonrecurring or extraordinary expenses (as determined by a majority of the Trustees of the trust who are not "interested persons" of the trust); and (xiii) such other expenses as approved by a majority of the trust's Board of Trustees.

A discussion regarding the basis for the Board of Trustees' approval of the Investment Management Agreement will be available in the fund's Form N-CSR filing with the SEC for the period that ends August 31, 2026, and in the related financial statements posted online at etfs.mfs.com.

MFS is America's oldest mutual fund organization. MFS and its predecessor organizations have a history of money management dating from 1924 and the founding of the first mutual fund, Massachusetts Investors Trust. Net assets under the management of the MFS organization were approximately $621 billion as of March 31, 2026.

**Disclosure of Portfolio Holdings**. The fund has established a policy with respect to the disclosure of fund portfolio holdings. A description of this policy is provided in the SAI.

On each business day, before commencement of trading on the Exchange, the fund will disclose on www.mfs.com the identities and quantities of the fund's portfolio holdings that will form the basis for the fund's calculation of NAV at the end of the business day. Other information concerning the fund's portfolio holdings may also be published on the fund's website from time to time.

#### Portfolio Manager(s)
Information regarding the portfolio manager(s) of the fund is set forth below. Further information regarding the portfolio manager(s), including other accounts managed, compensation, ownership of fund shares, and possible conflicts of interest, is available in the fund's SAI.

---

| | | |
|:---|:---|:---|
| **&nbsp;&nbsp;&nbsp;&nbsp;Portfolio Manager** | **Primary Role** | **&nbsp;&nbsp;&nbsp;&nbsp;Five Year History** |
| &nbsp;&nbsp;Jonathan Sage | &nbsp;&nbsp;Co-Lead Portfolio Manager | &nbsp;&nbsp;Employed in the investment area of MFS since 2000 |
| &nbsp;&nbsp;Jenney Zhang | &nbsp;&nbsp;Co-Lead Portfolio Manager | &nbsp;&nbsp;Employed in the investment area of MFS since 2011 |
| &nbsp;&nbsp;Nathan Bryant | &nbsp;&nbsp;Portfolio Manager | &nbsp;&nbsp;Employed in the investment area of MFS since 2015 |
| &nbsp;&nbsp;Jed Stocks | &nbsp;&nbsp;Portfolio Manager | &nbsp;&nbsp;Employed in the investment area of MFS since 2001  |

---

#### Administrator
MFS provides the fund with certain financial, legal, and other administrative services pursuant to an Investment Management Agreement. MFS bears the costs of the administrative services provided under the Investment Management Agreement.

#### Transfer Agent
State Street Bank and Trust Company (State Street) serves as the fund's transfer agent and dividend disbursing agent. MFS bears the costs of the services provided under the transfer agency agreement.

#### Distributor
MFS Fund Distributors, Inc. (MFD), a wholly-owned subsidiary of MFS, is the distributor of shares of the fund.

#### Distribution and Service Fees
The fund has adopted a plan in accordance with Rule 12b-1 under the Investment Company Act of 1940, as amended (the Distribution Plan). Under the Distribution Plan, the fund is authorized to pay distribution and/or service fees to MFD of up to 0.25% of the fund's average daily net assets to support the sale and distribution of the fund's shares, and/or shareholder servicing and account maintenance activities.

These fees are paid out of fund assets. Because these fees are an ongoing expense of the fund, they increase the cost of your investment over time and may cost you more than other types of sales charges.

The fund's Board of Trustees has determined not to implement payments of Rule 12b-1 fees under the Distribution Plan at this time. The 12b-1 fee may only be imposed when the Board of Trustees determines that it is in the best interests of shareholders to do so.

#### Financial Intermediary Compensation
The term "financial intermediary" refers to any broker, dealer, bank (including bank trust departments), registered investment adviser, financial planner, retirement plan administrator, third-party administrator, insurance company, and any other institution having a selling, administration, or any other similar or related agreement with MFD, MFS, or any of their affiliates. Financial intermediaries receive various forms of compensation in connection with the sale of shares of a fund and/or the servicing of shareholder accounts.

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MFS Blended Research Small-Mid Cap ETF

Financial intermediaries may receive such compensation in the form of payments paid by MFD and/or one or more of its affiliates (for purposes of this section only, collectively, "MFD") from MFD's own additional resources, which may be made to the financial intermediary or its affiliate.

Certain financial intermediaries receive payments from MFD from MFD's own additional resources as incentives to market the MFS funds, to participate in MFD's promotional efforts and/or in recognition of their marketing support, administrative services, and/or transaction processing support, which may be made to the financial intermediary or its affiliate. This compensation from MFD is not reflected in the "Fees and Expenses" table in the fund's prospectus. MFD compensates financial intermediaries based on criteria established by MFD from time to time, including the distribution potential of the financial intermediary, the types of products and programs offered by the financial intermediary, eligibility for placement on the financial intermediary's preferred or recommended list, the financial and contractual terms with the financial intermediary, the level and/or type of marketing and administrative support provided by the financial intermediary, and the quality of the overall relationship with the financial intermediary. In particular, MFD normally considers the level of assets attributable to the financial intermediary, the level of redemptions by the financial intermediary, the level of access to the financial intermediary's representatives and management, the ability to educate the representatives of the financial intermediary about the MFS funds, and the number of representatives of the financial intermediary potentially utilizing the MFS funds with their clients.

MFD makes these additional payments to financial intermediaries for marketing support and administrative services with respect to fund shares sold or held through the financial intermediary's distribution network and/or through programs such as retirement programs, qualified tuition programs, fund supermarkets, fee-based advisory or wrap fee programs, bank trust programs, and insurance (e.g., individual or group annuity) programs. MFD also makes payments to certain financial intermediaries to help offset the costs associated with client account maintenance support, statement preparation, and transaction processing. To the extent permitted by SEC and Financial Industry Regulatory Authority (FINRA) rules and other applicable laws and regulations, MFD makes other payments or allows other promotional incentives or payments to financial intermediaries.

The types of payments described above are not exclusive and such payments can be significant to the financial intermediary. In addition, the compensation that financial intermediaries receive may vary by fund and/or class of shares sold and among financial intermediaries. Depending upon the arrangements in place at any particular time, financial intermediaries may have a financial incentive to recommend a particular fund or share class when a less expensive option with the same or similar characteristics is available or to recommend MFS funds instead of other funds that generate less or no compensation for the financial intermediary. Likewise, such compensation could create incentives for the financial intermediary to hold an investment longer than might be appropriate, or conversely, to make more frequent exchanges or other transactions than might be necessary.

You can find further details in the SAI about the payments made by MFD and its affiliates and the services provided by financial intermediaries. Financial intermediaries may charge you additional fees and/or commissions other than those disclosed in this prospectus. You should ask your financial intermediary for information about any payments it receives from MFD and its affiliates and any services it provides, as well as about fees and/or commissions it charges you. Financial intermediaries that sell or transact in fund shares may also act as a broker/dealer in connection with an MFS fund's purchase or sale of portfolio securities. However, the fund and MFS do not consider financial intermediaries' sales of shares of an MFS fund as a factor when choosing broker/dealers to effect portfolio transactions for the MFS funds.

#### Additional Information About the Purchase and Sale of Fund Shares
Shares of the fund may be created or redeemed directly from the fund only in Creation Units or multiples thereof.

**Directly with the Fund.** Fund shares are issued or redeemed only in large blocks of fund shares (previously defined as "Creation Units"), and the fund only transacts with financial institutions known as Authorized Participants, in accordance with procedures described in the SAI. Creation Unit transactions are conducted in exchange for the deposit or delivery of a designated basket of in-kind securities and/or cash at NAV next determined after receipt of an order in proper form. Creation Unit transactions may be made on any day that the Exchange is open for business. The fund reserves the right, but does not have the obligation, to reject any creation or redemption transaction at any time.

When creating or redeeming Creation Units, Authorized Participants are required to pay a fixed purchase or redemption transaction fee as well as any applicable additional variable charge, as described in the SAI.

An Authorized Participant may create or redeem a Creation Unit of the fund on any business day in exchange for the delivery of a designated basket of in-kind securities and/or cash. The fund may, in certain circumstances, offer creation units partially or solely for cash. Creation and redemption baskets may differ, and the fund may accept "custom baskets." More information regarding custom baskets is contained in the SAI. The prices at which creations and redemptions occur are based on the next calculation of NAV after a creation or redemption order is received in proper form under the applicable Authorized Participant Agreement. Authorized Participants may create or redeem Creation Units for their own accounts or for their customers, including, without limitation, affiliates of the fund.

The fund anticipates regularly meeting redemption requests primarily through in-kind redemptions. However, the fund reserves the right to pay redemption proceeds to an Authorized Participant entirely or partly in cash. Under normal circumstances, the fund will pay out redemption proceeds to a redeeming Authorized Participant within two business days after the Authorized Participant's redemption request is received, in accordance with the process set forth in the fund's SAI and in the agreement between the Authorized Participant and MFD. However, the fund may delay processing an Authorized Participant's redemption request for up to seven days. Under unusual circumstances, such as when the Exchange is closed, trading on the Exchange is restricted, or as permitted by the SEC, the fund may suspend redemptions or postpone payment for more than seven days. With respect to redemptions that include foreign common stock, the fund may pay out redemption proceeds or deliver the securities up to 15 days after the receipt of a redemption request.

Information about the procedures regarding creation and redemption of Creation Units (including the cut-off times for receipt of creation and redemption orders) and the applicable transaction fees and/or any variable fees is included in the fund's SAI.

**In the Secondary Market.** Individual shares of the fund may be purchased and sold only on a national securities exchange through

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brokers. Fund shares are listed for trading on the Exchange and may be sold at a premium or discount to NAV. As a result, you may pay more than NAV when you purchase shares, and receive less than NAV when you sell shares, in the secondary market. If you buy or sell shares in the secondary market, you will generally incur customary brokerage commissions and charges and you may also incur the cost of the spread between the price at which a dealer will buy fund shares and the somewhat higher price at which a dealer will sell shares. Due to such commissions and charges and spread costs, frequent trading of the fund's shares may detract significantly from investment returns. There are various methods by which investors can purchase and sell shares and various orders that may be placed. You should consult your financial intermediary before purchasing or selling shares of the fund. The trading prices of the fund's shares in the secondary market generally differ from the fund's daily NAV per share and are affected by market forces such as supply and demand, economic conditions, and other factors. Information regarding the intraday indicative value (IIV) of the fund may be disseminated every 15 seconds throughout the trading day by the national securities exchange on which the fund's shares are primarily listed or by market data vendors or other information providers. The IIV is based on the current market value of the securities and/or cash included in the fund's IIV basket. The IIV does not necessarily reflect the precise composition of the current portfolio of securities and instruments held by the fund at a particular point in time or the best possible valuation of the current portfolio. Unlike the fund's NAV, the IIV may not reflect estimated accrued interest, dividends and other income, or fund expenses. Therefore, the IIV should not be viewed as a "real-time" update of the NAV, which is computed only once a day. The IIV is generally determined by using both current market quotations and/or price quotations obtained from broker-dealers that may trade in the portfolio securities and instruments included in the fund's IIV basket. The fund is not involved in, or responsible for, the calculation or dissemination of the IIV and makes no representation or warranty as to its accuracy. An inaccuracy in the IIV could result from various factors, including the difficulty of pricing portfolio instruments on an intraday basis.

**Premium and Discount Information.** Information showing the number of days the market price of the fund's shares was greater than the fund's NAV (premium) and the number of days it was less than the fund's NAV (discount) for various time periods is available at www.mfs.com. NAV is the price at which the fund issues and redeems its shares, and it is calculated in accordance with the fund's valuation policy and procedures. On the other hand, the market price is generally the official closing price of the fund's shares on an exchange. The fund's market price may be at, above (at a premium) or below (at a discount) to its NAV on days the Exchange is open for trading. The NAV of the fund will fluctuate with changes in the value of its portfolio holdings. The market price of the fund will fluctuate based on changes in the fund's NAV, as well as market supply and demand. Shareholders may pay more than NAV when they buy fund shares and less than NAV when they sell fund shares because such shares are bought and sold at current market prices. The market price is also used to calculate the market returns of the fund.

**Frequent Trading.** The fund's Board of Trustees has not adopted policies and procedures designed to prevent or monitor for frequent purchases and redemptions of the fund's shares because the fund sells and redeems shares at NAV only in Creation Units, pursuant to the terms of the agreement between an Authorized Participant and MFD**,** and such direct trading between the fund and Authorized Participants is critical to seeking to ensure that the fund's shares trade at or close to NAV. Further, the vast majority of trading in fund shares occurs on the secondary market, which does not involve the fund directly and, therefore, does not cause the fund to experience many of the harmful effects of market timing, such as dilution and disruption of portfolio management. In addition, the fund may impose a transaction fee on Creation Unit transactions, which is designed to offset transfer and other transaction costs incurred by the fund in connection with the issuance and redemption of Creation Units and may employ fair valuation pricing to minimize potential dilution from market timing. The fund reserves the right to reject any purchase order at any time and reserves the right to impose restrictions on disruptive, excessive, or short-term trading.

#### Other Information

#### Valuation

#### Determination of Fund Net Asset Value
The price of the fund's shares is based on its net asset value. The net asset value of the fund's shares is determined each day the New York Stock Exchange LLC (the "NYSE") is open for trading as of the close of regular trading on the NYSE (generally 4:00 p.m. Eastern time). However, net asset value may be calculated earlier in emergency situations or as otherwise permitted by the SEC. Net asset value per share is computed by dividing the net assets allocated to the fund by the number of shares outstanding for that fund. On days when the NYSE is closed (such as weekends and holidays), net asset value is not calculated, and the fund does not transact creation and redemption orders. To the extent the fund's assets are traded in other markets on days when the fund does not price its shares, the value of the fund's assets will likely change when shareholders will not be able to purchase or redeem shares of the fund.

To determine net asset value, the fund's investments for which reliable market quotations are readily available are valued at market value, and funds in which the fund invests are generally valued at their net asset value per share. Certain short term debt instruments may be valued at amortized cost.

The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund's investments to MFS pursuant to the fund's valuation policy and procedures approved by the Board of Trustees. The Board of Trustees has designated MFS as the "valuation designee" of the fund. As valuation designee, MFS will determine the fair value, in good faith, of securities and other instruments held by the fund for which market quotations are not readily available and, among other things, will assess and manage material risks associated with fair value determinations, select, apply, and test fair value methodologies, and oversee and evaluate pricing services used in valuing the fund's investments. If MFS determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by MFS in accordance with the fair valuation policy and procedures adopted by MFS.

In addition, investments may be valued at fair value if MFS determines that an investment's value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as a foreign exchange or market) and prior to the determination of the fund's net asset value, or after the halting of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur on a frequent basis after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund's net asset value may be deemed to have a material effect on the value of

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MFS Blended Research Small-Mid Cap ETF

securities traded in foreign markets. Accordingly, foreign equity securities may be valued at fair value. MFS generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost, and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment.

The value of an investment for purposes of calculating the fund's net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund's net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.

#### Market Share Prices
Shares of the fund may be purchased and sold by investors in the secondary market through a financial intermediary at market price, which may vary throughout the trading day and may differ from NAV.

#### Distributions
The fund intends to declare and pay any dividends to shareholders at least annually.

Any capital gains are distributed at least annually.

#### Distribution Options
No dividend reinvestment options are offered by the fund. Dividend distributions may be reinvested automatically in additional shares only if the financial intermediary through which an investor purchased fund shares makes such option available.

Beneficial owners of fund shares should contact their financial intermediary to determine the availability and costs of a dividend reinvestment program.

#### Book Entry
Shares of the fund are held in book-entry form, which means that no stock certificates are issued. The Depository Trust Company (DTC), or its nominee, is the registered owner of, and holds legal title to, all outstanding shares of the fund. Your beneficial ownership of shares will be shown on the records of DTC and the DTC participant financial intermediary through which you hold the shares. As beneficial owner of shares, you are not entitled to receive physical delivery of share certificates or have shares registered in your name, and you are not considered a registered owner of fund shares. Therefore, to exercise any rights as an owner of fund shares, you must rely on the procedures of DTC and its participants.

Your financial intermediary will provide you with account statements, confirmations of your purchases and sales, and tax information. Your financial intermediary will also be responsible for distributing income and capital gain distributions and for sending you shareholder reports and other information as may be required.

#### Note to Authorized Participants Regarding Continuous Offering
Certain legal risks may exist that are unique to Authorized Participants purchasing Creation Units directly from the fund. Because new Creation Units may be issued on an ongoing basis, at any point a "distribution," as such term is used in the Securities Act of 1933, as amended (Securities Act), could be occurring. As a broker-dealer, certain activities that Authorized Participants perform may, depending on the circumstances, result in the Authorized Participant being deemed a participant in a distribution, in a manner which could render the Authorized Participant a statutory underwriter and subject the Authorized Participant to the prospectus delivery and liability provisions of the Securities Act.

For example, an Authorized Participant may be deemed a statutory underwriter if the Authorized Participant purchases Creation Units from the fund, breaks them down into individual fund shares, and sells such shares directly to customers, or if the Authorized Participant chooses to couple the creation of a supply of new fund shares with an active selling effort involving solicitation of secondary market demand for fund shares. A determination of whether a person is an underwriter for purposes of the Securities Act depends upon all of the facts and circumstances pertaining to that person's activities, and the examples mentioned here should not be considered a complete description of all the activities that could lead to a categorization as an underwriter.

Dealers who are not "underwriters" but are participating in a distribution (as opposed to engaging in ordinary secondary market transactions), and thus dealing with shares as part of an "unsold allotment" within the meaning of Section 4(a)(3)(C) of the Securities Act, will be unable to take advantage of the prospectus delivery exemption provided by Section 4(a)(3) of the Securities Act. This is because the prospectus delivery exemption in Section 4(a) (3) of the Securities Act is not available in respect of such transactions as a result of Section 24(d) of the Investment Company Act of 1940, as amended. As a result, financial intermediaries should note that dealers who are not underwriters but are participating in a distribution (as opposed to engaging in ordinary secondary market transactions) and thus dealing with the shares that are part of an overallotment within the meaning of Section 4(a)(3)(A) of the Securities Act would be unable to take advantage of the prospectus delivery exemption provided by Section 4(a)(3) of the Securities Act. Firms that incur a prospectus delivery obligation with respect to shares of the fund are reminded that, under Rule 153 under the Securities Act, a prospectus delivery obligation under Section 5(b) (2) of the Securities Act owed to an exchange member in connection with a sale on an exchange is satisfied by the fact that the prospectus is available at the exchange upon request. The prospectus delivery mechanism provided in Rule 153 is only available with respect to transactions on an exchange. Certain affiliates of the fund may purchase and resell fund shares pursuant to this prospectus.

#### Tax Considerations
The following discussion is very general. You are urged to consult your tax adviser regarding the effect that an investment in the fund will have on your particular tax situation, including possible U.S. federal, state, and local and non-U.S. taxes. This discussion does not apply to shares of the fund held through tax-advantaged accounts such as retirement plans or by shareholders that are not "United States persons" under the Internal Revenue Code of 1986, as amended (Internal Revenue Code).

The fund expects to distribute substantially all of its income and gains annually. Distributions from the fund are generally taxable to shareholders. If you buy shares when the fund has realized but not yet distributed ordinary income or capital gains, you will pay full price for the shares and then receive a portion back as a taxable distribution if you continue to hold the shares through that distribution's record date.

Any gain resulting from the redemption, sale, or exchange of your shares will generally also be subject to tax.

For U.S. federal income tax purposes, distributions of investment income are generally taxable as ordinary income. Taxes on

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MFS Blended Research Small-Mid Cap ETF

distributions of capital gains are determined by how long the fund owned or is deemed to have owned the investments that generated them, rather than how long you have owned your shares of the fund. Distributions of gains from the sale of investments that the fund owned for more than one year and that are properly reported by the fund as capital gain dividends will be treated as long-term capital gains includible in net capital gain and taxed to individuals at reduced rates. Distributions of gains from the sale of investments that the fund owned for one year or less will be taxable as ordinary income. If some or all of the fund's income derives from "qualified dividend income" and if you are an individual who meets holding period and other requirements with respect to the fund's shares, those distributions that are properly reported by the fund as derived from qualified dividend income are taxed to you at the reduced rates applicable to net capital gains.

A 3.8% Medicare contribution tax is generally imposed on distributions paid by the fund (other than exempt-interest dividends, if any) to, and net gains recognized on the sale, redemption, exchange, or other taxable disposition of shares of the fund by certain individuals, estates, and trusts to the extent their income exceeds certain threshold amounts.

The fund's investments in foreign securities may be subject to foreign withholding or other taxes, which will decrease the fund's return on those securities; you generally are not expected to be eligible to claim a credit (or a deduction) for such amounts on your U.S. federal income tax return.

The IRS Form 1099 that is provided to you early each year details your distributions from the fund and how they are treated for U.S. federal tax purposes, and cost basis information for shares purchased on or after January 1, 2012, that you redeemed, sold, or exchanged. Our default method for calculating cost basis is average cost basis. More information about other cost basis methods and a cost basis selection/change form is available on **mfs.com**. If your account is held by your financial intermediary, you must contact your financial intermediary to obtain information about available cost basis methods and cost basis elections for your account.

**Authorized Participants.** An Authorized Participant that exchanges securities for Creation Units may realize a gain or loss equal to the difference between the fair market value of the Creation Units at the time of purchase and the sum of the Authorized Participant's cost basis in the securities transferred plus any cash paid.

An Authorized Participant that exchanges Creation Units for securities may realize a gain or loss equal to the difference between the Authorized Participant's cost basis in the Creation Units and the sum of the fair market value of the securities plus any cash received. The Internal Revenue Service (IRS), however, may assert that a loss realized upon an exchange of primarily securities for Creation Units cannot be deducted currently under the rules governing "wash sales," or on the basis that there has been no significant change in economic position.

Authorized Participants who are dealers in securities are subject to different tax treatment on the exchange for or redemption of Creation Units. Authorized Participants exchanging securities for Creation Units or redeeming Creation Units should consult with their own tax advisor.

#### Information about the Summary Prospectus, Prospectus, and SAI
The summary prospectus, prospectus, and SAI for a fund provide information concerning the fund. The summary prospectus, prospectus, and SAI are updated at least annually and any information provided in a summary prospectus, prospectus, or SAI can be changed without a shareholder vote unless specifically stated otherwise. The summary prospectus, prospectus, and SAI are not contracts between the fund and its shareholders and do not give rise to any contractual rights or obligations or any shareholder rights other than any rights conferred by federal or state securities laws that may not be waived.

#### Derivative Actions and Forum Selection
The trust's Declaration of Trust provides that shareholders may not bring suit on behalf of the fund without first requesting that the Board of Trustees bring such suit unless there would be irreparable injury to the fund or if a majority of the Board of Trustees (or a majority of the Board of Trustees on any committee established to consider the merits of such action) have a personal financial interest in the action. This provision of the Declaration of Trust does not apply to claims arising under federal securities laws. Trustees of the trust are not considered to have a personal financial interest by virtue of being compensated for their services as Trustees of the trust or as trustees of MFS funds with the same or an affiliated investment adviser or distributor.

Under the trust's By-Laws and Declaration of Trust, any claims asserted against or on behalf of the fund, including claims against Trustees and Officers of the trust, must be brought in state and federal courts located within the Commonwealth of Massachusetts. The designation of exclusive forum may make it more expensive for a shareholder to bring a suit and may limit a shareholder's ability to litigate a claim in a jurisdiction or forum that may be more convenient or favorable to the shareholder.

#### Provision of Shareholder Reports and Summary Prospectuses
The fund produces shareholder reports every six months and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one paper copy of the fund's annual and semiannual shareholder report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund (please see back cover for telephone number) to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

#### Additional Information on Fees and Expenses
<u>Fees and Expenses</u>

The annual fund operating expenses shown in "Fees and Expenses" are based on estimated "Other Expenses" for the current fiscal year expressed as a percentage of a fund's estimated average net assets during the period.

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MFS Blended Research Small-Mid Cap ETF

#### Financial Highlights
The fund had not commenced operations as of the date of this prospectus; therefore, no Financial Highlights are included.

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MFS Blended Research Small-Mid Cap ETF

#### MFS Blended Research Small-Mid Cap ETF
**Shareholder Communications with the Board of Trustees.** Shareholders may mail written communications to the Board of Trustees to the attention of the Board of Trustees, [fund name], Massachusetts Financial Services Company, 111 Huntington Avenue, Boston, MA 02199, Attention: Fund Secretary. Shareholder communications must (i) be in writing and be signed by the shareholder, (ii) identify the MFS fund to which they relate, and (iii) identify the number of shares held by the shareholder.

#### If you want more information about MFS Blended Research Small-Mid Cap ETF, the following documents are available free upon request:
**Annual/Semiannual Reports and Form N-CSR Filings.** The fund's annual and semiannual shareholder reports and Form N-CSR contain information about the fund's actual investments. Annual shareholder reports discuss the effect of recent market conditions and investment strategies on the fund's performance during its last fiscal year. Form N-CSR includes the fund's annual and semiannual financial statements.

**Statement of Additional Information (SAI).** The SAI, dated May 19, 2026, as may be amended or supplemented from time to time, provides more detailed information about the fund and is incorporated into this prospectus by reference.

You can get free copies of the SAI, annual/semiannual shareholder reports, fund financial statements, and other information about the fund, including current net asset values per share, and make inquiries about the fund, by contacting:

Internet: **mfs.com**

Telephone: 1-800-637-5637

Reports and other information about the fund are available on the EDGAR Database on the Commission's Internet website at **http://www.sec.gov**, and copies of this information may be obtained, upon payment of a duplicating fee, by electronic request at the following e-mail address: **publicinfo@sec.gov**.

The fund's Investment Company Act file number is 811-23953.

------

#### Statement of Additional Information
May 19, 2026

---

| | | |
|:---|:---|:---|
| **Fund** | **Ticker Symbol** | **Principal U.S. Listing Exchange** |
| **MFS<sup>®</sup> Active Exchange Traded Funds Trust:** |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS<sup>®</sup> Active Core Plus Bond ETF** | MFSB | New York Stock Exchange LLC |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS<sup>®</sup> Active Growth ETF** | MFSG | New York Stock Exchange LLC |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS<sup>®</sup> Active Intermediate Muni Bond ETF** | MFSM | New York Stock Exchange LLC |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS<sup>®</sup> Active International ETF** | MFSI | New York Stock Exchange LLC |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS<sup>®</sup> Active International Value ETF** | MIVL | NYSE Arca, Inc. |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS<sup>®</sup> Active Mid Cap ETF** | MMID | New York Stock Exchange LLC |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS<sup>®</sup> Active Value ETF** | MFSV | New York Stock Exchange LLC |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS<sup>®</sup> Blended Research<sup>®</sup> Core Equity ETF** | BRCE | New York Stock Exchange LLC |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS<sup>®</sup> Blended Research<sup>®</sup> Emerging Markets Equity ETF** | BREE | New York Stock Exchange LLC |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS<sup>®</sup> Blended Research<sup>®</sup> International Equity ETF** | BRIE | New York Stock Exchange LLC |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS<sup>®</sup> Blended Research<sup>®</sup> Small-Mid Cap ETF** | BRSM | NYSE Arca, Inc. |

---

This Statement of Additional Information ("SAI") contains additional information about each fund listed above (references to "a Fund" or "the Fund" mean each Fund listed on the cover page, unless otherwise noted), and should be read in conjunction with the Fund's Prospectus dated May 19, 2026, for each of MFS Active International Value ETF and MFS Blended Research Small-Mid Cap ETF; dated December 10, 2025 (As Amended March 5, 2026), for MFS Blended Research Emerging Markets Equity ETF; dated September 30, 2025, for MFS Blended Research Core Equity ETF and MFS Blended Research International Equity ETF; dated August 26, 2025, for MFS Active Mid Cap ETF; and dated June 27, 2025, for all other Funds, as may be amended or supplemented from time to time. For each Fund except MFS Active International Value ETF, MFS Blended Research Emerging Markets Equity ETF, and MFS Blended Research Small-Mid Cap ETF, the Fund's financial statements are incorporated into this SAI by reference to the Fund's most recent annual Form N-CSR ("Form N-CSR") filed with the U.S. Securities and Exchange Commission (the "SEC"). The Fund's financial statements are set forth in Item 7 of the Fund's annual Form N-CSR, which is available at the hyperlink noted below for the Trust. The MFS Active International Value ETF, the MFS Blended Research Emerging Markets Equity ETF, and the MFS Blended Research Small-Mid Cap ETF had not commenced operations as of the fiscal year ended February 28, 2026; therefore, no Financial Statements nor Financial Highlights for such Funds are incorporated by reference into this SAI.

[MFS Active Exchange Traded Funds Trust](http://www.sec.gov/ix?doc=/Archives/edgar/data/2018846/000119312526184598/8de9bef5ca2e2d3.htm)

You may obtain a copy of each Fund's Prospectus, and for each Fund other than the MFS Active International Value ETF, MFS Blended Research Emerging Markets Equity ETF, and MFS Blended Research Small-Mid Cap ETF, each Fund's Annual Report, without charge by calling 1-800-637-5637.

#### This SAI is NOT a prospectus and is authorized for distribution to prospective investors only if preceded or accompanied by a current prospectus.
ETF-SAI-COMBINED-051926

------

**Table of Contents**:

---

| | |
|:---|:---|
| [DEFINITIONS](#x1x4) | [1](#x1x4) |
| [MANAGEMENT OF THE FUND](#x2x4) | [1](#x2x4) |
| [EXCHANGE LISTING AND TRADING](#x3x4) | [5](#x3x4) |
| [CONTINUOUS OFFERING](#x4x4) | [6](#x4x4) |
| [DISTRIBUTION PLAN](#x5x4) | [6](#x5x4) |
| [FINANCIAL INTERMEDIARY COMPENSATION](#x6x4) | [7](#x6x4) |
| [INVESTMENT STRATEGIES, RISKS, AND RESTRICTIONS](#x7x4) | [7](#x7x4) |
| [NET INCOME AND DISTRIBUTIONS](#x8x4) | [7](#x8x4) |
| [TAX CONSIDERATIONS](#x9x4) | [8](#x9x4) |
| [BOOK ENTRY ONLY SYSTEM](#x10x4) | [15](#x10x4) |
| [PURCHASE AND REDEMPTION OF CREATION UNITS](#x11x4) | [16](#x11x4) |
| [PORTFOLIO TRANSACTIONS AND BROKERAGE COMMISSIONS](#x12x4) | [21](#x12x4) |
| [DISCLOSURE OF PORTFOLIO HOLDINGS AND OTHER FUND INFORMATION](#x13x4) | [22](#x13x4) |
| [DETERMINATION OF NET ASSET VALUE](#x14x4) | [24](#x14x4) |
| [DESCRIPTION OF SHARES, VOTING RIGHTS, AND LIABILITIES](#x15x4) | [25](#x15x4) |
| [INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM(S) AND FINANCIAL STATEMENTS](#x16x4) | [26](#x16x4) |
| [APPENDIX A -- TRUSTEES AND OFFICERS -- IDENTIFICATION AND <br>BACKGROUND](#x17x4) | A- [1](#x17x4) |
| [APPENDIX B - TRUSTEE COMPENSATION AND COMMITTEES](#x18x4) | B- [1](#x18x4) |
| [APPENDIX C - SHARE OWNERSHIP](#x19x4) | C- [1](#x19x4) |
| [APPENDIX D - PORTFOLIO MANAGER(S)](#x20x4) | D- [1](#x20x4) |
| [APPENDIX E - PROXY VOTING POLICIES AND PROCEDURES](#x21x4) | E- [1](#x21x4) |
| [APPENDIX F - CERTAIN SERVICE PROVIDER COMPENSATION](#x22x4) | F- [1](#x22x4) |
| [APPENDIX G - FINANCIAL INTERMEDIARY COMPENSATION](#x23x4) | G- [1](#x23x4) |
| [APPENDIX H - INVESTMENT STRATEGIES AND RISKS](#x24x4) | H- [1](#x24x4) |
| [APPENDIX I -- INVESTMENT RESTRICTIONS](#x25x4) | I- [1](#x25x4) |
| [APPENDIX J -- PORTFOLIO TRANSACTIONS AND BROKERAGE COMMISSIONS](#x26x4) | J- [1](#x26x4) |
| [APPENDIX K -- RECIPIENTS OF NON-PUBLIC PORTFOLIO HOLDINGS ON AN ONGOING BASIS](#x27x4) | K- [1](#x27x4) |
| [APPENDIX L -- DESCRIPTION OF RATINGS](#x28x4) | L- [1](#x28x4) |
| [APPENDIX M -- INCOME AND FEES RELATED TO SECURITIES <br>LENDING ACTIVITIES](#x29x4) | M- [1](#x29x4) |
| [APPENDIX N – INDEX PROVIDER INFORMATION](#x30x4) | N- [1](#x30x4) |

---

------

#### DEFINITIONS
"1940 Act" – the Investment Company Act of 1940 and the rules and regulations thereunder, as amended from time to time, and as such Act, rules or regulations are interpreted by the SEC.

"Board" – the Board of Trustees of the Trust.

"Financial intermediary" – includes any broker, dealer, bank (including bank trust departments), registered investment adviser, financial planner, retirement plan administrator, third-party administrator, insurance company and any other institution having a selling, administration or other similar agreement with MFD, MFS, or any of their affiliates.

"Fund" – references to "a Fund" or "the Fund" mean each Fund listed on the cover page, unless otherwise noted.

"Independent Trustees" – trustees who are not "interested persons" (as defined in the 1940 Act) of the Fund.

"Majority Shareholder Vote" – as defined currently in the 1940 Act to be the lesser of (i) 67% or more of the voting securities present at a meeting at which holders of voting securities representing more than 50% of the outstanding voting securities are present or represented by proxy, or (ii) more than 50% of the outstanding voting securities.

"MFD" or the "Distributor" – MFS Fund Distributors, Inc., a Delaware corporation.

"MFS" – Massachusetts Financial Services Company, a Delaware corporation.

"MFS Fund" – a fund managed by MFS and overseen by the Board.

"MFS Funds" – collectively, the funds managed by MFS and overseen by the Board.

"Prospectus" – the Prospectus of the Fund, dated May 19, 2026, for each of MFS Active International Value ETF and MFS Blended Research Small-Mid Cap ETF; dated December 10, 2025 (As Amended March 5, 2026), for MFS Blended Research Emerging Markets Equity ETF; dated September 30, 2025, for MFS Blended Research Core Equity ETF and MFS Blended Research International Equity ETF; dated August 26, 2025, for MFS Active Mid Cap ETF; and dated June 27, 2025, for all other Funds, as may be amended or supplemented from time to time.

"SEC" – U.S. Securities and Exchange Commission.

"Trust" – references to a "Trust" mean the Massachusetts business trust of which the Fund is a series, or, if the Fund is itself a Massachusetts business trust, references to a "Trust" shall mean the Fund.

#### MANAGEMENT OF THE FUND

#### Organization of the Fund
MFS Active Core Plus Bond ETF, MFS Active Growth ETF, MFS Active International ETF, MFS Active International Value ETF, MFS Active Intermediate Muni Bond ETF, MFS Active Mid Cap ETF, MFS Active Value ETF, MFS Blended Research Core Equity ETF, MFS Blended Research Emerging Markets Equity ETF, MFS Blended Research International Equity ETF, and MFS Blended Research Small-Mid Cap ETF, each an open-end investment company, are series of MFS Active Exchange Traded Funds Trust, a Massachusetts business trust organized in 2024. MFS Active Growth ETF is a non-diversified fund. MFS Active Core Plus Bond ETF, MFS Active Intermediate Muni Bond ETF, MFS Active International ETF, MFS Active International Value ETF, MFS Active Mid Cap ETF, MFS Active Value ETF, MFS Blended Research Core Equity ETF, MFS Blended Research Emerging Markets Equity ETF, MFS Blended Research International Equity ETF, and MFS Blended Research Small-Mid Cap ETF are diversified funds.

The Fund is an exchange-traded fund (ETF) that discloses portfolio holdings daily. The Fund offers, issues and sells shares at their net asset value per share (NAV) only in aggregations of a specified number of shares (Creation Units). Creation Units are generally issued in exchange for portfolio securities (Deposit Securities) and/or an amount of cash. Shares are listed and traded on an exchange. Shares trade in the secondary market at market prices that may differ from the shares' NAV. Shares are not individually redeemable, but are redeemable only in Creation Unit aggregations, also in exchange for portfolio securities (Redemption Securities and collectively with Deposit Securities, Creation Basket) and/or an amount of cash.

Only members or participants of a clearing agency registered with the SEC that have a written agreement with a Fund or one of its service providers (Authorized Participants), may purchase and redeem Creation Units. A Fund may charge purchase/redemption transaction fees for each purchase and redemption. In all cases, redemption transaction fees will be limited in accordance with the requirements of the SEC applicable to management investment companies offering redeemable securities. The Fund also reserves the right to permit or require that purchase and redemptions of shares are effected fully or partially in cash or a substitution of Deposit Securities in lieu of cash. Shares may be issued in advance of receipt of Deposit Securities, subject to various conditions, including a requirement that the Authorized Participant maintain a cash deposit equal to at least 105% and up to 115% of the market value of the undelivered Deposit Securities, which percentage MFS may change from time to time, of the market value of the omitted Deposit Securities. The Fund may use such cash deposit at any time to purchase Deposit Securities. See the Purchase and Redemption of Creation Units section below.

#### Trustees/Officers
Board Leadership Structure and Oversight — The following provides an overview of the leadership structure of the Board and the Board's oversight of the MFS Funds' risk management process. As of the date of this SAI, the Board consists of 11 Trustees, 10 of whom are Independent Trustees. An Independent Trustee serves as Chair of the Board. Taking into account the number, the diversity and the complexity of the MFS Funds overseen by the Board and the aggregate amount of assets under management in the MFS Funds, the Board has determined that the efficient conduct of its affairs makes it desirable to delegate responsibility for certain specific matters to Committees of the Board. Each of the seven standing Committees of the Board, to which the Board has delegated certain authority and oversight responsibilities, consists exclusively of Independent Trustees. In connection with each of the Board's regular meetings, the Independent Trustees meet separately from MFS with their counsel. The Independent Trustees also meet regularly with the MFS Funds' Chief

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Compliance Officer (who is also MFS' Chief Compliance Officer) to receive reports regarding the compliance of the MFS Funds with the federal securities laws and the MFS Funds' compliance policies and procedures. The Board reviews its leadership structure periodically and believes that its structure is appropriate to enable the Board to exercise its oversight of the MFS Funds.

Each MFS Fund has retained MFS as its investment adviser and administrator. MFS provides each MFS Fund with investment advisory services, and is responsible for day-to-day administration of each MFS Fund and management of the risks that arise from each MFS Fund's investments and operations. Certain employees of MFS serve as each MFS Fund's officers, including each MFS Fund's principal executive officer and principal financial and accounting officer. The Board provides oversight of the services provided by MFS and its affiliates, including the risk management activities of MFS and its affiliates (including those related to cybersecurity). In addition, each Committee of the Board provides oversight of its risk management activities with respect to the particular activities within the Committee's purview. In the course of providing oversight, the Board and the Committees receive a wide range of reports on each MFS Fund's activities, including reports on each MFS Fund's investment portfolio, the compliance of each MFS Fund with applicable laws, and each MFS Fund's financial accounting and reporting. The Board also meets periodically with the portfolio managers of each MFS Fund to receive reports regarding the management of each MFS Fund, including its investment risks. The Board and the relevant Committees meet periodically with MFS' Global Head of Enterprise Risk to receive reports on MFS' and its affiliates' risk management activities, including their efforts to (i) identify key risks that could adversely affect the MFS Funds or MFS; (ii) implement processes and controls to mitigate such key risks; and (iii) monitor business and market conditions in order to facilitate the processes described in (i) and (ii) above. In addition, the Board and the relevant Committees oversee risk management activities related to the key risks associated with services provided by various non-affiliated service providers through the receipt of reports prepared by MFS, and, in certain circumstances, through the receipt of reports directly from service providers, such as in the case of each MFS Fund's auditor and custodian. As the Fund's operations are carried out by service providers, the Board's oversight of the risk management processes of the service providers, including processes to address cybersecurity and other operational failures, is inherently limited.

**Trustees and Officers -- Identification and Background — The identification and background of the Trustees and Officers of the Trust, as well as an overview of the considerations that led the Board to conclude that each individual serving as a Trustee of the Fund should so serve, are set forth in APPENDIX A.**

Trustee Compensation and Committees — Compensation paid to the Independent Trustees for certain specified periods, as well as information regarding Committees of the Board, is set forth in APPENDIX B.

#### Share Ownership
Information concerning the ownership of Fund shares (i) by Trustees and officers of the Trust as a group, as well as the dollar value range of each Trustee's share ownership in the Fund and, on an aggregate basis, in the MFS Funds, (ii) by investors who are deemed to "control" the Fund, if any, and (iii) by investors who own 5% or more of any class of Fund shares (if no classes, of the Fund), if any, is set forth in APPENDIX C.

#### Portfolio Manager(s)
Information regarding other accounts managed, compensation, ownership of Fund shares, and possible conflicts of interest of the Fund's portfolio manager(s), is set forth in APPENDIX D.

#### Contractual Arrangements
The Fund has entered into contractual arrangements with an investment adviser, distributor, shareholder servicing agent, and custodian, among others, who each provide services to the Fund. Unless expressly stated otherwise, shareholders of the Fund are not parties to, or intended beneficiaries of, these contractual arrangements, and these contractual arrangements are not intended to create any shareholder right to enforce them against the service providers or to seek any remedy under them against the service providers, either directly or on behalf of the Fund, other than any rights conferred by federal or state securities laws that may not be waived.

#### Investment Adviser
MFS provides the Fund with investment advisory services. MFS and its predecessor organizations have a history of money management dating from 1924. MFS is a subsidiary of Sun Life of Canada (U.S.) Financial Services Holdings, Inc., which in turn is an indirect majority-owned subsidiary of Sun Life Financial Inc. (a diversified financial services company).

In rendering investment advisory services to the Fund, MFS may use the resources of one or more foreign (non-U.S.) affiliates of MFS that are not registered under the Investment Advisers Act of 1940, as amended (the Advisers Act) (the MFS Non-U.S. Advisory Affiliates) to provide portfolio management, research and/or trading services to the Fund. Under a Memorandum of Understanding (the MOU), each of the MFS Non-U.S. Advisory Affiliates are "Participating Affiliates" of MFS as that term is used in relief granted by the staff of the SEC allowing U.S. registered investment advisers to use investment advisory and trading resources of advisory affiliates not registered under the Advisers Act subject to the supervision of the U.S. registered adviser. Any employees of the Participating Affiliates who provide services to the Fund are considered under the MOU to be "associated persons" of MFS as that term is defined in the Advisers Act and are subject to the supervision of MFS.

MFS generally uses an active bottom-up investment approach to buying and selling investments for the Fund. For the Fund, investments are typically selected primarily based on fundamental analysis or, where specified in the Fund's Prospectus, a blend of fundamental and quantitative research. Fundamental analysis takes into account an issuer's financial condition and market, economic, political, and regulatory conditions. MFS may consider environmental, social, and governance (ESG) factors in its fundamental investment analysis and security selection process alongside more traditional economic factors where MFS believes such ESG factors could materially impact the economic value of an issuer. MFS believes that certain ESG factors could materially impact the value of an issuer by representing a source of economic opportunity that contributes to an issuer's growth and outperformance relative to its peer group or a source of risk that may result in a condition or the occurrence of an event that could have a material negative impact on an issuer's value. MFS' consideration of the impact of ESG factors on the value of an issuer often involves a long-term investment horizon, and the impact of such ESG factors may not be realized in the short term. Examples of potentially material ESG opportunities and risks may include, but are not limited to, physical and transitional

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impacts related to climate change, resource depletion, shifting market or consumer preferences or demand, an issuer's governance structure and practices, data protection and privacy issues, diversity and labor practices, and regulatory and reputational risks. In conducting analysis of ESG factors, MFS' investment professionals may use a variety of tools, including, but not limited to, (i) proprietary issuer and industry research, (ii) internally developed analytical tools designed to evaluate issuer performance and risk-exposure, and (iii) third-party generated issuer and industry research and ratings.

MFS investment and proxy voting professionals may also incorporate ESG factors when engaging with an issuer's management team, board of directors, or other representatives in order (i) to better understand the risks and opportunities that a particular ESG issue may present for an issuer; (ii) to communicate MFS' views with respect to a financially material ESG issue; or (iii) to inform proxy voting decisions. MFS does not engage for the purpose of trying to change or influence control of a company. Such engagement activities will not necessarily result in any changes to an issuer's ESG-related practices. The extent to which an investment professional considers ESG factors in conducting fundamental investment analysis and the extent to which ESG factors impact a Fund's return will depend on a number of variables, such as a Fund's investment strategy, the types of asset classes held in a Fund, a Fund's regional and geographic exposures, and an investment professional's assessment and analysis of a specific ESG issue. Each investment professional makes their own decisions with respect to which ESG factors to consider and how much consideration, if any, to give to ESG factors in the security analysis and investment selection process. The extent that MFS' integration of ESG factors into its investment process impacts the investment performance of a Fund may be difficult to quantify and can vary significantly over time. In addition, ESG-related information generated by third-party data providers may be inaccurate, incomplete, inconsistent, and out-of-date, which may adversely impact an investment professional's analysis of the ESG factors relevant to an issuer.

MFS may also participate in organizations, initiatives, or other collaborative industry efforts to enhance MFS' knowledge of specific ESG issues or to support ESG-related initiatives that MFS believes may have a material impact on its investment decisions. MFS may also engage regarding financially material ESG topics with other organizations, such as the Financial Accounting Standards Board, the International Accounting Standards Board, and the Global Reporting Initiative. The requirements for participation in these organizations and initiatives vary, and certain organizations, initiatives and efforts require a commitment from MFS to adopt a framework for achieving the aims of such organization or initiative. MFS' participation in any organization or initiative is subject to its fiduciary responsibilities to the Fund, and therefore MFS may fail to act or may take actions that are inconsistent with the purpose, goals or aspirations of these organizations or initiatives if, in MFS' judgment, it is in the best economic interests of the Fund to do so.

MFS votes proxies on behalf of the Fund pursuant to the proxy voting policies and procedures set forth in APPENDIX E. Information regarding how the Fund voted proxies relating to portfolio securities during the 12-month period ended June 30 is available by August 31 of each year without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting and selecting the Fund's name, or by visiting the SEC's website at http://www.sec.gov.

In addition to the conflicts of interest discussed elsewhere in this SAI, MFS has other conflicts of interest related to its service as investment adviser to the Fund and other funds and accounts (collectively, accounts), its other business activities, and its employees. In order to minimize conflicts of interest, all employees of MFS are subject to policies and/or procedures regarding conflicts of interest, appropriate business conduct, confidential and proprietary information, information barriers, private investments, personal trading, insider trading, gifts and entertainment, political and charitable contributions, outside business activities, vendor management, and other topics. These policies and procedures are intended to identify and mitigate conflicts of interest with or among clients, MFS employees, and business partners, and to resolve appropriately any such conflicts of interest that may occur. There is no guarantee that MFS will be successful in identifying or mitigating conflicts of interest.

MFS advises multiple accounts (including accounts in which MFS, an affiliate, an employee, an officer, or a director has an interest). Investment and voting decisions made for one or more accounts may compete with, differ from, conflict with, or involve different timing from investment and voting decisions made for the Fund. MFS' acting as investment adviser to multiple accounts could have a detrimental effect on the price, terms, or availability of a security with respect to the Fund. In certain instances, there are securities that are suitable for the Fund as well as for one or more other accounts advised by MFS or any subsidiary of MFS (including accounts in which MFS, an affiliate, an employee, an officer, or a director has an interest) or that MFS believes should no longer be held by the Fund or by such other accounts. It is possible that a particular security is bought or sold for only one account even though it might be held by, or bought or sold for, other accounts. Some simultaneous transactions are inevitable when several accounts receive investment advice from the same investment adviser, particularly when the same security is suitable for the investment objectives of more than one account. The simultaneous management of multiple accounts creates conflicts of interest, including, but not limited to, circumstances where MFS, an affiliate, an employee, an officer, or a director has an interest in one or more accounts, where one or more accounts pays higher asset-based fees or performance-based fees, or where the availability or liquidity of investment opportunities is limited. MFS also has other incentives to favor different clients or accounts, including, but not limited to, a client with greater overall assets under management or the potential for greater assets under management, accounts invested in investment strategies that are of particular focus for MFS for distribution purposes, accounts believed to be at risk of termination, accounts associated with a particular consultant or financial intermediary whose business MFS wants to retain or from whom MFS wants to win additional business, or clients in a particular region or industry in which MFS would like to grow its business. This creates the potential for MFS to favor one account over another. MFS may favor an account by allocating to it greater time and attention, superior investment opportunities or access to limited availability investment opportunities. MFS has adopted policies and procedures reasonably designed to ensure that it does not favor one account over another; however, this does not mean all accounts will be treated identically.

MFS has adopted policies that it believes are reasonably designed to ensure that when two or more accounts (including accounts in which MFS, an affiliate, an employee, an officer, or a director has an interest) are simultaneously engaged in the purchase or sale of the same security, the securities are allocated among accounts in a manner believed by MFS to be fair and equitable to each account over time. Allocations may be based on many factors and may not always be pro rata based on assets managed. The allocation methodology could have a detrimental effect on the price or availability of a security with respect to the Fund.

When executing orders, MFS may aggregate multiple orders for the same instrument into a single trade as long as aggregation is unlikely to work to the overall disadvantage of any participating account over time. MFS does not generally aggregate orders for related accounts (which include certain accounts that are managed by MFS for the sole benefit of itself or its subsidiaries as well as any trade error account) with orders for other client accounts, and will trade for such related accounts in a manner that it believes will not disadvantage other client

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If MFS executes purchase and sale transactions between the Fund and other accounts managed by MFS or its affiliates (cross-trades), MFS may have an incentive to favor one account over another by exchanging securities at a price that is advantageous to the favored account, or selling less liquid securities from the favored account to another account. Cross-trade transactions entered into by the Fund are executed in accordance with applicable rules and regulations under the 1940 Act and related policies approved by the Board. To the extent permitted by applicable law, certain MFS Funds may invest their assets in other funds advised by MFS, including funds that are advised by one or more of the same portfolio manager(s), which could result in conflicts of interest relating to asset allocation, timing of fund purchases and redemptions, and increased profitability for MFS and/or its personnel, including portfolio managers.

**Investment Management Agreement –** MFS manages the Fund pursuant to an Investment Management Agreement (the "Management Agreement"). Under the Management Agreement, MFS is responsible for managing the Fund's investments, executing transactions, and providing related administrative services (including certain financial, legal, and other administrative services) and facilities. Subject to such policies as the Trustees may determine, MFS makes investment decisions for the Fund. For these services, MFS receives an investment management fee, computed and paid monthly, as follows:

The management fee set forth in the Investment Management Agreement is computed daily and paid monthly at the following annual rate of the Fund's average daily net assets:

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| | |
|:---|:---|
|  | **Investment Management Fee** |
| MFS Active Core Plus Bond ETF | 0.34% |
| MFS Active Growth ETF | 0.49% |
| MFS Active Intermediate Muni Bond ETF | 0.34% |
| MFS Active International ETF | 0.59% |
| MFS Active International Value ETF | 0.57% |
| MFS Active Mid Cap ETF | 0.59% |
| MFS Active Value ETF | 0.44% |
| MFS Blended Research Core Equity ETF | 0.24% |
| MFS Blended Research Emerging Markets Equity ETF | 0.44% |
| MFS Blended Research International Equity ETF | 0.34% |
| MFS Blended Research Small-Mid Cap ETF | 0.38% |

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The management fee includes investment management services and ordinary, recurring operating expenses, except for certain expenses. The following expenses are excluded from the all-inclusive management fee: (i) interest expense or other costs of the Fund's borrowing(s) or financing activities; (ii) taxes (including, but not limited to, income, excise, transfer and withholding taxes, including any accrued deferred tax liability) and governmental fees levied against the Fund; (iii) costs of any litigation such as any indemnification obligation, attorneys' fees, expenses, costs, judgments, amounts paid in settlement, fines, penalties, fees of expert witnesses, document production fees, and all other liabilities incurred or paid by the Fund or a person indemnified by a Fund; (iv) costs associated with any tax reclaims or similar actions, including any fees paid on a contingent basis; (v) brokerage fees and commissions and other investment-related transaction costs incurred by or for the Fund; (vi) expenses of a Fund's securities lending, if any, including any securities lending agent fees, as governed by a separate securities lending agreement; (vii) expenses incident to meetings of Fund shareholders and the associated preparation, filing, printing and mailing of related notices and proxy statements; (viii) expenses incurred in connection with the provision of distribution services under a plan adopted pursuant to Rule 12b-1 under the 1940 Act (if any); (ix) investment-related expenses (such as interest and borrowing expenses incurred in connection with the Fund's investment activity, and fees and expenses associated with investments in investment companies and other similar investment vehicles); (x) expenses of a Fund which are capitalized in accordance with generally accepted accounting principles; (xi) the fee paid to MFS pursuant to this Agreement; (xii) other nonrecurring or extraordinary expenses (as determined by a majority of the Trustees of the Trust who are not "interested persons" of the Trust); and (xiii) such other expenses as approved by a majority of the Trust's Board.

MFS pays the compensation of the Trust's officers and Trustees. MFS also furnishes at its own expense investment advisory and administrative services, office space, equipment, clerical personnel, investment advisory facilities, and executive and supervisory personnel necessary for managing the Fund's investments and effecting its portfolio transactions.

Expenses of the Trust which are not attributable to the Fund are allocated among the MFS Funds in the Trust in a manner believed by management of the Trust to be fair and equitable.

The Management Agreement has an initial two-year term and continues in effect thereafter only if such continuance is specifically approved at least annually by the Board or by Majority Shareholder Vote and, in either case, by a majority of the Independent Trustees. The Management Agreement terminates automatically if it is assigned and may be terminated without penalty by a Majority Shareholder Vote, or by either party, on not more than 60 days' nor less than 30 days' written notice. The Management Agreement may be approved, renewed, amended, or terminated as to one MFS fund in the Trust, even though the Management Agreement is not approved, renewed, amended, or terminated as to any other MFS fund in the Trust.

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The Management Agreement also provides that neither MFS nor its personnel shall be liable for any error of judgment or mistake of law or for any loss arising out of any investment or for any act or omission in the execution and management of the Fund, except for willful misfeasance, bad faith, gross negligence, or reckless disregard of its or their duties and obligations under the Management Agreement.

#### Administrator
MFS provides the Fund with certain financial, legal, and other administrative services pursuant to the Management Agreement. MFS bears the costs of the administrative services provided under the Management Agreement.

#### Transfer Agent
State Street Bank and Trust Company ("State Street"), with a place of business at One Congress Street, Boston, MA 02114, provides dividend and distribution disbursing and transfer agent and recordkeeping functions in connection with the issuance, transfer, and redemption of the Fund under a transfer agency and service agreement. State Street is also responsible for the order-taking function of the Fund's shares. MFS bears the costs of the services provided under the transfer agency agreement.

#### Distributor
MFD, a wholly-owned subsidiary of MFS, serves as distributor for the continuous offering of shares of the Fund pursuant to a Distribution Agreement. Under the Agreement, MFD agrees to use its best efforts to find purchasers for shares of the Fund.

#### Custodian
State Street, with a place of business at One Congress Street, Boston, MA 02114, serves as the custodian of the assets of the Fund. State Street is responsible for safekeeping cash and securities, handling the receipt and delivery of securities, collecting interest and dividends on investments, serving as the foreign custody manager, providing reports on foreign securities depositaries, maintaining books of original entry and other required books and accounts, and calculating the daily net asset value of Fund shares.

#### Certain Service Provider Compensation
Compensation paid by the Fund to certain of its service providers for advisory services and administrative services, for certain specified periods, is set forth in APPENDIX F.

#### Code of Ethics
The Fund, MFS, its subadvisor (if applicable), and MFD have adopted separate codes of ethics ("Codes of Ethics") as required under the 1940 Act. The Codes of Ethics contain provisions and requirements designed to identify and address certain conflicts of interest between personal investment activities of MFS employees and the interests of the Fund. Subject to certain conditions and restrictions, each code permits personnel subject to the code to invest in securities for their own accounts, including securities that may be purchased, held, or sold by the Fund.

#### EXCHANGE LISTING AND TRADING
A discussion of exchange listing and trading matters associated with an investment in the Fund is contained in the "Summary of Key Information - Purchase and Sale of Fund Shares" and "Additional Information About the Purchase and Sale of Fund Shares" sections of the Fund's Prospectus. The discussion below supplements, and should be read in conjunction with, those sections of the applicable Prospectus.

Shares of the MFS Active Core Plus Bond ETF, MFS Active Growth ETF, MFS Active Intermediate Muni Bond ETF, MFS Active International ETF, MFS Active Mid Cap ETF, MFS Active Value ETF, MFS Blended Research Core Equity ETF, MFS Blended Research Emerging Markets Equity ETF, and MFS Blended Research International Equity ETF are listed for trading on the New York Stock Exchange LLC ("NYSE" or an "Exchange") and shares of MFS Active International Value ETF and MFS Blended Research Small-Mid Cap ETF are listed for trading on the NYSE Arca, Inc. ("NYSE Arca" or an "Exchange"). With respect to a given Fund, references herein to "Exchange" mean NYSE or NYSE Arca, as the context may require.

Shares of the Fund are listed for trading, and trade throughout the day, on the applicable Exchange and in other secondary markets. Shares of the Fund may also be listed on certain non-U.S. exchanges although each Exchange is a U.S. Exchange. The Exchange may consider the suspension of trading in, and may initiate delisting proceedings of, the shares of a Fund under any of the following circumstances: (i) if the Exchange becomes aware that the Fund is no longer eligible to operate in reliance on Rule 6c-11 under the 1940 Act; (ii) if the Fund no longer complies with the applicable listing requirements set forth in the Exchange's rules; (iii) if, following the initial twelve-month period after commencement of trading on the Exchange of the Fund, there are fewer than 50 beneficial holders of the Fund; or (iv) if such other event shall occur or condition exists which, in the opinion of the Exchange, makes further dealings on the Exchange inadvisable. The Exchange will remove the shares from listing and trading upon termination of a Fund. There can be no assurance that the requirements of the Exchange necessary to maintain the listing of shares of any Fund will continue to be met.

As in the case of other publicly-traded securities, brokers' commissions on transactions will be based on negotiated commission rates at customary levels. The existence of a liquid trading market for certain securities may depend on whether dealers will make a market in such securities. There can be no assurance that such a market will be made or maintained for Fund shares or that any such market will be or remain liquid. The price at which securities may be sold and the value of the Fund's shares will be adversely affected if trading markets for the Fund's portfolio securities is limited or absent, or if bid/ask spreads are wide.

The Trust reserves the right to adjust the share prices of the Fund in the future to maintain convenient trading ranges for investors. Any adjustments would be accomplished through stock splits or reverse stock splits, which would have no effect on the net assets of the Fund or an investor's equity interest in the Fund.

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#### CONTINUOUS OFFERING
The method by which Creation Units of shares are created and traded may raise certain issues under applicable securities laws. Because new Creation Units of shares are issued and sold by a Fund on an ongoing basis, at any point a "distribution," as such term is used in the Securities Act of 1933, as amended (the "Securities Act"), may occur. Broker-dealers and other persons are cautioned that some activities on their part may, depending on the circumstances, result in their being deemed participants in a distribution in a manner which could render them statutory underwriters and subject them to the prospectus delivery and liability provisions of the Securities Act.

For example, a broker-dealer firm or its client may be deemed a statutory underwriter if it takes Creation Units after placing an order with the Fund, breaks them down into constituent shares, and sells such shares directly to customers, or if it chooses to couple the creation of a supply of new shares with an active selling effort involving solicitation of secondary market demand for shares. A determination of whether one is an underwriter for purposes of the Securities Act must take into account all the facts and circumstances pertaining to the activities of the broker-dealer or its client in the particular case, and the examples mentioned above should not be considered a complete description of all the activities that could lead to a categorization as an underwriter.

Broker-dealer firms should also note that dealers who are not "underwriters," but are effecting transactions in shares of a Fund, whether or not participating in the distribution of shares, are generally required to deliver a prospectus. This is because the prospectus delivery exemption in Section 4(a)(3) of the Securities Act is not available in respect of such transactions as a result of Section 24(d) of the 1940 Act. As a result, broker-dealer firms should note that dealers who are not underwriters but are participating in a distribution (as opposed to engaging in ordinary secondary market transactions) and thus dealing with the shares that are part of an overallotment within the meaning of Section 4(a)(3)(A) of the Securities Act would be unable to take advantage of the prospectus delivery exemption provided by Section 4(a)(3) of the Securities Act. Firms that incur a prospectus-delivery obligation with respect to shares of the Fund are reminded that, under Rule 153 under the Securities Act, a prospectus-delivery obligation under Section 5(b)(2) of the Securities Act owed to an exchange member in connection with a sale on an exchange is satisfied by the fact that the Prospectus is available from the exchange upon request. The prospectus delivery mechanism provided in Rule 153 is only available with respect to transactions on an exchange.

#### DISTRIBUTION PLAN
The Trustees have approved a plan for the Fund in accordance with Rule 12b-1 under the 1940 Act as described in the Fund's Prospectus (the "Distribution Plan"). However, no Rule 12b-1 Distribution Plan fees are currently charged to the Funds. In approving the Distribution Plan, the Trustees, including a majority of the Independent Trustees who have no direct or indirect financial interest in the operation of the Distribution Plan or any agreements relating to the Distribution Plan ("Distribution Plan Qualified Trustees"), concluded that there is a reasonable likelihood that the Distribution Plan would benefit the Fund.

The Distribution Plan is designed to promote sales of shares and reduce the amount of redemptions that might otherwise occur if the Distribution Plan were not in effect, as well as to compensate intermediaries for their servicing and maintenance of shareholder accounts. Increasing the Fund's net assets through sales of shares, or reducing reductions in net assets by reducing redemptions, may help reduce the Fund's expense ratio by spreading the Fund's fixed costs over a larger base and may reduce the potential adverse effect of selling the Fund's portfolio securities to meet redemptions. There is, however, no assurance that the net assets of the Fund will increase or not be reduced, or that other benefits will be realized as a result of the Distribution Plan.

The Distribution Plan remains in effect from year to year only if its continuance is specifically approved at least annually by vote of both the Trustees and a majority of the Distribution Plan Qualified Trustees. The Distribution Plan also requires that the Fund and MFD each provide the Trustees, and that the Trustees review, at least quarterly, a written report of the amounts expended (and purposes therefor) under the Distribution Plan. The Distribution Plan may be terminated at any time by vote of a majority of the Distribution Plan Qualified Trustees or by a Majority Shareholder Vote of the Fund. The Distribution Plan may not be amended to increase materially the amount of permitted distribution expenses without the approval of a majority of the Fund, or may not be materially amended in any case without a vote of the Trustees and a majority of the Distribution Plan Qualified Trustees.

The Distribution Plan is a compensation plan, meaning that MFD will receive payment without regard to the actual expenses it incurs under the Distribution Plan for distribution and shareholder services. The distribution and service fees paid to MFD equal on an annual basis up to the following maximum percentages of average daily net assets of the Fund:

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| | | | |
|:---|:---|:---|:---|
|  | **Maximum Distribution Fee** | **Maximum Service Fee** | **Maximum Total Distribution and Service Fee** |
| MFS Active Core Plus Bond ETF | 0.00% | 0.25% | 0.25% |
| MFS Active Growth ETF | 0.00% | 0.25% | 0.25% |
| MFS Active Intermediate Muni Bond ETF | 0.00% | 0.25% | 0.25% |
| MFS Active International ETF | 0.00% | 0.25% | 0.25% |
| MFS Active International Value ETF | 0.00% | 0.25% | 0.25% |
| MFS Active Mid Cap ETF | 0.00% | 0.25% | 0.25% |
| MFS Active Value ETF | 0.00% | 0.25% | 0.25% |
| MFS Blended Research Core Equity ETF | 0.00% | 0.25% | 0.25% |
| MFS Blended Research Emerging Markets Equity ETF | 0.00% | 0.25% | 0.25% |
| MFS Blended Research International Equity ETF | 0.00% | 0.25% | 0.25% |
| MFS Blended Research Small-Mid Cap ETF | 0.00% | 0.25% | 0.25% |

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The Board has determined not to implement payments under the Distribution Plan at this time.

In certain circumstances, the fees described above may be wholly or partially waived, or do not apply to certain MFS Funds. The distribution fee may be waived from time to time pursuant to Rule 2341 of the Financial Industry Regulatory Authority ("FINRA").

#### Service Fees
The Distribution Plan provides that the Fund pays MFD a service fee as described above based on the average daily net assets of the Fund annually. MFD may, at its discretion, retain all or a portion of such payments or pay all or a portion of such payments to financial intermediaries. Service fees compensate MFD and/or financial intermediaries for shareholder servicing and account maintenance activities, including shareholder recordkeeping (including assisting in establishing and maintaining customer accounts and records), transaction processing (including assisting with purchase, redemption and exchange requests), shareholder reporting, arranging for bank wires, monitoring dividend payments from the Fund on behalf of customers, forwarding certain shareholder communications from the Fund to customers, corresponding with shareholders and customers regarding the Fund (including receiving and responding to inquiries and answering questions regarding the Fund), and aiding in maintaining the investment of their respective customers in the Fund. Financial intermediaries may from time to time be required to meet certain criteria established by MFD in order to receive service fees.

### Distribution Fees
The Distribution Plan provides that the Fund pays MFD a distribution fee as described above based on the average daily net assets of the Fund as partial consideration for distribution services performed and expenses incurred in the performance of MFD's obligations under its distribution agreement with the Fund. Distribution fees compensate MFD and/or financial intermediaries for their expenses in connection with the distribution of Fund shares, including commissions to financial intermediaries, printing prospectuses and reports used for sales purposes, the preparation and printing of sales literature, personnel, travel, office expense and equipment, payments made to wholesalers employed by MFD (employees may receive additional compensation if they meet certain targets for sales of the Fund), and other distribution-related expenses. While the amount of compensation received by MFD in the form of distribution fees during any year may be more or less than the expenses incurred by MFD under its distribution agreement with the Fund, the Fund is not liable to MFD for any losses MFD may incur in performing services under its Distribution Agreement with the Fund.

#### Distribution and Service Fees Paid to MFD
The Board has determined not to implement payments under the Distribution Plan at this time.

#### FINANCIAL INTERMEDIARY COMPENSATION
MFD and/or its affiliates may make payments to financial intermediaries that sell Fund shares as described in APPENDIX G.

#### INVESTMENT STRATEGIES, RISKS AND RESTRICTIONS
Set forth in APPENDIX H is a description of investment strategies which the Fund may generally use in pursuing its investment objective(s) and investment policies to the extent such strategies are consistent with its investment objective and investment policies, and a description of the risks associated with these investment strategies. Set forth in APPENDIX I is a description of investment restrictions to which the Fund is subject.

#### NET INCOME AND DISTRIBUTIONS
The Fund intends to distribute to its shareholders all or substantially all of its net investment income. The net investment income of the Fund consists of non-capital gain income less expenses. In addition, the Fund intends to distribute net realized short- and long-term capital gains, if any, at least annually. Shareholders will be informed of the tax consequences of such distributions, including whether any portion represents a return of capital, after the end of each calendar year.

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#### TAX CONSIDERATIONS
The following discussion is a brief summary of some of the important U.S. federal (and, where noted, state) income tax consequences affecting the Fund and its shareholders. The discussion is very general, and therefore prospective investors are urged to consult their tax advisers about the impact an investment in the Fund may have on their own tax situations.

#### Tax Treatment of the Fund
U.S. Federal Taxes — The Fund (even if it is a Fund in a Trust with multiple series) is treated as a separate entity for U.S. federal income tax purposes under the Internal Revenue Code of 1986, as amended (the "Code"). The Fund has elected (or in the case of a new Fund, intends to elect) to be, and intends to qualify to be treated each year as, a "regulated investment company" under Subchapter M of the Code.

In order to qualify for the special tax treatment accorded regulated investment companies and their shareholders, the Fund must, among other things:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) derive at least 90% of its gross income for each taxable year from (i) dividends, interest, payments with respect to certain securities loans, and gains from the sale or other disposition of stock, securities or foreign currencies, or other income (including gains from options, futures, or forward contracts) derived with respect to its business of investing in such stock, securities, or currencies and (ii) net income derived from interests in "qualified publicly traded partnerships" (as defined below);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) diversify its holdings so that, at the end of each quarter of the Fund's taxable year, (i) at least 50% of the market value of the Fund's total assets is represented by cash and cash items, U.S. Government securities, securities of other regulated investment companies, and other securities limited in respect of any one issuer to a value not greater than 5% of the value of the Fund's total assets and not more than 10% of the outstanding voting securities of such issuer, and (ii) not more than 25% of the value of the Fund's total assets is invested, including through corporations in which the Fund owns a 20% or more voting stock interest, (x) in the securities (other than those of the U.S. Government or other regulated investment companies) of any one issuer or of two or more issuers that the Fund controls and that are engaged in the same, similar, or related trades or businesses, or (y) in the securities of one or more qualified publicly traded partnerships (as defined below); and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) distribute with respect to each taxable year at least 90% of the sum of its investment company taxable income (as that term is defined in the Code without regard to the deduction for dividends paid; generally, taxable ordinary income and the excess, if any, of the net short-term capital gains over net long-term capital losses) and net tax-exempt income, for such year.

In general, for purposes of the 90% gross income requirement described in paragraph (a) above, income derived from a partnership will be treated as qualifying income only to the extent such income is attributable to items of income of the partnership which would be qualifying income if realized directly by the regulated investment company. However, 100% of the net income derived from an interest in a ''qualified publicly traded partnership'' (a partnership (i) the interests in which are traded on an established securities market or are readily tradable on a secondary market or the substantial equivalent thereof, and (ii) that derives less than 90% of its income from the qualifying income described in paragraph (a)(i) above) will be treated as qualifying income. In general, qualified publicly traded partnerships will be treated as partnerships for U.S. federal income tax purposes because they meet the passive income requirement under Section 7704(c)(2) of the Code. In addition, although in general the passive loss rules of the Code do not apply to regulated investment companies, such rules do apply to a regulated investment company with respect to items attributable to an interest in a qualified publicly traded partnership.

For purposes of the diversification test in (b) above, identification of the issuer (or issuers) of a particular Fund investment can depend on the terms and conditions of that investment. In some cases, such identification may be uncertain under current law, and future Internal Revenue Service ("IRS") guidance or an adverse determination by the IRS regarding issuer identification for a particular type of investment may adversely affect the Fund's ability to meet the diversification test. In the case of the Fund's investment in loan participations, the Fund will treat both the entity from whom the loan participation is acquired and the borrower as an issuer for the purposes of meeting the diversification requirement described in paragraph (b) above. Finally, for purposes of this diversification requirement, the term "outstanding voting securities of such issuer" will include the equity securities of a qualified publicly traded partnership.

As a regulated investment company, the Fund will not be subject to U.S. federal income or excise taxes on its net investment income and net realized capital gains that it distributes to shareholders in accordance with the timing requirements imposed by the Code. The Fund's foreign-source income, gains, or proceeds, if any, may be subject to foreign withholding or other taxes, which could decrease the Fund's return on the underlying investments. Shareholders of the Fund should review "Taxation of Shareholders" below for further information regarding the tax implications of their investment in the Fund.

If the Fund were to fail to meet the income, diversification or distribution test described above, the Fund could in some cases cure such failure, including by paying a fund-level tax, paying interest, making additional distributions or disposing of certain assets. If the Fund were ineligible to or otherwise did not cure such failure for any year, or were otherwise to fail to qualify as a "regulated investment company" accorded special tax treatment for such year, the Fund would be subject to U.S. federal income tax on all of its taxable income at corporate rates, and Fund distributions from earnings and profits, including any distributions of net tax-exempt income and net long-term capital gains, would generally be taxable as ordinary income to the shareholders. Some portions of such distributions may be eligible for the dividends received deduction in the case of corporate shareholders and may be eligible to be treated as "qualified dividend income" in the case of shareholders taxed as individuals, provided, in both cases, the shareholder meets certain holding period and other requirements in respect of the Fund's shares (as described below). In addition, the Fund could be required to recognize unrealized gains, pay substantial taxes and interest and make substantial distributions before re-qualifying as a regulated investment company that is accorded special tax treatment.

The Fund intends to distribute at least annually to its shareholders all or substantially all of its investment company taxable income (computed without regard to the dividends-paid deduction), its net tax-exempt income (if any) and its net capital gain (that is, the excess of net long-term capital gain over net short-term capital loss, in each case determined with reference to any loss carryforwards) (if any). Any taxable income, including any net capital gain, retained by the Fund will generally be subject to tax at the Fund level at regular corporate rates.

If the Fund fails to distribute in a calendar year substantially all (at least 98%) of its ordinary income for such year and substantially all (at least 98.2%) of its capital gain net income for the one-year period ending October 31 (or November 30 or December 31 if the Fund is permitted to elect and so elects), plus any retained amount from the prior year, the Fund will be subject to a non-deductible 4% excise tax on

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the undistributed amounts. For purposes of the required excise tax distribution, ordinary gains and losses from the sale, exchange or other taxable disposition of property that would be taken into account after October 31 (or November 30 or December 31 if the Fund is permitted to elect and so elects) are treated as arising on January 1 of the following calendar year; in the case of a Fund that is permitted to make and makes the election to use December 31 as described above, there will be no gains or losses eligible to be so treated. Also, for purposes of the excise tax, the Fund will be treated as having distributed any amount on which it is subject to corporate income tax for the taxable year ending within the calendar year. A dividend paid to shareholders by the Fund in January generally is deemed to have been paid by the Fund on December 31 of the preceding year, if the dividend was declared and payable to shareholders of record on a date in October, November, or December of that preceding year. The Fund intends generally to make distributions sufficient to avoid imposition of the 4% excise tax, although there can be no assurance that it will be able to do so.

Capital losses in excess of capital gains ("net capital losses") are not permitted to be deducted against the Fund's net investment income. Instead, subject to certain limitations, the Fund may carry forward a net capital loss from any taxable year to offset capital gains, if any, realized during a subsequent taxable year without expiration; any such carryforward losses will retain their character as short-term or long-term. The Fund must apply such carryforwards first against gains of the same character. Capital loss carryforwards are reduced to the extent they offset current year net realized capital gains, whether the Fund retains or distributes such gains. See the Fund's most recent annual shareholder report for the Fund's available capital loss carryforwards as of the end of its most recently ended fiscal year.

In determining its net capital gain, including in connection with determining the amount available to support a Capital Gain Dividend (defined below), its taxable income and its earnings and profits, a regulated investment company may elect to treat any post-October capital loss (defined as any net capital loss, attributable to the portion, if any, of the taxable year after October 31 or, if there is no such loss, the net long-term capital loss or net short-term capital loss attributable to such portion of the taxable year) or late-year ordinary loss (generally, the sum of its (i) net ordinary losses, if any, from the sale, exchange or other taxable disposition of property attributable to the portion, if any, of the taxable year after October 31, and its (ii) other net ordinary losses, if any, attributable to the portion of the taxable year after December 31) as if incurred in the succeeding taxable year.

Massachusetts Taxes — As long as it qualifies as a regulated investment company under the Code, the Fund will not be required to pay Massachusetts income or excise taxes.

#### Taxation of Shareholders
Tax Treatment of Distributions — Subject to the special rules discussed below for Municipal Funds (as defined below), shareholders of the Fund generally will have to pay U.S. federal income tax and any applicable non-U.S., state or local income taxes on the dividends and "Capital Gain Dividends" (as defined below) they receive from the Fund. Except as described below, any distributions from ordinary income or from net short-term capital gains are taxable to shareholders as ordinary income for U.S. federal income tax purposes whether paid in cash or reinvested in additional shares of the Fund.

Qualified dividend income received by an individual will be taxed at the reduced rates applicable to net capital gains, provided holding period and other requirements are met. For some portion of the Fund's dividends to be qualified dividend income, the Fund must meet holding period and other requirements with respect to some portion of the dividend-paying stocks in its portfolio and the Fund's shareholder must meet holding period and other requirements with respect to the Fund's shares. In general, a dividend will not be treated as qualified dividend income (at either the Fund or shareholder level) (i) if the dividend is received with respect to any share of stock held for fewer than 61 days during the 121-day period beginning on the date which is 60 days before the date on which such share becomes ex-dividend with respect to such dividend (or, in the case of certain preferred stock, 91 days during the 181-day period beginning 90 days before such date), (ii) to the extent that the recipient is under an obligation (whether pursuant to a short sale or otherwise) to make related payments with respect to positions in substantially similar or related property, (iii) if the recipient elects to have the dividend income treated as investment income for purposes of the limitation on deductibility of investment interest, or (iv) if the dividend is received from a non-U.S. corporation that is (a) not eligible for the benefits of a comprehensive income tax treaty with the United States (with the exception of dividends paid on stock of such a non-U.S. corporation readily tradable on an established securities market in the United States) or (b) treated as a passive foreign investment company. Payments in lieu of dividends, such as payments pursuant to securities lending arrangements, also do not qualify to be treated as qualified dividend income.

In general, a distribution of investment income reported by the Fund as derived from qualified dividend income will be treated as qualified dividend income by a shareholder taxed as an individual, provided the shareholder meets the holding period and other requirements described above with respect to the Fund's shares. If the qualified dividend income received by the Fund during any taxable year is 95% or more of its gross income for that taxable year, then 100% of the Fund's dividends (other than Capital Gain Dividends), will be eligible to be treated as qualified dividend income. For this purpose, in the case of a sale or other disposition by the Fund of stock or securities, the only gain included in the term "gross income" is the excess of net short-term capital gain from such sales or dispositions over the net long-term capital loss from such sales or dispositions.

Distributions of net capital gain properly reported by the Fund as capital gain dividends ("Capital Gain Dividends"), whether paid in cash or reinvested in additional shares of the Fund, are taxable to shareholders for U.S. federal income tax purposes as long-term capital gains includible in net capital gain and taxed to individuals at reduced rates, without regard to the length of time the shareholders have held their shares of the Fund.

The IRS and the U.S. Treasury Department have issued regulations that impose special rules in respect of Capital Gain Dividends received through partnership interests constituting "applicable partnership interests" under Section 1061 of the Code.

Under U.S. Treasury Department regulations, distributions by the Fund to its shareholders that the Fund properly reports as "Section 199A dividends," as defined and subject to certain conditions described below, are treated as qualified real estate investment trust (REIT) dividends in the hands of non-corporate shareholders. Non-corporate shareholders are permitted a U.S. federal income tax deduction equal to 20% of qualified REIT dividends received by them, subject to certain limitations. With the recent passage of the Big Beautiful Bill, the deduction is now permanent at 20%. Very generally, a "Section 199A dividend" is any dividend or portion thereof that is attributable to certain dividends received by the regulated investment company from REITs, to the extent such dividends are properly reported as such by the regulated investment company in a written notice to its shareholders. A Section 199A dividend is treated as a qualified REIT dividend only if the shareholder receiving such dividend holds the dividend-paying regulated investment company shares for at least 46 days of the 91-day period

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beginning 45 days before the shares become ex-dividend, and is not under an obligation to make related payments with respect to a position in substantially similar or related property. The Fund is permitted to report such part of its dividends as Section 199A dividends as are eligible, but is not required to do so.

Subject to any future regulatory guidance to the contrary, distributions attributable to qualified publicly traded partnership income from the Fund's investments in master limited partnerships ("MLPs") will ostensibly not qualify for the deduction available to non-corporate taxpayers in respect of such amounts received directly from an MLP.

The Code generally imposes a 3.8% Medicare contribution tax on the net investment income of certain individuals, estates and trusts to the extent their income exceeds certain threshold amounts. For these purposes, "net investment income" generally includes, among other things, (i) distributions paid by the Fund of net investment income and capital gains (other than exempt-interest dividends, defined below) as described above, and (ii) any net gain from the sale, redemption, exchange, or other taxable disposition of Fund shares. Shareholders are advised to consult their tax advisers regarding the possible implications of this additional tax on their investment in the Fund.

Any Fund dividend that is declared in October, November, or December of any calendar year, payable to shareholders of record in such a month and paid during the following January, will be treated as if received by the shareholders on December 31 of the year in which the dividend is declared. The Fund will notify shareholders regarding the U.S. federal tax status of its distributions after the end of each calendar year.

If the Fund makes a distribution to a shareholder in excess of the Fund's current and accumulated earnings and profits in any taxable year, the excess distribution will be treated as a return of capital to the extent of such shareholder's tax basis in its shares, and thereafter as capital gain. A return of capital is not taxable, but it reduces a shareholder's tax basis in its shares, thus reducing any loss or increasing any gain on a subsequent taxable disposition by the shareholder of its shares.

Any Fund distribution, other than dividends that are declared by the Fund on a daily basis, will have the effect of reducing the per share net asset value of Fund shares by the amount of the distribution. If you buy shares when a Fund has unrealized or realized but not yet distributed ordinary income or capital gains, such income or gain will be included in the price you pay for the shares, and you may receive a portion back as a taxable distribution even though such distribution may economically represent a return of your investment.

If the Fund holds, directly or indirectly, one or more "tax credit bonds" issued on or prior to December 31, 2017 (including build America bonds issued on or before December 31, 2010, clean renewable energy bonds and qualified tax credit bonds) on one or more applicable dates during a taxable year, the Fund may elect to permit its shareholders to claim a tax credit on their income tax returns equal to each shareholder's proportionate share of tax credits from the applicable bonds that otherwise would be allowed to the Fund. In such a case, shareholders must include in gross income (as interest) their proportionate share of the amount of those offsetting tax credits. A shareholder's ability to claim a tax credit associated with one or more tax credit bonds may be subject to certain limitations imposed by the Code. Even if the Fund is eligible to pass through tax credits to shareholders, the Fund may choose not to do so.

Capital Loss Carryforwards — Distributions from capital gains are generally made after applying any available capital loss carryforwards. For details regarding capital loss carryforwards, please see "Tax Treatment of the Fund" above. Additionally, the amounts and expiration dates, if any, of any capital loss carryforwards available to the Fund are shown in the notes to the financial statements for the Fund.

Dividends-Received Deduction — In general, dividends of net investment income received by corporate shareholders of the Fund qualify for the dividends-received deduction generally available to corporations to the extent of the amount of eligible dividends received by the Fund from domestic corporations, provided the shareholder otherwise qualifies for the deduction with respect to its holding of Fund shares. Availability of the deduction for particular corporate shareholders is subject to certain limitations, and deducted amounts may result in certain basis adjustments. Payments in lieu of dividends, such as payments pursuant to securities lending arrangements, generally will not qualify for the dividends received deduction.

Disposition of Shares — In general, any gain or loss realized upon a disposition of Fund shares by a shareholder that holds such shares as a capital asset will be treated as a long-term capital gain or loss if the shares have been held for more than 12 months, and otherwise as a short-term capital gain or loss. However, any loss realized upon a disposition of Fund shares held for six months or less will be treated as a long-term capital loss to the extent of any Capital Gain Dividends received (or deemed received) by the shareholder with respect to those shares. Further, all or a portion of any loss realized upon a taxable disposition of Fund shares will be disallowed under the wash-sale rules as described in the Code if other substantially identical shares of the Fund are purchased within 30 days before or after the disposition. In such a case, the basis of the newly purchased shares will be adjusted to reflect the disallowed loss. The wash-sale rules do not apply to taxable dispositions of shares in a money market fund.

Shares Purchased Through Tax-Qualified Plans — Distributions by the Fund to retirement plans that qualify for tax-advantaged treatment under U.S. federal income tax laws will not be taxable. Special tax rules apply to investments through such plans. You should consult your tax adviser to determine the suitability of the Fund as an investment through such a plan and the tax treatment of distributions (including distributions of amounts attributable to an investment in the Fund) from such a plan.

U.S. Taxation of Non-U.S. Persons — Distributions by the Fund to shareholders that are not "United States persons" within the meaning of the Code ("Non-U.S. Shareholders") properly reported by the Fund as (i) Capital Gain Dividends, (ii) short-term capital gain dividends, and (iii) interest-related dividends, each as defined and subject to certain conditions described below, generally will not be subject to withholding of U.S. federal income tax. However, such dividends may be subject to backup withholding, as discussed below.

In general, the Code defines (i) "short-term capital gain dividends" as distributions of net short-term capital gains in excess of net long-term capital losses and (ii) "interest-related dividends" as distributions from U.S. source interest income of types similar to those not subject to U.S. federal income tax if earned directly by an individual Non-U.S. Shareholder, in each case to the extent such distributions are properly reported as such by the Fund in a written notice to shareholders.

The exceptions to withholding for short-term capital gain dividends and Capital Gain Dividends do not apply to (A) distributions to an individual Non-U.S. Shareholder who is present in the United States for a period or periods aggregating 183 days or more during the year of the distribution and (B) distributions attributable to gain that is treated as effectively connected with the conduct by the Non-U.S. Shareholder of a trade or business within the United States, under special rules regarding the disposition of U.S. real property interests as described below. The exception to withholding for interest-related dividends does not apply to distributions to a Non-U.S.

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Shareholder (A) that has not provided a satisfactory statement that the beneficial owner is not a United States person, (B) to the extent that the dividend is attributable to certain interest on an obligation if the Non-U.S. Shareholder is the issuer or is a 10% shareholder of the issuer, (C) that is within certain foreign countries that have inadequate information exchange with the United States, or (D) to the extent the dividend is attributable to interest paid by a person that is a related person of the Non-U.S. Shareholder and the Non-U.S. Shareholder is a controlled foreign corporation. The Fund is permitted to report such part of its dividends as short-term capital gain and/or interest-related dividends as are eligible, but is not required to do so. In the case of shares held through an intermediary, the intermediary may withhold even if the Fund reports all or a portion of a payment as a short-term capital gain or interest-related dividend. Non-U.S. Shareholders should contact their intermediaries with respect to the application of these rules to their accounts.

Distributions by the Fund to Non-U.S. Shareholders other than Capital Gain Dividends, short-term capital gain dividends, interest-related dividends and exempt-interest dividends (e.g., dividends attributable to dividend and foreign-source interest income or to short-term capital gains or U.S. source interest income to which the exception from withholding described above does not apply) are generally subject to withholding of U.S. federal income tax at a rate of 30% (or lower applicable treaty rate).

If a beneficial holder who is a Non-U.S. Shareholder has a trade or business in the United States, and the dividends are effectively connected with the conduct by the beneficial holder of a trade or business in the United States, the dividend will be subject to U.S. federal net income taxation at regular income tax rates.

Special rules apply to distributions to Non-U.S. Shareholders from a Fund that is a qualified investment entity ("QIE") because it is either a "U.S. real property holding corporation" ("USRPHC") or would be a USRPHC but for the operation of the exceptions to the definition described below. Additionally, special rules apply to the sale of shares in a Fund that is a USRPHC or former USRPHC. Very generally, a USRPHC is a domestic corporation that holds U.S. real property interests ("USRPIs") – USRPIs are defined as any interest in U.S. real property or any equity interest in a USRPHC or former USRPHC – the fair market value of which equals or exceeds 50% of the sum of the fair market values of the corporation's USRPIs, interests in real property located outside the United States and other assets. A Fund that holds (directly or indirectly) significant interests in REITs may be a USRPHC. Interests in domestically controlled QIEs, including regulated investment companies and REITs that are QIEs, not-greater-than-10% interests in publicly traded classes of stock in REITs and not-greater-than-5% interests in publicly traded classes of stock in regulated investment companies generally are not USRPIs, but these exclusions do not apply for purposes of determining whether the Fund is a QIE.

If the Fund were a QIE, any distributions by the Fund (including, in certain cases, distributions made by the Fund in redemption of its shares) that are attributable directly or indirectly to (i) distributions received by the Fund from a lower-tier regulated investment company or REIT that the Fund is required to treat as USRPIs gain in its hands, and (ii) gains realized on the disposition of USRPIs by the Fund would retain their character as gains realized from USRPIs in the hands of the Fund's Non-U.S. Shareholders and would be subject to U.S. tax withholding.

In addition, such distributions could result in the Non-U.S. Shareholder being required to file a U.S. tax return and pay tax on the distributions at regular U.S. federal income tax rates. The consequences to a Non-U.S. Shareholder, including the rate of such withholding and character of such distributions (e.g., as ordinary income or USRPI gain), would vary depending upon the extent of the Non-U.S. Shareholder's current and past ownership of the Fund. Non-U.S. Shareholders of the Fund are also subject to wash-sale rules to prevent the avoidance of the tax-filing and tax-payment obligations discussed above through the sale and repurchase of Fund shares.

In addition, if an interest in the Fund were a USRPI, the Fund typically would be required to withhold U.S. tax on the proceeds of a share redemption by a greater-than-5% Non-U.S. Shareholder, and that shareholder typically would be required to file a U.S. income tax return for the year of the disposition of any of its Fund shares and pay any additional tax due on the gain.

Under U.S. federal tax law, a beneficial holder of shares who is a Non-U.S. Shareholder is not, in general, subject to U.S. federal income tax on gains (and is not allowed a deduction for losses) realized on the sale of shares of the Fund unless (i) such gain is effectively connected with the conduct of a trade or business carried on by such holder within the United States, (ii) in the case of an individual holder, the holder is present in the United States for a period or periods aggregating 183 days or more during the year of the sale and certain other conditions are met, or (iii) the shares are USRPIs.

To qualify for any exemptions from withholding described above or for lower withholding tax rates under income tax treaties, or to establish an exemption from backup withholding, a Non-U.S. Shareholder must comply with special certification and filing requirements relating to its non-U.S. status (including, in general, furnishing an IRS Form W-8BEN, W-8BEN-E or substitute form). Non-U.S. Shareholders should consult their tax advisers in this regard.

Special rules (including withholding and reporting requirements) apply to non-U.S. entities treated as partnerships for U.S. federal income tax purposes and those holding Fund shares through non-U.S. partnerships. Additional considerations may apply to non-U.S. trusts and estates. Investors holding Fund shares through non-U.S. entities should consult their tax advisers about their particular situation.

A Non-U.S. Shareholder may be subject to state and local tax and to the U.S. federal estate tax in addition to the U.S. federal income tax referred to above. Non-U.S. investors in the Fund should consult their tax advisers with respect to the potential application of these rules.

Shareholder Reporting Obligations with Respect to Foreign Bank and Financial Accounts – Shareholders that are "United States persons" within the meaning of the Code and own, directly or indirectly, more than 50% of the Fund by vote or value could be required to report annually their "financial interest" in the Fund's "foreign financial accounts," if any, on FinCEN Form 114, Report of Foreign Bank and Financial Accounts (FBAR). Shareholders should consult a tax adviser regarding the applicability to them of this reporting requirement.

Other Reporting and Withholding Requirements — Sections 1471-1474 of the Code and the U.S. Treasury Department and IRS guidance issued thereunder (collectively, "FATCA") generally require the Fund to obtain information sufficient to identify the status of each of its shareholders under FATCA or under an applicable intergovernmental agreement (an "IGA") between the United States and a foreign government. If a shareholder fails to provide the requested information or otherwise fails to comply with FATCA or an IGA, the Fund may be required to withhold under FATCA at a rate of 30% with respect to that shareholder on ordinary dividends it pays. The IRS and the U.S. Treasury Department have issued proposed regulations providing that these withholding rules will not apply to the gross proceeds of share redemptions or Capital Gain Dividends the Fund pays. If a payment by the Fund is subject to FATCA withholding, the Fund is required to withhold even if such payment would otherwise be exempt from withholding under the rules applicable to Non-U.S. Shareholders described above (e.g., short-term capital gain dividends and interest-related dividends).

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Each prospective investor is urged to consult its tax adviser regarding the applicability of FATCA and any other reporting requirements with respect to the prospective investor's own situation, including investments through an intermediary.

Backup Withholding — The Fund is also required in certain circumstances to apply backup withholding on taxable dividends, including Capital Gain Dividends, redemption proceeds and certain other payments that are paid to any non-corporate shareholder (including a Non-U.S. Shareholder) who does not furnish to the Fund certain information and certifications or who is otherwise subject to backup withholding. Shareholders who are neither citizens nor residents of the United States may qualify for exemption from backup withholding and should consult their tax advisers in this regard. The backup withholding rules may also apply to distributions that are properly reported as exempt-interest dividends.

Backup withholding is not an additional tax. Any amounts withheld may be credited against the shareholder's U.S. federal income tax liability, provided the appropriate information is timely furnished to the IRS.

Foreign Income Taxation of a Non-U.S. Shareholder — Distributions received from the Fund by a Non-U.S. Shareholder may also be subject to tax under the laws of the Non-U.S. Shareholder's own jurisdiction.

State and Local Income Taxes: U.S. Government Securities — Dividends paid by the Fund that are derived from interest on obligations of the U.S. Government and certain of its agencies and instrumentalities (but generally not distributions of capital gains realized upon the disposition of such obligations) may be exempt from state and local income taxes. The Fund generally intends to advise shareholders of the extent, if any, to which its dividends consist of such interest. Shareholders are urged to consult their tax advisers regarding the possible exclusion of such portion of their dividends for state and local income tax purposes.

Tax Shelter Reporting — Under U.S. Treasury Department regulations, if a shareholder recognizes a loss with respect to the Fund's shares of at least $2 million in any single taxable year or $4 million in any combination of taxable years for an individual shareholder or at least $10 million in any single taxable year or $20 million in any combination of taxable years for a corporate shareholder, the shareholder must file with the IRS a disclosure statement on IRS Form 8886. Direct shareholders of portfolio securities are in many cases excepted from this reporting requirement, but under current guidance, shareholders of a regulated investment company are not excepted. Future guidance may extend the current exception from this reporting requirement to shareholders of most or all regulated investment companies. The fact that a loss is reportable under these regulations does not affect the legal determination of whether the taxpayer's treatment of the loss is proper. Shareholders should consult their tax advisers to determine the applicability of these regulations in light of their individual circumstances.

Certain Investments — Any investment in zero coupon bonds, deferred interest bonds, payment-in-kind bonds, certain inflation-adjusted debt instruments, certain stripped securities, and certain obligations purchased at a market discount (including certain high yield debt obligations) will cause a Fund to recognize income prior to the receipt of cash payments with respect to those investments. To distribute this income and avoid a tax on the Fund, the Fund may be required to liquidate portfolio securities that it might otherwise have continued to hold, potentially resulting in additional taxable gain or loss to the Fund. In the event the Fund realizes net capital gains from such transactions, its shareholders may receive a larger capital gain distribution than they would in the absence of such transactions. Such investments may also affect the character of income recognized by the Fund.

Investments in debt obligations that are at risk of, or in, default, present special tax issues for a Fund. Tax rules are not entirely clear about issues such as whether and, if so, to what extent the Fund should recognize market discount on a debt obligation, when the Fund may cease to accrue interest, original issue discount or market discount, when and to what extent the Fund may take deductions for bad debts or worthless securities and how the Fund should allocate payments received on obligations between principal and income. These and other related issues will be addressed by the Fund when, as, and if it invests in such securities, in order to seek to ensure that it distributes sufficient income to preserve its status as a regulated investment company and does not become subject to U.S. federal income or excise tax.

Very generally, where the Fund purchases a bond at a price that exceeds the redemption price at maturity – that is, at a premium – the premium is amortizable over the remaining term of the bond. In the case of a taxable bond, if the Fund makes an election applicable to all such bonds it purchases, which election is irrevocable without consent of the IRS, the Fund reduces the current taxable income from the bond by the amortized premium and reduces its tax basis in the bond by the amount of such offset; upon the disposition or maturity of such bonds acquired on or after January 4, 2013, the Fund is permitted to deduct any remaining premium allocable to a prior period. In the case of a tax-exempt bond, tax rules require the Fund to reduce its tax basis by the amount of amortized premium.

Any investment by the Fund in equity securities of REITs qualifying as such under Subchapter M of the Code may result in the Fund's receipt of cash in excess of the REIT's earnings; if the Fund distributes these amounts, these distributions could constitute a return of capital to Fund shareholders for U.S. federal income tax purposes. Dividends received by a Fund from a REIT will not qualify for the corporate dividends-received deduction and generally will not constitute qualified dividend income.

Under a notice issued by the IRS in October 2006 and U.S. Treasury Department regulations that have yet to be issued but may apply retroactively, a portion of a Fund's income (including income allocated to the Fund from a REIT or other pass-through entity) that is attributable to a residual interest in a real estate mortgage investment conduit ("REMIC") or an equity interest in a taxable mortgage pool ("TMP") (referred to in the Code as an "excess inclusion") will be subject to U.S. federal income tax in all events. This notice also provides, and the regulations are expected to provide, that excess inclusion income of a regulated investment company will be allocated to shareholders of the regulated investment company in proportion to the dividends received by such shareholders, with the same consequences as if the shareholders held the related residual interest directly. As a result, a Fund investing in such interests may not be a suitable investment for charitable remainder trusts ("CRTs") (see below).

In general, excess inclusion income allocated to shareholders (i) cannot be offset by net operating losses (subject to a limited exception for certain thrift institutions), (ii) will constitute unrelated business taxable income ("UBTI") to entities (including a qualified pension plan, an individual retirement account (IRA), a 401(k) plan, a Keogh plan or other tax-exempt entity) subject to tax on UBTI, thereby potentially requiring such an entity that is allocated excess inclusion income, and otherwise might not be required to file a tax return, to file a tax return and pay tax on such income, and (iii) in the case of a Non-U.S. Shareholder, will not qualify for any reduction in U.S. federal withholding tax. A shareholder will be subject to income tax on such inclusions notwithstanding any exemption therefrom otherwise available under the Code.

Income of a regulated investment company that would be UBTI if earned directly by a tax-exempt entity generally will not constitute UBTI when distributed to a tax-exempt shareholder of the regulated investment company. Notwithstanding this "blocking" effect, a tax-exempt

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shareholder could realize UBTI by virtue of its investment in a Fund if shares in the Fund constitute debt-financed property in the hands of the tax-exempt shareholder within the meaning of Section 514(b) of the Code.

A tax-exempt shareholder may also recognize UBTI if the Fund recognizes "excess inclusion income" derived from direct or indirect investments in residual interests in REMICs or equity interests in TMPs as described above, if the amount of such income recognized by the Fund exceeds the Fund's investment company taxable income (after taking into account deductions for dividends paid by the Fund).

In addition, special tax consequences apply to CRTs that invest in regulated investment companies that invest directly or indirectly in residual interests in REMICs or equity interests in TMPs. Under legislation enacted in December 2006, a CRT, as defined in Section 664 of the Code, that realizes UBTI for a taxable year must pay an excise tax annually of an amount equal to such UBTI. Under IRS guidance issued in October 2006, a CRT will not recognize UBTI solely as a result of investing in a fund that recognizes "excess inclusion income." Rather, as described above, if at any time during any taxable year a CRT (or one of certain other tax-exempt shareholders, such as the United States, a state or political subdivision, or an agency or instrumentality thereof, and certain energy cooperatives) is a record holder of a share in a fund that recognizes "excess inclusion income," then the fund will be subject to a tax on that portion of its "excess inclusion income" for the taxable year that is allocable to such shareholders at the highest U.S. federal corporate income tax rate. The extent to which the IRS guidance in respect of CRTs remains applicable in light of the December 2006 CRT legislation is unclear. To the extent permitted under the 1940 Act, the Fund may elect to specially allocate any such tax to the applicable CRT, or other shareholder, and thus reduce such shareholder's distributions for the year by the amount of the tax that relates to such shareholder's interest in the Fund. The Fund has not yet determined whether such an election will be made. CRTs are urged to consult their tax advisers concerning the consequences of investing in the Fund.

The Fund's transactions in options, futures contracts, hedging transactions, forward contracts, short sales, swaps, straddles, foreign currencies, and related transactions will be subject to special tax rules (including mark-to-market, constructive sale, straddle, wash sale and short sale rules) that may affect the amount, timing, and character of Fund income and distributions to shareholders. For example, certain positions held by the Fund may be "Section 1256 contracts." On the last business day of each taxable year (and, for purposes of the 4% excise tax, on certain other dates as prescribed under the Code), these positions will be marked to market (i.e., treated as if closed out on that day), and any gain or loss associated with such positions will be treated as 60% long-term and 40% short-term capital gain or loss (except that foreign currency gain or loss arising from Section 1256 contracts may be ordinary in character). Certain positions held by the Fund that substantially diminish its risk of loss with respect to other positions in its portfolio may constitute "straddles" for U.S. federal income tax purposes. The straddle rules may cause deferral of Fund losses, adjustments in the holding periods of Fund securities, and conversion of short-term capital losses into long-term capital losses and long-term capital gains into short-term capital gains. Certain tax elections exist for straddles that may alter the effect with respect to these investments. These rules can cause the Fund to recognize income for tax purposes prior to the receipt of cash payments with respect to the underlying investments; in order to distribute this income and avoid a tax on the Fund, the Fund may be required to liquidate portfolio securities that it might otherwise have continued to hold, potentially resulting in additional taxable gain or loss to the Fund and additional taxable distributions to shareholders. In addition, because the tax rules applicable to derivative financial instruments are in some cases uncertain under current law, an adverse determination or future guidance by the IRS with respect to these rules (which determination or guidance could be retroactive) may affect whether a Fund has made sufficient distributions, and otherwise satisfied the relevant requirements, to maintain its qualification as a regulated investment company and avoid a fund-level tax. The Fund intends to limit its activities in options, futures contracts, forward contracts, short sales, and swaps and related transactions, as well as any commodity-related investments, to the extent necessary to meet the requirements for qualification and treatment as a regulated investment company under Subchapter M of the Code.

Certain of the Fund's hedging activities (including its transactions, if any, in foreign currencies or foreign currency-denominated instruments) are likely to produce a difference between its book income and its taxable income. If the Fund's book income exceeds the sum of its taxable income and net tax-exempt income (if any), the distribution (if any) of such excess generally will be treated as (i) a dividend to the extent of the Fund's remaining earnings and profits (including earnings and profits arising from any tax-exempt income), (ii) thereafter, as a return of capital to the extent of the recipient's basis in its shares, and (iii) thereafter, as gain from the sale or exchange of a capital asset. If the Fund's book income is less than the sum of its taxable income and net tax-exempt income (if any), the Fund could be required to make distributions exceeding book income to qualify as a regulated investment company that is accorded special tax treatment.

Special tax considerations apply with respect to any foreign investments by the Fund. Foreign exchange gains and losses realized by the Fund may be treated as ordinary income and loss. The Code grants the Secretary of the Treasury the right to issue tax regulations that would exclude income and gains from direct investments in foreign currencies from treatment as qualifying income for purposes of the qualifying income test for regulated investment companies described earlier, in cases where the foreign currency gains are not directly related to the company's principal business of investing in stocks or securities (or options or futures with respect to stocks or securities). If the Secretary of the Treasury were to issue such regulations, a Fund may need to change its investment practices in order to qualify as a regulated investment company. In addition, there is a remote possibility that such regulations may be applied retroactively.

Equity investments by the Fund in certain "passive foreign investment companies" ("PFICs") could potentially subject the Fund to U.S. federal income tax (including interest charges) on distributions received from such PFIC or on proceeds received from the disposition of shares in such PFIC. This tax cannot be eliminated by making distributions to Fund shareholders. However, a Fund may elect to avoid the imposition of that tax. For example, the Fund may elect to treat a PFIC as a "qualified electing fund" (i.e., make a "QEF election"), in which case the Fund will be required to include its share of the PFIC's income and net capital gains annually, regardless of whether it receives any distribution from the PFIC. A Fund also may make an election to mark the gains (and to a limited extent losses) in such holdings "to the market" as though it had sold (and, solely for purposes of this mark-to-market election, repurchased) its holdings in those PFICs on the last day of the Fund's taxable year. Such gains and losses are treated as ordinary income and loss. The QEF and mark-to-market elections may accelerate the recognition of income (without the receipt of cash) and increase the amount required to be distributed by a Fund to avoid taxation. Making either of these elections therefore may require the Fund to liquidate other investments (including when it is not advantageous to do so) to meet its distribution requirement, which also may accelerate the recognition of gain and affect the Fund's total return. Dividends paid by PFICs will not be eligible to be treated as "qualified dividend income." Because it is not always possible to identify a foreign corporation as a PFIC, the Fund may incur the tax and interest charges described above in some instances.

Investment income received by the Fund and gains and proceeds with respect to foreign securities may be subject to foreign withholding or other taxes. The United States has entered into tax treaties with many foreign countries that may entitle the Fund to a reduced rate of tax or

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an exemption from tax on such income or gains; the Fund intends to qualify for treaty-reduced rates where available. It is not possible, however, to determine the Fund's effective rate of foreign tax in advance, since the amount of the Fund's assets to be invested within various countries is not known.

If more than 50% of the total assets of a Fund consists of direct investments in foreign securities at the close of its taxable year, the Fund may elect to "pass through" to its shareholders foreign income taxes paid by it. In addition, a "qualified fund of funds" (a regulated investment company at least 50% of the total assets of which are represented by interests in other regulated investment companies (for purposes of this section, "Underlying Funds") at the close of each quarter of its taxable year) will be permitted to make the same election in respect of foreign taxes paid by such Fund and by Underlying Funds that themselves make such an election. If the Fund so elects, shareholders will be required to treat their pro rata portions of qualified taxes paid by the Fund, and, in the case of a qualified fund of funds, paid by the Underlying Funds, to foreign countries in respect of foreign securities that the Fund has held for at least the minimum period specified in the Code, as part of the amounts distributed to them by the Fund, and thus to include those portions in their gross income for U.S. federal income tax purposes in the year the foreign income tax was paid. Provided certain conditions are met and subject to limitation, a shareholder who includes such foreign income taxes paid by the Fund in its gross income may be able to claim a credit or deduction. No deduction will be permitted for individuals in computing their U.S. federal alternative minimum tax liability. Shareholders that are not subject to U.S. federal income tax, and those who invest in the Fund through tax-advantaged accounts (including those who invest through individual retirement accounts (IRAs) or other tax-advantaged retirement plans), generally will receive no benefit from any tax credit or deduction passed through by the Fund. If the Fund is not eligible, or does not elect, to "pass through" to its shareholders foreign income taxes it has paid, shareholders will not be able to claim any deduction or credit for any part of the foreign taxes paid by the Fund. In addition, investments in certain foreign securities (including fixed income securities and derivatives) denominated in foreign currencies may increase or accelerate the Fund's recognition of ordinary income and may affect the timing, amount, or character of the Fund's distributions.

If the Fund qualifies as a "qualified fund of funds" (defined above), it will be permitted to distribute "exempt-interest dividends" under the Code and thereby pass through to its shareholders the tax-exempt character of any exempt-interest dividends it receives from Underlying Funds in which it invests, or interest on any tax-exempt obligations in which it directly invests, if any. Such distributions may be treated as an item of tax preference for individual shareholders under the U.S. federal alternative minimum tax and may be subject to state and local taxes. Shareholders are required to report exempt-interest dividends received from the Fund on their U.S. federal income tax returns.

#### Special Rules for Municipal Fund Distributions
The following special rules apply to shareholders of a Fund whose objective is to invest primarily in obligations that pay interest that is exempt from U.S. federal income tax ("Municipal Fund").

Tax-Exempt Distributions -- The portion of the Municipal Fund's distributions of net investment income that is attributable to interest from tax-exempt securities will be reported by the Fund as an "exempt-interest dividend" under the Code and will generally be exempt from U.S. federal income tax in the hands of shareholders so long as at least 50% of the total value of the Fund's assets at the close of each quarter of the Fund's taxable year consists of securities generating interest that is exempt from U.S. federal tax under Section 103(a) of the Code. Distributions of tax-exempt interest earned from certain securities may, however, be treated as an item of tax preference for individual shareholders under the U.S. federal alternative minimum tax and may be subject to state and local taxes. Except when the Fund provides actual monthly percentage breakdowns, the percentage of income reported as tax-exempt will be applied uniformly to all distributions by the Fund of net investment income made during each fiscal year of the Fund and may differ from the actual percentage of distributions consisting of tax-exempt interest in any particular month. Shareholders are required to report exempt-interest dividends received from the Fund on their U.S. federal income tax returns.

Taxable Distributions -- The Municipal Fund may also earn some income that is taxable as ordinary income (including interest from any obligations that lose their U.S. federal tax exemption, proceeds from the disposition of certain market discount bonds, interest from advance refunding bonds issued after December 31, 2017, and income received in lieu of tax-exempt interest with respect to securities on loan) and may recognize taxable capital gains and losses as a result of the disposition of securities and from certain options and futures transactions. Shareholders normally will have to pay U.S. federal income tax on the non-exempt interest dividends and capital gain distributions they receive from the Fund, whether paid in cash or reinvested in additional shares of the Fund. However, the Municipal Fund does not expect that the non-tax-exempt portion of their net investment income, if any, will be substantial. Because the Municipal Fund expects to earn primarily tax-exempt interest income, it is expected that dividends from the Fund will not qualify for the dividends-received deduction for corporations and will not be treated as "qualified dividend income" for non-corporate shareholders.

Consequences of Distributions by the Municipal Fund: Effect of Accrued Tax-Exempt Income -- Shareholders disposing of shares after tax-exempt income has been accrued but not yet declared as a dividend should be aware that a portion of the proceeds realized upon disposition of the shares will reflect the existence of such accrued tax-exempt income and that this portion may be subject to tax even though it would have been tax-exempt had it been declared as a dividend prior to the disposition.

Certain Additional Information for Municipal Fund Shareholders -- Interest on indebtedness incurred by shareholders to purchase or carry Municipal Fund shares will not be deductible for U.S. federal income tax purposes in proportion to the percentage that the Fund's distributions of exempt-interest dividends bear to all of the Fund's distributions, excluding Capital Gain Dividends. Exempt-interest dividends are generally taken into account in calculating the amount of social security and railroad retirement benefits that may be subject to U.S. federal income tax. You should consult your tax adviser to determine what effect, if any, an investment in the Municipal Fund may have on the U.S. federal taxation of your benefits. Entities or persons who are "substantial users" (or persons related to "substantial users") of facilities financed by private activity bonds should consult their tax advisers before purchasing Fund shares.

Consequences of Disposition of Shares -- Any loss realized on a disposition of Municipal Fund shares held for six months or less will generally be disallowed to the extent of any exempt-interest dividends received with respect to those shares. This loss disallowance rule does not apply to a shareholder's disposition of Fund shares held for six months or less with respect to a regular exempt-interest dividend paid by the Fund if it declares substantially all of its net tax-exempt income as exempt-interest dividends on a daily basis and pays such dividends on at least a monthly basis. To the extent not disallowed, any such loss will be treated as a long-term capital loss to the extent of any distributions of long-term capital gain received (or deemed received) with respect to those shares.

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State and Local Income Taxes: Municipal Obligations -- The exemption of exempt-interest dividends for U.S. federal income tax purposes does not necessarily result in exemption under the income tax laws of any state or local taxing authority. Some states exempt from tax that portion of an exempt-interest dividend that represents interest received by a regulated investment company on its holdings of securities issued by that state and its political subdivisions and instrumentalities. Therefore, the Municipal Fund will report annually to its shareholders the percentage of interest income earned by it during the preceding year on municipal instruments and will indicate, on a state-by-state basis only, the source of such income.

**Taxes on Creation and Redemption of Creation Units** — An Authorized Participant that exchanges securities for Creation Units may realize a gain or loss equal to the difference between the fair market value of the Creation Units at the time of purchase and the sum of the Authorized Participant's cost basis in the securities transferred plus any cash paid.

An Authorized Participant that exchanges Creation Units for securities may realize a gain or loss equal to the difference between the Authorized Participant's cost basis in the Creation Units and the sum of the fair market value of the securities plus any cash received. The IRS, however, may assert that a loss realized upon an exchange of primarily securities for Creation Units cannot be deducted currently under the rules governing "wash sales," or on the basis that there has been no significant change in economic position. Authorized Participants who are dealers in securities are subject to different tax treatment on the exchange for or redemption of Creation Units. Authorized Participants exchanging securities for Creation Units or redeeming Creation Units should consult with their own tax advisor.

As a result of U.S. federal income tax requirements, the Trust, on behalf of the Fund, has the right to reject an order for Creation Units if the purchaser (or a group of purchasers) would, upon obtaining the shares so ordered, own 80% or more of the outstanding shares of the Fund and if, pursuant to Section 351 of the Code, the Fund would have a basis in the Deposit Securities different from the market value of such securities on the date of deposit. The Trust, on behalf of the Fund, also has the right to require information necessary to determine beneficial share ownership for purposes of the 80% determination described above. See the "Purchase and Redemption of Creation Units" section below.

#### BOOK ENTRY ONLY SYSTEM
The Depository Trust Company ("DTC") acts as securities depositary for the shares. Shares of the Fund are represented by securities registered in the name of DTC or its nominee, Cede & Co., and deposited with, or on behalf of, DTC. Except in the limited circumstance provided below, certificates will not be issued for shares.

DTC, a limited-purpose trust company, was created to hold securities of its participants (the "DTC Participants") and to facilitate the clearance and settlement of securities transactions among the DTC Participants in such securities through electronic book-entry changes in accounts of the DTC Participants, thereby eliminating the need for physical movement of securities certificates. DTC Participants include securities brokers and dealers, banks, trust companies, clearing corporations and certain other organizations, some of whom (and/or their representatives) own DTC. Access to the DTC system is also available to others such as banks, brokers, dealers and trust companies that clear through or maintain a custodial relationship with a DTC Participant, either directly or indirectly (the "Indirect Participants").

Beneficial ownership of shares is limited to DTC Participants, Indirect Participants and persons holding interests through DTC Participants and Indirect Participants. Ownership of beneficial interests is shown on, and the transfer of ownership is effected only through, records maintained by DTC (with respect to DTC Participants) and on the records of DTC Participants (with respect to Indirect Participants and beneficial owners that are not DTC Participants). Beneficial owners will receive from or through the DTC Participant a written confirmation relating to their purchase of shares.

Conveyance of all notices, statements and other communications to beneficial owners is effected as follows. Pursuant to the Depositary Agreement between the Trust on behalf of the Funds and DTC, DTC is required to make available to a Fund upon request and for a fee to be charged to the Fund a listing of the shares of the Fund held by each DTC Participant. The Fund, either directly or through a third-party service, shall inquire of each such DTC Participant as to the number of beneficial owners holding shares, directly or indirectly, through such DTC Participant. The Fund, either directly or through a third-party service, shall provide each such DTC Participant with copies of such notice, statement or other communication, in such form, number and at such place as such DTC Participant may reasonably request, in order that such notice, statement or communication may be transmitted by such DTC Participant, directly or indirectly, to such beneficial owners. In addition, the Fund shall pay to each such DTC Participant and/or third-party service a fair and reasonable amount as reimbursement for the expenses attendant to such transmittal, all subject to applicable statutory and regulatory requirements.

Share distributions shall be made to DTC or its nominee, Cede & Co., as the registered holder of all shares. DTC or its nominee, upon receipt of any such distributions, shall credit immediately DTC Participants' accounts with payments in amounts proportionate to their respective beneficial interests in shares of a Fund as shown on the records of DTC or its nominee. Payments by DTC Participants to Indirect Participants and beneficial owners of shares held through such DTC Participants will be governed by standing instructions and customary practices, as is now the case with securities held for the accounts of customers in bearer form or registered in a "street name," and will be the responsibility of such DTC Participants.

The Fund has no responsibility or liability for any aspects of the records relating to or notices to beneficial owners, or payments made on account of beneficial ownership interests in such shares, or for maintaining, supervising or reviewing any records relating to such beneficial ownership interests or for any other aspect of the relationship between DTC and the DTC Participants or the relationship between such DTC Participants and the Indirect Participants and beneficial owners owning through such DTC Participants.

DTC may determine to discontinue providing its service with respect to shares at any time by giving reasonable notice to the Fund and discharging its responsibilities with respect thereto under applicable law. Under such circumstances, the Fund shall take action either to find a replacement for DTC to perform its functions at a comparable cost or, if such a replacement is unavailable, to issue and deliver printed certificates representing ownership of shares, unless the Fund makes other arrangements with respect thereto satisfactory to the Exchange.

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#### PURCHASE AND REDEMPTION OF CREATION UNITS

#### General
The Fund offers, issues and sells shares only in Creation Units on a continuous basis through the Distributor, without a sales load, at the Fund's NAV next determined after receipt of an order in "proper form" (as defined below) on any Business Day. A "Business Day" is generally any day on which the Exchange is open for business. The time at which transactions and shares are priced and the time by which orders must be received may be changed in case of an emergency or if regular trading on the Exchange is stopped at a time other than its regularly scheduled closing time. For example, on days when an exchange closes earlier than normal, the Fund may require orders to be placed earlier in the day. The Fund reserves the right to reprocess creation and redemption transactions that were initially processed at a NAV other than the Fund's official closing NAV (as each may be subsequently adjusted), and to recover amounts from (or distribute amounts to) Authorized Participants based on the official closing NAV. The Fund reserves the right to advance the time by which creation and redemption orders must be received for same Business Day credit as otherwise permitted by the SEC.

In its discretion, the Fund reserves the right to increase or decrease the number of shares that constitutes a Creation Unit for the Fund. The Board reserves the right to declare a split or a consolidation in the number of shares outstanding of the Fund, and to make a corresponding change in the number of shares constituting a Creation Unit, in the event that the per share price in the secondary market rises (or declines) to an amount that falls outside the range deemed desirable by the Board.

The Fund may only issue Creation Units to, or redeem Creation Units from, an Authorized Participant, which is a member or participant of a clearing agency registered with the SEC, which has executed a written agreement with the Fund or Distributor that allows the Authorized Participant to place orders for the purchase and redemption of Creation Units ("Participant Agreement"). An Authorized Participant generally is either (i) a "Participating Party," i.e., a broker-dealer or other participant in the clearing process of the Continuous Net Settlement System (the "Clearing Process") of the National Securities Clearing Corporation ("NSCC"), a clearing agency that is registered with the SEC, or (ii) a "DTC Participant," i.e., eligible to utilize the Fed Book Entry System and/or DTC. For additional information about book entry and DTC as securities depository, see "Book Entry Only System."

All orders to purchase or redeem Creation Units must be placed by an Authorized Participant. An Authorized Participant may place orders for the creation or redemption of Creation Units through the Clearing Process, the Fed Book-Entry System and/or DTC, subject to the procedures set forth in the Participant Agreement. Pursuant to the terms of its Participant Agreement, an Authorized Participant will agree, and on behalf of itself or any investor on whose behalf it will act, to certain conditions, including that the Authorized Participant will make available in advance of each purchase of shares an amount of cash sufficient to pay the Cash Component (defined below), together with the transaction fees described below. An Authorized Participant acting on behalf of an investor may require the investor to enter into an agreement with such Authorized Participant with respect to certain matters, including payment of the Cash Component. Investors who are not Authorized Participants may make appropriate arrangements with an Authorized Participant to submit orders to purchase or redeem Creation Units of the Fund. Investors should be aware that their particular broker may not be a DTC Participant or may not have executed a Participant Agreement and that, therefore, orders to purchase Creation Units may have to be placed by the investor's broker through an Authorized Participant. In such cases, there may be additional charges to such investor. At any given time, there may be only a limited number of Authorized Participants. In addition, the Distributor may be appointed as the proxy of the Authorized Participant and may be granted a limited power of attorney under the Participant Agreement.

Creation Baskets may differ and the Fund may accept "custom baskets." A custom basket may include any of the following: (i) a basket that is composed of a non-representative selection of the Fund's portfolio holdings; or (ii) a representative basket that is different from the initial basket used in transactions on the same business day. The Fund has adopted policies and procedures that govern the construction and acceptance of baskets, including heightened requirements for certain types of custom baskets. Such policies and procedures provide the parameters for the construction and acceptance of custom baskets that are in the best interests of the Fund and its shareholders, establish processes for revisions to, or deviations from, such parameters, and specify the titles and roles of the employees of MFS who are required to review each custom basket for compliance with those parameters. In addition, when constructing custom baskets for redemptions, the tax efficiency of the Fund may be taken into account. The policies and procedures distinguish among different types of custom baskets that may be used and impose different requirements for different types of custom baskets in order to seek to mitigate against potential risks of conflicts and/or overreaching by an Authorized Participant.

#### Purchases (Creations)
**Portfolio Deposit.** The consideration for purchase of a Creation Unit generally consists of an in-kind deposit of a portfolio of securities ("Deposit Securities") designated by the Fund together with a deposit of a specified cash payment ("Cash Component") computed as described herein. Alternatively, the Fund may issue and redeem Creation Units in exchange for a specified all-cash payment ("Cash Deposit"). Together, the Deposit Securities and the Cash Component or, alternatively, the Cash Deposit, constitute the "Portfolio Deposit," which represents the minimum initial and subsequent investment amount for a Creation Unit. In the event the Fund requires Deposit Securities and a Cash Component in consideration for purchasing a Creation Unit, the function of the Cash Component is to compensate for any differences between the NAV per Creation Unit and the Deposit Amount, which is an amount equal to the market value of the Deposit Securities. The Cash Component would be an amount equal to the difference between the NAV of the shares (per Creation Unit) and the Deposit Amount. If the Cash Component is a positive number (the NAV per Creation Unit exceeds the Deposit Amount), the Authorized Participant will deliver the Cash Component. If the Cash Component is a negative number (the NAV per Creation Unit is less than the Deposit Amount), the Authorized Participant will receive the Cash Component. Computation of the Cash Component excludes any stamp duty or other similar fees and expenses payable upon transfer of beneficial ownership of the Deposit Securities, which shall be the sole responsibility of the Authorized Participant.

The Fund may determine, upon receiving a purchase order from an Authorized Participant, to accept a basket of securities or cash that differs from Deposit Securities or to substitute an amount of cash (i.e., a "cash-in-lieu" amount) to be added to the Cash Component to replace any Deposit Security. In cases where the Fund purchases portfolio securities with cash, the Authorized Participant will reimburse the Fund for, among other things, any difference between the market value at which the securities were purchased by the Fund and the cash in-lieu amount (which amount, at MFS' discretion, may be capped), applicable registration fees and taxes. Brokerage commissions incurred in connection

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with the Fund's acquisition of Deposit Securities will be at the expense of the Fund and will affect the value of all shares of the Fund. However, MFS may adjust the transaction fee to the extent the composition of the Deposit Securities changes or cash-in-lieu is added to the Cash Component to protect ongoing shareholders. The adjustments described above will reflect changes, known to MFS on the date of the announcement to be in effect by the time of delivery of the Portfolio Deposit, resulting from certain corporate actions.

**Procedures for Creation of Creation Units.** All purchase orders must be placed for one or more Creation Units. All orders to purchase Creation Units must be received by MFS or its agent no later than the closing time of regular trading hours on the Exchange (ordinarily 4:00 p.m. Eastern time) (the "Closing Time") or at an earlier time set forth in the Participant Agreement or otherwise provided to all Authorized Participants on the date such order is placed (the "Cut-Off Time") in order for the creation of Creation Units to be effected based on the NAV of shares of the Fund as next determined on such date after receipt of the order in proper form. The Fund reserves the right, upon notice to Authorized Participants pursuant to the Participant Agreement, to require orders to be placed earlier than the Closing Time.

The date on which an order to purchase Creation Units (or an order to redeem Creation Units as discussed below) is placed is referred to as the "Transmittal Date." Orders must be transmitted by an Authorized Participant by telephone, online portal, electronic, or other transmission method acceptable to the Transfer Agent or Distributor pursuant to procedures set forth in the Participant Agreement. Severe economic or market disruptions or changes, or telephone or other communications failure may impede the ability to reach the Fund or an Authorized Participant.

An Authorized Participant may request an investor to make certain representations or enter into agreements with respect to an order, including payments of cash to pay the Cash Component, when required. Investors should be aware that their particular broker may not have executed a Participant Agreement and that, therefore, orders to purchase Creation Units have to be placed by the investor's broker through an Authorized Participant that has executed a Participant Agreement. In such cases there may be additional charges to such investor. At any given time, there may be only a limited number of broker-dealers that have executed a Participant Agreement.

Those placing orders to purchase Creation Units should afford sufficient time to permit proper submission of the order to the Fund or its agent prior to the applicable deadlines on the Transmittal Date. Authorized Participants may ascertain the deadlines applicable to DTC and the Federal Reserve Bank wire system by contacting the operations department of the broker or depository institution effecting such transfer of Deposit Securities and Cash Component.

Portfolio Deposits must be delivered through the Federal Reserve System (for cash and government securities) and through DTC (for corporate and municipal securities) by an Authorized Participant that has executed a Participant Agreement. The Portfolio Deposit transfer must be ordered by the Authorized Participant on the Transmittal Date in a timely fashion so as to ensure the delivery of the requisite number of Deposit Securities through DTC to the account of a Fund by no later than 1:00 p.m. Eastern time of the next Business Day immediately following the Transmittal Date. In certain cases, Authorized Participants will purchase and redeem Creation Units of a Fund on the same Transmittal Date. In these instances, the Fund reserves the right to settle these transactions on a net basis.

All questions as to the number of Deposit Securities to be delivered, and the validity, form and eligibility (including time of receipt) for the deposit of any tendered securities, will be determined by the Fund, whose determination shall be final and binding. For purchase orders composed solely of a Cash Component, the amount of cash equal to the Cash Component must be transferred directly to the Fund's custodian through the Federal Reserve Bank wire transfer system in a timely manner so as to be received by the Fund's custodian no later than 10:00 a.m. Eastern time on the next Business Day immediately following such Transmittal Date. An order to purchase Creation Units is deemed received by the Distributor or its agent on the Transmittal Date if (i) such order is received by the Distributor or its agent not later than the Cut-Off Time on such Transmittal Date; and (ii) all other procedures set forth in the Participant Agreement are properly followed. However, if a Fund's custodian does not receive the required Deposit Securities together with the associated Cash Component by 1:00 p.m. or, with respect to purchase orders composed solely of a Cash Component, the Cash Component by 10:00 a.m. on the next Business Day immediately following the Transmittal Date, such order will be deemed not in proper form and canceled. Upon written notice to the Distributor or its agent, such canceled order may be resubmitted the following Business Day using a Portfolio Deposit as newly constituted to reflect the next calculated NAV of a Fund. The delivery of Creation Units so purchased will occur not later than the second Business Day following the day on which the purchase order is deemed received by the Distributor.

The Distributor or its agent will inform the Transfer Agent, MFS and the Fund's custodian upon receipt of a purchase order. The custodian will then provide such information to the appropriate sub-custodian. The custodian will cause the sub-custodian to maintain an account into which the Deposit Securities (or the cash value of all or part of such securities, in the case of a cash purchase or "cash-in-lieu" amount) will be delivered. Deposit Securities must be delivered to an account maintained at the applicable local custodian. The Fund must also receive, on or before the contractual settlement date, immediately available or same day funds estimated by the custodian to be sufficient to pay the Cash Component next determined after receipt in proper form of the purchase order, together with the purchase transaction fee described below.

Once the Fund has accepted a purchase order, the Fund will confirm the issuance of a Creation Unit of the Fund against receipt of payment, at such NAV as will have been calculated after receipt in proper form of such order. The Distributor or its agent will then transmit a confirmation of acceptance of such order.

Creation Units will not be issued until the transfer of good title to the Fund of the Deposit Securities and the payment of the Cash Component have been completed. When the sub-custodian has confirmed to the custodian that the required Deposit Securities (or the cash value thereof) have been delivered to the account of the relevant sub-custodian, the Distributor and MFS will be notified of such delivery and the Fund will issue and cause the delivery of the Creation Units.

Creation Units may be created in advance of receipt by the Fund of all or a portion of the applicable Deposit Securities as described below. In these circumstances, the initial deposit will have a value greater than the NAV of the shares on the date the order is placed in proper form since, in addition to available Deposit Securities, cash must be deposited in an amount equal to the sum of (i) the Cash Component (including any Transaction Fees), plus (ii) at least 105% and up to 115% of the market value of the undelivered Deposit Securities ("Additional Cash Deposit"). The order shall be deemed to be received on the Business Day on which the order is placed provided that the order is placed in proper form prior to the Cut-Off Time on such date and federal funds in the appropriate amount are deposited with the Fund's custodian by 10:00 a.m. Eastern time the following Business Day. If the order is not placed in proper form by the Cut-Off Time or federal funds in the appropriate amount are not received by 10:00 a.m. Eastern time the next Business Day, then the order may be deemed to be rejected and the Authorized Participant shall be liable to the Fund for losses, if any, resulting therefrom. An additional amount of cash shall be required to be

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deposited with the Fund, pending delivery of the missing Deposit Securities to the extent necessary to maintain the Additional Cash Deposit with the Fund in an amount at least equal to 105% and up to 115% of the daily marked to market value of the missing Deposit Securities. In the sole discretion of the Fund following the Business Day on which the order was received the Fund may use the cash on deposit to purchase the missing Deposit Securities. Authorized Participants will be liable to the Fund for the costs incurred by the Fund in connection with any such purchases. These costs will be deemed to include the amount by which the actual purchase price of the Deposit Securities exceeds the market value of such Deposit Securities on the day the purchase order was deemed received by the Distributor plus the brokerage and related transaction costs associated with such purchases and the Authorized Participant shall be liable to the Fund for any shortfall between the cost to the Fund of purchasing any missing Deposit Securities and the value of the collateral. The Fund will return any unused portion of the Additional Cash Deposit once all of the missing Deposit Securities have been properly received by the Distributor or purchased by the Fund and deposited into the Fund.

**Placing Creation Orders Using the Clearing Process.** The Clearing Process is the process of creating or redeeming Creation Units through the Continuous Net Settlement System of the NSCC. Portfolio Deposits made through the Clearing Process must be delivered through a Participating Party that has executed a Participant Agreement. The Participant Agreement authorizes the Transfer Agent to transmit, on behalf of the Participating Party, such trade instructions to the NSCC as are necessary to effect the Participating Party's creation order. Pursuant to such trade instructions, the Participating Party agrees to deliver the Portfolio Deposit to the Transfer Agent, together with such additional information as may be required by the Distributor.

**Placing Creation Orders Outside the Clearing Process.** Portfolio Deposits made outside the Clearing Process must be delivered through a DTC Participant that has executed a Participant Agreement. A DTC Participant who wishes to place a creation order outside the Clearing Process need not be a Participating Party, but such orders must state that the DTC Participant is not using the Clearing Process and that the creation instead will be effected through a transfer of securities and cash directly through DTC.

**Acceptance of Creation Orders.** Using the Clearing Process, the Transfer Agent will deliver to the Authorized Participant a confirmation of acceptance of a creation order received in proper form. Outside of using the Clearing Process, the Authorized Participant will receive an acknowledgment of the creation order acceptance. A creation order is deemed to be irrevocable upon the delivery of the confirmation of acceptance, subject to the conditions below.

The Fund reserves the right to reject a purchase order transmitted to it by the Distributor in certain circumstances, including but not limited to (i) the order is not in proper form; (ii) the investor(s), upon obtaining the shares ordered, would own 80% or more of the currently outstanding shares of the Fund; (iii) acceptance of the Portfolio Deposit would, in the opinion of the Fund, be unlawful; or (iv) in the event that circumstances outside the control of the Fund make it impossible to process creation orders for all practical purposes. Examples of such circumstances include, without limitation, public service or utility problems such as earthquakes, fires, floods, extreme weather conditions, and power outages resulting in telephone, telecopy, and computer failures; wars; civil or military disturbances, including acts of civil or military authority or governmental actions; terrorism; sabotage; epidemics; riots; labor disputes; cybersecurity incidents; market conditions or activities causing trading halts; systems failures involving computer or other information systems affecting the Fund, MFS, the Distributor, DTC, the Transfer Agent, or any other participant in the purchase process, and similar extraordinary events. The Fund and the Distributor have the right to require information to determine beneficial share ownership for purposes of (ii) above should it so choose or to rely on a certification from a broker-dealer who is a member of the FINRA as to the cost basis of Deposit Securities. The Distributor or the Fund shall notify a prospective purchaser of a Creation Unit and/or the Authorized Participant acting on the purchaser's behalf, of its rejection of the purchaser's order. The Fund, the Transfer Agent, and the Distributor are under no duty, however, to verify or give notification of any defects or irregularities in any written order or in the delivery of a Portfolio Deposit, nor shall any of them incur any liability for the failure to give any such notification.

#### Redemptions
**Fund Securities.** Shares may be redeemed only by Authorized Participants at their NAV per share next determined after receipt by the Distributor or its agent of a redemption request in proper form. The Fund will not redeem shares in amounts less than a Creation Unit. Beneficial owners of shares may sell their shares in the secondary market, but they must accumulate enough shares to constitute a Creation Unit to redeem those shares with the Fund. There can be no assurance that there will be sufficient liquidity in the public trading market at any time to permit assembly of a Creation Unit. Investors should expect to incur brokerage and other costs in connection with assembling a sufficient number of shares to constitute a redeemable Creation Unit. All redemptions are subject to the procedures contained in the applicable Participant Agreement.

Shareholders redeeming their shares generally will receive an in-kind transfer of specified instruments ("Fund Securities"). Fund Securities means the designated portfolio of securities that will be applicable to redemption requests received in proper form on that day. The Fund may determine, upon receiving a purchase order from an Authorized Participant, to use a basket of securities or cash that differs from the Deposit Securities or to substitute an amount of cash (i.e., a "cash-in-lieu" amount) to be added to the Cash Component to replace any Deposit Security. The Fund may also determine, upon receiving a redemption order from an Authorized Participant to have the redemption be made entirely or in part in cash.

The redemption proceeds for a Creation Unit generally consist of the Fund Securities, plus or minus an amount of cash denominated in U.S. dollars (the "Cash Redemption Amount"), representing an amount equal to the difference between the NAV of the shares being redeemed, as next determined after receipt of a request in proper form, and the total aggregate market value of the Fund Securities, less any applicable transaction fees, as discussed below. The Cash Redemption Amount is calculated in the same manner as the Cash Component. To the extent that the Fund Securities have a value greater than the NAV of the shares being redeemed, a Cash Redemption Amount payment equal to the differential is required to be paid by the redeeming shareholder.

The Fund, through the NSCC, makes available on each Business Day, immediately prior to the opening of business on the Exchange, the Fund Securities that will be applicable (subject to possible amendment or correction) to redemption requests received in proper form (as defined below) on that day, as well as the Cash Redemption Amount. Such Fund Securities and the corresponding Cash Redemption Amount may be accepted to effect redemptions of Creation Units of the Fund until such time as the next-announced composition of the Fund Securities and Cash Redemption Amount is made available.

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**Cash Redemptions.** The Fund (as set forth in the Prospectus) may pay out the proceeds of redemptions of Creation Units partially or principally for cash (or through any combination of cash and Fund Securities). In addition, an Authorized Participant may request a redemption in cash that the Fund may, in its sole discretion, permit. In either case, the Authorized Participant will receive a cash payment in an amount equal to the NAV of its shares next determined after a redemption request is received (less any redemption transaction fees imposed, as specified below).

Redemptions of shares will be subject to compliance with applicable federal and state securities laws and the Fund (whether or not it otherwise permits cash redemptions) reserves the right to redeem Creation Units for cash to the extent that the Fund could not lawfully deliver specific Fund Securities upon redemptions or could not do so without first registering the Fund Securities under such laws. An Authorized Participant that is not a "qualified institutional buyer," as such term is defined under Rule 144A of the Securities Act, will not be able to receive Fund Securities that are restricted securities eligible for resale under Rule 144. The Authorized Participant may request the redeeming beneficial owner of the shares to complete an order form or to enter into agreements with respect to such matters as compensating cash payment.

**Procedures for Redemption of Creation Units.** Orders must be transmitted by an Authorized Participant, in such form and by such transmission method acceptable to the Transfer Agent or Distributor, pursuant to procedures set forth in the Participant Agreement, and such procedures may change from time to time. Authorized Participants seeking to redeem shares may transfer Creation Units through the Clearing Process (see "Placing Redemption Requests Using the Clearing Process") or outside the Clearing Process through the facilities of DTC (see "Placing Redemption Requests Outside the Clearing Process").

Validly submitted orders to redeem Creation Units on each Business Day will be accepted until the Order Cut-Off Time on the Business Day that the order is placed. All Creation Unit orders must be received by the Distributor or its agent no later than the Order Cut-Off Time in order to receive the NAV determined on the Transmittal Date. When the Exchange closes earlier than normal, the Fund may require orders for Creation Units to be placed earlier in the Business Day.

A redemption request will be considered to be in "proper form" if (i) a duly completed request form is received by the Distributor or its agent from the Authorized Participant on behalf of itself or another redeeming investor at the specified Order Cut-Off Time, and (ii) arrangements satisfactory to the Fund are in place for the Authorized Participant to transfer or cause to be transferred to the Fund the Creation Unit of such Fund being redeemed on or before contractual settlement of the redemption request.

As discussed below, a redeeming investor will pay a transaction fee to offset the Fund's trading costs, operational processing costs, brokerage commissions and other similar costs incurred in transferring the Fund Securities from its account to the account of the redeeming investor. An entity redeeming shares in Creation Units outside the Clearing Process may be required to pay a higher transaction fee than would have been charged had the redemption been effected through the Clearing Process. A redeeming investor receiving cash-in-lieu of one or more Fund Securities may also be assessed a higher transaction fee on the cash-in-lieu portion. This higher Transaction Fee will be assessed in the same manner as the transaction fee incurred in purchasing Creation Units.

#### Redemption Requests
**Placing Redemption Requests Using the Clearing Process.** Requests to redeem Creation Units through the Clearing Process must be delivered through a Participating Party that has executed a Participant Agreement, in such form and by such transmission method acceptable to the Transfer Agent or Distributor, pursuant to procedures set forth in the Participant Agreement.

**Placing Redemption Requests Outside the Clearing Process.** Orders to redeem Creation Units outside the Clearing Process must be delivered through a DTC Participant that has executed a Participant Agreement. A DTC Participant who wishes to place a redemption order outside the Clearing Process need not be a Participating Party, but such orders must state that the DTC Participant is not using the Clearing Process and that redemption instead will be effected through a transfer of Fund shares directly through the DTC.

**Acceptance of Redemption Requests.** The Transfer Agent will deliver to the Authorized Participant a confirmation of acceptance of a request to redeem shares in Creation Units received in proper form. A redemption order is deemed to be irrevocable upon the delivery of the confirmation of acceptance.

The right of redemption may be suspended or the date of payment postponed (i) for any period during which the Exchange is closed (other than customary weekend and holiday closings); (ii) for any period during which trading on the Exchange is suspended or restricted; (iii) for any period during which an emergency exists as a result of which disposal of the shares of the Fund or determination of the Fund's NAV is not reasonably practicable; or (iv) in such other circumstances as is permitted by the SEC.

To the extent contemplated by a Participant Agreement, in the event an Authorized Participant has submitted a redemption request in proper form but is unable to transfer all or part of the Creation Unit to be redeemed to the Distributor, on behalf of the Fund, by the closing time of the regular trading session on the Exchange on the date such redemption request is submitted, the Distributor will nonetheless accept the redemption request in reliance on the undertaking by the Authorized Participant to deliver the missing shares as soon as possible, which undertaking shall be secured by the Authorized Participant's delivery and maintenance of collateral consisting of cash having a value at least 105% and up to 115% of the market value of the missing shares. The Fund may use such collateral at any time to purchase the missing shares, and will subject the Authorized Participant to liability for any shortfall between the cost of the Fund acquiring such shares and the value of the collateral, which may be sold by the Fund at such time, and in such manner, as the Fund may determine in its sole discretion.

**Using the Clearing Process.** An Authorized Participant that is a Participating Party is required to transfer to the Transfer Agent: (i) the requisite shares, and (ii) the Cash Redemption Amount, if any, to the Transfer Agent by means of the Fund's Clearing Process. In each case, the delivery must occur by the "regular way" settlement date (i.e., T+1). At that time, the Transfer Agent shall initiate procedures to transfer the Fund Securities and the Cash Redemption Amount, if any, through the Clearing Process so as to be received no later than on the "regular way" settlement date (i.e., T+1).

**Outside the Clearing Process-Domestic Equity Funds.** An Authorized Participant that is a DTC Participant making an redemption request outside the Clearing Process is required to transfer to the Transfer Agent: (i) the requisite shares through DTC, and (ii) the Cash Redemption Amount, if any, through the Federal Reserve Bank wire system. Such shares and Cash Redemption Amount must be received by the Transfer Agent by 11:00 a.m., Eastern time (the "DTC Cut-Off Time") on the Transmittal Date. At that time, the Transfer Agent shall initiate procedures to transfer the Fund Securities through DTC and the Cash Redemption Amount, if any, through the Federal Reserve Bank wire

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system so as to be received no later than T+1 (except as otherwise set forth in the Participant Agreement). The Fund reserves the right, upon notice to Authorized Participants pursuant to the respective Participant Agreement, to require orders to be placed earlier than the Closing Time.

**Outside the Clearing Process-International Equity Funds.** A redeeming Authorized Participant must maintain appropriate securities broker-dealer, bank or other custody arrangements to which account such in-kind redemption proceeds will be delivered. If neither the redeeming beneficial owner nor the Authorized Participant acting on its behalf has appropriate arrangements to take delivery of the Fund Securities in the applicable jurisdiction and it is not possible to make other such arrangements, or if it is not possible to effect deliveries of the Fund Securities in such jurisdiction, the beneficial owner will be required to receive its redemption proceeds in cash.

Arrangements satisfactory to the Fund must be in place for the Authorized Participant to transfer Creation Units through DTC on or before the settlement date. At that time, the Transfer Agent shall initiate procedures to transfer the Fund Securities through DTC and the custodial network and the Cash Redemption Amount, if any, through the Federal Reserve Bank wire system so as to be received no later than T+1. However, the schedule of holidays in certain countries may cause the delivery of in-kind redemption proceeds to take longer than T+1. In such cases, the local market settlement procedures will not commence until the end of the local holiday periods.

#### Creation and Redemption Transaction Fees
The Fund may recoup the settlement and other transaction costs by imposing a transaction fee on purchasing or redeeming Creation Units ("Transaction Fee"). Standard fixed Transaction Fees on creations and redemptions, payable to the Fund's custodian, may be imposed to cover operational, brokerage, and other transaction costs associated with the purchase or redemption of Creation Units. Authorized Participants will be required to pay a Transaction Fee for the purchase or redemption of a Creation Unit on a given day regardless of the number of Creation Units created or redeemed on that day. Transaction Fees may differ by Fund. The Fund reserves the right to adjust any Transaction Fee upon reasonable advance notice to the Authorized Participants. The standard fixed creation and redemption Transaction Fees may be reduced or waived on certain orders if the Fund's custodian determines to waive some or all of the costs associated with the order or another party, such as MFS, has agreed to pay such fee.

In addition, a variable Transaction Fee, payable to the Fund, may be imposed for cash purchases and redemptions, non-standard orders, and/or partial cash purchases or redemptions of Creation Units. The variable Transaction Fee is primarily designed to cover additional costs involved with buying or selling securities with cash, such as certain brokerage, tax, foreign exchange, execution, market impact and other costs and expenses, and to otherwise protect shareholders of the Fund. The Fund may determine to not charge a variable Transaction Fee on certain orders when MFS has determined that doing so is in the best interests of Fund shareholders, e.g., for creation and redemption orders that facilitate the rebalance of the Fund's portfolio in a more tax efficient manner than could be achieved without such order. The variable Transaction Fees will be negotiated between the Fund and the Authorized Participant and may be different for any given transaction, Business Day or Authorized Participant; however in no instance will such redemption Transaction Fee exceed 2% of the value of a Creation Unit. From time to time, MFS, in its sole discretion, may adjust the Fund's variable Transaction Fees or reimburse Authorized Participants for all or a portion of the creation or redemption Transaction Fees.

The standard Transaction Fees and maximum variable Transaction Fees as of the date of this SAI are set forth in the table below.

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| | | | | |
|:---|:---|:---|:---|:---|
| **Fund** | **Creation Transaction Fee** | **Creation Transaction Fee** | **Redemption Transaction Fee** | **Redemption Transaction Fee** |
|  | **Standard Fee** | **Maximum Variable Fee\*** | **Standard Fee** | **Maximum Variable Fee\*** |
| MFS Active Core Plus Bond ETF | $250 | 3% | $250 | 2% |
| MFS Active Growth ETF  | $200 | 3% | $200 | 2% |
| MFS Active Intermediate Muni Bond ETF | $250 | 3% | $250 | 2% |
| MFS Active International ETF | $500 | 3% | $500 | 2% |
| MFS Active International Value ETF | $400 | 3% | $400 | 2% |
| MFS Active Mid Cap ETF | $200 | 3% | $200 | 2% |
| MFS Active Value ETF  | $200 | 3% | $200 | 2% |
| MFS Blended Research Core Equity ETF | $200 | 3% | $200 | 2% |
| MFS Blended Research Emerging Markets Equity ETF | $500 | 3% | $500 | 2% |
| MFS Blended Research International Equity ETF | $1000 | 3% | $1000 | 2% |
| MFS Blended Research Small-Mid Cap ETF | $250 | 3% | $250 | 2% |

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\*As a percentage of the net asset value per Creation Unit.

Investors who use the services of a broker or other such intermediary may be charged a fee for such services. Investors are responsible for the costs of transferring Fund Securities to the Fund and from the Fund to their account or on their order.

#### Regular Holidays
The Fund may effect deliveries of Creation Units and Fund Securities on a basis other than T+1 in order to accommodate local holiday schedules, to account for different treatment among foreign and U.S. markets of dividend record dates and ex-dividend dates or under certain other circumstances. The ability of the Fund to effect in-kind creations and redemptions on a T+1 basis is subject, among other things, to the condition that, in the time between the order date and the delivery date, there are no days that are holidays in an applicable foreign market. For every occurrence of one or more such intervening holidays that are not holidays observed in the U.S., the redemption settlement cycle will be extended by the number of such intervening holidays. In addition to holidays, other unforeseeable closings in a foreign market also may prevent the Fund from delivering securities within the normal settlement period.

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The securities delivery cycles currently practicable for transferring Fund Securities to redeeming investors, coupled with foreign market holiday schedules, will require a delivery process longer than seven calendar days for some Funds in certain circumstances.

#### Seed Capital
MFS or its affiliates ("Selling Shareholders") may purchase shares of the Fund through a broker-dealer to "seed" Funds as they are launched, or may purchase Fund shares from other broker-dealers that have previously provided "seed" for Funds when they were launched, or otherwise in secondary market transactions. The Fund shares are being registered to permit the resale of these Fund shares from time to time after purchase. The Fund will not receive any of the proceeds from the resale by the Selling Shareholders of these Fund shares.

The Selling Shareholders intend to sell all or a portion of the Fund shares owned by them and offered hereby from time to time directly or through one or more broker-dealers. The Fund shares may be sold on any national securities exchange on which the Fund shares may be listed or quoted at the time of sale, in the over-the-counter market or in transactions other than on these exchanges or systems at fixed prices, at prevailing market prices at the time of the sale, at varying prices determined at the time of sale, or at negotiated prices. These sales may be effected in transactions, which may involve crosses or block transactions.

#### PORTFOLIO TRANSACTIONS AND BROKERAGE COMMISSIONS
Specific decisions to purchase or sell securities and other instruments for the Fund are made by persons affiliated with MFS. Any such person may serve other clients of MFS or any subsidiary of MFS in a similar capacity. When making trading decisions, MFS can select strategies or methods or directly select venues in order to seek best execution for client transactions. These decisions are influenced by a number of factors that are described more specifically below.

MFS seeks to obtain best execution for the Fund by executing transactions in such a manner that the Fund's total costs or proceeds in each transaction are the most favorable under the circumstances. Trading practices differ with respect to fixed income and equity securities, and the discussion of trading practices below will differ depending on security type. MFS deals with broker/dealers reasonably expected to provide the most favorable execution quality under the circumstances. The specific criteria used in selecting a broker/dealer will vary depending upon the nature of the transaction, the market in which it is executed, and the extent to which it is possible to select among multiple broker/dealers. MFS defines best execution as a process that seeks to execute portfolio transactions in a manner that MFS believes will provide the most favorable qualitative execution, including execution price and commission, spread, or other transaction costs, reasonably available under the circumstances. This process involves the evaluation of the trading process and execution results over extended periods. In seeking best execution, MFS takes into account several factors that it considers to be relevant, which include without limitation and in no particular order, the following: price; the size of the transaction; the nature of the market or the security; the amount of the commission or "spread"; the timing and potential for impact of the transaction, considering market prices and trends; the reputation, experience, and stability of the broker/dealer involved; the willingness of the broker/dealer to commit capital; the need for anonymity in the market; and the quality of services rendered by the broker/dealer in other transactions.

MFS places trades in various manners including through different broker/dealers, agency brokers, principal market-making dealers, smaller brokers and dealers, which may specialize in particular regions or asset classes, futures commission merchants, and OTC derivatives dealers (each, a "broker/dealer" for purposes of the discussion in this section) as well as via electronic trading platforms, including electronic communications networks (ECNs) (including, without limitation, multilateral trading facilities (MTFs), and alternative trading systems (ATSs)). These trading platforms often, in the case of equity transactions, execute transactions at a commission rate lower than that charged by a full-service broker/dealer.

In certain circumstances, such as a "buy-in" for failure to deliver, MFS is not able to select the broker/dealer who will transact to cover the failure. For example, if a Fund sells a security short and is unable to deliver the securities sold short, the broker/dealer through whom the Fund sold short must deliver securities purchased for cash, (i.e., effect a "buy-in," unless it knows that the Fund either is in the process of forwarding the securities to the broker/dealer or will do so as soon as possible without undue inconvenience or expense). Similarly, there can also be a failure to deliver in a long transaction and a resulting buy-in by the broker/dealer through whom the securities were sold. If the broker/dealer effects a buy-in, MFS will be unable to control the trading techniques, methods, venues, or any other aspect of the trade used by the broker/dealer.

Commission rates for equity securities and some derivatives will vary depending upon the trading methods, venues, and broker/dealers selected, as well as the market(s) in which the securities are traded and their relative liquidity. As noted above, MFS can utilize a variety of broker/dealers and trading venues and strategies in order to seek best execution for client transactions. MFS evaluates various factors in selecting broker/dealers to execute trades, including the ability to execute trades with a minimum of market impact, the speed and efficiency of executions, electronic trading capabilities, adequacy of capital, commitment of capital when necessary or desirable, market color provided to MFS, execution services, and accommodation of MFS' special needs. MFS may employ outside vendors to provide reports on the quality of broker/dealer executions. With respect to transactions in derivatives, MFS trades only with broker/dealers with whom it has legally-required or client-requested documentation in place. In some instances, MFS will be limited in its ability to select certain brokers to execute portfolio transactions due to the existence of an affiliated relationship or other regulatory restriction. MFS has an incentive to direct trades to counterparties for various reasons, including its business relationships with such counterparties, including but not limited to the following: some counterparties or their affiliates distribute shares of certain MFS Funds and/or act as an authorized participant or market maker for exchange-traded funds advised by MFS; MFS may invest account assets in securities issued by counterparties or their affiliates; a counterparty could be a client of MFS; a counterparty could serve as prime broker to an MFS Fund; a counterparty could provide financing or leverage for an MFS Fund; or certain affiliates of counterparties could provide banking services to members of MFS and its affiliates. However, MFS has policies and procedures it believes to be reasonably designed to mitigate such conflicts. MFS may employ outside vendors to provide reports on the quality of counterparty executions.

MFS utilizes a global investment platform built on the principle of close collaboration among members of its investment team, where research and investment ideas are shared. MFS investment professionals rely on their own internal research in making investment decisions, and, in addition, utilize external research provided by brokers or other research providers to help develop or refine investment ideas. External

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research is also used to help understand market consensus, sentiment, or perception, and identify relative inefficiencies more quickly and effectively.

MFS makes decisions on the procurement of external research separately and distinctly from decisions on the selection of brokers that execute transactions for the Fund. However, as permitted by Section 28(e) of the Securities Exchange Act of 1934, as amended ("Section 28(e)"), MFS may cause the Fund to pay a broker/dealer that provides "brokerage and research services" (as defined in Section 28(e)) an amount of commission for effecting a securities transaction for the Fund in excess of the amount other broker/dealers would have charged for the transaction if MFS determines in good faith that the greater commission is reasonable in relation to the value of the brokerage and research services provided viewed in terms of MFS' overall responsibilities to the Fund. The brokerage and research services received may be useful and of value to MFS in serving both the accounts that generated the commissions and other clients of MFS. Accordingly, not all of the research and brokerage services provided by brokers through which the Fund's securities transactions are effected may be used by MFS in connection with the Fund whose account generated the brokerage commissions.

MFS has undertaken to bear the costs of external research for all accounts it advises, either by paying for external research out of its own resources, or by voluntarily reimbursing clients from its own resources for excess commissions paid to obtain external research. For accounts subject to a regulatory prohibition on the payment of excess commissions for research, including accounts that are directly or indirectly subject to the Markets in Financial Instruments Directive in the European Union or United Kingdom ("MiFID II accounts"), MFS will pay for external research out of its own resources. For all other accounts, MFS operates client commission arrangements that generate commission "credits" for the purchase of external research from commissions on equity trades in a manner consistent with Section 28(e). Under these arrangements, MFS may cause a client to pay commissions in excess of what the broker/dealer or other brokers might have charged for certain equity transactions in recognition of brokerage and research services provided by the executing broker/dealer. MFS has voluntarily undertaken to reimburse clients from its own resources in an amount equal to all commission credits generated under these arrangements.

The research services obtained by MFS through the use of equity commission credits may include: access to corporate management; industry conferences; research field trips to visit corporate management and/or to tour manufacturing, production or distribution facilities; statistical, research and other factual information or services such as investment research reports; access to analysts; a small number of expert networks; reports or databases containing corporate, fundamental, technical, and political analyses; ESG-related information; portfolio modeling strategies; and economic research services, such as publications, chart services, and advice from economists concerning macroeconomics information, and analytical investment information about particular industries and corporations.

Through the use of eligible brokerage and research services acquired with commission credits, MFS initially avoids the additional expenses that it would incur if it developed comparable information through its own staff or if it purchased such services with its own resources. As a result, the Fund may pay more for its portfolio transactions in the first instance than if MFS had the Fund pay execution only rates. However, because MFS has voluntarily undertaken to reimburse clients from its own resources for commission credits generated from client brokerage, MFS ultimately assumes the additional expenses that it would incur if it purchased external research with its own resources.

Although MFS generally bears the costs of external research, MFS believes it generally does not pay, and therefore does not reimburse, clients with respect to research that is made available by a broker/dealer to all of its customers and that MFS considers to be of de minimis value, or for external research provided by executing brokers in fixed income transactions that incur mark-ups, mark-downs, and other fees rather than commissions. With respect to fixed income, MFS believes that executing brokers in fixed income transactions do not charge lower mark-ups, mark-downs, commission equivalents or other fees if clients forego research services. Consequently, MFS does not believe it pays higher mark-ups, mark-downs, commission equivalents or other fees to brokers on fixed income transactions than it would if it did not receive any research services from brokers. However, MiFID II generally considers external research to be an inducement and therefore MFS pays for certain categories of fixed income research received by certain affiliates of MFS out of its own resources. MFS may also execute purchase and sale transactions between the Fund and other funds or accounts managed by MFS or its affiliates (cross-trades). Cross-trade transactions entered into by the Fund are executed in accordance with applicable rules under the 1940 Act and related policies approved by the Board.

Brokerage commissions paid by the Fund for certain specified periods and information concerning purchases by the Fund of securities issued by its regular broker/dealers for its most recent fiscal year are set forth in APPENDIX J.

#### DISCLOSURE OF PORTFOLIO HOLDINGS AND OTHER FUND INFORMATION
The Fund may from time to time make available to the public information about the Fund on mfs.com, Facebook, X (formerly Twitter), YouTube, LinkedIn, and/or other social media.

The Fund has established a policy governing the disclosure of its portfolio holdings that is reasonably designed to protect the confidentiality of the Fund's non-public portfolio holdings and prevent inappropriate selective disclosure of such holdings. The Fund's Board has approved this policy and will be asked to approve any material amendments to this policy. Exceptions to this policy may be authorized by MFS' general counsel or a senior member of the MFS legal department acting under the supervision of MFS' general counsel (an ''Authorized Person'').

Neither MFS nor the Fund will receive any compensation or other consideration in connection with its disclosure of Fund portfolio holdings.

#### Public Disclosure of Portfolio Holdings
On each Business Day, before the opening of regular trading on the Exchange, the Fund will provide a full list of holdings on **www.mfs.com**. Additionally, a basket composition file, which includes the security names and share quantities to deliver in exchange for a Creation Unit, together with the amount of the Cash Component (if any), is publicly disseminated daily prior to the opening on the Exchange via the National Securities Clearing Corporation ("NSCC"), a clearing agency that is registered with the SEC. The basket and any Cash Component represents one Creation Unit of the Fund. The Fund's portfolio holdings may also be publicly disseminated through fee-based subscription services and to entities that publish or analyze such information in connection with the process of purchasing or redeeming Creation Units or trading Fund shares in the secondary market.

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In addition to the daily disclosure of a full list of holdings referenced above, other information concerning the Fund's portfolio holdings will generally be published on the Fund's website on a monthly basis. Such monthly portfolio holdings disclosure also includes short positions, if any. For certain MFS Funds that invest in other MFS Funds (other than money market funds), the top 10 holdings and full holdings are aggregated holdings, including Fund holdings and the holdings of non-money market funds in which the Fund invests. Portfolio holdings are determined based on the equivalent exposure of holdings. The equivalent exposure of a holding is a calculated amount that approximates the market value of an underlying asset that is expected to have the same impact on performance as the holding. The equivalent exposure of a derivative may be different than the market value of the derivative. For most other holdings, the equivalent exposure is the same as the market value of the holding. If approved by an Authorized Person, the Fund may from time to time make available on mfs.com and/or in a press release, information about the holdings of the Fund in a particular investment or investments as of a current date, including the equivalent exposure of such holding or holdings.

Except as may be required by applicable law, rules, or regulations, the Fund or MFS may suspend the posting of this information or modify the elements of this Web posting policy without notice to shareholders. Once posted, the monthly information referenced above will generally remain available on mfs.com until at least the date on which the Fund files a Form N-CSR or Form N-PORT for the period that includes the date as of which mfs.com information is current.

Certain registered investment companies that are advised by MFS and registered investment companies that are sub-advised by MFS or its affiliates are subject to different portfolio holdings disclosure policies that may permit public disclosure of portfolio holdings information in different forms and at different times, including disclosure of certain portfolio holdings each business day. In addition, separate account and unregistered product clients of MFS or its affiliates have same day access to their portfolio holdings, and prospective clients and their advisers have access to representative portfolio holdings and may grant same day access to these portfolio holdings to their clients, their investors, and/or to one or more affiliated and unaffiliated service providers. In addition, information about non-public portfolio holdings information attributable to other accounts managed or advised by MFS or its affiliates may be made available to one or more affiliated or unaffiliated service providers to those accounts. Some of these registered investment companies, sub-advised funds, separate accounts, unregistered products, and other accounts, all advised or sub-advised by MFS or its affiliates, have substantially similar, or in some cases nearly identical, portfolio holdings to certain MFS Funds ("Similarly Managed Investment Products"). A Similarly Managed Investment Product is not subject to the portfolio holdings disclosure policies of the Fund to which it is similar and may disclose its similar or nearly identical portfolio holdings information in different forms and at different times than such Fund.

#### Disclosure of Non-Public Portfolio Holdings
The Fund may, in certain cases, disclose to third parties its portfolio holdings which have not been made publicly available. Disclosure of non-public portfolio holdings to third parties may only be made if an Authorized Person determines that such disclosure is for a legitimate business purpose and is not impermissible under applicable law or regulation. In addition, the third party receiving the non-public portfolio holdings may, at the discretion of an Authorized Person, be required to agree in writing to keep the information confidential and/or agree not to trade directly or indirectly based on the information. Such agreements may not be required in circumstances such as where portfolio securities are disclosed to broker/dealers to obtain bids/prices or in interviews with the media. MFS will use reasonable efforts to monitor a recipient's use of non-public portfolio holdings provided under these agreements by means that may include contractual provisions, periodic due diligence, notices reminding a recipient of their obligations or other commercially reasonable means. The restrictions and obligations described in this paragraph do not apply to non-public portfolio holdings provided to MFS or its affiliates, or to the disclosure of portfolio holdings as may be required by applicable law, rules, or regulations.

With respect to non-public portfolio holdings provided to employees and contractors of MFS or its subsidiaries, employees and contractors of MFS and its subsidiaries are subject to corporate policies which prohibit use of portfolio holdings information for personal benefit or to benefit others.

In addition, to the extent that an Authorized Person determines that there is a potential conflict with respect to the disclosure of information that is not publicly available between the interests of the Fund's shareholders, on the one hand, and MFS, MFD or an affiliated person of MFS, MFD, or the Fund, on the other hand, the Authorized Person must inform MFS' conflicts officer of such potential conflict, and MFS' conflicts officer shall determine whether, in light of the potential conflict, disclosure is reasonable under the circumstances, and shall report such potential conflict of interest determinations to the Fund's Chief Compliance Officer and the Board of the Fund. MFS also reports to the Board of the Fund regarding the disclosure of information regarding the Fund that is not publicly available.

Subject to compliance with the standards set forth in the previous two paragraphs, non-public portfolio holdings may be disclosed in the following circumstances:

Employees of MFS or MFD (collectively "Fund representatives") disclose non-public portfolio holdings in connection with the day-to-day operations and management of the Fund. Full portfolio holdings are disclosed to the Fund's custodian, independent registered accounting firm, Authorized Participants, financial printers, regulatory authorities, and stock exchanges and other listing organizations. Certain Fund representatives are responsible for interacting with Authorized Participants and liquidity providers with respect to discussing custom basket proposals as described in the "Purchase and Redemption of Creation Units" section of this SAI. As part of these discussions, these Fund Representatives may also discuss with an Authorized Participant or liquidity provider the securities the Fund is willing to accept for a creation, and securities that the Fund will provide on a redemption, of Creation Units.

Portfolio holdings are disclosed to the Fund's pricing service vendors and broker/dealers when requesting bids for, or price quotations on, securities, and to other persons (including independent contractors) who provide systems or software support in connection with Fund operations, including accounting, compliance support, and pricing. Portfolio holdings may also be disclosed to persons assisting the Fund in the voting of proxies or in connection with litigation (or potential litigation) relating to Fund portfolio holdings, bankruptcy proceedings relating to Fund portfolio holdings, or a restructuring of a Fund holding where such disclosure is necessary to participate or explore participation in the restructuring of a holding (*e.g.*, as part of a bondholder group). In connection with managing the Fund, MFS may use analytical systems provided by third parties who may have access to Fund portfolio holdings. Non-public portfolio holdings may be disclosed in connection with other activities, such as to participants in in-kind purchases and redemptions of Fund shares, to service providers facilitating the distribution or analysis of portfolio holdings, and in other circumstances not described above.

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In addition, subject to such disclosure not being impermissible under applicable law or regulation, Fund representatives may disclose Fund portfolio holdings and related information, which may be based on non-public portfolio holdings, under the following circumstances (among others):

Fund representatives may provide oral or written information ("portfolio commentary") about the Fund, including how the Fund's investments are divided among various sectors, industries, countries, value and growth stocks, small-, mid-, and large-cap stocks, among stocks, bonds, currencies and cash, types of bonds, bond maturities, bond coupons, and bond credit quality ratings. This portfolio commentary may also include information on how these various weightings and factors contributed to Fund performance. Fund representatives may also express their views orally or in writing on one or more of the Fund's portfolio holdings or may state that the Fund has recently purchased or sold one or more holdings.

Fund representatives may also provide oral or written information ("statistical information") about various financial characteristics of the Fund or its underlying portfolio securities including alpha, beta, coefficient of determination, duration, maturity, information ratio, Sharpe ratio, earnings growth, payout ratio, price/book value, projected earnings growth, return on equity, standard deviation, tracking error, weighted average credit quality, market capitalization, percent debt to equity, price to cash flow, dividend yield or growth, default rate, portfolio turnover, and risk and style characteristics.

The portfolio commentary and statistical information may be provided to members of the press, shareholders in the Fund, persons considering investing in the Fund, or representatives of such shareholders or potential shareholders, such as fiduciaries of a 401(k) plan or a trust and their advisers, and the content and nature of the information provided to each of these persons may differ.

#### Ongoing Arrangements To Make Non-Public Portfolio Holdings Available
With authorization from an Authorized Person consistent with "Disclosure of Non-Public Portfolio Holdings" above, Fund representatives may disclose non-public Fund portfolio holdings to the recipients identified on APPENDIX K or permit the recipients identified in APPENDIX K to have access to non-public Fund portfolio holdings, on an ongoing basis. Certain third-party service providers of MFS or its subsidiaries have access to non-public Fund portfolio holdings only while performing their responsibilities within MFS operational or technology systems and subject to MFS corporate policies and procedures that, among other requirements, prohibit the use of portfolio holdings information for personal benefit or to benefit others. MFS does not consider such access by these service providers to constitute an ongoing arrangement to disclose non-public Fund portfolio holdings.

#### DETERMINATION OF NET ASSET VALUE
The net asset value per share of shares of the Fund is determined each day during which the Exchange is open for trading. (As of the date of this SAI, the NYSE is open for trading every weekday except in an emergency and for the following holidays (or the days on which they are observed): New Year's Day; Martin Luther King, Jr. Day; Presidents' Day; Good Friday; Memorial Day; Juneteenth; Independence Day; Labor Day; Thanksgiving Day; and Christmas Day.) This determination is made once each day as of the close of regular trading on the NYSE (generally, 4 p.m., Eastern time) by deducting the amount of the liabilities attributable to the class (or if no classes, to the Fund) from the value of the assets attributable to the class (or if no classes, to the Fund) and dividing the difference by the number of Fund shares outstanding for that class (or if no classes, for that Fund). Net asset value may be calculated earlier in emergency situations or as otherwise permitted by the SEC. In accordance with regulations for regulated investment companies, changes in portfolio holdings and number of shares outstanding are generally reflected in a Fund's net asset value the next business day after such change.

Open-end investment companies are generally valued at their net asset value per share. The underlying investments of open-end investment companies managed by MFS are valued as described below.

Equity securities, including restricted equity securities and equity securities sold short, are generally valued at the last sale or official closing price for such security on their primary market or exchange as provided by a third-party pricing service. Equity securities for which there were no sales reported that day are generally valued at the last quoted daily bid quotation on their primary market or exchange as provided by a third-party pricing service. Equity securities sold short, for which there were no sales reported that day, are generally valued at the last quoted daily ask quotation on their primary market or exchange as provided by a third-party pricing service.

Debt instruments and floating rate loans, including restricted debt instruments, are generally valued at an evaluated or composite bid for such instrument as provided by a third-party pricing service. Debt instruments sold short are generally valued at an evaluated or composite mean as provided by a third-party pricing service.

Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost for such instrument, which approximates market value.

Exchange-traded options generally are valued at the last sale or official closing price for such option on their primary exchange as provided by a third-party pricing service. Exchange-traded options for which there were no sales reported that day are generally valued at the last daily bid quotation for such option on their primary exchange as provided by a third-party pricing service. Options not traded on an exchange are generally valued at a broker/dealer bid quotation for such option. Foreign currency options are generally valued at a valuation for such option provided by a third-party pricing service.

Futures contracts generally are valued at last posted settlement price for such contract on their primary exchange as provided by a third-party pricing service. Futures contracts for which there were no trades that day for a particular position are generally valued at the closing bid quotation for such contract on their primary exchange, as provided by a third-party pricing service.

Forward foreign currency exchange contracts generally are valued at the mean of bid and asked prices for the time period interpolated from rates provided by a third-party pricing service for proximate time periods.

Swaps generally are valued at valuations provided by a third-party pricing service.

Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation.

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Values obtained from third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, spreads, and other market data.

The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.

#### Market Share Prices
Shares of the fund may be purchased and sold by investors in the secondary market through a financial intermediary at market price, which may vary throughout the trading day and may differ from NAV.

#### DESCRIPTION OF SHARES, VOTING RIGHTS, AND LIABILITIES
The Trust's Declaration of Trust, as amended or amended and restated from time to time, permits the Trust's Board to issue an unlimited number of full and fractional shares of beneficial interest (without par value) of each series, to divide or combine the shares of any series into a greater or lesser number of shares without thereby changing the proportionate beneficial interests in that series, and to divide such shares into classes. The Board has reserved the right to create and issue additional series and classes of shares.

Each shareholder of the Fund or class is entitled to one vote for each dollar of net asset value (number of shares owned times net asset value per share) of such Fund or class, on each matter on which the shareholder is entitled to vote. Each fractional dollar amount is entitled to a proportionate fractional vote. Except when a larger vote is required by applicable law, a majority of the voting power of the shares voted in person or by proxy on a matter will decide that matter and a plurality of the voting power of the shares voted in person or by proxy will elect a Trustee. Shareholders of all series of the Trust generally will vote together on all matters except when a particular matter affects only shareholders of a particular class or series or when applicable law requires shareholders to vote separately by series or class.

From time to time, MFS and/or its affiliates may invest "seed capital" in the Fund. These investments are generally intended to enable the Fund or a share class of the Fund to commence investment operations and/or achieve sufficient scale. MFS and/or its affiliates are under no obligation to maintain seed capital investments in a Fund and may redeem such investments in a Fund at any time and without prior notice.

Except in limited circumstances, the Board may, without any shareholder vote, amend or otherwise supplement the Trust's Declaration of Trust. The Trust, or any series or class thereof, may merge or consolidate or may sell, lease, or exchange all or substantially all of its assets with or without any shareholder vote to the extent permitted by law. The Trust, or any series or class, may reincorporate or reorganize without any shareholder vote. The Trust, any series of the Trust, or any class of any series, may be terminated at any time: 1) by a Majority Shareholder Vote; or 2) by the Board by written notice to the shareholders of the Trust, any series of the Trust, or any class of any series.

In the event of a liquidation of a Fund, shareholders of each class of the Fund are entitled to share pro rata in the net assets of the Fund available for distribution to such shareholders. Shares of a Fund have no preemptive rights and have dividend and conversion rights (if any) as described in the Prospectus for the Fund.

The Board may cause a shareholder's shares to be redeemed for any reason under terms set by the Board, including, 1) to protect the tax status of a Fund, 2) the failure of a shareholder to provide a tax identification number if required to do so, 3) the failure of a shareholder to pay when due for the purchase of shares issued to the shareholder, 4) in order to eliminate accounts whose values are less than a minimum amount established by the Board, 5) the failure of a shareholder to meet or maintain the qualifications for ownership of a particular class of shares, and 6) to eliminate ownership of shares by a particular shareholder when the Board determine that the particular shareholder's ownership is not in the best interests of the other shareholders of the applicable Fund (for example, in the case of an alleged market timer).

Under the Trust's Declaration of Trust, the Fund may convert to a master/feeder structure or a fund-of-funds structure without shareholder approval. In a master/feeder structure, a Fund invests all of its assets in another investment company with similar investment objectives and policies. In a fund-of-funds structure, a Fund invests all or a portion of its assets in multiple investment companies.

The Trust is an entity commonly known as a "Massachusetts business trust." Under Massachusetts law, shareholders of such a trust may, under certain circumstances, be held personally liable as partners for its obligations. However, the Trust's Declaration of Trust contains an express disclaimer of shareholder liability for acts or obligations of the Trust and provides for indemnification and reimbursement of expenses out of Trust property for any shareholder held personally liable for the obligations of the Trust. The Trust also maintains insurance for the protection of the Trust and its shareholders and the Board, officers, employees, and agents of the Trust covering possible tort and other liabilities. Thus, the risk of a shareholder incurring financial loss on account of shareholder liability is limited to circumstances in which both inadequate insurance existed and the Trust itself was unable to meet its obligations.

The Trust's Declaration of Trust further provides that obligations of the Trust are not binding upon the Board individually but only upon the property of the Trust, and that the Board will not be liable for any action or failure to act, but nothing in the Trust's Declaration of Trust or other agreement with a Trustee protects a Trustee against any liability to which he or she would otherwise be subject by reason of his or her willful misfeasance, bad faith, gross negligence, or reckless disregard of the duties involved in the conduct of his or her office.

The Trust's Declaration of Trust provides that shareholders may not bring suit on behalf of the Fund without first requesting that the Board bring such suit unless there would be irreparable injury to the Fund or if a majority of the Board (or a majority of the Board on any committee established to consider the merits of such action) have a personal financial interest in the action. This provision of the Declaration of Trust does not apply to claims arising under federal securities laws. Trustees are not considered to have a personal financial interest by virtue of being compensated for their services as Trustees or as trustees of MFS Funds with the same or an affiliated investment adviser or distributor.

The Trust's Declaration of Trust provides that by becoming a shareholder of the Fund, each shareholder shall be expressly held to have assented to and agreed to be bound by the provisions of the Trust's Declaration of Trust.

Under the Trust's By-Laws and Declaration of Trust, any claims asserted against or on behalf of the MFS Funds, including claims against Trustees and Officers, must be brought in state and federal courts located within the Commonwealth of Massachusetts.

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#### INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM(S) AND FINANCIAL STATEMENTS
Ernst & Young LLP, 200 Clarendon Street, Boston, MA 02116, serves as the independent registered public accounting firm for the Fund, providing audit and related services and assistance in connection with various SEC filings.

For each such Fund except MFS Active International Value ETF, MFS Blended Research Emerging Markets Equity ETF, and MFS Blended Research Small-Mid Cap ETF, the Fund's Financial Statements and Financial Highlights for the fiscal year ended February 28, 2026, are incorporated by reference into this SAI from the Fund's Annual Report to shareholders and have been audited by Ernst & Young LLP, an independent registered public accounting firm, as stated in its report, which is incorporated herein by reference, and have been so incorporated in reliance upon the report of such firm, given upon its authority as an expert in accounting and auditing. The MFS Active International Value ETF, MFS Blended Research Emerging Markets Equity ETF, and MFS Blended Research Small-Mid Cap ETF had not commenced operations as of the fiscal year ended February 28, 2026; therefore, no Financial Statements nor Financial Highlights for such Funds are incorporated by reference into this SAI.

For each Fund except MFS Active International Value ETF, MFS Blended Research Emerging Markets Equity ETF, and MFS Blended Research Small-Mid Cap ETF, the Fund's Financial Statements and Financial Highlights and the report of the independent registered public accounting firm are set forth in Item 7 of the Fund's annual Form N-CSR, which is available at the hyperlink noted below for the Trust.

[MFS Active Exchange Traded Funds Trust](http://www.sec.gov/ix?doc=/Archives/edgar/data/2018846/000119312526184598/8de9bef5ca2e2d3.htm)

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#### APPENDIX A - TRUSTEES AND OFFICERS – IDENTIFICATION AND BACKGROUND
The Trustees and Officers of the Trust, as of May 1, 2026, are listed below, together with their principal occupations during the past five years (their titles may have varied during that period). The address of each Trustee and Officer is 111 Huntington Avenue, Boston, Massachusetts 02199.

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **TRUSTEES** | **TRUSTEES** | **TRUSTEES** | **TRUSTEES** | **TRUSTEES** | **TRUSTEES** |
| **Name, Age** | **Position(s)**<br>**Held with**<br>**Fund** | **Trustee**<br>**Since<sup>(1)</sup>** | **Number of MFS**<br>**Funds Overseen**<br>**by the Trustee** | **Principal Occupations**<br>**During the Past**<br>**Five Years**  | **Other Directorships**<br>**During the Past**<br>**Five Years<sup>(2)</sup>** |
| **INTERESTED TRUSTEE** | **INTERESTED TRUSTEE** | **INTERESTED TRUSTEE** | **INTERESTED TRUSTEE** | **INTERESTED TRUSTEE** | **INTERESTED TRUSTEE** |
| Michael W. Roberge<sup>(3)</sup><br>age 59 | Trustee | January 2021 | 143 | Massachusetts Financial Services Company, Chair (since January 2021); Chief Executive Officer (until 2024); Director; Chairman of the Board (since January 2022) |  |
| **INDEPENDENT TRUSTEES** | **INDEPENDENT TRUSTEES** | **INDEPENDENT TRUSTEES** | **INDEPENDENT TRUSTEES** | **INDEPENDENT TRUSTEES** | **INDEPENDENT TRUSTEES** |
| John P. Kavanaugh <br>age 71 | Trustee and Chair of Trustees | January 2009 | 143 | Private investor |  |
| Steven E. Buller<br>age 74 | Trustee | February 2014 | 143 | Private investor |  |
| John A. Caroselli <br>age 71 | Trustee | March 2017 | 143 | Private investor; JC Global Advisors, LLC (management consulting), President (since 2015) |  |
| Maureen R. Goldfarb<br>age 71 | Trustee | January 2009 | 143 | Private investor |  |
| Peter D. Jones<br>age 70 | Trustee | January<br>2019 | 143 | Private investor  |  |
| James W. Kilman, Jr.<br>age 65 | Trustee | January<br>2019 | 143 | Burford Capital Limited (finance and investment management), Senior Advisor (since 2021), Chief Financial Officer (2019 – 2021); KielStrand Capital LLC (family office), Chief Executive Officer (since 2016) |  |
| Clarence Otis, Jr.<br>age 70 | Trustee | March 2017 | 143 | Private investor | VF Corporation, Director; Verizon Communications, Inc., Director; The Travelers Companies, Director |

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A - 1

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| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| **Name, Age** | **Position(s)**<br>**Held with**<br>**Fund** | **Trustee**<br>**Since<sup>(1)</sup>** | **Number of MFS**<br>**Funds Overseen**<br>**by the Trustee** | **Principal Occupations**<br>**During the Past**<br>**Five Years**  | **Principal Occupations**<br>**During the Past**<br>**Five Years**  | **Principal Occupations**<br>**During the Past**<br>**Five Years**  | **Other Directorships**<br>**During the Past**<br>**Five Years<sup>(2)</sup>** |
| Maryanne L. Roepke<br>age 70 | Trustee | May 2014 | 143 | Private investor | Private investor | Private investor |  |
| Paula E. Smith<br>age 63 | Trustee | January 2025 | 143 | Private investor; PricewaterhouseCoopers LLP (accounting), Partner (until June 2023) | Private investor; PricewaterhouseCoopers LLP (accounting), Partner (until June 2023) | Private investor; PricewaterhouseCoopers LLP (accounting), Partner (until June 2023) |  |
| Darrell A. Williams<br>age 66 | Trustee | January 2025 | 143 | DuSable Group, LLC (financial advisory and consulting services), Founder & Managing Member (since June 2023), Loop Capital LLC (investment banking, brokerage and advisory services), Managing Director (2020 – March 2023) | DuSable Group, LLC (financial advisory and consulting services), Founder & Managing Member (since June 2023), Loop Capital LLC (investment banking, brokerage and advisory services), Managing Director (2020 – March 2023) | DuSable Group, LLC (financial advisory and consulting services), Founder & Managing Member (since June 2023), Loop Capital LLC (investment banking, brokerage and advisory services), Managing Director (2020 – March 2023) |  |
| **OFFICERS** | **OFFICERS** | **OFFICERS** | **OFFICERS** | **OFFICERS** | **OFFICERS** | **OFFICERS** | **OFFICERS** |
| **Name, Age** | **Position(s)**<br>**Held with**<br>**Fund** | **Officer Since<sup>(1)</sup>** | **Number of MFS Funds for which the Person is an Officer** | **Number of MFS Funds for which the Person is an Officer** | **Principal Occupations**<br>**During the Past**<br>**Five Years**  | **Other Directorships**<br>**During the Past** <br>**Five Years<sup>(2)</sup>** | **Other Directorships**<br>**During the Past** <br>**Five Years<sup>(2)</sup>** |
| William T. Allen<sup>(3)</sup><br>age 58 | Deputy Assistant Treasurer | April 2024 | 143 | 143 | Massachusetts Financial Services Company, Vice President |  |  |
| Brian Balasco<sup>(3)</sup><br>age 48 | Assistant Treasurer | April 2024 | 143 | 143 | Massachusetts Financial Services Company, Vice President |  |  |
| Christopher R. Bohane<sup>(3)</sup> <br>age 52 | Assistant Secretary and Assistant Clerk | July 2005 | 143 | 143 | Massachusetts Financial Services Company, Senior Vice President and Deputy General Counsel |  |  |
| James L. Byrne<sup>(3)</sup> <br>age 50 | Assistant Treasurer | April 2024 | 143 | 143 | Massachusetts Financial Services Company, Vice President  |  |  |
| John W. Clark, Jr.<sup>(3)</sup><br>age 59 | Deputy Treasurer | April 2017 | 143 | 143 | Massachusetts Financial Services Company, Vice President |  |  |
| David L. DiLorenzo<sup>(3)</sup> <br>age 57 | President | July 2005 | 143 | 143 | Massachusetts Financial Services Company, Senior Vice President |  |  |
| Heidi W. Hardin<sup>(3)</sup><br>age 58 | Secretary and Clerk | April 2017 | 143 | 143 | Massachusetts Financial Services Company, Director (since January 2026), Executive Vice President, General Counsel and Secretary |  |  |

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A - 2

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Name, Age** | **Position(s)**<br>**Held with**<br>**Fund** | **Officer Since<sup>(1)</sup>** | **Number of MFS Funds for which the Person is an Officer** | **Principal Occupations**<br>**During the Past**<br>**Five Years** | **Other Directorships**<br>**During the Past**<br>**Five Years<sup>(2)</sup>** |
| Brian E. Langenfeld<sup>(3)</sup><br>age 53 | Assistant Secretary and Assistant Clerk | June 2006 | 143 | Massachusetts Financial Services Company, Vice President and Managing Counsel |  |
| Rosa E. Licea-Mailloux<sup>(3)</sup><br>age 49 | Chief Compliance Officer | March 2022 | 143 | Massachusetts Financial Services Company, Senior Vice President (since March 2025), Vice President (2018-2025), Director of Corporate Compliance (2018-2021); Senior Director Compliance (2021-2022); Senior Managing Director of North American Compliance & Chief Compliance Officer (since March 2022) |  |
| Amanda S. Mooradian<sup>(3)</sup><br>age 47 | Assistant <br>Secretary and Assistant Clerk | September 2018 | 143 | Massachusetts Financial Services Company, Vice President and Senior Counsel |  |
| Susan A. Pereira<sup>(3)</sup><br>age 55 | Assistant Secretary and Assistant Clerk | July 2005 | 143 | Massachusetts Financial Services Company, Vice President and Managing Counsel |  |
| Kasey L. Phillips<sup>(3)</sup><br>age 55 | Treasurer | September 2012 | 143 | Massachusetts Financial Services Company, Senior Vice President |  |
| Michael D. Refkofsky<sup>(3)</sup><br>age 46 | Assistant Treasurer | October 2025 | 143 | Massachusetts Financial Services Company, Vice President |  |
| Matthew A. Stowe<sup>(3)</sup><br>age 51 | Assistant Secretary and Assistant Clerk | October 2014 | 143 | Massachusetts Financial Services Company, Senior Vice President and Senior Managing Counsel |  |
| William B. Wilson<sup>(3)</sup><br>age 43 | Assistant Secretary and Assistant Clerk | October 2022 | 143 | Massachusetts Financial Services Company, Assistant Vice President and Senior Counsel |  |

---

 <sup>(1)</sup> Date first appointed to serve as Trustee/Officer of an MFS Fund. Each Trustee has served continuously since appointment unless indicated otherwise. From January 2012 through December 2016, Mr. DiLorenzo served as Treasurer of the Funds. From September 2012 through March 2024, Ms. Phillips served as Assistant Treasurer of the Funds. From April 2017 through March 2024, Mr. Clark served as Assistant Treasurer of the Funds.

 <sup>(2)</sup> Directorships or trusteeships of companies required to report to the SEC (i.e., "public companies").

<sup>(3)</sup> "Interested person" of the Trust within the meaning of the Investment Company Act of 1940 (referred to as the 1940 Act), which is the principal federal law governing investment companies like the Fund, as a result of position with MFS. The address of MFS is 111 Huntington Avenue, Boston, Massachusetts 02199.

Each Trustee has been elected by shareholders and each Trustee and Officer holds office until his or her successor is chosen and qualified or until his or her earlier death, resignation, retirement or removal. The Trust does not hold annual meetings for the purpose of electing Trustees, and Trustees are not elected for fixed terms. Under the terms of the Board's retirement policy, an Independent Trustee shall retire at the end of the calendar year in which he or she reaches the earlier of 75 years of age or 15 years of service on the Board (or, in the case of any Independent Trustee who joined the Board prior to 2015, 20 years of service on the Board).

The Interested Trustee and certain Officers hold comparable officer positions with certain affiliates of MFS.

A - 3

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The following provides an overview of the Board's process for identifying individuals for the pool from which trustee candidates are ultimately selected and the considerations that led the Board to conclude that each individual serving as a Trustee of the Trust should so serve. As part of this process, the Board works with the Nomination and Compensation Committee, which recommends qualified trustee candidates to the Board in the event that a position is vacated or created. Because the Trustees believe that a well-balanced and qualified board is an important component of a strong governance structure, the Board is committed to actively seeking individuals with diverse backgrounds, experience and perspectives, including women and underrepresented minority candidates, for the pool from which trustee candidates are selected. The current members of the Board have joined the Board at different points in time since 2009. Generally, no one factor was decisive in the original selection of an individual to join the Board. Among the factors the Board considered when concluding that an individual should serve on the Board were the following: (i) the individual's business and professional experience and accomplishments; (ii) the individual's ability to work effectively with the other members of the Board; (iii) the individual's prior experience, if any, serving on the boards of public companies (including, where relevant, other investment companies) and other complex enterprises and organizations; and (iv) how the individual's skills, experience and attributes would contribute to an appropriate mix of relevant skills, experience, and perspectives on the Board.

In respect of each current Trustee, the individual's substantial professional accomplishments and prior experience, including, in some cases, in fields related to the operations of the Fund, were a significant factor in the determination that the individual should serve as a Trustee of the Trusts. Following is a summary of each Trustee's professional experience and additional considerations that contributed to the Board's conclusion that an individual should serve on the Board:

#### Interested Trustee:

#### Michael W. Roberge
Mr. Roberge is Chairman of MFS (the MFS Funds' investment adviser) and Chairman of the MFS Board of Directors. As Chief Executive Officer of MFS from 2017 through 2024, Mr. Roberge set the strategic priorities for MFS, leading a team responsible for the investment, distribution, finance, human resources, legal and technology functions at the firm. He has substantial executive and investment management experience, having worked for MFS for over 25 years.

#### Independent Trustees:

#### Steven E. Buller, CPA
Mr. Buller has substantial accounting, investment management, and executive experience at firms within the investment management industry. Mr. Buller was the Chief Financial Officer and Managing Director of BlackRock, Inc. ("BlackRock"), where he oversaw BlackRock's tax department, internal audit and control functions, and the global corporate and investment company accounting policy. Prior to joining BlackRock, Mr. Buller was an auditor at Ernst & Young LLP for over 30 years, where he served as Global Director of Asset Management and as the audit partner for various investment company complexes. Mr. Buller was chairman of the Financial Accounting Standards Advisory Council, and was a member of the Standing Advisory Group of the Public Company Accounting Oversight Board (the PCAOB). He has also served on the board of BlackRock Finco UK, a privately-held company.

#### John A. Caroselli
Mr. Caroselli has substantial senior executive experience in the financial services industry. Mr. Caroselli is the president of JC Global Advisors, LLC, where he provides consulting services with specialization in strategy development and execution, merger integration, market growth plan design and organizational development. He served as Executive Vice President and Chief Development Officer of First Capital Corporation, Executive Vice President and Chief Strategy Officer of KeySpan Corporation, and Executive Vice President of Corporate Development of AXA Financial. Mr. Caroselli also held senior officer positions with Chase Manhattan Corporation, Chemical Bank, and Manufacturers Hanover Trust.

#### Maureen R. Goldfarb
Ms. Goldfarb has substantial executive and board experience at firms within the investment management industry. She was the Chief Executive Officer and Chairman of the Board of Trustees of the John Hancock Funds and an Executive Vice President of John Hancock Financial Services, Inc. Prior to joining John Hancock, Ms. Goldfarb was a Senior Vice President with Massachusetts Mutual Life Insurance Company. She also held various marketing, distribution, and portfolio management positions with other investment management firms. Ms. Goldfarb is a former member of the Board of Governors of the Investment Company Institute.

#### Peter D. Jones
Mr. Jones has substantial senior executive, accounting and investment management experience at firms within the investment management industry. Mr. Jones was the Chairman of Franklin Templeton Institutional, LLC and President of Franklin Templeton Distributors Inc. Mr. Jones formerly was the President of IDEX Distributors, Inc., which oversaw the formation and launch of IDEX Mutual Funds (now part of Transamerica Funds). Mr. Jones is a member of the Investment Advisory Council of the Florida State Board of Administration. Mr. Jones was formerly a CPA and served as Tax Manager at PricewaterhouseCoopers in Tampa, Florida and Atlanta, Georgia. Mr. Jones is also a member of the Investment Committee and a former trustee of the Florida State University Foundation.

#### John P. Kavanaugh
Mr. Kavanaugh has substantial executive, investment management, and board experience at firms within the investment management and mutual fund industry and is a Chartered Financial Analyst. He was the Chief Investment Officer of The Hanover Insurance Group, Inc., and the President and Chairman of Opus Investment Management, Inc., an investment adviser. Mr. Kavanaugh held research and portfolio management positions with Allmerica Financial and PruCapital, Inc. He previously served on the board of the Independent Directors Council, a unit of the Investment Company Institute which serves the mutual fund independent director community.

A - 4

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#### James W. Kilman, Jr.
Mr. Kilman has substantial senior executive and investment banking management experience at firms within the investment management industry. Mr. Kilman is currently a Senior Advisor to Burford Capital Limited, a global finance and investment management firm focusing on the law, and the Chief Executive Officer of KielStrand Capital LLC, a family office that makes and manages investments and oversees philanthropic activities. Previously, Mr. Kilman served as the Chief Financial Officer of Burford Capital Limited. Mr. Kilman formerly was the Vice Chairman, Co-Head of Diversified Financials Coverage in the Financial Institutions Banking Group at Morgan Stanley & Co. Prior to joining Morgan Stanley, Mr. Kilman was Managing Director in the Advisory Group within the Fixed Income Division's Mortgage Department at Goldman Sachs & Co. Mr. Kilman also held managerial and investment positions with ABN AMRO Inc. and PaineWebber Inc.

#### Clarence Otis, Jr.
Mr. Otis has substantial executive, financial, and board experience at publicly-traded and privately-held companies. Mr. Otis was the Chairman and Chief Executive Officer of Darden Restaurants, Inc., the world's largest full-service restaurant company, and where he previously served in other senior positions at Darden Restaurants, including Chief Financial Officer and Executive Vice President. Mr. Otis is a director of VF Corporation, Verizon Communications, Inc., and The Travelers Companies. He is a former director of the Federal Reserve Bank of Atlanta.

#### Maryanne L. Roepke
Ms. Roepke has substantial executive and compliance experience within the investment management industry. She was a Senior Vice President and the Chief Compliance Officer of American Century Investments, Inc., where she worked for over 30 years. Ms. Roepke served on the board of the American Century SICAV, a mutual fund complex. She is a former member of the Investment Company Institute's Chief Compliance Officer Committee and Risk Management Advisory Committee.

#### Paula E. Smith
Ms. Smith has substantial senior executive, operational and auditing and accounting experience in the financial services industry. Ms. Smith was an auditor at PricewaterhouseCoopers LLP ("PwC") for over 35 years where she was the lead engagement partner for a number of global financial services firms and served in various asset management industry, operational and human capital related leadership roles, including serving as UK Asset Management Leader. Prior to joining PwC, Ms. Smith worked in the mutual fund accounting department at State Street. She is a former board member of Nicsa, an asset management trade association.

#### Darrell A. Williams
Mr. Williams has substantial executive and board experience in the financial services industry. Mr. Williams is founder and Managing Member of DuSable Group, LLC, where he provides financial advisory and consulting services to clients. Prior to that, he served in various roles, including as Managing Director, at Loop Capital LLC, a full-service investment bank, brokerage and advisory firm that provides investment services to institutional clients. Mr. Williams is a former board member of Amalgamated Bank of Chicago and Intrado Inc., where he chaired the company's audit committee.

A - 5

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#### APPENDIX B - TRUSTEE COMPENSATION AND COMMITTEES
Pursuant to the Management Agreement, MFS (on behalf of the Fund) pays the Independent Trustees an annual fee plus a fee for each meeting attended. In addition, the Independent Trustees are reimbursed for their out-of-pocket expenses.

#### Trustee Compensation Table

---

| | | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Name and Position** | **Name and Position** | **Name and Position** | **Name and Position** | **Name and Position** | **Name and Position** | **Name and Position** | **Name and Position** | **Name and Position** | **Name and Position** | **Name and Position** | **Name and Position** |
|  | **Interested Trustee** | **Independent Trustees** | **Independent Trustees** | **Independent Trustees** | **Independent Trustees** | **Independent Trustees** | **Independent Trustees** | **Independent Trustees** | **Independent Trustees** | **Independent Trustees** | **Independent Trustees** | **Independent Trustees** |
| **Aggregate Compensation Paid by Fund** | Michael W. Roberge | Steven E. Buller | John A. Caroselli | Maureen R. Goldfarb | Peter D. Jones | John P. Kavanaugh | James W. Kilman Jr. | Clarence Otis Jr. | Maryanne L. Roepke | Paula E. Smith | Laurie J. Thomsen<sup>1</sup> | Darrell A. Williams |
| MFS Active Core Plus Bond ETF<sup>2</sup> | Not Applicable | $274  | $274  | $274  | $274  | $274  | $274  | $274  | $274  | $274  | $274  | $274  |
| MFS Active Growth ETF<sup>2</sup> | Not Applicable | $274  | $274  | $274  | $274  | $274  | $274  | $274  | $274  | $274  | $274  | $274  |
| MFS Active Intermediate Muni Bond ETF<sup>2</sup> | Not Applicable | $274  | $274  | $274  | $274  | $274  | $274  | $274  | $274  | $274  | $274  | $274  |
| MFS Active International ETF<sup>2</sup> | Not Applicable | $487  | $483  | $483  | $478  | $529  | $483  | $478  | $483  | $478  | $478  | $478  |
| MFS Active International Value ETF<sup>4</sup> | Not Applicable | $200 | $200 | $200 | $200 | $200 | $200 | $200 | $200 | $200 | $200 | $200 |
| MFS Active Mid Cap ETF<sup>3</sup> | Not Applicable | $91 | $91 | $91 | $91 | $91 | $91 | $91 | $91 | $91 | $91 | $91 |
| MFS Active Value ETF<sup>2</sup> | Not Applicable | $274  | $274  | $274  | $274  | $274  | $274  | $274  | $274  | $274  | $274  | $274  |
| MFS Blended Research Core Equity ETF<sup>3</sup> | Not Applicable | $69 | $69 | $69 | $68 | $74 | $69 | $68 | $69 | $68 | $68 | $68 |
| MFS Blended Research Emerging Markets Equity ETF<sup>4</sup> | Not Applicable | Not Applicable | Not Applicable | Not Applicable | Not Applicable | Not Applicable | Not Applicable | Not Applicable | Not Applicable | Not Applicable | Not Applicable | Not Applicable |
| MFS Blended Research International Equity ETF<sup>3</sup> | Not Applicable | $56 | $56 | $56 | $56 | $58 | $56 | $56 | $56 | $56 | $56 | $56 |
| MFS Blended Research Small-Mid Cap ETF<sup>4</sup> | Not Applicable | $200 | $200 | $200 | $200 | $200 | $200 | $200 | $200 | $200 | Not Applicable | $200 |
| **Retirement Benefits Accrued as Part of Fund Expense<sup>3</sup>** | Not Applicable | Not Applicable | Not Applicable | Not Applicable | Not Applicable | Not Applicable | Not Applicable | Not Applicable | Not Applicable | Not Applicable | Not Applicable | Not Applicable |
| **Total Trustee Compensation Paid by Fund and Fund Complex<sup>5</sup>** | Not Applicable | $510000  | $502500  | $494100  | $491500  | $591600  | $494100  | $491500  | $494100  | $483100  | $483100  | $491500  |

---

<sup>1</sup> Ms. Thomsen retired as Trustee of the Fund on December 31, 2025.

<sup>2</sup> For the fiscal year ended February 28, 2026.

<sup>3</sup> Estimated amounts for the fiscal year ended February 28, 2026.

<sup>4</sup> Estimated amounts for the fiscal year ended February 28, 2027.

<sup>5</sup> For the calendar year 2025 for 140 funds that paid Trustee compensation. Includes Trustee compensation paid by MFS on behalf of the Funds pursuant to an all-inclusive management fee.

B - 1

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#### Committees
As of May 1, 2026, the Board has established the following Committees:

---

| | | | |
|:---|:---|:---|:---|
| **Name of Committee** | **Number of Meetings**<br>**in Last Fiscal Year<sup>1</sup>** | **Functions** | **Current Members** |
| **AUDIT COMMITTEE** | 9 | Oversees the accounting and auditing procedures of the Fund and, among other duties, considers the selection of the independent accountants for the Fund and the scope of the audit, and considers the effect on the independence of those accountants of any non-audit services such accountants provide to the Fund and any audit or non-audit services such accountants provide to other MFS Funds, MFS and/or certain affiliates. The Committee is also responsible for establishing procedures for the receipt, retention, and treatment of complaints received by the Fund regarding accounting, internal accounting controls, or auditing matters and the confidential, anonymous submission of concerns regarding questionable fund accounting matters by officers of the Fund and employees of the Fund's investment adviser, administrator, principal underwriter, or any other provider of accounting-related services to the Fund. Reviews and evaluates the contractual arrangements of the Fund relating to custody and fund accounting services, and makes recommendations to the full Board on these matters. | Buller\*, Caroselli\*, Jones\*, Otis, Jr.\*, and Smith\* |
| **COMPLIANCE COMMITTEE** | 4 | Oversees the development and implementation of the Fund's regulatory and fiduciary compliance policies, procedures, and practices under the 1940 Act, and other applicable laws, as well as oversight of compliance policies of the Fund's investment adviser and certain other service providers as they relate to Fund activities. The Fund's Chief Compliance Officer assists the Committee in carrying out its responsibilities.  | Goldfarb\*, Kilman, Jr.\*, Roepke\*, and Williams\* |
| **CONTRACTS REVIEW COMMITTEE** | 4 | Requests, reviews, and considers the information deemed reasonably necessary to evaluate the terms of the investment advisory and principal underwriting agreements and the Plan of Distribution under Rule 12b-1 that each Fund proposes to renew or continue, and to make its recommendations to the full Board on these matters. | All Independent Trustees of the Board (Buller, Caroselli, Goldfarb, Jones, Kavanaugh, Kilman, Jr., Otis, Jr., Roepke, Smith, and Williams) |
| **NOMINATION AND COMPENSATION COMMITTEE** | 2 | Recommends qualified candidates to the Board in the event that a position is vacated or created. The Committee will consider recommendations by shareholders when a vacancy exists. Shareholders wishing to recommend candidates for Trustee for consideration by the Committee may do so by writing to the Fund's Secretary at the principal executive office of the Fund. Such recommendations must be accompanied by biographical and occupational data on the candidate (including whether the candidate would be an "interested person" of the Fund), a written consent by the candidate to be named as a nominee and to serve as Trustee if elected, record and ownership information for the recommending shareholder with respect to the Fund, and a description of any arrangements or understandings regarding recommendation of the candidate for consideration. The Committee is also responsible for making recommendations to the Board regarding any necessary standards or qualifications for service on the Board. The Committee also reviews and makes recommendations to the Board regarding compensation for the Independent Trustees. | All Independent Trustees of the Board (Buller, Caroselli, Goldfarb, Jones, Kavanaugh, Kilman, Jr., Otis, Jr., Roepke, Smith, and Williams) |

---

B - 2

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---

| | | | |
|:---|:---|:---|:---|
| **Name of Committee** | **Number of Meetings**<br>**in Last Fiscal Year<sup>1</sup>** | **Functions** | **Current Members** |
| **PORTFOLIO TRADING AND MARKETING REVIEW COMMITTEE** | 4 | Oversees the policies, procedures, and practices of the Fund with respect to brokerage transactions involving portfolio securities as those policies, procedures, and practices are carried out by MFS and its affiliates. The Committee also oversees the lending of portfolio securities, the Trust's borrowing and lending policies, and the administration of the Fund's proxy voting policies and procedures by MFS. The Committee also oversees the policies, procedures, and practices of the Applicable Fund Service Providers with respect to the selection and oversight of the Fund's counterparties in derivatives, repurchase and reverse repurchase agreements, and similar investment-related transactions. The Committee is also responsible for oversight of the Fund's derivatives risk management program. In addition, the Committee receives reports from MFS regarding the policies, procedures, and practices of MFS and its affiliates in connection with their marketing and distribution of shares of the Fund. | All Independent Trustees of the Board (Buller, Caroselli, Goldfarb, Jones, Kavanaugh, Kilman, Jr., Otis, Jr., Roepke, Smith, and Williams) |
| **PRICING COMMITTEE** | 4 | Oversees the determination of the value of the portfolio securities and other assets held by the Fund. The Committee delegates primary responsibility for carrying out these functions to MFS pursuant to the Fund's valuation policy and procedures approved by the Committee and adopted by the Board of Trustees. The Committee has designated MFS as the Fund's "valuation designee" whereby MFS is responsible for determining the fair values of portfolio securities and other assets held by the Fund for which market quotations are not readily available pursuant to MFS' fair valuation policy and procedures. MFS' fair valuation policy and procedures includes, among other things, methodologies and processes to be followed by MFS in determining the fair value of portfolio securities and other assets held by the Fund for which market quotations are not readily available. The Committee meets periodically with the members of MFS' internal valuation committee to review and assess MFS' fair valuation process and other pricing determinations made pursuant to the Fund's valuation policy and procedures and MFS' fair valuation policy and procedures, and to review the policies and procedures themselves. The Committee is also responsible for oversight of the Fund's liquidity risk management program. The Committee exercises the responsibilities of the Board under the Policy for Compliance with Rule 2a-7 approved by the Board on behalf of each Fund which holds itself out as a "money market fund" in accordance with Rule 2a-7 under the 1940 Act.  | Buller\*, Goldfarb\*, Kilman, Jr.\*, and Smith\* |
| **SERVICES CONTRACTS COMMITTEE** | 4 | Reviews and evaluates the contractual arrangements of the Fund relating to transfer agency, sub-transfer agency, administrative, and insurance services, and makes recommendations to the full Board on these matters.  | Caroselli\*, Jones\*, Otis, Jr.\*, Roepke\*, and Williams\* |

---

<sup>1</sup> For the fiscal year ended February 28, 2026. MFS Active Core Plus Bond ETF, MFS Active Growth ETF, MFS Active International ETF, MFS Active Intermediate Muni Bond ETF, and MFS Active Value ETF commenced operations on December 5, 2024. MFS Active Mid Cap ETF commenced operations on September 24, 2025. MFS Blended Research Core Equity ETF and MFS Blended Research International Equity ETF commenced operations on October 22, 2025. MFS Blended Research Emerging Markets Equity ETF commenced operations on March 5, 2026. MFS Active International Value ETF and MFS Blended Research Small-Mid Cap ETF had not commenced investment operations as of the date of this SAI.

\* Independent Trustees. Although Mr. Kavanaugh is not a member of all Committees of the Board, he is invited to and attends many of the Committees' meetings in his capacity as Chair of the Board.

B - 3

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#### APPENDIX C - SHARE OWNERSHIP

#### Ownership By Trustees and Officers
As of April 21, 2026, the Trustees and Officers of the Trust as a group owned of record less than 1% of the Fund's shares. The Board has adopted a policy requiring that each Independent Trustee shall have invested on an aggregate basis, within two years of membership on the Board, an amount equal to his or her prior calendar year's base retainer and meeting attendance fees in shares of the MFS Funds.

The following table shows the dollar range of equity securities beneficially owned by each current Trustee in the Fund and, on an aggregate basis, in the MFS Funds, as of December 31, 2025.

The following dollar ranges apply:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;N. None

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A. $1 – $10,000

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B. $10,001 – $50,000

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C. $50,001 – $100,000

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D. Over $100,000

---

| |
|:---|
| **Name and Position** |
| **Interested Trustee** |
| Michael W. Roberge<br> N |
| **Independent Trustees** |
| Steven E. Buller<br> N |
| John A. Caroselli <br> N |
| Maureen R. Goldfarb<br> D<br> N |
| Peter D. Jones<br> N |
| John P. Kavanaugh<br> C<br> N<br> B |
| James W. Kilman, Jr.<br> D<br> N |
| Clarence Otis, Jr.<br> N |
| Maryanne L. Roepke<br> N |
| Paula E. Smith<sup>1</sup> N<br> C |
| Darrell A. Williams<sup>1</sup> D<br> B |

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C - 1

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---

| |
|:---|
| **Name and Position** |
| **Interested Trustee** |
| Michael W. Roberge<br> N |
| **Independent Trustees** |
| Steven E. Buller<br> N |
| John A. Caroselli <br> N |
| Maureen R. Goldfarb<br> N<br> D |
| Peter D. Jones<br> N |
| John P. Kavanaugh<br> N<br> B |
| James W. Kilman, Jr.<br> N |
| Clarence Otis, Jr.<br> N |
| Maryanne L. Roepke<br> N |
| Paula E. Smith<sup>1</sup> N |
| Darrell A. Williams<sup>1</sup> N<br> B |

---

---

| |
|:---|
| **Name and Position** |
| **Interested Trustee** |
| Michael W. Roberge<br> N<br> D |
| **Independent Trustees** |
| Steven E. Buller<br> N<br> D |
| John A. Caroselli <br> N<br> D |
| Maureen R. Goldfarb<br> N<br> D |
| Peter D. Jones<br> N<br> D |
| John P. Kavanaugh<br> N<br> D |
| James W. Kilman, Jr.<br> N<br> D |
| Clarence Otis, Jr.<br> N<br> D |
| Maryanne L. Roepke<br> N<br> D |
| Paula E. Smith<sup>1</sup> N<br> D |
| Darrell A. Williams<sup>1</sup> N<br> D |

---

<sup>1</sup> Ms. Smith and Mr. Williams became Trustees of the Fund on January 1, 2025.

<sup>2</sup> Shares of MFS Active International Value ETF, MFS Blended Research Emerging Markets Equity ETF, and MFS Blended Research Small-Mid Cap ETF had not been offered for sale as of December 31, 2025.

#### Control Persons and Principal Holders of Securities
A shareholder who beneficially owns, directly or indirectly, more than 25% of the Fund's voting securities may be deemed to "control" (as defined in the 1940 Act) the Fund.

An Authorized Participant may hold of record more than 25% of the outstanding shares of the Fund. From time to time, Authorized Participants may be a beneficial and/or legal owner of the Fund, may be deemed to have control of the Fund and/or may be able to affect the outcome of matters presented for a vote of the shareholders of the Fund. Authorized Participants may appoint the Distributor to vote or abstain from voting such Authorized Participant's beneficially or legally owned shares of the Fund. In such cases, the Distributor shall mirror vote (or abstain from voting) such shares in the same proportion as all other beneficial owners of the Fund.

Although the Fund does not have the information concerning the beneficial ownership of shares held in the names of DTC Participants, the following identifies the name and percentage ownership of each DTC Participant that owned of record 5% or more of a Fund's outstanding shares as of April 21, 2026.

C - 2

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| | | |
|:---|:---|:---|
| **FUND NAME** | **PERCENTAGE<br>FUND**<br>**OWNERSHIP** | **NAME and ADDRESS of INVESTOR** |
| **MFS ACTIVE CORE PLUS BOND ETF** |  |  |
|  | 47.32 | LPL FINANCIAL LLC 4707 EXECUTIVE DR SAN DIEGO CA 92121-3091 |
|  | 12.97 | EDWARD D JONES & CO 12555 MANCHESTER RD SAINT LOUIS MO 63131-3710 |
|  | 11.72 | CHARLES SCHWAB & CO INC 211 MAIN ST SAN FRANCISCO CA 94105-1901 |
|  | 9.62 | RAYMOND JAMES 880 CARILLON PKWY ST PETERSBURG FL 33716-1102 |
|  | 6.38 | NATIONAL FINANCIAL SERVICES LLC 499 WASHINGTON BLVD JERSEY CITY, NJ 07310 |
|  | 5.01 | BROWN BROTHERS HARRIMAN & CO. 140 BROADWAY NEW YORK NY 10005-1101 |
| **MFS ACTIVE GROWTH ETF** |  |  |
|  | 31.28 | NATIONAL FINANCIAL SERVICES LLC 499 WASHINGTON BLVD JERSEY CITY, NJ 07310 |
|  | 30.29 | EDWARD D JONES & CO 12555 MANCHESTER RD SAINT LOUIS MO 63131-3710 |
|  | 24.36 | LPL FINANCIAL LLC 4707 EXECUTIVE DR SAN DIEGO CA 92121-3091 |
| **MFS ACTIVE INTERMEDIATE MUNI BOND ETF** |  |  |
|  | 40.79 | STATE STREET BANK & TRUST CO 1 CONGRESS ST STE 1 BOSTON MA 02114-2016 |
|  | 25.08 | LPL FINANCIAL LLC 4707 EXECUTIVE DR SAN DIEGO CA 92121-3091 |
|  | 10.63 | CHARLES SCHWAB & CO INC 211 MAIN ST SAN FRANCISCO CA 94105-1901 |
|  | 8.21 | EDWARD D JONES & CO 12555 MANCHESTER RD SAINT LOUIS MO 63131-3710 |
|  | 7.22 | RAYMOND JAMES 880 CARILLON PKWY ST PETERSBURG FL 33716-1102 |
| **MFS ACTIVE INTERNATIONAL ETF** |  |  |
|  | 18.84 | EDWARD D JONES & CO 12555 MANCHESTER RD SAINT LOUIS MO 63131-3710 |
|  | 16.83 | LPL FINANCIAL LLC 4707 EXECUTIVE DR SAN DIEGO CA 92121-3091 |
|  | 16.82 | RAYMOND JAMES 880 CARILLON PKWY ST PETERSBURG FL 33716-1102 |
|  | 12.28 | NATIONAL FINANCIAL SERVICES LLC 499 WASHINGTON BLVD JERSEY CITY, NJ 07310 |
|  | 12.18 | CHARLES SCHWAB & CO INC 211 MAIN ST SAN FRANCISCO CA 94105-1901 |
|  | 5.40 | PERSHING LLC 1 PERSHING PLZ JERSEY CITY NJ 07399-0002 |
| **MFS ACTIVE MID CAP ETF** |  |  |
|  | 90.27 | STATE STREET BANK & TRUST CO 1 CONGRESS ST STE 1 BOSTON MA 02114-2016 |
| **MFS ACTIVE VALUE ETF** |  |  |
|  | 42.56 | LPL FINANCIAL LLC 4707 EXECUTIVE DR SAN DIEGO CA 92121-3091 |
|  | 18.57 | EDWARD D JONES & CO 12555 MANCHESTER RD SAINT LOUIS MO 63131-3710 |
|  | 14.71 | NATIONAL FINANCIAL SERVICES LLC 499 WASHINGTON BLVD JERSEY CITY, NJ 07310 |
|  | 8.69 | PERSHING LLC 1 PERSHING PLZ JERSEY CITY NJ 07399-0002 |
| **MFS BLENDED RESEARCH CORE EQUITY ETF** |  |  |
|  | 90.43 | STATE STREET BANK & TRUST CO 1 CONGRESS ST STE 1 BOSTON MA 02114-2016 |
|  | 7.94 | NATIONAL FINANCIAL SERVICES LLC 499 WASHINGTON BLVD JERSEY CITY, NJ 07310 |

---

C - 3

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---

| | | |
|:---|:---|:---|
| **FUND NAME** | **PERCENTAGE<br>FUND**<br>**OWNERSHIP** | **NAME and ADDRESS of INVESTOR** |
| **MFS BLENDED RESEARCH EMERGING MARKETS EQUITY ETF** |  |  |
|  | 87.63 | STATE STREET BANK & TRUST CO 1 CONGRESS ST STE 1 BOSTON MA 02114-2016 |
|  | 8.51 | J.P. MORGAN SECURITIES LLC 4 CHASE METROTECH CTR BROOKLYN NY 11245-0003 |
| **MFS BLENDED RESEARCH INTERNATIONAL EQUITY ETF** |  |  |
|  | 35.18 | PERSHING LLC 1 PERSHING PLZ JERSEY CITY NJ 07399-0002 |
|  | 20.31 | CHARLES SCHWAB & CO INC 211 MAIN ST SAN FRANCISCO CA 94105-1901 |
|  | 19.92 | NATIONAL FINANCIAL SERVICES LLC 499 WASHINGTON BLVD JERSEY CITY, NJ 07310 |
|  | 16.93 | LPL FINANCIAL LLC 4707 EXECUTIVE DR SAN DIEGO CA 92121-3091 |
|  | 5.28 | WELLS FARGO SECURITIES LLC 550 SOUTH TRYON ST CHARLOTTE NC 28202 |

---

As of April 21, 2026, no shares of MFS Active International Value ETF and MFS Blended Research Small-Mid Cap ETF were owned because the Funds had not yet commenced operations.

C - 4

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#### APPENDIX D - PORTFOLIO MANAGER(S)

#### Compensation
MFS' philosophy is to align portfolio manager compensation with the goal to provide shareholders with long-term value through a collaborative investment process. Therefore, MFS uses long-term investment performance as well as contribution to the overall investment process and collaborative culture as key factors in determining portfolio manager compensation. In addition, MFS seeks to maintain total compensation programs that are competitive in the asset management industry in each geographic market where it has employees. MFS uses competitive compensation data to ensure that compensation practices are aligned with its goals of attracting, retaining, and motivating the highest-quality professionals.

MFS reviews portfolio manager compensation annually. In determining portfolio manager compensation, MFS uses quantitative means and qualitative means to help ensure a durable investment process. As of December 31, 2025, portfolio manager total cash compensation is a combination of base salary and performance bonus:

*Base Salary* – Base salary generally represents a smaller percentage of portfolio manager total cash compensation than performance bonus.

*Performance Bonus* – Generally, the performance bonus represents more than a majority of portfolio manager total cash compensation.

With respect to each portfolio manager except Messrs. Brett Fleishman, and Chris Sunderland and Mses. Laura Granger and Kate Mead, the performance bonus is based on a combination of quantitative and qualitative factors, generally with more weight given to the former and less weight given to the latter. The quantitative portion is primarily based on the pre-tax performance of accounts managed by the portfolio manager over a range of fixed-length time periods, intended to provide the ability to assess performance over time periods consistent with a full market cycle and a strategy's investment horizon. The fixed-length time periods include the portfolio manager's full tenure on each Fund/strategy and, when available, 10-, 5-, and 3-year periods. For portfolio managers who have served for less than three years, shorter-term periods, including the one-year period, will also be considered, as will performance in previous roles, if any, held at the firm. Emphasis is generally placed on longer performance periods when multiple performance periods are available. Performance is evaluated across the full set of strategies and portfolios managed by a given portfolio manager, relative to appropriate peer group universes and/or representative indices ("benchmarks"). As of December 31, 2025, the following benchmarks were used to measure the following portfolio managers' performance for the following Funds and/or MFS Funds managed in a substantially similar strategy to the portion of the Funds managed by the portfolio managers, unless otherwise indicated:

---

| | | |
|:---|:---|:---|
| **Fund** | &nbsp;&nbsp;**Portfolio Manager** | **Benchmark(s)** |
| MFS Active Core Plus Bond ETF | &nbsp;&nbsp;Philipp Burgener | &nbsp;&nbsp;&nbsp;&nbsp;Bloomberg U.S. Aggregate Bond Index |
| MFS Active Core Plus Bond ETF | &nbsp;&nbsp;Joshua Marston | &nbsp;&nbsp;&nbsp;&nbsp;Bloomberg U.S. Aggregate Bond Index |
| MFS Active Growth ETF | &nbsp;&nbsp;Timothy Dittmer | &nbsp;&nbsp;&nbsp;&nbsp;Russell 1000<sup>®</sup> Growth Index<br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper Large-Cap Growth Funds<br>&nbsp;&nbsp;&nbsp;&nbsp;Morningstar US Large Growth |
| MFS Active Growth ETF | &nbsp;&nbsp;Eric Fischman | &nbsp;&nbsp;&nbsp;&nbsp;Russell 1000<sup>®</sup> Growth Index<br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper Large-Cap Growth Funds<br> Morningstar US Large Growth |
| MFS Active Growth ETF | &nbsp;&nbsp;Bradford Mak | &nbsp;&nbsp;&nbsp;&nbsp;Russell 1000<sup>®</sup> Growth Index<br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper Large-Cap Growth Funds<br>&nbsp;&nbsp;&nbsp;&nbsp;Morningstar US Large Growth |
| MFS Active Intermediate Muni Bond ETF | &nbsp;&nbsp;Jason Kosty | &nbsp;&nbsp;&nbsp;&nbsp;Bloomberg Municipal 1-15 Year Index |
| MFS Active Intermediate Muni Bond ETF | &nbsp;&nbsp;Megan Poplowski | &nbsp;&nbsp;&nbsp;&nbsp;Bloomberg Municipal 1-15 Year Index |
| MFS Active Intermediate Muni Bond ETF | &nbsp;&nbsp;Daniel Streppa | &nbsp;&nbsp;&nbsp;&nbsp;Bloomberg Municipal 1-15 Year Index |

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D - 1

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---

| | | | |
|:---|:---|:---|:---|
| **Fund** | **Fund** | &nbsp;&nbsp;**Portfolio Manager** | **Benchmark(s)** |
| MFS Active International ETF | MFS Active International ETF | &nbsp;&nbsp;Filipe Benzinho | &nbsp;&nbsp;&nbsp;&nbsp;MSCI All Country World (ex-US) Index (net div)<br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper International Large-Cap Core Funds<br> Lipper International Funds <br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper International Large-Cap Growth Funds<br>&nbsp;&nbsp;&nbsp;&nbsp;Morningstar Foreign Large Blend |
| MFS Active International ETF | MFS Active International ETF | &nbsp;&nbsp;Daniel Ling | &nbsp;&nbsp;&nbsp;&nbsp;MSCI All Country World (ex-US) Index (net div)<br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper International Large-Cap Core Funds<br> Lipper International Funds <br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper International Large-Cap Growth Funds<br>&nbsp;&nbsp;&nbsp;&nbsp;Morningstar Foreign Large Blend |
| MFS Active International ETF | MFS Active International ETF | &nbsp;&nbsp;Harry Purcell | &nbsp;&nbsp;&nbsp;&nbsp;MSCI All Country World (ex-US) Index (net div)<br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper International Large-Cap Core Funds<br> Lipper International Funds <br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper International Large-Cap Growth Funds<br>&nbsp;&nbsp;&nbsp;&nbsp;Morningstar Foreign Large Blend |
| MFS Active International ETF | MFS Active International ETF | &nbsp;&nbsp;Jed Stocks | &nbsp;&nbsp;&nbsp;&nbsp;MSCI All Country World (ex-US) Index (net div)<br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper International Large-Cap Core Funds<br> Lipper International Funds <br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper International Large-Cap Growth Funds<br>&nbsp;&nbsp;&nbsp;&nbsp;Morningstar Foreign Large Blend |
| MFS Active International Value ETF | &nbsp;&nbsp;&nbsp;&nbsp;Steven Gorham<sup>3</sup> | &nbsp;&nbsp;&nbsp;&nbsp;Steven Gorham<sup>3</sup> | &nbsp;&nbsp;&nbsp;&nbsp;MSCI EAFE (Europe, Australasia, Far East) Value Index |
| MFS Active International Value ETF | &nbsp;&nbsp;&nbsp;&nbsp;David Shindler<sup>3</sup> | &nbsp;&nbsp;&nbsp;&nbsp;David Shindler<sup>3</sup> | &nbsp;&nbsp;&nbsp;&nbsp;MSCI EAFE (Europe, Australasia, Far East) Value Index |
| MFS Active International Value ETF | &nbsp;&nbsp;&nbsp;&nbsp;Jed Stocks<sup>3</sup> | &nbsp;&nbsp;&nbsp;&nbsp;Jed Stocks<sup>3</sup> | &nbsp;&nbsp;&nbsp;&nbsp;MSCI EAFE (Europe, Australasia, Far East) Value Index |
| MFS Active Mid Cap ETF | MFS Active Mid Cap ETF | &nbsp;&nbsp;Kevin Schmitz | &nbsp;&nbsp;&nbsp;&nbsp;Russell Midcap<sup>®</sup> Index<br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper Mid-Cap Core Funds<br> Morningstar US Fund Mid-Cap Blend |
| MFS Active Value ETF | MFS Active Value ETF | &nbsp;&nbsp;Katherine Cannan | &nbsp;&nbsp;&nbsp;&nbsp;Russell 1000<sup>®</sup> Value Index<br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper Large-Cap Value Funds<br> Morningstar US Large Value |
| MFS Active Value ETF | MFS Active Value ETF | &nbsp;&nbsp;Thomas Crowley | &nbsp;&nbsp;&nbsp;&nbsp;Russell 1000<sup>®</sup> Value Index<br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper Large-Cap Value Funds<br> Morningstar US Large Value |
| MFS Blended Research Core Equity ETF | MFS Blended Research Core Equity ETF | &nbsp;&nbsp;Matt Krummell | &nbsp;&nbsp;&nbsp;&nbsp;Standard & Poor's 500 Stock Index<br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper Large-Cap Core Funds<br>&nbsp;&nbsp;&nbsp;&nbsp;Morningstar US Large Blend |
| MFS Blended Research Core Equity ETF | MFS Blended Research Core Equity ETF | &nbsp;&nbsp;Nathan Bryant<sup>1</sup> | &nbsp;&nbsp;&nbsp;&nbsp;Standard & Poor's 500 Stock Index |
| MFS Blended Research Core Equity ETF | MFS Blended Research Core Equity ETF | &nbsp;&nbsp;Jonathan Sage | &nbsp;&nbsp;&nbsp;&nbsp;Standard & Poor's 500 Stock Index |
| MFS Blended Research Core Equity ETF | MFS Blended Research Core Equity ETF | &nbsp;&nbsp;Jed Stocks | &nbsp;&nbsp;&nbsp;&nbsp;Standard & Poor's 500 Stock Index |
| MFS Blended Research Core Equity ETF | MFS Blended Research Core Equity ETF | &nbsp;&nbsp;Jenney Zhang<sup>1</sup> | &nbsp;&nbsp;&nbsp;&nbsp;Standard & Poor's 500 Stock Index |
| MFS Blended Research Emerging Markets Equity ETF<sup>2</sup> | MFS Blended Research Emerging Markets Equity ETF<sup>2</sup> | &nbsp;&nbsp;Jed Stocks | &nbsp;&nbsp;&nbsp;&nbsp;MSCI Emerging Markets Index (net div)<br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper Emerging Markets Funds<br>&nbsp;&nbsp;&nbsp;&nbsp;Morningstar Diversified Emerging Markets |
| MFS Blended Research Emerging Markets Equity ETF<sup>2</sup> | MFS Blended Research Emerging Markets Equity ETF<sup>2</sup> | &nbsp;&nbsp;Nathan Bryant | &nbsp;&nbsp;&nbsp;&nbsp;MSCI Emerging Markets Index (net div)<br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper Emerging Markets Funds |
| MFS Blended Research Emerging Markets Equity ETF<sup>2</sup> | MFS Blended Research Emerging Markets Equity ETF<sup>2</sup> | &nbsp;&nbsp;Matt Krummell | &nbsp;&nbsp;&nbsp;&nbsp;MSCI Emerging Markets Index (net div)<br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper Emerging Markets Funds |
| MFS Blended Research Emerging Markets Equity ETF<sup>2</sup> | MFS Blended Research Emerging Markets Equity ETF<sup>2</sup> | &nbsp;&nbsp;Jonathan Sage | &nbsp;&nbsp;&nbsp;&nbsp;MSCI Emerging Markets Index (net div)<br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper Emerging Markets Funds |
| MFS Blended Research Emerging Markets Equity ETF<sup>2</sup> | MFS Blended Research Emerging Markets Equity ETF<sup>2</sup> | &nbsp;&nbsp;Jenney Zhang | &nbsp;&nbsp;&nbsp;&nbsp;MSCI Emerging Markets Index (net div)<br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper Emerging Markets Funds |

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D - 2

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| | | |
|:---|:---|:---|
| **Fund** | **Portfolio Manager** | **Benchmark(s)** |
| MFS Blended Research International Equity ETF<sup>2</sup> | &nbsp;&nbsp;Jed Stocks | &nbsp;&nbsp;&nbsp;&nbsp;MSCI All Country World (ex-US) Index<br>&nbsp;&nbsp;&nbsp;&nbsp;Lipper International Large-Cap Core Funds<br>&nbsp;&nbsp;&nbsp;&nbsp;Morningstar Foreign Large Blend |
| MFS Blended Research International Equity ETF<sup>2</sup> | &nbsp;&nbsp;Nathan Bryant<sup>1</sup> | &nbsp;&nbsp;&nbsp;&nbsp;MSCI All Country World (ex-US) Index |
| MFS Blended Research International Equity ETF<sup>2</sup> | &nbsp;&nbsp;Matt Krummell | &nbsp;&nbsp;&nbsp;&nbsp;MSCI All Country World (ex-US) Index |
| MFS Blended Research International Equity ETF<sup>2</sup> | &nbsp;&nbsp;Jonathan Sage | &nbsp;&nbsp;&nbsp;&nbsp;MSCI All Country World (ex-US) Index |
| MFS Blended Research International Equity ETF<sup>2</sup> | &nbsp;&nbsp;Jenney Zhang<sup>1</sup> | &nbsp;&nbsp;&nbsp;&nbsp;MSCI All Country World (ex-US) Index |
| MFS Blended Research Small-Mid Cap ETF | &nbsp;&nbsp;Jonathan Sage<sup>3</sup> | &nbsp;&nbsp;&nbsp;&nbsp;Russell 2500<sup>®</sup> Index |
| MFS Blended Research Small-Mid Cap ETF | &nbsp;&nbsp;Jenney Zhang<sup>3</sup> | &nbsp;&nbsp;&nbsp;&nbsp;Russell 2500<sup>®</sup> Index |
| MFS Blended Research Small-Mid Cap ETF | &nbsp;&nbsp;Nathan Bryant<sup>3</sup> | &nbsp;&nbsp;&nbsp;&nbsp;Russell 2500<sup>®</sup> Index |
| MFS Blended Research Small-Mid Cap ETF | &nbsp;&nbsp;Jed Stocks<sup>3</sup> | &nbsp;&nbsp;&nbsp;&nbsp;Russell 2500<sup>®</sup> Index |

---

<sup>1</sup> Became a portfolio manager of the Fund after the date referenced above; therefore, information is as of January 1, 2026.

<sup>2</sup> The Fund commenced operations after the date referenced above. MFS expects the benchmarks will be used to measure the portfolio managers' performance as of March 5, 2026.

<sup>3</sup> MFS expects the benchmarks will be used to measure the portfolio manager's performance as of May 19, 2026.

Benchmarks may include versions and components of indices, custom indices, and linked indices that combine performance of different indices for different portions of the time period, where appropriate.

The qualitative portion is based on the results of an annual internal peer review process (where portfolio managers are evaluated by other portfolio managers, analysts, and traders) and management's assessment of overall portfolio manager contributions to the MFS investment process and the client experience (distinct from fund and other account performance).

The performance bonus may be in the form of cash and/or a deferred cash award, at the discretion of management. A deferred cash award is issued for a cash value and becomes payable over a three-year vesting period if the portfolio manager remains in the continuous employ of MFS or its affiliates. During the vesting period, the value of the unfunded deferred cash award will fluctuate as though the portfolio manager had invested the cash value of the award in an MFS fund(s) selected by the portfolio manager. A selected fund may, but is not required to, be a fund that is managed by the portfolio manager.

With respect to Messrs. Brett Fleishman, and Chris Sunderland and Mses. Laura Granger and Kate Mead, the performance bonus is based on the results of an annual internal peer review process (conducted by other portfolio managers, analysts, traders, and non-investment personnel) and management's assessment of overall portfolio manager contribution to the client experience, the investment process and overall performance (distinct from fund and other account performance). The performance bonus may be in the form of cash and/or a deferred cash award, at the discretion of management. A deferred cash award is issued for a cash value and becomes payable over a three-year vesting period if the portfolio manager remains in the continuous employ of MFS or its affiliates. During the vesting period, the value of the unfunded deferred cash award will fluctuate as though the portfolio manager had invested the cash value of the award in an MFS fund(s) selected by the portfolio manager. A selected fund may, but is not required to, be a fund that is managed by the portfolio manager.

*MFS Equity Plan –* Portfolio managers also typically benefit from the opportunity to participate in the MFS Equity Plan. Equity interests are awarded by management, on a discretionary basis, taking into account tenure at MFS, contribution to the investment process, and other factors.

Finally, portfolio managers also participate in benefit plans (including a defined contribution plan and health and other insurance plans) and programs available generally to other employees of MFS. The percentage such benefits represent of any portfolio manager's compensation depends upon the length of the individual's tenure at MFS and salary level, as well as other factors.

#### Ownership of Fund Shares
The following table shows the dollar range of equity securities of the Fund beneficially owned by the Fund's portfolio manager(s) (including the value of any deferred cash award which is based on the performance of the Fund) as of the Fund's fiscal year ended February 28, 2025, unless otherwise indicated. The following dollar ranges apply:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;N. None

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A. $1 – $10,000

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B. $10,001 – $50,000

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C. $50,001 – $100,000

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D. $100,001 – $500,000

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;E. $500,001 – $1,000,000

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;F. Over $1,000,000

---

| | | |
|:---|:---|:---|
| **Fund** | **Portfolio Manager** | **Dollar Range of Equity Securities in the Fund** |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active Core Plus Bond ETF | Philipp Burgener | N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active Core Plus Bond ETF | Joshua Marston | N |

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D - 3

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| | |
|:---|:---|
| **Fund** | **Portfolio Manager** |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active Growth ETF | Timothy Dittmer<sup>1</sup> B |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active Growth ETF | Eric Fischman<br> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active Growth ETF | Bradford Mak<br> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active Growth ETF | Laura Granger<br> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active Intermediate Muni Bond ETF | Jason Kosty<br> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active Intermediate Muni Bond ETF | Megan Poplowski<br> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active Intermediate Muni Bond ETF | Daniel Streppa<br> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active International ETF | Filipe Benzinho<br> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active International ETF | Daniel Ling<br> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active International ETF | Harry Purcell<sup>1</sup> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active International ETF | Jed Stocks<br> B |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active International ETF | Brett Fleishman<br> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active International ETF | Chris Sunderland<br> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active International Value ETF | Steven Gorham<sup>5</sup> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active International Value ETF | David Shindler<sup>5</sup> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active International Value ETF | Jed Stocks<sup>5</sup> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active Mid Cap ETF | Kevin Schmitz<sup>2</sup> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active Value ETF | Katherine Cannan<br> C |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active Value ETF | Thomas Crowley<br> C |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Active Value ETF | Kate Mead<br> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Blended Research Core Equity ETF | Matt Krummell<sup>3</sup> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Blended Research Core Equity ETF | Nathan Bryant<sup>3</sup> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Blended Research Core Equity ETF | Jonathan Sage<sup>3</sup> B |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Blended Research Core Equity ETF | Jed Stocks<sup>3</sup> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Blended Research Core Equity ETF | Jenney Zhang<sup>3</sup> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Blended Research Emerging Markets Equity ETF | Jed Stocks<sup>4</sup> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Blended Research Emerging Markets Equity ETF | Nathan Bryant<sup>4</sup> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Blended Research Emerging Markets Equity ETF | Matt Krummell<sup>4</sup> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Blended Research Emerging Markets Equity ETF | Jonathan Sage<sup>4</sup> B |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Blended Research Emerging Markets Equity ETF | Jenney Zhang<sup>4</sup> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Blended Research International Equity ETF | Jed Stocks<sup>3</sup> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Blended Research International Equity ETF | Nathan Bryant<sup>3</sup> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Blended Research International Equity ETF | Matt Krummell<sup>3</sup> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Blended Research International Equity ETF | Jonathan Sage<sup>3</sup> B |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Blended Research International Equity ETF | Jenney Zhang<sup>3</sup> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Blended Research Small-Mid Cap ETF | Jonathan Sage<sup>5</sup> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Blended Research Small-Mid Cap ETF | Jenney Zhang<sup>5</sup> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Blended Research Small-Mid Cap ETF | Nathan Bryant<sup>5</sup> N |
| &nbsp;&nbsp;&nbsp;&nbsp;MFS Blended Research Small-Mid Cap ETF | Jed Stocks<sup>5</sup> N |

---

<sup>1</sup> Information is as of July 31, 2025.

<sup>2</sup> Information is as of August 26, 2025.

<sup>3</sup> Information is as of January 31, 2026.

<sup>4</sup> Information is as of March 31, 2026.

<sup>5</sup> As of the date of this SAI, no portfolio manager owned shares of MFS Active International Value ETF and MFS Blended Research Small-Mid Cap ETF because the Funds had not yet commenced operations.

#### Other Accounts
In addition to the Fund, each portfolio manager of the Fund is named as a portfolio manager of certain other accounts managed or sub-advised by MFS or an affiliate. Wholly-owned subsidiaries of registered investment companies are not considered separate accounts for purposes of number of accounts and total assets managed. The number and assets of these accounts were as follows as of the Fund's fiscal year ended February 28, 2025, unless otherwise indicated:

D - 4

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---

| | | | | |
|:---|:---|:---|:---|:---|
| **Fund** | **Portfolio Manager** | **Category of Accounts Managed** | **Number of Accounts** | **Total Assets** |
| MFS Active Core Plus Bond ETF | Joshua Marston | Registered Investment Companies<sup>1</sup> | 11 | $28.3 billion |
|  |  | Other Pooled Investment Vehicles | 9  | $4.0 billion |
|  |  | Other Accounts | 19 | $2.1 billion |
|  | Philipp Burgener | Registered Investment Companies<sup>1</sup> | 8 | $11.9 billion |
|  |  | Other Pooled Investment Vehicles | 6 | $2.1 billion |
|  |  | Other Accounts | 2 | $734.7 million |
| MFS Active Growth ETF | Bradford Mak | Registered Investment Companies<sup>1</sup> | 5 | $50.1 billion |
|  |  | Other Pooled Investment Vehicles | 3 | $4.8 billion |
|  |  | Other Accounts | 13 | $7.9 billion |
|  | Eric Fischman | Registered Investment Companies<sup>1</sup> | 9 | $66.3 billion |
|  |  | Other Pooled Investment Vehicles | 6 | $7.0 billion |
|  |  | Other Accounts | 25 | $9.7 billion |
|  | Timothy Dittmer<sup>2</sup> | Registered Investment Companies<sup>1</sup> | 4 | $49.9 billion |
|  |  | Other Pooled Investment Vehicles | 2 | $5.3 billion |
|  |  | Other Accounts | 10 | $7.0 billion |
|  | Laura Granger | Registered Investment Companies<sup>1</sup> | 0 | Not Applicable |
|  | Laura Granger | Other Pooled Investment Vehicles | 0 | Not Applicable |
|  | Laura Granger | Other Accounts | 0 | Not Applicable |
| MFS Active Intermediate Muni Bond ETF | Dan Streppa | Registered Investment Companies<sup>1</sup> | 1 | $38.6 million |
|  |  | Other Pooled Investment Vehicles | 0 | Not Applicable |
|  |  | Other Accounts | 0 | Not Applicable |
|  | Jason Kosty | Registered Investment Companies<sup>1</sup> | 10 | $16.2 billion |
|  |  | Other Pooled Investment Vehicles | 1 | $117.1 million |
|  |  | Other Accounts | 4 | $622.3 million |
|  | Megan Poplowski | Registered Investment Companies<sup>1</sup> | 6 | $15.4 billion |
|  |  | Other Pooled Investment Vehicles | 1 | $117.1 million |
|  |  | Other Accounts | 4 | $622.3 million |

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D - 5

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---

| | | | | |
|:---|:---|:---|:---|:---|
| **Fund** | **Portfolio Manager** | **Category of Accounts Managed** | **Number of Accounts** | **Total Assets** |
| MFS Active International ETF | Brett Fleishman | Registered Investment Companies<sup>1</sup> | 0 | Not Applicable |
|  |  | Other Pooled Investment Vehicles | 0 | Not Applicable |
|  |  | Other Accounts | 0 | Not Applicable |
|  | Chris Sunderland | Registered Investment Companies<sup>1</sup> | 0 | Not Applicable |
|  |  | Other Pooled Investment Vehicles | 0 | Not Applicable |
|  |  | Other Accounts | 0 | Not Applicable |
|  | Daniel Ling | Registered Investment Companies<sup>1</sup> | 8 | $28.3 billion |
|  |  | Other Pooled Investment Vehicles | 5 | $10.7 billion |
|  |  | Other Accounts | 29 | $8.3 billion |
|  | Filipe Benzinho | Registered Investment Companies<sup>1</sup> | 8 | $28.3 billion |
|  |  | Other Pooled Investment Vehicles | 5 | $10.7 billion |
|  |  | Other Accounts | 29 | $8.3 billion |
|  | Jed Stocks | Registered Investment Companies<sup>1</sup> | 15 | $7.4 billion |
|  | Jed Stocks | Other Pooled Investment Vehicles | 13 | $2.6 billion |
|  | Jed Stocks | Other Accounts | 28 | $7.7 billion |
|  | Harry Purcell<sup>2</sup> | Registered Investment Companies<sup>1</sup> | 8 | $32.4 billion |
|  | Harry Purcell<sup>2</sup> | Other Pooled Investment Vehicles | 5 | $12.2 billion |
|  | Harry Purcell<sup>2</sup> | Other Accounts | 28 | $8.2 billion |
| MFS Active International Value ETF<sup>7</sup> | Steven Gorham<sup>6</sup> | Registered Investment Companies<sup>3</sup> | 7 | $19.4 billion |
| MFS Active International Value ETF<sup>7</sup> | Steven Gorham<sup>6</sup> | Other Pooled Investment Vehicles | 6 | $2.4 billion |
| MFS Active International Value ETF<sup>7</sup> | Steven Gorham<sup>6</sup> | Other Accounts | 17 | $11.9 billion |
| MFS Active International Value ETF<sup>7</sup> | David Shindler<sup>6</sup> | Registered Investment Companies<sup>3</sup> | 3 | $8.8 billion |
| MFS Active International Value ETF<sup>7</sup> | David Shindler<sup>6</sup> | Other Pooled Investment Vehicles | 6 | $2.4 billion |
| MFS Active International Value ETF<sup>7</sup> | David Shindler<sup>6</sup> | Other Accounts | 29 | $12.2 billion |
| MFS Active International Value ETF<sup>7</sup> | Jed Stocks<sup>6</sup> | Registered Investment Companies<sup>3</sup> | 19 | $18.9 billion |
| MFS Active International Value ETF<sup>7</sup> | Jed Stocks<sup>6</sup> | Other Pooled Investment Vehicles | 19 | $4.7 billion |
| MFS Active International Value ETF<sup>7</sup> | Jed Stocks<sup>6</sup> | Other Accounts | 41 | $11.7 billion |
| MFS Active Mid Cap ETF | Kevin Schmitz<sup>2</sup> | Registered Investment Companies<sup>3</sup> | 4 | $19.8 billion |
|  |  | Other Pooled Investment Vehicles | 1 | $2.5 billion |
|  |  | Other Accounts | 6 | $740.5 million |
| MFS Active Value ETF | Katie Cannan | Registered Investment Companies<sup>1</sup> | 10 | $70.1 billion |
|  |  | Other Pooled Investment Vehicles | 2 | $7.4 billion |
|  |  | Other Accounts | 16 | $7.5 billion |
|  | Thomas Crowley | Registered Investment Companies<sup>1</sup> | 10 | $70.1 billion |
|  |  | Other Pooled Investment Vehicles | 2 | $7.4 billion |
|  |  | Other Accounts | 16 | $7.5 billion |
|  | Kate Mead | Registered Investment Companies<sup>1</sup> | 0 | Not Applicable |
|  |  | Other Pooled Investment Vehicles | 0 | Not Applicable |
|  |  | Other Accounts | 0 | Not Applicable |
| MFS Blended Research Core Equity ETF | Matt Krummell<sup>4</sup> | Registered Investment Companies<sup>1</sup> | 16 | $11.4 billion |
|  |  | Other Pooled Investment Vehicles | 17 | $4.3 billion |
|  |  | Other Accounts | 30 | $10.5 billion |
|  | Nathan Bryant<sup>4</sup> | Registered Investment Companies<sup>1</sup> | 16 | $11.4 billion |
|  |  | Other Pooled Investment Vehicles | 17 | $4.3 billion |
|  |  | Other Accounts | 30 | $10.5 billion |

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| | | | | |
|:---|:---|:---|:---|:---|
| **Fund** | **Portfolio Manager** | **Category of Accounts Managed** | **Number of Accounts** | **Total Assets** |
|  | Jonathan Sage<sup>4</sup> | Registered Investment Companies<sup>1</sup> | 19 | $14.9 billion |
|  |  | Other Pooled Investment Vehicles | 19 | $5.6 billion |
|  |  | Other Accounts | 36 | $14.1 billion |
|  | Jed Stocks<sup>4</sup> | Registered Investment Companies<sup>1</sup> | 17 | $12.2 billion |
|  | Jed Stocks<sup>4</sup> | Other Pooled Investment Vehicles | 17 | $4.3 billion |
| | Jed Stocks<sup>4</sup> | Other Accounts | 37 | $10.6 billion |
| | Jenney Zhang<sup>4</sup> | Registered Investment Companies<sup>1</sup> | 16 | $11.4 billion |
| |  | Other Pooled Investment Vehicles | 17 | $4.3 billion |
| |  | Other Accounts | 30 | $10.5 billion |
| MFS Blended Research Emerging Markets Equity ETF<sup>5</sup> | Jed Stocks | Registered Investment Companies<sup>1</sup> | 18 | $12.8 billion |
| MFS Blended Research Emerging Markets Equity ETF<sup>5</sup> | Jed Stocks | Other Pooled Investment Vehicles | 19 | $4.4 billion |
| MFS Blended Research Emerging Markets Equity ETF<sup>5</sup> | Jed Stocks | Other Accounts | 38 | $10.4 billion |
| MFS Blended Research Emerging Markets Equity ETF<sup>5</sup> | Nathan Bryant<br>_<br>_ | Registered Investment Companies<sup>1</sup> | 17 | $11.9 billion |
| MFS Blended Research Emerging Markets Equity ETF<sup>5</sup> | Nathan Bryant<br>_<br>_ | Other Pooled Investment Vehicles | 20 | $4.4 billion |
| MFS Blended Research Emerging Markets Equity ETF<sup>5</sup> | Nathan Bryant<br>_<br>_ | Other Accounts | 31 | $10.3 billion |
| MFS Blended Research Emerging Markets Equity ETF<sup>5</sup> | Matt Krummell | Registered Investment Companies<sup>1</sup> | 17 | $11.9 billion |
| MFS Blended Research Emerging Markets Equity ETF<sup>5</sup> | Matt Krummell | Other Pooled Investment Vehicles | 20 | $4.4 billion |
| MFS Blended Research Emerging Markets Equity ETF<sup>5</sup> | Matt Krummell | Other Accounts | 30 | $10.3 billion |
| MFS Blended Research Emerging Markets Equity ETF<sup>5</sup> | Jonathan Sage | Registered Investment Companies<sup>1</sup> | 20 | $15.3 billion |
| MFS Blended Research Emerging Markets Equity ETF<sup>5</sup> | _ | Other Pooled Investment Vehicles | 22 | $5.7 billion |
| MFS Blended Research Emerging Markets Equity ETF<sup>5</sup> | _ | Other Accounts | 37 | $13.7 billion |
| MFS Blended Research Emerging Markets Equity ETF<sup>5</sup> | Jenney Zhang<br>_<br>_ | Registered Investment Companies<sup>1</sup> | 17 | $11.9 billion |
| MFS Blended Research Emerging Markets Equity ETF<sup>5</sup> | Jenney Zhang<br>_<br>_ | Other Pooled Investment Vehicles | 20 | $4.4 billion |
| MFS Blended Research Emerging Markets Equity ETF<sup>5</sup> | Jenney Zhang<br>_<br>_ | Other Accounts | 31 | $10.3 billion |

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| | | | | |
|:---|:---|:---|:---|:---|
|  | **Fund** | **Category of Accounts Managed** | **Number of Accounts** | **Total Assets** |
| MFS Blended Research International  | MFS Blended Research International <br> Jed Stocks<sup>4</sup> | Registered Investment Companies<sup>1</sup> | 17 | $12.2 billion |
| Equity ETF | Equity ETF | Other Pooled Investment Vehicles | 17 | $4.3 billion |
|  |  | Other Accounts | 37 | $10.6 billion |
|  | Nathan Bryant<sup>4</sup> | Registered Investment Companies<sup>1</sup> | 16 | $11.4 billion |
|  |  | Other Pooled Investment Vehicles | 17 | $4.3 billion |
|  |  | Other Accounts | 30 | $10.5 billion |
|  | Matt Krummell<sup>4</sup> | Registered Investment Companies<sup>1</sup> | 16 | $11.4 billion |
|  |  | Other Pooled Investment Vehicles | 17 | $4.3 billion |
|  |  | Other Accounts | 30 | $10.5 billion |
|  |  | Registered Investment Companies<sup>1</sup> | 19 | $14.9 billion |
|  |  | Other Pooled Investment Vehicles | 19 | $5.6 billion |
|  |  | Other Accounts | 36 | $14.1 billion |
|  | Jenney Zhang<sup>4</sup> | Registered Investment Companies<sup>1</sup> | 16 | $11.4 billion |
|  |  | Other Pooled Investment Vehicles | 17 | $4.3 billion |
|  |  | Other Accounts | 30 | $10.5 billion |
| MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | Registered Investment Companies<sup>3</sup> | 21 | $17.2 billion |
| MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | Other Pooled Investment Vehicles | 22 | $6.0 billion |
| MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | Other Accounts | 38 | $14.6 billion |
| MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | Registered Investment Companies<sup>3</sup> | 18 | $13.9 billion |
| MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | Other Pooled Investment Vehicles | 20 | $4.7 billion |
| MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | Other Accounts | 32 | $11.0 billion |
| MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | Registered Investment Companies<sup>3</sup> | 18 | $13.9 billion |
| MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | Other Pooled Investment Vehicles | 20 | $4.7 billion |
| MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | Other Accounts | 32 | $11.0 billion |
| MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | Registered Investment Companies<sup>3</sup> | 19 | $14.9 billion |
| MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | Other Pooled Investment Vehicles | 19 | $4.7 billion |
| MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | MFS Blended Research Small-Mid Cap ETF<sup>7</sup> | Other Accounts | 41 | $11.7 billion |
| <sup>1</sup> | Includes the Fund. | Includes the Fund. | Includes the Fund. | Includes the Fund. |
| <sup>2</sup> | Account information is as of September 2, 2025. | Account information is as of September 2, 2025. | Account information is as of September 2, 2025. | Account information is as of September 2, 2025. |
| <sup>3</sup> | Does not include the Fund. | Does not include the Fund. | Does not include the Fund. | Does not include the Fund. |
| <sup>4</sup> | Account information is as of January 31, 2026. | Account information is as of January 31, 2026. | Account information is as of January 31, 2026. | Account information is as of January 31, 2026. |
| <sup>5</sup> | Account information is as of April 1, 2026. | Account information is as of April 1, 2026. | Account information is as of April 1, 2026. | Account information is as of April 1, 2026. |
| <sup>6</sup> | Account information is as of May 1, 2026. | Account information is as of May 1, 2026. | Account information is as of May 1, 2026. | Account information is as of May 1, 2026. |
| <sup>7</sup> | Fund has not commenced operations as of the date of this SAI. | Fund has not commenced operations as of the date of this SAI. | Fund has not commenced operations as of the date of this SAI. | Fund has not commenced operations as of the date of this SAI. |

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Advisory fees were not based upon performance of any of the accounts identified in the table above.

#### Potential Conflicts of Interest
MFS seeks to identify potential conflicts of interest resulting from a portfolio manager's management of both the Fund and other accounts, and has adopted policies and procedures reasonably designed to address such potential conflicts. There is no guarantee that MFS will be successful in identifying or mitigating conflicts of interest.

The management of multiple funds and accounts (including accounts in which MFS, an affiliate, an employee, an officer, or a director has an interest) gives rise to conflicts of interest if the funds and accounts have different objectives and strategies, benchmarks, time horizons, and fees, as a portfolio manager must allocate his or her time and investment ideas across multiple funds and accounts. In certain instances, there are securities which are suitable for the Fund's portfolio as well as for one or more other accounts advised by MFS or its subsidiaries (including accounts in which MFS, an affiliate, an employee, an officer, or a director has an interest). MFS' trade allocation policies could have a detrimental effect on the Fund if the Fund's orders do not get fully executed or are delayed in getting executed due to being aggregated with those of other accounts advised by MFS or its subsidiaries. A portfolio manager may execute transactions for another fund or account that may adversely affect the value of the Fund's investments. Investments selected for funds or accounts other than the Fund may outperform investments selected for the Fund.

When two or more accounts are simultaneously engaged in the purchase or sale of the same security, the securities are allocated among clients in a manner believed by MFS to be fair and equitable to each over time. Allocations may be based on many factors and may not

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always be pro rata based on assets managed. The allocation methodology could have a detrimental effect on the price or availability of a security with respect to the Fund.

MFS and/or a portfolio manager may have a financial incentive to allocate favorable or limited opportunity investments or structure the timing of investments to favor accounts other than the Fund; for instance, those that pay a higher advisory fee and/or have a performance adjustment, those that include an investment by the portfolio manager, and/or those in which MFS, its affiliates, its employees, its officers, and/or its directors own or have an interest.

To the extent permitted by applicable law, certain accounts may invest their assets in other accounts advised by MFS or its affiliates, including accounts that are advised by one or more of the same portfolio manager(s), which could result in conflicts of interest relating to asset allocation, timing of purchases and redemptions, and increased profitability for MFS, its affiliates, and/or its personnel, including portfolio managers.

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#### APPENDIX E - PROXY VOTING POLICIES AND PROCEDURES

#### MASSACHUSETTS FINANCIAL SERVICES COMPANY

#### PROXY VOTING POLICIES AND PROCEDURES

#### January 1, 2026
At MFS Investment Management, our core purpose is to create value responsibly. In serving the long-term economic interests of our clients, we rely on deep fundamental research, risk awareness, engagement, and effective stewardship to generate long-term risk-adjusted returns for our clients. A core component of this approach is our proxy voting activity. We believe that robust ownership practices can help protect and enhance long-term shareholder value. Such ownership practices include diligently exercising our voting rights as well as engaging with our issuers on a variety of proxy voting topics. We recognize that environmental, social and governance ("ESG") issues may impact the long-term value of an investment, and, therefore, we consider ESG issues in light of our fiduciary obligation to vote proxies in what we believe to be in the best long- term economic interest of our clients.

MFS Investment Management and its subsidiaries that perform discretionary investment activities (collectively, "MFS") have adopted these proxy voting policies and procedures ("MFS Proxy Voting Policies and Procedures") with respect to securities owned by the clients for which MFS serves as investment adviser and has been delegated the power to vote proxies on behalf of such clients. These clients include pooled investment vehicles sponsored by MFS (an "MFS Fund" or collectively, the "MFS Funds").

**Our approach to proxy voting is guided by the overall principle that proxy voting decisions are made in what MFS believes to be the best long-term economic interests of our clients for which we have been delegated with the authority to vote on their behalf, and not in the interests of any other party, including company management or in MFS' corporate interests, including interests such as the distribution of MFS Fund shares and institutional client relationships.** These Proxy Voting Policies and Procedures include voting guidelines that govern how MFS generally will vote on specific matters as well as how we monitor potential material conflicts of interest on the part of MFS that could arise in connection with the voting of proxies on behalf of MFS' clients.

#### Our approach to proxy voting is guided by the following additional principles:
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**1. Consistency in application of the policy across multiple client portfolios:** While MFS generally seeks a single vote position on the same matter when securities of an issuer are held by multiple client portfolios, MFS may vote differently on the matter for different client portfolios under certain circumstances. For example, we may vote differently for a client portfolio if we have received explicit voting instructions to vote differently from such client for its own account. Likewise, MFS may vote differently if the portfolio management team responsible for a particular client account believes that a different voting instruction is in the best long-term economic interest of such account.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2. Consistency in application of policy across shareholder meetings in most instances:** As a general matter, MFS seeks to vote consistently on similar proxy proposals across all shareholder meetings. However, as many proxy proposals (e.g., mergers, acquisitions, and shareholder proposals) are analyzed on a case-by-case basis in light of the relevant facts and circumstances of the issuer and proposal MFS may vote similar proposals differently at different shareholder meetings. In addition, MFS also reserves the right to override the guidelines with respect to a particular proxy proposal when such an override is, in MFS' best judgment, consistent with the overall principle of voting proxies in the best long-term economic interests of MFS' clients.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**3. Consideration of company specific context and informed by engagement:** As noted above MFS will seek to consider a company's specific context in determining its voting decision. Where there are significant, complex or unusual voting items we may seek to engage with a company before making the vote to further inform our decision. Where sufficient progress has not been made on a particular issue of engagement, MFS may determine a vote against management is warranted to reflect our concerns and encourage change in the best long-term economic interests of our clients for which MFS has been delegated with the authority to vote on their behalf.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**4. Clear decisions to best support issuer processes and decision making:** To best support improved issuer decision making we strive to generally provide clear decisions by voting either For or Against each item. We may however vote to Abstain in certain situations if we believe a vote either For or Against may produce a result not in the best long-term economic interests of our clients.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**5. Transparency in approach and implementation:** Our voting data is reported to clients upon request and publicly on a quarterly and annual basis on our website (under Proxy Voting Records & Reports). For more information about reporting on our proxy voting activities, please refer to Section F below.

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**A. VOTING GUIDELINES**

The following guidelines govern how MFS will generally vote on specific matters presented for shareholder vote. These guidelines are not exhaustive, and MFS may vote on matters not identified below. In such circumstances, MFS will be governed by its general policy to vote in what MFS believes to be in the best long-term economic interest of its clients. MFS reserves the right to override the guidelines with respect to a particular proxy proposal when such an override is, in MFS' best judgment, consistent with the overall principle of voting proxies in the best long-term economic interests of MFS' clients.

Additionally, these guidelines are written to apply to the markets and companies where MFS has significant assets invested. There will be markets and companies, such as controlled companies and smaller markets, where local governance practices are taken into consideration and exceptions may need to be applied that are not explicitly stated below. There are also markets and companies where transparency and related data limit the ability to apply these guidelines.

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| | |
|:---|:---|
| **Board structure & performance** | **Board structure & performance** |
| MFS generally supports the election and/or discharge of directors proposed by the board in uncontested or non-contentious elections, unless concerns have been identified as described below. | MFS generally supports the election and/or discharge of directors proposed by the board in uncontested or non-contentious elections, unless concerns have been identified as described below. |
| ***Director Independence*** | · As a general matter, MFS will not support a nominee to a board if, as a result of such nominee being elected to the board, the board would consist of less than a simple majority of members who are "independent" (as determined by MFS in its sole discretion). MFS' determination of "independence" may be different than that of the company, the exchange on which the company is listed, or a third party (*e.g.,* proxy advisory firm).<br>· As a general matter, MFS will vote against any non-independent nominee if MFS does not believe a key committee of the board (such as audit, nomination and compensation/remuneration committee) is "sufficiently independent." MFS' view of what constitutes "sufficiently independent" and which board committees are "key committees" varies by market.<br>· MFS may accept lower levels of independence in certain circumstances, such as companies required to have non-shareholder representatives on the board, controlled companies, and companies in certain markets. |
| ***Independent Chairs*** | · MFS believes boards should include some form of independent leadership responsible for amplifying the views of independent directors and setting meeting agendas, and this is often best positioned as an independent chair of the board or a lead independent director. We review the merits of a change in leadership structure on a case-by-case basis.  |
| ***Tenure in leadership roles*** | · MFS may vote against a chair who is designated independent, or a lead independent director whose overall tenure on the board equals or exceeds twenty (20) years, if refreshment is not being considered by the company's board or MFS identifies other concerns that suggest more immediate refreshment is necessary. |
| ***Overboarding*** | · We believe that all directors should have sufficient time and attention to fulfil their duties and play their part in effective oversight, both in normal and exceptional circumstances. As a general guideline, MFS will generally vote against a director's election if we believe that the director's service on boards of outside public companies is "excessive". Our view as to what constitutes "excessive" varies by market and role that the director serves with the public company (*i.e.,* executive or non-executive). In cases of a director nominee who serves as a CEO or executive chair of a public company, MFS will likely only apply a vote against director's election at the meetings of the companies where the director is a non-executive.<br>· When analyzing whether a director's service on boards of multiple public companies is excessive, MFS may also consider: (i) whether the company has disclosed the director's plans to step down from one or more public company boards within a reasonable time; or (ii) whether the director serves on the multiple boards of affiliated companies, or on more than one investment company within the same investment company complex (as defined by applicable law). MFS may also vote in favor of a director whose service on outside public company boards we would otherwise deem to be excessive if after engagement we believe the director's ability to dedicate sufficient time and attention is not impaired by the external roles.  |

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| | |
|:---|:---|
|  | · MFS may also vote against any director if we deem such nominee to have board or committee roles or other outside time commitments that we believe would impair their ability to dedicate sufficient time and attention to their director role. |
| ***Diversity*** | · MFS believes that a well-balanced board with diverse perspectives is a foundation for sound corporate governance. MFS takes a holistic view on the dimensions of diversity that can lead to a diversity of perspectives.<br>· Gender diversity is one such dimension and if data is available, MFS will generally vote against the chair of the nominating and governance committee or other most relevant position at any company whose board, in our view, is comprised of an insufficient representation of directors who are women. Our view as to what constitutes insufficient representation varies by market. <br>· MFS may consider other dimensions of diversity if we believe that the board will benefit from more diverse perspectives.<br>· MFS considers exceptions to our approach if we believe that the company is transitioning towards a well-balanced board with diverse perspectives or has provided clear and compelling reasons for why they have been unable to do so. |
| ***Board size*** | · MFS believes that the size of the board can have an effect on the board's ability to function efficiently and effectively. MFS evaluates board size on a case-by-case basis.  |
| ***Other Concerns*** | · MFS will generally not support a nominee if MFS can determine that the nominee attended less than 75% of the board and/or relevant committee meetings in the previous year without a valid reason stated in the proxy materials or other company communications. <br>· MFS may not support some or all nominees standing for re-election to a board if MFS determines (i) there are concerns with a director or board regarding performance, governance, or oversight; (ii) the board or relevant committee has not adequately responded to an issue that received a significant vote against management from shareholders; or (iii) the board has implemented a poison pill without shareholder approval since the last annual meeting and such poison pill is not on the subsequent shareholder meeting's agenda; or (iv) a Japanese company allocates a significant portion of its net assets to cross-shareholdings. <br>· MFS may also not support some or all nominees standing for election to a compensation/remuneration committee if (i) MFS votes against consecutive executive compensation votes; (ii) MFS determines that a particularly egregious executive compensation practice has occurred; (iii) MFS believes the committee is inadequately incentivizing or rewarding executives, or is overseeing pay practices that MFS believes are detrimental to the long-term success of the company; or (iii) an advisory pay vote is not presented to shareholders, or the company has not implemented the advisory vote frequency supported by a plurality/majority of shareholders.<br>· Unless the concern is commonly accepted market practice, MFS may also not support some or all nominees standing for election to a nominating committee if we determine (in our sole discretion) that the chair of the board is not independent and there is no strong lead independent director role in place, or an executive director is a member of a key board committee. <br>· Where the election of directors is bundled MFS may vote against the whole group if there is concern with an individual director and no other vote related to that director. |
| ***Discharge of Directors*** | · Where individual directors are not presented for election in the year MFS may apply the same vote position described above to votes on the discharge of the director. |

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| | |
|:---|:---|
| ***Proxy contests*** | · From time to time, a shareholder may propose a slate of director nominees different than the slate of director nominees proposed by the company (a "proxy contest"). MFS will analyze proxy contests on a case-by-case basis, taking into consideration the track record and current recommended initiatives of both company management and the dissident shareholder(s). MFS will support the director nominee(s) that we believe is in the best, long-term economic interest of our clients.  |
| **Board Accountability** | **Board Accountability** |
| ***Majority voting for the election of directors*** | · MFS generally supports reasonably crafted proposals calling for directors to be elected with an affirmative majority of votes cast and/or the elimination of the plurality standard for electing directors (including binding resolutions requesting that the board amend the company's bylaws), provided the proposal includes a carve-out for a plurality voting standard when there are more director nominees than board seats (e.g., contested elections). |
| ***Declassified boards*** | · MFS generally supports proposals to declassify a board (i.e., a board in which only a sub-set of board members is elected each year) for all issuers other than for certain closed-end investment companies. MFS generally opposes proposals to classify a board for issuers other than for certain closed-end investment companies. |
| ***The right to call a special meeting or act by written consent*** | · MFS believes that there should be an appropriate balance between the ability of shareholders to exercise the right to call special meetings or act by written consent with the cost of conducting such special meetings or actions.<br>· MFS will generally support management proposals to establish these rights where they do not currently exist.<br>· MFS will generally support shareholder proposals to adjust existing rights if we believe that the shareholder proposal appropriately balances shareholder and company interests (generally a threshold of 15% for large and widely held companies and a threshold between 15%-25% for other companies).<br>· MFS will support shareholder proposals to establish the right to act by majority written consent if shareholders do not have the right to call a special meeting at the thresholds described above or lower.<br>· MFS may also support shareholder proposals to establish these rights if no existing right exists if we believe that to do so appropriately balances the interests of shareholders and the company. In such circumstances, we may support proposals with thresholds lower than the thresholds that we would support if proposed by management or a shareholder requesting an adjustment to an existing right.  |
| ***Proxy access*** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· MFS believes that the ability of qualifying shareholders to nominate a certain number of directors on the company's proxy statement ("proxy access") may have corporate governance benefits. However, such potential benefits must be balanced by its potential misuse by shareholders.<br>· MFS generally supports proxy access proposals at U.S. issuers that establish ownership criteria of 3% of the company held continuously for a period of 3 years. In our view, such qualifying shareholders should have the ability to nominate at least 2 directors.  |
| **Shareholder rights** | **Shareholder rights** |
| ***Anti-takeover measures*** | · In general, MFS votes against any measure that inhibits capital appreciation in a stock, including proposals that protect management from action by shareholders. These types of proposals take many forms, ranging from "poison pills" and "shark repellents" to super-majority requirements.  |

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| | | |
|:---|:---|:---|
|  |  | · While MFS may consider the adoption of a prospective "poison pill" or the continuation of an existing "poison pill" on a case-by-case basis, MFS generally votes against such anti-takeover devices. <br>· MFS will consider any poison pills designed to protect a company's net-operating loss carryforwards on a case-by-case basis, weighing the accounting and tax benefits of such a pill against the risk of deterring future acquisition candidates. <br>· MFS will also consider, on a case-by-case basis, proposals designed to prevent tenders which are disadvantageous to shareholders such as tenders at below market prices and tenders for substantially less than all shares of an issuer.<br>· MFS generally supports proposals that seek to remove governance structures that insulate management from shareholders. <br>· MFS generally votes for proposals to rescind existing "poison pills" and proposals that would require shareholder approval to adopt prospective "poison pills."  |
|  | ***Cumulative voting*** | · MFS generally opposes proposals that seek to introduce cumulative voting and supports proposals that seek to eliminate cumulative voting. In either case, MFS will consider whether cumulative voting is likely to enhance the interests of MFS' clients as minority shareholders.  |
|  | ***One-share one-vote*** | · As a general matter, MFS supports proportional alignment of voting rights with economic interest and may not support a proposal that deviates from this approach. <br>· For companies listing with multiple share classes or other forms of disproportionate control are in place, we expect these to have sunset provisions of generally no longer than seven years after which the structure becomes single class one-share one-vote. |
|  | ***Reincorporation and reorganization proposals*** | · When presented with a proposal to reincorporate a company under the laws of a different state, or to effect some other type of corporate reorganization, MFS considers the underlying purpose and ultimate effect of such a proposal in determining whether or not to support such a measure. MFS generally votes with management in regard to these types of proposals; however, if MFS believes the proposal is not in the best long-term economic interests of its clients, then MFS may vote against management (e.g., the intent or effect would be to create additional inappropriate impediments to possible acquisitions or takeovers). |
|  | ***Other business*** | · MFS generally votes against "other business" proposals as the content of any such matter is not known at the time of our vote. |
| **Capitalization proposals, capital allocation & corporate actions** | **Capitalization proposals, capital allocation & corporate actions** | **Capitalization proposals, capital allocation & corporate actions** |
|  | ***Issuance of stock*** | · There are many legitimate reasons for the issuance of stock. Nevertheless, MFS may vote a stock option plan as noted below under "Executive Compensation-Stock Plans."<br>· MFS typically votes against proposals where management is asking for authorization to issue common or preferred stock with no reason stated (a "blank check") because the unexplained authorization could work as a potential anti-takeover device. |

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| | | | |
|:---|:---|:---|:---|
| | |  | · MFS may also vote against the authorization or issuance of common or preferred stock if MFS determines that the requested authorization is excessive or not warranted. MFS will consider the duration of the authority and the company's history in using such authorities in making its decision. |
| | | ***Repurchase programs*** | · MFS generally supports proposals to institute share repurchase plans in which all shareholders have the opportunity to participate on an equal basis. Such plans may include a company acquiring its own shares on the open market, or a company making a tender offer to its own shareholders. |
| | | ***Mergers, acquisitions & other special transactions*** | · MFS considers proposals with respect to mergers, acquisitions, sale of company assets, share and debt issuances and other transactions that have the potential to affect ownership interests on a case-by-case basis. When analyzing such proposals, we use a variety of materials and information, including our own internal research as well as the research of third-party service providers.  |
| **Independent Auditors** | **Independent Auditors** | **Independent Auditors** | **Independent Auditors** |
|  | MFS generally supports the election of auditors but may determine to vote against the election of a statutory auditor and/or members of the audit committee in certain markets if MFS reasonably believes that the statutory auditor is not truly independent, sufficiently competent or there are concerns related to the auditor's work or opinion. | MFS generally supports the election of auditors but may determine to vote against the election of a statutory auditor and/or members of the audit committee in certain markets if MFS reasonably believes that the statutory auditor is not truly independent, sufficiently competent or there are concerns related to the auditor's work or opinion. | MFS generally supports the election of auditors but may determine to vote against the election of a statutory auditor and/or members of the audit committee in certain markets if MFS reasonably believes that the statutory auditor is not truly independent, sufficiently competent or there are concerns related to the auditor's work or opinion. |
| **Executive Compensation** | **Executive Compensation** | **Executive Compensation** | **Executive Compensation** |
| | | ***Executive Compensation Packages*** | · MFS believes that competitive compensation packages are necessary to attract, motivate and retain executives. We seek compensation plans that we believe are geared towards durable long-term value creation and aligned with shareholder interests and experience.<br>· MFS will analyze votes on executive compensation on a case-by-case basis. When analyzing compensation practices, MFS generally uses a two-step process. MFS first seeks to identify any compensation practices that are potentially of concern. Where such practices are identified, MFS will then analyze the compensation practices in light of relevant facts and circumstances. <br>· MFS will vote against an issuer's executive compensation practices if MFS determines that such practices are not geared towards durable long-term value creation and are misaligned with the best, long-term economic interest of our clients. When analyzing whether an issuer's compensation practices are aligned with the best, long-term economic interest of our clients, MFS uses a variety of materials and information, including our own internal research and engagement with issuers as well as the research of third-party service providers. <br>· MFS generally supports proposals to include an advisory shareholder vote on an issuer's executive compensation practices on an annual basis.<br>· MFS does not have formal voting guideline in regard to the inclusion of ESG incentives in a company's compensation plan; however, where such incentives are included, we believe (i) the incentives should be tied to issues that are financially material for the issuer in question; (ii) they should predominantly include quantitative or other externally verifiable outcomes rather than qualitative measures; and (iii) the weighting of incentives should be appropriately balanced with other strategic priorities.<br>· We believe non-executive directors may be compensated in cash or stock, but these should not be performance-based.  |

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|:---|:---|
| ***Stock Plans*** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· As a general matter, MFS will vote against restricted stock, stock option, non-employee director, omnibus stock plans and any other stock plan that it views as having potential excessive dilution, considering aggregate dilution and burn rate. <br>· In addition, MFS may oppose stock option programs and restricted stock plans if they: <br> Allow the board or the compensation committee to re-price underwater options or to automatically replenish shares without shareholder approval.<br> Do not require an investment by the optionee, give "free rides" on the stock price, or permit grants of stock options with an exercise price below fair market value on the date the options are granted. <br>· In the cases where a stock plan amendment is seeking qualitative changes and not additional shares, MFS will vote on a case-by-case basis.<br>· MFS will consider proposals to exchange existing options for newly issued options, restricted stock or cash on a case-by-case basis, taking into account certain factors, including, but not limited to, whether there is a reasonable value-for-value exchange and whether senior executives are excluded from participating in the exchange. <br>· From time to time, MFS may evaluate a separate, advisory vote on severance packages or "golden parachutes" to certain executives at the same time as a vote on a proposed merger or acquisition. MFS will generally vote on a severance package on a case-by-case basis, and MFS may vote against the severance package regardless of whether MFS supports the proposed merger or acquisition. <br>· MFS supports the use of a broad-based employee stock purchase plans to increase company stock ownership by employees, provided that shares purchased under the plan are acquired for no less than 85% of their market value and do not result in excessive dilution.  |
| ***Shareholder Proposals on Executive Compensation*** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· MFS generally opposes shareholder proposals that seek to set rigid restrictions on executive compensation as MFS believes that compensation committees should retain flexibility to determine the appropriate pay package for executives. <br>· MFS may support reasonably crafted shareholder proposals that:<br> Require shareholder approval of any severance package for an executive officer that exceeds a certain multiple of such officer's annual compensation that is not determined in MFS' judgment to be excessive; <br> Require the issuer to adopt a policy to recover the portion of performance-based bonuses and awards paid to senior executives that were not earned based upon a significant negative restatement of earnings, or other significant misconduct or corporate failure, unless the company already has adopted a satisfactory policy on the matter; <br> Expressly prohibit the backdating of stock options; or, <br> Prohibit the acceleration of vesting of equity awards upon a broad definition of a "change-in-control" (e.g., single or modified single-trigger). |
| **Environmental & Social Proposals** | **Environmental & Social Proposals** |
| · MFS believes that a company's environmental or social practices may have an impact on the company's long-term economic financial performance, and we analyze such proposals on a case-by-case basis in light of the relevant facts and circumstances of the issuer and proposal.<br>· Where management presents climate action/transition plans to shareholder vote, we will evaluate the level of ambition over time, scope, credibility and transparency of the plan in determining our support. Where companies present climate action progress reports to shareholder vote we will evaluate evidence of implementation of and progress against the plan and level of transparency in determining our support.  | · MFS believes that a company's environmental or social practices may have an impact on the company's long-term economic financial performance, and we analyze such proposals on a case-by-case basis in light of the relevant facts and circumstances of the issuer and proposal.<br>· Where management presents climate action/transition plans to shareholder vote, we will evaluate the level of ambition over time, scope, credibility and transparency of the plan in determining our support. Where companies present climate action progress reports to shareholder vote we will evaluate evidence of implementation of and progress against the plan and level of transparency in determining our support.  |

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· Most vote items related to environmental and social topics are presented by shareholders. As these proposals, even on the same topic, can vary significantly in scope and action requested, these proposals are typically assessed on a case-by-case basis, and we will support them if in light of the relevant facts and circumstances we believe that to do so is in the best long-term interests of our clients. <br>· MFS is unlikely to support a proposal if we believe that the proposal is unduly costly, restrictive, unclear, burdensome, has potential unintended consequences, is unlikely to lead to tangible outcomes or we don't believe the issue is material or the action a priority for the business. MFS is also unlikely to support a proposal where the company already provides publicly available information that we believe is sufficient to enable shareholders to evaluate the potential opportunities and risks on the subject of the proposal, if the request of the proposal has already been substantially implemented, or if through engagement we gain assurances that it will be substantially implemented. <br>· The laws of various states or countries may regulate how the interests of certain clients subject to those laws (e.g., state pension plans) are voted with respect to environmental, social and governance issues. Thus, it may be necessary to cast ballots differently for certain clients than MFS might normally do for other clients.<br>

B. GOVERNANCE OF PROXY VOTING ACTIVITIES

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**1. MFS Proxy Voting Committee**

The administration of these MFS Proxy Voting Policies and Procedures is overseen by the MFS Proxy Voting Committee, which includes senior personnel from the MFS Legal and Global Investment and Client Support Departments as well as members of the investment team. The Proxy Voting Committee does not include individuals whose primary duties relate to client relationship management, marketing, or sales. The MFS Proxy Voting Committee:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a. Reviews these MFS Proxy Voting Policies and Procedures at least annually and recommends any amendments considered to be necessary or advisable;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b. Determines whether any potential material conflict of interest exists;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c. Considers special proxy issues as they may arise from time to time; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;d. Determines engagement priorities and strategies with respect to MFS' proxy voting activities

The day-to-day application of the MFS Proxy Voting Policies and Procedures are conducted by the MFS Stewardship Team led by MFS' Director of Global Stewardship. The Stewardship Team are members of MFS' investment team.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2. Potential Conflicts of Interest**

These policies and procedures are intended to address any potential material conflicts of interest on the part of MFS or its subsidiaries that are likely to arise in connection with the voting of proxies on behalf of MFS' clients. If such potential material conflicts of interest do arise, MFS will analyze, document and report on such potential material conflicts of interest (see below) and shall ultimately vote the relevant ballot items in what MFS believes to be the best long-term economic interests of its clients.

The MFS Proxy Voting Committee is responsible for monitoring potential material conflicts of interest on the part of MFS or its subsidiaries that could arise in connection with the voting of proxies on behalf of MFS' clients. Due to the client focus of our investment management business, we believe that the potential for actual material conflict of interest issues is small. Nonetheless, we have developed precautions to assure that all votes are cast in the best long-term economic interest of its clients.<sup>1</sup> Other MFS internal policies require all MFS employees to avoid actual and potential conflicts of interests between personal activities and MFS' client activities. If an employee (including investment professionals and members of the Proxy Voting Committee or the Stewardship Team) identifies an actual or potential conflict of interest with respect to any voting decision (including the ownership of securities in their individual portfolio), then that employee must recuse himself/herself from participating in the voting process. Any significant attempt by an employee of MFS or its subsidiaries to unduly influence MFS' voting on a particular proxy matter should also be reported to the MFS Proxy Voting Committee. Furthermore, the Proxy Voting Committee does not include individuals whose job responsibilities primarily include client relationship management, marketing, or sales.

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<sup>1</sup> For clarification purposes, note that MFS votes in what we believe to be the best, long-term economic interest of our clients entitled to vote at the shareholder meeting, regardless of whether other MFS clients hold "short" positions in the same issuer or whether other MFS clients hold an interest in the company that is not entitled to vote at the shareholder meeting (e.g., bond holder).

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Additionally, MFS will follow the process set forth below.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a. Compare the name of the issuer of such ballot or the name of the shareholder (if identified in the proxy materials) making such proposal against a list of significant current (i) distributors of MFS Fund shares, and (ii) MFS institutional clients (the "MFS Significant Distributor and Client List");

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b. If the name of the issuer does not appear on the MFS Significant Distributor and Client List, then no material conflict of interest will be deemed to exist, and the proxy will be voted as otherwise determined by the MFS Proxy Voting Committee;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c. If the name of the issuer appears on the MFS Significant Distributor and Client List, then the MFS Proxy Voting Committee will be apprised of that fact and each member of the MFS Proxy Voting Committee (with the participation of MFS' Conflicts Officer) will carefully evaluate the proposed vote in order to ensure that the proxy ultimately is voted in what MFS believes to be the best long-term economic interests of MFS' clients, and not in MFS' corporate interests; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;d. For all potential material conflicts of interest identified under clause (c) above, the MFS Proxy Voting Committee will document: the name of the issuer, the issuer's relationship to MFS, the analysis of the matters submitted for proxy vote, the votes as to be cast and the reasons why the MFS Proxy Voting Committee determined that the votes were cast in the best long-term economic interests of MFS' clients, and not in MFS' corporate interests. A copy of the foregoing documentation will be provided to MFS' Conflicts Officer.

The members of the MFS Proxy Voting Committee are responsible for creating and maintaining the MFS Significant Distributor and Client List, in consultation with MFS' distribution and institutional business units. The MFS Significant Distributor and Client List will be reviewed and updated periodically, as appropriate.

For instances where MFS is evaluating a director nominee who also serves as a director/trustee of the MFS Funds, then the MFS Proxy Voting Committee will adhere to the procedures described in section (c) above regardless of whether the portfolio company appears on our Significant Distributor and Client List. In doing so, the MFS Proxy Voting Committee will adhere to such procedures for all matters at the company's shareholder meeting at which the director nominee is standing for election.

If an MFS client has the right to vote on a matter submitted to shareholders by Sun Life Financial, Inc. or any of its affiliates (collectively "Sun Life"), MFS will cast a vote on behalf of such MFS client as such client instructs or in the event that a client instruction is unavailable pursuant to the recommendations of Institutional Shareholder Services, Inc.'s ("ISS") benchmark policy, or as required by law. Likewise, if an MFS client has the right to vote on a matter submitted to shareholders by a public company for which an MFS Fund director/trustee serves as an executive officer, MFS will cast a vote on behalf of such MFS client as such client instructs or in the event that client instruction is unavailable pursuant to the recommendations of ISS or as required by law.

Except as described in the MFS Fund's Prospectus, from time to time, certain MFS Funds (the "top tier fund") may own shares of other MFS Funds (the "underlying fund"). If an underlying fund submits a matter to a shareholder vote, the top tier fund will generally vote its shares in the same proportion as the other shareholders of the underlying fund. If there are no other shareholders in the underlying fund, the top tier fund will vote in what MFS believes to be in the top tier fund's best long-term economic interest. If an MFS client has the right to vote on a matter submitted to shareholders by a pooled investment vehicle advised by MFS (excluding those vehicles for which MFS' role is primarily portfolio management and is overseen by another investment adviser), MFS will cast a vote on behalf of such MFS client in the same proportion as the other shareholders of the pooled investment vehicle.<sup>2</sup>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**3. Review of Policy**

The MFS Proxy Voting Policies and Procedures are available on www.mfs.com and may be accessed by both MFS' clients and the companies in which MFS' clients invest. The MFS Proxy Voting Policies and Procedures are reviewed by the Proxy Voting Committee annually. From time to time, MFS may receive comments on the MFS Proxy Voting Policies and Procedures from its clients. These comments are carefully considered by MFS when it reviews these MFS Proxy Voting Policies and Procedures and revises them as appropriate, in MFS' sole judgment.

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<sup>2</sup> MFS Fund Distributors, Inc. ("MFD"), the principal underwriter of each series of the MFS Active Exchange Traded Funds Trust (each series, an "MFS Active ETF" and collectively, the "MFS Active ETFs"), has been appointed by each authorized participant with authority to vote such participant's shares of each MFS Active ETF on any matter submitted to a vote of the shareholders of the MFS Active ETF. If an MFS Active ETF submits a matter to a shareholder vote, MFD will vote (or abstain from voting) an authorized participant's shares in the same proportion as the other shareholders of the MFS Active ETF. If there are no other shareholders in the MFS Active ETF, MFS will vote in what MFS believes to be in the MFS Active ETF's best interest.

In addition, in the event MFS or an MFS subsidiary hold shares of an MFS Fund (including an MFS Active ETF) as seed money and the MFS Fund submits a matter to a shareholder vote, MFS or the MFS subsidiary, as the case may be, will vote (or abstain from voting) its shares in the same proportion as the other shareholders of the MFS Fund. If there are no other shareholders in the MFS Fund, MFS or the MFS subsidiary, as the case may be, will vote in what MFS believes to be in the MFS Fund's best interest.

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C. OTHER ADMINISTRATIVE MATTERS & USE OF PROXY ADVISORY FIRMS

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**1. Use of Proxy Advisory Firms**

MFS, on behalf of itself and certain of its clients (including the MFS Funds) has entered into an agreement with an independent proxy administration firm pursuant to which the proxy administration firm performs various proxy vote related administrative services such as vote processing and recordkeeping functions. Except as noted below, the proxy administration firm for MFS and its clients, including the MFS Funds, is ISS. The proxy administration firm for MFS Development Funds, LLC is Glass, Lewis & Co., Inc. ("Glass Lewis"; Glass Lewis and ISS are each hereinafter referred to as the "Proxy Administrator").

The Proxy Administrator receives proxy statements and proxy ballots directly or indirectly from various custodians, logs these materials into its database and matches upcoming meetings with MFS Fund and client portfolio holdings, which are inputted into the Proxy Administrator's system by an MFS holdings data-feed. The Proxy Administrator then reconciles a list of all MFS accounts that hold shares of a company's stock and the number of shares held on the record date by these accounts with the Proxy Administrator's list of any upcoming shareholder's meeting of that company. If a proxy ballot has not been received, the Proxy Administrator and/or MFS may contact the client's custodian requesting the reason as to why a ballot has not been received. Through the use of the Proxy Administrator system, ballots and proxy material summaries for all upcoming shareholders' meetings are available on-line to certain MFS employees and members of the MFS Proxy Voting Committee.

MFS also receives research reports and vote recommendations from proxy advisory firms. These reports are only one input among many in our voting analysis, which includes other sources of information such as proxy materials, company engagement discussions, other third-party research and data. MFS has due diligence procedures in place to help ensure that the research we receive from our proxy advisory firms is materially accurate and that we address any material conflicts of interest involving these proxy advisory firms. This due diligence includes an analysis of the adequacy and quality of the advisory firm staff, its conflict of interest policies and procedures and independent audit reports. We also review the proxy policies, methodologies and peer-group-composition methodology of our proxy advisory firms at least annually. Additionally, we also receive reports from our proxy advisory firms regarding any violations or changes to conflict of interest procedures.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2. Analyzing and Voting Proxies**

Proxies are voted in accordance with these MFS Proxy Voting Policies and Procedures. The Proxy Administrator, at the prior direction of MFS, automatically votes all proxy matters that do not require the particular exercise of discretion or judgment with respect to these MFS Proxy Voting Policies and Procedures as determined by MFS. In these circumstances, if the Proxy Administrator, based on MFS' prior direction, expects to vote against management with respect to a proxy matter and MFS becomes aware that the issuer has filed or will file additional soliciting materials sufficiently in advance of the deadline for casting a vote at the meeting, MFS will consider such information when casting its vote. With respect to proxy matters that require the particular exercise of discretion or judgment, the MFS Proxy Voting Committee or its representatives considers and votes on those proxy matters. In analyzing all proxy matters, MFS uses a variety of materials and information, including, but not limited to, the issuer's proxy statement and other proxy solicitation materials (including supplemental materials), our own internal research and research and recommendations provided by other third parties (including research of the Proxy Administrator). As described herein, MFS may also determine that it is beneficial in analyzing a proxy voting matter for members of the Proxy Voting Committee or its representatives to engage with the company on such matter. MFS also uses its own internal research, the research of Proxy Administrators and/or other third party research tools and vendors to identify (i) circumstances in which a board may have approved an executive compensation plan that is excessive or poorly aligned with the portfolio company's business or its shareholders, (ii) environmental, social and governance proposals that warrant further consideration, or (iii) circumstances in which a company is not in compliance with local governance or compensation best practices. Representatives of the MFS Proxy Voting Committee review, as appropriate, votes cast to ensure conformity with these MFS Proxy Voting Policies and Procedures.

For certain types of votes (e.g., mergers and acquisitions, proxy contests and capitalization matters), MFS' Stewardship Team will seek a recommendation from the MFS investment analyst that is responsible for analyzing the company and/or portfolio managers that holds the security in their portfolio. For certain other votes that require a case-by-case analysis per these policies (e.g., potentially excessive executive compensation issues, or certain shareholder proposals), the Stewardship Team will likewise consult with MFS investment analysts and/or portfolio managers.<sup>3</sup> However, the MFS Proxy Voting Committee will ultimately be responsible for the manner in which all ballots are voted.

As noted above, MFS reserves the right to override the guidelines when such an override is, in MFS' best judgment, consistent with the overall principle of voting proxies in the best long-term economic interests of MFS' clients. Any such override of the guidelines shall be analyzed, documented and reported in accordance with the procedures set forth in these policies.

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<sup>3</sup> From time to time, due to travel schedules and other commitments, an appropriate portfolio manager or research analyst may not be available to provide a vote recommendation. If such a recommendation cannot be obtained within a reasonable time prior to the cut-off date of the shareholder meeting, the MFS Proxy Voting Committee may determine to abstain from voting.

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In accordance with its contract with MFS, the Proxy Administrator also generates a variety of reports for the MFS Proxy Voting Committee and makes available on-line various other types of information so that the MFS Proxy Voting Committee or its representatives may review and monitor the votes cast by the Proxy Administrator on behalf of MFS' clients.

For those markets that utilize a "record date" to determine which shareholders are eligible to vote, MFS generally will vote all eligible shares pursuant to these guidelines regardless of whether all (or a portion of) the shares held by our clients have been sold prior to the meeting date.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**3. Securities Lending** 

From time to time, certain MFS Funds may participate in a securities lending program. In the event MFS or its agent receives timely notice of a shareholder meeting for a U.S. security, MFS and its agent will attempt to recall any securities on loan before the meeting's record date so that MFS will be entitled to vote these shares. However, there may be instances in which MFS is unable to timely recall securities on loan for a U.S. security, in which cases MFS will not be able to vote these shares. MFS will report to the appropriate board of the MFS Funds those instances in which MFS is not able to timely recall the loaned securities. MFS generally does not recall non-U.S. securities on loan because there may be insufficient advance notice of proxy materials, record dates, or vote cut-off dates to allow MFS to timely recall the shares in certain markets on an automated basis. As a result, non-U.S. securities that are on loan will not generally be voted. If MFS receives timely notice of what MFS determines to be an unusual, significant vote for a non-U.S. security whereas MFS shares are on loan and determines that voting is in the best long-term economic interest of shareholders, then MFS will attempt to timely recall the loaned shares.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**4. Potential impediments to voting** 

In accordance with local law or business practices, some companies or custodians prevent the sale of shares that have been voted for a certain period beginning prior to the shareholder meeting and ending on the day following the meeting ("share blocking"). Depending on the country in which a company is domiciled, the blocking period may begin a stated number of days prior or subsequent to the meeting (e.g., one, three or five days) or on a date established by the company. While practices vary, in many countries the block period can be continued for a longer period if the shareholder meeting is adjourned and postponed to a later date. Similarly, practices vary widely as to the ability of a shareholder to have the "block" restriction lifted early (e.g., in some countries shares generally can be "unblocked" up to two days prior to the meeting whereas in other countries the removal of the block appears to be discretionary with the issuer's transfer agent). Due to these restrictions, MFS must balance the benefits to its clients of voting proxies against the potentially serious portfolio management consequences of a reduced flexibility to sell the underlying shares at the most advantageous time. For companies in countries with share blocking periods or in markets where some custodians may block shares, the disadvantage of being unable to sell the stock regardless of changing conditions generally outweighs the advantages of voting at the shareholder meeting for routine items. Accordingly, MFS will not vote those proxies in the absence of an unusual, significant vote that outweighs the disadvantage of being unable to sell the stock.

From time to time, governments may impose economic sanctions which may prohibit us from transacting business with certain companies or individuals. These sanctions may also prohibit the voting of proxies at certain companies or on certain individuals. In such instances, MFS will not vote at certain companies or on certain individuals if it determines that doing so is in violation of the sanctions.

In limited circumstances, other market specific impediments to voting shares may limit our ability to cast votes, including, but not limited to, late delivery of proxy materials, untimely vote cut-off dates, power of attorney and share re-registration requirements, or any other unusual voting requirements. In these limited instances, MFS votes securities on a best-efforts basis in the context of the guidelines described above.

**D. ENGAGEMENT**

As part of its approach to stewardship MFS engages with companies in which it invests on a range of priority issues. Where sufficient progress has not been made on a particular issue of engagement, MFS may determine a vote against management may be warranted to reflect our concerns and influence for change in the best long-term economic interests of our clients.<sup>4</sup>

MFS may determine that it is appropriate and beneficial to engage in a dialogue or written communication with a company or other shareholders specifically regarding certain matters on the company's proxy statement that are of concern to shareholders, including environmental, social and governance matters. This may be to discuss and build our understanding of a certain proposal, or to provide further context to the company on our vote decision.

A company or shareholder may also seek to engage with members of the MFS Proxy Voting Committee or Stewardship Team in advance of the company's formal proxy solicitation to review issues more generally or gauge support for certain contemplated proposals. For further information on requesting engagement with MFS on proxy voting issues or information about MFS' engagement priorities, please contact proxyteam@mfs.com.

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<sup>4</sup> When engaging with companies, including engagements on proxy voting topics, MFS' focus is discussing, gathering information about, and seeking appropriate transparency on matters so that MFS may make an informed voting decision that advances MFS clients' long-term economic interests. MFS does not engage for the purpose of trying to change or influence control of a company. Engagements may consist of ongoing communications with a company.

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E. RECORDS RETENTION

MFS will retain copies of these MFS Proxy Voting Policies and Procedures in effect from time to time and will retain all proxy voting reports submitted to the Board of Trustees of the MFS Funds for the period required by applicable law. All proxy voting materials and supporting documentation, including records generated by the Proxy Administrator's system as to proxies processed, including the dates when proxy ballots were received and submitted, and the votes on each company's proxy issues, are retained as required by applicable law.

F. REPORTS

#### U.S. Registered MFS Funds
MFS publicly discloses the proxy voting records of the U.S. registered MFS Funds on a quarterly basis. MFS will also report the results of its voting to the Board of Trustees of the U.S. registered MFS Funds. Based on these reviews, the Trustees of the U.S. registered MFS Funds will consider possible modifications to these policies to the extent necessary or advisable.

#### Other MFS Clients
MFS may publicly disclose the proxy voting records of certain other clients (including certain MFS Funds) or the votes it casts with respect to certain matters as required by law. A report can also be printed by MFS for each client who has requested that MFS furnish a record of votes cast. The report specifies the proxy issues which have been voted for the client during the year and the position taken with respect to each issue and, upon request, may identify situations where MFS did not vote in accordance with the MFS Proxy Voting Policies and Procedures.

#### Firm-wide Voting Records
MFS also publicly discloses its firm-wide proxy voting records on a quarterly basis.

Except as described above, MFS generally will not divulge actual voting practices to any party other than the client or its representatives because we consider that information to be confidential and proprietary to the client. However, as noted above, MFS may determine that it is appropriate and beneficial to engage in a dialogue with a company regarding certain matters.

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#### APPENDIX F - CERTAIN SERVICE PROVIDER COMPENSATION
Compensation paid by the Fund for investment management services (including applicable administrative services under the Management Agreement) over the specified period is set forth below.

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| | | | |
|:---|:---|:---|:---|
| **Fund** | **Fiscal Year Ended** | **Amount Paid to MFS for Advisory Services After Waivers** | **Amount Waived by MFS for Advisory Services** |
| MFS Active Core Plus Bond ETF (commenced December 5, 2024) | February 28, 2025 | $25685 | $0 |
| MFS Active Growth ETF (commenced December 5, 2024) | February 28, 2025 | $40419 | $0 |
| MFS Active Intermediate Muni Bond ETF (commenced December 5, 2024) | February 28, 2025 | $24951 | $0 |
| MFS Active International ETF (commenced December 5, 2024) | February 28, 2025 | $117440 | $0 |
| MFS Active International Value ETF<sup>1</sup>  | February 28, 2026 | Not Applicable | Not Applicable |
| MFS Active Mid Cap ETF (commenced September 24, 2025) | February 28, 2025 | Not Applicable | Not Applicable |
| MFS Active Value ETF (commenced December 5, 2024) | February 28, 2025 | $35385 | $0 |
| MFS Blended Research Core Equity ETF (commenced October 22, 2025) | February 28, 2025 | Not Applicable | Not Applicable |
| MFS Blended Research Emerging Markets Equity ETF (commenced March 5, 2026) | February 28, 2025 | Not Applicable | Not Applicable |
| MFS Blended Research International Equity ETF (commenced October 22, 2025) | February 28, 2025 | Not Applicable | Not Applicable |
| MFS Blended Research Small-Mid Cap ETF<sup>1</sup>  | February 28, 2026 | Not Applicable | Not Applicable |

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<sup>1</sup> The Fund had not commenced operations as of the date of this SAI.

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#### APPENDIX G - FINANCIAL INTERMEDIARY COMPENSATION
This Appendix sets forth a description of the financial intermediary compensation for the MFS Funds generally. The compensation that financial intermediaries receive is negotiated with each financial intermediary and may vary by fund and among financial intermediaries. The amount of compensation that MFD and its affiliates pay to a financial intermediary can be significant. Depending upon the arrangements in place at any particular time, financial intermediaries may have a financial incentive to recommend a particular MFS Fund or to recommend MFS Funds instead of other funds that do not pay such compensation or that pay lower amounts of compensation.

Financial intermediaries may charge you additional fees and/or commissions. You can ask your financial intermediary for information about any payments it receives from MFD and its affiliates and any services it provides, as well as about fees and/or commissions it charges. Financial intermediaries may categorize and disclose these arrangements differently than MFD and its affiliates do. Financial intermediaries (or their affiliates) that sell or transact in Fund shares may also act as brokers or dealers in connection with a Fund's purchase or sale of portfolio securities. However, the Fund and MFS do not consider financial intermediaries' sale of shares of the Fund as a factor when choosing brokers or dealers to effect portfolio transactions for the Fund.

Certain financial intermediaries receive payments from MFD from MFD's own additional resources as incentives to market the MFS Funds, to participate in MFD's promotional efforts, and/or in recognition of their marketing support, administrative services, and/or transaction processing support. These payments are often referred to as "revenue sharing" payments. MFD compensates financial intermediaries based on criteria established by MFD from time to time, including the distribution potential of the financial intermediary, the types of products and programs offered by the financial intermediary, eligibility for placement on the financial intermediary's preferred or recommended list, the financial and contractual terms with the financial intermediary, the level and/or type of marketing and administrative support provided by the financial intermediary, and the quality of the overall relationship with the financial intermediary. In particular, MFD normally considers the level of assets attributable to the financial intermediary, the level of redemptions by the financial intermediary, the level of access to the financial intermediary's representatives and management, the ability to educate the representatives of the financial intermediary, and the number of representatives of the financial intermediary potentially utilizing the MFS Funds with their clients.

MFD makes these additional payments to financial intermediaries (or their affiliates) for marketing support and administrative services with respect to fund shares sold or held through the financial intermediary's distribution network and/or through programs such as retirement programs, qualified tuition programs, fund supermarkets, fee-based advisory or wrap fee programs, bank trust programs, and insurance (e.g., individual or group annuity) programs. A financial intermediary might perform the services itself or might arrange with a third party to perform the services. In addition to the opportunity to participate in a financial intermediary's retail distribution channel or program, payments can be made on account of one or more of the following: business planning assistance; access for educating financial intermediary personnel about the MFS Funds; eligibility for placement on the financial intermediary's preferred or recommended fund list; access to sales representatives and management representatives of the financial intermediary; provision of analytical or other data services relating to the MFS Funds, such as statistical information regarding sales of the MFS Funds and related financial intermediary information; administrative and account maintenance services; participant or shareholder record-keeping; reporting or transaction processing; program administration; fund/investment selection and monitoring; enrollment; education; and participation arrangements.

MFD also makes payments to certain financial intermediaries that sell or transact in Fund shares to help offset the financial intermediaries' costs associated with client account maintenance support, statement preparation, and transaction processing.

<u>Financial Intermediaries Receiving Such Payments from MFD's Own Additional Resources</u> 

Set forth below is a list of the financial intermediaries to which MFD expects, as of March 31, 2026, to make the payments described above from its own additional resources with respect to the Fund. In certain cases, payments may be made to an affiliate in addition to or in lieu of a payment made to one of these firms. Any additions, modifications, or deletions to the financial intermediaries identified in this list that have occurred since March 31, 2025, are not reflected. You should ask your financial intermediary if it receives such payments from MFD. The financial intermediary firm name provided below may be the legal entity with which MFD has entered into a selling or other similar agreement, an affiliate or parent of such entity, or its trade name.

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| |
|:---|
| **INTERMEDIARY FIRM NAME:**  |
| Cetera Holdings |
| LPL Financial Corporation |
| National Financial Services Corp |
| Pershing LLC |
| Raymond James Financial, Inc. |
| SMArtX Advisory Solutions, LLC |

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Many of the payments to financial intermediaries out of MFD's own additional resources described above are based on variable factors (i.e., a percentage of fund assets attributable to the financial intermediary). Other of these payments are structured in the form of fixed-dollar amounts that are paid without regard to the particular funds and/or share classes held through the financial intermediary. These fixed-dollar payments may be in addition to the variable payments described above and may represent only a small portion of the overall combined fixed and variable revenue sharing payments made by MFD to a particular financial intermediary.

MFD, from MFD's own additional resources, also makes payments or provides reimbursement to, or on behalf of, certain financial intermediaries for costs associated with the purchase of products or services used in connection with sales and marketing, participation in

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and/or presentation at conferences or seminars, sales or training programs, client and investor entertainment and events, and other sponsored events, contests, training and educational meetings, client prospecting and retention activities, and due diligence trips. These payments may include travel expenses, including lodging incurred by registered representatives and other employees of certain financial intermediaries. MFD makes such payments as it deems appropriate, subject to MFD's guidelines and to the extent not prohibited by federal securities laws or state laws, the rules of the SEC and FINRA, or other applicable laws and regulations. In certain instances, MFD will also offer other compensation, including goodwill payments, to the extent not prohibited by applicable laws and regulations.

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#### APPENDIX H - INVESTMENT STRATEGIES AND RISKS
In addition to the principal investment strategies and the principal risks described in the Prospectus, the Fund may employ other investment practices and may be subject to other risks, which are described below. Because the following is a combined description of the investment strategies and risks for the MFS Funds, certain matters described herein may not apply to the Fund. Unless an investment strategy or investment practice described below is prohibited by the investment policies and investment strategies discussed in the Fund's Prospectus or in this SAI, or by applicable law, the Fund may engage in each of the practices described below.

**Below Investment Grade Quality Debt Instruments**. Below investment grade quality debt instruments, commonly referred to as "high yield securities" or "junk bonds," are considered speculative with respect to the issuer's continuing ability to meet principal and interest payments and will involve greater risk of principal and income, including the possibility of default or bankruptcy of the issuers of such instruments, and may involve greater volatility of prices, especially during periods of economic uncertainty or change, than higher quality debt instruments. These below investment grade quality debt instruments generally tend to reflect economic changes and the outlook for economic growth, short-term corporate and industry developments and the market's perception of their credit quality to a greater extent than higher quality debt instruments, which react primarily to fluctuations in the general level of interest rates, although these below investment grade quality debt instruments are also affected by changes in interest rates. In the past, economic downturns or an increase in interest rates have, under certain circumstances, resulted in a higher incidence of default by the issuers of these instruments and may do so in the future, especially in the case of highly leveraged issuers. The prices for these instruments may be affected by legislative and regulatory developments. The market for these below investment grade quality debt instruments may be less liquid than the market for investment grade debt instruments. Furthermore, the liquidity of these below investment grade quality debt instruments may be affected by the market's perception of their credit quality.

These risks are especially acute for distressed instruments, which are securities of issuers in extremely weak financial condition or perceived to have a deteriorating financial condition that will materially affect their ability to meet their financial obligations. Issuers of such instruments are generally experiencing financial or operating difficulties, have substantial capital needs or negative net worth, face special competitive or product obsolescence problems, or may be involved in various stages of bankruptcy, restructuring, or liquidation.

Instruments in the lowest tier of investment grade debt instruments have speculative characteristics and changes in economic conditions or other circumstances are more likely to lead to a weakened capacity to make principal and interest payments and involve the risks described above to a greater degree than in the case of higher grade securities.

**Borrowing**. The Fund may borrow money from banks in an amount not exceeding 33 1/3% of its total assets (including the amount borrowed) less liabilities (other than borrowings) or in connection with engaging in transactions considered by the SEC to constitute a form of borrowing under the 1940 Act (e.g., reverse repurchase agreements) to the extent permitted by the Fund's investment objectives and policies. Notwithstanding the foregoing, pursuant to Rule 18f-4 under the 1940 Act, the Fund has the option to treat all reverse repurchase agreements and similar financing transactions as "derivatives transactions" as opposed to including such transactions in the Fund's asset coverage ratio for borrowings. If the Fund borrows money, its share price may be subject to greater fluctuation until the borrowing is paid off. If the Fund makes additional investments while borrowings are outstanding, this may be considered a form of leverage and may cause a Fund to liquidate investments when it would not otherwise do so. Money borrowed will be subject to interest charges and may be subject to other fees or requirements which would increase the cost of borrowing above the stated interest rate.

**Business Continuity.** MFS has developed a Business Continuity Program (the "Program") that is designed to minimize the disruption of normal business operations in the event of an adverse incident impacting MFS, its affiliates, or the Fund. While MFS believes that the Program is comprehensive and should enable it to reestablish normal business operations in a timely manner in the event of an adverse incident, there are inherent limitations in such programs (including the possibility that contingencies have not been anticipated and procedures do not work as intended) and under some circumstances, MFS, its affiliates, and any vendors used by MFS, its affiliates, or the Fund could be prevented or hindered from providing services to the Fund for extended periods of time. These circumstances may include, without limitation, natural disasters, outbreaks of pandemic or epidemic diseases, acts of governments, any act of declared or undeclared war (including acts of terrorism), power shortages or failures, utility or communication failure or delays (including disruptions to broadband and Internet services), labor disputes, strikes, shortages, supply shortages, system failures or malfunctions. These circumstances, including systems failures and malfunctions, could cause disruptions and negatively impact the Fund's service providers and the Fund's business operations, potentially including an inability to process Fund shareholder transactions, an inability to calculate the Fund's net asset value and price the Fund's investments, and impediments to trading portfolio securities. These risks may be exacerbated by the widespread adoption and use of emerging technologies (such as artificial intelligence). Disruptions to business operations may exist or persist even if employees of MFS, its affiliates, and any vendors used by MFS, its affiliates, or the Fund are able to work remotely. The Fund's ability to recover any losses or expenses it incurs as a result of a disruption of business operations may be limited by the liability, standard of care, and related provisions in its contractual arrangements with MFS and other service providers.

**Cash Management.** A Fund may hold uninvested cash or may invest it in cash equivalents such as money market securities, repurchase agreements, or shares of short-term bond or money market funds. Generally, these securities offer less potential for gains than other types of securities. In addition, the Fund will be subject to the risks of investments in cash equivalents, including liquidity risks that may delay the Fund from accessing its cash. The Fund normally invests uninvested cash balances in a money market fund advised by MFS. This money market fund does not pay a management fee but does incur investment and operating costs.

**Collateralized Debt Obligations.** Collateralized debt obligations ("CDOs") are types of securitized instruments and include collateralized bond obligations ("CBOs"), collateralized loan obligations ("CLOs") and other similarly structured securities. Although certain CDOs may benefit from credit enhancement in the form of a senior-subordinate structure, overcollateralization or bond insurance, such enhancement may not always be present, and may fail to protect a Fund against the risk of loss on default of the collateral. CDOs may charge management fees and administrative expenses, which are in addition to those of a Fund. A CBO is ordinarily issued by a trust or other special purpose entity and is typically collateralized by a diversified pool of debt instruments, including below investment grade quality debt instruments, held by such issuer. A CLO is ordinarily issued by a trust or other special purpose entity and is typically collateralized by a pool of loans,

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including domestic and non-senior secured loans, senior unsecured loans, and subordinate corporate loans, including loans that may be below investment grade quality, held by such issuer. CDOs may be less liquid than other types of securities.

For CDOs, the cash flows are generally split into two or more portions, called tranches, varying in risk and yield. The riskiest tranche bears the first loss from defaults from the bonds, loans or other underlying collateral and serves to protect the other, more senior tranches from default (though such protection is not complete). The risks of an investment in a CDO depend largely on the type of the underlying collateral and the tranche of the CDO in which a Fund invests. Since it is partially protected from defaults, a senior tranche from a CDO may have a higher rating and lower yields than its underlying collateral.

In addition to the risks associated with debt instruments and securitized instruments, CDOs carry additional risks including, (i) the possibility that distributions from underlying collateral will not be adequate to make interest or other payments; (ii) the quality of the underlying collateral may decline in value or default; (iii) the risk that the Fund may invest in CDOs that are subordinate to other tranches; and (iv) the complex structure of the instrument may produce disputes with the issuer or unexpected investment results.

Some of the loans in which a Fund may invest or to which a Fund may gain exposure through its investments in CDOs, CLOs, or other types of structured securities may be covenant-lite loans, which impose fewer or less restrictive constraints on the borrower than certain other types of loans. Covenant-lite loans generally do not include terms that allow the lender to monitor the performance of the borrower and declare a default or force a borrower into bankruptcy restructuring if certain quantitative criteria related to the borrower's financial condition are breached. Under such loans, lenders typically must rely on covenants that restrict a company from incurring additional debt or engaging in certain actions, in each case generally subject to certain exceptions, which exceptions may be broader or more extensive in covenant-lite loans relative to certain other types of loans. Such covenants can only be breached by an affirmative action of the borrower, rather than by a deterioration in the borrower's financial condition. Accordingly, a Fund may have fewer rights against a borrower when it invests in or has exposure to covenant-lite loans and, accordingly, may have a greater risk of loss on such investments as compared to investments in or exposure to loans with additional or more traditional covenants.

**Commodity Pool Operator Regulation.** A notice has been filed by MFS with the National Futures Association (NFA) claiming an exclusion from the definition of the term "commodity pool operator" (CPO) under the Commodity Exchange Act, as amended, and the rules of the Commodity Futures Trading Commission (CFTC) promulgated thereunder with respect to the Fund's operation. As a result, as of the date of this SAI, MFS, as adviser to the Fund, is not currently subject to registration or regulation as a CPO with respect to the Fund. However, if in the future MFS, with respect to a Fund, is no longer eligible for this exclusion, the notice claiming exclusion from the definition of a CPO would be withdrawn, and MFS, as adviser to such Fund, would be subject to regulation as a CPO with respect to such Fund.

**Commodity-Related Investments.** Commodity-related investments include futures, options, options on futures, swaps, structured securities, securities of other investment companies, grantor trusts, commodity-linked notes, and hybrid instruments whose values are related to commodities or commodity contracts. The value of commodity-related investments can be affected by factors such as changes in overall market movements, real or perceived inflationary trends, commodity index volatility, changes in interest rates, currency fluctuations, population growth or decline and changing demographics, or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, changes in storage costs, insufficient storage capacity, embargoes, competition from substitute products, transportation bottlenecks or shortages, fluctuations in supply and demand, tariffs, war, policies of commodity cartels, and international market, economic, industry, political, environmental, public health, and regulatory developments. Certain commodities (and related derivatives) are susceptible to negative prices due to factors such as supply surpluses caused by global events. Commodities may be subject to the risk of theft, spoilage, destruction, delivery disruption and similar risks. In addition, storage, insurance and other costs associated with holding commodities will affect the value of commodity-linked investments. The value of commodity-related investments can be more volatile than the value of traditional securities. In addition, a highly liquid market may not exist for certain commodity-related instruments, and there can be no assurance that one will develop. Commodity-related instruments are also subject to credit and interest rate risks that in general affect the values of debt securities.

Actions of and changes in governments, and political and economic instability, in commodity-producing and -exporting countries may affect the production and marketing of commodities. In addition, commodity-related industries throughout the world are subject to greater political, environmental, and other governmental regulation than many other industries. Changes in government policies and the need for regulatory approvals may adversely affect the products and services of companies in the commodities industries. For example, the exploration, development, and distribution of coal, oil, and gas in the United States are subject to significant federal and state regulation, which may affect rates of return on coal, oil, and gas, and the kinds of services that the federal and state governments may offer to companies in those industries. In addition, compliance with environmental and other safety regulations has caused many companies in commodity-related industries to incur production delays and significant costs. Government regulation also may impede the development of new technologies. The effect of future regulations affecting commodity-related industries cannot be predicted.

**Common Stock**. Common stock represents an equity or ownership interest in an issuer. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of bonds and preferred stock take precedence over the claims of those who own common stock.

**Contingent Value Rights**. A Fund may hold contingent value rights ("CVRs"). A CVR gives the holder the right to receive an amount, which may be a fixed amount or a variable amount determined by a formula, in the event that a specified corporate action or other business event or trigger occurs (or does not occur) during the term of the CVR. CVRs are often subject to an expiration date. CVRs may be awarded to investors in the context of a corporate acquisition or major restructuring, such as a reorganization pursuant to Chapter 11 of the United States Bankruptcy Code or other bankruptcy reorganization. For example, investors in an acquired or reorganized company may receive CVRs that enable the investor to receive additional shares of the acquiring company in the event that the acquiring company's share price falls below a certain level by a specified date, or to receive cash payments and/or securities in the event of a future sale or liquidation event involving the company by a specified date. CVRs generally do not entitle a holder to dividends or voting rights with respect to the underlying company and do not represent any rights in the assets of the issuing company. Risks associated with the use of CVRs are generally similar to risks associated with the use of options, such as the risk that the required trigger does not occur prior to a CVR's expiration, causing the CVR to expire with no value. CVRs also present liquidity risk, as they may not be registered under the federal securities laws or may otherwise be non-transferable or difficult to transfer, as well as counterparty risk and credit risk. Further, because CVRs are valued based on the likelihood

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of the occurrence of a trigger, valuation often requires subjective modeling and judgment, which increases the risk of mispricing or improper valuation.

**Convertible Securities**. Convertible securities are bonds, debentures, notes, or other securities that may be converted into or exchanged for (by the holder or by the issuer) shares of stock (or cash or other securities of equivalent value) of the same or a different issuer at a stated exchange ratio. Convertible securities are senior to common stock in a corporation's capital structure, but are usually subordinated to senior debt obligations of the issuer. A convertible security provides holders, through its conversion feature, an opportunity to participate in increases in the market price of their underlying securities. A convertible security may also be called for redemption or conversion by the issuer after a particular date and under certain circumstances (including a specified price) established upon issue.

Convertible securities generally have less potential for gain or loss than common stocks. Convertible securities generally provide yields higher than the underlying common stocks, but generally lower than comparable non-convertible securities. Because of this higher yield, a convertible security generally sells at a price above its "conversion value," which is the current market value of the stock to be received upon conversion. The difference between this conversion value and the price of a convertible security will vary over time generally depending on changes in the value of the underlying common stocks and interest rates. When the underlying common stock declines in value, a convertible security will tend not to decline to the same extent because of the interest or dividend payments and the repayment of principal at maturity for certain types of convertible securities. In general, a convertible security performs more like a stock when the conversion value exceeds the value of the convertible security without the conversion feature and more like a debt instrument when its conversion value is less than the value of the convertible security without the conversion feature. However, a security that is convertible other than at the option of the holder generally does not limit the potential for loss to the same extent as a security convertible at the option of the holder. When the underlying common stock rises in value, the value of convertible security may also be expected to increase. At the same time, however, the difference between the market value of a convertible security and its conversion value will narrow, which means that the value of a convertible security will generally not increase to the same extent as the value of the underlying common stock. Because a convertible security may also be interest rate-sensitive, its value may increase as interest rates fall and decrease as interest rates rise. A convertible security is also subject to credit risk, and is often a lower-quality security.

A contingent convertible or contingent capital security is a type of hybrid security that is intended to either convert into an equity security or have its principal written down or written off upon the occurrence of certain trigger events. An automatic write down, write off, or conversion event will typically be triggered by a reduction in the issuer's capital level or an action by the issuer's regulator, but may also be triggered by other factors. Due to the contingent write down, write off, or conversion feature, a contingent convertible security may have a greater risk of principal loss than other securities in times of financial stress. If the trigger level is breached, the value of the contingent convertible security may decrease to zero with no opportunity for an increase in value even if the issuer continues to operate.

**Counterparties and Third Parties:** Transactions involving a counterparty other than the issuer of the instrument, including clearing organizations, or a third party responsible for servicing the instrument or effecting the transaction, are subject to the credit risk of the counterparty or third party, and to the counterparty's or third party's ability or willingness to perform in accordance with the terms of the transaction. In addition, fund assets held by a custodian or other third party are subject to the credit risk of the custodian or other third party, and to the custodian's or third party's ability or willingness to perform in accordance with the terms of the arrangement. If such a counterparty, custodian, or other third party becomes insolvent or declares bankruptcy, the fund may be limited in its ability to exercise rights to obtain the return of fund assets or in exercising other rights against the counterparty or third party. In addition, bankruptcy and liquidation proceedings take time to resolve, which can limit or preclude a fund's ability to exercise its rights, including terminating an arrangement or transaction or obtaining fund assets in a timely manner. Counterparties and third parties located outside the United States may involve greater risk of loss or delay in the event of insolvency or bankruptcy. If a counterparty fails to meet its contractual obligations, goes bankrupt, or otherwise experiences a business interruption, the Fund could miss investment opportunities or otherwise hold investments it would prefer to sell, resulting in losses for the Fund.

**Country Location.** The issuer of a security or other investment is generally deemed to be economically tied to a particular country if: (a) the security or other investment is issued or guaranteed by the government of that country or any of its agencies, authorities or instrumentalities; (b) the issuer is organized under the laws of, and maintains a principal office in, that country; (c) the issuer has its principal securities trading market in that country; (d) a third party has identified that country as an issuer's "country of risk"; (e) the issuer is included in an index which is representative of that country; (f) the issuer derives 50% or more of its total revenues from goods sold or services performed in that country; or (g) the issuer has 50% or more of its assets in that country. For purposes of determining if a security or other investment is considered a foreign security, revenues from goods sold or services performed in all countries other than the United States and assets in all countries other than the United States may be aggregated. For purposes of determining if a security or other investment is considered an emerging market security, revenues from goods sold or services performed in all emerging market countries and assets in all emerging market countries may be aggregated.

**Cybersecurity.** The Fund does not directly have any operational or security systems or infrastructure that are potentially subject to cybersecurity risks, but the Fund is exposed through its service providers (including, but not limited to, MFS, MFD, the custodian, the auditor, MFSC, financial intermediaries, and subadvisor (if applicable)), to cybersecurity risks. With the increased use of technologies, such as mobile devices and "cloud"-based service offerings and the dependence on the Internet and computer systems to perform necessary business functions, the Fund's service providers are susceptible to operational and information or cybersecurity risks that could result in losses to the Fund and its shareholders. Cyber incidents can result from deliberate attacks or unintentional events. Cyberattacks include, but are not limited to, infection by computer viruses or other malicious software code, unauthorized access to the service providers' digital systems through system-wide "hacking" or other means for the purpose of misappropriating assets or sensitive information, corrupting data, or causing operational disruption. Cyberattacks can also be carried out in a manner that does not require gaining unauthorized access, such as causing denial-of-service attacks on the service providers' systems or websites rendering them unavailable to intended users or via "ransomware" that renders the systems inoperable until appropriate actions are taken. In addition, authorized persons could inadvertently or intentionally release confidential or proprietary information stored on the service providers' systems.

Cybersecurity failures or breaches resulting from the Fund's service providers or the issuers of securities in which the Fund invests could negatively impact the value of the Fund's investments and cause disruptions and impact the service providers' and the Fund's business operations, potentially resulting in financial losses, the inability of Fund shareholders to transact business and the Fund to process

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transactions, the inability to calculate the Fund's net asset value, impediments to trading, destruction to equipment and systems, interference with quantitative models, violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, and/or additional compliance costs. Similar adverse consequences could result from cyber incidents affecting counterparties with which the Fund engages in transactions, governmental and other regulatory authorities, exchanges and other financial market operators, and other parties. The Fund may incur incremental costs to prevent or reduce the impact of cyber incidents in the future which could negatively impact the Fund and its shareholders. Because technology is frequently changing, new ways to carry out cybersecurity attacks continue to develop. Therefore, there is a chance that certain risks have not been identified or prepared for, or that an attack may not be detected, which puts limitations on the ability of the Fund and its service providers to plan for or respond to a cybersecurity attack. Furthermore, geopolitical tensions could increase the scale and sophistication of deliberate cybersecurity attacks, particularly those from nation-states or from entities with nation-state backing.

While MFS has established information security plans, business continuity plans and risk management systems that it believes are reasonably designed to prevent or reduce the impact of such cyberattacks, there are inherent limitations in such plans and systems, including the possibility that certain risks have not been (or cannot be) adequately identified. Furthermore, the Fund cannot directly control any cybersecurity plans and systems put in place by service providers, or by issuers in which the Fund invests, and such service providers may have limited indemnification obligations to MFS or the Fund, each of whom could be negatively impacted as a result.

**Debt Instruments.** Debt instruments represent obligations of corporations, governments, and other entities to repay money borrowed, or other instruments believed to have debt-like characteristics. The issuer or borrower usually pays a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the instrument. In addition, because yields vary over time, no specific level of income can ever be assured. Debt instruments generally trade in the over-the-counter market and can be less liquid than other types of investments, particularly during adverse market and economic conditions. During certain market conditions, debt instruments in some or many segments of the debt market can trade at a negative interest rate; i.e., the price to purchase the debt instrument is more than the present value of expected interest payments and principal due at the maturity of the instrument. Some debt instruments, such as zero coupon bonds or payment-in-kind bonds, do not pay current interest. Other debt instruments, such as certain mortgage-backed securities and other securitized instruments, make periodic payments of interest and/or principal. Some debt instruments are partially or fully secured by collateral supporting the payment of interest and principal. The price of a debt instrument depends, in part, on the issuer's or borrower's credit quality or ability to pay principal and interest when due. The price of a debt instrument is likely to fall if an issuer or borrower defaults on its obligation to pay principal or interest, if the instrument's credit rating is downgraded by a credit rating agency, or based on other changes in the financial condition of the issuer or borrower. The price of a debt instrument changes in response to interest rate changes. Interest rates change in response to the supply and demand for credit, government and/or central bank monetary policy and action, inflation rates, and other factors. In general, the price of a debt instrument falls when interest rates rise and rises when interest rates fall. Interest rate risk is generally greater for fixed-rate instruments than floating-rate instruments and for instruments with longer maturities, or that do not pay current interest. In addition, short-term and long-term interest rates, and interest rates in different countries, do not necessarily move in the same direction or by the same amount. An instrument's reaction to interest rate changes depends on the timing of its interest and principal payments and the current interest rate for each of those time periods. To the extent the Fund invests in fixed-rate instruments, fluctuations in the market price of such investments may not affect interest income derived from those instruments, but may nonetheless affect the Fund's net asset value, especially if the instrument has a longer maturity. Substantial increases in interest rates may cause an increase in issuer defaults, as issuers may lack resources to meet higher debt service requirements. The price of an instrument trading at a negative interest rate responds to interest rate changes like other debt instruments; however, an instrument trading at a negative interest rate is expected to produce a negative return if held to maturity. Debt markets, including fixed-income markets, can be volatile and can decline significantly in response to changes in, or investor perceptions of changes in, market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions that affect a particular type of instrument, issuer, or borrower, and/or that affect the debt market generally. Certain changes or events, such as political, social, or economic developments, including increasing and negative interest rates or the U.S. government's inability at times to agree on a long-term budget and deficit reduction plan (which has in the past resulted and may in the future result in a government shutdown); market closures and/or trading halts; government or regulatory actions, including the imposition of tariffs or other protectionist actions and changes in fiscal, monetary, or tax policies; natural and environmental disasters such as earthquakes, fires, floods, hurricanes, tsunamis and other weather-related phenomena; outbreaks of pandemic and epidemic diseases; terrorist attacks; war or military confrontations; and other geopolitical changes or events (and their aftermath) can have a dramatic adverse effect on debt markets, including fixed-income markets, and may lead to periods of high volatility and reduced liquidity in a debt market or a segment of a debt market. Climate change regulation (such as decarbonization legislation or other mandatory controls to reduce emissions of greenhouse gases) could significantly affect many of the companies in which the Fund invests by, among other things, increasing those companies' operating costs and capital expenditures. Debt markets, including fixed-income markets, may be susceptible to market manipulation or other fraudulent practices which could disrupt the orderly functioning of these markets or adversely affect the value of instruments that trade in such markets.

A widespread health crisis such as a global pandemic could cause substantial market volatility and have long-term effects on the United States and world economies and markets generally. For example, the novel coronavirus (COVID-19) pandemic resulted in significant disruptions to global business activity, including closed international borders, quarantines and travel restrictions, disruptions to business operations and supply chains, and lower consumer demand and economic output. Multiple surges in cases globally, the availability and widespread adoption of vaccines, and the emergence of variant strains of the virus continue to create uncertainty as to the future and long-term impacts resulting from the pandemic. Epidemics and pandemics that may arise in the future could negatively affect the global economy, as well as the economies of individual countries, the financial performance of individual companies and sectors, and the securities and commodities markets in general in significant and unforeseen ways. A health crisis may also exacerbate other pre-existing political, social and economic risks. Any such impacts could adversely affect the prices and liquidity of the Fund's investments and the Fund's performance.

The London Interbank Offered Rate (LIBOR) was the offered rate at which major international banks could obtain wholesale, unsecured funding. The terms of investments, financings or other transactions (including certain derivatives transactions) have historically been tied to LIBOR, and the Fund may have maintained investments and entered into transactions utilizing a LIBOR-based reference rate. In connection with the global transition away from LIBOR led by regulators and market participants, LIBOR was last published on a representative basis at the end of June 2023. Alternative reference rates to LIBOR have been established in most major currencies (e.g., the Secured Overnight Financing Rate (SOFR) for U.S. dollar LIBOR and the Sterling Overnight Index Average for GBP LIBOR) and the transition to replacement

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reference rates continues. The transition away from LIBOR to the use of replacement rates has generally not been disruptive but the full impact of the transition on the Fund or the financial instruments in which the Fund invests cannot yet be fully determined.

SOFR is an index rate calculated based on short-term repurchase agreements backed by U.S. Treasury Instruments. While LIBOR was an unsecured rate, SOFR is a secured rate. There can be no assurance that SOFR will perform in the same way as LIBOR would have at any time, including, without limitation, as a result of changes in interest and yield rates in the market, monetary policy, bank credit risk, market volatility or global or regional economic, financial, political, regulatory, judicial or other events. There can be no assurance that SOFR will not be discontinued or fundamentally altered in a manner that is materially adverse to the interests of the Fund. If the manner in which SOFR is calculated is changed, that change may result in a reduction of the amount of interest payable on SOFR-linked floating rate instruments and the trading prices of such instruments. Additionally, daily changes in SOFR have, on occasion, been more volatile than daily changes in other benchmark or market rates. Although occasional, increased daily volatility in SOFR would not necessarily lead to more volatile interest payments, the return on and value of SOFR-linked floating rate instruments may fluctuate more than floating rate instruments that are linked to less volatile rates.

In addition, interest rates or other types of rates and indices which are classed as "benchmarks" have been the subject of ongoing national and international regulatory reform, including under the European Union regulation on indices used as benchmarks in financial instruments and financial contracts (known as the "Benchmarks Regulation"). The Benchmarks Regulation has been enacted into United Kingdom law by virtue of the European Union (Withdrawal) Act 2018 (as amended), subject to amendments made by the Benchmarks (Amendment and Transitional Provision) (EU Exit) Regulations 2019 (SI 2019/657) and other statutory instruments. Following the implementation of these reforms, the manner of administration of benchmarks has changed and may further change in the future, with the result that relevant benchmarks may perform differently than in the past, the use of benchmarks that are not compliant with the new standards by certain supervised entities may be restricted, and certain benchmarks may be eliminated entirely. Such changes could cause increased market volatility and disruptions in liquidity for instruments that rely on or are impacted by such benchmarks. Additionally, there could be other consequences which cannot be predicted.

See APPENDIX L for a description of ratings.

**Depositary Receipts**. Depositary receipts are securities that evidence ownership interests in a security or a pool of securities that have been deposited with a "depository." Depositary receipts may be sponsored or unsponsored and include American Depositary Receipts (ADRs), European Depositary Receipts (EDRs) and Global Depositary Receipts (GDRs). In sponsored programs, an issuer has made arrangements to have its securities trade in the form of ADRs, EDRs, or GDRs. In unsponsored programs, the issuer may not be directly involved in the creation of the program. For ADRs, the depository is typically a U.S. financial institution and the underlying securities are issued by a foreign issuer. For other depositary receipts, the depository may be a foreign or a U.S. entity, and the underlying securities may have a foreign or a U.S. issuer. Depositary receipts will not necessarily be denominated in the same currency as their underlying securities. Generally, ADRs are issued in registered form, denominated in U.S. dollars, and designed for use in the U.S. securities markets. Other depositary receipts, such as GDRs and EDRs, may be issued in bearer form and denominated in other currencies, and may be offered privately in the United States and are generally designed for use in securities markets outside the United States. The deposit agreement sets out the rights and responsibilities of the underlying issuer, the depository, and the depositary receipt holders. Depositary receipts denominated in a currency other than the currency of the underlying securities subjects the investors to the currency risk of the depositary receipt and the underlying securities.

With sponsored facilities, the underlying issuer typically bears some of the costs of the depositary receipts (such as dividend payment fees of the depository), although most sponsored depositary receipt holders may bear costs such as deposit and withdrawal fees. Depositories of most sponsored depositary receipts agree to distribute notices of shareholder meetings, voting instructions, and other shareholder communications and financial information to the depositary receipt holders at the underlying issuer's request.

Holders of unsponsored depositary receipts generally bear all the costs of the facility. The depository usually charges fees upon the deposit and withdrawal of the underlying securities, the conversion of dividends into U.S. dollars or other currency, the disposition of non-cash distributions, and the performance of other services. The depository of an unsponsored facility frequently is under no obligation to distribute shareholder communications received from the underlying issuer or to pass through voting rights to depositary receipt holders with respect to the underlying securities.

Investments in non-U.S. issuers through ADRs, EDRs, GDRs, and other types of depositary receipts generally involve risks applicable to other types of investments in non-U.S. issuers. Investments in depositary receipts may be less liquid and more volatile than the underlying securities in their primary trading market.

**Derivatives.** While the Fund may use derivatives for any investment purpose, the Fund expects to use derivatives primarily to increase or decrease exposure to a particular market, segment of the market, or security, to increase or decrease interest rate or currency exposure, or as alternatives to direct investments. Derivatives are financial contracts whose value is based on the value of one or more underlying indicators or the difference between underlying indicators. Underlying indicators may include a security or other financial instrument, asset, currency, interest rate, credit rating, commodity, volatility measure or index. Derivatives involve a counterparty to the transaction and are subject to the credit risk of the counterparty and to the counterparty's ability or willingness to perform in accordance with the terms of the derivative. Derivatives include futures, forward contracts, options, inverse floating rate instruments, swaps, and certain complex structured securities. Derivatives can be highly volatile and involve risks in addition to, and potentially greater than, the risks of the underlying indicator(s). Gains or losses from derivatives can be substantially greater than the derivatives' original cost and can sometimes be unlimited. Derivatives can involve leverage. Derivatives can be complex instruments and can involve analysis and processing that differs from that required for other investment types. If the value of a derivative does not correlate well with the particular market or other asset class to which the derivative is intended to provide exposure, the derivative may not have the effect intended. Derivatives can also reduce the opportunity for gains or result in losses by offsetting positive returns in other investments. Derivatives can be less liquid than other types of investments.

Certain derivatives transactions, including futures, options on futures, and certain swaps, are required to be (or are capable of being) centrally cleared. A party to a cleared derivatives transaction is subject to the credit risk of the clearinghouse and the clearing member through which it holds its cleared position. Credit risk of market participants with respect to derivatives that are centrally cleared is concentrated in relatively few clearinghouses and clearing members. It is not clear how an insolvency proceeding of a clearinghouse would be conducted and what impact an insolvency of a clearinghouse would have on the financial system. In the event of the insolvency of a clearinghouse, the Fund might experience a loss of funds deposited through its clearing member as margin with the clearinghouse, a loss of unrealized profits on its

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open positions, and the loss of funds owed to it as realized profits on closed positions. Such an insolvency might also cause a substantial delay before the Fund could obtain the return of funds owed to it by a clearing member who was a member of such clearinghouse. A clearing member is generally obligated to segregate all funds received from customers with respect to cleared derivatives transactions from the clearing member's proprietary assets. However, all funds and other property received by a clearing member from its customers with respect to cleared derivatives are generally held by the clearing member on a commingled basis in an omnibus account by account class, and the clearing member may invest those funds in certain instruments permitted under applicable regulations. Therefore, the Fund might not be fully protected in the event of the bankruptcy of the Fund's clearing member because the Fund would be limited to recovering only a pro rata share of all available funds segregated on behalf of the clearing member's customers for a relevant account class. The clearing member is required to transfer to the clearinghouse the amount of margin required by the clearinghouse for cleared derivatives, which amounts are generally held in an omnibus account at the clearinghouse for all customers of the clearing member. In respect of cleared swaps (but not futures or options on futures), regulations promulgated by the CFTC require that the clearing member notify the clearinghouse of the initial margin provided by the clearing member to the clearinghouse that is attributable to each customer. However, if the clearing member does not accurately report the Fund's initial margin, the Fund is subject to the risk that a clearinghouse will use the assets attributable to it in the clearinghouse's omnibus account to satisfy payment obligations a defaulting customer of the clearing member has to the clearinghouse. Clearinghouses (and in many cases clearing members) have broad rights to increase margin requirements for existing transactions or to terminate those transactions at any time. In addition, if a clearing member does not comply with the applicable regulations or its agreement with the Fund, does not maintain accurate records, or in the event of fraud or misappropriation of customer assets by a clearing member, the Fund could have only an unsecured creditor claim in an insolvency of the clearing member with respect to the margin held by the clearing member.

Legislation and regulation of derivatives in the United States and other jurisdictions, including margin, clearing, trading and reporting requirements, and leveraging and position limits, may make derivatives more costly and/or less liquid, limit the availability of certain types of derivatives, cause the Fund to change its use of derivatives, or otherwise adversely affect a Fund's use of derivatives.

For example, the Fund's ability to exercise remedies, such as the termination of transactions, netting of obligations and realization on collateral, in the event of an insolvency of its counterparties (or their affiliates) could be stayed or eliminated under special resolution regimes adopted in the United States, the European Union, the United Kingdom and various other jurisdictions. Such regimes provide government authorities with broad authority to conduct a resolution of a financial institution that is in danger of default. With respect to counterparties who are subject to such proceedings in the European Union and the United Kingdom, the liabilities of such counterparties to the Fund could be reduced, eliminated or converted to equity (sometimes referred to as a "bail in").

**Derivatives Transactions Subject to Rule 18f-4.** Rule 18f-4 under the 1940 Act governs the Fund's use of derivative instruments and certain other transactions that create future payment and/or delivery obligations by the Fund, such as short sale borrowings and reverse repurchase agreements or similar financing transactions, and certain transactions entered into on a when-issued, delayed delivery or forward commitment basis (for purposes of this section, "Derivatives Transactions"). Unless the Fund qualifies as a "limited derivatives user" as defined under Rule 18f-4 (a "Limited Derivatives User"), the Fund will (i) appoint a Derivatives Risk Manager, (ii) maintain a Derivatives Risk Management Program designed to identify, assess, and reasonably manage the risks associated with Derivatives Transactions; (iii) comply with certain value-at-risk (VaR)-based leverage limits; and (iv) comply with certain Board reporting and recordkeeping requirements. (VaR is an estimate of an instrument's or portfolio's potential losses, expressed as a percentage of the value of a portfolio's assets or fund's net assets, over a given time horizon and at a specified confidence level.)

If a Fund qualifies as a Limited Derivatives User, it is excepted under Rule 18f-4 from the requirements to appoint a Derivatives Risk Manager, adopt a Derivatives Risk Management Program, comply with certain VaR-based leverage limits, and comply with certain Board oversight and reporting requirements. Rather, a Fund that qualifies as a Limited Derivatives User will maintain policies and procedures reasonably designed to manage its derivatives risks and will be subject to risk limits and guidelines as well as certain reporting requirements with respect to its execution of Derivatives Transactions in accordance with Rule 18f-4.

Pursuant to Rule 18f-4, when the Fund enters into reverse repurchase agreements or similar financing transactions, including certain tender option bonds, the Fund will (i) aggregate the amount of indebtedness associated with all of its reverse repurchase agreements or similar financing transactions with the amount of any other "senior securities" representing indebtedness (e.g., bank borrowings, if applicable) when calculating the Fund's asset coverage ratio under Section 18 of the 1940 Act or (ii) treat all such transactions as Derivatives Transactions.

The requirements of Rule 18f-4 may limit the Fund's ability to engage in Derivatives Transactions as part of its investment strategies. These requirements may also increase the cost of the Fund's investments and cost of doing business, which could adversely affect the value of the Fund's investments and/or the performance of the Fund.

**Emerging Market Countries.** Emerging market countries include countries determined to have emerging market economies, taking into account a number of factors, including whether a particular country has a low- to middle-income economy according to the International Bank for Reconstruction and Development (the World Bank), the country's designation by the International Monetary Fund as an emerging market, the country's inclusion in an emerging market or frontier emerging market index, and other factors that demonstrate that the country's financial and capital markets are in the development phase. Emerging market countries include countries located in Latin America, Asia, Africa, the Middle East, and developing countries of Europe, primarily Eastern Europe.

Investments tied economically to emerging market countries may be more volatile than investments in countries with more developed markets. The risk of expropriation, confiscatory taxation, nationalization and social, political, and economic instability, greater susceptibility to environmental problems, greater government involvement in the economy, inflation or deflation, currency devaluations, currency exchange rate fluctuations, war, and terrorism may be greater in emerging market countries than countries in developed markets. In addition, many emerging market countries with less established health care systems have experienced outbreaks of pandemic, epidemic, or contagious diseases from time to time. The economies of emerging market countries may be based on only a few industries, may be vulnerable to changes in trade conditions, and may have large debt burdens and higher inflation rates.

A number of emerging market countries restrict, to varying degrees, foreign investment in securities. Further, some securities may not be available to the Fund because foreign shareholders hold the maximum amount permissible under current law. Repatriation of investment income, capital, and the proceeds of sales by foreign investors may require governmental registration and/or approval in some emerging market countries and may be subject to currency exchange control restrictions. In addition to withholding taxes on investment income, some emerging market countries may impose different capital gains taxes on foreign investors.

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Generally accepted accounting, auditing, and financial reporting practices and standards in emerging market countries may vary from country to country and may be significantly different from those countries in developed markets. There may be less publicly available information about issuers and certain financial instruments, and currency hedging may be unavailable. Shares of companies that only trade on an emerging market securities exchange are not likely to file reports with the SEC. The financial information and disclosure made by such issuers of emerging market securities may be considerably less reliable than publicly available information about other foreign securities since such companies are generally not subject to the same regulatory, accounting, auditing or auditor oversight requirements applicable to companies that file reports with the SEC. In addition, the PCAOB, which regulates auditors of U.S. public companies, may not be able to inspect audit work papers in certain emerging market countries. Many emerging market countries have less government supervision, regulation, and enforcement of the securities markets and participants in those markets.

Investors in emerging markets may not have the ability to seek certain legal remedies in U.S. courts as private plaintiffs. As a practical matter, investors may have to rely on domestic legal remedies that are available in the emerging market and such remedies are often limited and difficult for international investors to pursue. Shareholder claims, including class action and securities law and fraud claims, generally are difficult or unavailable to pursue as a matter of law or practicality in many emerging market countries. In addition, the SEC, U.S. Department of Justice and other U.S. authorities often have substantial difficulties in bringing and enforcing actions against non-U.S. companies and non-U.S. persons, including company officers and directors, in certain emerging markets due to jurisdictional limitations and various other factors.

The securities markets of emerging market countries may have substantially less trading volume, resulting in a lack of liquidity and high price volatility. There may be a high concentration of market capitalization and trading volume in a small number of issuers representing a limited number of industries as well as a high concentration of investors and financial intermediaries. In addition, securities markets of emerging market countries may be subject to potential market closures due to market, economic, political, regulatory, geopolitical, environmental, public health, or other conditions.

Practices in relation to settlement of securities transactions in emerging market countries involve higher risks than those in developed countries because brokers and counterparties in such countries may be less well-capitalized and custody and registration of assets in some countries may be unreliable.

Emerging market country debt is subject to high risk and may not be rated for creditworthiness by any internationally recognized credit rating organization. The issuer or governmental authority that controls the repayment of an emerging market country's debt may not be able or willing to repay the principal and/or interest when due in accordance with the terms of such debt. If a government obligor defaults on its obligation, an investor may have limited resources and may not be able to enforce a judgment against a foreign government.

A sub-set of emerging market countries are considered to have frontier markets. Frontier market countries generally have smaller, less diverse economies and less mature capital markets than larger emerging market countries, and, as a result, the risks of investing in emerging market countries are magnified in frontier market countries. Frontier markets are more susceptible to having abrupt changes in currency values, less mature markets and settlement practices, and lower trading volumes that could lead to greater price volatility and illiquidity.

Certain trading structures or protocols in some emerging markets involve the risks described above to a greater degree than in developed markets or even in other emerging markets. The Fund may, directly or indirectly (through, for example, participation notes or other types of equity-linked notes), purchase shares in mainland China-based companies that trade on Chinese stock exchanges such as the Shanghai Stock Exchange and the Shenzhen Stock Exchange ("China A-Shares") or debt securities traded on the China Interbank Bond Market ("CIBM Bonds" and with "China A-Shares, "China Connect Securities"), through a variety of mutual market access programs (collectively, "China Connect") that enable foreign investment in People's Republic of China (PRC) exchange-traded securities via investments made in Hong Kong or other locations that may in the future have China Connect programs with the PRC. Examples of China Connect programs include the Shanghai and Shenzhen-Hong Kong Stock Connect (collectively, "Stock Connect") and the China Bond Connect (the "Bond Connect"). Trades do not cross between the Shanghai and Shenzhen stock exchanges and a separate broker is assigned for each exchange. If the Fund rebalances across both exchanges, the Fund must trade out of stocks listed on one exchange with a broker and trade into stocks on the other exchange with a separate broker. As a result, the Fund may incur additional fees.

There are significant risks inherent in investing in China Connect Securities through China Connect. The China Connect programs are relatively new. There can be no assurance that China Connect programs will not be discontinued without advance notice or that future developments will not restrict or adversely affect a Fund's investments or returns through China Connect. The less developed state of PRC's investment and banking systems with respect to foreign investment subjects the settlement, clearing, and registration of China Connect Securities transactions to heightened risks. China Connect program restrictions could also limit the ability of a Fund to sell its China Connect Securities in a timely manner, or to sell them at all. For instance, China Connect programs involving Hong Kong can only operate when both PRC and Hong Kong markets are open for trading and when banking services are available in both markets on the corresponding settlement days. As such, if Hong Kong markets are closed but China Connect Securities are trading in the PRC, or where China Connect programs are closed for extended periods of time because of subsequent Hong Kong and PRC holidays (or for other reasons), a Fund may not be able to dispose of its China Connect Securities when it wants to in a timely manner, which could adversely affect the Fund's performance. Additionally, certain China Connect programs are subject to daily quota limitations on purchases of certain China Connect Securities (such as China A-Shares). Once the daily quota is reached, orders to purchase additional China A-Shares through Stock Connect will be rejected. Investment quotas are subject to change, and although the current quotas do not place limits on sales of China A-Shares or other China Connect Securities through China Connect programs, there can be no guarantee that capital controls would not be implemented that could adversely affect the Fund's ability to remove money out of China and use it for other purposes, including to meet redemptions.

China Connect Securities purchased through a China Connect program are held through a nominee structure by a Hong Kong-based depository as nominee (the "Nominee") on behalf of investors. Thus, the Fund's investments will be registered on the books of the PRC clearinghouse in the name of a Hong Kong clearinghouse, and on the books of a Hong Kong clearinghouse in the name of the Fund's Hong Kong sub-custodian, and may not be clearly designated as belonging to the Fund. The precise nature and rights of a Fund as the beneficial owner of China Connect Securities through the Nominee is not well defined under PRC law and it is not yet clear how such rights will be recognized or enforced under PRC law. The use of the nominee system also exposes the Fund to the credit risk of the depository intermediaries, and to greater risk of expropriation. Different fees, costs, and taxes are imposed on foreign investors acquiring China Connect Securities acquired through China Connect programs, and these fees, costs, and taxes may be higher than comparable fees, costs, and taxes

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imposed on owners of other securities providing similar investment exposure. Furthermore, the securities regimes and legal systems of the PRC and Hong Kong differ significantly from each other and issues may arise based on these differences. Loss of Hong Kong independence or legal distinctiveness, for example, could undermine significant benefits of the China Connect programs. Political, regulatory and diplomatic events, such as the U.S.-China "trade war" that has intensified since 2018, could have an adverse effect on the Chinese or Hong Kong economies and on investments made through China Connect programs, and thus could adversely impact a Fund investing through China Connect programs.

CIBM Bonds may also be purchased through the CIBM Direct Access Program, which is also relatively new. The CIBM Direct Access Program, established by the People's Bank of China, allows eligible foreign institutional investors to conduct trading in the CIBM, subject to other rules and regulations as promulgated by Chinese authorities. Eligible foreign institutional investors who wish to invest directly in the CIBM through the CIBM Direct Access Program may do so through a settlement agent located in China, who would be responsible for making the relevant filings and account opening with the relevant authorities. A Fund is therefore subject to the risk of default or errors on the part of such agent. Many of the same risks that apply to investments in the PRC through China Connect programs also apply to investments through the CIBM Direct Access Program.

Certain securities issuers, including issuers in certain emerging market countries, may use a structure known as a variable interest entity. A Fund's investment in such an issuer may pose additional risks because the Fund's investment is made through a holding company whose interests in the underlying business are established through contracts rather than through equity ownership. Certain Chinese companies have used variable interest entities as a means to circumvent Chinese restrictions on foreign ownership of securities in certain sectors. In such cases, the operating company is generally owned by Chinese nationals and an offshore holding company indirectly holds certain contractual rights relating to the operating company, including a contractual claim on the operating company's profits. Shares of the offshore holding company, in turn, are traded on exchanges outside of China and are available to non-Chinese investors such as the Fund. While the application of the variable interest entity structure is a longstanding industry practice in China, the Chinese government has never approved these structures. There is a risk that the Chinese government may cease to tolerate such variable interest entity structure at any time or impose new restrictions on the structure, in each case either generally or with respect to specific issuers, which could lead to significant losses with little or no recourse available. Further, in case of dispute (for example, with the Chinese owners of the operating company), the holding company's contractual claims with respect to the operating company may be deemed unenforceable in China, thus limiting the remedies and rights of investors such as the Fund. Such legal uncertainty may be exploited against the interests of the investors in the related holding company. Further, this application of the variable interest entity structure generally restricts the Fund's ability to influence the operating company through proxy voting and other means and may restrict the ability of an issuer to pay dividends to shareholders from operating company earnings. Foreign companies listed on stock exchanges in the United States, including companies using the variable interest entity structure, could also face delisting or other ramifications for failure to meet the expectations and/or requirements of the SEC, the PCAOB, or other United States regulators. In addition, legislation passed in the U.S. could cause securities of a foreign issuer, including American Depositary Receipts, to be delisted from U.S. stock exchanges if the issuer does not allow the U.S. government to inspect or investigate the auditing of its financial information. Although the requirements of this legislation apply to securities of all foreign issuers, the U.S. government has thus far limited its enforcement efforts to securities of Chinese companies. If securities are delisted, a Fund's ability to transact in such securities will be impaired, and the liquidity and market price of the securities may decline. The Fund may also need to seek other markets in which to transact in such securities, which could increase the Fund's costs.

Significant portions of the Chinese securities markets may become rapidly illiquid, as Chinese issuers have the ability to suspend the trading of their equity securities, and have shown a willingness to exercise that option in response to market volatility, epidemics, pandemics, adverse economic, market or political events, and other events. If the political climate between the U.S. and China does not improve or continues to deteriorate, if China were to attempt unification of Taiwan by force, or if other geopolitical conflicts develop or get worse, economies, markets, and individual securities may be severely affected both regionally and globally, and the value of a Fund's assets may go down.

These and other risks may exist to varying degrees in connection with investments through other trading structures, protocols and platforms in emerging markets.

**Equity Securities.** Equity securities represent an ownership interest, or the right to acquire an ownership interest, in a company or other issuer. Different types of equity securities provide different voting and dividend rights and priorities in the event of bankruptcy of the issuer. Equity securities include common stocks, preferred stocks, securities convertible into stocks, depositary receipts for such securities, equity interests in REITs, securities of investment companies, and other similar interests in an issuer. The price of an equity security fluctuates in response to issuer, market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions, as well as to investor perceptions of these conditions. Prices can decrease significantly in response to these conditions, and these conditions can affect a single issuer, issuers within a broad market sector, industry or geographic region, or the market in general. Different parts of the market and different types of securities can react differently to these conditions. For example, the stocks of growth companies can react differently from the stocks of value companies, and the stocks of large cap companies can react differently from the stocks of small cap companies. Certain changes or events, such as political, social, or economic developments, including increasing or negative interest rates or the U.S. government's inability at times to agree on a long-term budget and deficit reduction plan (which has in the past resulted and may in the future result in a government shutdown); market closures and/or trading halts; government or regulatory actions, including the imposition of tariffs or other protectionist actions and changes in fiscal, monetary, or tax policies; natural disasters; outbreaks of pandemic and epidemic diseases; terrorist attacks; war; and other geopolitical changes or events, can have a dramatic adverse effect on equity markets and may lead to periods of high volatility in an equity market or segment of an equity market. Climate change regulation (such as decarbonization legislation or other mandatory controls to reduce emissions of greenhouse gases) could significantly affect many of the companies in which the Fund invests by, among other things, increasing those companies' operating costs and capital expenditures. Equity markets may be susceptible to market manipulation or other fraudulent practices which could disrupt the orderly functioning of these markets or adversely affect the value of instruments that trade in such markets.

A widespread health crisis such as a global pandemic could cause substantial market volatility and have long-term effects on the United States and world economies and markets generally. For example, the COVID-19 pandemic resulted in significant disruptions to global business activity, including closed international borders, quarantines and travel restrictions, disruptions to business operations and supply chains, and lower consumer demand and economic output. Multiple surges in cases globally, the availability and widespread adoption of

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vaccines, and the emergence of variant strains of the virus continue to create uncertainty as to the future and long-term impacts resulting from the pandemic. Epidemics and pandemics that may arise in the future could negatively affect the global economy, as well as the economies of individual countries, the financial performance of individual companies and sectors, and the securities and commodities markets in general in significant and unforeseen ways. A health crisis may also exacerbate other pre-existing political, social and economic risks. Any such impacts could adversely affect the prices and liquidity of the Fund's investments and the Fund's performance.

**Financial Services Exposure Risk.** Events that affect the financial services sector may have a significant adverse effect on the Fund. Issuers and/or counterparties in a single industry or related industries can react similarly to market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions. Issuers and/or counterparties in the financial services sector are subject to many risks, including adverse government regulation, decreased availability and increased cost of capital, and changes in interest and/or default rates. In the event of the shutdown of certain financial institutions and disruption in the financial services sector, there can be no certainty that the actions taken by governments will be effective in mitigating the effects of financial institution failures on the economy and/or restoring public confidence in the banking financial institutions and the U.S. and global financial systems.

**Floating Rate Certificates.** Each holder of a floating rate certificate has the option at specified times to tender its certificate to the issuer or a specified third party acting as agent for the issuer for purchase at the stated amount of the certificate plus accrued interest. Floating rate certificates may be floating or variable rate securities. The issuer or third party agent may be unable to purchase the certificates on the purchase date due to a variety of circumstances, which may result in a loss of value of the certificates.

**Foreign Currencies.** Changes in currency exchange rates can significantly impact the financial condition of a company or other issuer with exposure to multiple countries. In addition, foreign securities may be denominated in foreign currencies and currencies may be purchased directly. Accordingly, changes in the values of those currencies may have a positive or negative effect on the value of securities denominated in that currency or the value of the currency itself.

While holding currencies permits an investor to take advantage of favorable movements in the applicable exchange rate, this strategy also exposes the investor to risk of loss if exchange rates move in a direction adverse to the investor's position. Such losses could reduce any profits or increase any losses sustained by the investor from the sale or redemption of securities and could reduce the dollar value of interest or dividend payments received.

The values of other currencies relative to the U.S. dollar may fluctuate in response to, among other factors, interest rate changes, intervention (or failure to intervene) by governments, central banks, or supranational entities such as the International Monetary Fund, the imposition of currency controls, tariffs, and other political or regulatory developments. Currency values can decrease significantly both in the short term and over the long term in response to these and other developments.

Some foreign countries have managed currencies, which are not free floating against the U.S. dollar. Managed currencies can experience a steep devaluation relative to the U.S. dollar. In addition, certain foreign countries may restrict the free conversion of their currencies into other currencies and certain foreign currencies may not trade outside their local country.

Although foreign currency dealers generally do not charge a fee for foreign currency transactions, they do realize a profit based on the difference between the prices at which they are buying and selling various currencies. Thus, a dealer may offer to sell a foreign currency at one rate, while offering a lesser rate of exchange should the counterparty desire to resell that currency to the dealer.

Foreign currency transactions are contracts to purchase or sell foreign currencies for settlement on a future date. Foreign currency transactions that require a specific amount of a currency to be delivered at a specific exchange rate on a specific date are referred to as deliverable forwards. Depending on time to settlement and certain other characteristics, certain deliverable forwards can be referred to as "spot" foreign currency transactions. Foreign currency transactions that do not provide for physical settlement of the two currencies but instead are settled by a single cash payment calculated as the difference between the agreed upon exchange rate and current rate at settlement based upon an agreed upon notional amount are referred to as non-deliverable forwards. Depending on whether a foreign currency transaction is deemed to be a spot, a deliverable forward or a non-deliverable forward in a particular jurisdiction, the transaction may be subject to no or different regulatory requirements, including but not limited to reporting, margin, clearing and exchange trading or trading on other public facilities. Numerous regulatory changes related to foreign currency transactions are expected to occur over time and could materially and adversely affect the ability of the Fund to enter into foreign currency transactions or could increase the cost of foreign currency transactions. In the future, certain foreign currency transactions may be required to be subject to initial as well as variation margin requirements. Foreign currency transactions that are not centrally cleared are subject to the creditworthiness of the counterparty to the foreign currency transaction (usually large commercial banks), and their values may decline substantially if the counterparty's creditworthiness deteriorates. In a cleared foreign currency transaction, performance of the transaction will be effected by a central clearinghouse rather than by the original counterparty to the transaction. Foreign currency transactions that are centrally cleared will be subject to the creditworthiness of the clearing member and the clearing organization involved in the transaction.

A "settlement hedge" or "transaction hedge" attempts to protect against an adverse change in foreign currency values between the date a security is purchased or sold and the date on which payment is made or received. Entering into a foreign currency transaction for the purchase or sale of the amount of foreign currency involved in an underlying security transaction for a fixed amount of U.S. dollars "locks in" the U.S. dollar price of the security. Foreign currency transactions to purchase or sell a foreign currency may also be used in anticipation of future purchases or sales of securities denominated in foreign currency, even if the specific investments have not yet been selected.

Foreign currency transactions can be used to hedge against a decline in the value of existing investments denominated in foreign currency. For example, if an investor owned securities denominated in pounds sterling, the investor could enter into a forward contract to sell pounds sterling in return for U.S. dollars to hedge against possible declines in the pound's value. Such a hedge, sometimes referred to as a "position hedge," would tend to offset both positive and negative currency fluctuations, but would not offset changes in security values caused by other factors. An investor could also hedge the position by selling another currency expected to perform similarly to the pound sterling. This type of hedge, sometimes referred to as a "proxy hedge," could offer advantages in terms of cost, yield, or efficiency, but generally would not hedge currency exposure as effectively as a direct hedge into U.S. dollars. Proxy hedges may result in losses if the currency used to hedge does not perform similarly to the currency in which the hedged securities are denominated.

Foreign currency transactions can also be used to shift investment exposure from one currency into another. This may include shifting exposure from U.S. dollars to a foreign currency or from one foreign currency to another foreign currency. This type of strategy, sometimes

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known as a "cross-hedge," will tend to reduce or eliminate exposure to the currency that is sold, and increase exposure to the currency that is purchased, much as if a Fund had sold a security denominated in one currency and purchased an equivalent security denominated in another. Cross-hedges protect against losses resulting from a decline in the hedged currency, but will cause a Fund to assume the risk of fluctuations in the value of the currency it purchases.

Swap agreements, indexed securities, hybrid securities and options and futures contracts relating to foreign currencies can be used for the same purposes.

Successful use of currency management strategies will depend on MFS' skill in analyzing currency values. Currency management strategies may increase the volatility of a Fund's returns and could result in significant losses to a Fund if currencies do not perform as MFS anticipates. For example, if a currency's value rose at a time when MFS had hedged a Fund by selling that currency in exchange for dollars, a Fund would not participate in the currency's appreciation. If MFS hedges currency exposure through proxy hedges, a Fund could realize currency losses from both the hedge and the security position if the two currencies do not move in tandem. Similarly, if MFS increases a Fund's exposure to a foreign currency and that currency's value declines, a Fund will realize a loss. There is no assurance that MFS' use of currency management strategies will be advantageous to a Fund or that it will hedge at appropriate times.

**Foreign Markets.** Investments in securities of foreign issuers, securities of companies with significant foreign exposure, and foreign currencies may involve significant risks. Foreign investments involve risks relating to local political, economic, regulatory, or social developments, military action or unrest, adverse diplomatic developments, or government involvement in the economy or in the affairs of specific companies or industries (including wholly or partially state-owned enterprises), and may be affected by actions of U.S. and foreign governments adverse to the interests of U.S. investors. Such actions may include expropriation or nationalization of assets, confiscatory taxation, imposition of tariffs or other economic and trade sanctions, embargoes, restrictions on U.S. investment or on the ability to repatriate assets or convert currency into U.S. dollars, entering or exiting trade or other intergovernmental agreements, or other government action, intervention, or restriction. Economic or other sanctions imposed on a foreign country or issuer by the United States, or on the United States or issuers by a foreign country, could impair a Fund's ability to buy, sell, hold, receive, deliver, or otherwise transact in certain securities. Sanctions could also affect the value and/or liquidity of a foreign security. The debt instruments of foreign governments and their agencies and instrumentalities may or may not be supported by the full faith and credit of the foreign government. Additionally, governmental issuers of foreign debt securities may be unwilling to pay interest and repay principal when due and may require that the conditions for payment be renegotiated. In addition, the value of securities denominated in foreign currencies and of dividends and interest paid with respect to such securities will fluctuate based on the relative strength of the U.S. dollar.

Foreign markets, while growing in volume and sophistication, may not be as developed as those in the United States, and securities of some foreign issuers may be less liquid and more volatile than securities of comparable U.S. issuers. Foreign trading, settlement and custodial practices (including those involving settlement where Fund assets may be released prior to receipt of payment) may be less developed than those in U.S. markets, and may result in increased risk or substantial delays in the event of a failed trade or the insolvency of, or breach of duty by, a foreign broker/dealer, securities depository, or foreign subcustodian. In addition, the costs associated with foreign investments, including withholding or other taxes, brokerage commissions, and custodial costs, are generally higher than with U.S. investments. Some countries limit the ability to profit from short-term trading (as defined in that country).

Foreign markets may offer less protection to investors than U.S. markets. Foreign issuers may not be bound by uniform accounting, auditing, and financial reporting requirements and standards of practice comparable to those applicable to U.S. issuers. Adequate public information on foreign issuers may not be available, and it may be difficult to secure dividends and obtain information regarding corporate actions on a timely basis. Legislation passed in the United States effectively prohibits securities of foreign issuers (including those based in China) from being listed on a U.S. securities exchange or traded in the United States over-the-counter market if, because of a position taken by an authority in a foreign jurisdiction, the PCAOB is unable to inspect or investigate the issuer's audit work papers over a certain period of time. To the extent a Fund invests in the securities of an impacted issuer, delisting or other prohibitions on trading in the securities of the issuer could impair the Fund's ability to transact in such securities and significantly impact a security's liquidity and market price (and thus the Fund's net asset value). The Fund would also need to seek other markets in which to transact in such securities, which could increase the Fund's trading costs.

Foreign securities may trade on markets that are closed when the U.S. markets are open. As a result, accurate pricing information based on foreign market prices may not always be available. In general, there may be less overall governmental supervision and regulation of securities exchanges, brokers, and listed companies than in the United States. Over-the-counter markets tend to be less regulated than stock exchange markets and, in certain countries, may be totally unregulated. Regulatory enforcement may be influenced by economic or political concerns, and investors may have difficulty enforcing their legal rights in foreign countries. Investors in foreign countries may have limited rights and few practical remedies to pursue shareholder claims, including class actions or fraud claims, and the ability of the SEC, the U.S. Department of Justice and other U.S. authorities to bring and enforce actions against foreign issuers or foreign persons is limited.

Some foreign investments impose restrictions on transfer within the United States or to U.S. persons. Although investments subject to such transfer restrictions may be marketable abroad, they may be less liquid than foreign investments that are not subject to such restrictions.

Foreign countries may have reporting requirements with respect to the ownership of securities, and those reporting requirements may be subject to interpretation or change without prior notice to investors. While the Fund makes reasonable efforts to stay informed of foreign reporting requirements relating to the Fund's non-U.S. portfolio securities, no assurance can be given that the Fund will satisfy applicable foreign reporting requirements at all times.

Global economies and financial markets are interconnected, and conditions in one country, region, or market could adversely impact economic conditions, market conditions, and issuers in other countries, regions, or markets. However, the interconnectedness of economies and/or markets may be diminishing, which may also result in widespread adverse economic impacts that cannot be foreseen at this time. For example, a member state's decision to leave the European Monetary Union and/or the European Union, or any increased uncertainty as to the status of such entities, could have significant adverse effects on global currency and financial markets, and on the values of the Fund's investments. In 2020, the United Kingdom officially withdrew from the European Union (commonly known as "Brexit"). The United Kingdom and European Union reached a preliminary trade agreement, which became effective on January 1, 2021, regarding the terms of their future trading relationship relating principally to the trading of goods; however, negotiations are ongoing for matters not covered by the agreement, such as the trade of financial services. Due to uncertainty of the current political environment, it is not possible to foresee the form

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or nature of the future trading relationship between the United Kingdom and the European Union. The longer term economic, legal, political and social framework to be put in place between the United Kingdom and the European Union remains unclear and the ongoing political and economic uncertainty and periods of exacerbated volatility in both the United Kingdom and in wider European markets may continue for some time.

Any further exits from the European Union, or the possibility of such exits, or the abandonment of the euro, may cause additional market disruption globally and introduce new legal and regulatory uncertainties. Among other things, a member state's decision to leave the European Union or abandon the euro could result in increased market volatility and illiquidity; fluctuations in asset values; fluctuations in exchange rates; decreased liquidity of investments located, traded, or listed within the European Union, the United Kingdom, or elsewhere; changes in the willingness or ability of financial and other counterparties to enter into transactions or the price and terms on which other counterparties are willing to transact; and/or changes in legal and legal and regulatory regimes to which Fund investments are or become subject. Additionally, certain European countries have developed increasingly strained relationships with the U.S., which could adversely affect European issuers that rely on the U.S. for trade. The national politics of certain countries in Europe have been unpredictable and subject to influence by disruptive political groups and ideologies, including for example, secessionist movements. The governments of European countries may be subject to change and such countries may experience social and political unrest. Unanticipated political or social developments may result in sudden and significant investment losses to the Fund. The occurrence of terrorist incidents or war in the European region also could negatively impact financial markets. The impact of these events could be significant and could adversely affect the value and liquidity of the Fund investments.

In 2025, a change in the U.S. presidential administration has resulted in significant impacts to international trade relations, tax and immigration policies, and other aspects of the national and international political and financial landscape, which could affect, among other things, the relative strength of the U.S. dollar, inflation, and the securities markets generally. Some countries, including the United States, have adopted more protectionist trade policies. The rise in protectionist trade policies, slowing economic growth, changes to some major international trade agreements, risks associated with trade agreements between the United States and the European Union, and the risks associated with trade negotiations between the United States and China, could affect the economies of many nations in ways that cannot necessarily be foreseen at the present time.

Russia's military action in Ukraine has, and may continue to have, adverse effects on the regional and the global financial markets and economies. In addition, sanctions imposed on Russia, Russian individuals, including politicians, and Russian corporate and banking entities by the United States and other countries, and any sanctions imposed in the future, may have a significant adverse impact on the Russian economy and related markets. Such actions may also result in a decline in the value and liquidity of Russian securities and a weakening of the ruble, and could impair the Fund's ability to buy, sell, receive, or deliver Russian securities. In addition, securities market trading halts related to the conflict could adversely impact the value and liquidity of the Fund's holdings and could impair the Fund's ability to transact in and/or value portfolio securities. Additionally, Russia has taken retaliatory actions, including preventing repatriation of capital by U.S. and other investors. The ramifications of the ongoing conflict and related sanctions may negatively impact other regional and global financial markets (including in Europe, Asia, and the United States), companies in other countries (including those that have done business in Russia), various sectors, industries and markets for securities and commodities, such as oil and natural gas, and global supply chains, food supplies, inflation and global growth.

Furthermore, the prolonged conflict between Hamas and Israel, and the potential expansion of the conflict in the surrounding areas and the involvement of other nations in such conflict could further destabilize the Middle East region and introduce new uncertainties in global markets, including the oil and natural gas markets.

The price and liquidity of the Fund's investments may fluctuate widely as a result of these and other geopolitical conflicts and related events. The extent and duration of any military conflict or future escalation of such hostilities (including cyberattacks), the extent and impact of existing and future sanctions, market disruptions and volatility, and the result of any diplomatic negotiations cannot be predicted. These and any related or similar future events could have a significant adverse impact on Fund performance and the value of an investment in the Fund.

**Futures Contracts**. A futures contract is an agreement between two parties to buy or sell in the future a specific quantity of an asset, currency, interest rate, index, commodity, instrument or other indicator at a specific price and time. Futures contracts are standardized, exchange-traded contracts and the price at which the purchase and sale will take place is fixed when the buyer and seller enter into the contract. The value of a futures contract typically fluctuates in correlation with the increase or decrease in the value of the underlying indicator. The buyer of a futures contract enters into an agreement to purchase the underlying indicator on the settlement date and is said to be "long" the contract. The seller of a futures contract enters into an agreement to sell the underlying indicator on the settlement date and is said to be "short" the contract. Futures on indexes and futures not calling for physical delivery of the underlying indicator will be settled through cash payments rather than through delivery of the underlying indicator.

If a fund is the purchaser or seller of a futures contract, the fund is required to deposit "initial margin" with a futures commission merchant ("FCM") when the futures contract is entered into. Initial margin is typically calculated as a percentage of the contract's notional amount. The minimum margin required for a futures contract is set by the exchange on which the contract is traded and may be increased by the FCM or the exchange during the term of the contract. A futures contract held by a Fund is valued daily at the official settlement price of the exchange on which it is traded. Each day a fund pays or receives cash, called "variation margin," equal to the daily change in value of the futures contract.

The risk of loss in trading futures contracts can be substantial, because of the low margin required, the extremely high degree of leverage involved in futures pricing, and the potential high volatility of the futures markets. As a result, a relatively small price movement in a futures position may result in immediate and substantial loss (or gain) to the investor, and with respect to certain futures contracts, futures positions may theoretically result in unlimited losses. In the event of adverse price movements, an investor would continue to be required to make daily cash payments equal to the daily change in value of the futures contract. In addition, on the settlement date, an investor in physically settled futures may be required to make delivery of the indicators underlying the futures positions it holds.

Futures can be sold until their last trading dates, or can be closed out by offsetting purchases or sales of futures contracts before then if a liquid market is available. It may not be possible to liquidate or close out a futures contract at any particular time or at an acceptable price and an investor would remain obligated to meet margin requirements until the position is closed. Moreover, most futures exchanges limit the amount of fluctuation permitted in futures contract prices during a single trading day. The daily limit establishes the maximum amount that

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the price of a futures contract may vary either up or down from the previous day's settlement price at the end of a trading session. Once the daily limit has been reached in a particular type of contract, no trades may be made on that day at a price beyond that limit. The daily limit governs only price movement during a particular trading day and therefore does not limit potential losses, because the limit may prevent the liquidation of unfavorable positions. Futures contract prices have occasionally moved to the daily limit for several consecutive trading days with little or no trading, thereby preventing prompt liquidation of future positions and subjecting some futures traders to substantial losses. The inability to close futures positions also could have an adverse impact on the ability to hedge a portfolio investment or to establish a substitute for a portfolio investment.

Exchanges may cancel trades in limited circumstances, for example, if the exchange believes that allowing such trades to stand as executed could have an adverse impact on the stability or integrity of the market. Any such cancellation may adversely affect the performance of the Fund. In addition, the Fund's FCM may limit the Fund's ability to invest in certain futures contracts. Such restrictions may adversely affect the Fund's performance and its ability to achieve its investment objectives.

The CFTC, and certain foreign regulators, and many exchanges have established (and continue to evaluate and revise) speculative position limits, referred to as "position limits," on the maximum speculative positions which any person, or group of persons acting in concert, may hold or control in particular futures and options on futures contracts. In addition, U.S. federal position limits apply to swaps that are economically equivalent to futures contracts on certain agricultural, metals and energy commodities. All positions owned or controlled by the same person or entity, even if in different accounts, must be aggregated for purposes of determining whether the applicable position limits have been exceeded, unless an exemption applies. Thus, even if the Fund does not intend to exceed applicable position limits, it is possible that positions held by different clients managed by MFS and its affiliates may be aggregated for this purpose. Any modification of trading decisions or elimination of open positions that may be required to avoid exceeding such limits may adversely affect the performance of the Fund. A violation of position limits could also lead to regulatory action materially adverse to the Fund's investment strategy. The Fund may also be affected by other regimes, including those of the European Union and United Kingdom, and trading venues that impose position limits on commodity derivative contracts.

Futures are subject to the creditworthiness of the FCM(s) and clearing organizations involved in the transaction.

Foreign futures contracts may not be subject to the same level of regulation as U.S. futures contracts, and foreign futures exchanges may follow trading, settlement, and margin procedures that are different from those for U.S. exchanges. Futures contracts traded outside the United States may involve greater risk of loss than U.S. traded contracts, including potentially greater risk of losses due to insolvency of a futures broker, clearing member, clearing house, or other party that may owe margin to a fund.

If MFS attempts to use a futures contract as a hedge against, or as a substitute for, a portfolio investment, the futures position may not correlate as expected with the portfolio investment, resulting in losses to the Fund. While hedging strategies involving futures products can reduce the risk of loss, they can also reduce the opportunity for gain or even result in losses by offsetting favorable price movements in other Fund investments.

**Hybrid Instruments**. Hybrid instruments are generally considered derivatives and combine the elements of swaps, futures contracts, or options with those of debt, preferred equity or a depository instrument. A hybrid instrument may be a debt instrument, preferred stock, warrant, convertible security, certificate of deposit or other evidence of indebtedness on which a portion of or all interest payments, and/or the principal or stated amount payable at maturity, redemption or retirement, is determined by reference to prices, changes in prices, or differences between prices, of securities, currencies, intangibles, goods, commodities, indexes, economic factors or other measures, including interest rates, currency exchange rates, or commodities or securities indices, or other indicators.

The risks of investing in hybrid instruments reflect a combination of the risks of investing in securities, swaps, options, futures and currencies. An investment in a hybrid instrument may entail significant risks that are not associated with a similar investment in a traditional debt instrument. The risks of a particular hybrid instrument will depend upon the terms of the instrument, but may include the possibility of significant changes in the benchmark(s) or the prices of the underlying indicators to which the instrument is linked. Such risks generally depend upon factors unrelated to the operations or credit quality of the issuer of the hybrid instrument, which may not be foreseen by the purchaser, such as economic and political events, the supply and demand profiles of the underlying indicators and interest rate movements. Hybrid instruments may be highly volatile.

Hybrid instruments are potentially more volatile and carry greater market risks than traditional debt instruments. Depending on the structure of the particular hybrid instrument, changes in a benchmark, underlying asset or indicator may be magnified by the terms of the hybrid instrument and have an even more dramatic and substantial effect upon the value of the hybrid instrument. Also, the prices of the hybrid instrument and the benchmark, underlying asset or indicator may not move in the same direction or at the same time.

Hybrid instruments may bear interest or pay preferred dividends at below market (or even relatively nominal) rates. Alternatively, hybrid instruments may bear interest at above market rates but bear an increased risk of principal loss (or gain). Leverage risk occurs when the hybrid instrument is structured so that a given change in a benchmark or underlying indicator is multiplied to produce a greater value change in the hybrid instrument, thereby magnifying the risk of loss as well as the potential for gain.

If MFS attempts to use a hybrid instrument as a hedge against, or as a substitute for, a portfolio investment, the hybrid instrument may not correlate as expected with the portfolio investment, resulting in losses to the Fund. While hedging strategies involving hybrid instruments can reduce the risk of loss, they can also reduce the opportunity for gain or even result in losses by offsetting favorable price movements in other Fund investments.

Hybrid instruments may also carry liquidity risk since the instruments are often "customized" to meet the portfolio needs of a particular investor, and therefore, the number of investors that are willing and able to buy such instruments in the secondary market may be smaller than that for more traditional debt instruments. Under certain conditions, the redemption value of such an investment could be zero. In addition, hybrid instruments are subject to the creditworthiness of the issuer of the hybrid instrument, and their values may decline substantially if the issuer's creditworthiness deteriorates. Hybrid instruments also may not be subject to regulation by the CFTC, which generally regulates the trading of commodity futures, options, and swaps by and to U.S. persons, the SEC, which regulates the offer and sale of securities by and to U.S. persons, or any other governmental regulatory authority.

**Inflation.** Inflation risk is the uncertainty over the future real value (after inflation) of an investment. Inflation rates may change frequently and drastically as a result of various factors, including unexpected shifts in the domestic or global economy, and the Fund's investments may

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not keep pace with inflation, which may result in losses to Fund investors or adversely affect the real value of shareholders' investments in the Fund. Monetary policy measures have in the past, and may in the future, exacerbate risks associated with rising interest rates. In periods of rising interest rates, fixed income securities markets may experience heightened levels of interest rate volatility and liquidity risk.

**Inflation-Indexed Bonds**. Inflation-indexed bonds are debt instruments whose principal and/or interest value are adjusted periodically according to a rate of inflation (usually a consumer price index). Two structures are most common. The U.S. Treasury and some other issuers use a structure that accrues inflation into the principal value of the bond. Most other issuers pay out the inflation accruals as part of a semiannual coupon.

U.S. Treasury Inflation Protected Securities ("TIPS") currently are issued with maturities of five, ten, or thirty years, although it is possible that securities with other maturities will be issued in the future. The principal amount of TIPS adjusts for inflation, although the inflation-adjusted principal is not paid until maturity. Semiannual coupon payments are determined as a fixed percentage of the inflation-adjusted principal at the time the payment is made. Increases in the principal value of TIPS due to inflation are considered taxable ordinary income. Any increase in the principal amount of an inflation-indexed debt security will be considered taxable ordinary income, even though the Fund will not receive the principal until maturity. Additionally, a Consumer Price Index swap can potentially lose value if the realized rate of inflation over the life of the swap is less than the fixed market implied inflation rate (fixed breakeven rate) that the investor agrees to pay at the initiation of the swap. Deflation adjustments offset taxable ordinary income to the extent that they do not exceed all current and prior income inclusions. However, if deflation adjustments were to exceed all current and prior income inclusions, any remaining excess would be carried forward to offset future income inclusions in subsequent years. Any excess deflation adjustment remaining at disposition or maturity would reduce capital gain or increase capital loss.

If the rate measuring inflation falls, the principal value of inflation-indexed bonds will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. At maturity, TIPS are redeemed at the greater of their inflation-adjusted principal or at the par amount at original issue. If an inflation-indexed bond does not provide a guarantee of principal at maturity, the adjusted principal value of the bond repaid at maturity may be less than the original principal.

The value of inflation-indexed bonds is expected to change in response to changes in real interest rates. Real interest rates in turn are tied to the relationship between nominal interest rates and the rate of inflation. For example, if inflation were to rise at a faster rate than nominal interest rates, real interest rates would likely decline, leading to an increase in value of inflation-indexed bonds. In contrast, if nominal interest rates increase at a faster rate than inflation, real interest rates would likely rise, leading to a decrease in value of inflation-indexed bonds.

While these securities, if held to maturity, are expected to be protected from long-term inflationary trends, short-term increases in inflation may lead to a decline in value. If nominal interest rates rise due to reasons other than inflation (for example, due to an expansion of non-inflationary economic activity), investors in these securities may not be protected to the extent that the increase in rates is not reflected in the bond's inflation measure.

The inflation adjustment of TIPS is tied to the Consumer Price Index for Urban Consumers ("CPI-U"), which is calculated monthly by the U.S. Bureau of Labor Statistics. The CPI-U is a measurement of price changes in the cost of living, made up of components such as housing, food, transportation, and energy. There can be no assurance that the CPI-U will accurately measure the real rate of inflation in the prices of goods and services. In addition, inflation-indexed bonds are subject to risks related to the availability, discontinuation, substitution, or material alternation of the applicable measure used in adjusting for inflation. Such events could have a material adverse impact on the Fund's investments and performance.

**Interfund Borrowing and Lending Program.** Pursuant to an exemptive order issued by the SEC, the Fund may borrow money from and/or lend money to other Funds advised by MFS and for which MFD acts as the principal underwriter. Any loans under the program will be set at an interest rate that is the average of the highest rate available to a lending MFS Fund from an investment in overnight repurchase agreements and the approximate lowest rate at which bank short-term loans would be available to a borrowing MFS Fund. A borrowing MFS Fund may have to borrow from a bank at a higher rate if an interfund loan is called or not renewed. Any delay in repayment of an interfund borrowing to a lending MFS Fund could result in lost investment opportunities or borrowing costs.

**Large Shareholder Risk.** From time to time, shareholders of the Fund (which may include institutional investors, financial intermediaries, or other MFS Funds) may make (individually or collectively) relatively large redemptions or purchases of Fund shares. These transactions may cause the Fund to sell securities or invest additional cash, as the case may be, at disadvantageous prices. While it is impossible to predict the overall impact of these transactions over time, there could be adverse effects on the Fund's performance to the extent that the Fund may be required to sell securities or invest cash at times it would not otherwise do so. Redemptions of a large number of shares also may increase transaction and other costs or have adverse tax consequences for shareholders of the Fund by requiring a sale of portfolio securities. The effects of taxable income and/or gains resulting from large redemptions of Fund shares would particularly impact non-redeeming shareholders who do not hold their Fund shares in a tax-advantaged or tax-exempt vehicle. To the extent that such transactions result in short-term capital gains, such gains will generally be taxed at the ordinary income rate for shareholders who hold Fund shares in a taxable vehicle. In addition, a large redemption could result in the Fund's current expenses being allocated over a smaller asset base, leading to an increase in the Fund's expense ratio. Purchases of a large number of shares may adversely affect the Fund's performance to the extent that it takes time to invest new cash and the Fund maintains a larger cash position than it ordinarily would. A number of circumstances may cause the Fund to experience large redemptions or purchases, such as changes in the eligibility criteria for the Fund or a share class of the Fund; liquidations, reorganizations, repositionings, or other announced Fund events; or changes in investment objectives, strategies, policies, risks or investment personnel.

**Lending**. The Fund may not lend any security or make any other loan, if as a result, more than 33 1/3% of its total assets would be lent to other parties. This limitation does not apply to the purchase of debt instruments, money market instruments, repurchase agreements, loans, or other direct indebtedness.

**Lending of Portfolio Securities**. Portfolio securities may be lent to approved entities, including banks, broker/dealers and their affiliates, and would be required to be secured by collateral in cash, an irrevocable letter of credit, or U.S. Government securities maintained on a current basis at an amount generally at least equal to the market value of the securities loaned. When one party lends portfolio securities to another party, the lender has the right to call the loan and obtain the securities loaned at any time on customary industry settlement notice (which will not usually exceed five business days). For the duration of a loan, the borrower pays the lender an amount equal to any interest or dividends

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received on the securities loaned. The lender also receives a fee from the borrower or compensation from the investment of the collateral, less a fee paid to the borrower (if the collateral is in the form of cash). The lender does not, however, have the right to vote any securities having voting rights during the existence of the loan, but it can call the loan in anticipation of an important vote to be taken among holders of the securities or of the giving or withholding of their consent on a material matter affecting the investment; however, it is sometimes not feasible, particularly in the case of foreign securities, to recall the securities in time to vote the shares. The Fund's performance will continue to reflect changes in the value of the securities loaned and will also reflect the receipt of interest, through investment of cash collateral by the Fund or a fee. If the borrower defaults on its obligation to return the securities loaned because of insolvency or other reasons, the lender may not be able to recover the securities loaned or gain access to the collateral. These delays and costs could be greater for foreign securities. If the lender is not able to recover the securities loaned, the lender may sell the collateral and purchase a replacement investment in the market. The value of the collateral could decrease below the value of the replacement investment and related transaction costs by the time the replacement investment is purchased. The Fund bears the risk of any investment loss from cash received as collateral that is invested in other eligible securities, including shares of a money market fund. The Fund engages securities lending agents to arrange loans of the portfolio securities. The Fund pays a fee to such agents.

Services provided by the securities lending agents include locating borrowers; evaluating the initial and ongoing creditworthiness of borrowers; determining and monitoring the value of loaned securities and collateral; monitoring collateral requirements and collecting additional collateral as necessary; collateral transfer; cash collateral management; negotiation of loan terms; selection of securities to be loaned; recordkeeping and reporting; monitoring lending restrictions; monitoring for loan position modifications due to corporate actions; monitoring distribution activity and delivering any distributions from securities on loan; monitoring proxy votes related to U.S. loaned securities; and arranging for the return of loaned securities at loan termination or as otherwise required.

Regulations require certain bank-regulated counterparties and certain of their affiliates to include in certain financial contracts, including many securities lending agreements, terms that delay or restrict the rights of counterparties, such as the Fund, to terminate such agreements, foreclose upon collateral, exercise other default rights or restrict transfers of credit support in the event that the counterparty and/or its affiliates are subject to certain types of resolution or insolvency proceedings. It is possible that these requirements, as well as potential additional government regulation and other developments in the market, could adversely affect a Fund's ability to terminate existing securities lending agreements or to realize amounts to be received under such agreements in the event the counterparty or its affiliate becomes subject to a resolution or insolvency proceeding.

The SEC also adopted a rule that will require reporting and public disclosure of securities loan transaction information (not including party names); this may include, but is not limited to, information about securities loans entered into in connection with short sales. Compliance with this SEC rule is expected in early 2026 unless the compliance date is delayed. In addition, other non-U.S. jurisdictions (such as the European Union and the United Kingdom) where the Fund may trade have reporting requirements.

Income and fees related to securities lending activities for the Fund's most recent fiscal year are set forth in APPENDIX M.

**Leveraging.** Certain transactions and investment strategies, including when-issued, delayed delivery, and forward commitment purchases, mortgage dollar rolls, and some derivatives, can result in leverage. Leverage involves investment exposure in an amount exceeding the initial investment. In transactions involving leverage, a relatively small change in an underlying indicator can lead to significantly larger losses to the Fund. Leverage can cause increased volatility by magnifying gains or losses.

**Liquidity.** Certain investments and types of investments are subject to restrictions on resale, may trade in the over-the-counter market, or may not have an active trading market due to adverse market, economic, industry, political, regulatory, geopolitical and other conditions, including trading halts, sanctions, or wars. Investors trying to sell large quantities of a particular investment or type of investment, or lack of market makers or other buyers for a particular investment or type of investment may also adversely affect liquidity. At times, all or a significant portion of a market may not have an active trading market. Without an active trading market where frequent and large purchase and sale transactions of a security occur without significantly affecting the price of that security, it may be difficult to value and not possible to sell these investments and the Fund may have to sell certain of these investments at a price or time that is not advantageous in order to meet redemptions or other cash needs.

The Fund has implemented a liquidity risk management program pursuant to Rule 22e-4 under the 1940 Act that MFS believes is reasonably designed to assess and manage the risk that the Fund could not meet requests to redeem shares issued by the Fund without significant dilution of the remaining investors' interests in the Fund. In accordance with Rule 22e-4, the Fund may not acquire any illiquid investment if, immediately after the acquisition, the Fund would have invested more than 15% of its net assets in illiquid investments. In the event the Fund's illiquid investments exceed 15% of the Fund's net assets, MFS will take certain actions, including reporting the occurrence to the Board and providing the Board with information regarding how MFS plans to bring the Fund's illiquid investments to or below 15% of the Fund's net assets within a reasonable time. While the Fund's liquidity risk management program attempts to assess and manage liquidity risk, there is no guarantee it will be effective in its operations and may not reduce the liquidity risk inherent in a Fund's investments.

**Loans and Other Direct Indebtedness.** Loans and other direct indebtedness are interests in amounts owed by corporations, governmental or other borrowers to lenders or lending syndicates (loans and loan participations), to suppliers of goods and services (trade claims and other receivables), or to other parties. Some loans may be unsecured in part or in full. Loans may be in default at the time of purchase. Loans that are fully secured should protect the purchaser to a greater extent than unsecured loans in the event of nonpayment of scheduled interest or principal. However, there can be no assurance that the liquidation of collateral acquired in connection with the default of a secured loan would satisfy the borrower's obligation, or that such collateral could be liquidated.

Loans generally are made to finance internal growth, mergers, acquisitions, stock repurchases, leveraged buy-outs or other corporate activities. Such loans typically are originated, negotiated and structured by a syndicate of lenders represented by an agent lender that has negotiated and structured the loan and that is responsible for collecting interest and principal payments and other amounts due on behalf of all of the lenders in the syndicate, and for enforcing the lenders' rights against the borrower. Typically, the agent is given broad discretion in monitoring the borrower's performance and is obligated to use the same care it would use in the management of its own property. Upon an event of default, the agent typically will enforce the loan agreement after instruction from the lenders. The borrower compensates the agent for these services. This compensation may include special fees paid when the loan is structured or funded and other fees paid on a continuing basis. The typical practice of an agent or a lender to rely exclusively or primarily on reports from the borrower involves a risk of fraud by the borrower.

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If an agent becomes insolvent, or has a receiver, conservator or similar official appointed for it by an appropriate authority, or if it becomes a debtor in a bankruptcy proceeding, the agent's appointment may be terminated, and a successor agent typically may be appointed by the lenders. If an appropriate authority determines that assets held by the agent for the benefit of lenders or purchasers of loans are subject to the claims of the agent's general or secured creditors, then such lenders or purchasers might incur certain costs and delays in realizing payment on a loan or suffer a loss of principal and/or interest. Furthermore, in the event of the borrower's bankruptcy or insolvency, the borrower's obligation to repay a loan may be subject to certain defenses that the borrower can assert as a result of improper conduct by the agent.

Loans may be acquired by participating directly in a lending syndicate as a lender. Alternatively, loans or an interest in loans may be acquired by novation, by assignment or by participation from members of the lending syndicate or from other participants. In a novation or an assignment, the acquirer assumes all of the rights of the lender in the loan or of the participant in the participants' portion of the loan and, in the case of a novation or an assignment from a member of the lending syndicate, becomes a party of record with respect to the loan. In a participation, the acquirer purchases a portion of the lender's or the participants' interest in the loan, but has no direct contractual relationship with the borrower. An investment in a loan by participation gives rise to several risks. The acquirer must rely on another party not only for the enforcement of the acquirer's rights against the borrower, but also for the receipt and processing of principal, interest or other payments due under the loan and may be subject to the credit risk of the other party in addition to the borrower. The acquirer may be subject to delays, expenses, and risks that are greater than those that would be involved if the acquirer could enforce its rights directly against the borrower. In addition, under the terms of a participation agreement, the acquirer may be regarded as a creditor of the seller of the participation interest (rather than of the borrower), so that the acquirer also may be subject to the risk that such seller could become insolvent. A participation agreement also may limit the rights of the acquirer to vote on changes that may be made to the underlying loan agreement, such as waiving a breach of a covenant.

Direct indebtedness includes trade or other claims against companies, which generally represent monies owed by such companies to suppliers of goods or services. Such claims may be purchased when such companies are in default.

The ability to receive payments of principal and interest on loans and other direct indebtedness will depend primarily on the financial condition of the borrower. Because an acquirer may be required to rely on another party to collect and to pass on to it amounts payable with respect to the loan or other direct indebtedness and to enforce the acquirer's rights under the loan or other direct indebtedness, an insolvency, bankruptcy or reorganization of such other party may delay or prevent the acquirer from receiving such amounts. The highly leveraged nature of many loans and other direct indebtedness may make such loans and other direct indebtedness especially vulnerable to adverse changes in economic or market conditions.

Revolving credit facilities and other standby financing commitments obligate the purchaser to fund additional cash on a certain date or on demand. A revolving credit facility differs from other types of financing commitments in that as the borrower repays the loan, an amount equal to the repayment may be borrowed again during the term of the revolving credit facility. These commitments may have the effect of requiring a purchaser to increase its investment in a company at a time when the purchaser might not otherwise decide to do so (including at a time when the company's financial condition makes it unlikely that such amounts will be repaid).

Historically, loans normally have not been registered with the SEC or any state securities commission or listed on any securities exchange. As a result, the amount of public information available about a specific loan historically has been less extensive than if the loan were registered or exchange traded. Loans may also not be considered "securities," and purchasers may not be entitled to rely on the anti-fraud and other protections of the federal securities laws.

Floating rate loans generally are subject to legal or contractual restrictions on resale. Floating rate loans currently are not listed on any securities exchange or automatic quotation system. As a result, no active market may exist for some floating rate loans, and to the extent a secondary market exists for other floating rate loans, such market may be subject to irregular trading activity, wide bid/ask spreads and extended trade settlement periods. Additionally, the supply of floating rate loans may be limited from time to time due to a lack of sellers in the market for existing floating rate loans or to the number of new floating rate loans currently being issued. As a result, the floating rate loans available for purchase may be of lower quality or may have higher prices.

With respect to its management of investments in bank loans, MFS will normally seek to avoid receiving material, non-public information (MNPI) about the issuers of bank loans being considered for acquisition by the Fund or held by the Fund. In many instances, borrowers may offer to furnish MNPI to prospective investors, and to holders, of the issuer's loans. MFS' decision not to receive MNPI may place MFS at a disadvantage relative to other investors in loans (which could have an adverse effect on the prices the Fund pays or receives when buying or selling loans). Also, in instances where holders of loans are asked to grant amendments, waivers or consent, MFS' ability to assess their significance or desirability may be adversely affected. For these and other reasons, it is possible that MFS' decision not to receive MNPI under normal circumstances could adversely affect the Fund's investment performance.

Notwithstanding its intention generally not to receive MNPI with respect to its management of investments in loans, MFS may from time to time come into possession of MNPI about the issuers of loans that may be held by the Fund. Possession of such information may in some instances occur despite MFS' efforts to avoid such possession, but in other instances MFS may choose to receive such information (for example, in connection with participation in a creditors' committee with respect to a financially distressed issuer). As, and to the extent, required by applicable law, MFS' ability to trade in these loans for the account of the Fund could potentially be limited by its possession of such information. Such limitations on MFS' ability to trade could have an adverse effect on the Fund by, for example, preventing the Fund from selling a loan that is experiencing a material decline in value. In some instances, these trading restrictions could continue in effect for a substantial period of time.

**Master Limited Partnerships**. Master limited partnerships are limited partnerships in which ownership interests are publicly traded. Master limited partnerships typically own interests in properties or businesses related to the oil and gas industries, although they may own other types of investments. Investments in master limited partnerships are subject to similar risks to those associated with the specific industry or industry in which the partnership invests, such as the risk of investing in the real estate or oil and gas industries. In addition, investments in master limited partnerships are subject to the risks of investing in a partnership, including limited control and voting rights on matters affecting the partnership and fewer investor protections compared to corporations.

**MFS Funds-of-Funds Conflict of Interest Risk**. In managing MFS Fund-of-Funds and underlying funds, MFS is subject to conflicts of interest in selecting and substituting underlying funds for which it is the adviser (e.g., because the management fees paid by some underlying

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funds are higher than the management fees paid by other underlying funds), and, more generally, in fulfilling its obligations with respect to both the MFS Fund-of-Funds and the underlying funds. Therefore, a conflict of interest exists because MFS has an incentive to allocate fund assets into underlying funds that produce the greatest fees for MFS; however, MFS is legally obligated to act in the best interests of both the MFS Fund-of-Funds and the underlying funds.

**Money Market Instruments.** Money market instruments, or short-term debt instruments, consist of obligations such as commercial paper, bank obligations (*e.g.,* certificates of deposit and bankers' acceptances), repurchase agreements, and various government obligations, such as U.S. Treasury bills. Money market instruments may be structured to be, or may employ a trust or other form so that they are, eligible investments for money market funds. For example, put features can be used to modify the maturity of a security or interest rate adjustment features can be used to enhance price stability. If a structure fails to function as intended, adverse tax or investment consequences may result. Neither the IRS nor any other regulatory authority has ruled definitively on certain legal issues presented by certain structured securities. Future tax or other regulatory determinations could adversely affect the value, liquidity, or tax treatment of the income received from these securities. Commercial paper is a money market instrument issued by banks or companies to raise money for short-term purposes. Unlike some other debt obligations, commercial paper is typically unsecured. Commercial paper may be issued as an asset-backed security.

During the market volatility caused by the COVID-19 pandemic, many money market instruments that were thought to be highly liquid became illiquid and lost value. The U.S. government and the U.S. Federal Reserve, as well as certain foreign governments and central banks, took extraordinary actions with respect to the financial markets generally and money market instruments in particular. While these actions have stabilized the markets for these instruments, there can be no assurances that those actions will continue or continue to be effective. If the Fund's money market instruments become illiquid, the Fund may be unable to satisfy certain of its obligations or may only be able to do so by selling other securities at prices or times that may be disadvantageous to do so.

**Mortgage-Backed Securities**. Mortgage-backed securities are securities that represent direct or indirect participation in, or are collateralized by and payable from, mortgage loans secured by real property or instruments derived from such loans. The payment of principal and interest and the price of a mortgage-backed security generally depend on the cash flows generated by the underlying mortgages and the terms of the mortgage-backed security. In addition, tax or other regulatory changes may adversely affect the mortgage-backed securities market as a whole. Mortgage-backed securities are backed by different types of mortgages, including commercial and residential properties and reverse mortgages. Investments in mortgage-backed securities are impacted by the industry, sector, and geographic region of the underlying mortgages. Mortgage-backed securities include various types of securities such as pass-throughs, stripped mortgage-backed securities, and collateralized mortgage obligations. There are a wide variety of mortgage types underlying these securities, including mortgage instruments whose principal or interest payments may vary or whose terms to maturity may be shorter than customary.

Mortgage-backed securities represent interests in pools of mortgage loans assembled for sale to investors by various governmental agencies, such as the Government National Mortgage Association (GNMA), by government-related organizations, such as the Federal National Mortgage Association (FNMA) and the Federal Home Loan Mortgage Corporation (FHLMC), and by private issuers, such as commercial banks, savings and loan institutions and mortgage companies. Government mortgage-backed securities are backed by the full faith and credit of the United States as to payment of principal and interest. GNMA, the principal U.S. guarantor of these securities, is a wholly-owned U.S. government corporation within the Department of Housing and Urban Development. Government-related mortgage-backed securities are not backed by the full faith and credit of the United States. Issuers of government-related mortgage-backed securities include FNMA and FHLMC. FNMA is a congressionally chartered corporation subject to general regulation by the Secretary of Housing and Urban Development.

Securities issued by FNMA are guaranteed as to timely payment of principal and interest by FNMA. FHLMC is a stockholder-owned government-sponsored enterprise established by Congress. Participation certificates representing interests in mortgages from FHLMC's national portfolio are guaranteed as to the timely payment of interest and principal by FHLMC.

Under the Federal Housing Finance Agency's "Single Security Initiative," FNMA and FHLMC have entered into a joint initiative to develop a common securitization platform for the issuance of Uniform Mortgage-Backed Securities ("UMBS"), which would generally align the characteristics of FNMA and FHLMC mortgage-backed securities. In June 2019, FNMA and FHLMC started to issue UMBS in place of their current offerings of TBA-eligible mortgage-backed securities. The effect of the issuance of UMBS on the market for mortgage-backed securities is uncertain.

Private, government, or government-related entities may create mortgage loan pools offering pass-through investments in addition to those described above. Interests in pools of mortgage-related securities differ from other forms of debt instruments, which normally provide for periodic payment of interest in fixed amounts with principal payments at maturity or specified call dates. Instead, these securities typically provide a monthly payment which consists of both interest and principal payments. In effect, these payments generally are a "pass-through" of the monthly payments made by the individual borrowers on their residential or commercial loans, net of any fees paid to the issuer or guarantor of such securities. Additional payments are caused by repayments of principal resulting from the sale of the underlying property, refinancing or foreclosure, net of fees or costs incurred.

Mortgage-backed securities are often subject to more rapid repayment than their stated maturity date would indicate as a result of the pass-through of prepayments of principal on the underlying loans. Prepayments of principal by mortgagors or mortgage foreclosures shorten the term of the mortgage pool underlying the mortgage-backed security. The occurrence of prepayments is a function of several factors, including interest rates, general economic conditions, the location of the mortgaged property, the age of the mortgage or the location and age of other underlying obligations, regulatory requirements, and other social and demographic conditions. Because prepayment rates of individual mortgage pools vary widely, the average life of a particular pool is difficult to predict. The rate of principal payments for a reverse mortgage-backed security depends on a variety of economic, geographic, social, and other factors, including interest rates and borrower mortality. Reverse mortgage-backed securities may respond differently to economic, geographic, social, and other factors than other mortgage-backed securities. A Fund's ability to maintain positions in mortgage-backed securities is affected by the reductions in the principal amount of such securities resulting from prepayments. The values of mortgage-backed securities vary with changes in market interest rates

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generally and the differentials in yields among various kinds of U.S. government securities, mortgage-backed securities, and securitized instruments. In periods of rising interest rates, the rate of prepayment tends to decrease, thereby lengthening the average life of a pool of mortgages supporting a mortgage-backed security. Conversely, in periods of falling interest rates, the rate of prepayment tends to increase thereby shortening the average life of such a pool. Because prepayments of principal generally occur when interest rates are declining, an investor generally has to reinvest the proceeds of such prepayments at lower interest rates than those at which its assets were previously invested. Therefore, mortgage-backed securities typically have less potential for capital appreciation in periods of falling interest rates than other income-bearing securities of comparable maturity. Ongoing developments in the residential and commercial mortgage markets may have additional consequences for the market for mortgage-backed securities. During periods of deteriorating economic conditions, such as recessions or periods of rising unemployment, delinquencies and losses generally increase, sometimes drastically, with respect to securitizations involving mortgage loans. Mortgage-backed securities are subject to the risk that underlying borrowers will be unable to meet their obligations and the value of property that secures the mortgage may decline in value and be insufficient, upon foreclosure, to repay the associated loan. There are fewer investors in mortgage- and asset-backed securities markets and those investors are more homogenous than in markets for other kinds of securities. If a number of market participants are impacted by negative economic conditions, forced selling of mortgage- or asset-backed securities unrelated to fundamental analysis could depress market prices and liquidity significantly and for a longer period of time than in markets with greater liquidity.

Collateralized mortgage obligations (CMOs) are mortgage-backed securities that are collateralized by residential or commercial loan mortgages or mortgage pass-through securities. The bonds issued in a CMO transaction are divided into groups, and each group of bonds is referred to as a "tranche." The CMO structure enables the issuer to direct the principal and interest cash flow generated by the collateral of the different tranches in a prescribed manner in order to meet different investment objectives. Under the traditional CMO structure, the cash flows generated by the mortgages or mortgage pass-through securities in the collateral pool are used to first pay interest and then pay principal to the CMO bondholders. The bonds issued under a traditional CMO structure are retired sequentially as opposed to the pro-rata return of principal found in traditional pass-through obligations. Subject to the various provisions of individual CMO issues, the cash flow generated by the underlying collateral (to the extent it exceeds the amount required to pay the stated interest) is used to retire the bonds. Under a CMO structure, the repayment of principal among the different tranches is prioritized in accordance with the terms of the particular CMO issuance. The "fastest-pay" tranches of bonds, as specified in the Prospectus for the issuance, would initially receive all principal payments. When those tranches of bonds are retired, the next tranche, or tranches, in the sequence, as specified in the Prospectus, receive all of the principal payments until they are retired. The sequential retirement of bond groups continues until the last tranche is retired. Accordingly, the CMO structure allows the issuer to use cash flows of long maturity, monthly-pay collateral to formulate securities with short, intermediate, and long final maturities, as well as varied expected average lives and risk characteristics. Other structures include floating rate CMOs, parallel pay CMOs, planned amortization classes, accrual bonds and CMO residuals. These structures affect the amount and timing of principal and interest received by each tranche from the underlying collateral. Under certain of these structures, given classes of CMOs have priority over others with respect to the receipt of prepayments on the mortgages. Therefore, depending on the type of CMOs in which a Fund invests, the investment may be subject to a greater or lesser risk of prepayment than other types of mortgage-backed securities.

A primary risk of CMOs is the uncertainty of the timing of cash flows that results from the rate of prepayments on the underlying mortgages serving as collateral and from the structure of the particular CMO transaction (that is, the priority of the individual tranches). An increase or decrease in prepayment rates (resulting from a decrease or increase in mortgage interest rates) will affect the yield, average life, and prices of CMOs. The prices of certain CMOs, depending on their structure and the rate of prepayments, can be volatile. Some CMOs may also not be as liquid as other securities. The value of CMOs collateralized by commercial mortgages or commercial mortgage pass-through securities depend on the cash flow and volatility of the commercial loans, the volatility and reliability of cash flows associated with the commercial properties; the type, quality, and competitiveness of the commercial properties; the experience, reputation and capital resources of the borrower and the manager; the location of the commercial properties; the quality of the tenants; and the terms of the loan agreements.

Stripped mortgage-backed securities (SMBSs) are derivative multi-class mortgage-backed securities. SMBSs may be issued by agencies or instrumentalities of the U.S. government, or by private originators of, or investors in, mortgage loans, including savings and loan associations, mortgage banks, commercial banks, investment banks, and special purpose entities formed or sponsored by any of the foregoing. SMBSs may be less liquid than other types of mortgage-backed securities.

SMBSs are usually structured with two classes that receive different proportions of the interest and principal distributions on a pool of mortgage assets. A common type of SMBS will have one class receiving some of the interest and most of the principal from the mortgage assets, while the other class will receive most of the interest and the remainder of the principal. In the most extreme case, one class will receive all of the interest (the interest-only or "IO" class), while the other class will receive all of the principal (the principal-only or "PO" class). The price and yield-to-maturity on an IO class is extremely sensitive to the rate of principal payments (including prepayments) on the related underlying mortgage assets, and a rapid rate of principal payments may have a material adverse effect on a Fund's yield to maturity from these securities. If the underlying mortgage assets experience greater than anticipated prepayments of principal, which is more likely to occur in a declining interest rate environment, a Fund may fail to recoup some or all of its initial investment in these securities, even if the security is in one of the highest rating categories. The mortgages underlying these securities may be alternative mortgage instruments, that is, mortgage instruments whose principal or interest payments may vary or whose terms to maturity may be shorter than customary.

**Mortgage "Dollar Roll" Transactions.** In mortgage "dollar roll" transactions, the investor sells mortgage-backed securities for delivery in the future and simultaneously contracts to repurchase substantially similar securities on a specified future date. During the roll period, the investor foregoes principal and interest paid on the mortgage-backed securities. The lost interest is compensated by the difference between the current sales price and the lower price for the future purchase (often referred to as the "drop") as well as by the interest earned on, and gains from, the investment of the cash proceeds of the initial sale. A commitment fee may also be received for participation in such transaction.

If the income and capital gains from the investment of the cash from the initial sale do not exceed the income, capital appreciation and gain or loss that would have been realized on the securities sold as part of the dollar roll, the use of this technique will result in a lower return than would have been realized without the use of the dollar rolls. Dollar roll transactions involve the risk that the market value of the securities that are required to be purchased in the future may decline below the agreed upon repurchase price of those securities. If the party to whom the

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securities are sold becomes insolvent, the right to purchase or repurchase securities may be restricted. Successful use of mortgage dollar rolls may depend upon the investor's ability to correctly predict interest rates and prepayments.

A dollar roll can be viewed as a borrowing. If a Fund makes additional investments while a dollar roll is outstanding, this may be considered a form of leverage.

**Municipal Instruments.** Debt obligations or other instruments or participations therein issued by or on behalf of (or that are otherwise treated for U.S. federal tax purposes as issued by or an obligation of) states, territories and possessions of the United States and the District of Columbia and their political subdivisions, agencies or instrumentalities, are known as "municipal instruments." Generally, interest received on municipal instruments is exempt from U.S. federal income tax. The tax-exempt nature of the interest on a municipal instrument is generally the subject of a bond counsel opinion delivered in connection with the issuance of the instrument. There is no assurance that the IRS will agree with bond counsel's opinion that such interest is tax-exempt or that the interest payments on such municipal instruments will continue to be tax exempt for the life of the municipal instrument. Issuers or other parties generally enter into covenants requiring continuing compliance with U.S. federal tax requirements to preserve the tax-free status of interest payments over the life of the municipal instrument. If at any time the covenants are not complied with, or if the IRS otherwise determines that the issuer did not comply with relevant tax requirements, interest payments from a municipal instrument could become subject to U.S. federal income tax, possibly retroactively to the date the municipal instrument was issued. As a result, an investor may need to amend prior year income tax returns. Certain types of structured securities are designed so that tax-exempt interest from municipal instruments held by the underlying entity will pass through to the holders of the structured security. There is no assurance that the IRS will agree that such interest is tax exempt.

From time to time, proposals have been introduced before Congress and state legislatures to restrict or eliminate the U.S. federal and state income tax exemption for interest on municipal instruments. Similar proposals may be introduced in the future. Such legislation or court or tax rulings that eliminate or cap the federal and/or state deduction of interest from municipal instruments could adversely affect the price of municipal instruments and the interest paid by the municipal instruments, and may restrict or eliminate the ability of the Fund to achieve its respective investment objective. Federal policies are always a risk to the states and may affect municipal instruments. Federal elections, including presidential elections, may raise additional uncertainty and election results may result in changes in taxation, regulatory shifts, and/or funding allocations that could impact a state's revenue streams, property values, and migration patterns.

The value of municipal instruments can be affected by changes in their actual or perceived credit quality. The credit quality and ability to pay principal and interest when due of municipal instruments can be affected by, among other things, the financial condition of the issuer or guarantor, the issuer's future borrowing plans and sources of revenue, the economic feasibility of the revenue bond project or general borrowing purpose, or political or economic developments in the region where the instrument is issued. Municipal instruments generally trade in the over-the-counter market. Information about the financial condition of an issuer of municipal bonds may not be as extensive or frequently available as that which is made available by corporations whose securities are publicly traded.

General obligation bonds are backed by the issuer's pledge of its full faith and credit and taxing power for the repayment of principal and the payment of interest. Issuers of general obligation bonds include states, territories, counties, cities, towns, and regional districts. The proceeds of these obligations are used to fund a wide range of public projects, including construction or improvement of schools, highways and roads, and water and sewer systems. The rate of taxes that can be levied for the payment of debt service on these bonds may be limited. Additionally, there may be limits as to the rate or amount of special assessments or taxes that can be levied to meet these obligations.

Some general obligation bonds are backed by both a pledge of a specific revenue source, such as a special assessment or tax and an issuer's pledge of its full faith and credit and taxing power. Debt service from these general obligation bonds is typically paid first from the specific revenue source and second, if the specific revenue source is insufficient, from the general taxing power.

Revenue bonds are generally backed by the specific revenues derived from a particular facility, group of facilities, or, in some cases, the proceeds of a special excise tax or other specific revenue source, such as a state's or local government's proportionate share of the payments from the Tobacco Master Settlement Agreement. Revenue bonds are issued to finance a wide variety of capital projects. Examples include electric, gas, water and sewer systems; highways, bridges, and tunnels; port and airport facilities; colleges and universities; and hospitals. Industrial development bonds, a type of revenue bond, are issued by or on behalf of public authorities to raise money to finance various privately operated facilities for a variety of purposes, including economic development, solid waste disposal, transportation, and pollution control. Although the principal security for revenue bonds is typically the revenues of the specific facility, project, company or system, many revenue bonds are secured by additional collateral in the form of a mortgage on the real estate comprising a specific facility, project or system, a lien on receivables and personal property, as well as the pledge of various reserve funds available to fund debt service, working capital, capital expenditures or other needs. Specific revenues and other security pledged may be insufficient to pay principal and interest due which will cause the price of the bonds to decline. In some cases, revenue bonds issued by an authority are backed by a revenue stream unrelated to the issuer, such as a hotel occupancy tax, a sales tax, or a special assessment. In these cases, the ability of the authority to pay debt service is solely dependent on the revenue stream generated by the special tax. Furthermore, the taxes supporting such issues may be subject to legal limitations as to rate or amount.

Municipal bond insurance policies typically insure, subject to the satisfaction of the policy conditions and certain other restrictions, timely and scheduled payment of all principal and interest due on the underlying municipal instruments. Municipal bond insurance does not insure against market fluctuations which affect the price of a security.

The insurance may be obtained by either (i) the issuer at the time the municipal instrument is issued, commonly referred to as primary market insurance, or (ii) another party after the municipal instrument has been issued, commonly referred to as secondary market insurance.

The value of a municipal bond insurance policy is dependent on the credit quality and financial strength of the company providing such insurance and its ability to fulfill its claims-paying obligations. As a result of ratings downgrades and withdrawals from the municipal bond insurance business, some municipal bond insurance policies may have little or no value.

Municipal bonds may be more susceptible to downgrades or defaults during economic downturns or similar periods of economic stress, which in turn could affect the market values and marketability of many or all municipal obligations of borrowers in a state, U.S. territory, or possession. Certain adverse events may significantly stress the financial resources of certain municipal issuers, in some cases weakening their ability to meet their financial obligations and harming the value of the Fund's investments. Factors contributing to the economic stress on municipal issuers may include a decrease in revenues supporting the bonds due to factors such as lower sales tax revenue as a result of

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decreased consumer spending, lower income tax revenue due to higher unemployment, and a decrease in the value of collateral backing the revenue bonds issued by hospitals, colleges and universities, toll roads, convention centers, stadiums, casinos, and others due to closures and/or curtailment of services and/or changes in consumer behavior. Since some municipal obligations may be secured or guaranteed by banks and other institutions, the risk to a Fund could increase if the banking or financial sector suffers an economic downturn and/or if the credit ratings of the institutions issuing the guarantee are downgraded or at risk of being downgraded by a national rating organization. If such events were to occur, the value of the security could decrease or the value could be lost entirely, and it may be difficult or impossible for a Fund to sell the security at the time and the price that normally prevails in the market.

In addition to being downgraded, if a municipality experiences significant financial distress, depending on applicable law, it may become subject to emergency oversight, and in some jurisdictions may be eligible to file a petition for relief under Chapter 9 of the U.S. Bankruptcy Code. As a result of these actions, a distressed municipality may be entitled to certain protections from the enforcement of rights and remedies by creditors in order to permit the municipality to negotiate and execute a plan for the reorganization of its debts. Such a reorganization of debts may include the extension of debt maturities, reduction in the amount of principal and interest due thereon, alterations to contractual provisions and other measures which may significantly affect the value of the securities issued by the municipality and the value of the Fund's investments therein.

*Education.* In general, there are two types of education-related bonds: (i) those issued to finance projects for public and private colleges and universities, charter schools and private schools, and (ii) those representing pooled interests in student loans. Bonds issued to supply educational institutions with funding or to fund construction and other projects which benefit the educational institution are subject to many risks, including the risks of unanticipated revenue decline, primarily the result of decreasing student enrollment, decreasing state and federal funding, or a change in general economic conditions. Additionally, higher than anticipated costs associated with salaries, utilities, insurance or other general expenses could impair the ability of a borrower to make annual debt service payments. Charter schools are subject to the additional risk that the contract (or charter) may be revoked for failure to meet academic or fiscal management standards, safety or health-related issues, or other reasons. Student loan revenue bonds are typically offered by state (or substate) entities and are primarily backed by pools of private student loans. Underlying student loans are generally unsecured loans made to parents or students which may be supported by reserves or other forms of credit enhancement. Cash flows supporting student loan revenue bonds are impacted by numerous factors, including the rate of student loan defaults, seasoning of the loan portfolio, unemployment rates, the trust's overall ability to generate excess spread, and loan modifications. Since bonds are issued prior to the origination of student loans, there is risk that bond proceeds are not fully disbursed to students, in which case the issuer has the option to retire bonds prior to the stated maturity or call date. Other risks associated with student loan revenue bonds include potential changes in federal legislation regarding student loan revenue bonds, bankruptcy protection for student loan borrowers, and continued federal interest and other program subsidies currently in effect.

*Electric Utilities.* The electric utilities industry is highly regulated at both the state and federal level. There are generally two types of electric utilities: municipal owned and investor owned. Municipal owned utilities typically benefit from a monopoly position and self-imposed rates, whereas investor owned utilities are typically subject to state and federal oversight for rates and/or subject to competition. Regardless of type, risks include: (a) the availability and cost of fuel, (b) the availability and cost of capital, (c) the effects on demand from economic conditions, (d) the effects of conservation on energy demand, (e) the effects of rapidly changing environmental, safety, and licensing requirements, and other federal, state, and local regulations, (f) timely and sufficient rate increases allowing for reasonable cost recovery including growing retiree obligations and changing fuel prices, (g) maintenance of existing assets and (h) timely and efficient construction of new assets including those to meet renewable energy mandates.

*Health Care.* The health care industry includes providers such as hospitals, nursing homes, retirement communities, and community health organizations. It is subject to regulatory action by a number of governmental agencies at the federal, state, and local level. A major source of revenues for the health care industry is payments from the Medicare and Medicaid programs. As a result, the industry is sensitive to legislative changes and reductions in governmental spending for such programs. A second major source of revenues for the health care industry is payments from private insurance companies and health maintenance organizations. As such, any changes to and reductions in reimbursement rates from these entities for services provided could be detrimental to the revenues of the providers. Numerous other factors may affect the industry, such as general and local economic conditions; the real estate market; demand for services; expenses (including for example, labor, malpractice insurance premiums and pharmaceutical products); and competition among health care providers. In the future, the following factors may adversely affect health care facility operations: national health reform legislation or proposed legislation; other state or local health care reform measures; medical and technological advances which dramatically alter the need for health services or the way in which such services are delivered; changes in medical coverage which alter the traditional fee-for-service revenue stream; and efforts by employers, insurers, and governmental agencies to reduce the costs of health insurance and health care services.

*Housing.* Housing revenue bonds typically are issued by a state, county, or local housing authority and are secured by mortgage loan repayments. The proceeds of these bonds may be used to make mortgage loans for single-family housing, multi-family housing, or a combination of the two. Due to the difficulty in precisely predicting demand for mortgages, there is a risk that the bond proceeds will be in excess of demand, which could result in early retirement of the bonds by the issuer. Moreover, such housing revenue bonds depend for their repayment upon the cash flow from the underlying mortgages, which cannot be precisely predicted when the bonds are issued, and is negatively impacted by an increase of the rate of mortgage defaults. Any difference in the actual cash flow from such mortgages from the assumed cash flow could have an adverse impact upon the ability of the issuer to make scheduled payments of principal and interest on the bonds, or could result in early retirement of the bonds. Additionally, the scheduled payments of principal and interest depend in part upon reserve funds established from the proceeds of the bonds, assuming certain rates of return on investment of such reserve funds. The financing of housing projects is affected by a variety of factors, including general economic conditions, interest rates, and real estate prices, which may impact the borrower's ability to pay debt service and may impair the value of the collateral securing the bonds, if any. Some authorities provide additional security for the bonds in the form of insurance, subsidies (federal, state, or local), additional collateral, or state pledges (without obligation) to make up deficiencies. With respect to multi-family housing, additional risk factors include satisfactory completion of construction within cost constraints, the achievement and maintenance of a sufficient level of occupancy, sound management of the developments, timely and adequate increases in rents to cover increases in operating expenses, including taxes, utility rates and maintenance costs, changes in applicable laws and governmental regulations and social and economic trends. With respect to single family housing, additional risk factors include the additional credit risk of first-time homebuyers with lower incomes and mortgages with little or no equity.

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*Prepaid Gas Bonds.* Payment of principal and interest on prepaid gas bonds is subject to the key risk that the gas supplier fails to provide the natural gas as agreed over the life of the contract between the gas supplier and the municipal utility. The gas supplier's obligation to provide the natural gas is guaranteed by a financial institution and therefore the credit quality of this financial institution is an important factor in the credit quality and value of the bonds. Additional risks include the willingness and ability of the municipal utilities to purchase the gas when delivered. Failure to do so, among other things, could result in the bond being called.

*Tender Option Bonds.* The Fund may invest in certificates issued in tender option bond (TOB) transactions. A TOB is a common way of referring to floating rate certificates issued by a special purpose trust into which one or more municipal instruments are deposited. In a TOB transaction, the trust issues two classes of securities. The first class, the floating rate certificates (floaters), is typically sold to third-party investors and pays an interest rate that is reset periodically based on a specified index. The second class, the inverse floating rate certificates (inverse floaters), is typically issued to the investor(s) that deposited the municipal instruments into the trust, and pays an interest rate based on the difference between the interest rate earned on the underlying municipal instruments and the interest rate paid on the floaters, after expenses.

Holders of the floaters generally have the right to tender such securities back to the TOB trust for par plus accrued interest. A remarketing agent for the trust is required to attempt to re-sell any tendered floaters to new investors for the purchase price (the stated amount of the floaters plus accrued interest). If the remarketing agent is unable to successfully re-sell the tendered floaters, depending on the structure of the trust, a liquidity provider to the trust may elect to cause the trust to sell the municipal instruments held by the trust in an amount sufficient to purchase any tendered floaters or may provide a loan to the trust, the proceeds of which will be used to purchase the tendered floaters.

Holders of the inverse floaters typically have the right to partially or totally collapse their interest in the TOB trust by causing the holders of a proportional share of the floaters to tender their notes to the TOB trust at par plus accrued interest. Thereafter, holders of the inverse floaters may withdraw a corresponding share of the municipal instruments from the TOB trust.

Because holders of the floaters have the right to tender their securities to the TOB trust at par plus accrued interest, holders of the inverse floaters are exposed to all of the gains or losses on the underlying municipal bonds, despite the fact that their net cash investment is significantly less than the value of those bonds. This multiplies the positive or negative impact of the underlying bonds' price movements on the value of the inverse floaters, thereby creating effective leverage.

Due to the leveraged nature of these investments, the value of an inverse floater will increase and decrease to a greater extent than the value of the TOB trust's underlying municipal bonds in response to changes in market interest rates or credit quality. An investment in inverse floaters typically will involve greater risk than an investment in a fixed rate municipal bond.

Inverse floaters have variable interest rates that typically move in the opposite direction from movements in prevailing interest rates, most often short-term rates. Accordingly, the value of inverse floaters, or other obligations or certificates structured to have similar features, generally moves in the opposite direction from interest rates. The value of an inverse floater can be more volatile than the value of other debt instruments of comparable maturity and quality; during periods of rising interest rates, the prices of inverse floaters will tend to decline more quickly than those of fixed rate instruments. Inverse floaters incorporate varying degrees of leverage. Generally, greater leverage results in greater price volatility for any given change in interest rates.

A TOB transaction typically provides for the automatic termination of the trust upon the occurrence of certain adverse events. These events may include, among others, a credit rating downgrade or decrease in the value of the underlying municipal instruments below a specified level, a bankruptcy of the liquidity provider or the inability of the remarketing agent to re-sell to new investors floaters that have been tendered for repurchase. Following such an event, the underlying municipal instruments are generally sold for current market value and the proceeds generally distributed first to holders of the floaters in an amount equal to the purchase price of their securities plus accrued interest and then to the holders of the inverse floaters. The sale of the underlying municipal instruments following such an event could be at an adverse price that might result in the loss by the Fund of a substantial portion, or even all, of its investment in the related inverse floater.

Other accounts that are advised or sub-advised by MFS or its affiliates may make concurrent side-by-side investments in the same TOB trust, with each account participating in the TOB trust independently of the other participating accounts. In such a scenario, each account will generally bear the benefits and burdens of its proportional investment in the trust.

Both Section 619 (the "Volcker Rule") and Section 941 (the "Risk Retention Rules") of the Dodd-Frank Wall Street Reform and Consumer Protection Act apply to tender option bond programs. As a result of the Volcker Rule and the Risk Retention Rules, one or more investors in each TOB trust's inverse floaters must serve as the "sponsor" of the trust and undertake certain responsibilities. To the extent the Fund serves as such a sponsor, although the Fund may use a third-party service provider to complete some of these additional responsibilities, being the sponsor of the trust may give rise to certain additional risks including compliance, securities law and operational risks.

Inverse floaters may be subject to legal or contractual restrictions on resale and therefore may be less liquid than other types of securities. In addition, inverse floaters are subject to the risk that the structure does not work as intended and are subject to the credit risk of any third party service provider and to the third party service provider's ability or willingness to perform in accordance with the terms of the arrangement.

*Transportation.* Transportation debt may be issued to finance the construction of airports, toll roads, highways, or other transit facilities. Airport bonds are dependent on the economic conditions of the airport's service area and may be affected by the business strategies and fortunes of specific airlines. They may also be subject to competition from other airports and modes of transportation. Air traffic generally follows broader economic trends and may be affected by the price and availability of fuel as well as perceived global safety risks. Toll road bonds are also affected by the cost and availability of fuel as well as toll levels, the presence of competing roads and the general economic health of an area, including the shift towards telework. Fuel costs, transportation taxes and fees, and availability of fuel also affect other transportation-related securities, as do the presence of alternate forms of transportation, such as public transportation.

*Tobacco Settlement Revenue Bonds.* Tobacco settlement revenue bonds are secured by a single source of revenue --a state or jurisdiction's proportionate share of periodic payments made by tobacco companies under the Master Settlement Agreement (the "MSA") entered into by participating cigarette manufacturers, 46 states, and other jurisdictions in November of 1998 in settlement of certain smoking-related litigation. Annual payments on the bonds are dependent on the receipt by the issuer of future settlement payments under the MSA. These annual payments are subject to numerous adjustments. The actual amount of future settlement payments depends on annual domestic cigarette shipments, inflation, market share gains by non-participating cigarette manufacturers, the resolution of disputes between the states and participating tobacco companies regarding diligent enforcement of statutes requiring escrow payments from non-participating

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manufacturers and other factors. MSA payment adjustments may cause bonds to be repaid faster or slower than originally projected. Tobacco bonds are subject to additional risks, including the risk that a tobacco company defaults on its obligation to make payments to the state or that the MSA or state legislation enacted pursuant to the MSA is void or unenforceable. Cigarette shipments (and therefore MSA payments) will be negatively affected by increased government regulation (such as a ban on menthol cigarettes), price increases above the rate of inflation (including tax increases by U.S. federal, state, and local authorities), increased health consciousness by smokers, increases in indoor and outdoor smoking restrictions, and increases in sales of other nicotine delivery devices (such as electronic cigarettes, smoking cessation products and smokeless tobacco).

*Water and Sewer.* Water and sewer revenue bonds are generally secured by the fees charged to each user of the service. The issuers of water and sewer revenue bonds generally enjoy a monopoly status and latitude in their ability to raise rates. However, lack of water supply due to insufficient rain, run-off, or snowpack can be a concern and has led to past defaults. Further, public resistance to rate increases, declining numbers of customers in a particular locale, costly environmental litigation, and Federal environmental mandates and the associated costs are challenges faced by issuers of water and sewer bonds. Also, water and sewer bonds issued by an enterprise of a municipality in financial distress may not be insulated from the financial insecurity of that municipality.

**Municipal Lease Obligations.** Municipal lease obligations and participations in municipal leases are undivided interests in a portion of an obligation in the form of a lease or installment purchase or conditional sales contract which is issued by a state, local government, or a municipal financing corporation to acquire land, equipment, and/or facilities (collectively hereinafter referred to as "lease obligations"). Generally, lease obligations do not constitute general obligations of the municipality for which the municipality's taxing power is pledged. Instead, a lease obligation is ordinarily backed by the municipality's covenant to budget for, appropriate, and make the payments due under the lease obligation. As a result of this structure, municipal lease obligations are generally not subject to constitutional debt limitations or other statutory requirements that may apply to other municipal securities.

Lease obligations may contain "non-appropriation" clauses which provide that the municipality has no obligation to make lease or installment purchase payments in future years unless money is appropriated for that purpose on a yearly basis. If the municipality does not appropriate in its budget enough to cover the payments on the lease obligation, the lessor may have the right to repossess and relet the property to another party. Depending on the property subject to the lease, the value of the property may not be sufficient to cover the debt.

In addition to the risk of "non-appropriation," municipal lease securities may not have as liquid a market as conventional municipal bonds. Furthermore, municipal lease obligations generally have the same risk characteristics as Municipal Instruments.

**Options**. An option is a contract which conveys to the holder of the option the right, but not the obligation, to purchase (in the case of a call option) or sell (in the case of a put option) a specific amount or value of a particular underlying interest at a specific price (called the "exercise" or "strike" price) at one or more specific times or during a specified period before the option expires. The underlying interest of an option contract can be a security, currency, index, future, swap, commodity, or other type of financial instrument or asset. The seller of an option is called an option writer. The purchase price of an option is called the premium. The potential loss to an option purchaser is limited to the amount of the premium plus transaction costs. This will be the case, for example, if the option is held and not exercised prior to its expiration.

Options can be traded either through established exchanges ("exchange traded options") or privately negotiated transactions (over-the-counter or "OTC options"). Exchange-traded options are standardized with respect to, among other things, the underlying interest, expiration date, contract size and strike price. The terms of OTC options are generally negotiated by the parties to the option contract which allows the parties greater flexibility in customizing the agreement, but OTC options are generally less liquid than exchange traded options.

All option contracts involve credit risk if the counterparty to the option contract (e.g., the clearing house or OTC counterparty) or the third party effecting the transaction in the case of cleared options (e.g., futures commission merchant or broker/dealer) fails to perform in accordance with the terms of the contract. The credit risk in OTC options that are not cleared is dependent on the credit worthiness of the individual counterparty to the contract and may be greater than the credit risk associated with cleared options.

The purchaser of a put option obtains the right (but not the obligation) to sell a specific amount or value of a particular interest to the option writer at a fixed strike price. In return for this right, the purchaser pays the option premium. The purchaser of a typical put option can expect to realize a gain if the price of the underlying interest falls. However, if the underlying interest's price does not fall enough to offset the cost of purchasing the option, the purchaser of a put option can expect to suffer a loss (limited to the amount of the premium, plus related transaction costs).

The purchaser of a call option obtains the right (but not the obligation) to purchase a specified amount or value of a particular interest from the option writer at a fixed strike price. In return for this right, the purchaser pays the option premium. The purchaser of a typical call option can expect to realize a gain if the price of the underlying interest rises. However, if the underlying interest's price does not rise enough to offset the cost of purchasing the option, the buyer of a call option can expect to suffer a loss (limited to the amount of the premium, plus related transaction costs).

The purchaser of a call or put option may terminate its position by allowing the option to expire, exercising the option or closing out its position by entering into an offsetting option transaction if a liquid market is available. If the option is allowed to expire, the purchaser will lose the entire premium. If the option is exercised, the purchaser would complete the purchase or sale, as applicable, of the underlying interest to the option writer at the strike price.

The writer of a put or call option takes the opposite side of the transaction from the option's purchaser. In return for receipt of the premium, the writer assumes the obligation to buy or sell (depending on whether the option is a put or a call) a specified amount or value of a particular interest at the strike price if the purchaser of the option chooses to exercise it.

Generally, an option writer sells options with the goal of obtaining the premium paid by the option purchaser. If an option sold by an option writer expires without being exercised, the writer retains the full amount of the premium. The option writer's potential loss is equal to the amount the option is "in-the-money" when the option is exercised offset by the premium received when the option was written. A call option is in-the-money if the value of the underlying interest exceeds the strike price of the option, and so the call option writer's loss is theoretically unlimited. A put option is in-the-money if the strike price of the option exceeds the value of the underlying interest. Generally, any profit realized by an option purchaser represents a loss for the option writer. The writer of an option may seek to terminate a position in the option before exercise by closing out its position by entering into an offsetting option transaction if a liquid market is available. If the market is not

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liquid for an offsetting option, however, the writer must continue to be prepared to sell or purchase the underlying asset at the strike price while the option is outstanding, regardless of price changes.

The writer of a cleared option is required to deposit initial margin. Additional margin may also be required. The writer of an uncleared option may be required to deposit initial margin and additional margin.

A physical delivery option gives its owner the right to receive physical delivery (if it is a call), or to make physical delivery (if it is a put) of the underlying interest when the option is exercised. A cash-settled option gives its owner the right to receive a cash payment based on the difference between a determined value of the underlying interest at the time the option is exercised and the fixed exercise price of the option. In the case of physically settled options, it may not be possible to terminate the position at any particular time or at an acceptable price. A cash-settled call conveys the right to receive a cash payment if the determined value of the underlying interest at exercise exceeds the exercise price of the option, and a cash-settled put conveys the right to receive a cash payment if the determined value of the underlying interest at exercise is less than the exercise price of the option.

Combination option positions are positions in more than one option at the same time. A spread involves being both the buyer and writer of the same type of option on the same underlying interest but different exercise prices and/or expiration dates. A straddle consists of purchasing or writing both a put and a call on the same underlying interest with the same exercise price and expiration date.

The principal factors affecting the market value of a put or call option include supply and demand, interest rates, the current market price of the underlying interest in relation to the exercise price of the option, the volatility of the underlying interest and the remaining period to the expiration date.

If a trading market in particular options were illiquid, investors in those options would be unable to close out their positions until trading resumes, and option writers may be faced with substantial losses if the value of the underlying interest moves adversely during that time. However, there can be no assurance that a liquid market will exist for any particular options product at any specific time. Lack of investor interest, changes in volatility, or other factors or conditions might adversely affect the liquidity, efficiency, continuity, or even the orderliness of the market for particular options. Exchanges or other facilities on which options are traded may establish limitations on options trading, may order the liquidation of positions in excess of these limitations, or may impose other sanctions that could adversely affect parties to an options transaction.

Many options, in particular OTC options, are complex and often valued based on subjective factors. Improper valuations can result in, among other consequences, increased cash payment requirements to counterparties or a loss of value to a Fund.

**Preferred Stock**. Preferred stock represents an equity or ownership interest in an issuer and is therefore subject to the same risks as other equity securities. Preferred stock has precedence over common stock in the event the issuer is liquidated or declares bankruptcy, but is junior to the interests of the debt instruments of the issuer. Preferred stock, unlike common stock, often has a stated dividend rate payable from the corporation's earnings. Preferred stock dividends may be cumulative or non-cumulative, participating, or auction rate. "Cumulative" dividend provisions require all or a portion of prior unpaid dividends to be paid before dividends can be paid to the issuer's common stock. "Participating" preferred stock may be entitled to a dividend exceeding the stated dividend in certain cases. The level of "auction rate" dividends are reset periodically through an auction process. If interest rates rise, the fixed dividend on preferred stocks may be less attractive, causing the prices of such stocks to decline. Preferred stock may have mandatory sinking fund provisions, as well as provisions allowing the stock to be called or redeemed, which can limit the benefit of a decline in interest rates. The value of preferred stock is sensitive to changes in interest rates and to changes in the issuer's credit quality.

**Real Estate-Related Investments**. Investment in real estate-related investments or derivatives whose value is based on real estate related indicators are subject to similar risks to those associated with the direct ownership of real estate and with the real estate industry in general. Real estate-related investments are affected by general, regional, and local economic conditions; difficulties in valuing and disposing of real estate; fluctuations in interest rates; property tax rates, zoning laws, environmental regulations, and other governmental action; cash flow dependency; increased operating expenses; lack of availability of mortgage funds; losses due to natural disasters; overbuilding; losses due to casualty or condemnation; changes in property values and rental rates; the management skill and creditworthiness of the REITs manager; and other factors. Changes in interest rates may also affect the value of the Fund's investment in real estate-related investments. For instance, when interest rates rise, the real estate market typically experiences decreased demand and the prices of real-estate related investments generally decrease. Alternatively, during periods of declining interest rates, certain mortgage REITs may hold mortgages that the mortgagors elect to prepay, and prepayment may diminish the yield on securities issued by those REITs. Investments in real estate-related investments may be negatively affected by pandemics, like the COVID-19 pandemic. Potential impacts of a pandemic on the real estate sector include lower occupancy rates, decreased lease payments, defaults, and foreclosures, among other consequences. The U.S. residential and commercial real estate markets may experience widespread declines in value, with certain regions experiencing significant losses in property values. Exposure to such real estate may adversely affect a real estate-related investment's performance, and therefore a Fund's performance.

REITs are pooled investment vehicles that invest primarily in income producing real estate or real estate related loans or interests. The affairs of REITs are managed by the REIT's sponsor and, as such, the performance of the REIT is dependent on the management skills of the REIT's sponsor. REITs are not diversified, and are subject to the risks of financing projects.

REITs are generally classified as equity REITs, mortgage REITs, or a combination of equity and mortgage REITs. Equity REITs invest most of their assets directly in real property and derive income primarily from the collection of rents. Equity REITs can also realize capital gains by selling properties that have appreciated in value. Mortgage REITs invest most of their assets in real estate mortgages and derive income from interest payments. An investor will indirectly bear its proportionate share of any expenses (such as operating expenses and advisory fees) paid by REITs in which it invests in addition to the expenses paid by the investor.

Equity REITs and similar entities formed under the laws of non-U.S. countries may be affected by changes in the value of the underlying property owned by the trusts. Mortgage REITs and similar entities formed under the laws of non-U.S. countries may be affected by default or payment problems relating to underlying mortgages, the quality of credit extended, interest rates and prepayments of the underlying mortgages. Equity and mortgage REITs are also subject to heavy cash flow dependency, borrower default, and self-liquidation.

Mortgage REITs are also subject to different combinations of prepayment, extension, interest rate and other market risks. The real estate mortgages underlying mortgage REITs are generally subject to a faster rate of principal repayments in a declining interest rate environment and to a slower rate of principal repayments in an increasing interest rate environment.

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Hybrid REITs share the characteristics and risks of equity REITs and mortgage REITs.

REITs could be adversely affected by failure to qualify for the favorable tax treatment available to REITs under the Code or to maintain their exemption from registration under the 1940 Act and similar risks may also apply to securities of entities similar to REITs formed under the laws of non-U.S. countries. In addition, REITs may be adversely affected by changes in U.S. federal tax law, for example, by limiting their permissible businesses or investments.

**Regulatory Risk.** Financial entities, such as investment companies and investment advisers, are generally subject to extensive government regulation. In addition, investments in certain industries, sectors, or countries may also be subject to extensive regulation. Government regulation may change frequently and may have significant adverse consequences. Economic downturns and political changes can trigger economic, legal, budgetary, tax, and other regulatory changes. Regulatory changes may change the way a Fund is regulated or the way the Fund's investments are regulated, affect the expenses incurred directly by the Fund and the value of its investments, and limit and/or preclude a Fund's ability to pursue its investment strategy or achieve its investment objective.

**Repurchase Agreements.** A repurchase agreement is an agreement under which a buyer would acquire a security for a relatively short period of time (usually not more than a week) subject to the obligation of the seller to repurchase and the buyer to resell such security at a fixed time and price (representing the buyer's cost plus interest). The buyer bears the risk of loss in the event that the other party to a repurchase agreement defaults on its obligations and the buyer is delayed or prevented from exercising its rights to dispose of the collateral. This risk includes the risk of procedural costs or delays in addition to a loss on the securities if their value should fall below their repurchase price. If Fund assets and/or collateral is maintained by a third party custodian, the Fund is also subject to the credit risk of the third party custodian. The Fund may engage in repurchase agreement transactions that are novated to the Fixed Income Clearing Corporation or to another clearinghouse. In such a case, the clearinghouse acts as the common counterparty to all repurchase transactions entered into under its repurchase agreement clearing program and guarantees that participants will receive their cash or securities collateral (as applicable) back at the close of the repurchase transaction. While this guarantee is intended to mitigate the counterparty risk and credit risk that exist in the case of a bilateral repurchase agreement transaction, the Fund is exposed to the risk of delays or losses in the event of a bankruptcy, other default, or non-performance by the clearinghouse or the clearinghouse sponsoring member through which the Fund transacts.

The SEC has finalized rules that will require certain transactions involving U.S. Treasuries, including repurchase agreements, to be centrally cleared. Compliance with these rules is on a rolling basis through the end of June 2027. Although the impact of these rules on the Fund is difficult to predict, they may reduce the availability or increase the costs of such transactions and may adversely affect the Fund's performance.

**Restricted Securities.** Restricted securities are securities that are subject to legal restrictions on their resale. Difficulty in selling securities may result in a loss or be costly to an investor. Restricted securities generally can be sold in privately negotiated transactions, pursuant to an exemption from registration under the Securities Act of 1933, or in a registered public offering. Where registration is required, the holder of a registered security may be obligated to pay all or part of the registration expense and a considerable period may elapse between the time it decides to seek registration and the time it may be permitted to sell a security under an effective registration statement. If, during such a period, adverse market conditions were to develop, the holder might obtain a less favorable price than when it decided to seek registration of the security.

**Reverse Repurchase Agreements.** In a reverse repurchase agreement, an investor sells securities and receives cash proceeds, subject to its agreement to repurchase the securities at a later date for a fixed price reflecting a market rate of interest. There is a risk that the counterparty to a reverse repurchase agreement will be unable or unwilling to complete the transaction as scheduled, which may result in losses to the investor. Unless the appreciation and income on assets purchased with proceeds from reverse repurchase agreements exceed the costs associated with them, the investor's performance is lower than it otherwise would have been. A reverse repurchase agreement can be viewed as a borrowing. If a Fund makes additional investments with the proceeds while a reverse repurchase agreement is outstanding, this may be considered a form of leverage.

The SEC has finalized rules that will require certain transactions involving U.S. Treasuries, including reverse repurchase agreements, to be centrally cleared. Compliance with these rules is on a rolling basis through the end of June 2027. Although the impact of these rules on the Fund is difficult to predict, they may reduce the availability or increase the costs of such transactions and may adversely affect the Fund's performance.

**Securities of Other Investment Companies**. Securities of other investment companies, including shares of closed-end investment companies, unit investment trusts, exchange-traded funds, business development companies, and open-end investment companies, represent interests in professionally managed portfolios that may invest in any type of instrument. Investing in other investment companies involves substantially the same risks as investing directly in the underlying instruments, but involve additional expenses at the investment company-level, such as a proportionate share of portfolio management fees and operating expenses. A Fund may invest in other funds advised by MFS. Certain types of investment companies, such as closed-end investment companies and exchange-traded funds, trade on a stock exchange or over-the-counter at a premium or a discount to their net asset value (NAV) per share. Unregistered investment companies are subject to less regulation. The extent to which a Fund can invest in securities of other investment companies is limited by the 1940 Act.

*Exchange Traded Funds (ETFs).* The Fund may invest in ETFs. An ETF may seek to replicate the performance of a specific index or may be actively managed. A Fund's purchase of ETFs results in the layering of expenses, such that the Fund would indirectly bear a proportionate share of an ETF's operating expenses. Further, while traditional open-end investment companies are continuously offered at NAV, ETFs are traded in the secondary market (e.g., on a stock exchange) on an intra-day basis at prices that may be above or below the value of their underlying portfolios. Investments in ETFs are subject to the risks associated with the underlying securities that the ETF holds. For example, the general level of stock prices may decline, thereby adversely affecting the value of the underlying investments of the ETF and, consequently, the value of the ETF. Investments in ETFs are also subject to the risk that the ETFs may not be liquid.

**Securitized Instruments**. Securitized instruments are debt instruments that generally provide payments of principal and interest based on the terms of the instrument and cash flows generated by the underlying assets. Underlying assets include residential and commercial mortgages, debt instruments, bank loans, motor vehicle installment sales contracts, installment loan contracts, leases of various types of real and personal property, receivables from revolving credit (e.g., credit cards) agreements and other receivables. The assets can be a pool of assets or a single asset (e.g., a loan to a specific corporation). Securitized instruments that represent an interest in a pool of assets provide

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greater credit diversification than securitized instruments that represent an interest in a single asset. Securitized instruments are issued by trusts or other special purpose entities that holds the underlying assets. Payment of interest and repayment of principal on securitized instruments may be largely dependent upon the cash flows generated by the underlying assets and, in certain cases, may be supported by letters of credit, surety bonds, or other credit enhancements.

The credit quality of securitized instruments depends primarily on the quality of the underlying assets, the rights of recourse available against the underlying assets and/or the issuer, the level of credit enhancement, if any, provided for the securities, and the credit quality of the credit-enhancement provider, if any. The value of securitized instruments may be affected by the various factors described above and other factors, such as changes in interest rates, the availability of information concerning the pool of assets and its structure, the creditworthiness of the servicing agent for the pool of assets, the originator of the underlying assets, or the entities providing the credit enhancement. Securitized instruments that do not have the benefit of a security interest in the underlying assets present certain additional risks that are not present with securitized instruments that do have a security interest in the underlying assets.

Some types of securitized instruments are often subject to more rapid repayment than their stated maturity date would indicate, as a result of the pass-through of prepayments of principal on the underlying assets. The rate of principal payments on these securitized instruments is related to the rate of principal payments on the underlying pool of assets and related to the priority of payment of the security with respect to the pool of assets. The occurrence of prepayments is a function of several factors, including interest rates, general economic conditions, the location and age of the underlying obligations, asset default and recovery rates, regulatory requirements, and other social and demographic conditions. Because prepayments of principal generally occur when interest rates are declining, an investor generally has to reinvest the proceeds of such prepayments at lower interest rates than those at which its assets were previously invested. Therefore, these securitized instruments may have less potential for capital appreciation in periods of falling interest rates than other income-bearing securities of comparable maturity. In periods of rising interest rates, the rate of prepayment tends to decrease, thereby lengthening the maturity of the asset-backed security, increasing the potential for loss.

**Short Sales**. A seller may make short sales that are made "against the box" and also those that are not made "against the box." A short sale that is not made "against the box" is a transaction in which a party sells a security it does not own, in anticipation of a decline in the market value of that security. To complete such a transaction, the seller must borrow the security to make delivery to the buyer. The seller then is obligated to replace the security borrowed by purchasing it at the market price at the time of replacement. It may not be possible to liquidate or close out the short sale at any particular time or at an acceptable price. In addition, a seller may need to sell other investments to meet its short sale obligations at a time when it would not otherwise do so. The price at such time may be more or less than the price at which the security was sold by the seller. Short sales may create leverage, and, to the extent that the seller invests the proceeds from the short sale in other securities, the seller is subject to the risks of the securities purchased with the proceeds in addition to the risks of the securities sold short. Until the security is replaced, the seller is required to repay to the lender of securities any dividends or interest which accrue during the period of the loan. To borrow the security, the seller also may be required to pay a premium, which would increase the cost of the short sale. The seller also will incur transaction costs in effecting short sales.

The seller will incur a loss as a result of the short sale if the price of the security or index increases between the date of the short sale and the date on which the seller replaces the borrowed security. Such loss may be unlimited. The seller will realize a gain if the price of the security declines between those dates. The amount of any gain will be decreased, and the amount of any loss increased, by the amount of the premium, dividends or interest the seller may be required to pay in connection with a short sale, and transaction costs. The overall benefit to the seller will depend on how the short sale performs relative to the market price of the securities purchased with the proceeds from the short sale.

A seller may also make short sales "against the box," (i.e., when a security identical to one owned by the seller is borrowed and sold short). If the seller enters into a short sale against the box, it is required to hold securities equivalent in-kind and amount to the securities sold short (or securities convertible or exchangeable into such securities) while the short sale is outstanding. The seller will incur transaction costs, including interest, in connection with opening, maintaining, and closing short sales against the box and will forgo an opportunity for capital appreciation in the security.

Existing regulatory bans and restrictions as well as any additional bans or restrictions regarding short sales and/or short positions that the SEC or regulatory authorities in other jurisdictions may adopt in the future may make it impossible for the Fund to execute certain investment strategies and may have a material adverse effect on the Fund's performance. The SEC has adopted rules requiring investment managers to file monthly confidential reports with the SEC regarding equity short sales and related activity. Under the rules, the SEC will publicly disclose aggregated short position information on a monthly basis. Compliance with the rules is expected to be in early 2026 unless the compliance date is delayed. In addition, other non-U.S. jurisdictions (such as the European Union and the United Kingdom) where the Fund may trade have reporting requirements.

**Sovereign Debt Obligations**. Sovereign debt obligations are issued or guaranteed by governments or their agencies of developed and emerging market countries. Sovereign debt may be in the form of conventional securities or other types of debt instruments such as loans or loan participations. Sovereign debt of emerging countries may involve a high degree of risk, and may be in default or present the risk of default. Governmental entities responsible for repayment of the debt may be unable or unwilling to repay principal and pay interest when due, and may require renegotiation or rescheduling of debt payments. Any restructuring of sovereign debt obligations will likely have a significant adverse effect on the value of the obligations. There is little legal recourse against sovereign issuers other than what such an issuer may determine to provide. In addition, prospects for repayment of principal and payment of interest may depend on political as well as economic factors, including the issuer's cash flow, the size of its reserves, its access to foreign exchange, and the relative size of its debt service burden to its economy as a whole. Although some sovereign debt is collateralized by U.S. Government securities, repayment of principal and payment of interest is not guaranteed by the U.S. Government.

**Special Purpose Acquisition Companies.** The Fund may invest in stock, warrants, and other securities of special purpose acquisition companies (SPACs) or similar special purpose entities that pool funds to seek potential acquisition or merger opportunities. A SPAC is typically a publicly traded company that raises funds through an initial public offering (IPO) for the purpose of acquiring or merging with an unaffiliated company to be identified subsequent to the SPAC's IPO. SPACs are often used as a vehicle to transition a company from private to publicly traded. The securities of a SPAC are often issued in "units" that include one share of common stock and one right or warrant (or partial right or warrant) conveying the right to purchase additional shares or partial shares. Unless and until a transaction is completed, a

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SPAC generally invests its assets (less a portion retained to cover expenses) in U.S. Government securities, money market fund securities and cash. To the extent the SPAC is invested in cash or similar securities, this may impact a Fund's ability to meet its investment objective. If an acquisition or merger that meets the requirements for the SPAC is not completed within a pre-established period of time, the invested funds are returned to the SPAC's shareholders, less certain permitted expenses, and any rights or warrants issued by the SPAC will expire worthless. Because SPACs and similar entities have no operating history or ongoing business other than seeking acquisitions, the value of their securities is particularly dependent on the ability of the entity's management to identify and complete a suitable transaction. Some SPACs may pursue acquisitions or mergers only within certain industries or regions, which may further increase the volatility of their securities' prices. In addition to purchasing publicly traded SPAC securities, a Fund may invest in SPACs through additional financings via securities offerings that are exempt from registration under the federal securities laws (restricted securities). No public market will exist for these restricted securities unless and until they are registered for resale with the SEC, and such securities may be considered illiquid and/or be subject to restrictions on resale. It may also be difficult to value restricted securities issued by SPACs.

An investment in a SPAC is subject to a variety of risks, including that: a significant portion of the funds raised by the SPAC for the purpose of identifying and effecting an acquisition or merger may be expended during the search for a target transaction; an attractive acquisition or merger target may not be identified and the SPAC will be required to return any remaining invested funds to shareholders; attractive acquisition or merger targets may become scarce if the number of SPACs seeking to acquire operating businesses increases; any proposed merger or acquisition may be unable to obtain the requisite approval, if any, of SPAC shareholders and/or antitrust and securities regulators; an acquisition or merger once effected may prove unsuccessful and an investment in the SPAC may lose value; the warrants or other rights with respect to the SPAC held by the Fund may expire worthless or may be repurchased or retired by the SPAC at an unfavorable price; the Fund may be delayed in receiving any redemption or liquidation proceeds from a SPAC to which it is entitled; an investment in a SPAC may be diluted by subsequent public or private offerings of securities in the SPAC or by other investors exercising existing rights to purchase securities of the SPAC; SPAC sponsors generally purchase interests in the SPAC at more favorable terms than investors in the IPO or subsequent investors on the open market; no or only a thinly traded market for shares of or interests in a SPAC may develop, leaving the Fund unable to sell its interest in a SPAC or to sell its interest only at a price below what the Fund believes is the SPAC security's value; and the values of investments in SPACs may be highly volatile and may depreciate significantly over time.

**Structured Securities**. Structured securities (often called "structured notes") are debt instruments, the interest rate or principal of which is determined by an underlying indicator. The value of the principal of and/or interest on structured securities is determined by reference to the value of one or more underlying indicators or the difference between underlying indicators. Underlying indicators may include a security or other financial instrument, asset, currency, interest rate, credit rating, commodity, volatility measure or index. If MFS attempts to use a structured security as a hedge against, or as a substitute for, a portfolio investment, the structured security may not correlate as expected with the portfolio investment, resulting in losses to the Fund. While hedging strategies involving structured securities can reduce the risk of loss, they can also reduce the opportunity for gain or even result in losses by offsetting favorable price movements in other Fund investments.

Structured securities may also be subject to liquidity risk since the instruments are often "customized" to meet the portfolio needs of a particular investor, and therefore, the number of investors that are willing and able to buy such instruments in the secondary market may be smaller than that for more traditional debt instruments. In addition, because the purchase and sale of structured securities takes place in an over-the-counter market, structured securities are subject to the creditworthiness of the counterparty of the structured security, and their values may decline substantially if the counterparty's creditworthiness deteriorates. If the counterparty defaults, the other party's risk of loss consists of the amount of payments that the non-defaulting party is contractually entitled to receive.

**Sukuk**. Sukuk are certificates structured to comply with Sharia law and its investment principles. These certificates usually represent the beneficial ownership interest in a portfolio of eligible existing or future tangible or intangible assets ("underlying assets"). In a typical sukuk, a special purpose vehicle (SPV) issues certificates to investors in exchange for their capital. The SPV transfers the capital to or for the benefit of the entity that is raising the capital (the "obligor") in exchange for the underlying assets of the obligor that are held in trust by the SPV. The obligor is obligated, usually through a series of contracts, to make periodic payments to investors through the SPV over a specified period of time and a final payment to investors through the SPV on a date certain. Obligors of sukuk include financial institutions and corporations, foreign governments and agencies of foreign governments, including issuers in emerging markets.

Although under Sharia law, sukuk involve the sharing of profits and losses in the underlying asset financed by the investment in the certificates, most sukuk do not provide investors with bona fide legal ownership of the underlying assets, and the periodic and final payments to sukuk investors are not generally linked to the value of the underlying assets. As a result, most sukuk are considered unsecured obligations whose risks and returns are similar to those of conventional debt instruments. Investors typically have no direct recourse to the underlying assets and do not have a secured claim against the obligor. Sukuk investors are subject to the creditworthiness of the obligor, and the obligor may be unwilling or unable to meet its periodic or final payment obligations. In addition, investors' ability to pursue and enforce actions with respect to these payment obligations or to otherwise enforce the terms of the sukuk, restructure the sukuk, obtain a judgment in a court of competent jurisdiction, and/or attach assets of the obligor may be limited. As with conventional debt instruments, sukuk prices change in response to interest rate changes.

The structural complexity of sukuk and the immaturity of the sukuk market, increases the potential risks of investing in sukuk, including operational, legal, and investment risks. While the sukuk market has grown in recent years, sukuk can be less liquid than other types of investments and it may be difficult at times to invest in or dispose of sukuk. In addition, evolving interpretations of Sharia law by courts or Islamic scholars on sukuk structures and sukuk transferability, or a determination subsequent to the issuance of the sukuk by some Islamic scholars that certain sukuk do not comply with Sharia law and its investment principles, could have a dramatic adverse effect on the price and liquidity of a particular sukuk or the sukuk market in general.

**Swaps**. A swap is an agreement between two parties pursuant to which each party agrees to make one or more payments to the other based on the value of one or more underlying indicators or the difference between underlying indicators. Underlying indicators may include a security or other financial instrument, asset, currency, interest rate, credit rating, commodity, volatility measure, or index. Swaps include "caps," "floors," "collars" and options on swaps, or "swaptions." A "cap" transaction is one in which one party pays a single or periodic fixed amount and the other party pays a floating amount equal to the amount by which a specified fixed or floating rate or other indicator exceeds another rate or indicator (multiplied by a notional amount). A "floor" transaction is one in which one party pays a single or periodic fixed amount and the other party pays a floating amount equal to the excess, if any, of a specified rate or other indicator over a different rate

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or indicator (multiplied by a notional amount). A "collar" transaction is a combination of a cap and a floor in which one party pays the floating amount on the cap and the other party pays the floating amount on the floor. A swaption is an option to enter into a swap agreement. Like other types of options, the buyer of a swaption pays a non-refundable premium for the option and obtains the right, but not the obligation, to enter into the underlying swap on the agreed-upon terms. Swaps can take many different forms and are known by a variety of names and other types of swaps may be available.

Swaps can call for physical delivery of the underlying indicator(s) or payment of the cash settlement on settlement date, depending on the terms of the particular agreement. For example, in certain credit default swaps on a specific security, in the event of a credit event one party agrees to pay par on the security while the other party agrees to deliver the security. Other swap agreements provide for cash settlement. For example, in a typical interest rate swap, one party agrees to pay a fixed rate of interest determined by reference to a specified interest rate or index multiplied by a specified amount (the "notional amount"), while the other party agrees to pay an amount equal to a floating rate of interest determined by reference to an interest rate or index which is reset periodically and multiplied by the same notional amount. Or, for example, in a total return swap, one party agrees to make a series of payments to another party based on the income and price return of the underlying indicator during a specified period, while the other party agrees to make a series of payments calculated by reference to an interest rate or other agreed upon amount. On each payment date, the obligations of parties are netted against each other, with only the net amount paid by one party to the other.

It may not be possible to close out a swap at any particular time or at an acceptable price. The inability to close swap positions also could have an adverse impact on the ability to hedge a portfolio investment or to establish a substitute for a portfolio investment.

Swaps may be entered into for hedging or non-hedging purposes. If MFS attempts to use a swap as a hedge against, or as a substitute for, a portfolio investment, the swap may not correlate as expected with the portfolio investment, resulting in losses to the Fund. While hedging strategies involving swaps can reduce the risk of loss, they can also reduce the opportunity for gain or even result in losses by offsetting favorable price movements in other Fund investments.

Swaps may also be subject to liquidity risk because it may not be possible to close out the swap prior to settlement date and an investor would remain obligated to meet margin requirements until the swap is closed. In addition, swaps that are not centrally cleared are subject to the creditworthiness of the counterparty to the swap, and their values may decline substantially if the counterparty's creditworthiness deteriorates. The credit risk in uncleared swaps is dependent on the creditworthiness of the individual counterparty to the swap and may be greater than the credit risk associated with cleared swaps.

In a cleared transaction, performance of the transaction will be effected by a central clearinghouse rather than by the bank or broker that is the Fund's original counterparty to the transaction. Swaps that are centrally cleared will be subject to the creditworthiness of the FCM(s) and clearing organizations involved in the transaction.

Swaps can provide exposure to a variety of different types of investments or market factors. The most significant factor in the performance of a swap is the change in the underlying price, rate, index level, or other indicator that determines the amount of payments to be made under the arrangement. The risk of loss in trading swaps can be substantial because of the low margin deposits required, the extremely high degree of leverage involved in swaps, and the potential high volatility of the swaps markets. As a result, a relatively small price movement in a swap may result in immediate and substantial loss (or gain) to the investor. Thus, a purchase or sale of a swap may result in unlimited losses. In the event of adverse price movements, an investor would continue to be required to make daily cash payments to maintain its required margin. In addition, for physically settled swaps, on the settlement date an investor may be required to make delivery of the indicators underlying the swaps it holds.

For further information with respect to swaps, see "Derivatives" above.

**Synthetic Local Access Instruments.** Participation notes, market access warrants, and other similarly structured products (collectively, "synthetic local access instruments") are derivative instruments typically used by foreign investors to obtain exposure to investments in certain markets where direct ownership by foreign investors is restricted or limited by local law. Synthetic local access instruments are generally structured by a local branch of a bank, broker/dealer, or other financial institution to replicate exposure to one or more underlying securities. The holder of a synthetic local access instrument may be entitled to receive any dividends paid in connection with the underlying securities, but usually does not receive voting rights as it would if such holder directly owned the underlying securities.

Synthetic local access instruments also involve risks that are in addition to the risks normally associated with a direct investment in the underlying securities. Synthetic local access instruments represent unsecured, contractual obligations of the banks, broker/dealers, or other financial institutions that issue them and are therefore subject to the credit risk of the issuer and the issuer's ability or willingness to perform in accordance with the terms of the instrument. Synthetic local access instruments are subject to the liquidity risk of the underlying security as well as the liquidity risk that a limited or no secondary market exists for trading synthetic local access instruments. In addition, the trading price of a synthetic local access instrument, if any, may not equal the value of the underlying securities.

**Technology and Data Risk.** MFS relies on both proprietary and third-party technology and data in business operations, as well as in providing investment advisory services to the Fund and other client accounts. The technological tools MFS employs include, but are not limited to, software, computer systems, digital systems, algorithms and various forms of automation, including machine learning and natural language processing. The vendors utilized by MFS may, depending on the nature of the services they provide, use similar technologies. MFS uses these technologies to enhance operational efficiency, to support its information technology environment, and to assist various MFS employees in the performance of their roles. As technology advances, MFS expects to continue to explore, test the utility of, and potentially use, a variety of technologies, including emerging forms of technology, such as generative artificial intelligence (GenAI). MFS has adopted policies it believes are reasonably designed to mitigate the potential risks associated with its use of such technologies.

While MFS seeks to utilize reputable vendors and technology partners and seeks to employ reasonable controls with respect to technology and MFS' technology environment, there are nonetheless risks associated with the use of technology. These risks include, but are not limited to: that a technology will not perform as expected or intended; that a technology will change over time without detection by MFS; and that a technology is susceptible to cyber security risk and can be configured or used in a way that leads to unexpected or unintended results. For these and other reasons, the use of technology may result in losses, financial or otherwise, to the Fund. Additionally, legal and regulatory changes, such as those related to information privacy and data protection, may have an impact on the use of existing or emerging technologies, and may impact MFS and the Fund.

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MFS uses a range of data sourced internally or from vendors for a variety of purposes, including for use in the investment management process. MFS seeks to implement reasonable internal data governance practices and use reliable vendor data sources. Nevertheless, data may be inaccurate, incomplete, inconsistent or out-of-date, which may result in losses, financial or otherwise, to a Fund.

**Temporary Defensive Positions**. In response to adverse market, economic, industry, political, or other conditions, MFS may depart from its investment strategies for a Fund by temporarily investing for defensive purposes. MFS may invest a significant portion or all of a Fund's assets in cash (including foreign currency) or cash equivalents, including a money market fund advised by MFS, obligations of banks (including certificates of deposit, bankers' acceptances, time deposits and repurchase agreements), commercial paper, short-term notes, U.S. Government Securities and related repurchase agreements.

**U.S. Government Securities.** U.S. Government securities are securities issued or guaranteed as to the payment of principal and interest by the U.S. Treasury, by an agency or instrumentality of the U.S. Government, or by a U.S. Government-sponsored entity. Certain U.S. Government securities are not supported as to the payment of principal and interest by the full faith and credit of the U.S. Treasury or the ability to borrow from the U.S. Treasury. Some U.S. Government securities are supported as to the payment of principal and interest only by the credit of the entity issuing or guaranteeing the security. U.S. Government securities include mortgage-backed securities and other types of securitized instruments issued or guaranteed by the U.S. Treasury, by an agency or instrumentality of the U.S. Government, or by a U.S. Government-sponsored entity. For securities not backed by the full faith and credit of the United States, a Fund must look principally to the agency or instrumentality issuing or guaranteeing the securities for repayment and may not be able to assert a claim against the United States if the agency or instrumentality does not meet its commitment. Such securities may involve increased risk of loss of principal and interest compared to U.S. Government securities that are backed by the full faith and credit of the United States. It is possible that the U.S. Government may experience credit downgrades. The recent downgrades by major rating agencies have introduced greater uncertainty about the ability of the U.S. to repay its obligations. Further credit rating downgrades or a U.S. credit default may result in increased volatility or liquidity risk, higher interest rates and lower prices for U.S. government securities and increased costs for all kinds of debt. Such a credit event may adversely affect the financial markets and securities held by the Fund. In addition, from time to time, uncertainty regarding the status of negotiations in the U.S. Congress to increase the statutory debt ceiling could increase the risk that the U.S. Government may default on payments of certain U.S. Government securities, cause the credit rating of the U.S. Government to be downgraded, increase volatility in the stock and bond markets, result in higher interest rates, reduce prices of U.S. Treasury securities, and/or increase the costs of various types of debt instruments, which may adversely affect the Fund.

**Variable and Floating Rate Securities.** Variable and floating rate securities are debt instruments that provide for periodic adjustments in the interest rate paid on the security. Variable rate securities provide for a specified periodic adjustment in the interest rate, while floating rate securities have interest rates that may change with changes to the level of prevailing interest rates or the issuer's credit quality. There is a risk that the current interest rate on variable and floating rate securities may not accurately reflect current market interest rates or adequately compensate the holder for the current creditworthiness of the issuer. Moreover, because rates on certain floating rate debt securities typically reset only periodically, changes in prevailing interest rates (and particularly sudden and significant changes) can cause fluctuations in value of floating rate debt securities held by the Fund. Variable and floating rate securities may decline in value if their interest rates do not rise as much, or as quickly, as interest rates in general. Conversely, floating rate securities will not generally increase in value if interest rates decline. Inverse floating rate securities may decrease in value if interest rates increase. Inverse floating rate securities may also exhibit greater price volatility than a fixed rate obligation with similar credit quality. When the Fund holds variable or floating rate securities, a decrease (or, in the case of inverse floating rate securities, an increase) in market interest rates will adversely affect the income received from such securities.

Some variable or floating rate securities are structured with liquidity features such as (1) put options or tender options that permit holders (sometimes subject to conditions) to demand payment of the unpaid principal balance plus accrued interest from the issuers or certain financial intermediaries or (2) auction rate features, remarketing provisions, or other maturity-shortening devices designed to enable the issuer to refinance or redeem outstanding debt securities (market-dependent liquidity features). The market-dependent liquidity features may not operate as intended as a result of the issuer's declining creditworthiness, adverse market conditions, or other factors or the inability or unwillingness of a participating broker/dealer to make a secondary market for such securities. As a result, variable or floating rate securities that include market-dependent liquidity features may lose value and the holders of such securities may be required to retain them for an extended period of time or until maturity.

**Warrants**. Warrants are derivative instruments which entitle the holder to buy an equity security at a specific price for a specific period of time. Warrants can be physically or cash settled depending on the terms of the warrant and can be issued by the issuer of the underlying equity security or a third party. Warrants involve a counterparty to the transaction. Changes in the value of a warrant do not necessarily correspond to changes in the value of its underlying security. The price of a warrant may be more volatile than the price of its underlying security, and a warrant may offer greater potential for capital appreciation as well as capital loss. Warrants do not entitle a holder to dividends or voting rights with respect to the underlying security and do not represent any rights in the assets of the issuing company. A warrant ceases to have value if it is not exercised prior to its expiration. These factors can make warrants more speculative than other types of investments.

**When-Issued, Delayed Delivery, and Forward Commitment Transactions.** When-issued, delayed delivery, and forward commitment transactions, including securities purchased or sold in the to be announced (TBA) market, involve a commitment to purchase or sell a specific security at a predetermined price or yield at which payment and delivery take place after the customary settlement period for that type of security. Typically, no interest accrues to the purchaser until the security is delivered. When purchasing securities pursuant to one of these transactions, payment for the securities is not required until the delivery date. However, the purchaser assumes the rights and risks of ownership, including the risks of price and yield fluctuations and the risk that the security will not be issued or delivered as anticipated, and the seller loses the opportunity to benefit if the price of the security rises. If a Fund makes additional investments while a delayed delivery purchase is outstanding, this may result in a form of leverage. When a Fund has sold a security pursuant to one of these transactions, the Fund does not participate in further gains or losses with respect to the security. If the other party to a delayed delivery transaction fails to deliver or pay for the securities, a Fund could miss a favorable price or yield opportunity or suffer a loss. A Fund may renegotiate a when-issued, delayed delivery, or forward commitment transaction and may sell the underlying securities before delivery, which may result in capital gains or losses for the Fund.

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*TBA Transactions.* A Fund may engage in purchases or sales of TBA securities, which usually are transactions in which a Fund buys or sells mortgage-backed securities on a delayed delivery or forward commitment basis. A TBA transaction typically does not designate the actual security to be delivered and only includes an approximate principal amount. TBA trades can be used by a Fund for investment purposes in order to gain or reduce exposure to certain securities, or for hedging purposes to adjust the risk exposure of a Fund's portfolio without having to restructure the portfolio. Purchases and sales of TBA securities involve risks similar to those discussed above for other delayed delivery and forward commitment purchase and sale transactions. In addition, when a Fund sells TBA securities, it incurs risks similar to those incurred in short sales. For example, when a Fund sells TBA securities without owning or having the right to obtain the deliverable securities, it incurs a risk of loss because it could have to purchase the securities at a price that is higher than the price at which it sold them. Also, a Fund may be unable to purchase the deliverable securities if the corresponding market is illiquid.

FINRA rules include mandatory margin requirements for the TBA market with limited exceptions. The collateralization of TBA trades is intended to mitigate counterparty credit risk between trade and settlement, but could increase the cost of TBA transactions and impose added operational complexity.

**Zero Coupon Bonds, Deferred Interest Bonds, and Payment-In-Kind Bonds.** Zero coupon and deferred interest bonds are debt instruments which are issued at a discount from face value. The discount approximates the total amount of interest the instruments will accrue and compound over the period until maturity or the first interest payment date at a rate of interest reflecting the market rate of the instrument at the time of issuance. While zero coupon bonds do not require the periodic payment of interest, deferred interest bonds provide for a period of delay before the regular payment of interest begins. Payment-in-kind bonds are debt instruments which provide that the issuer may, at its option, pay interest on such instruments in cash or in the form of additional debt instruments. Such instruments may involve greater credit risks and may experience greater volatility than debt instruments which pay interest in cash currently.

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#### APPENDIX I - INVESTMENT RESTRICTIONS
Fundamental investment restrictions cannot be changed without the approval of a Majority Shareholder Vote. Non-fundamental policies, if any, can be changed without shareholder approval.

MFS Active Core Plus Bond ETF, MFS Active Growth ETF, MFS Active Intermediate Muni Bond ETF, MFS Active International ETF, MFS Active International Value ETF, MFS Active Mid Cap ETF, MFS Active Value ETF, MFS Blended Research Core Equity ETF, MFS Blended Research Emerging Markets Equity ETF, MFS Blended Research International Equity ETF, and MFS Blended Research Small-Mid Cap ETF:

As fundamental investment restrictions, the Fund:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. May borrow money to the extent not prohibited by applicable law.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. May underwrite securities issued by other persons to the extent not prohibited by applicable law.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3. May issue senior securities to the extent not prohibited by applicable law.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4. May make loans to the extent not prohibited by applicable law.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5. May purchase or sell real estate or commodities to the extent not prohibited by applicable law.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6. May not purchase any securities of an issuer (other than securities issued or guaranteed by the U.S. Government or its agencies or instrumentalities; tax-exempt obligations issued or guaranteed by a U.S. territory or possession, a state or local government, or a political subdivision of any of the foregoing; or securities issued by investment companies) in a particular industry or group of industries if as a result 25% or more of its total assets (taken at market value at the time of purchase) would be invested in securities of issuers whose principal business activities are in the same industry or group of industries.

Except for the Fund's fundamental investment restriction No. 1, these investment restrictions are adhered to at the time of purchase or utilization of assets; a subsequent change in circumstances will not be considered to result in a violation of policy.

For purposes of fundamental investment restriction No. 6, the Fund will consider the stated industry concentration policies of underlying investment companies, to the extent they are known to the Fund, when making investments.

For purposes of fundamental investment restriction No. 6, MFS uses a customized set of industry groups for classifying securities based on classifications developed by third party providers.

For purposes of fundamental investment restriction No. 6, the Fund will look through a private activity municipal bond whose principal and interest payments are derived principally from the assets and revenues of a non-governmental entity in determining the industry classification of the investment.

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#### APPENDIX J - PORTFOLIO TRANSACTIONS AND BROKERAGE COMMISSIONS

#### Brokerage Commissions
The following brokerage commissions were paid by the Fund during the specified time periods:

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| | | |
|:---|:---|:---|
| **Fund** | **Fiscal Year Ended** | **Brokerage Commissions Paid by Fund** |
| MFS Active Core Plus Bond ETF (commenced December 5, 2024) | February 28, 2025 | $389 |
| MFS Active Growth ETF (commenced December 5, 2024) | February 28, 2025 | $136 |
| MFS Active Intermediate Muni Bond ETF (commenced December 5, 2024) | February 28, 2025 | $853 |
| MFS Active International ETF (commenced December 5, 2024) | February 28, 2025 | $7387 |
| MFS Active International Value ETF<sup>1</sup> | February 28, 2026 | Not Applicable |
| MFS Active Mid Cap ETF (commenced September 24, 2025) | February 28, 2025 | Not Applicable |
| MFS Active Value ETF (commenced December 5, 2024) | February 28, 2025 | $162 |
| MFS Blended Research Core Equity ETF (commenced October 22, 2025) | February 28, 2025 | Not Applicable |
| MFS Blended Research Emerging Markets Equity ETF (commenced March 5, 2026) | February 28, 2025 | Not Applicable |
| MFS Blended Research International Equity ETF (commenced October 22, 2025) | February 28, 2025 | Not Applicable |
| MFS Blended Research Small-Mid Cap ETF<sup>1</sup>  | February 28, 2026 | Not Applicable |

---

<sup>1</sup> The Fund had not commenced operations as of the date of this SAI.

#### Securities Issued by Regular Broker/Dealers
During the fiscal year ended February 28, 2026, the Fund purchased securities issued by the following regular broker/dealers of the Fund, and the following table sets forth the value of the Fund's aggregate holdings of the securities of each such issuer as of February 28, 2026:

---

| | | |
|:---|:---|:---|
| **Fund** | **Broker/Dealer** | **Value of Securities** |
| MFS Active Core Plus Bond ETF (commenced December 5, 2024) | &nbsp;&nbsp;&nbsp;BANK OF AMERICA CORP. | $488696 |
|  | &nbsp;&nbsp;&nbsp;GOLDMAN SACHS GROUP INC | $339687 |
|  | &nbsp;&nbsp;&nbsp;JPMORGAN CHASE & CO. | $446718 |
|  | &nbsp;&nbsp;&nbsp;MORGAN STANLEY | $552175 |
| MFS Active Growth ETF (commenced December 5, 2024) |  | Not Applicable |
| MFS Active Intermediate Muni Bond ETF (commenced December 5, 2024) |  | Not Applicable |

---

J - 1

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---

| | | |
|:---|:---|:---|
| **Fund** | **Broker/Dealer** | **Value of Securities** |
| MFS Active International ETF (commenced December 5, 2024) |  | Not Applicable |
| MFS Active International Value ETF |  | Not Applicable |
| MFS Active Mid Cap ETF (commenced September 23, 2025) |  | Not Applicable |
| MFS Active Value ETF (commenced December 5, 2024) | &nbsp;&nbsp;&nbsp;BANK OF AMERICA CORP. | $890560 |
|  | &nbsp;&nbsp;&nbsp;JPMORGAN CHASE & CO. | $2141019 |
| MFS Blended Research Core Equity ETF (commenced October 23, 2025) |  | Not Applicable |
| MFS Blended Research Emerging Markets Equity ETF (commenced March 5, 2026) |  | Not Applicable |
| MFS Blended Research International Equity ETF (commenced October 23, 2025) |  | Not Applicable |
| MFS Blended Research Small-Mid Cap ETF |  | Not Applicable |

---

J - 2

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#### APPENDIX K - RECIPIENTS OF NON-PUBLIC PORTFOLIO HOLDINGS ON AN ONGOING BASIS
This list of recipients below is current as of April 22, 2026, and any additions, modifications, or deletions to this list that have occurred since that date are not reflected.

---

| | |
|:---|:---|
| **Name of Recipient** | **Purpose of Disclosure** |
| AcadiaSoft | Software Vendor |
| BBH (Brown Brothers Harriman) Infomediary | System / Data Transmission Vendor |
| Bloomberg Indices | Software Vendor |
| Bloomberg, L.P. | Analytical Tool |
| Board of Trustees | Fund Governance |
| Broadridge Securities Processing Solutions, LLC | Agency TBA and Mortgage Pool Vendor |
| Capital Confirmations, Inc. | Electronic Confirmation Services Between Fund Auditors and Brokers |
| Commcise | Consultant |
| Confluence | Regulatory Reporting System |
| Deloitte & Touche LLP\* | Independent Registered Public Accounting Firm for Certain of the MFS Funds |
| Deutsche Bank Securities Inc. | Intermediary |
| Donnelley Financial Solutions (DFIN) | Software Vendor |
| Ernst & Young LLP\* | Independent Registered Public Accounting Firm for Certain of the MFS Funds |
| FactSet Research Systems, Inc. | Analytical Tool |
| Goldman Sachs Asset Management, L.P.\*\* | Investment Advisor |
| ICE Data Services | Fund Pricing |
| Institutional Shareholder Services, Inc.  | Proxy Service Provider |
| Investcloud | Software Vendor |
| Investment Company Institute | Trade Association |
| JP Morgan Chase Bank\*\*\* | Fund Custodian for Certain of the MFS Funds |
| J.P. Morgan Securities, Inc.\*\*\*\* | Analytical Tool |
| Markit Group | Pricing Service |
| Massachusetts Financial Services Company | Fund Management |
| MFS Fund Distributors, Inc. | Fund Distribution |
| MSCI BARRA, Inc. | Analytical Tool |
| OMGEO LLC | Software Vendor |
| Parametric Portfolio Associates LLC | Overlay Manager |
| RiskMetrics Group, LLC | Risk Management Tool |
| Ropes & Gray LLP | Legal Counsel |
| SageView Advisory Group LLC | Consultant |
| Service Graphics | Analytical Tool |
| State Street Bank and Trust Company\*\*\* | Fund Custodian for Certain of the MFS Funds |
| Toppan Merrill LLC | Software Vendor |
| Virtu ITG LLC | Analytical Tool |

---

\* Receives non-public portfolio holdings information only for those MFS Funds for which it is the Independent Registered Public Accounting Firm.

\*\* Goldman Sachs Asset Management, L.P. acts as a discretionary investment advisor to KPMG, LLP ("KPMG") and receives limited non-public holdings information for certain MFS Funds to assist KPMG in satisfying auditor independence rules.

\*\*\* Receives non-public portfolio holdings information only for those MFS Funds for which it is the Custodian.

\*\*\*\* JP Morgan Securities receives non-public portfolio holdings information for MFS High Income Fund only.

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#### APPENDIX L - DESCRIPTION OF RATINGS
The ratings of Moody's Investors Service (Moody's), S&P Global Ratings, Fitch Ratings, Inc. (Fitch), Morningstar DBRS (DBRS<sup>®</sup>), and Kroll Bond Rating Agency (KBRA) represent their opinions as to the quality of various debt instruments. It should be emphasized, however, that ratings are not absolute standards of quality. Consequently, debt instruments with the same maturity, coupon and rating may have different yields while debt instruments of the same maturity and coupon with different ratings may have the same yield.

#### Excerpts From Moody's Description of its Ratings
Moody's long-term ratings are assigned to issuers or obligations with an original maturity of eleven months or more and reflect both on the likelihood of a default or impairment on contractual financial obligations and the expected financial loss suffered in the event of default or impairment.

**Aaa** Obligations rated Aaa are judged to be of the highest quality subject to the lowest level of credit risk.

**Aa** Obligations rated Aa are judged to be of high quality and are subject to very low credit risk.

**A** Obligations rated A are judged to be upper-medium grade and are subject to low credit risk.

**Baa** Obligations rated Baa are judged to be medium grade and subject to moderate credit risk; and as such may possess certain speculative characteristics.

**Ba** Obligations rated Ba are judged to be speculative and are subject to substantial credit risk.

**B** Obligations rated B are considered speculative and are subject to high credit risk.

**Caa** Obligations rated Caa are judged to be speculative of poor standing and are subject to very high credit risk.

**Ca** Obligations rated Ca are highly speculative and are likely in, or very near, default, with some prospect of recovery of principal and interest.

**C** Obligations rated C are the lowest rated and are typically in default, with little prospect for recovery of principal or interest.

Note: Moody's appends numerical modifiers 1, 2, and 3 to each generic rating classification from Aa through Caa. The modifier 1 indicates that the obligation ranks in the higher end of its generic rating category; the modifier 2 indicates a midrange ranking; and the modifier 3 indicates a ranking in the lower end of that generic rating category.

#### Excerpts From S&P Global Ratings' Description of its Ratings
Issue credit ratings are based, in varying degrees, on S&P Global Ratings' analysis of the following considerations:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· The likelihood of payment - the capacity and willingness of the obligor to meet its financial commitments on an obligation in accordance with the terms of the obligation;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· The nature and provisions of the financial obligation, and the promise S&P Global Ratings imputes; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· The protection afforded by, and relative position of, the financial obligation in the event of a bankruptcy, reorganization, or other arrangement under the laws of bankruptcy and other laws affecting creditors' rights.

An issue rating is an assessment of default risk but may incorporate an assessment of relative seniority or ultimate recovery in the event of default. Junior obligations are typically rated lower than senior obligations, to reflect lower priority in bankruptcy, as noted above. (Such differentiation may apply when an entity has both senior and subordinated obligations, secured and unsecured obligations, or operating company and holding company obligations.)

**AAA** An obligation rated 'AAA' has the highest rating assigned by S&P Global Ratings. The obligor's capacity to meet its financial commitments on the obligation is extremely strong.

**AA** An obligation rated 'AA' differs from the highest-rated obligations only to a small degree. The obligor's capacity to meet its financial commitments on the obligation is very strong.

**A** An obligation rated 'A' is somewhat more susceptible to the adverse effects of changes in circumstances and economic conditions than obligations in higher-rated categories. However, the obligor's capacity to meet its financial commitments on the obligation is still strong.

**BBB** An obligation rated 'BBB' exhibits adequate protection parameters. However, adverse economic conditions or changing circumstances are more likely to weaken the obligor's capacity to meet its financial commitments on the obligation.

L - 1

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**BB, B, CCC, CC, and C** Obligations rated 'BB', 'B', 'CCC', 'CC', and 'C' are regarded as having significant speculative characteristics. 'BB' indicates the least degree of speculation and 'C' the highest. While such obligations will likely have some quality and protective characteristics, these may be outweighed by large uncertainties or major exposure to adverse conditions.

**BB** An obligation rated 'BB' is less vulnerable to nonpayment than other speculative issues. However, it faces major ongoing uncertainties or exposure to adverse business, financial, or economic conditions that could lead to the obligor's inadequate capacity to meet its financial commitments on the obligation.

**B** An obligation rated 'B' is more vulnerable to nonpayment than obligations rated 'BB', but the obligor currently has the capacity to meet its financial commitments on the obligation. Adverse business, financial, or economic conditions will likely impair the obligor's capacity or willingness to meet its financial commitments on the obligation.

**CCC** An obligation rated 'CCC' is currently vulnerable to nonpayment and is dependent upon favorable business, financial, and economic conditions for the obligor to meet its financial commitments on the obligation. In the event of adverse business, financial, or economic conditions, the obligor is not likely to have the capacity to meet its financial commitments on the obligation.

**CC** An obligation rated 'CC' is currently highly vulnerable to nonpayment. The 'CC' rating is used when a default has not yet occurred but S&P Global Ratings expects default to be a virtual certainty, regardless of the anticipated time to default.

**C** An obligation rated 'C' is currently highly vulnerable to nonpayment, and the obligation is expected to have lower relative seniority or lower ultimate recovery compared with obligations that are rated higher.

**D** An obligation rated 'D' is in default or in breach of an imputed promise. For non-hybrid capital instruments, the 'D' rating category is used when payments on an obligation are not made on the date due, unless S&P Global Ratings believes that such payments will be made within the next five business days in the absence of a stated grace period or within the earlier of the stated grace period or the next 30 calendar days. The 'D' rating also will be used upon the filing of a bankruptcy petition or the taking of similar action and where default on an obligation is a virtual certainty, for example due to automatic stay provisions. A rating on an obligation is lowered to 'D' if it is subject to a distressed debt restructuring.

Ratings from 'AA' to 'CCC' may be modified by the addition of a plus (+) or minus (-) sign to show relative standing within the rating categories.

#### Excerpts from Fitch's Description of its Ratings
Rated entities in several sectors, including financial and non-financial corporations, sovereigns, insurance companies and some sectors within public finance, are generally assigned Issuer Default Ratings (IDRs). IDRs are also assigned to certain entities or enterprises in global infrastructure, project finance and public finance. IDRs opine on an entity's relative vulnerability to default –including by way of a distressed debt exchange (DDE) – on financial obligations. The threshold default risk addressed by the IDR is generally that of the financial obligations whose non-payment would best reflect the uncured failure of that entity. As such, IDRs also address relative vulnerability to bankruptcy, administrative receivership or similar concepts.

**In aggregate, IDRs provide an ordinal ranking of issuers based on the agency's view of their relative vulnerability to default, rather than a prediction of a specific percentage likelihood of default.** 

**AAA:** Highest Credit Quality

'AAA' ratings denote the lowest expectation of default risk. They are assigned only in cases of exceptionally strong capacity for payment of financial commitments. This capacity is highly unlikely to be adversely affected by foreseeable events.

**AA:** Very High Credit Quality

'AA' ratings denote expectations of very low default risk. They indicate very strong capacity for payment of financial commitments. This capacity is not significantly vulnerable to foreseeable events.

**A:** High Credit Quality

'A' ratings denote expectations of low default risk. The capacity for payment of financial commitments is considered strong. This capacity may, nevertheless, be more vulnerable to adverse business or economic conditions than is the case for higher ratings.

**BBB:** Good Credit Quality

'BBB' ratings indicate that expectations of default risk are currently low. The capacity for payment of financial commitments is considered adequate, but adverse business or economic conditions are more likely to impair this capacity.

L - 2

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**BB:** Speculative

'BB' ratings indicate an elevated vulnerability to default risk, particularly in the event of adverse changes in business or economic conditions over time; however, business or financial flexibility exists that supports the servicing of financial commitments.

**B:** Highly Speculative

'B' ratings indicate that material default risk is present, but a limited margin of safety remains. Financial commitments are currently being met; however, capacity for continued payment is vulnerable to deterioration in the business and economic environment.

#### CCC: Substantial Credit Risk
Very low margin for safety. Default is a real possibility.

**CC**: Very High Levels of Credit Risk

Default of some kind appears probable.

**C:** Near Default

A default or default-like process has begun, or for a closed funding vehicle, payment capacity is irrevocably impaired. Conditions that are indicative of a 'C' category rating for an issuer include:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· The issuer has entered into a grace or cure period following non-payment of a material financial obligation;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· The formal announcement by the issuer or their agent of a DDE; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· A closed financing vehicle where payment capacity is irrevocably impaired such that it is not expected to pay interest and/or principal in full during the life of the transaction, but where no payment default is imminent.

**RD:** Restricted Default

'RD' ratings indicate an issuer that in Fitch's opinion has experienced:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· An uncured payment default or DDE on a bond, loan or other material financial obligation, but

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· Has not entered into bankruptcy filings, administration, receivership, liquidation, or other formal winding-up procedure, and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· Has not otherwise ceased operating.

This would include:

- The selective payment default on a specific class or currency of debt;

- The uncured expiry of any applicable original grace period, cure period or default forbearance period following a payment default on a bank loan, capital markets security or other material financial obligation.

**D:** Default

'D' ratings indicate an issuer that in Fitch's opinion has entered into bankruptcy filings, administration, receivership, liquidation or other formal winding-up procedure or that has otherwise ceased business and debt is still outstanding.

Default ratings are not assigned prospectively to entities or their obligations; within this context, non-payment on an instrument that contains a deferral feature or grace period will generally not be considered a default until after the expiration of the deferral or grace period, unless a default is otherwise driven by bankruptcy or other similar circumstance, or by a DDE.

In all cases, the assignment of a default rating reflects the agency's opinion as to the most appropriate rating category consistent with the rest of its universe of ratings and may differ from the definition of default under the terms of an issuer's financial obligations or local commercial practice.

#### Excerpts From DBRS' <sup>®</sup> Description of its Ratings
The DBRS<sup>®</sup> long-term credit ratings provide opinions on risk of default. DBRS<sup>®</sup> considers risk of default to be the risk that an issuer will fail to satisfy the financial obligations in accordance with the terms under which a long-term obligation has been issued. The long-term obligations rated in this category typically have a term of one year or longer.

All rating categories from AA to CCC contain the subcategories (high) and (low). The absence of either a (high) or (low) designation indicates that the rating is in the middle of the category.

**AAA** Highest credit quality. The capacity for the payment of financial obligations is exceptionally high and unlikely to be adversely affected by future events.

**AA** Superior credit quality. The capacity for the payment of financial obligations is considered high. Credit quality differs from AAA only to a small degree. Unlikely to be significantly vulnerable to future events.

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**A** Good credit quality. The capacity for the payment of financial obligations is substantial, but of lesser credit quality than AA. May be vulnerable to future events, but qualifying negative factors are considered manageable.

**BBB** Adequate credit quality. The capacity for the payment of financial obligations is considered acceptable. May be vulnerable to future events.

**BB** Speculative, non-investment-grade credit quality. The capacity for the payment of financial obligations is uncertain. Vulnerable to future events.

**B** Highly speculative credit quality. There is a high level of uncertainty as to the capacity to meet financial obligations.

**CCC / CC / C** Very highly speculative credit quality. In danger of defaulting on financial obligations. There is little difference between these three categories, although CC and C ratings are normally applied to obligations that are seen as highly likely to default or subordinated to obligations rated in the CCC to B range. Obligations in respect of which default has not technically taken place, but is considered inevitable, may be rated in the C category.

**D** When the issuer has filed under any applicable bankruptcy, insolvency, or winding-up statute or there is a failure to satisfy an obligation after the exhaustion of grace periods, a downgrade to D may occur. DBRS may also use SD (Selective Default) in cases where only some securities are impacted, such as the case of a distressed exchange.

#### Excerpts From KBRA's Description of its Ratings
KBRA assigns credit ratings to issuers and their obligations using the same rating scale. In either case, KBRA's ratings are intended to reflect both the probability of default and severity of loss in the event of default, with greater emphasis on probability of default at higher rating categories. For obligations, the determination of expected loss severity is, among other things, a function of the seniority of the claim. Generally speaking, issuer-level ratings assume a loss severity consistent with a senior unsecured claim. KBRA appends an (sf) indicator to ratings assigned to structured obligations. These definitions should be used in conjunction with KBRA's rating methodologies.

**AAA** Determined to have almost no risk of loss due to credit-related events. Assigned only to the very highest quality obligors and obligations able to survive extremely challenging economic events.

**AA** Determined to have minimal risk of loss due to credit-related events. Such obligors and obligations are deemed very high quality.

**A** Determined to be of high quality with a small risk of loss due to credit-related events. Issuers and obligations in this category are expected to weather difficult times with low credit losses.

**BBB** Determined to be of medium quality with some risk of loss due to credit-related events. Such issuers and obligations may experience credit losses during stressed environments.

**BB** Determined to be of low quality with moderate risk of loss due to credit-related events. Such issuers and obligations have fundamental weaknesses that create moderate credit risk.

**B** Determined to be of very low quality with high risk of loss due to credit-related events. These issuers and obligations contain many fundamental shortcomings that create significant credit risk.

**CCC** Determined to be at substantial risk of loss due to credit-related events, near default, or in default with high recovery expectations.

**CC** Determined to be near default or in default with average recovery expectations.

**C** Determined to be near default or in default with low recovery expectations.

**D** KBRA defines default as occurring if:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· There is a missed interest payment, principal payment, or preferred dividend payment, as applicable, on a rated obligation which is unlikely to be recovered.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· The rated entity files for protection from creditors, is placed into receivership, or is closed by regulators such that a missed payment is likely to result.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· The rated entity seeks and completes a distressed exchange, where existing rated obligations are replaced by new obligations with a diminished economic value.

KBRA may append - or + modifiers to ratings in categories AA through CCC to indicate, respectively, upper and lower risk levels within the broader category.

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#### APPENDIX M – INCOME AND FEES RELATED TO SECURITIES LENDING ACTIVITIES
During the fiscal year ended February 28, 2026, there were no income or fees related to securities lending activities of MFS Active Core Plus Bond ETF, MFS Active Growth ETF, MFS Active Intermediate Muni Bond ETF, MFS Active International ETF, MFS Active International Value ETF (Fund had not commenced operations as of February 28, 2026), MFS Active Mid Cap ETF (commenced September 24, 2025), MFS Active Value ETF, MFS Blended Research Core Equity ETF (commenced October 22, 2025), MFS Blended Research Emerging Markets Equity ETF (commenced March 5, 2026), MFS Blended Research International Equity ETF (commenced October 22, 2025), and MFS Blended Research Small-Mid Cap ETF (Fund had not commenced operations as of February 28, 2026).<br>

M - 1

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#### APPENDIX N – INDEX PROVIDER INFORMATION
MFS has entered into agreements with various index providers authorizing the use of certain trademarks, trade names and information in connection with the offering and/or promotion of certain of the MFS Funds. Information regarding certain of these agreements is included below.

#### Bloomberg Indices
Bloomberg<sup>®</sup> and the Bloomberg Indices are service marks of Bloomberg Finance L.P. and its affiliates, including Bloomberg Index Services Limited ("BISL"), the administrator of the Bloomberg Indices (collectively, "Bloomberg"), and have been licensed for use for certain purposes by MFS. The Fund is not sponsored, endorsed, sold or promoted by Bloomberg. Bloomberg does not make any representation or warranty, express or implied, to the owners of or counterparties to the Fund or any member of the public regarding the advisability of investing in securities generally or in the Fund particularly. The only relationship of Bloomberg to MFS is the licensing of certain trademarks, trade names and service marks and of the Bloomberg Indices, which are determined, composed and calculated by BISL without regard to MFS or the Fund. Bloomberg has no obligation to take the needs of MFS or the owners of the Fund into consideration in determining, composing or calculating the Bloomberg Indices. Bloomberg is not responsible for and has not participated in the determination of the timing of, prices at, or quantities of the Fund to be issued. Bloomberg shall not have any obligation or liability, including, without limitation, to Fund customers, in connection with the administration, marketing or trading of the Fund.

Bloomberg does not guarantee the accuracy and/or the completeness of the Bloomberg Indices or any data related thereto and shall have no liability for any errors, omissions, or interruptions therein. Bloomberg does not make any warranty, express or implied, as to results to be obtained by MFS, owners of the Fund, or any other person or entity from the use of the Bloomberg Indices or any data related thereto. Bloomberg does not make any express or implied warranties and expressly disclaims all warranties of merchantability or fitness for a particular purpose or use with respect to the Bloomberg Indices or any data related thereto. Without limiting any of the foregoing, to the maximum extent allowed by law, Bloomberg, its licensors, and its and their respective employees, contractors, agents, suppliers, and vendors shall have no liability or responsibility whatsoever for any injury or damages – whether direct, indirect, consequential, incidental, punitive or otherwise – arising in connection with the Fund or Bloomberg Indices or any data or values relating thereto – whether arising from their negligence or otherwise, even if notified of the possibility thereof.

#### FTSE EPRA Nareit
The Fund has been developed solely by MFS. The Fund is not in any way connected to or sponsored, endorsed, sold or promoted by the London Stock Exchange Group plc and its group undertakings, including FTSE International Limited (collectively, the "LSE Group"), European Public Real Estate Association ("EPRA"), or the National Association of Real Estate Investments Trusts ("Nareit") (and together the "Licensor Parties"). FTSE Russell is a trading name of certain of the LSE Group companies. All rights in the FTSE EPRA Nareit Developed Real Estate Index (the "Index") vest in the Licensor Parties. "FTSE<sup>®</sup>" and "FTSE Russell<sup>®</sup>" are a trade mark(s) of the relevant LSE Group company and are used by any other LSE Group company under license. "Nareit<sup>®</sup>" is a trade mark of Nareit, "EPRA<sup>®</sup>" is a trade mark of EPRA and all are used by the LSE Group under license. The Index is calculated by or on behalf of FTSE International Limited or its affiliate, agent or partner. The Licensor Parties do not accept any liability whatsoever to any person arising out of (a) the use of, reliance on or any error in the Index or (b) investment in or operation of the Fund. The Licensor Parties makes no claim, prediction, warranty or representation either as to the results to be obtained from the Fund or the suitability of the Index for the purpose to which it is being put by MFS.

#### FTSE Russell
The Fund has been developed solely by MFS. The Fund is not in any way connected to or sponsored, endorsed, sold or promoted by the London Stock Exchange Group plc and its group undertakings (collectively, the "LSE Group"). FTSE Russell is a trading name of certain of the LSE Group companies. All rights in the FTSE Russell Indexes (the "Indexes") vest in the relevant LSE Group company which owns the Index. "FTSE<sup>®</sup>", "Russell<sup>®</sup>" and "FTSE Russell<sup>®</sup>" are trademarks of the relevant LSE Group company and are used by any other LSE Group company under license. The Indexes are calculated by or on behalf of FTSE International Limited or FTSE Fixed Income, LLC, or their affiliate, agent or partner. The LSE Group does not accept any liability whatsoever to any person arising out of (a) the use of, reliance on or any error in the Index or (b) investment in or operation of the Fund. The LSE Group makes no claim, prediction, warranty or representation either as to the results to be obtained from the Fund or the suitability of the Index for the purpose to which it is being put by MFS.

#### ICE Data Indices
ICE Data Indices, LLC ("ICE Data"), is used with permission. ICE Data, its affiliates and their respective third party suppliers disclaim any and all warranties and representations, express and/or implied, including any warranties of merchantability or fitness for a particular purpose or use, including the indices, index data and any data included in, related to, or derived therefrom. Neither ICE Data, its affiliates nor their respective third party suppliers shall be subject to any damages or liability with respect the adequacy, accuracy, timeliness or completeness of the indices or the index data or any component thereof, and the indices and the index data and all components thereof are provided on an "as is" basis and your use is at your own risk. ICE Data, its affiliates and their respective third party suppliers do not sponsor, endorse or recommend MFS, or any of its products or services.

N - 1

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#### MSCI
Morgan Stanley Capital International ("MSCI") makes no express or implied warranties or representations and shall have no liability whatsoever with respect to any MSCI data contained herein. The MSCI data may not be further redistributed or used as a basis for other indices or any securities or financial products. This report is not approved, reviewed, or produced by MSCI.

#### S&P Dow Jones
"Standard & Poor's<sup>®</sup>" and "S&P<sup>®</sup>" are registered trademarks of Standard & Poor's Financial Services LLC ("S&P") and Dow Jones is a registered trademark of Dow Jones Trademark Holdings LLC ("Dow Jones") and have been licensed for use by S&P Dow Jones Indices LLC and sublicensed for certain purposes by MFS. The S&P 500<sup>®</sup> is a product of S&P Dow Jones Indices LLC, and has been licensed for use by MFS. The Fund is not sponsored, endorsed, sold, or promoted by S&P Dow Jones Indices LLC, Dow Jones, S&P, or their respective affiliates, and neither S&P Dow Jones Indices LLC, Dow Jones, S&P, nor their respective affiliates make any representation regarding the advisability of investing in the Fund.

N - 2

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#### Investment Adviser
Massachusetts Financial Services Company

111 Huntington Avenue, Boston, MA 02199

(617) 954-5000

#### Distributor
MFS Fund Distributors, Inc.

111 Huntington Avenue, Boston, MA 02199

(617) 954-5000

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## MFS <sup>®</sup> ACTIVE EXCHANGE TRADED FUNDS TRUST
**MFS<sup>®</sup> ACTIVE INTERNATIONAL VALUE ETF**

#### MFS <sup>®</sup> BLENDED RESEARCH <sup>®</sup> SMALL-MID CAP ETF

#### PART C

#### Item 28. Exhibits
(a) 1 [Declaration of Trust, dated February 26, 2024, Establishment and Designation of MFS Active Core Plus Bond ETF, MFS Active Growth ETF, MFS Active International ETF, MFS Active Intermediate Muni Bond ETF, and MFS Active Value ETF, previously filed as Exhibit (a) 1 of the Registrant's Initial Registration Statement on Form N-1A, filed on April 15, 2024.](http://www.sec.gov/Archives/edgar/data/2018846/000174177324001433/ex99acharter-1.htm)

2 [Amended and Restated Declaration of Trust, dated March 6, 2024, previously filed as Exhibit (a) 2 of the Registrant's Initial Registration Statement on Form N-1A, filed on April 15, 2024.](http://www.sec.gov/Archives/edgar/data/2018846/000174177324001433/ex99acharter-2.htm)

3 [Certificate of Amendment, dated June 11, 2025, to the Declaration of Trust – Establishment and Designation of Series for MFS Active Mid Cap ETF, previously filed as Exhibit (a) 3 of the Registrant's Post-Effective Amendment No. 1, filed on June 12, 2025.](http://www.sec.gov/Archives/edgar/data/2018846/000174177325002501/ex99acharter-1.htm)

4 [Form of Certificate of Amendment, to the Declaration of Trust – Establishment and Designation of Series for MFS Blended Research Core Equity ETF and MFS Blended Research International Equity ETF, previously filed as Exhibit (a) 4 of the Registrant's Post-Effective Amendment No. 3, filed on July 17, 2025.](http://www.sec.gov/Archives/edgar/data/2018846/000174177325002706/ex99acharter-1.htm)

5 [Certificate of Amendment, dated August 19, 2025, to the Declaration of Trust – Establishment and Designation of Series for MFS Blended Research Emerging Markets Equity ETF, previously filed as Exhibit (a) 5 of the Registrant's Post-Effective Amendment No. 5, filed on September 26, 2025.](http://www.sec.gov/Archives/edgar/data/2018846/000091293825000178/ex99acharter-1.htm)

6 [Certificate of Amendment, dated July 22, 2025, to the Declaration of Trust – Establishment and Designation of Series for MFS Blended Research Core Equity ETF and MFS Blended Research International Equity ETF, previously filed as Exhibit (a) 5 of the Registrant's Post-Effective Amendment No. 6, filed on September 29, 2025.](http://www.sec.gov/Archives/edgar/data/2018846/000091293825000180/ex99acharter-1.htm)

7 [Form of Certificate of Amendment, to the Declaration of Trust - Establishment and Designation of Series for MFS Active International Large Cap Value ETF and MFS Blended Research Small-Mid Cap ETF, previously filed as Exhibit (a) 7 of the Registrant's Post-Effective Amendment No. 8, filed on March 5, 2026.](http://www.sec.gov/Archives/edgar/data/2018846/000091293826000313/ex99acharter-1.htm)

8 [Certification of Amendment, to the Declaration of Trust, dated May 19, 2026 – Establishment and Designation of Series of MFS Active International Large Cap Value ETF and MFS Blended Research Small-Mid Cap ETF; filed herewith.](ex99acharter-1.htm)

------

9 [Certification of Amendment, to the Declaration of Trust, dated May 1, 2026 – Redesignation of Series of MFS Active International Large Cap Value ETF to MFS Active International Value ETF; filed herewith.](ex99acharter-2.htm)

(b) 1 [Master Amended and Restated By-Laws, dated January 1, 2002, as revised through September 25, 2024, previously filed as Exhibit (b) 1 of the Registrant's Pre-Effective Amendment No. 2, filed on September 26, 2024.](http://www.sec.gov/Archives/edgar/data/2018846/000174177324004066/ex99bbylaws-1.htm)

2 [Appendix A, as revised May 1, 2026, to the Master Amended and Restated By-Laws, dated January 1, 2002, as revised through September 25, 2024; filed herewith.](ex99bbylaws-1.htm)

(c) Copies of instruments defining the rights of shareholders, including the relevant portions: the Declaration of Trust, dated February 26, 2024 (see Section 6.2), as amended through July 15, 2025, previously filed as Exhibit (a) 1 of the Registrant's Initial Registration Statement on Form N-1A, filed on April 15, 2024, and the Master Amended and Restated By-Laws, dated January 1, 2002, as revised through September 25, 2024 (see Article III), previously filed as Exhibit (b) 1 of the Registrant's Pre-Effective Amendment No. 2, filed on September 26, 2024.

(d) 1 [Investment Management Agreement, dated September 6, 2024, between the Trust and Massachusetts Financial Services Company, on behalf of MFS Active Core Plus Bond ETF, MFS Active Growth ETF, MFS Active Intermediate Muni Bond ETF, MFS Active International ETF, and MFS Active Value ETF, previously filed as Exhibit (d) of the Registrant's Pre-Effective Amendment No. 2, filed on September 26, 2024.](http://www.sec.gov/Archives/edgar/data/2018846/000174177324004066/ex99dadvsrcontr-1.htm)

2 [Investment Management Agreement, dated August 25, 2025, between the Trust and Massachusetts Financial Services Company, on behalf of MFS Active Mid Cap ETF, previously filed as Exhibit (d) 2 of the Registrant's Post-Effective Amendment 4, filed on August 25, 2025.](http://www.sec.gov/Archives/edgar/data/2018846/000174177325003000/ex99dadvsrcontr-1.htm)

3 [Investment Management Agreement, dated September 30, 2025, between the Trust and Massachusetts Financial Services Company, on behalf of MFS Blended Research Core Equity ETF, MFS Blended Research Emerging Markets Equity ETF, and MFS Blended Research International Equity ETF, previously filed as Exhibit (d) 3 of the Registrant's Post-Effective Amendment No. 6, filed on September 29, 2025.](http://www.sec.gov/Archives/edgar/data/2018846/000091293825000180/ex99dadvsrcontr-1.htm)

4 [Form of Investment Management Agreement between the Trust and Massachusetts Financial Services Company, on behalf of MFS Active International Value ETF and MFS Blended Research Small-Mid Cap ETF Fund; filed herewith.](ex99dadvsrcontr-1.htm)

(e) 1 [Distribution Agreement, between the Trust and MFS Fund Distributors, Inc., dated as of September 6, 2024, previously filed as Exhibit (e) 1 of the Registrant's Pre-Effective Amendment No. 2, filed on September 26, 2024.](http://www.sec.gov/Archives/edgar/data/2018846/000174177324004066/ex99eundrcontr-1.htm)

2 [Form of Exhibit A to the Distribution Agreement between the Trust and MFS Fund Distributors, Inc., dated September 6, 2024; filed herewith.](ex99eundrcontr-1.htm)

3 [Form of Authorized Participant Agreement, previously filed as Exhibit (e) 2 of the Registrant's Pre-Effective Amendment No. 2, filed on September 26, 2024.](http://www.sec.gov/Archives/edgar/data/2018846/000174177324004066/ex99eundrcontr-2.htm)

(f) Not Applicable.

------

(g) 1 [Custodian Agreement between the Registrant and State Street Bank and Trust Company, dated December 18, 2006, previously filed as Exhibit 7(a) of MFS Series Trust XII (File Nos. 333-126328 and 811-21780) Post-Effective Amendment No. 7, filed on June 28, 2007.](http://www.sec.gov/Archives/edgar/data/1330967/000104746907005268/a2178548zex-99_b7a.txt)

2 [Appendix A, as of September 30, 2025, to the Custodian Agreement between the Trust and State Street Bank and Trust Company, dated December 18, 2006, previously filed as Exhibit (g) 2 of the Registrant's Post-Effective Amendment No. 6, filed on September 29, 2025.](http://www.sec.gov/Archives/edgar/data/2018846/000091293825000180/ex99gcustagreemt-1.htm)

3 [Appendix D, as of December 5, 2016, to the Custodian Agreement between the Registrant and State Street Bank and Trust Company, dated December 18, 2006, previously filed as Exhibit (g) 3 of MFS Series Trust I (File Nos. 33-07638 and 811-04777) Post-Effective Amendment No. 77, filed on December 28, 2016.](http://www.sec.gov/Archives/edgar/data/798244/000110465916163979/a16-22334_1ex99dg3.htm)

4 [Amendment 1, dated September 26, 2017, to the Custodian Agreement between the Registrant and State Street Bank and Trust Company, previously filed as Exhibit (g) 4 of MFS Series Trust XVI (File Nos. 2-36431 and 811-02032) Post-Effective Amendment No. 64, filed on October 26, 2017.](http://www.sec.gov/Archives/edgar/data/63067/000110465917063917/a17-18662_1ex99dg4.htm)

5 [Amendment 2, dated September 6, 2024, to the Custodian Agreement between the Trust and State Street Bank and Trust Company, previously filed as Exhibit (g) 5 of the Registrant's Pre-Effective Amendment No. 2, filed on September 26, 2024.](http://www.sec.gov/Archives/edgar/data/2018846/000174177324004066/ex99gcustagreemt-2.htm)

6 [Fund Accounting Agreement between the Registrant and State Street Bank and Trust Company, dated December 18, 2006, previously filed as Exhibit 7(b) of MFS Series Trust XII (File Nos. 333-126328 and 811-21780) Post-Effective Amendment No. 7, filed on June 28, 2007.](http://www.sec.gov/Archives/edgar/data/1330967/000104746907005268/a2178548zex-99_b7b.txt)

7 [Appendix A, as of September 30, 2025, to the Fund Accounting Agreement between the Registrant and State Street Bank and Trust Company, dated December 18, 2006, previously filed as Exhibit (g) 7 of the Registrant's Post-Effective Amendment No. 6, filed on September 29, 2025.](http://www.sec.gov/Archives/edgar/data/2018846/000091293825000180/ex99gcustagreemt-2.htm)

8 [Supplemental Agreement, by and among State Street Bank and Trust Company and the parties set forth in the agreement, including the Registrant, dated October 1, 2019, previously filed as Exhibit (g) 9 of MFS Series Trust I (File Nos. 33-07638 and 811-04777) Post-Effective Amendment No. 85, filed on December 26, 2019.](http://www.sec.gov/Archives/edgar/data/798244/000110465919075969/a19-20713_1ex99dg9.htm)

(h) 1 [Transfer Agency and Service Agreement between the Registrant and State Street Bank and Trust Company, dated September 6, 2024, previously filed as Exhibit (h) of the Registrant's Pre-Effective Amendment No. 2, filed on September 24, 2024.](http://www.sec.gov/Archives/edgar/data/2018846/000174177324004066/ex99hothmatcont-1.htm)

2 [Appendix A, as of May 19, 2026, to the Transfer Agency and Service Agreement between the Registrant and State Street Bank and Trust Company, dated as of September 6, 2024; filed herewith.](ex99hothmatcont-1.htm)

(i) [Legal Opinion and Consent of Counsel, dated May 18, 2026; filed herewith.](ex99ilegalopinin-1.htm)

(j) 1 [Power of Attorney, dated January 1, 2026 (Trustees); filed herewith.](ex99jotheropinin-1.htm)

2 [Power of Attorney, dated January 1, 2025 (DiLorenzo) (Phillips); filed herewith.](ex99jotheropinin-2.htm)

3 [Consent of Ernst & Young LLP, dated June 25, 2025, for MFS Active Core Plus Bond ETF, MFS Active Growth ETF, MFS Active International ETF, MFS Active Intermediate Muni Bond ETF, and MFS Active Value ETF, previously filed as Exhibit (j) 3 of the Registrant's Post-Effective Amendment No. 2, filed on June 26, 2025.](http://www.sec.gov/Archives/edgar/data/2018846/000174177325002554/ex99jotheropinin-3.htm)

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(k) Not Applicable.

(l) Not Applicable.

(m) 1 [Distribution Plan pursuant to Rule 12b-1 under the Investment Company Act of 1940, dated September 6, 2024, previously filed as Exhibit (m) of the Registrant's Pre-Effective Amendment No. 2, filed on September 26, 2024.](http://www.sec.gov/Archives/edgar/data/2018846/000174177324004066/ex99m12b1plan-1.htm)

2 [Schedule A, dated May 26, 2026, to the Distribution Plan pursuant to Rule 12b-1 under the Investment Company Act of 1940, effective September 6, 2024; filed herewith.](ex99m12b1plan-1.htm)

(n) Not Applicable.

(o) Reserved.

(p) [MFS Code of Ethics, March 31, 2026, filed as Exhibit (p) of MFS Variable Insurance Trust (File Nos. 33-74668 and 811-8326) Post Effective Amendment No. 57, filed on April 29, 2026.](http://www.sec.gov/Archives/edgar/data/918571/000091293826000452/ex99pcodeeth-1.htm)

**Item 29. <u>Persons Controlled by or under Common Control with</u> <u>the Registrant</u>**

The Registrant does not control or have common control over any persons.

**Item 30. <u>Indemnification</u>**

The Registrant's organizational documents contain provisions indemnifying Trustees and officers against liability incurred in their official capacities. Subject to certain exceptions and limitations, Article V of the Registrant's Amended and Restated Declaration of Trust provides that every person who is or has been a Trustee, Advisory Trustee or officer of the Trust shall be indemnified by the Trust against all liability and against all expenses reasonably incurred or paid by him or her in connection with any claim, action, suit or proceeding in which that individual becomes involved as a party or otherwise by virtue of being or having been a Trustee, Advisory Trustee or officer and against amounts paid or incurred by that individual in the settlement thereof.

The Trustees and Officers of the Registrant and the personnel of the Registrant's investment adviser and principal underwriter are insured under an errors and omissions liability insurance policy. The Registrant and its officers are also insured under the fidelity bond required by Rule 17g-1 under the Investment Company Act of 1940, as amended.

The Trust has also agreed to contractually provide each Trustee with assurance that indemnification will be available. The agreement between the Trust and each Trustee, in addition to delineating certain procedural aspects relating to indemnification and advancement of expenses, provides that each of the Funds severally shall indemnify and hold harmless the Trustee against any and all expenses as defined therein actually incurred or paid by the Trustee in any proceeding as defined therein in connection with the Trustee's service to the relevant Fund, unless (i) the Trustee did not act in good faith in the reasonable belief that his or her action was in the best interests of the Fund or (ii) the Trustee is liable to the Fund or its shareholders by reason of the Trustee's disabling conduct, and there has been a final adjudication on the merits in a relevant proceeding that the Trustee's conduct fell within (i) or (ii).

Insofar as indemnification for liability arising under the Securities Act of 1933 may be permitted to trustees, officers and controlling persons of the Registrant pursuant to the foregoing provisions, or otherwise, the Registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in such Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or paid by a trustee, officer or controlling person of the Registrant in the successful defense of any action, suit or proceeding) is asserted by such trustee, officer or controlling person in connection with the securities being registered hereby, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent,

------

submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in such Act and will be governed by the final adjudication of such issue.

**Item 31. <u>Business and Other Connections of Investment Adviser</u>**

Business backgrounds of the officers and directors of Massachusetts Financial Services Company, the Registrant's investment adviser (the "Investment Adviser" or "MFS"), that also hold positions with the Registrant are included under "Trustees and Officers" in the Statement(s) of Additional Information included in this Registration Statement. Certain officers and directors of the Investment Adviser serve as officers or directors of some or all of the Investment Adviser's corporate affiliates and certain officers of the Investment Adviser serve as officers of some or all of the MFS funds and/or officers or directors of certain MFS investment products.

The principal executive officer and certain directors of the Investment Advisor not included under "Trustees and Officers" in the Statement(s) of Additional Information included in this Registration Statement are listed below:

---

| | |
|:---|:---|
| **Name and Current Position with the Investment Adviser** | **Business, profession, vocation or employment** |
| <br>Edward Maloney<br>Director and Chief Executive Officer, MFS | <br>Director, MFS<br>President, MFS<br>Chief Executive Officer, MFS |
| Thomas Murphy<br>Director, MFS | Executive Vice President, Sun Life Financial, Inc. <br>Chief Financial Officer, Sun Life Financial, Inc. |
| Melissa J. Kennedy<br>Director, MFS | Executive Vice President, Sun Life Financial, Inc. <br>Chief Legal and Public Policy Officer, Sun Life Financial, Inc. |
| Kevin D. Strain<br>Director, MFS | President, Sun Life Financial, Inc. <br>Chief Executive Officer, Sun Life Financial, Inc.  |

---

The principal executive officer and the directors of MFS have been engaged during the past two fiscal years in no business profession, vocation or employment of a substantial nature other than as a principal executive officer and director of the Investment Adviser and certain Investment Adviser's corporate affiliates.

The identity of those corporate affiliates is identified below.

---

| | |
|:---|:---|
| **Investment Adviser Corporate Affiliate** | **Address** |
| MFS Institutional Advisors, Inc. | 111 Huntington Avenue<br>Boston, Massachusetts 02199 U.S.A. |
| MFS Service Center, Inc. | 111 Huntington Avenue<br>Boston, Massachusetts 02199 U.S.A. |
| MFS International Australia Pty Ltd. | Level 15, 20 Martin Place<br>Sydney, NSW 2000, Australia |
| MFS do Brasil Desenvolvimento de Mercado Ltda. (Brazil) | Rua Joaquim Floriano, 1.052 – 11<sup>o</sup> Andar,<br>conjunto 111, Itaim Bibi,<br>São Paulo, SP, Brazil 04534-004 |

---

------

---

| | |
|:---|:---|
| **Investment Adviser Corporate Affiliate** | **Address** |
| MFS International Singapore Pte. Ltd. | 250 North Bridge Road,

#08-01/04 Raffles City Tower<br>Singapore 179101 |
| MFS Investment Management Company (Lux.) S.à.r.l. | 4 Rue Albert Borschette<br>L-1246 Luxembourg, Grand Duchy of Luxembourg |
| MFS Investment Management K.K. | 16 F Daido Seimei Kasumigaseki Building<br>1-4-2 Kasumigaseki 1-chome, Chiyoda-ku, Tokyo, Japan 100-0013 |
| Sun Life of Canada (U.S.) Financial Services Holdings, Inc. | 111 Huntington Avenue<br>Boston, Massachusetts 02199 U.S.A. |
| 3060097 Nova Scotia Company (NSULC) | Nova Centre – South Tower, Suite 1500 <br>1625 Grafton Street, Halifax, <br>Nova Scotia, Canada B3J 0E8 |
| MFS Investment Management Canada Limited (MFS Canada) | 77 King Street West, 35<sup>th</sup> Floor<br>Toronto, Ontario, Canada M5K 1B7 |
| MFS Heritage Trust Company | 111 Huntington Avenue <br>Boston, Massachusetts 02199 U.S.A. |
| Sun Life Financial Inc. | 1 York Street <br>Toronto, Ontario, M5J 0B6, Canada |
| MFS Fund Distributors, Inc. | 111 Huntington Avenue<br>Boston, Massachusetts 02199 U.S.A. |

---

The MFS Funds include the following. The address of the MFS Funds is: 111 Huntington Ave., Boston, MA 02199.

Massachusetts Investors Trust

Massachusetts Investors Growth Stock Fund

MFS Series Trust I

MFS Series Trust II

MFS Series Trust III

MFS Series Trust IV

MFS Series Trust V

MFS Series Trust VI

MFS Series Trust VII

MFS Series Trust VIII

MFS Series Trust IX

MFS Series Trust X

MFS Series Trust XI

MFS Series Trust XII

MFS Series Trust XIII

MFS Series Trust XIV

MFS Series Trust XV

MFS Series Trust XVI

MFS Series Trust XVII

MFS Active Exchange Traded Funds Trust

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MFS Municipal Series Trust

MFS Variable Insurance Trust

MFS Variable Insurance Trust II

MFS Variable Insurance Trust III

MFS Charter Income Trust

MFS Government Markets Income Trust

MFS High Income Municipal Trust

MFS High Yield Municipal Trust

MFS Intermediate High Income Fund

MFS Intermediate Income Trust

MFS Investment Grade Municipal Trust

MFS Municipal Income Trust

MFS Multimarket Income Trust

**Item 32. <u>Principal Underwriters</u>**

(a) MFS Fund Distributors, Inc. (the "Distributor") acts as principal underwriter of the following investment companies:

Massachusetts Investors Trust

Massachusetts Investors Growth Stock Fund

MFS Series Trust I

MFS Series Trust II

MFS Series Trust III

MFS Series Trust IV

MFS Series Trust V

MFS Series Trust VI

MFS Series Trust VII

MFS Series Trust VIII

MFS Series Trust IX

MFS Series Trust X

MFS Series Trust XI

MFS Series Trust XII

MFS Series Trust XIII

MFS Series Trust XV

MFS Series Trust XVI

MFS Series Trust XVII

MFS Active Exchange Traded Funds Trust

MFS Municipal Series Trust

MFS Variable Insurance Trust

MFS Variable Insurance Trust II

MFS Variable Insurance Trust III

(b) Directors and officers of the Distributor are described below:

---

| | | |
|:---|:---|:---|
| **Name** | **Title with the Distributor** | **Positions with the Registrant** |

---

------

---

| | | |
|:---|:---|:---|
| Michael S. Keenan | Director and President | None |
| Sean M. Kenney | Director and Chairman of the Board | None |
| Heidi W. Hardin | Secretary | Secretary and Clerk |
| Joseph J. Smelstor | Treasurer and Senior Group Controller | None |
| Michael Hunt | Chief Compliance Officer | None |
| Christopher R. Bohane | Assistant Secretary | Assistant Secretary and Assistant Clerk |
| Jay C. Herold | Assistant Secretary | None |
| Jessica Howell | Assistant Secretary | None |
| Amanda Mooradian | Assistant Secretary | Assistant Secretary and Assistant Clerk |
| Joseph A. Zelic | Tax Officer | None |

---

The principal business address of each of these persons is 111 Huntington Ave., Boston, MA 02199.

(c) Not applicable.

#### Item 33. Location of Accounts and Records
The accounts and records of the Registrant are located, in whole or in part, at the office of the Registrant and the following locations:

---

| | |
|:---|:---|
| **NAME** | **ADDRESS** |
| Massachusetts Financial Services Company (investment adviser) | 111 Huntington Avenue<br>Boston, MA 02199 |
| MFS Fund Distributors, Inc. (principal underwriter) | 111 Huntington Avenue<br>Boston, MA 02199 |
| State Street Bank & Trust Company<br>(custodian) | State Street Financial Center<br>One Congress Street, Suite 1<br>Boston, MA 02114-2016 |
| JPMorgan Chase Bank N.A. (custodian) | 270 Park Avenue<br>New York, NY 10017 |
| MFS Service Center, Inc. (transfer agent) | 111 Huntington Avenue<br>Boston, MA 02199 |
| Ropes & Gray (counsel) | Prudential Tower<br>800 Boylston Street<br>Boston, MA 02199-3600 |
| Iron Mountain, Inc. (storage vendor) | Suite 150, 85 New Hampshire Avenue<br>Portsmouth, NH 03801 |
| Institutional Shareholder Services, Inc. (proxy voting administrator) | 702 King Farm Boulevard<br>Suite 400<br>Rockville, MD 20850-4045 |

---

------

---

| | |
|:---|:---|
| **NAME** | **ADDRESS** |
| UBS Asset Management (Americas) Inc., (former subadviser) | 1285 Avenue of the Americas<br>New York, NY 10019 |
| Sun Capital Advisers LLC (former investment adviser) | 1 Sun Life Park<br>Wellesley Hills, MA 02481 |
| Global Relay Communications, Inc. (electronic communications storage vendor) | 220 Cambie Street, 2<sup>nd</sup> Floor<br>Vancouver, BC V6B 2M9 |
| The Depository Trust Company (DTC) | 55 Water Street<br>New York, NY 10041 |
| SS&C Technologies (technology vendor) | 80 Lamberton Rd<br>Windsor, CT 06095 |
| TerraNua U.S. Corp d.b.a. My Compliance Office (personal trading system) | 535 5th Avenue, 4th Floor<br>New York, NY 10017 |
| Charles River Development (investment related records) | 700 District Avenue<br>Burlington, MA 01803 |
| Icertis (contract management system) | 14711 NE 29th Place, Suite 100<br>Bellevue, WA 98007 |

---

#### Item 34. Management Services
None.

#### Item 35. Undertakings
None.

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#### NOTICE
Notice is hereby given that this Registration Statement has been executed on behalf of the Registrant by an officer of the Registrant as an officer and not individually, and the obligations of or arising out of this Registration Statement are not binding upon any of the Trustees, officers, or shareholders of the Registrant individually, but are binding only upon the assets and property of the Registrant.

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#### SIGNATURES
Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant certifies that it meets all of the requirements for effectiveness of this Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933 and has duly caused this Post-Effective Amendment to the Registration Statement to be signed on its behalf by the undersigned, thereto duly authorized, in the City of Boston and The Commonwealth of Massachusetts on May 18, 2026.

#### MFS <sup>®</sup> ACTIVE EXCHANGE TRADED FUNDS TRUST
By: <u>/s/DAVID L. DILORENZO\*</u>

Name: David L. DiLorenzo

Title: President

Pursuant to the requirements of the Securities Act of 1933, this Post-Effective Amendment to its Registration Statement has been signed below by the following persons in the capacities indicated on May 18, 2026.

**<u>SIGNATURE</u> <u>TITLE</u>**

<u>/s/DAVID L. DILORENZO\*</u> President (Principal Executive Officer)

David L. DiLorenzo

<u>/s/</u><u>KASEY L. PHILLIPS</u><u>\*</u> Principal Financial and Accounting Officer

Kasey L. Phillips

<u>/s/STEVEN E. BULLER\*</u> Trustee

Steven E. Buller

<u>/s/JOHN A. CAROSELLI\*</u> Trustee

John A. Caroselli

<u>/s/MAUREEN R. GOLDFARB\*</u> Trustee

Maureen R. Goldfarb

<u>/s/PETER D. JONES\*</u> Trustee

Peter D. Jones

<u>/s/JOHN P. KAVANAUGH\*</u> Trustee

John P. Kavanaugh

<u>/s/JAMES W. KILMAN, JR.\*</u> Trustee

James W. Kilman, Jr.

<u>/s/CLARENCE OTIS, JR.\*</u> Trustee

Clarence Otis, Jr.

<u>/s/MICHAEL W. ROBERGE\*</u> Trustee

------

Michael W. Roberge

<u>/s/MARYANNE L. ROEPKE\*</u> Trustee

Maryanne L. Roepke

<u>/s/PAULA E. SMITH\*</u> Trustee

Paula E. Smith

<u>/s/DARRELL A. WILLIAMS\*</u> Trustee

Darrell A. Williams

\*By: <u>/s/CHRISTOPHER R. BOHANE</u>

Name: Christopher R. Bohane

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;as Attorney-in-fact

Executed by Christopher R. Bohane on behalf of those indicated pursuant to a Power of Attorney, dated January 1, 2026 (Trustees) and a Power of Attorney, dated January 1, 2025 (DiLorenzo) (Phillips); filed herewith.

------

#### INDEX TO EXHIBITS

#### EXHIBIT NO. DESCRIPTION OF EXHIBIT
(a) 8 9 [Certification of Amendment, to the Declaration of Trust, dated May 19, 2026 – Establishment and Designation of Series of MFS Active International Large Cap Value ETF and MFS Blended Research Small-Mid Cap ETF.](ex99acharter-1.htm) [<br> Certification of Amendment to the Declaration of Trust, dated May 1, 2026 – Redesignation of Series of MFS Active International Large Cap Value ETF to MFS Active International Value ETF.](ex99acharter-2.htm)

(b) 2 [Appendix A, as revised](ex99bbylaws-1.htm) [May 1](ex99bbylaws-1.htm) [, 2026, to the Master Amended and Restated By-Laws, dated January 1, 2002, as revised through September 25, 2024.](ex99bbylaws-1.htm)

(d) 4 [Form of Investment Management Agreement between the Trust and Massachusetts Financial Services Company, on behalf of MFS Active International Value ETF and MFS Blended Research Small-Mid Cap ETF Fund.](ex99dadvsrcontr-1.htm)

(e) 2 [Form of Exhibit A to the Distribution Agreement between the Trust and MFS Fund Distributors, Inc., dated September 6, 2024.](ex99eundrcontr-1.htm)

(h) 2 [Appendix A, as of May 19, 2026, to the Transfer Agency and Service Agreement between the Registrant and State Street Bank and Trust Company, dated as of September 6, 2024.](ex99hothmatcont-1.htm)

(i) [Legal Opinion and Consent of Counsel, dated May 18, 2026.](ex99ilegalopinin-1.htm)

(j) 1 2 [Power of Attorney, dated January 1, 2026 (Trustees).](ex99jotheropinin-1.htm) [Power of Attorney, dated January 1, 2025 (DiLorenzo) (Phillips).](ex99jotheropinin-2.htm)

(m) 2 [Schedule A, dated May 26, 2026, to the Distribution Plan pursuant to Rule 12b-1 under the Investment Company Act of 1940, effective September 6, 2024.](ex99m12b1plan-1.htm)

<br> 101.INS XBRL Instance Document – the instance document does not appear on the Interactive

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| | |
|:---|:---|
| | Data File because its XBRL tags are embedded within the Inline XBRL document |
| 101.SCH | XBRL Taxonomy Extension Schema Document |
| 101.CAL | XBRL Taxonomy Extension Calculation Linkbase Document |
| 101.DEF | XBRL Taxonomy Extension Definition Linkbase Document |
| 101.LAB | XBRL Taxonomy Extension Label Linkbase Document |
| 101.PRE | XBRL Taxonomy Extension Presentation Linkbase Document |

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## Ex-99.A

#### EXHIBIT NO. 99.(a) 8

#### <br> MFS ACTIVE EXCHANGE TRADED FUNDS TRUST

#### CERTIFICATION OF AMENDMENT

#### TO THE DECLARATION OF TRUST

#### ESTABLISHMENT AND DESIGNATION

#### OF SERIES
Pursuant to Section 6.9 of the Amended and Restated Declaration of Trust dated March 6, 2024, as amended (the "Declaration"), of MFS Active Exchange Traded Funds Trust, a business trust organized under the laws of The Commonwealth of Massachusetts (the "Trust"), the undersigned Trustees of the Trust, being a majority of the Trustees of the Trust, hereby establish and designate two new series of Shares (as defined in the Declaration), such series to have the following special and relative rights:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. The two new series shall be designated MFS Active International Large Cap Value ETF and MFS Blended Research Small-Mid Cap ETF.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. Each series shall be authorized to invest in cash, securities, instruments and other property as from time to time described in the Trust's then currently effective registration statement under the Securities Act of 1933, as amended, to the extent pertaining to the offering of Shares of such series. Each Share of each series shall be redeemable, shall be entitled to one vote or fraction thereof in respect of a fractional share on matters on which Shares of the series shall be entitled to vote, shall represent a pro rata beneficial interest in the assets allocated or belonging to the series, and shall be entitled to receive its pro rata share of the net assets of the series upon liquidation of the series, all as provided in Section 6.9 of the Declaration.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3. Shareholders of each series shall vote separately as a class on any matter to the extent required by, and any matter shall be deemed to have been effectively acted upon with respect to each series as provided in Rule 18f-2, as from time to time in effect, under the 1940 Act, as amended, or any successor rule, and by the Declaration.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4. The assets and liabilities of the Trust shall be allocated among the previously established and existing series of the Trust and such new series as set forth in Section 6.9 of the Declaration.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5. Subject to the provisions of Section 6.9 and Article IX of the Declaration, the Trustees (including any successor Trustees) shall have the right at any time and from time to time to reallocate assets and expenses or to change the designation of any series now or hereafter created, or to otherwise change the special and relative rights of any such establishment and designation of series of Shares.

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IN WITNESS WHEREOF, a majority of the Trustees of the Trust have executed this amendment, in one or more counterparts, all constituting a single instrument, as an instrument under seal in The Commonwealth of Massachusetts, as of May 19, 2026, and further certify, as provided by the provisions of Section 9.3(c) of the Declaration, that this amendment was duly adopted by the undersigned in accordance with Section 9.3(a) of the Declaration.

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| | |
|:---|:---|
| <u><u>/s/STEVEN E. BULLER</u></u> <br>Steven E. Buller<br>c/o MFS Investment Management<br>111 Huntington Avenue<br>Boston, MA 02199 | <u><u>/s/CLARENCE OTIS, JR.</u></u> <br>Clarence Otis, Jr.<br>c/o MFS Investment Management<br>111 Huntington Avenue<br>Boston, MA 02199 |
| <u><u>/s/JOHN A. CAROSELLI</u></u> <br>John A. Caroselli<br>c/o MFS Investment Management<br>111 Huntington Avenue<br>Boston, MA 02199 | <u><u>/s/MICHAEL W. ROBERGE</u></u> <br>Michael W. Roberge<br>c/o MFS Investment Management<br>111 Huntington Avenue<br>Boston, MA 02199 |
| <u><u>/s/MAUREEN R. GOLDFARB</u></u> <br>Maureen R. Goldfarb<br>c/o MFS Investment Management<br>111 Huntington Avenue <br>Boston, MA 02199 | <u><u>/s/MARYANNE L. ROEPKE</u></u> <br>Maryanne L. Roepke<br>c/o MFS Investment Management<br>111 Huntington Avenue<br>Boston, MA 02199 |
| <u><u>/s/PETER D. JONES</u></u> <br>Peter D. Jones<br>c/o MFS Investment Management<br>111 Huntington Avenue <br>Boston, MA 02199 | <u><u>/s/PAULA E. SMITH</u></u> <br>Paula E. Smith<br>c/o MFS Investment Management<br>111 Huntington Avenue<br>Boston, MA 02199 |
| <u><u>/s/JOHN P. KAVANAUGH</u></u> <br>John P. Kavanaugh<br>c/o MFS Investment Management<br>111 Huntington Avenue<br>Boston, MA 02199 | <u><u>/s/DARRELL A. WILLIAMS</u></u> <br>Darrell A. Williams<br>c/o MFS Investment Management<br>111 Huntington Avenue<br>Boston, MA 02199 |
| <u><u>/s/JAMES W. KILMAN, JR.</u></u> <br>James W. Kilman, Jr.<br>c/o MFS Investment Management<br>111 Huntington Avenue<br>Boston, MA 02199 |  |

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## Ex-99.A

#### EXHIBIT NO. 99.(a) 9

#### MFS ACTIVE EXCHANGE TRADED FUNDS TRUST

#### CERTIFICATION OF AMENDMENT

#### TO THE DECLARATION OF TRUST

#### REDESIGNATION OF SERIES
Pursuant to Sections 6.11 and 9.3(a) of the Amended and Restated Declaration of Trust dated March 6, 2024, as amended (the "Declaration"), of MFS Active Exchange Traded Funds Trust, a business trust organized under the laws of The Commonwealth of Massachusetts (the "Trust"), the undersigned, constituting a majority of the Trustees of the Trust, hereby redesignate an existing series of Shares (as defined in the Declaration) as follows:

The series designated as MFS Active International Large Cap Value ETF shall be redesignated as MFS Active International Value ETF.

Pursuant to Section 10.1 of the Declaration, this redesignation of series of Shares shall be effective on or about May 1, 2026.

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IN WITNESS WHEREOF, a majority of the Trustees of the Trust have executed this amendment, in one or more counterparts, all constituting a single instrument, as an instrument under seal in The Commonwealth of Massachusetts, as of May 1, 2026, and further certify, as provided by the provisions of Section 9.3(c) of the Declaration, that this amendment was duly adopted by the undersigned in accordance with Section 9.3(a) of the Declaration.

---

| | |
|:---|:---|
| <u><u>/s/STEVEN E. BULLER</u></u> <br>Steven E. Buller<br>c/o MFS Investment Management<br>111 Huntington Avenue<br>Boston, MA 02199 | <u><u>/s/CLARENCE OTIS, JR.</u></u> <br>Clarence Otis, Jr.<br>MFS Investment Management<br>111 Huntington Avenue<br>Boston, MA 02199 |
| <u><u>/s/JOHN A. CAROSELLI</u></u> <br>John A. Caroselli<br>c/o MFS Investment Management<br>111 Huntington Avenue<br>Boston, MA 02199 | <u><u>/s/MICHAEL W. ROBERGE</u></u> <br>Michael W. Roberge<br>c/o MFS Investment Management<br>111 Huntington Avenue<br>Boston, MA 02199 |
| <u><u>/s/MAUREEN R. GOLDFARB</u></u> <br>Maureen R. Goldfarb<br>c/o MFS Investment Management<br>111 Huntington Avenue <br>Boston, MA 02199 | <u><u>/s/MARYANNE L. ROEPKE</u></u> <br>Maryanne L. Roepke<br>MFS Investment Management<br>111 Huntington Avenue<br>Boston, MA 02199 |
| <u><u>/s/PETER D. JONES</u></u> <br>Peter D. Jones<br>c/o MFS Investment Management<br>111 Huntington Avenue <br>Boston, MA 02199 | <u><u>/s/PAULA E. SMITH</u></u> <br>Paula E. Smith<br>MFS Investment Management<br>111 Huntington Avenue<br>Boston, MA 02199 |
| <u><u>/s/JOHN P. KAVANAUGH</u></u> <br>John P. Kavanaugh<br>c/o MFS Investment Management<br>111 Huntington Avenue<br>Boston, MA 02199 | <u><u>/s/DARRELL A. WILLIAMS</u></u> <br>Darrell A. Williams<br>c/o MFS Investment Management<br>111 Huntington Avenue<br>Boston, MA 02199 |
| <u><u>/s/JAMES W. KILMAN, JR.</u></u> <br>James W. Kilman, Jr.<br>c/o MFS Investment Management<br>111 Huntington Avenue<br>Boston, MA 02199 |  |

---

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## Ex-99.B

#### EXHIBIT NO. 99.(b) 2

#### MASTER

#### AMENDED AND RESTATED

#### BY-LAWS

#### OF

#### THE TRUSTS IDENTIFIED ON APPENDIX A HERETO

#### January 1, 2002, as revised:
June 23, 2004 (Article VI: Section 1)

August 22, 2007 (Article XII: Section 1)

November 1, 2014 (Article VI: Sections 1, 2, 3, 13 and 14)

May 2, 2016 (Article XIV: Sections 1 and 2)

July 19, 2019 (Article VI, Section 3)

September 25, 2024 (Article XIV, Section 2)

#### Appendix A, as revised:
June 28, 2005 (Addition of MFS Series Trust XII)

February 21, 2006 (Redesignation of MGS to MFS Series Trust XIII)

February 27, 2007 (Addition of MFS Series Trust XIV)

July 24, 2007 (Redesignation of MFS Government Limited Maturity Fund to

MFS Series Trust XV)

December 18, 2007 (Removal of MFS Closed End Funds)

July 31, 2009 (Termination of FRH, NEF, and SVF)

February 23, 2010 (Addition of MFS Global Bond Fund)

June 22, 2010 (Addition of MFS Asia Ex-Japan Fund, MFS European Equity Fund, MFS Latin American Equity Fund, and MFS Lifetime 2050 Fund)

October 26, 2010 (MFS Commodity Strategy Fund Fiscal Year End)

December 14, 2010 (Addition of MFS Absolute Return Fund and MFS Global Tactical Allocation Fund)

February 15, 2011 (Redesignation of MFS Global Tactical Allocation Fund as MFS Global Multi-Asset Fund)

April 14, 2011 (Termination of MFS Research Bond Fund J)

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June 21, 2011(Addition of MFS Emerging Markets Debt Local Currency Fund)

January 1, 2012 (Redesignation of MFS Sector Rotational Fund as MFS Equity Opportunities Fund)

June 19, 2012 (Addition of MFS Equity Income Fund, MFS High Yield Pooled Portfolio, MFS Lifetime 2015 Fund, MFS Lifetime 2025 Fund, MFS Lifetime 2035 Fund, MFS Lifetime 2045 Fund, and MFS Lifetime 2055 Fund)

February 1, 2014 (Redesignation of MFS Diversified Target Return Fund as MFS Global Alternative Strategy Fund and Removal of MFS Fundamental 130/30 Fund)

April 8, 2014 (Addition of MFS Managed Wealth Fund)

June 10, 2014 (MFS Commodity Strategy Fund Fiscal Year End)

June 20, 2014 (Reorganization of MFS Lifetime 2010 Fund into MFS Lifetime Retirement Income Fund)

August 28, 2014 (Redesignation of MFS Lifetime Retirement Income Fund as MFS Lifetime Income Fund)

September 9, 2014 (Fiscal Year Ends for MFS Emerging Markets Debt Local Currency Fund and MFS Global Bond Fund)

March 1, 2015 (Fiscal Year End for MFS Global Real Estate Fund)

March 31, 2015 (Redesignation of MFS Research Bond Fund as MFS Total Return Bond Fund)

April 30, 2015 (Redesignation of MFS Bond Fund as MFS Corporate Bond Fund)

June 9, 2015 (Addition of MFS Blended Research Emerging Markets Equity Fund, MFS Blended Research Global Equity Fund, MFS Blended Research International Equity Fund, MFS Blended Research Growth Equity Fund, MFS Blended Research Small Cap Equity Fund, and MFS Blended Research Value Equity Fund)

May 2, 2016 (Addition of MFS Blended Research Mid Cap Equity Fund)

July 22, 2016 (Addition of MFS Lifetime 2060 Fund)

August 5, 2016 (Reorganization of MFS Lifetime 2015 Fund into MFS Lifetime Income Fund)

October 19, 2017 (Addition of MFS Prudent Investor Fund)

March 29, 2018 (Termination of MFS Absolute Return Fund and MFS Global Multi-Asset Fund)

July 19, 2019 (Corresponding By-Law restatement and June 1, 2019 redesignation of MFS International Value Fund as MFS International Intrinsic Value Fund)

October 25, 2019 (Termination of MFS Equity Opportunities Fund)

April 7, 2020 (Addition of MFS International Large Cap Value Fund)

August 21, 2020 (Termination of MFS Blended Research Global Equity Fund)

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September 30, 2020 (Addition of MFS Emerging Markets Equity Research Fund)

February 12, 2021 (Addition of MFS Municipal Intermediate Fund)

April 30, 2021 (Redesignation of MFS Global Bond Fund as MFS Global Opportunistic Bond Fund)

June 9, 2021 (Addition of MFS Lifetime 2065 Fund)

September 29, 2021 (Addition of MFS Intrinsic Value Fund)

October 1, 2021 (Termination of MFS Tennessee Municipal Bond Fund)

March 9, 2022 (Addition of MFS Core Bond Fund)

August 5, 2022 (Termination of MFS Lifetime 2020 Fund)

October 24, 2022 (Redesignation of MFS Institutional Trust to MFS Series Trust XVII)

March 6, 2024 (Addition of MFS Active Exchange Traded Funds Trust)

August 25, 2025 (Addition of MFS Active Mid Cap ETF)

September 30, 2025 (Addition of MFS Blended Research Core Equity ETF, MFS Blended Research International Equity ETF, and MFS Blended Research Emerging Markets Equity ETF)

April 29, 2026 (Addition of MFS Active International Large Cap Value ETF,

MFS Blended Research Small-Mid Cap ETF, and MFS Lifetime 2070 Fund)

April 30, 2026 (Redesignation of MFS Intrinsic Value Fund as MFS Intrinsic Equity Fund and

MFS International Intrinsic Value Fund as MFS International Intrinsic Equity Fund)

May 1, 2026 (Redesignation of MFS Active International Large Cap Value ETF as

MFS Active International Value ETF)

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#### AMENDED AND RESTATED

#### BY-LAWS

#### OF

#### THE TRUSTS IDENTIFIED ON APPENDIX A HERETO

#### ARTICLE I

#### DEFINITIONS
The terms "Commission", "Declaration", "Distributor", "Interested Person", "Investment Adviser", "Majority Shareholder Vote", "1940 Act", "Shareholder", "Shares", "Transfer Agent", "Trust", "Trust Property" and "Trustees" have the respective meanings given them in the Declaration of Trust or Amended and Restated Declaration of Trust, as applicable, of the Trusts identified on Appendix A hereto. References to a "Trust" mean each Trust severally and not jointly. These By-Laws shall be subject to the Declaration for all purposes.

#### ARTICLE II

#### OFFICES
**<u>SECTION 1.</u> <u>PRINCIPAL OFFICE.</u>** Until changed by the Trustees, the principal office of the Trust in The Commonwealth of Massachusetts shall be in the City of Boston, County of Suffolk.

**<u>SECTION 2. O</u><u>THER OFFICES.</u>** The Trust may have offices in such other places without as well as within The Commonwealth of Massachusetts as the Trustees may from time to time determine.

#### ARTICLE III

#### SHAREHOLDERS
**<u>SECTION 1.</u> <u>MEETINGS.</u>** Meetings of the Shareholders may be called at any time by a majority of the Trustees. Meetings of the Shareholders for the purpose of considering the removal of a person serving as Trustee shall be called by the Trustees if they are requested in writing to do so by Shareholders holding in the aggregate Shares representing not less than ten percent (10%) of the voting power of the outstanding Shares of the Trust having voting rights. Any such meeting shall be held within or without The Commonwealth of Massachusetts on such day and at such time as the Trustees shall designate.

**<u>SECTION 2. NOTICE OF MEETINGS.</u>** Notice of all meetings of Shareholders, stating the time, place and purposes of the meeting, shall be given by the Trustees in accordance with the Declaration, mailed or sent at least (ten) 10 days and not more than ninety (90) days before the meeting. Only the business stated in the notice of the meeting shall be considered at such meeting. Any adjourned meeting may be held as adjourned without further notice, even if the date of such adjourned meeting is more than 90 days after the notice of the meeting was mailed or sent. Notwithstanding the foregoing, if either the President or Clerk of the Trust, or in the absence or unavailability of the President and the Clerk, any officer of the Trust, determines that as a result of force majeure or

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an act of God or war, the date, time or place designated for a meeting or adjourned meeting of Shareholders is not reasonably practicable or available, such officer may, without further notice to Shareholders, designate such other date, time or place for such meeting or adjourned meeting as such officer shall, in his or her sole discretion, determine. No notice need be given to any Shareholder who shall have failed to inform the Trust of his current address or if a written waiver of notice, executed before or after the meeting by the Shareholder or his attorney thereunto authorized, is filed with the records of the meeting.

**<u>SECTION 3. RECORD DATE FOR MEETINGS.</u>** For the purpose of determining the Shareholders who are entitled to notice of and to vote at any meeting, or to participate in any distribution, or for the purpose of any other action, the Trustees may from time to time close the transfer books for such period, not exceeding thirty (30) days, as the Trustees may determine; or without closing the transfer books the Trustees may fix a date not more than ninety (90) days prior to the date of any meeting of Shareholders or distribution or other action as a record date for the determination of the persons to be treated as Shareholders of record for such purpose. The Trustees also may select the time of day as of which the calculations for determining how many votes each Shareholder is entitled to pursuant to the Declaration shall be performed.

**<u>SECTION 4. PROXIES.</u>** At any meeting of Shareholders, any holder of Shares entitled to vote thereat may vote by proxy, provided that no proxy shall be voted at any meeting unless it shall have been placed on file with the Clerk, or with such other officer or agent of the Trust as the Clerk may direct, for verification prior to the time at which such vote shall be taken. Pursuant to a vote of a majority of the Trustees, proxies may be solicited in the name of one or more Trustees or one or more of the officers of the Trust. When any Share is held jointly by several persons, any one of them may vote at any meeting in person or by proxy in respect of such Share (and a proxy shall be valid if executed by any one of them), but if more than one of them shall be present at such meeting in person or by proxy, and such joint owners or their proxies so present disagree as to any vote to be cast, such vote shall not be received in respect of such Share. A proxy purporting to be executed by or on behalf of a Shareholder shall be deemed valid unless challenged at or prior to its exercise, and the burden of proving invalidity shall rest on the challenger. The placing of a Shareholder's name on a proxy pursuant to telephonic or electronically transmitted instructions obtained pursuant to procedures reasonably designed to verify that such instructions have been authorized by such Shareholder shall constitute execution of such proxy by or on behalf of such Shareholder. If the holder of any such Share is a minor or a person of unsound mind, and subject to guardianship or to the legal control of any other person as regards the charge or management of such Share, he may vote by his guardian or such other person appointed or having such control, and such vote may be given in person or by proxy. Any copy, facsimile telecommunication or other reliable reproduction of a proxy may be substituted for or used in lieu of the original proxy for any and all purposes for which the original proxy could be used, provided that such copy, facsimile telecommunication or other reproduction shall be a complete reproduction of the entire original proxy or the portion thereof to be returned by the Shareholder.

**<u>SECTION 5. QUORUM AND ADJOURNMENT.</u>** Except when a larger quorum is required by any provision of law, Shares representing a majority of the voting power of the outstanding Shares entitled to vote shall constitute a quorum at any meeting of Shareholders, except that where any provision of law, the Declaration or these By-laws requires that holders of any series or class shall vote as a series or class, then Shares representing a majority (unless a larger quorum is required as specified above) of the voting power of the aggregate number of Shares of that series or class entitled to vote shall be necessary to constitute a quorum for the transaction of business by that series or class. In the absence of a quorum, Shareholders entitled to cast votes representing a majority of the voting power of the outstanding Shares entitled to vote present in person or by proxy, or, where any provision of law, the Declaration or these By-laws requires that holders of any series or class shall vote as a series or class, Shareholders entitled to cast votes representing a majority of the voting power of the outstanding Shares of that series or class entitled to vote present in person or by proxy, may adjourn the meeting from time to time until a quorum shall be present. Only Shareholders of record shall be entitled to vote on any matter.

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**<u>SECTION 6. INSPECTION OF RECORDS.</u>** The records of the Trust shall be open to inspection by Shareholders to the same extent as is permitted shareholders of a Massachusetts business corporation.

**<u>SECTION 7. ACTION WITHOUT MEETING.</u>** Any action which may be taken by Shareholders may be taken without a meeting if Shareholders holding Shares representing a majority of the voting power of the Shares entitled to vote on the matter (or such larger proportion thereof as shall be required by law, the Declaration or these By-Laws for approval of such matter) consent to the action in writing and the written consents are filed with the records of the meetings of Shareholders. Such consent shall be treated for all purposes as a vote taken at a meeting of Shareholders.

#### ARTICLE IV

#### TRUSTEES
**<u>SECTION 1. MEETINGS OF THE TRUSTEES.</u>** The Trustees may in their discretion provide for regular or stated meetings of the Trustees. Notice of regular or stated meetings need not be given. Meetings of the Trustees other than regular or stated meetings shall be held whenever called by the Chair of the Trustees or by any one of the Trustees at the time being in office. Notice of the time and place of each meeting other than regular or stated meetings shall be given by the Secretary or an Assistant Secretary, or the Clerk or an Assistant Clerk or by the officer, Chair of the Trustees or other Trustee calling the meeting and shall be mailed to each Trustee at least two days before the meeting, or shall be telegraphed, cabled, or wirelessed or sent by facsimile or other electronic means to each Trustee at his usual or last known business or residence address, or personally delivered to him at least one day before the meeting. Such notice may, however, be waived by any Trustee. Notice of a meeting need not be given to any Trustee if a written waiver of notice, executed by him before or after the meeting, is filed with the records of the meeting, or to any Trustee who attends the meeting without protesting prior thereto or at its commencement the lack of notice to him. A notice or waiver of notice need not specify the purpose of any meeting. Except as provided by law the Trustees may meet by means of a telephone conference circuit or similar communications equipment by means of which all persons participating in the meeting can hear each other, which telephone conference meeting shall be deemed to have been held at a place designated by the Trustees at the meeting. Participation in a telephone conference meeting shall constitute presence in person at such meeting.

**<u>SECTION 2. QUORUM AND MANNER OF ACTING</u><u>.</u>** A majority of the Trustees shall be present at any regular or special meeting of the Trustees in order to constitute a quorum for the transaction of business at such meeting and (except as otherwise required by law, the Declaration or these By-Laws) the act of a majority of the Trustees present at any such meeting, at which a quorum is present, shall be the act of the Trustees. In the absence of a quorum, a majority of the Trustees present may adjourn the meeting from time to time until a quorum shall be present. Notice of an adjourned meeting need not be given.

#### ARTICLE V

#### COMMITTEES AND ADVISORY BOARD
**<u>SECTION 1. EXECUTIVE AND OTHER COMMITTEES</u><u>.</u>** The Trustees by vote of a majority of all the Trustees may elect from their own number an Executive Committee to consist of not less than three (3) Trustees to hold office at the pleasure of the Trustees which shall have the power to conduct the current and ordinary business of the Trust while the Trustees are not in session, including the purchase and sale of securities and the designation

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of securities to be delivered upon redemption of Shares of the Trust, and such other powers of the Trustees as the Trustees may, from time to time, delegate to the Executive Committee except those powers which by law, the Declaration or these By-Laws they are prohibited from delegating. The Trustees may also elect other Committees from time to time, the number composing such Committees, the powers conferred upon the same (subject to the same limitations as with respect to the Executive Committee) and the term of membership on such Committees to be determined by the Trustees. The Trustees may designate a Chair of any such Committee. In the absence of such designation a Committee may elect its own Chair.

**<u>SECTION 2. MEETING, QUORUM AND MANNER OF ACTING.</u>** The Trustees may:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) provide for stated meetings of any Committee;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) specify the manner of calling and notice required for special meetings of any Committee;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) specify the number of members of a Committee required to constitute a quorum and the number of members of a Committee required to exercise specified powers delegated to such Committee;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iv) authorize the making of decisions to exercise specified powers by written assent of the requisite number of members of a Committee without a meeting; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(v) authorize the members of a Committee to meet by means of a telephone conference circuit or similar communications equipment by means of which all persons participating in the meeting can hear each other.

Each Committee shall keep and maintain regular minutes of its meetings and records of decisions taken without a meeting.

**<u>SECTION 3. ADVISORY BOARD.</u>** The Trustees may appoint an Advisory Board to consist in the first instance of not less than three (3) members. Members of such Advisory Board shall not be Trustees or officers and need not be Shareholders. A member of such Advisory Board shall hold office for such period as the Trustees may by resolution provide. Any member of such board may resign therefrom by a written instrument signed by him which shall take effect upon delivery to the Trust. The Advisory Board shall have no legal powers and shall not perform the functions of Trustees in any manner, such Advisory Board being intended merely to act in an advisory capacity. Such Advisory Board shall meet at such times and upon such notice as the Trustees may by resolution provide.

#### ARTICLE VI

#### OFFICERS AND CHAIR OF THE TRUSTEES
**<u>SECTION 1. GENERAL PROVISIONS.</u>** The officers of the Trust shall be a President, a Treasurer and a Clerk, who shall be elected by the Trustees. In addition, there shall be a Chief Compliance Officer, who shall be elected or appointed by a majority of the Trustees, including a majority of the Trustees who are not Interested Persons of the Trust ("Independent Trustees"), and otherwise in accordance with rule 38a-1 (or any successor rule) under the 1940 Act, as such rule may be amended from time to time ("Rule 38a-1"). The Trustees may elect or appoint such other officers or agents of the Trust as the business of the Trust may require, including one or more Vice Presidents, a Secretary and one or more Assistant Secretaries, one or more Assistant Treasurers, and one or

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more Assistant Clerks. The Trustees may delegate to any officer of the Trust or Committee the power to appoint any subordinate officers or agents. In addition, there shall be an office of Chair of the Trustees, which shall serve on behalf of the Trustees, but shall not be an office of the Trust. The office of Chair of the Trustees may be held by more than one person. Any Chair of the Trustees shall be elected by a majority of the Trustees, including a majority of the Independent Trustees.

**<u>SECTION 2. TERM OF OFFICE AND QUALIFICATIONS</u><u>.</u>** Except as otherwise provided by law, the Declaration or these By-Laws, the Chair of the Trustees, the President, the Treasurer, the Clerk and the Chief Compliance Officer shall hold office until his resignation has been accepted by the Trustees or until his respective successor shall have been duly elected and qualified, or in each case until he sooner dies, resigns, is removed or becomes disqualified. All other officers shall hold office at the pleasure of the Trustees. Any two or more offices may be held by the same person. Any officer of the Trust may be, but none need be, a Trustee or Shareholder. Any Chair of the Trustees shall be an Independent Trustee, shall not be an officer of the Trust and may be, but need not be, a Shareholder.

**<u>SECTION 3. REMOVAL AND RESIGNATION.</u>** The Trustees, at any regular or special meeting of the Trustees, may remove any officer of the Trust with or without cause by a vote or consent of a majority of the Trustees, provided that any removal of the Chief Compliance Officer shall also require the vote or consent of a majority of the Independent Trustees and otherwise be in accordance with the provisions of Rule 38a-1. Subject to the limitation on the termination of the Chief Compliance Officer noted above, the term of any officer of the Trust who is an employee of Massachusetts Financial Services Company (or any affiliate thereof) shall terminate automatically, without action of the Trustees, upon the effective date of termination (voluntary or otherwise) of such officer's employment with MFS or applicable affiliate, unless otherwise specified by the Trustees. The Trustees may at any time remove any Chair of the Trustees with or without cause by a vote or consent of a majority of the Trustees, including a majority of the Independent Trustees. Any officer or agent appointed by any officer or Committee may be removed with or without cause by such appointing officer or Committee (subject to the provisions of Rule 38a-1 in the case of the Chief Compliance Officer). Any officer of the Trust or Chair of the Trustees may resign at any time by written instrument signed by him and delivered to the Trust. Such resignation shall be effective upon receipt unless specified to be effective at some other time. Except to the extent expressly provided in a written agreement with the Trust, no officer of the Trust or Chair of the Trustees resigning or removed shall have any right to any compensation for any period following his resignation or removal, or any right to damages on account of such removal.

**<u>SECTION 4. POWERS AND DUTIES OF THE CHAIR OF THE TRUSTEES</u><u>.</u>** The powers and duties of the Chair of the Trustees shall include (i) calling meetings of the Trustees when deemed necessary, (ii) setting the agenda for meetings of the Trustees with input from officers of the Trust and, as necessary or appropriate, the Trust's Investment Adviser and other service providers, (iii) presiding at all meetings of the Trustees, (iv) presiding at all meetings of Shareholders, except that the Chair of the Trustees may appoint the President or another officer of the Trust to preside at such meetings in place of the Chair of the Trustees, (v) acting as a liaison between the Board of Trustees and the Trust's officers, Investment Adviser and other service providers and (vi) exercising such other powers and duties relating to the operations of the Trustees as, from time to time, may be conferred upon or assigned to such office by the Trustees, provided that the Chair of the Trustees shall have no individual authority to act for the Trust as an officer of the Trust. In carrying out the responsibilities and duties of the office, the Chair of the Trustees may seek assistance and input from other Trustees or Committees of the Trustees, officers of the Trust and the Trust's Investment Adviser and other service providers, as deemed necessary or appropriate. In the absence or disability of the Chair of the Trustees, a majority of the Trustees, including a majority of the Independent Trustees, shall appoint an Independent Trustee to perform the duties and exercise the powers of the Chair of the Trustees, provided that, unless and until such appointment is made, all of the Independent Trustees shall collectively perform such duties and exercise such powers.

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**<u>SECTION 5. POWERS AND DUTIES OF THE PRESIDENT</u><u>.</u>** Subject to the control of the Trustees, the Chair of the Trustees and any Committees of the Trustees, the President shall at all times exercise a general supervision and direction over the affairs of the Trust, including the power to employ attorneys and counsel for the Trust and to employ such subordinate officers, agents, clerks and employees as he may find necessary to transact the business of the Trust. The President shall be the chief executive officer of the Trust. The President shall have the power to grant, issue, execute or sign such powers of attorney, proxies or other documents as may be deemed advisable or necessary in furtherance of the interests of the Trust. The President shall perform such other duties as may be assigned to him from time to time by the Trustees or the Chair of the Trustees.

**<u>SECTION 6. POWERS AND DUTIES OF VICE PRESIDENTS</u><u>.</u>** In the absence or disability of the President, the Vice President or, if there be more than one Vice President, any Vice President designated by the Trustees shall perform all the duties and may exercise any of the powers of the President, subject to the control of the Trustees. Each Vice President shall perform such other duties as may be assigned to him from time to time by the Trustees or the President.

**<u>SECTION 7. POWERS AND DUTIES OF THE TREASURER.</u>** The Treasurer shall be the principal financial and accounting officer of the Trust. The Treasurer shall deliver all funds of the Trust which may come into his hands to such custodian as the Trustees may employ. The Treasurer shall render a statement of condition of the finances of the Trust to the Trustees as often as they shall require the same and shall in general perform all the duties incident to the office of Treasurer and such other duties as from time to time may be assigned to him by the Trustees. The Treasurer shall give a bond for the faithful discharge of his duties, if required to do so by the Trustees, in such sum and with such surety or sureties as the Trustees shall require.

**<u>SECTION 8. POWERS AND DUTIES OF THE CLERK</u><u>.</u>** The Clerk shall keep the minutes of all meetings of the Shareholders in proper books provided for that purpose; he shall have custody of the seal of the Trust; he shall have charge of the Share transfer books, lists and records unless the same are in the charge of the Transfer Agent. He or the Secretary, if any, shall attend to the giving and serving of all notices by the Trust in accordance with the provisions of these By-Laws and as required by law; and subject to these By-Laws, he shall in general perform all duties incident to the office of Clerk and such other duties as from time to time may be assigned to him by the Trustees.

**<u>SECTION 9. POWERS AND DUTIES OF THE SECRETARY.</u>** The Secretary, if any, shall keep the minutes of all meetings of the Trustees. He shall perform such other duties and have such other powers in addition to those specified in these By-Laws as the Trustees shall from time to time designate. If there be no Secretary or Assistant Secretary, the Clerk shall perform the duties of Secretary.

**<u>SECTION 10. POWERS AND DUTIES OF ASSISTANT TREASURERS.</u>** In the absence or disability of the Treasurer, any Assistant Treasurer designated by the Trustees shall perform all the duties, and may exercise any of the powers, of the Treasurer. Each Assistant Treasurer shall perform such other duties as from time to time may be assigned to him by the Trustees. Each Assistant Treasurer shall give a bond for the faithful discharge of his duties, if required to do so by the Trustees, in such sum and with such surety or sureties as the Trustees shall require.

**<u>SECTION 11. POWERS AND DUTIES OF ASSISTANT CLERKS</u><u>.</u>** In the absence or disability of the Clerk, any Assistant Clerk designated by the Trustees shall perform all the duties, and may exercise any of the powers, of the Clerk. The Assistant Clerks shall perform such other duties as from time to time may be assigned to them by the Trustees.

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**<u>SECTION 12. POWERS AND DUTIES OF ASSISTANT SECRETARIES.</u>** In the absence or disability of the Secretary, any Assistant Secretary designated by the Trustees shall perform all of the duties, and may exercise any of the powers, of the Secretary. The Assistant Secretaries shall perform such other duties as from time to time may be assigned to them by the Trustees.

**<u>SECTION 13. POWERS AND DUTIES OF THE CHIEF COMPLIANCE OFFICER.</u>** The Chief Compliance Officer shall perform the duties and have the responsibilities of the chief compliance officer of the Trust in accordance with Rule 38a-1, and shall perform such other duties and have such other responsibilities as from time to time may be assigned to him by the Trustees. The Chief Compliance Officer shall report directly to the Trustees or a Committee of the Trustees in carrying out his functions.

**<u>SECTION 14. COMPENSATION OF OFFICERS AND TRUSTEES AND MEMBERS OF THE ADVISORY BOARD.</u>** Subject to any applicable law or provision of the Declaration, the compensation of the officers of the Trust and Trustees (including the Chair of the Trustees) and members of the Advisory Board shall be fixed from time to time by the Trustees or, in the case of officers, by any Committee or officer upon whom such power may be conferred by the Trustees, provided that any compensation of the Chief Compliance Officer shall be approved by a majority of the Trustees, including a majority of the Independent Trustees. No officer shall be prevented from receiving such compensation as such officer by reason of the fact that he is also a Trustee.

#### ARTICLE VII

#### FISCAL YEAR
The fiscal year of the Trust shall be as specified on Appendix A hereto, provided, however, that the Trustees may from time to time change the fiscal year of the Trust or any series.

#### ARTICLE VIII

#### SEAL
The Trustees may adopt a seal which shall be in such form and shall have such inscription thereon as the Trustees may from time to time prescribe.

#### ARTICLE IX

#### WAIVERS OF NOTICE
Whenever any notice is required to be given by law, the Declaration or these By-Laws, a waiver thereof in writing, signed by the person or persons entitled to such notice, whether before or after the time stated therein, shall be deemed equivalent thereto. A notice shall be deemed to have been telegraphed, cabled or wirelessed or sent by facsimile or other electronic means for the purposes of these By-Laws when it has been delivered to a representative of any telegraph, cable or wireless company with instruction that it be telegraphed, cabled or wirelessed or when a confirmation of such facsimile having been sent, or a confirmation that such electronic means has sent the notice being transmitted, is generated. Any notice shall be deemed to be given at the time when the same shall be mailed, telegraphed, cabled or wirelessed or when sent by facsimile or other electronic means.

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#### ARTICLE X

#### SALE OF SHARES OF THE TRUST
The Trustees may from time to time issue and sell or cause to be issued and sold Shares for cash or other property. The Shares, including additional Shares which may have been repurchased by the Trust (herein sometimes referred to as "treasury shares"), may not be sold at a price less than the net asset value thereof (as defined in Article XI hereof) determined by or on behalf of the Trustees next after the sale is made or at some later time after such sale.

No Shares need be offered to existing Shareholders before being offered to others. No Shares shall be sold by the Trust (although Shares previously contracted to be sold may be issued upon payment therefor) during any period when the determination of net asset value is suspended. In connection with the acquisition by merger or otherwise of all or substantially all the assets of an investment company (whether a regulated or private investment company or a personal holding company), the Trustees may issue or cause to be issued Shares and accept in payment therefor such assets valued at not more than market value thereof in lieu of cash, notwithstanding that the federal income tax basis to the Trust of any assets so acquired may be less than the market value, provided that such assets are of the character in which the Trustees are permitted to invest the funds of the Trust.

#### ARTICLE XI

#### NET ASSET VALUE OF SHARES
The term "net asset value" per Share of any class or series of Shares shall mean: (i) the value of all assets of that series or class; (ii) less total liabilities of such series or class; (iii) divided by the number of Shares of such series or class outstanding, in each case at the time of such determination, all as determine by or under the direction of the Trustees. Such value shall be determined on such days and at such time as the Trustees may determine. Such determination shall be made with respect to securities for which market quotations are readily available, at the market value of such securities; and with respect to other securities and assets, at the fair value as determined in good faith by or pursuant to the direction of the Trustees or a Committee thereof, provided, however, that the Trustees, without shareholder approval, may alter the method of appraising portfolio securities insofar as permitted under the 1940 Act, including use of the amortized cost method. The Trustees may delegate any powers and duties under this Article XI with respect to appraisal of assets and liabilities. At any time the Trustees may cause the value per share last determined to be determined again in a similar manner and may fix the time when such predetermined value shall become effective. Determinations of net asset value made by the Trustees or their delegates in good faith shall be binding on all parties concerned.

#### ARTICLE XII

#### DIVIDENDS AND DISTRIBUTIONS
**<u>SECTION 1. LIMITATIONS ON DISTRIBUTIONS.</u>** The total of distributions to Shareholders of a particular series or class paid in respect of any one fiscal year, subject to the exceptions noted below, shall, when and as declared by the Trustees, be approximately equal to the sum of:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) the net income, exclusive of the profits or losses realized upon the sale of securities or other property, of such series or class for such fiscal year, determined in accordance with generally accepted accounting principles (which, if the Trustees so determine, may be adjusted for net

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amounts included as such accrued net income in the price of Shares of such series or class issued or repurchased), but if the net income of such series or class exceeds the amount distributed by less than one cent per share outstanding at the record date for the final dividend, the excess shall be treated as distributable income of such series or class for the following fiscal year; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) in the discretion of the Trustees, an additional amount which shall not substantially exceed the excess of profits over losses on sales of securities or other property allocated or belonging to such series or class for such fiscal year; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) In discretion of the Trustees, an additional amount from other Trust assets.

The decision of the Trustees as to what, in accordance with generally accepted accounting principles, is income and what is principal shall be final, and except as specifically provided herein the decision of the Trustees as to what expenses and charges of the Trust shall be charged against principal and what against income shall be final, all subject to any applicable provisions of the 1940 Act. For the purposes of the limitation imposed by this Section 1, Shares issued pursuant to Section 2 of this Article XII shall be valued at the amount of cash which the Shareholders would have received if they had elected to receive cash in lieu of such Shares.

Inasmuch as the computation of net income and gains for federal income tax purposes may vary from the computation thereof on the books of the Trust, the above provisions shall be interpreted to give to the Trustees the power in their discretion to distribute for any fiscal year as ordinary dividends and as capital gains distributions, respectively, additional amounts sufficient to enable the Trust to avoid or reduce liability for taxes. Any payment made to Shareholders pursuant to clause (ii) and/or clause (iii) of this Section 1 shall be accompanied by a written statement showing the source or sources of such payment, and the basis of computation thereof.

**<u>SECTION 2. DISTRIBUTIONS PAYABLE IN CASH OR SHARES.</u>** The Trustees shall have power, to the fullest extent permitted by the laws of The Commonwealth of Massachusetts but subject to the limitation as to cash distributions imposed by Section 1 of this Article XII, at any time or from time to time to declare and cause to be paid distributions payable at the election of any Shareholder of any series or class (whether exercised before or after the declaration of the distribution) either in cash or in Shares of such series, provided that the sum of:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) the cash distribution actually paid to any Shareholder, and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) the net asset value of the Shares which that Shareholder elects to receive, in effect at such time at or after the election as the Trustees may specify, shall not exceed the full amount of cash to which that Shareholder would be entitled if he elected to receive only cash.

In the case of a distribution payable in cash or Shares at the election of a Shareholder, the Trustees may prescribe whether a Shareholder, failing to express his election before a given time shall be deemed to have elected to take Shares rather than cash, or to take cash rather then Shares, or to take Shares with cash adjustment of fractions.

The Trustees, in their sole discretion, may cause the Trust to require that all distributions payable to a shareholder in amounts less than such amount or amounts determined from time to time by the Trustees be reinvested in additional shares of the Trust rather than paid in cash, unless a shareholder who, after notification that his distributions will be reinvested in additional shares in accordance with the preceding phrase, elects to receive such distributions in cash. Where a shareholder has elected to receive distributions in cash and the postal or other delivery service is unable to deliver checks to the shareholder's address of record, the Trustees, in their sole

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discretion, may cause the Trust to require that such Shareholder's distribution option be converted to having all distributions reinvested in additional shares.

**<u>SECTION 3. STOCK DIVIDENDS.</u>** Anything in these By-Laws to the contrary notwithstanding, the Trustees may at any time declare and distribute pro rata among the Shareholders of any series or class a "stock dividend" out of either authorized but unissued Shares of such series or class or treasury Shares of such series or class or both.

#### ARTICLE XIII

#### AMENDMENTS
These By-Laws, or any of them, may be altered, amended, repealed or restated, or new By-Laws may be adopted, at any time by the Trustees. Action by the Trustees with respect to the By-Laws shall be taken by an affirmative vote of a majority of the Trustees.

#### ARTICLE XIV

#### CLAIMS AND DISPUTES
**<u>SECTION 1. FORUM FOR ADJUDICATION OF DISPUTES.</u>** Unless the Trust consents in writing to the selection of an alternative forum, (i) any action or proceeding brought by or on behalf of the Trust or any of the Trust's Shareholders, (ii) any action asserting a claim against the Trust (or a series thereof), or against any trustee, officer or other employee of the Trust, whether arising under federal law, the law of any state, or the law of a non-U.S. jurisdiction, (iii) any action asserting a claim arising pursuant to any provision of the Massachusetts Business Corporation Act, the statutory or common law of the Commonwealth of Massachusetts, the Declaration or these By-Laws, (iv) any action to interpret, apply, enforce or determine the validity of the Declaration, these By-Laws, or any agreement on behalf of the Trust authorized thereunder, or (v) any action asserting a claim governed by the internal affairs doctrine (each, a "Covered Action") shall be brought in the state or federal courts located within the Commonwealth of Massachusetts. Any person purchasing or otherwise acquiring or holding any interest in shares of beneficial interest of the Trust shall be (i) deemed to have notice of and consented to the provisions of this Section, and (ii) deemed to have waived any argument relating to the inconvenience of the forums referenced above in connection with any action or proceeding described in this Section.

If any Covered Action is filed in a court other than the state or federal courts of the Commonwealth of Massachusetts (a "Foreign Action") in the name of any shareholder, such shareholder shall be deemed to have consented to (i) the personal jurisdiction of the state and federal courts located within the Commonwealth of Massachusetts in connection with any action brought in any such courts to enforce the first paragraph of this Section (an "Enforcement Action") and (ii) having service of process made upon such shareholder in any such Enforcement Action by service upon such shareholder's counsel in the Foreign Action as agent for such shareholder.

If any provision or provisions of this Section shall be held to be invalid, illegal or unenforceable as applied to any person or circumstance for any reason whatsoever, then, to the fullest extent permitted by law, the validity, legality and enforceability of such provision(s) in any other circumstance and of the remaining provisions of this Section (including, without limitation, each portion of any sentence of this Section containing any such provision held to be

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invalid, illegal or unenforceable that is not itself held to be invalid, illegal or unenforceable) and the application of such provision to other persons and circumstances shall not in any way be affected or impaired thereby.

**<u>SECTION 2. CLAIMS.</u>** As used herein, a "direct Shareholder claim" shall refer to (i) a claim based upon alleged violations of a Shareholder's individual rights independent of any harm to the Trust, including a Shareholder's voting rights under Article III, rights to receive a dividend payment as may be declared from time to time, rights to inspect books and records, or other similar rights personal to the Shareholder and independent of any harm to the Trust; and (ii) a claim for which a direct shareholder action is expressly provided under the U.S. federal securities laws. Any claim asserted by a Shareholder that is not a direct Shareholder claim, including without limitation any claims purporting to be brought on behalf of the Trust or involving any alleged harm to the Trust, shall be considered a "derivative claim" as used herein.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a. Derivative Claims. No Shareholder shall have the right to bring or maintain any court action or other proceeding asserting a derivative claim or any claim asserted on behalf of the Trust or involving any alleged harm to the Trust without first making demand on the Trustees requesting the Trustees to bring or maintain such action, proceeding or claim. Such demand shall be excused only when the plaintiff makes a specific showing that irreparable nonmonetary injury to the Trust or any series or class thereof would otherwise result, or if a majority of the Board of Trustees, or a majority of any committee established to consider the merits of such action, has a material personal financial interest in the action at issue. A Trustee shall not be deemed to have a personal financial interest in an action or otherwise be disqualified from ruling on a Shareholder demand by virtue of the fact that such Trustee receives remuneration from his or her service on the Board of Trustees of the Trust or on the boards of one or more investment companies with the same or an affiliated investment adviser or underwriter, or the amount of such remuneration. Such demand shall be mailed to the Secretary of the Trust at the Trust's principal office and shall set forth with particularity the nature of the proposed court action, proceeding or claim and the essential facts relied upon by the shareholder to support the allegations made in the demand. The Trustees shall consider such demand within 90 days of its receipt by the Trust. In their sole discretion, the Trustees may submit the matter to a vote of shareholders of the Trust or series or class of Shares, as appropriate. Any decision by the Trustees to bring, maintain or settle (or not to bring, maintain or settle) such court action, proceeding or claim, or to submit the matter to a vote of Shareholders, shall be binding upon the Shareholders. This Section 2(a) of Article XIV does not apply to claims arising under the federal securities laws.

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<u>Master Amended and Restated By-Laws, January 1, 2002, as most recently revised</u> 

<u>September 25, 2024</u>

<u>APPENDIX A</u>

<u>Revised: May 1, 2026</u>

<u>Trust (FYE)</u>

MFS Series Trust I (8/31)

MFS Series Trust II (11/30)

MFS Series Trust III (1/31)

MFS Series Trust IV (8/31)

MFS Series Trust V (9/30)

MFS Series Trust VI (10/31)

MFS Series Trust VII (7/31)

MFS Series Trust VIII (10/31)

MFS Series Trust IX (4/30<sup>1</sup>, 10/31<sup>2</sup>)

MFS Series Trust X (5/31<sup>3</sup>, 7/31<sup>4</sup>, 10/31<sup>5</sup>, 11/30<sup>6</sup>)

MFS Series Trust XI (9/30)

MFS Series Trust XII (4/30<sup>7</sup>)

MFS Series Trust XIII (2/28<sup>8</sup>, 8/31<sup>9</sup>)

MFS Series Trust XIV (8/31)

MFS Series Trust XV (10/31)

MFS Series Trust XVI (6/30)

MFS Series Trust XVII (6/30)

MFS Municipal Series Trust (3/31)

MFS Variable Insurance Trust (12/31)

Massachusetts Investors Trust (12/31)

Massachusetts Investors Growth Stock Fund (11/30)

MFS Active Exchange Traded Funds Trust (2/28<sup>10</sup>)

_____________________________________________________________________

<sup>1</sup> The fiscal year end is 4/30 for the following series of MFS Series Trust IX: MFS Corporate Bond Fund, MFS Limited Maturity Fund, MFS Municipal Limited Maturity Fund, and MFS Total Return Bond Fund.

<sup>2</sup> The fiscal year end is 10/31 for the following series of MFS Series Trust IX: MFS Inflation-Adjusted Bond Fund.

<sup>3</sup> The fiscal year end is 5/31 for the following series of MFS Series Trust X: MFS Aggressive Growth Allocation Fund, MFS Blended Research Growth Equity Fund, MFS Blended Research Mid Cap Equity Fund, MFS Blended Research Small Cap Equity Fund, MFS Blended Research Value Equity Fund, MFS Conservative Allocation Fund, MFS Emerging Markets Equity Fund, MFS Growth Allocation Fund, MFS International Diversification Fund, MFS International Growth Fund, MFS International Intrinsic Equity Fund, MFS International Large Cap Value Fund, MFS Managed Wealth Fund, and MFS Moderate Allocation Fund.

<sup>4</sup> The fiscal year end is 7/31 for the following series of MFS Series Trust X: MFS Emerging Markets Debt Fund.

<sup>5</sup> The fiscal year end is 10/31 for the following series of MFS Series Trust X: MFS Emerging Markets Debt Local Currency Fund.

<sup>6</sup> The fiscal year end is 11/30 for the following series of MFS Series Trust X: MFS Global Opportunistic Bond Fund.

<sup>7</sup> The fiscal year end is 4/30 for the following series of MFS Series Trust XII: MFS Lifetime Income Fund, MFS Lifetime 2025 Fund, MFS Lifetime 2030 Fund, MFS Lifetime 2035 Fund, MFS Lifetime 2040 Fund, MFS Lifetime 2045 Fund, MFS Lifetime 2050 Fund, MFS Lifetime 2055 Fund, MFS Lifetime 2060 Fund, MFS Lifetime 2065 Fund, MFS Lifetime 2070 Fund, and MFS Core Bond Fund.

<sup>8</sup> The fiscal year end is 2/28 for the following series of MFS Series Trust XIII: MFS Diversified Income Fund, MFS Government Securities Fund, and MFS New Discovery Fund.

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<sup>9</sup> The fiscal year end is 8/31 for the following series of MFS Series Trust XIII: MFS Global Real Estate Fund.

<sup>10</sup> The fiscal year end is 2/28 for the following series of MFS Active Exchange Traded Funds Trust: MFS Active Core Plus Bond ETF, MFS Active Growth ETF, MFS Active Intermediate Muni Bond ETF, MFS Active International ETF, MFS Active International Large Cap Value ETF, MFS Active Mid Cap ETF, MFS Active Value ETF, MFS Blended Research Core Equity ETF, MFS Blended Research Emerging Markets Equity ETF, MFS Blended Research International Equity ETF, and MFS Blended Research Small-Mid Cap ETF.

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## Ex-99.D

**EXHIBIT NO. 99.**(d) 4

#### INVESTMENT MANAGEMENT AGREEMENT
INVESTMENT MANAGEMENT AGREEMENT (the "Agreement"), dated this _____ day of _____, by and between **MFS ACTIVE EXCHANGE TRADED FUNDS TRUST**, a Massachusetts business trust (the "Trust"), on behalf of its series of shares (each a "Fund") listed on Appendix A attached hereto, and **MASSACHUSETTS FINANCIAL SERVICES COMPANY**, a Delaware corporation (the "Adviser").

#### WITNESSETH:
WHEREAS, the Trust is engaged in business as an investment company registered under the Investment Company Act of 1940, as amended (the "1940 Act"); and

WHEREAS, the Adviser is willing to provide services to each Fund on the terms and conditions hereinafter set forth;

NOW, THEREFORE, in consideration of the mutual covenants and agreements of the parties hereto as herein set forth, the parties covenant and agree as follows:

**<u>Article 1. Duties of the Adviser.</u>** (a) The Adviser shall provide each Fund with such investment advice and supervision as the latter may from time to time consider necessary for the proper supervision of its assets. The Adviser shall act as investment adviser to each Fund and as such shall furnish continuously an investment program and shall determine from time to time what securities or other instruments shall be purchased, sold or exchanged and what portion of the assets of a Fund shall be held uninvested, subject always to the restrictions of the Trust's Declaration of Trust, dated March 6, 2024, and By-Laws, each as amended from time to time (respectively, the "Declaration" and the "By-Laws"), to the provisions of the 1940 Act and the Rules, Regulations and orders thereunder, exemptive relief obtained from the Securities and Exchange Commission and relied on by any Fund, and to a Fund's then-current prospectus and statement of additional information. The Adviser shall also provide or procure the supervisory and administrative and other services set forth in this Agreement, as amended or supplemented from time to time. The Adviser also shall exercise voting rights, rights to consent to corporate actions and any other rights pertaining to a Fund's portfolio securities in accordance with the Adviser's policies and procedures as presented to the Trustees of the Trust from time to time. Should the Trustees at any time, however, make any definite determination as to the investment policy and notify the Adviser thereof in writing, the Adviser shall be bound by such determination for the period, if any, specified in such notice or until similarly notified that such determination shall be revoked.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) The Adviser shall take, on behalf of each Fund, all actions which it deems necessary to implement the investment policies determined as provided above, and in particular to place all orders for the purchase or sale of portfolio securities or other instruments for the Fund's account with brokers or dealers selected by it, and to that end, the Adviser is authorized as the agent of a Fund to give instructions to the custodian of the Fund as to the deliveries of securities or other instruments and payments of cash for the account of the Fund. In connection with the selection of such brokers or dealers and the placing of such orders, the Adviser is directed to seek for a Fund the best overall price and execution available from responsible brokerage firms, taking account of all factors it deems relevant, including by way of illustration: price; the availability of the security to be delivered in-kind by authorized

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) The Adviser may from time to time enter into sub-investment advisory agreements with respect to a Fund with one or more investment advisers with such terms and conditions as the Adviser may determine and delegate to such sub-adviser any of its obligations hereunder, subject to the Adviser's supervision, provided that such sub-investment advisory agreements have been approved in accordance with applicable provisions of the 1940 Act and any rules, regulations or orders of the Securities and Exchange Commission thereunder. In all instances, the Adviser must oversee the provision of such delegated sub-investment advisory services, the Adviser must bear the separate costs of employing any sub-adviser, and no delegation will relieve the Adviser of any of its obligations under this Agreement.

#### Article 2. Supervisory and Administrative Services.
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) Subject to the general supervision of the Board of Trustees, the Adviser shall furnish at its own expense investment advisory and administrative services, office space, equipment and clerical personnel necessary for servicing the investments of each Fund and maintaining its organization, and investment advisory facilities and executive and supervisory personnel for managing the investments and effecting the portfolio transactions of the Fund. The Adviser shall arrange, if desired by the Fund, for directors, officers and employees of the Adviser to serve as Trustees, officers or agents of the Fund if duly elected or appointed to such positions and subject to their individual consent and to any limitations imposed by law.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) The Adviser shall provide or cause to be furnished at its own expense all supervisory and administrative services reasonably necessary for the operation of each Fund including, without limitation, those set forth in Appendix C hereto.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) <u>Standards; Reports</u>. In performing these supervisory and administrative services, the Adviser:

(i)shall comply with the applicable provisions of the 1940 Act, with the applicable provisions of the Investment Advisers Act of 1940, as amended (the "Advisers Act"), with all other applicable federal, state and foreign laws and regulations, with all applicable rules and regulations of securities exchanges on which the Fund's shares may be listed for trading, if any, with any applicable procedures adopted by the Fund's Board of Trustees, and, to the extent then currently applicable, with the provisions of the Fund's registration statement filed on Form N-1A as supplemented or amended from time to time;

(ii)will make available to the Fund, promptly upon request, any of the Fund's books and records as are maintained under this Agreement, and will furnish to regulatory authorities having the requisite authority any such books and records and any information or reports in connection with the Adviser's services under this Agreement that may be requested in order to ascertain whether the

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operations of the Fund are being conducted in a manner consistent with applicable laws and regulations; and

(iii)will regularly report to the Fund's Board of Trustees on the supervisory and administrative services provided under this Agreement and will furnish the Fund's Board of Trustees with respect to the Fund such information as the Board of Trustees may reasonably require in connection with the annual approval of this Agreement and such other periodic and special reports as the Trustees or officers of the Fund may reasonably request. The Adviser shall also make its officers and employees available to the Board of Trustees and officers of the Trust for consultation and discussions regarding the supervision and administration of the Fund and services provided to the Fund under this Agreement.

(b)Should the Trust have occasion to request the Adviser or its affiliates to perform administrative or other additional services not herein contemplated or to request the Adviser or its affiliates to arrange for the services of others, the Adviser or its affiliates will act for the Trust on behalf of the Fund upon request to the best of its ability, with compensation for the services to be agreed upon with respect to each such occasion as it arises. No such agreement for additional services shall expand, reduce or otherwise alter the obligations of the Adviser, or the compensation that the Adviser is due, under this Agreement.

**<u>Article 3.</u> <u>Allocation of Charges and Expenses.</u>** (a) With respect to each Fund, the Adviser, either itself or through an affiliated company, undertakes to pay or to reimburse the Fund for all of the Fund's ordinary operating expenses that the Fund would otherwise be required to pay, including but not limited to (i) the fees and expenses of Trustees who are not "interested persons" of the Trust within the meaning of the 1940 Act ("Independent Trustees"); (ii) costs of printing, mailing and filing associated with the preparation and distribution of registration statements, prospectuses and reports of the Fund to its shareholders, the filing of reports with regulatory bodies, the maintenance of the Trust's existence and qualification to do business, and the registration of shares with federal and state securities authorities; (iii) expenses of the Fund for transfer agent(s), registrar(s) and/or dividend disbursing agent(s); (iv) expenses of the Fund for custodian(s) and related custodial services; (v) the costs of Fund accounting services provided by third parties to the Fund; (vi) the costs of services provided by independent accountants and outside legal and tax counsel to the Funds and the Independent Trustees incurred in the ordinary course of business; (vii) the Fund's allocable portion of the fidelity bond required by Section 17(g) of the 1940 Act, and directors' and officers' liability and other insurance premiums; (viii) the Fund's allocable portion of expenses of obtaining quotations and other pricing information for calculating the value of the Fund's net assets, including the costs of independent pricing services; (ix) the Fund's allocable portion of dues for membership in various industry organizations and associations; (x) the costs of third-party software used for the Fund's financial reporting, tax preparation, registration statement preparation, and other required regulatory reporting as appropriately allocated to the Fund; and (xi) costs of third-party tax return preparation and filing services (including tax return extension services, fiscal distribution calculation services, excise tax distribution services and related tax compliance or tax advisory consulting services).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Notwithstanding the foregoing, during the term of this Agreement the Fund shall assume and pay the following expenses: (i) interest expense or other costs of the Fund's borrowing(s) or financing activities; (ii) taxes (including, but not limited to, income, excise, transfer and withholding taxes, including any accrued deferred tax liability) and governmental fees levied against a Fund; (iii) costs of any litigation such as any indemnification obligation, attorneys' fees, expenses, costs, judgments, amounts paid in settlement, fines, penalties, fees of expert witnesses, document production fees, and all other liabilities whatsoever incurred or paid by the Fund or a person indemnified by a Fund; (iv) costs associated with any tax reclaims or similar actions, including any fees paid on a contingent basis; (v) brokerage fees and commissions and other investment-related transaction costs incurred by or for the Fund; (vi) expenses of a Fund's securities lending, if any, including any securities lending

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agent fees, as governed by a separate securities lending agreement; (vii) expenses incident to meetings of Fund shareholders and the associated preparation, filing, printing and mailing of related notices and proxy statements; (viii) expenses incurred in connection with the provision of distribution services under a plan adopted pursuant to Rule 12b-1 under the 1940 Act (if any); (ix) investment-related expenses (such as interest and borrowing expenses incurred in connection with the fund's investment activity, and fees and expenses associated with investments in investment companies and other similar investment vehicles); (x) expenses of a Fund which are capitalized in accordance with generally accepted accounting principles; (xi) the fee paid to the Adviser pursuant to this Agreement; (xii) other nonrecurring or extraordinary expenses (as determined by a majority of the Trustees of the Trust who are not "interested persons" of the Trust); and (xiii) such other expenses as approved by a majority of the Trust's Board of Trustees. It is understood that service charges billed directly to shareholders of the Fund, including charges for exchanges, redemptions, or other services, shall not be payable by the Adviser, but may be received and retained by the Adviser or its affiliates. It is also understood that the Adviser and/or a Fund may, from time to time, allocate or reallocate expenses between the Fund and any class of the Fund.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) The payment or assumption by the Adviser of any expenses of the Trust or a Fund that the Adviser is not obligated by this Agreement or otherwise to pay or assume shall not obligate the Adviser to pay or assume the same or any similar expenses of the Trust or the Fund on any subsequent occasion.

**<u>Article 4. Compensation of the Adviser.</u>** With respect to each Fund, for the services to be rendered and the facilities provided, the Fund shall pay to the Adviser an investment management fee computed daily and paid monthly as set forth in Appendix B attached hereto. If the Adviser shall serve for less than the whole of any period specified in this Article 4, the compensation paid to the Adviser will be prorated.

**<u>Article 5. Covenants of the Adviser</u>**. The Adviser agrees that it will not deal with itself, or with the Trustees of the Trust or the Trust's distributor, if any, as principals in making purchases or sales of securities or other property for the account of a Fund, except as permitted by the 1940 Act and any rules, regulations or orders of the Securities and Exchange Commission thereunder, will not take a long or short position in the shares of a Fund except as permitted by the applicable law, and will comply with all other provisions of the Declaration and the By-Laws and the Fund's then-current prospectus and statement of additional information of a Fund relative to the Adviser and its directors and officers.

**<u>Article 6. Limitation of Liability of the Adviser.</u>** The Adviser shall not be liable for any error of judgment or mistake of law or for any loss arising out of any investment or for any act or omission in the performance of its responsibilities hereunder, except for willful misfeasance, bad faith, gross negligence or reckless disregard of its duties and obligations hereunder. As used in this Article 6, the term "Adviser" shall include directors, officers and employees of the Adviser as well as that corporation itself.

**<u>Article 7. Activities of the Adviser.</u>** (a) The Trust acknowledges that the services of the Adviser to each Fund are not exclusive, the Adviser being free to render investment advisory and/or other services to others. The Trust further acknowledges that it is possible that, based on their investment objectives and policies, certain funds or accounts managed by the Adviser or its affiliates may at times take investment positions or engage in investment techniques which are contrary to positions taken or techniques engaged in on behalf of a Fund. Notwithstanding the foregoing, the Adviser will at all times endeavor to treat all of its clients in a fair and equitable manner.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) The Trust acknowledges that whenever a Fund and one or more other funds or accounts advised by the Adviser have available monies for investment, investments suitable and appropriate for each shall be allocated in a manner believed by the Adviser to be fair and equitable to each entity. Similarly, opportunities to sell securities or other investments shall be allocated in a manner believed by the Adviser to be fair and equitable to each entity. The

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Trust acknowledges that in some instances this may adversely affect the size of the position that may be acquired or disposed of for a Fund.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) It is understood that the Trustees, officers and shareholders of the Trust are or may be or become interested in the Adviser or its affiliates, as directors, officers, employees, or otherwise and that directors, officers and employees of the Adviser or its affiliates are or may become similarly interested in the Trust, and that the Adviser or its affiliates may be or become interested in a Fund as a shareholder or otherwise.

**<u>Article 8. MFS Name.</u>** The Trust acknowledges that the names "Massachusetts Financial Services," "MFS" or any derivatives thereof or logos associated with those names (collectively, the "MFS Marks") are the valuable property of the Adviser and its affiliates. The Adviser grants the Trust and the Fund a non-exclusive and non-transferable right and sub-license to use the MFS Marks only so long as the Adviser serves as investment adviser to the Trust and the Fund. The Trust agrees that if the Adviser for any reason no longer serves as investment adviser to the Fund, and the Adviser so requests, that Fund promptly shall cease to use the MFS Marks and promptly shall amend its registration statement to delete any references to the MFS Marks. Likewise, the Trust agrees that if the Adviser for any reason no longer serves as investment adviser to any Fund of the Trust, and the Adviser so requests, the Trust promptly shall cease to use the MFS Marks and promptly shall amend its Declaration of Trust to delete any references to the MFS Marks. The Trust acknowledges that the Adviser may permit other clients to use the MFS Marks in their names or other material. For purposes of this Article, the Trust shall be deemed to have taken the required action "promptly" if such action is taken within 90 days of the Adviser no longer serving as the investment adviser to the Fund of the Trust, or from the date of the Adviser's request, as the case may be.

**<u>Article 9. Duration, Termination and Amendment of this Agreement.</u>** (a) This Agreement shall become effective with respect to the Trust on the date first written above, and shall become effective with respect to a Fund, if previously approved by the shareholders of the Fund, on the Effective Date for the Fund, as set forth in Appendix A attached hereto. Thereafter, with respect to each Fund, this Agreement will remain in effect with respect to the Fund for a period of two years from the Fund's Effective Date as set forth in Appendix A, on which date it will terminate for the Fund unless its continuance is "specifically approved at least annually" (i) by the vote of a majority of the Trustees of the Trust who are not "interested persons" of the Trust or of the Adviser at a meeting specifically called for the purpose of voting on such approval, and (ii) by the Board of Trustees of the Trust, or by "vote of a majority of the outstanding voting securities" of the Fund (or by such other means as is consistent with applicable law or exemptive or other relief or guidance provided by the Securities and Exchange Commission).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) This Agreement may be terminated as to the Trust or as to a Fund at any time without the payment of any penalty by the Trustees or by "vote of a majority of the outstanding voting securities" of a Fund, or by the Adviser, in each case on not more than sixty days' nor less than thirty days' written notice to the other party. This Agreement shall automatically terminate in the event of its "assignment".

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) This Agreement may be amended with respect to a Fund only if such amendment is in writing signed by or on behalf of the Trust and the Adviser and is approved by "vote of a majority of the outstanding voting securities" of a Fund (if such shareholder approval is required by the 1940 Act).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) Any approval, renewal or amendment of this Agreement with respect to a Fund by "vote of a majority of the outstanding voting securities" of that Fund, by the Trustees of the Trust, or by a majority of the Trustees of the Trust who are not "interested persons" of the Trust or the Adviser, shall be effective to approve, renew or amend the Agreement with respect to that Fund notwithstanding (i) that the approval, renewal or amendment has not been

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so approved as to any other Fund, or (ii) that the approval, renewal or amendment has not been approved by the vote of a majority of the outstanding voting securities of the Trust as a whole.

**<u>Article 10. Scope of Trust's Obligations.</u>** A copy of the Trust's Declaration of Trust is on file with the Secretary of State of The Commonwealth of Massachusetts. The Adviser acknowledges that the obligations of or arising out of this Agreement are not binding upon any of the Trust's Trustees, officers, employees, agents or shareholders individually, but are binding solely upon the assets and property of the Trust. If this Agreement is executed by the Trust on behalf of one or more Funds, the Adviser further acknowledges that the assets and liabilities of each Fund are separate and distinct and that the obligations of or arising out of this Agreement concerning a Fund are binding solely upon the assets or property of the Fund and not upon the assets or property of any other Fund, and that this Agreement and any obligations hereunder be interpreted to as to be several and neither joint nor joint and several as between or among individual Funds.

**<u>Article 11. Definitions and Interpretations.</u>** The terms "specifically approved at least annually," "vote of a majority of the outstanding voting securities," "assignment," "affiliated person," and "interested person," when used in this Agreement, shall have the respective meanings specified, and shall be construed in a manner consistent with, the 1940 Act and the rules and regulations promulgated thereunder. Any question of interpretation of any term or provision of this Agreement having a counterpart in or otherwise derived from a term or provision of the 1940 Act, the Advisers Act, the Securities Act of 1933, or the Securities Exchange Act of 1934 and in each case the rules and regulations promulgated thereunder (collectively, the "Federal Securities Acts") shall be resolved by reference to such term or provision of the Federal Securities Acts and to interpretations thereof, if any, by United States federal courts or, in the absence of any controlling decisions of any such court, by rules or regulations of the Securities and Exchange Commission. Where the effect of a requirement of the Federal Securities Acts reflected in any provision of this Agreement is revised by rule or regulation of the Securities and Exchange Commission, such provisions shall be deemed to incorporate the effect of such rule or regulation.

**<u>Article 12. Record Keeping.</u>** The Adviser will, at its expense, maintain records in a form acceptable to the Trust and in compliance with the rules and regulations of the Securities and Exchange Commission, including but not limited to records required to be maintained by Section 31(a) of the 1940 Act and the rules thereunder, which at all times will be the property of the Trust and will be available for inspection and use by the Trust.

**<u>Article 13. Miscellaneous.</u>** (a) This Agreement contains the entire understanding and agreement of the parties with respect to the subject matter hereof.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) This Agreement does not and is not intended to confer any rights or remedies upon any person other than the parties to this Agreement; there are no third-party beneficiaries of this Agreement, including but not limited to shareholders of the Fund.

(c) Headings in this Agreement are for ease of reference only and shall not constitute a part of the Agreement.

(d) Should any portion of this Agreement for any reason be held void in law or equity, the remainder of the Agreement shall be construed to the extent possible as if such voided portion had never been contained herein.

(e) This Agreement shall be governed by the laws of the Commonwealth of Massachusetts, without giving effect to the choice of laws provisions thereof, except that questions of interpretation shall be resolved in accordance with the provisions of Article 11 above.

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(f) Any legal action or proceeding with respect to this Agreement or the services provided hereunder or for recognition and enforcement of any judgment in respect hereof brought by the other party hereto or its successors or assigns must be brought and determined in the state courts of the Commonwealth of Massachusetts or the United States District Court for the District of Massachusetts (and may not be brought or determined in any other forum or jurisdiction), and each party hereto submits with regard to any action or proceeding for itself and in respect of its property, generally and unconditionally, to the sole and exclusive jurisdiction of the aforesaid courts.

*[Remainder of Page Intentionally Left Blank]*

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IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed and delivered in their names and on their behalf by the undersigned officers thereunto duly authorized, all as of the day and year first above written. The undersigned officer of the Trust has executed this Agreement not individually, but as an officer under the Declaration and the obligations of this Agreement are not binding upon any of the Trustees, officers or shareholders of the Fund, individually, but bind only the trust estate.

MFS ACTIVE EXCHANGE TRADED FUNDS TRUST,

on behalf of its series set forth in

Appendix A attached hereto

By:_______________________

Name:

Title:

MASSACHUSETTS FINANCIAL SERVICES COMPANY

By:_______________________

Name:

Title:

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#### Appendix A

#### Fund and Effective Date

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| | |
|:---|:---|
| **<u>Fund</u>** | **<u>Effective Date</u>** |
| MFS Active International Value ETF  | TBD |
| MFS Blended Research Small-Mid Cap ETF | TBD |

---

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#### Appendix B

#### Compensation to the Adviser
The investment management fee payable by the Fund shall be computed daily and paid monthly at the annual rate equal to that Fund's average daily net assets for its then current fiscal year specified below:

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| | |
|:---|:---|
| **<u>Fund</u>** | **<u>Rate</u>** |
| MFS Active International Large Cap Value ETF  | TBD% |
| MFS Blended Research Small-Mid Cap ETF | TBD% |

---

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#### Appendix C

#### Administrative Services
&nbsp;&nbsp;&nbsp;&nbsp;**I. <u>SUPERVISORY SERVICES</u>**

The Adviser shall supervise and coordinate matters relating to the operation of the Fund, including any necessary coordination among the custodian, transfer agent, distributor, accountants, attorneys, and other parties performing services or operational functions for the Fund.

&nbsp;&nbsp;&nbsp;&nbsp;**II. <u>ADMINISTRATIVE SERVICES</u>**

**The administrative services the Adviser shall provide or procure at the Adviser's expense (unless otherwise agreed to by the parties) shall include the following to the extent that any such services are not otherwise provided to the Fund pursuant to a separate administration agreement, distribution agreement, custody agreement, transfer agency agreement or other similar agreement:**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· Coordinate and prepare Fund financial statements and ensure that all statements and disclosures are in accordance with generally accepted accounting principles and that disclosures meet current regulatory and/or accounting requirements and arrange for the filing of periodic regulatory reports as required by applicable law.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· Prepare and arrange for the filing of such registration statements, charter documents, service contracts and other documents with the Securities and Exchange Commission and other federal and state or other regulatory authorities, securities exchanges and self-regulatory organizations as may be required to register or maintain the registration of the shares of the Fund, list or maintain the listing of shares of the Fund for trading on one or more securities exchanges ("Listing Exchange") and qualify the Fund to do business or as otherwise required by applicable law.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· Oversee the computation of the net asset value of the Fund as calculated by service providers of the Fund and coordinate and supervise the daily pricing and valuation of the Fund's investments.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· Facilitate the preparation and filing of federal, state and foreign tax reports and monitor the Fund's compliance with applicable tax laws and regulations.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· Supervise the Fund's compliance with recordkeeping requirements under applicable federal and state laws and maintain books and records for the Fund in accordance with such laws.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· Assist the Fund in conducting meetings of the Fund's shareholders if and when called by the Fund's Board or otherwise required by applicable law or regulation.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· Arrange for the preparation, printing, mailing, and/or web-posting of any documents or written materials required to be prepared by or on behalf of the Fund including, without limitation, stock certificates, summary prospectuses, prospectuses, shareholder reports, shareholder notices, financial statements, proxy statements, notices of distributions to shareholders, and reports to governmental officers and commissions.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· As the Trustees may reasonably request or deem appropriate, make reports and recommendations to the Trustees on, the performance of administrative and professional services rendered to the Fund by others, including the custodian, accountants, attorneys, underwriters, brokers and dealers, insurers, banks, transfer agents and dividend disbursing agents and such other persons in any such other capacity deemed necessary or desirable by the Trustees.

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· Take any such other actions as may be required by applicable law, including without limitation the rules and regulations of the Securities and Exchange Commission, including under the 1940 Act with respect to operations as an "exchange-traded fund," the Commodity Futures Trading Commission, any Listing Exchange(s), state securities commissions and other governmental and regulatory agencies.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;· Provide any other administrative service necessary for the operation and administration of the Fund as may be determined by the Adviser.

Notwithstanding the foregoing, the Adviser may procure or delegate provision of these services to third parties entirely or with respect to particular classes of shares of the Fund or particular shareholders that have relationships with other financial intermediaries that perform similar services.

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## Ex-99.E

#### EXHIBIT NO. 99.(e) 2
As of ___________

EXHIBIT A TO

DISTRIBUTION AGREEMENT BETWEEN

MFS FUND DISTRIBUTORS, INC. AND

MFS ACTIVE EXCHANGE TRADED FUNDS TRUST

DATED SEPTEMBER 6, 2024 (the "Agreement")

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| | |
|:---|:---|
| &nbsp;&nbsp;MFS Active Exchange Traded Funds Trust | &nbsp;&nbsp;MFS Active Core Plus Bond ETF MFS Active Growth ETF<br>MFS Active Intermediate Muni Bond ETF MFS Active International ETF<br>MFS Active International Value ETF<br>MFS Active Mid Cap ETF<br>MFS Active Value ETF<br>MFS Blended Research Core Equity ETF<br>MFS Blended Research Emerging Markets Equity ETF MFS Blended Research International Equity ETF<br>MFS Blended Research Small-Mid Cap ETF |

---

**IN WITNESS WHEREOF,** each of the parties has caused this <u>Exhibit</u> <u>A</u> to be executed in its name and behalf on the day and year first above written.

MFS ACTIVE EXCHANGE TRADED FUNDS TRUST

On its own behalf and on behalf of each of its series

By:________________________

Name:

Title:

MFS FUND DISTRIBUTORS, INC.

By:________________________

Name:

Title:

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## Ex-99.H

**EXHIBIT NO. 99.**(h) 2<br>

May 19, 2026

State Street Bank and Trust Company

One Congress Street

Boston, MA 02114

Attention: Eruch Mody

<u>Re: Addition of MFS Active International Value ETF and MFS Blended Research Small-Mid Cap ETF (each a "Portfolio" and collectively the "Portfolios") to the Transfer Agency and Service Agreement between MFS Active Exchange Traded Funds Trust and State Street Bank and Trust Company</u> 

To Whom It May Concern:

In accordance with Section 11 ("Additional Portfolios") of the Transfer Agency and Service Agreement dated as of September 6, 2024, as amended, modified, or supplemented from time to time (the "Agreement"), by and between MFS Active Exchange Traded Funds Trust (the "Trust"), and State Street Bank and Trust Company ("State Street"), the Trust hereby notifies State Street that it desires to have State Street act as Transfer Agent for the additional Portfolios identified above under the terms of the Agreement, and that Schedule A to the Agreement is hereby amended and restated as set forth on Appendix A attached hereto. In connection with such request, the Trust hereby confirms, as of the date hereof, its representations and warranties set forth in Section 4 of the Agreement to the extent applicable to each additional Portfolio.&nbsp;&nbsp;&nbsp;&nbsp;

Please indicate your acceptance of and agreement to the foregoing by executing this letter agreement and returning a copy to the Trust.

Sincerely,

#### MFS ACTIVE EXCHANGE TRADED FUNDS TRUST
On behalf of:

MFS Active International Value ETF

MFS Blended Research Small-Mid Cap ETF

By:<u>/s/DAVID L. DILORENZO</u>

Name: David L. DiLorenzo

Title: President

#### Agreed and Accepted:

#### STATE STREET BANK AND TRUST COMPANY
By:<u>/s/ERUCH MODY</u>

Name: Eruch Mody

Title: Senior Vice President

------

Effective Date: May 19, 2026

<u>Appendix</u> <u>A</u>

LIST OF TRUSTS/PORTFOLIOS

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| |
|:---|
| **MFS ACTIVE EXCHANGE TRADED FUNDS TRUST**<br>MFS Active Core Plus Bond ETF |
| MFS Active Growth ETF |
| MFS Active Intermediate Muni Bond ETF |
| MFS Active International ETF |
| MFS Active International Value ETF<br>MFS Active Mid Cap ETF |
| MFS Active Value ETF |
| MFS Blended Research Core Equity ETF |
| MFS Blended Research Emerging Markets Equity ETF |
| MFS Blended Research International Equity ETF |
| MFS Blended Research Small-Mid Cap ETF |

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## Ex-99.I

**EXHIBIT NO. 99.(i)**

![](img_68eb8c565e3c4f12.jpg)

**111 Huntington Ave., Boston, Massachusetts 02199**

**Phone 617-954-5000**

Brian Langenfeld

Vice President and Managing Counsel

Legal

May 18, 2026

MFS Active Exchange Traded Funds Trust

111 Huntington Avenue

Boston, MA 02199

Ladies and Gentlemen:

I am a Vice President and Managing Counsel of Massachusetts Financial Services Company, which serves as investment adviser to MFS Active Exchange Traded Funds Trust (the "Trust").

I am admitted to practice law in The Commonwealth of Massachusetts. The Trust was created under a written Declaration of Trust dated February 26, 2024, as amended from time to time, and executed and delivered in Boston, Massachusetts, as amended ("the Declaration of Trust"). The beneficial interest thereunder is represented by transferable shares without par value. The Trustees have the powers set forth in the Declaration of Trust, subject to the terms, provisions and conditions therein provided.

I am of the opinion that the legal requirements have been complied with in the creation of the Trust, and that said Declaration of Trust is legal and valid.

Under Article III, Section 3.4 and Article VI, Section 6.4 of the Declaration of Trust, the Trustees are empowered, in their discretion, from time to time to issue shares of the Trust for such amount and type of consideration, at such time or times and on such terms as the Trustees may deem best. Under Article VI, Section 6.1, it is provided that the number of shares of beneficial interest authorized to be issued under the Declaration of Trust is unlimited.

------

MFS Active Exchange Traded Funds Trust

May 18, 2026

Article X of the Trust's Amended and Restated By-Laws, dated January 1, 2002, as revised from time to time, provides that shares of beneficial interest of the Trust may not be sold at a price less than the net asset value thereof, as defined in the Trust's By-Laws, determined by or on behalf of the Trustees next after the sale is made or at some later time after such sale.

The Trust has registered an indefinite number of Shares under the Securities Act of 1933.

I am of the opinion that all necessary Trust action precedent to the issue of all the authorized but unissued Shares of the Trust covered by the Registration Statement and any amendments thereto has been duly taken, and that all such Shares may legally and validly be issued, and when sold, will be fully paid and non-assessable, assuming the receipt by the Trust of the consideration therefor in accordance with the terms of Article X of the Trust's By-Laws as described above, except as described below. I express no opinion as to compliance with the Securities Act of 1933, the Investment Company Act of 1940, or applicable state "Blue Sky" or securities laws in connection with the sale of the Shares.

The Trust is an entity of the type commonly known as a "Massachusetts business trust." Under Massachusetts law, shareholders could, under certain circumstances, be held personally liable for the obligations of the Trust. However, the Declaration of Trust disclaims shareholder liability for acts or obligations of the Trust and requires that notice of such disclaimer be given in each agreement, obligation, or instrument entered into or executed by the Trust or the Trustees. The Declaration of Trust provides for indemnification out of the Trust property for all loss and expense of any shareholder held personally liable for the obligations of the Trust. Thus, the risk of a shareholder incurring financial loss on account of shareholder liability is limited to circumstances in which the Trust itself would be unable to meet its obligations.

I consent to your filing this opinion with the Securities and Exchange Commission.

Very truly yours,

/s/BRIAN LANGENFELD

Brian Langenfeld

Vice President and Managing Counsel

BL/RS

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## Ex-99.J

#### EXHIBIT NO. 99.(j) 1
MFS Series Trust I

MFS Series Trust II

MFS Series Trust III

MFS Series Trust IV

MFS Series Trust V

MFS Series Trust VI

MFS Series Trust VII

MFS Series Trust VIII

MFS Series Trust IX

MFS Series Trust X

MFS Series Trust XI

MFS Series Trust XII

MFS Series Trust XIII

MFS Series Trust XIV

MFS Series Trust XV

MFS Series Trust XVI

MFS Series Trust XVII

Massachusetts Investors Growth Stock Fund

Massachusetts Investors Trust

MFS Municipal Series Trust

MFS Active Exchange Traded Funds Trust

MFS Variable Insurance Trust

MFS Variable Insurance Trust II

MFS Variable Insurance Trust III

MFS Charter Income Trust

MFS Government Markets Income Trust

MFS High Income Municipal Trust

MFS High Yield Municipal Trust

MFS Intermediate High Income Fund

MFS Intermediate Income Trust

MFS Investment Grade Municipal Trust

MFS Multimarket Income Trust

MFS Municipal Income Trust

(each a "Registrant")

#### POWER OF ATTORNEY
The undersigned, a Trustee of each of the above-mentioned Registrants, hereby severally constitutes and appoints Heidi W. Hardin, Christopher R. Bohane, Brian E. Langenfeld and Susan A. Pereira, and each of them singly, as true and lawful attorneys, with full power to them and each of them to sign for each of the undersigned, in the names of, and in the capacities indicated below, any Registration Statement and any and all amendments thereto and to file the same with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission for the purpose of registering the Registrant as a management investment company under the Investment Company Act of 1940 and/or the shares issued by the Registrant under the Securities Act of 1933 granting unto my said attorneys, and each of them, acting alone, full power and authority to do and perform each and every act and thing requisite or necessary or desirable to be done in the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys or any of them may lawfully do or cause to be done by virtue thereof.

IN WITNESS WHEREOF, the undersigned have hereunto set their hand on this 1<sup>st</sup> day of January, 2026.

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---

| | |
|:---|:---|
| <u>/s/</u><u>STEVEN E. BULLER</u><u>_____</u> Trustee<br>Steven E. Buller | <u>/s/</u><u>CLARENCE OTIS, JR.</u><u>____</u> Trustee<br>Clarence Otis, Jr. |
| <u>/s/</u><u>JOHN A. CAROSELLI</u><u>____</u> Trustee<br>John A. Caroselli | <u>/s/</u><u>MICHAEL W. ROBERGE</u><u>_</u> Trustee<br>Michael W. Roberge |
| <u>/s/</u><u>MAUREEN R. GOLDFARB</u><u>_</u> Trustee<br>Maureen R. Goldfarb | <u>/s/</u><u>MARYANNE L. ROEPKE</u><u>_</u> Trustee<br>Maryanne L. Roepke |
| <u>/s/</u><u>PETER D. JONES</u><u>_________</u> Trustee<br>Peter D. Jones | <u>/s/</u><u>PAULA E. SMITH</u><u>_______</u> Trustee<br>Paula E. Smith |
| <u>/s/</u><u>JOHN P. KAVANAUGH</u><u>___</u> Trustee<br>John P. Kavanaugh | <u>/s/</u><u>JAMES W. KILMAN, JR.___</u> Trustee<br>James W. Kilman, Jr. |
| <u>/s/</u><u>DARRELL A. WILLIAMS</u><u>_</u> Trustee<br>Darrell A. Williams |  |

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## Ex-99.J

#### EXHIBIT NO. 99.(j) 2
MFS Series Trust I

MFS Series Trust II

MFS Series Trust III

MFS Series Trust IV

MFS Series Trust V

MFS Series Trust VI

MFS Series Trust VII

MFS Series Trust VIII

MFS Series Trust IX

MFS Series Trust X

MFS Series Trust XI

MFS Series Trust XII

MFS Series Trust XIII

MFS Series Trust XIV

MFS Series Trust XV

MFS Series Trust XVI

MFS Series Trust XVII

MFS Active Exchange Traded Funds Trust

Massachusetts Investors Growth Stock Fund

Massachusetts Investors Trust

MFS Municipal Series Trust

MFS Variable Insurance Trust

MFS Variable Insurance Trust II

MFS Variable Insurance Trust III

MFS Charter Income Trust

MFS Government Markets Income Trust

MFS High Income Municipal Trust

MFS High Yield Municipal Trust

MFS Intermediate High Income Fund

MFS Intermediate Income Trust

MFS Investment Grade Municipal Trust

MFS Multimarket Income Trust

MFS Municipal Income Trust

(each a "Registrant")

#### POWER OF ATTORNEY
The undersigned, being the President and Principal Executive Officer, and Treasurer and Principal Financial and Accounting Officer, respectively, of each of the above-mentioned Registrants, hereby severally constitutes and appoints Heidi W. Hardin, Christopher R. Bohane, Brian E. Langenfeld and Susan A. Pereira, and each of them singly, as true and lawful attorneys, with full power to them and each of them to sign for each of the undersigned, in the names of, and in the capacities indicated below, any Registration Statement and any and all amendments thereto and to file the same with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission for the purpose of registering the Registrant as a management investment company under the Investment Company Act of 1940 and/or the shares issued by the Registrant under the Securities Act of 1933 granting unto my said

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attorneys, and each of them, acting alone, full power and authority to do and perform each and every act and thing requisite or necessary or desirable to be done in the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys or any of them may lawfully do or cause to be done by virtue thereof.

IN WITNESS WHEREOF, the undersigned have hereunto set their hand on this 1<sup>st</sup> day of January, 2025.

<u>/s/DAVID L. DILORENZO</u> President (Principal Executive Officer)

David L. DiLorenzo

<u>/s/</u><u>KASEY L. PHILLIPS</u> Principal Financial and Accounting Officer

Kasey L. Phillips

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## Ex-99.M

#### EXHIBIT NO. 99.m (2)

#### MFS ACTIVE EXCHANGE TRADED FUNDS TRUST

#### DISTRIBUTION AND SERVICE PLAN PURSUANT TO RULE 12b-1 OF THE 1940 ACT

#### EFFECTIVE SEPTEMBER 6, 2024
**WHEREAS**, the MFS Active Exchange Traded Funds Trust (the "Trust") is an open-end investment management company registered as such under the Investment Company Act of 1940, as amended (the "1940 Act"); and

**WHEREAS**, the Trust offers its shares of beneficial interest in separate series (each a "Fund"); and

**WHEREAS**, the Board of Trustees of the Trust, including the Trustees who are not interested persons of the Trust and who have no direct or indirect financial interest in the operation of the Rule 12b-1 plan provided for herein (the "Plan") or any agreements to the Plan (the "Independent Trustees"), have determined in the exercise of their reasonable business judgment and in light of their fiduciary duties under the 1940 Act and state law that there is a reasonable likelihood that this Plan will benefit each of the Funds identified on Schedule A attached hereto, and the shareholders thereof; and

**WHEREAS**, the Board of Trustees of the Trust, in considering whether each Fund should adopt this Plan, has evaluated such information as it deemed necessary to an informed determination as to whether this Plan should be adopted and has considered such pertinent factors as it deemed necessary to form the basis for a decision to use assets of a Fund for such purposes, and has determined that there is a reasonable likelihood that the adoption of this Plan will benefit the Fund and its shareholders; and

**WHEREAS**, the Trust has entered into a distribution agreement (the "Distribution Agreement"), in a form approved by the Board of Trustees of the Trust in the manner specified in Rule 12b-1, with MFS Fund Distributors, Inc. (the "Distributor"), a Delaware corporation, as principal underwriter and general distributor of creation units of shares of each Fund;

**NOW THEREFORE**, in consideration of the foregoing, the Trust's Plan is hereby adopted as follows:

**SECTION 1.** The Trust is authorized to pay a distribution and/or service fee (the "12b-1 Fee") to the Distributor for services rendered and expenses borne in connection with the distribution and servicing of creation units of shares of the of the Trust in accordance with the Distribution Agreement, at an annual rate with respect to each Fund not to exceed 0.25% of the average daily net assets attributable to the Fund's shares. Subject to such limit and subject to the provisions of Section 8 hereof, the 12b-1 Fee shall be as approved from time to time by (a) the Trustees of the Trust and (b) the Independent Trustees, and may be paid in respect of services rendered and expenses borne in the past in connection with the

Fund's shares as to which no 12b-1 Fee was paid on account of such limitation. The Trust is not obligated to pay any distribution and/or service expense in excess of the 12b-1 Fee described in this Section 1. The 12b-1 Fee shall be computed on the basis of the net assets of the Fund for which the Plan is in effect (or share class thereof as applicable). The 12b-1 Fee shall be calculated and accrued daily and paid quarterly or at such other intervals as the Trustees shall determine.

**SECTION 2.** Services and expenses for which the Distributor may be compensated include, without limitation:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) compensation to and expenses (including overhead, travel and telephone services) of the

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Distributor and any of its affiliates and any of their respective officers, sales representatives and employees who engage in or support the distribution of creation units of shares of the Fund;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) preparing, printing and mailing of prospectuses, statements of additional information and reports for other than existing shareholders of the Fund;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) marketing and promotional services including advertising, including expenses relating to the development, preparation, printing and mailing of Trust advertisements, sales literature and other promotional materials describing and/or relating to the Fund;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) expenses of holding seminars and sales meetings designed to promote the distribution of the Fund;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e) providing facilities to answer questions from prospective investors about the Funds;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(f) expenses of training sales personnel regarding the Fund;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(g) complying with federal and state securities laws pertaining to the sale of shares of the Fund; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(h) such other services and obligations as are set forth in the Plan.

**SECTION 3.** The Distributor may use all or any portion of the amount received pursuant to this Plan to compensate securities dealers or other persons to the extent permitted under applicable law for providing distribution assistance, including broker-dealer and shareholder support and educational and promotional services, pursuant to agreements with the Distributor, or to pay any of the expenses associated with other activities authorized under this paragraph. The Distributor and its affiliates may make payments from their own resources for the purposes described in Section 2.

**SECTION 4.** This Plan shall not take effect until it has been approved by a majority vote (or whatever greater percentage may, from time to time, be required by Section 12(b) of the 1940 Act or the rules and regulations thereunder) of both (a) the Trustees of the Trust, and (b) the Independent Trustees cast in person at a meeting called for the purpose of voting on this Plan.

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**SECTION 5.** This Plan and any related agreements shall continue in effect for so long as such continuance is specifically approved at least annually in the manner provided for approval of this Plan in Section 4.

**SECTION 6.** Any person authorized to direct the disposition of monies paid or payable by any Fund pursuant to this Plan or any related agreement shall provide to the Trustees of the Trust, and the Trustees shall review, at least quarterly, a written report of the amounts so expended and the purposes for which such expenditures were made.

**SECTION 7.** This Plan may be terminated at any time with respect to the any Fund by vote of a majority of the Independent Trustees, or by vote of a majority of the outstanding voting securities representing that Fund.

**SECTION 8.** This Plan may not be amended to increase materially the amount of distribution and/or service fees permitted to be paid by a Fund pursuant to Section 1 hereof without approval by a vote of at least a majority of the outstanding voting securities of that Fund, and all material amendments to this Plan shall be approved in the manner provided for approval of this Plan in Section 4.

**SECTION 9.** While this Plan is in effect, the selection and nomination of the Independent Trustees will be committed to the discretion of the Independent Trustees.

**SECTION 10.** For the purposes of this Plan, the terms "interested persons", "majority of the outstanding voting securities" and "assignment" are used as defined in the 1940 Act or the rules and regulations adopted thereunder. In addition, for purposes of determining the fees payable hereunder, (i) the value of a Fund's net assets shall be computed in the manner specified in the Fund's then-current prospectus and statement of additional information for computation of the net asset value of shares of the Fund and (ii) the net asset value per share of a particular class shall reflect any plan adopted under Rule 18f-3 under the 1940 Act.

**SECTION 11.** The Trust shall preserve copies of this Plan, and each agreement related hereto and each report referred to in Section 6 hereof (collectively, the "Records") as required by the 1940 Act and the applicable rules thereunder.

**SECTION 12.** This Plan shall be construed in accordance with the laws of The Commonwealth of Massachusetts and the applicable provisions of the 1940 Act.

**SECTION 13.** If any provision of this Plan shall be held or made invalid by a court decision, statute, rule or otherwise, the remainder of the Plan shall not be affected thereby. The provisions of this Plan are severable with respect to each class of shares offered by a Fund and with respect to each Fund.

**SECTION 14.** Nothing herein contained shall be deemed to require the Trust to take any action contrary to its Declaration of Trust or By-laws or any applicable statutory or regulatory requirement to which it is subject or by which it is bound, or to relieve or deprive the Board of Trustees of the responsibility for and control of the conduct of the affairs of a Fund.

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**SECTION 15.** It is acknowledged that the obligations of or arising out of this Plan are not binding upon any of the Trust's trustees, officers, employees, agents or shareholders individually, but are binding solely upon the assets and property of the Trust in accordance with its proportionate interest hereunder. It is further acknowledged that the assets and liabilities of each Fund are separate and distinct and that the obligations of or arising out of this Plan are binding solely upon the assets or property of the Fund on whose behalf the Trust has adopted this Plan. It is also acknowledged that the obligations of each Fund hereunder shall be several and not joint, in accordance with its proportionate interest hereunder, and no Fund shall be responsible for the obligations of another Fund.

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AS OF May 26, 2026

<u>SCHEDULE</u> <u>A</u>

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| |
|:---|
| MFS Active Core Plus Bond ETF |
| MFS Active Growth ETF |
| MFS Active Intermediate Muni Bond ETF |
| MFS Active International ETF |
| MFS Active International Value ETF |
| MFS Active Mid Cap ETF |
| MFS Active Value ETF |
| MFS Blended Research Core Equity ETF |
| MFS Blended Research Emerging Markets Equity ETF |
| MFS Blended Research International Equity ETF |
| MFS Blended Research Small-Mid Cap ETF |

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