# EDGAR Filing Document

**Accession Number:** 0000806564
**File Stem:** 0001133228-23-000874
**Filing Date:** 2023-2
**Character Count:** 810602
**Document Hash:** deaa7c29edb7ebcf2797ba35ebf3d8cd
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001133228-23-000874.hdr.sgml**: 20230228

**ACCESSION NUMBER**: 0001133228-23-000874

**CONFORMED SUBMISSION TYPE**: 485BPOS

**PUBLIC DOCUMENT COUNT**: 24

**FILED AS OF DATE**: 20230228

**DATE AS OF CHANGE**: 20230228

**EFFECTIVENESS DATE**: 20230228

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MORGAN STANLEY MORTGAGE SECURITIES TRUST
- **CENTRAL INDEX KEY:** 0000806564
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** 485BPOS
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-04917
- **FILM NUMBER:** 23687339

**BUSINESS ADDRESS:**
- **STREET 1:** 522 FIFTH AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10036
- **BUSINESS PHONE:** 800-869-6397

**MAIL ADDRESS:**
- **STREET 1:** 522 FIFTH AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10036

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MORGAN STANLEY FEDERAL SECURITIES TRUST
- **DATE OF NAME CHANGE:** 20010618

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MORGAN STANLEY DEAN WITTER FEDERAL SECURITIES TRUST
- **DATE OF NAME CHANGE:** 19980622

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** WITTER DEAN FEDERAL SECURITIES TRUST
- **DATE OF NAME CHANGE:** 19930210
**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MORGAN STANLEY MORTGAGE SECURITIES TRUST
- **CENTRAL INDEX KEY:** 0000806564
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** 485BPOS
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-10363
- **FILM NUMBER:** 23687338

**BUSINESS ADDRESS:**
- **STREET 1:** 522 FIFTH AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10036
- **BUSINESS PHONE:** 800-869-6397

**MAIL ADDRESS:**
- **STREET 1:** 522 FIFTH AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10036

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MORGAN STANLEY FEDERAL SECURITIES TRUST
- **DATE OF NAME CHANGE:** 20010618

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MORGAN STANLEY DEAN WITTER FEDERAL SECURITIES TRUST
- **DATE OF NAME CHANGE:** 19980622

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** WITTER DEAN FEDERAL SECURITIES TRUST
- **DATE OF NAME CHANGE:** 19930210

## Series and Classes Contracts Data

### Morgan Stanley Mortgage Securities Trust (Series ID: S000002467)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006611 | A            | MTGAX           |
| C000006613 | L            | MTGCX           |
| C000006614 | I            | MTGDX           |
| C000155975 | Class C      | MSMTX           |
| C000198813 | Class R6     | MORGX           |

?xml version='1.0' encoding='ASCII'? 2022-07-14MSMortgageSecuritiesTrust_485B_PSP_February2023

**As filed with the Securities and Exchange Commission on February 28, 2023**

**Registration Nos.: 33-10363**

**811-4917**

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**WASHINGTON, D.C. 20549**

**FORM N-1A**

---

| | |
|:---|:---|
| **REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933** | ☒ |
| **Pre-Effective Amendment No.** | ☐ |
| **Post-Effective Amendment No. 88** | ☒ |
| **and/or** |  |
| **REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940** | ☒ |
| **Amendment No. 89** | ☒ |

---

**Morgan Stanley Mortgage Securities Trust**

**(A Massachusetts business trust)**

**(Exact Name of Registrant as Specified in Charter)**

**522 Fifth Avenue**

**New York, New York 10036**

**(Address of Principal Executive Office)**

**Registrant's Telephone Number, Including Area Code: (800) 869-6397**

**Mary E. Mullin, Esq. 1633 Broadway**

**New York, New York 10019**

**(Name and Address of Agent for Service)**

**Copy to:**

---

| | |
|:---|:---|
| **Mark Parise, Esq.** | **Allison Fumai, Esq.** |
| **Perkins Coie LLP** | **Dechert LLP** |
| **1155 Avenue of the Americas** | **1095 Avenue of the Americas** |
| **22<sup>nd</sup> Floor** | **New York, New York 10036** |
| **New York, New York 10036** |  |

---

**Approximate Date of Proposed Public Offering:**

As soon as practicable after this Post-Effective Amendment becomes effective.

**It is proposed that this filing will become effective (check appropriate box):**

☒ Immediately upon filing pursuant to paragraph (b)

☐ On (date) pursuant to paragraph (b)

☐ 60 days after filing pursuant to paragraph (a)(1)

☐ On (date) pursuant to paragraph (a)(1)

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

☐ On (date) pursuant to paragraph (a)(2) of Rule 485.

**Amending the Prospectus and Updating Financial Statements**

If appropriate, check the following box:

☐ This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

![image](pr15548img002.jpg)

**Morgan Stanley**

**Mortgage Securities Trust**

------

**Prospectus** \| February 28, 2023

---

| | |
|:---|:---|
| **Share Class** | **Ticker Symbol** |
| Class A | MTGAX |
| Class L | MTGCX |
| Class I | MTGDX |
| Class C | MSMTX |
| Class R6 | MORGX |

---

This Prospectus contains important information about the Fund. Please read it carefully and keep it for future reference.

![image](pr15548img001.jpg)

The Securities and Exchange Commission ("SEC") has not approved or disapproved these securities or passed upon the adequacy of this Prospectus. Any representation to the contrary is a criminal offense.

An investment in the Fund is not a bank deposit and is not insured by the Federal Deposit Insurance Corporation or any other government agency. An investment in the Fund involves investment risks, and you may lose money in the Fund.

FDLPRO 2/23

------

**Table of Contents**

---

| | |
|:---|:---|
|  | **Page** |
| [**Fund Summary**](#ref_chapter_2_15548)  | 1 |
| [Investment Objective](#ref_chapter_2-sect1_1_15548)  | 1 |
| [Fees and Expenses](#ref_chapter_2-sect1_2_15548)  | 1 |
| [Portfolio Turnover](#ref_chapter_2-sect1_3_15548)  | 2 |
| [Principal Investment Strategies](#ref_chapter_2-sect1_4_15548)  | 2 |
| [Principal Risks](#ref_chapter_2-sect1_5_15548)  | 3 |
| [Past Performance](#ref_chapter_2-sect1_6_15548)  | 7 |
| [Fund Management](#ref_chapter_2-sect1_7_15548)  | 8 |
| [Purchase and Sale of Fund Shares](#ref_chapter_2-sect1_8_15548)  | 8 |
| [Tax Information](#ref_chapter_2-sect1_9_15548)  | 8 |
| [Payments to Broker-Dealers and Other Financial Intermediaries](#ref_chapter_2-sect1_10_15548)  | 8 |
| [**Fund Details**](#ref_chapter_3_15548)  | 10 |
| [Additional Information about the Fund's Investment Objective, Strategies and Risks](#ref_chapter_3-sect1_1_15548)  | 10 |
| [Portfolio Holdings](#ref_chapter_3-sect1_2_15548)  | 23 |
| [Fund Management](#ref_chapter_3-sect1_3_15548)  | 23 |
| [**Shareholder Information**](#ref_chapter_4_15548)  | 25 |
| [Pricing Fund Shares](#ref_chapter_4-sect1_1_15548)  | 25 |
| [How to Buy Shares](#ref_chapter_4-sect1_2_15548)  | 25 |
| [How to Exchange Shares](#ref_chapter_4-sect1_3_15548)  | 28 |
| [How to Sell Shares](#ref_chapter_4-sect1_4_15548)  | 29 |
| [Distributions](#ref_chapter_4-sect1_5_15548)  | 31 |
| [Frequent Purchases and Redemptions of Fund Shares](#ref_chapter_4-sect1_6_15548)  | 32 |
| [Taxes](#ref_chapter_4-sect1_7_15548)  | 33 |
| [Share Class Arrangements](#ref_chapter_4-sect1_8_15548)  | 34 |
| [Potential Conflicts of Interest](#ref_chapter_4-sect1_9_15548)  | 40 |
| [**Financial Highlights**](#ref_chapter_5_15548)  | 42 |
| [**Appendix A**](#ref_chapter_6_15548)  | 48 |

---

------

Morgan Stanley Prospectus \| **Fund Summary**

Mortgage Securities Trust

**Investment Objective**

Morgan Stanley Mortgage Securities Trust (the "Fund") seeks a high level of current income.

**Fees and Expenses**

The table below describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. **You may pay fees** **other than the fees and expenses of the Fund, such as brokerage commissions and other fees charged by financial** **intermediaries, which are not reflected in the tables and examples below.**

For purchases of Class A shares, you may qualify for a sales charge discount if the cumulative net asset value per share ("NAV") of Class A shares of the Fund being purchased in a single transaction, together with the NAV of any Class A, Class L and Class C shares of the Fund already held in Related Accounts (as defined in the section of the Prospectus entitled "Shareholder Information—Share Class Arrangements") as of the date of the transaction as well as Class A, Class L and Class C shares of any other Morgan Stanley Multi-Class Fund excluding Morgan Stanley Institutional Fund Trust Short Duration Income, Ultra-Short Income and Ultra-Short Municipal Income Portfolios (as defined in the section of the Prospectus entitled "Shareholder Information—How to Exchange Shares—Permissible Fund Exchanges") and including shares of Morgan Stanley Money Market Funds (as defined in the section of the Prospectus entitled "Shareholder Information—How to Exchange Shares—Permissible Fund Exchanges") that you acquired in an exchange of Class A, Class L or Class C shares of the Fund or Class A, Class L or Class C shares of another Morgan Stanley Multi-Class Fund excluding Morgan Stanley Institutional Fund Trust Short Duration Income, Ultra-Short Income and Ultra-Short Municipal Income Portfolios already held in Related Accounts as of the date of the transaction, amounts to $100,000 or more. More information about this combined purchase discount and other discounts is available from your financial intermediary and on page 33 of the Prospectus in the section entitled "Shareholder Information—Share Class Arrangements" and in the section of the Fund's Statement of Additional Information ("SAI") entitled "Purchase, Redemption and Pricing of Shares." In addition, Appendix A attached to the Prospectus contains more information regarding financial intermediary-specific sales charge waivers and discounts.

Class I shares may be available on brokerage platforms of firms that have agreements with the Fund's principal underwriter permitting such firms to (i) offer Class I shares solely when acting as an agent for the investor and (ii) impose on an investor transacting in Class I shares through such platforms a commission and/or other forms of compensation to the broker. Shares of the Fund are available in other share classes that have different fees and expenses.

**Shareholder Fees** (fees paid directly from your investment)

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Class A** | **Class L** | **Class I** | **Class C** | **Class R6** |
| Maximum sales charge (load) imposed on purchases (as a percentage of offering price) | 3.25% |  |  |  |  |
| Maximum deferred sales charge (load) (as a percentage based on the lesser of the offering price or NAV at redemption) | None<sup>1</sup> |  |  | 1.00%<sup>2</sup> |  |

---

**Annual Fund Operating Expenses** (expenses that you pay each year as a percentage of the value of your investment)

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Class A** | **Class L** | **Class I** | **Class C** | **Class R6** |
| Advisory Fee | 0.47% | 0.47% | 0.47% | 0.47% | 0.47% |
| Distribution and/or Shareholder Service (12b-1) Fee | 0.25% | 0.50% |  | 1.00% |  |
| Other Expenses | 0.47% | 0.70% | 0.44% | 0.51% | 19.76% |
| Total Annual Fund Operating Expenses<sup>3</sup>  | 1.19% | 1.67% | 0.91% | 1.98% | 20.23% |
| Fee Waiver and/or Expense Reimbursement<sup>3</sup>  | 0.19% | 0.37% | 0.21% | 0.18% | 19.58% |
| Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement<sup>3</sup>  | 1.00% | 1.30% | 0.70% | 1.80% | 0.65% |

---

**Example**

The example below is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.

The example assumes that you invest $10,000 in the Fund, your investment has a 5% return each year and that the Fund's operating expenses remain the same (except that the example incorporates the fee waiver and/or expense reimbursement arrangement for only the first year). After eight years, Class C shares of the Fund generally will convert automatically to Class A shares of the Fund. The example for Class C shares reflects the conversion to Class A shares after eight years. Please refer to the section of the Prospectus entitled "Shareholder Information—Conversion Features" for more information. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

**1**

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[Back To **Table of Contents**](#TOC_15548)

Morgan Stanley Prospectus \| **Fund Summary**

Mortgage Securities Trust (Con't)

---

| | | | | |
|:---|:---|:---|:---|:---|
| **If You SOLD Your Shares**  | **If You SOLD Your Shares**  | **If You SOLD Your Shares**  | **If You SOLD Your Shares**  | **If You SOLD Your Shares**  |
|  | **1 Year** | **3 Years** | **5 Years** | **10 Years** |
| Class A | $424  | $672 | $940 | $1705 |
| Class L | $132 | $490 | $873 | $1945 |
| Class I | $72 | $269 | $483 | $1100 |
| Class C | $283 | $604 | $1051 | $2087  |
| Class R6 | $66 | $3670  | $6259  | $9977 |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
| **If You HELD Your Shares**  | **If You HELD Your Shares**  | **If You HELD Your Shares**  | **If You HELD Your Shares**  | **If You HELD Your Shares**  |
|  | **1 Year** | **3 Years** | **5 Years** | **10 Years** |
| Class A | $424  | $672 | $940 | $1705 |
| Class L | $132 | $490 | $873 | $1945 |
| Class I | $72 | $269 | $483 | $1100 |
| Class C | $183 | $604 | $1051 | $2087  |
| Class R6 | $66 | $3670  | $6259  | $9977 |

---

---

| | |
|:---|:---|
| 1 | Investments in Class A shares that are not subject to any sales charges at the time of purchase are subject to a contingent deferred sales charge ("CDSC") of 0.75% that will be imposed if you sell your shares within 12 months after purchase, except for certain specific circumstances. See "Shareholder Information—Share Class Arrangements" for further information about the CDSC waiver categories. |

---

2 The Class C CDSC is only applicable if you sell your shares within one year after the last day of the month of purchase. See "Shareholder Information—Share Class Arrangements" for a complete discussion of the CDSC.

---

| | |
|:---|:---|
| 3 | The Fund's "Adviser" and "Administrator," Morgan Stanley Investment Management Inc., has agreed to reduce its advisory fee, its administration fee and/or reimburse the Fund so that Total Annual Fund Operating Expenses, excluding acquired fund fees and expenses (as applicable), certain investment related expenses, taxes, interest and other extraordinary expenses (including litigation), will not exceed 1.00% for Class A, 1.30% for Class L, 0.70% for Class I, 1.80% for Class C and 0.65% for Class R6. The fee waivers and/or expense reimbursements will continue for at least one year from the date of this Prospectus or until such time as the Fund's Board of Trustees acts to discontinue all or a portion of such waivers and/or reimbursements when it deems such action is appropriate. |

---

**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 Fund shares are held in a taxable account. These costs, which are not reflected in Total Annual Fund Operating Expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 334% of the average value of its portfolio.

**Principal Investment Strategies**

The Fund normally invests at least 80% of its assets in mortgage-related securities. This policy may be changed without shareholder approval; however, you would be notified upon 60 days' notice in writing of any changes. These mortgage-related securities may include mortgage-backed securities such as mortgage pass-through securities, collateralized mortgage obligations ("CMOs"), stripped mortgage-backed securities ("SMBS"), commercial mortgage-backed securities ("CMBS") and inverse floating rate obligations ("inverse floaters"). The mortgage-backed securities in which the Fund invests may be issued or guaranteed by the U.S. Government, its agencies or instrumentalities or may be offered by non-governmental issuers, such as commercial banks, savings and loan institutions, private mortgage insurance companies, mortgage bankers and other secondary market issuers. The Fund is not limited as to the maturities (when a debt security provides its final payment) or types of mortgage-backed securities in which it may invest.

In making investment decisions, the Adviser considers economic developments, interest rate levels and other factors. To identify attractive sectors and securities, the Adviser employs both top-down and bottom-up analyses. In addition, the Adviser combines quantitative and fundamental methodologies to limit the Fund's investment universe from which potential investments are then selected. In a securitized strategy, such as the strategy employed by the Fund, a majority of the Adviser's investment process is security selection related.

In addition, the Fund's investment process incorporates information about environmental, social and governance issues (also referred to as ESG) via an integrated approach alongside traditional fundamental factors within the investment team's fundamental investment analysis framework. Although ESG factors are typically considered with respect to each mortgage- and other asset backed security in which the Fund invests, other factors are also considered by the portfolio management team. No one factor or consideration is determinative in the Fund's investment process.

The Fund may invest up to 50% of its net assets in high yield securities (commonly referred to as "junk bonds"). High yield securities are fixed-income securities rated by one or more rating agencies below Baa3 by Moody's Investors Service, Inc. ("Moody's"), below BBB- by S&P Global Ratings Group, a division of S&P Global Inc. ("S&P"), below BBB- by Fitch Ratings, Inc.

**2**

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[Back To **Table of Contents**](#TOC_15548)

Morgan Stanley Prospectus \| **Fund Summary**

Mortgage Securities Trust (Con't)

("Fitch"), or the equivalent by another nationally recognized statistical rating organization ("NRSRO"), or if unrated, considered by the Adviser to be of equivalent quality.

One type of mortgage-backed security in which the Fund may invest is a mortgage pass-through security, which represents a participation interest in a pool of residential mortgage loans originated by U.S. governmental or private lenders such as banks. Mortgage pass-through securities provide for monthly payments that are a "pass-through" of the monthly interest and principal payments made by the individual borrowers on the pooled mortgage loans. CMOs are debt obligations collateralized by mortgage loans or mortgage pass-through securities (collectively "Mortgage Assets"). CMOs are issued in multiple classes and each class has a fixed or floating rate and a stated maturity or final distribution date. Certain classes will have more predictable cash flows than others. The Fund may invest in any class of CMO. SMBS are derivative multi-class mortgage-backed securities. A common type of stripped mortgage-backed security will have one class receiving some of the interest and most of the principal from the Mortgage Assets, while the other class receives 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). CMBS are generally multi-class or pass-through securities backed by a mortgage loan or a pool of mortgage loans secured by commercial property, such as industrial and warehouse properties, office buildings, retail space and shopping malls, multifamily properties and cooperative apartments. Inverse floaters are obligations which pay interest at rates that vary inversely with changes in market rates of interest. Because the interest rate paid to holders of such obligations is generally determined by subtracting a variable or floating rate from a predetermined amount, the interest rate paid to holders of such obligations will decrease as such variable or floating rate increases and increase as such variable or floating rate decreases. In addition, the Fund may invest in to-be-announced pass-through mortgage securities, which settle on a delayed delivery basis ("TBAs").

The Fund also may invest in other U.S. government securities, including, but not limited to, U.S. Treasury bills, notes and bonds, securities (including mortgage-backed securities) issued by agencies or instrumentalities of the U.S. Government which may or may not be backed by the full faith and credit of the United States, and securities issued by agencies or instrumentalities which are backed solely by the credit of the issuing agency or instrumentality.

The Fund may also invest in asset-backed securities and restricted and illiquid securities.

In addition, the Fund may invest up to 20% of its net assets in foreign securities, including U.S. dollar-denominated securities issued in the U.S. capital markets by foreign issuers, some of which are commonly known as "Yankee Bonds" and non-U.S. dollar-denominated securities, including Eurobonds.

The Fund may, but it is not required to, use derivatives and similar instruments for a variety of purposes, including hedging, risk management, portfolio management or to earn income. The Fund's use of derivatives may involve the purchase and sale of derivative instruments such as futures, options, swaps and other similar instruments and techniques. The Fund may utilize foreign currency forward exchange contracts, which are also derivatives, in connection with its investments in foreign securities. These derivative instruments will be counted toward the Fund's 80% policy discussed above to the extent they have economic characteristics similar to the securities included within that policy.

**Principal Risks**

There is no assurance that the Fund will achieve its investment objective, and you can lose money investing in this Fund. The principal risks of investing in the Fund include:

• **Credit and Interest Rate Risk.** Credit risk refers to the possibility that the issuer or guarantor of a security will be unable or unwilling or perceived to be unable or unwilling to make interest payments and/or repay the principal on its debt. In such instances, the value of the Fund could decline and the Fund could lose money. Interest rate risk refers to the decline in the value of a fixed-income security resulting from changes in the general level of interest rates. When the general level of interest rates goes up, the prices of most fixed-income securities go down. When the general level of interest rates goes down, the prices of most fixed-income securities go up. The Fund may invest in variable and floating rate loans and other variable and floating rate securities. Although these instruments are generally less sensitive to interest rate changes than fixed rate instruments, the value of variable and floating rate loans and other securities may decline if their interest rates do not rise as quickly, or as much, as general interest rates. The Fund may face a heightened level of interest rate risk in times of monetary policy change and/or uncertainty, such as when the Federal Reserve Board adjusts a quantitative easing program and/or changes rates. A changing interest rate environment increases certain risks, including the potential for periods of volatility, increased redemptions, shortened durations (i.e., prepayment risk) and extended durations (i.e., extension risk). During periods when interest rates are low , the Fund's yield (and total return) also may be low or otherwise adversely affected or the Fund may be unable to maintain positive returns . Credit ratings may not be an accurate assessment of liquidity or credit risk. Although credit ratings may not accurately reflect the true credit risk of an instrument, a change in the credit rating of an instrument or an issuer can have a rapid, adverse effect on the instrument's liquidity and make it more difficult for the Fund to sell at an advantageous price or time.

**3**

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[Back To **Table of Contents**](#TOC_15548)

Morgan Stanley Prospectus \| **Fund Summary**

Mortgage Securities Trust (Con't)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

• **Fixed-Income Securities.** Fixed-income securities are subject to the risk of the issuer's inability to meet principal and interest payments on its obligations (i.e., credit risk) and are subject to price volatility resulting from, among other things, interest rate sensitivity (i.e., interest rate risk), market perception of the creditworthiness of the issuer and general market liquidity (i.e., market risk). The Fund may face a heightened level of interest rate risk in times of monetary policy change and/or uncertainty, such as when the Federal Reserve Board adjusts a quantitative easing program and/or changes rates. A changing interest rate environment increases certain risks, including the potential for periods of volatility, increased redemptions, shortened durations (i.e., prepayment risk) and extended durations (i.e., extension risk). The Fund is not limited as to the maturities (when a debt security provides its final payment) or durations (measure of interest rate sensitivity) of the securities in which it may invest. Securities with longer durations are likely to be more sensitive to changes in interest rates, generally making them more volatile than securities with shorter durations. Lower rated fixed-income securities have greater volatility because there is less certainty that principal and interest payments will be made as scheduled. The Fund may be subject to certain liquidity risks that may result from the lack of an active market and the reduced number and capacity of traditional market participants to make a market in fixed- income securities.

• **Mortgage-Backed Securities.** Because the Fund concentrates its investments in the mortgage-backed securities industry, the Fund has greater exposure to the potential adverse economic, regulatory, political and other changes affecting such industry. Mortgage- backed securities entail prepayment risk, which generally increases during a period of falling interest rates. Rising interest rates tend to discourage refinancings, with the result that the average life and volatility of mortgage-backed securities will increase and market price will decrease. Rates of prepayment, faster or slower than expected by the Adviser, could reduce the Fund's yield, increase the volatility of the Fund and/or cause a decline in NAV. Mortgage-backed securities are also subject to extension risk, which is the risk that rising interest rates could cause mortgages or other obligations underlying the securities to be prepaid more slowly than expected, thereby lengthening the duration of such securities, increasing their sensitivity to interest rate changes and causing their prices to decline. Certain mortgage-backed securities may be more volatile and less liquid than other traditional types of debt securities. In addition, mortgage-backed securities are subject to credit risk. The Fund may invest in non-agency mortgage- backed securities offered by non-governmental issuers, such as commercial banks, savings and loan institutions, private mortgage insurance companies, mortgage bankers and other secondary market issuers. Non-agency mortgage-backed securities are not subject to the same underwriting requirements for the underlying mortgages that are applicable to those mortgage-backed securities that have a government or government-sponsored entity guarantee. As a result, the mortgage loans underlying non- agency mortgage-backed securities may, and frequently do, have less favorable collateral, credit risk or other underwriting characteristics than government or government-sponsored mortgage-backed securities and have wider variances in a number of terms including interest rate, term, size, purpose and borrower characteristics. An unexpectedly high rate of defaults on the mortgages held by a mortgage pool may adversely affect the value of a mortgage-backed security and could result in losses to the Fund. The risk of such defaults is generally higher in the case of mortgage pools that include subprime mortgages. Furthermore, mortgage-backed securities may be subject to risks associated with the assets underlying those securities, such as a decline in value. The Fund may invest a substantial portion of its assets in non-agency mortgage-backed securities rated below investment grade, which are commonly known as "junk bonds" or "high yield/high risk securities." The Fund's investments in high yield securities pose significant risks. In addition, the Fund may invest in to-be-announced pass-through mortgage securities, which settle on a delayed delivery basis ("TBAs"). Investments in mortgage-backed securities may give rise to a form of leverage (indebtedness) and may cause the Fund's portfolio turnover rate to appear higher. Leverage may cause the Fund to be more volatile than if the Fund had not been leveraged. The risks associated with mortgage-backed securities typically become elevated during periods of distressed economic, market, health and labor conditions. In particular, increased levels of unemployment, delays and delinquencies in payments of mortgage and rent obligations, and uncertainty regarding the effects and extent of government intervention with respect to mortgage payments and other economic matters may adversely affect the Fund's investments in mortgage-backed securities.

• **CMOs.** CMOs are comprised of various tranches, the expected cash flows of which have varying degrees of predictability as compared with the underlying Mortgage Assets. The less predictable the cash flow, the higher the yield and the greater the risk. In addition, if the collateral securing CMOs or any third-party guarantees is insufficient to make payments, the Fund could sustain a loss.

• **SMBS.** Investments in each class of SMBS are extremely sensitive to changes in interest rates. IOs tend to decrease in value substantially if interest rates decline and prepayment rates become more rapid. POs tend to decrease in value substantially if interest rates increase and the rate of prepayment decreases. If the Fund invests in SMBS and interest rates move in a manner not anticipated by Fund management, it is possible that the Fund could lose all or substantially all of its investment.

• **Commercial Mortgage-Backed Securities.** CMBS are subject to credit risk and prepayment risk. Although prepayment risk is present, it is of a lesser degree in the CMBS market than in the residential mortgage market; commercial real estate property loans often contain provisions which substantially reduce the likelihood that such securities will be prepaid (e.g., significant prepayment penalties on loans and, in some cases, prohibition on principal payments for several years following origination).

• **When-Issued Securities, Delayed Delivery Securities, TBAs and Forward Commitments.** The Fund may purchase or sell securities that it is entitled to receive on a when-issued, delayed delivery or through a forward commitment basis. For example, the Fund may

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Morgan Stanley Prospectus \| **Fund Summary**

Mortgage Securities Trust (Con't)

invest in TBAs, which settle on a delayed delivery basis. These investments may result in a form of leverage and may increase volatility in the Fund's share price. In a TBA transaction, the seller agrees to deliver the MBS for an agreed upon price on an agreed upon future date, but makes no guarantee as to which or how many securities are to be delivered. Accordingly, the Fund's investments in TBAs are subject to risks such as failure of the counterparty to perform its obligation to deliver the security, the characteristics of a security delivered to the Fund may be less favorable than expected and the security the Fund buys will lose value prior to its delivery. The Fund's purchase of other securities on a when-issued, delayed delivery or through a forward commitment basis are subject to similar risks. When the Fund has sold a security on a when-issued, delayed delivery, or forward commitment basis, the Fund does not benefit if the value of the security appreciates above the sale price during the commitment period and the Fund is subject to failure of the counterparty to pay for the securities.<br>

• **Inverse Floaters.** Inverse floating rate obligations are obligations that pay interest at rates that vary inversely with changes in market rates of interest. Because the interest rate paid to holders of such obligations is generally determined by subtracting a variable or floating rate from a predetermined amount, the interest rate paid to holders of such obligations will decrease as such variable or floating rate increases and increase as such variable or floating rate decreases.

• **U.S. Government Securities.** Different types of U.S. government securities are subject to different levels of credit risk, including the risk of default, depending on the nature of the particular government support for that security. For example, a U.S. government- sponsored entity, such as Federal National Mortgage Association or Federal Home Loan Mortgage Corporation, although chartered or sponsored by an Act of Congress, may issue securities that are neither insured nor guaranteed by the U.S. Treasury and, therefore, are not backed by the full faith and credit of the United States. With respect to U.S. government securities that are not backed by the full faith and credit of the United States, there is the risk that the U.S. Government will not provide financial support to such U.S. government agencies, instrumentalities or sponsored enterprises if it is not obligated to do so by law.

• **Asset-Backed Securities.** Asset-backed securities are subject to credit (such as a borrower's default on its mortgage obligation and the default or failure of a guarantee underlying the asset-backed security), interest rate and certain additional risks, including the risk that various federal and state consumer laws and other legal and economic factors may result in the collateral backing the securities being insufficient to support payment on the securities. Some asset-backed securities also entail prepayment risk and extension risk, which may vary depending on the type of asset. Due to these risks, asset-backed securities may become more volatile in certain interest rate environments.

• **Liquidity.** The Fund may make investments that are illiquid or restricted or that may become illiquid or less liquid in response to overall economic conditions or adverse investor perceptions, and which may entail greater risk than investments in other types of securities. These investments may be more difficult to value or sell, particularly in times of market turmoil, and there may be little trading in the secondary market available for particular securities. Liquidity risk may be magnified in a market where credit spread and interest rate volatility is rising and where investor redemptions from fixed-income mutual funds may be higher than normal. If the Fund is forced to sell an illiquid or restricted security to fund redemptions or for other cash needs, it may be forced to sell the security at a loss or for less than its fair value.

• **High Yield Securities ("Junk Bonds").** The Fund's investments in high yield securities expose it to a substantial degree of credit risk. High yield securities may be issued by companies that are restructuring, are smaller and less creditworthy or are more highly indebted than other companies, and therefore they may have more difficulty making scheduled payments of principal and interest. High yield securities are subject to greater risk of loss of income and principal than higher rated securities and may be considered speculative. High yield securities may experience reduced liquidity, and sudden and substantial decreases in price. An economic downturn affecting an issuer of high yield securities may result in an increased incidence of default. In the event of a default, the Fund may incur additional expenses to seek recovery.

• **Foreign Securities.** Investments in foreign markets entail special risks such as currency, political (including geopolitical) , economic and market risks. There also may be greater market volatility, less reliable financial information, less stringent investor protections and disclosure standards, higher transaction and custody costs, decreased market liquidity and less government and exchange regulation associated with investments in foreign markets. In addition, investments in certain foreign markets that have historically been considered stable may become more volatile and subject to increased risk due to ongoing developments and changing conditions in such markets. Moreover, the growing interconnectivity of global economies and financial markets has increased the probability that adverse developments and conditions in one country or region will affect the stability of economies and financial markets in other countries or regions. Certain foreign markets may rely heavily on particular industries or foreign capital and are more vulnerable to diplomatic developments, the imposition of economic sanctions against a particular country or countries, organizations, companies, entities and/or individuals, changes in international trading patterns, trade barriers and other protectionist or retaliatory measures. Investments in foreign markets may also be adversely affected by governmental actions such as the imposition of capital controls, nationalization of companies or industries, expropriation of assets or the imposition of punitive taxes. The governments of certain countries may prohibit or impose substantial restrictions on foreign investing in their capital markets or in certain sectors or industries. In addition, a foreign government may limit or cause delay in the convertibility or repatriation of its currency which would adversely affect the U.S. dollar value and/or liquidity of investments denominated in that currency. Certain foreign investments may become less liquid in response to market developments or adverse investor perceptions, or become illiquid after purchase by the Fund, particularly during periods of market turmoil. When the Fund holds

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Morgan Stanley Prospectus \| **Fund Summary**

Mortgage Securities Trust (Con't)

illiquid investments, its portfolio may be harder to value. In addition, the Fund's investments in foreign issuers may be denominated in foreign currencies and therefore, to the extent unhedged, the value of those investments will fluctuate with U.S. dollar exchange rates. To the extent hedged by the use of foreign currency forward exchange contracts, the precise matching of the foreign currency forward exchange contract amounts and the value of the securities involved will not generally be possible because the future value of such securities in foreign currencies will change as a consequence of market movements in the value of those securities between the date on which the contract is entered into and the date it matures. There is additional risk that such transactions may reduce or preclude the opportunity for gain if the value of the currency should move in the direction opposite to the position taken and that foreign currency forward exchange contracts create exposure to currencies in which the Fund's securities are not denominated. The use of foreign currency forward exchange contracts involves the risk of loss from the insolvency or bankruptcy of the counterparty to the contract or the failure of the counterparty to make payments or otherwise comply with the terms of the contract. Economic sanctions or other similar measures may be, and have been, imposed against certain countries, organizations, companies, entities and/or individuals. Economic sanctions and other similar measures could, among other things, effectively restrict or eliminate the Fund's ability to purchase or sell securities, negatively impact the value or liquidity of the Fund's investments, significantly delay or prevent the settlement of the Fund's securities transactions, force the Fund to sell or otherwise dispose of investments at inopportune times or prices, or impair the Fund's ability to meet its investment objective or invest in accordance with its investment strategies.<br>

• **LIBOR Discontinuance or Unavailability Risk.** The London InterBank Offered Rate ("LIBOR") is intended to represent the rate at which contributing banks may obtain short-term borrowings from each other in the London interbank market. The Financial Conduct Authority (the "FCA"), which is the regulatory authority that oversees financial services firms , financial markets in the U.K. and the administrator of LIBOR, announced that, after the end of 2021, one-week and two-month U.S. Dollar LIBOR and all non-U.S. Dollar LIBOR settings have either ended or are no longer representative of the underlying market they seek to measure. The FCA also announced that the most commonly used U.S. dollar LIBOR settings may continue to be provided on a representative basis until mid-2023. However, in connection with supervisory guidance from regulators, some regulated entities may no longer enter into most new LIBOR-based contracts . As a result of the foregoing , LIBOR may no longer be available or no longer deemed an appropriate reference rate upon which to determine the interest rate on or impacting certain loans, notes, derivatives and other instruments or investments held by the Fund .

• **Derivatives.** Derivatives and other similar instruments often have risks similar to those of the underlying asset or instrument, including market risk, and may have additional risks, including imperfect correlation between the value of the derivative and the underlying asset, risks of default by the counterparty to certain transactions, magnification of losses incurred due to changes in the market value of the securities, instruments, indices or interest rates to which the derivative instrument relates , risks that the transactions may not be liquid , risks arising from margin and payment requirements, risks arising from mispricing or valuation complexity and operational and legal risks . Certain derivative transactions may give rise to a form of leverage. Leverage magnifies the potential for gain and the risk of loss.

• **Market and Geopolitical Risk.** The value of your investment in the Fund is based on the values of the Fund's investments, which may change due to economic and other events that affect markets generally, as well as those that affect particular regions, countries, industries, companies or governments. These events may be sudden and unexpected, and could adversely affect the liquidity of the Fund's investments, which may in turn impact valuation, the Fund's ability to sell securities and/or its ability to meet redemptions. The risks associated with these developments may be magnified if certain social, political, economic and other conditions and events (such as war, natural disasters, epidemics and pandemics, terrorism, conflicts , social unrest, recessions, inflation, rapid interest rate changes and supply chain disruptions) adversely interrupt the global economy and financial markets. It is difficult to predict when events affecting the U.S. or global financial markets may occur, the effects that such events may have and the duration of those effects (which may last for extended periods). These events may negatively impact broad segments of businesses and populations and have a significant and rapid negative impact on the performance of the Fund's investments , adversely affect and increase the volatility of the Fund's share price and exacerbate pre-existing risks to the Fund.

• **Portfolio Turnover.** Consistent with its investment policies, the Fund will purchase and sell securities without regard to the effect on portfolio turnover. Higher portfolio turnover will cause the Fund to incur additional transaction costs.

• **Active Management Risk.** In pursuing the Fund's investment objective, the Adviser has considerable leeway in deciding which investments to buy, hold or sell on a day-to-day basis, and which trading strategies to use. For example, the Adviser, in its discretion, may determine to use some permitted trading strategies while not using others. The success or failure of such decisions will affect the Fund's performance.

• **ESG Investment Risk.** The integration of ESG factors in the Fund's investment process may impact the Fund's performance and there is no guarantee that the integration of ESG factors will result in better performance. Additionally, the Fund's integration of ESG factors in connection with identifying and selecting investments may require subjective analysis based on qualitative assessments and may be difficult if data about a particular company or issuer is limited or if the data is inaccurate, incomplete, unavailable or based on estimates. A company's ESG practices or the Adviser's assessment of such may change over time.

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Morgan Stanley Prospectus \| **Fund Summary**

Mortgage Securities Trust (Con't)

Shares of the Fund are not bank deposits and are not guaranteed or insured by the Federal Deposit Insurance Corporation or any other government agency.

**Past Performance**

The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's Class A shares' performance from year-to-year and by showing how the Fund's average annual returns for the past one, five and 10 year periods and since inception compare with those of a broad measure of market performance, as well as an index that represents a group of similar mutual funds, over time. The performance of the other classes, which is shown in the table below, will differ because the classes have different ongoing fees. The performance information in the bar chart does not reflect the deduction of sales charges; if these amounts were reflected, returns would be less than shown. The Fund's returns in the table include the maximum applicable sales charge for Class A and Class C and assume you sold your shares at the end of each period (unless otherwise noted). The Fund's past performance, before and after taxes, is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available online at www.morganstanley.com/im or by calling toll-free 1-800-869-6397.

**Annual Total Returns—Calendar Years**

![image](pr15548img003.jpg)

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| | | |
|:---|:---|:---|
| **High Quarter** | 06/30/20 | 6.04% |
| **Low Quarter** | 03/31/20 | -6.76% |

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**Average Annual Total Returns<sup>1</sup>**

(for the calendar periods ended December 31, 2022)

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| | | | | |
|:---|:---|:---|:---|:---|
|  | **Past 1**<br>**Year** | **Past 5**<br>**Years** | **Past 10**<br>**Years** | **Since Inception** |
| **Class A**<sup>2</sup>  |  |  |  |  |
| Return Before Taxes | -11.69% | -0.18% | 2.16% | 3.71% |
| Return After Taxes on Distributions<sup>3</sup>  | -12.98% | -1.48% | 0.37% | 1.88% |
| Return After Taxes on Distributions and Sale of Fund Shares | -6.90% | -0.65% | 0.86% | 2.08% |
| **Class L**<sup>2</sup>  |  |  |  |  |
| Return Before Taxes | -9.04% | 0.20% | 2.22% | 3.30% |
| **Class I**<sup>2</sup>  |  |  |  |  |
| Return Before Taxes | -8.44% | 0.86% | 2.89% | 4.06% |
| **Class C**<sup>2</sup>  |  |  |  |  |
| Return Before Taxes | -10.26% | -0.26% | N/A | 1.07% |
| **Class R6**<sup>2</sup>  |  |  |  |  |
| Return Before Taxes | -8.28% | N/A | N/A | 0.97% |
| Bloomberg U.S. Mortgage Backed Securities (MBS) Index (reflects no deduction for fees, expenses or taxes)<sup>4</sup>  | -11.81% | -0.53% | 0.74% | 3.85%<sup>5</sup> |
| Lipper U.S. Mortgage Funds Index (reflects no deduction for taxes)<sup>6</sup>  | -10.83% | 0.15% | 1.17% | 3.63%<sup>5</sup> |

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1 During 2016, the Fund received proceeds related to certain non-recurring litigation settlements. Had these settlements not occurred, the 10 year and since inception (where applicable) returns before and after taxes for such periods would have been lower.

2 Class A, L and I shares commenced operations on July 28, 1997. Class C shares commenced operations on April 30, 2015 and Class R6 shares commenced operations on June 15, 2018. Effective April 29, 2022, Class IS shares were renamed Class R6 shares.

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Morgan Stanley Prospectus \| **Fund Summary**

Mortgage Securities Trust (Con't)

3 These returns do not reflect any tax consequences from a sale of your shares at the end of each period, but they do reflect any applicable sales charges on such a sale.

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| | |
|:---|:---|
| 4 | The Bloomberg U.S. Mortgage Backed Securities (MBS) Index tracks agency mortgage backed pass-through securities (both fixed-rate and hybrid ARM) guaranteed by Ginnie Mae (GNMA), Fannie Mae (FNMA), and Freddie Mac (FHLMC). This Index is the Mortgage Backed Securities Fixed Rate component of the Bloomberg U.S. Aggregate Index. It is not possible to invest directly in an index. |

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5 Since Inception reflects the inception date of Class A shares.

6 The Lipper U.S. Mortgage Funds Index is an equally weighted performance index of the largest qualifying funds (based on net assets) in the Lipper U.S. Mortgage Funds classification. There are currently 30 funds represented in this Index.

The after-tax returns shown in the table above are calculated using the historical highest individual federal marginal income tax rates during the period shown and do not reflect the impact of state and local taxes. After-tax returns for the Fund's other classes will vary from the Class A shares' returns. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts ("IRAs"). After-tax returns may be higher than before-tax returns due to foreign tax credits and/or an assumed benefit from capital losses that would have been realized had Fund shares been sold at the end of the relevant periods, as applicable.

**Fund Management**

**Adviser.** Morgan Stanley Investment Management Inc.

**Portfolio Managers.** The Fund is managed by members of the Fixed Income team. Information about the members jointly and primarily responsible for the day-to-day management of the Fund's portfolio is shown below:

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| | | |
|:---|:---|:---|
| Name | Title with Adviser | Date Began<br>Managing Fund |
| Gregory Finck | Managing Director | January 2015 |
| Matt Buckley | Managing Director | December 2022 |

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**Purchase and Sale of Fund Shares**

*The Fund has suspended offering Class L shares of the Fund for sale to all investors. The Class L shareholders of the Fund do not have the option of purchasing additional Class L shares. However, the existing Class L shareholders may invest in additional Class L shares through reinvestment of dividends and distributions.*

The minimum initial investment generally is $1 million for Class I shares and $1,000 for each of Class A and Class C shares of the Fund. To purchase Class R6 shares, an investor must meet a minimum initial investment of $5 million or be a defined contribution, defined benefit or other employer sponsored employee benefit plan, in each case provided that the plan trades through an intermediary that combines its clients' assets in a single omnibus account, whether or not such plan is qualified under the Internal Revenue Code of 1986, as amended (the "Code"), and in each case subject to the discretion of the Adviser. The minimum investment requirements may be waived for certain investments. For more information, please refer to the section of the Prospectus entitled "Shareholder Information—How to Buy Shares—Minimum Investment Amounts."

You can purchase or sell Fund shares on any day the New York Stock Exchange ("NYSE") is open for business (except when the following federal holidays are observed: Columbus Day and Veterans Day) directly from the Fund by mail (c/o SS&C Global Investor and Distribution Solutions, Inc., P.O. Box 219804, Kansas City, MO 64121-9804), by telephone (1-800-869-6397) or by contacting your Morgan Stanley Financial Advisor or an authorized third-party, such as a broker-dealer or other financial intermediary that has entered into a selling agreement with the Fund's "Distributor," Morgan Stanley Distribution, Inc. (each, a "Financial Intermediary"). In addition, you can sell Fund shares at any time by enrolling in a systematic withdrawal plan. Your shares will be sold at the next price calculated after we receive your order to redeem. If you sell Class A or Class C shares, your net sale proceeds are reduced by the amount of any applicable CDSC. For more information, please refer to the sections of the Prospectus entitled "Shareholder Information—How To Buy Shares" and "—How To Sell Shares."

**Tax Information**

The Fund intends to make distributions that may be taxed as ordinary income or capital gains, unless you are investing through a tax-deferred arrangement, such as a 401(k) plan or an IRA.

**Payments to Broker-Dealers and Other Financial Intermediaries**

If you purchase Fund shares through a Financial Intermediary (such as a bank), the Adviser and/or the Distributor may pay the Financial Intermediary for the sale of Fund shares and related services. These payments, which may be significant in amount, may

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Morgan Stanley Prospectus \| **Fund Summary**

Mortgage Securities Trust (Con't)

create a conflict of interest by influencing the Financial Intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your Financial Intermediary's web site for more information.

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Morgan Stanley Prospectus \| **Fund Details**

Mortgage Securities Trust

&nbsp;&nbsp;&nbsp; ***Income***<br> *An investment objective having the goal of selecting securities to pay out income rather than rise in price.*<br>

Additional Information about the Fund's Investment Objective, Strategies and Risks

**Investment Objective**

Morgan Stanley Mortgage Securities Trust seeks a high level of current income.

**Principal Investment Strategies**

The Fund will normally invest at least 80% of its assets in mortgage-related securities. This policy may be changed without shareholder approval; however, you would be notified upon 60 days' notice in writing of any changes. These mortgage-related securities may include mortgage-backed securities such as mortgage pass-through securities, CMOs, SMBS, CMBS and inverse floaters. The mortgage-backed securities in which the Fund invests may be issued or guaranteed by the U.S. Government, its agencies or instrumentalities or may be offered by non-governmental issuers, such as commercial banks, savings and loan institutions, private mortgage insurance companies, mortgage bankers and other secondary market issuers. The Fund may also invest in high yield securities (commonly referred to as "junk bonds"). The Fund is not limited as to the maturities or types of mortgage-backed securities in which it may invest. The Fund may also use derivative instruments as discussed below. These derivative instruments will be counted toward the Fund's 80% policy discussed above to the extent they have economic characteristics similar to the securities included within that policy.

In making investment decisions, the Adviser considers economic developments, interest rate levels and other factors. To identify attractive sectors and securities, the Adviser employs both top-down and bottom-up analyses. In addition, the Adviser combines quantitative and fundamental methodologies to limit the Fund's investment universe from which potential investments are then selected. In a securitized strategy, such as the strategy employed by the Fund, a majority of the Adviser's investment process is security selection related.

In addition, the Fund's investment process incorporates information about environmental, social and governance issues (also referred to as ESG) via an integrated approach alongside traditional fundamental factors within the investment team's fundamental investment analysis framework. ESG factors that the Adviser may consider include, but are not limited to, the environmental impact of properties or collateral underlying mortgage- or other asset-backed securities, affordable lending to disadvantaged borrowers and payment collection and foreclosure practices. The Adviser supports the Fund's stock selection process with research and analysis, including direct company engagements and third-party data. For example, the Adviser may engage with management of certain issuers or companies regarding corporate governance practices as well as what the Adviser deems to be materially important environmental and/or social issues or risks facing an issuer or company, such as the behaviors of lenders and loan servicers. Although the Adviser references third-party ESG data during the security research process, it generally does not rely on third party ESG data for the purposes of constructing the portfolio. Instead, the Adviser typically relies on its own proprietary analysis and scoring for security selection and portfolio construction rather than third-party analysis. Although ESG factors are typically considered with respect to each mortgage- and other asset backed security in which the Fund invests, other factors are also considered by the portfolio management team. Other securities and assets in which the Fund invests will generally not be subject to ESG factors. No one factor or consideration is determinative in the Fund's investment process.

The Fund may invest up to 50% of its net assets in high yield securities. High yield securities are fixed-income securities rated by one or more rating agencies below Baa3 by Moody's, below BBB- by S&P, below BBB- by Fitch, or the equivalent by another NRSRO, or if unrated, considered by the Adviser to be of equivalent quality.

One type of mortgage-backed security in which the Fund may invest is a mortgage pass-through security, which represents a participation interest in a pool of residential mortgage loans originated by U.S. governmental or private lenders such as banks. Mortgage pass-through securities provide for monthly payments that are a "pass-through" of the monthly interest and principal payments made by the individual borrowers on the pooled mortgage loans. CMOs are debt obligations collateralized by Mortgage Assets. CMOs are issued in multiple classes and each class has a fixed or floating rate and a stated maturity or final distribution date. Certain classes will have more predictable cash flows than others. The Fund may invest in any class of CMO. SMBS are derivative multi-class mortgage-backed securities. A common type of stripped mortgage-backed security will have one class receiving some of the interest and most of the principal from the Mortgage Assets, while the other class receives 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). CMBS are generally multi-class or pass-through securities backed by a mortgage loan or a pool of mortgage loans secured by commercial property, such as industrial and warehouse properties,

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Morgan Stanley Prospectus \| **Fund Details**

Mortgage Securities Trust (Con't)

office buildings, retail space and shopping malls, multifamily properties and cooperative apartments. Inverse floaters are obligations which pay interest at rates that vary inversely with changes in market rates of interest. Because the interest rate paid to holders of such obligations is generally determined by subtracting a variable or floating rate from a predetermined amount, the interest rate paid to holders of such obligations will decrease as such variable or floating rate increases and increase as such variable or floating rate decreases. In addition, the Fund may invest in to-be-announced pass-through mortgage securities, which settle on a delayed delivery basis ("TBAs").

The Fund also may invest in other U.S. government securities, including, but not limited to, U.S. Treasury bills, notes and bonds, securities (including mortgage-backed securities) issued by agencies or instrumentalities of the U.S. Government which may or may not be backed by the full faith and credit of the United States, and securities issued by agencies or instrumentalities which are backed solely by the credit of the issuing agency or instrumentality.

The Fund may also invest in asset-backed securities and restricted and illiquid securities.

In addition, the Fund may invest up to 20% of its net assets in foreign securities, including U.S. dollar-denominated securities issued in the U.S. capital markets by foreign issuers, some of which are commonly known as "Yankee Bonds" and non-U.S. dollar-denominated securities, including Eurobonds.

The Fund may also invest in debt instruments and loan-related investments, such as public bank loans made by banks or other financial institutions and loan participations and assignments, which may be rated investment grade or below investment grade.

The Fund's fixed-income investments may include zero coupon securities, which are purchased at a discount and generally accrue interest, but make no payment until maturity.

In addition to the securities described above, the Fund may also invest in municipal securities.

The Fund may, but it is not required to, use derivatives and similar instruments for a variety of purposes, including hedging, risk management, portfolio management or to earn income. A derivative is a financial instrument the value of which is based, in part, on the value of an underlying asset, interest rate, index or financial instrument. Prevailing interest rates and volatility levels, among other things, also affect the value of derivative instruments. The Fund's use of derivatives may involve the purchase and sale of derivative instruments such as futures, options, swaps and other similar instruments and techniques. The Fund may use foreign currency forward exchange contracts, which are also derivatives, in connection with its investments in foreign securities.

In pursuing the Fund's investment objective, the Adviser has considerable leeway in deciding which investments it buys, holds or sells on a day-to-day basis and which trading strategies it uses. For example, the Adviser in its discretion may determine to use some permitted trading strategies while not using others.

For purposes of policies adopted in accordance with Rule 35d-1 under the Investment Company Act of 1940, as amended (the "1940 Act"), the term "assets," as defined in Rule 35d-1 under the 1940 Act, means net assets plus the amount of any borrowings for investment purposes.

\*\*\*

The percentage limitations relating to the composition of the Fund's portfolio apply at the time the Fund acquires an investment. Subsequent percentage changes that result from market fluctuations generally will not require the Fund to sell any portfolio security. However, the Fund may be required to reduce its borrowings, if any, in response to fluctuations in the value of such holdings. The Fund may change its principal investment strategies without shareholder approval; however, you would be notified of any changes.

**Additional Information About the Fund's Investment Strategies and Principal Risks**

This section discusses additional information relating to the Fund's investment strategies, other types of investments that the Fund may make and related risk factors. The Fund's investment practices and limitations are also described in more detail in the Statement of Additional Information ("SAI"), which is incorporated by reference and legally is a part of this Prospectus. For details on how to obtain a copy of the SAI and other reports and information, see the back cover of this Prospectus

There is no assurance that the Fund will achieve its investment objective. The Fund's share price and yield will fluctuate with changes in the market value and/or yield of the Fund's portfolio securities. Neither the value nor the yield of the U.S. government securities in which the Fund invests (or the value or yield of the Fund's shares) is guaranteed by the U.S. Government. When you sell Fund shares, they may be worth less than what you paid for them and, accordingly, you can lose money investing in this Fund.

Economies and financial markets worldwide have recently experienced periods of increased volatility, uncertainty, distress, government spending, inflation and disruption to consumer demand, economic output and supply chains. To the extent these conditions continue, the risks associated with an investment in the Fund, including those described below, could be heightened and

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Morgan Stanley Prospectus \| **Fund Details**

Mortgage Securities Trust (Con't)

the Fund's investments (and thus a shareholder's investment in the Fund) may be particularly susceptible to sudden and substantial losses, reduced yield or income or other adverse developments. The occurrence, duration and extent of these or other types of adverse economic and market conditions and uncertainty over the long term cannot be reasonably projected or estimated at this time.

**Fixed-Income Securities**

Fixed-income securities are securities that pay a fixed or a variable rate of interest until a stated maturity date. Fixed-income securities include U.S. government securities, securities issued by federal or federally sponsored agencies and instrumentalities, corporate bonds and notes, asset-backed securities, mortgage securities, securities rated below investment grade (commonly referred to as "junk bonds" or "high yield/high risk securities") municipal bonds, loan participations and assignments, zero coupon bonds, convertible securities, Eurobonds, Brady Bonds, Yankee Bonds, repurchase agreements, commercial paper and cash equivalents.

Fixed-income securities are subject to the risk of the issuer's inability to meet principal and interest payments on its obligations (i.e., credit risk) and are subject to price volatility resulting from, among other things, interest rate sensitivity (i.e., interest rate risk), market perception of the creditworthiness of the issuer and general market liquidity (i.e., market risk). The Fund may face a heightened level of interest rate risk in times of monetary policy change and/or uncertainty, such as when the Federal Reserve Board adjusts a quantitative easing program and/or changes rates. A changing interest rate environment increases certain risks, including the potential for periods of volatility, increased redemptions, shortened durations (i.e., prepayment risk) and extended durations (i.e., extension risk). Securities with longer durations are likely to be more sensitive to changes in interest rates, generally making them more volatile than securities with shorter durations. Lower rated fixed-income securities have greater volatility because there is less certainty that principal and interest payments will be made as scheduled. The Fund may be subject to liquidity risk, which may result from the lack of an active market and the reduced number and capacity of traditional market participants to make a market in fixed-income securities. Fixed-income securities may be called (i.e., redeemed by the issuer) prior to final maturity. If a callable security is called, the Fund may have to reinvest the proceeds at a lower rate of interest.

The Fund may invest in zero coupon securities. Such securities are purchased at a discount from their face amount, giving the purchaser the right to receive their full value at maturity. The interest earned on such securities is, implicitly, automatically compounded and paid out at maturity. While such compounding at a constant rate eliminates the risk of receiving lower yields upon reinvestment of interest if prevailing interest rates decline, the owner of a zero coupon security will be unable to participate in higher yields upon reinvestment of interest received on interest-paying securities if prevailing interest rates rise.

A zero coupon security pays no interest to its holder during its life. Therefore, to the extent the Fund invests in zero coupon securities, it will not receive current cash available for distribution to shareholders. In addition, zero coupon securities are subject to substantially greater price fluctuations during periods of changing prevailing interest rates than are comparable securities which pay interest on a current basis. Current federal tax law requires that a holder (such as the Fund) of a zero coupon security accrue a portion of the discount at which the security was purchased as income each year even though the Fund receives no interest payments in cash on the security during the year.

**Credit and Interest Rate Risk**

Fixed-income securities, such as bonds, generally are subject to two types of risk: credit risk and interest rate risk. Credit risk refers to the possibility that the issuer or guarantor of a security will be unable or unwilling or perceived to be unable or unwilling to make interest payments and/or repay the principal on its debt. The risk of defaults across issuers and/or counterparties increases in adverse market and economic conditions. Interest rate risk refers to fluctuations (such as a decline) in the value of a fixed-income security resulting from changes in the general level of interest rates. When the general level of interest rates goes up, the prices of most fixed-income securities go down. When the general level of interest rates goes down, the prices of most fixed-income securities go up. A low interest rate environment may prevent the Fund from providing a positive yield or paying Fund expenses out of current income. The Fund may face a heightened level of interest rate risk in times of monetary policy change and/or uncertainty, such as when the Federal Reserve Board adjusts a quantitative easing program and/or changes rates. During periods when interest rates are low or there are negative interest rates, the Fund's yield (and total return) also may be low or otherwise adversely affected or the Fund may be unable to maintain positive returns. Credit ratings may not be an accurate assessment of liquidity or credit risk. Although credit quality may not accurately reflect the true credit risk of an instrument, a change in the credit rating of an instrument or an issuer can have a rapid, adverse effect on the instrument's liquidity and make it more difficult for the Fund to sell at an advantageous price or time.

In addition, under certain conditions, there may be an increasing amount of issuers that are unprofitable, have little cash on hand and/or are unable to pay the interest owed on their debt obligations and the number of such issuers may increase if demand for their goods and services falls, borrowing costs rise due to governmental action or inaction or other reasons.

**Mortgage-Backed Securities**

Because the Fund concentrates its investments in the mortgage-backed securities industry, the Fund has greater exposure to the potential adverse economic, regulatory, political and other changes affecting such industry. Mortgage-backed securities are fixed-income securities representing an interest in a pool of underlying mortgage loans. They are sensitive to changes in interest rates, but

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may respond to these changes differently from other fixed-income securities due to the possibility of prepayment of the underlying mortgage loans. As a result, it may not be possible to determine in advance the actual maturity date or average life of a mortgage-backed security. Rising interest rates tend to discourage refinancings, with the result that the average life and volatility of the security will increase and its market price will decrease. When interest rates fall, however, mortgage-backed securities may not gain as much in market value because additional mortgage prepayments must be reinvested at lower interest rates. Prepayment risk may make it difficult to calculate the average maturity of a portfolio of mortgage-backed securities and, therefore, to assess the volatility risk of that portfolio.

The Fund may invest in mortgage-backed securities that are issued or guaranteed by the U.S. Government, its agencies or instrumentalities. These securities are either direct obligations of the U.S. Government or the issuing agency or instrumentality has the right to borrow from the U.S. Treasury to meet its obligations although it is not legally required to extend credit to the agency or instrumentality. Certain of these mortgage-backed securities purchased by the Fund, such as those issued by the Government National Mortgage Association and the Federal Housing Administration, are backed by the full faith and credit of the United States. Other of these mortgage-backed securities purchased by the Fund, such as those issued by the Federal National Mortgage Association ("Fannie Mae") and Federal Home Loan Mortgage Corporation ("Freddie Mac"), are not backed by the full faith and credit of the United States and there is a risk that the U.S. Government will not provide financial support to these agencies if it is not obligated to do so by law. The maximum potential liability of the issuers of some of the mortgage-backed securities held by the Fund may greatly exceed their current resources, including their legal right to support from the U.S. Treasury. It is possible that these issuers will not have the funds to meet their payment obligations in the future.

Non-agency mortgage-backed securities are not traded on an exchange and there may be a limited market for the securities, especially when there is a perceived weakness in the mortgage and real estate market sectors. Without an active trading market, mortgage-related securities held in the Fund's portfolio may be particularly difficult to value because of the complexities involved in assessing the value of the underlying mortgage loans. Non-agency mortgage-backed securities include securities that reflect an interest in, and are secured by, mortgage loans on commercial real property. Many of the risks of investing in commercial mortgage-backed securities reflect the risks of investing in the real estate securing the underlying mortgage loans. These risks reflect the effects of local and other economic conditions on real estate markets, the ability of tenants to make loan payments, and the ability of a property to attract and retain tenants.

The Fund may invest a substantial portion of its assets in non-agency mortgage-backed securities rated below investment grade which are commonly known as "junk bonds" or "high yield/high risk securities." High yield securities are fixed-income securities rated by one or more ratings agencies below Baa3 by Moody's, below BBB- by S&P, below BBB- by Fitch, or the equivalent by another NRSRO, or if unrated, considered by the Adviser to be of equivalent quality. The Fund's investments in high yield securities pose significant risks. The prices of high yield securities are likely to be more sensitive to adverse economic changes or individual corporate developments than higher rated securities. During an economic downturn or substantial period of rising interest rates, junk bond issuers and, in particular, highly leveraged issuers may experience financial stress that would adversely affect their ability to service their principal and interest payment obligations, to meet their projected business goals or to obtain additional financing. In the event of a default, the Fund may incur additional expenses to seek recovery.

*Collateralized Mortgage Obligations*. CMOs are debt obligations collateralized by Mortgage Assets. Payments of principal and interest on the Mortgage Assets and any reinvestment income are used to make payments on the CMOs. CMOs are issued in multiple

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classes. Each class has a fixed or floating rate and a stated maturity or final distribution date. The principal and interest on the Mortgage Assets may be allocated among the classes in a number of different ways. Certain classes will, as a result of the allocation, have more predictable cash flows than others. As a general matter, the more predictable the cash flow, the lower the yield relative to other Mortgage Assets. The less predictable the cash flow, the higher the yield and the greater the risk. The Fund may invest in any class of CMO, including classes that vary inversely with interest rates and may be more volatile and sensitive to prepayment rates.

The principal and interest on the Mortgage Assets comprising a CMO may be allocated among the several classes of a CMO in many ways. The general goal in allocating cash flows on Mortgage Assets to the various classes of a CMO is to create certain tranches on which the expected cash flows have a higher degree of predictability than do the underlying Mortgage Assets. As a general matter, the more predictable the cash flow is on a particular CMO tranche, the lower the anticipated yield on that tranche at the time of issue will be relative to the prevailing market yields on the Mortgage Assets. As part of the process of creating more predictable cash flows on certain tranches of a CMO, one or more tranches generally must be created that absorb most of the changes in the cash flows on the underlying Mortgage Assets. The yields on these tranches are generally higher than prevailing market yields on other mortgage related securities with similar average lives. Principal prepayments on the underlying Mortgage Assets may cause the CMOs to be retired substantially earlier than their stated maturities or final distribution dates. Because of the uncertainty of the cash flows on these tranches, the market prices and yields of these tranches are more volatile and may increase or decrease in value substantially with changes in interest rates and/or the rates of prepayment. Due to the possibility that prepayments (on home mortgages and other collateral) will alter the cash flow on CMOs, it is not possible to determine in advance the final maturity date or average life. Faster prepayment will shorten the average life and slower prepayments will lengthen it. In addition, if the collateral securing CMOs or any third party guarantees are insufficient to make payments, the Fund could sustain a loss.

*Stripped Mortgage-Backed Securities*. SMBS are derivative multi-class mortgage-backed securities. SMBS may be issued by agencies or instrumentalities of the U.S. Government, or by private originators. 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 receives 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). Investments in each class of SMBS are extremely sensitive to changes in interest rates. IOs tend to decrease in value substantially if interest rates decline and prepayment rates become more rapid. POs tend to decrease in value substantially if interest rates increase and the rate of prepayment decreases. If the Fund invests in SMBS and interest rates move in a manner not anticipated by management, it is possible that the Fund could lose all or substantially all of its investment.

*Commercial Mortgage-Backed Securities*. CMBS are generally multi-class or pass-through securities backed by a mortgage loan or a pool of mortgage loans secured by commercial property, such as industrial and warehouse properties, office buildings, retail space and shopping malls, multifamily properties and cooperative apartments. The commercial mortgage loans that underlie CMBS are generally not amortizing or not fully amortizing. That is, at their maturity date, repayment of their remaining principal balance or "balloon" is due and is repaid through the attainment of an additional loan or sale of the property. An extension of a final payment on commercial mortgages will increase the average life of the CMBS, generally resulting in lower yield for discount bonds and a higher yield for premium bonds.

CMBS are subject to credit risk and prepayment risk. Although prepayment risk is present, it is of a lesser degree in the CMBS market than in the residential mortgage market; commercial real estate property loans often contain provisions that substantially reduce the likelihood that such securities will be prepaid (e.g., significant prepayment penalties on loans and, in some cases, prohibition on principal payments for several years following origination).

The risks associated with mortgage-backed securities are elevated in distressed economic, market, health and labor conditions, notably, increased levels of unemployment, delays and delinquencies in payments of mortgage and rent obligations, and uncertainty regarding the effects and extent of government intervention with respect to mortgage payments and other economic matters.

Delinquencies, defaults and losses on residential mortgage loans may increase substantially over certain periods, which may affect the performance of the mortgage-backed securities in which the Fund may invest. Mortgage loans backing non-agency mortgage-backed securities are more sensitive to economic factors that could affect the ability of borrowers to pay their obligations under the mortgage loans backing these securities. In addition, housing prices and appraisal values in many states and localities over certain periods have declined or stopped appreciating. A sustained decline or an extended flattening of those values may result in additional increases in delinquencies and losses on mortgage-backed securities generally (including the mortgage-backed securities that the Fund may invest in as described above). Adverse changes in market conditions and regulatory climate may reduce the cash flow which the Fund, to the extent it invests in mortgage-backed securities or other asset-backed securities, receives from such securities and increase the incidence and severity of credit events and losses in respect of such securities. In the event that interest rate spreads for mortgage-backed securities and other asset-backed securities widen following the purchase of such assets by the Fund, the market value of such securities is likely to decline and, in the case of a substantial spread widening, could decline by a substantial amount. Furthermore, adverse changes in market conditions may result in reduced liquidity in the market for mortgage-backed securities and other asset-backed securities (including the mortgage-backed securities and other asset-backed securities in which the Fund may invest) and an

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unwillingness by banks, financial institutions and investors to extend credit to servicers, originators and other participants in the market for mortgage-backed and other asset-backed securities. As a result, the liquidity and/or the market value of any mortgage-backed or asset-backed securities that are owned by the Fund may experience declines after they are purchased by the Fund.

**When-Issued Securities, Delayed Delivery Securities, TBAs and Forward Commitments**

The Fund may purchase or sell securities that it is entitled to receive on a when-issued, delayed delivery or through a forward commitment basis. These transactions involve the purchase or sale of securities by the Fund at an established price with payment and delivery taking place in the future. The Fund enters into these transactions to obtain what is considered an advantageous price to the Fund at the time of entering into the transaction. For example, the Fund may invest in TBAs, which settle on a delayed delivery basis. In a TBA transaction, the seller agrees to deliver the MBS for an agreed upon price on an agreed upon future date, but makes no guarantee as to which or how many securities are to be delivered. Accordingly, the Fund's investments in TBAs are subject to risks such as failure of the counterparty to perform its obligation to deliver the security, the characteristics of a security delivered to the Fund may be less favorable than expected and the security the Fund buys will lose value prior to its delivery. Investments in TBAs may give rise to a form of leverage. Leverage may cause the Fund to be more volatile than if the Fund had not been leveraged and may increase the impact that gains (losses) have on the Fund. Further, TBAs may increase the Fund's portfolio turnover rate. FINRA rules include mandatory margin requirements that will require the Fund to post collateral in connection with its TBA transactions, which could increase the cost of TBA transactions to the Fund and impose added operational complexity.

The Fund's purchase of other securities on a when-issued, delayed delivery or through a forward commitment basis are subject to similar risks, including counterparty risk and that the value of securities in these transactions on the delivery date may be less than the price paid by the Fund to purchase the securities. In addition, there can be no assurance that a security purchased on a when-issued basis will be issued. When the Fund has sold a security on a when-issued, delayed delivery, or forward commitment basis, the Fund does not benefit if the value of the security appreciates above the sale price during the commitment period and the Fund is subject to failure of the counterparty to pay for the securities.

**Inverse Floaters**

Inverse floaters are obligations which pay interest at rates that vary inversely with changes in market rates of interest. Because the interest rate paid to holders of such obligations is generally determined by subtracting a variable or floating rate from a predetermined amount, the interest rate paid to holders of such obligations will decrease as such variable or floating rate increases and increase as such variable or floating rate decreases.

Like most other fixed-income securities, the value of inverse floaters will decrease as interest rates increase. They are more volatile, however, than most other fixed-income securities because the coupon rate on an inverse floater typically changes at a multiple of the change in the relevant index rate. Thus, any rise in the index rate (as a consequence of an increase in interest rates) causes a correspondingly greater drop in the coupon rate of an inverse floater while a drop in the index rate causes a correspondingly greater increase in the coupon of an inverse floater. Some inverse floaters may also increase or decrease substantially because of changes in the rate of prepayments.

**Market and Geopolitical Risk**

The value of your investment in the Fund is based on the values of the Fund's investments, which may change due to economic and other events that affect markets generally, as well as those that affect particular regions, countries, industries, companies or governments. Price movements, sometimes called volatility, may be greater or less depending on the types of securities the Fund owns and the markets in which the securities trade. Volatility and disruption in financial markets and economies may be sudden and unexpected, expose the Fund to greater risk, including risks associated with reduced market liquidity and fair valuation, and adversely affect the Fund's operations. For example, the Adviser potentially will be prevented from executing investment decisions at an advantageous time or price as a result of any domestic or global market disruptions and reduced market liquidity may impact the Fund's ability to sell securities to meet redemptions.

The increasing interconnectivity between global economies and financial markets increases the likelihood that events or conditions in one region or financial market may adversely impact issuers in a different country, region or financial market. Securities in the Fund's portfolio may underperform due to inflation (or expectations for inflation), interest rates, global demand for particular products or resources, natural disasters, health emergencies (such as epidemics and pandemics), terrorism, regulatory events and governmental or quasi-governmental actions. The occurrence of global events similar to those in recent years, such as terrorist attacks around the world, natural disasters, health emergencies, social and political discord or debt crises and downgrades, among others, may result in market volatility and may have long term effects on both the U.S. and global financial markets. Inflation rates may change frequently and significantly because of various factors, including unexpected shifts in the domestic or global economy and changes in monetary or economic policies (or expectations that these policies may change). Changes in expected inflation rates may adversely affect market and economic conditions, the Fund's investments and an investment in the Fund. Other financial, economic and other global market and social developments or disruptions may result in similar adverse circumstances, and it is difficult to predict when similar events affecting the U.S. or global financial markets may occur, the effects that such events may have and the duration of those effects (which may last for extended periods). In general, the securities or other instruments that the Adviser believes represent an attractive

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investment opportunity or in which the Fund seeks to invest may be unavailable entirely or in the specific quantities sought by the Fund. As a result, the Fund may need to obtain the desired exposure through a less advantageous investment, forgo the investment at the time or seek to replicate the desired exposure through a derivative transaction or investment in another investment vehicle. Any such event(s) could have a significant adverse impact on the value and risk profile of the Fund's portfolio. There is a risk that you may lose money by investing in the Fund.

Social, political, economic and other conditions and events, such as war, natural disasters, health emergencies (e.g., the novel coronavirus outbreak, epidemics and other pandemics), terrorism, conflicts, social unrest, recessions, inflation, rapid interest rate changes and supply chain disruptions could reduce consumer demand or economic output, result in market closures, travel restrictions or quarantines, and generally have a significant impact on the economies and financial markets and the Adviser's investment advisory activities and services of other service providers, which in turn could adversely affect the Fund's investments and other operations.

Government and other public debt, including municipal obligations in which the Fund may invest, can be adversely affected by large and sudden changes in local and global economic conditions that result in increased debt levels. Although high levels of government and other public debt do not necessarily indicate or cause economic problems, high levels of debt may create certain systemic risks if sound debt management practices are not implemented. A high debt level may increase market pressures to meet an issuer's funding needs, which may increase borrowing costs and cause a government or public or municipal entity to issue additional debt, thereby increasing the risk of refinancing. A high debt level also raises concerns that the issuer may be unable or unwilling to repay the principal or interest on its debt, which may adversely impact instruments held by the Fund that rely on such payments. Governmental and quasi-governmental responses to certain economic or other conditions may lead to increasing government and other public debt, which heighten these risks. Unsustainable debt levels can lead to declines in the value of currency, and can prevent a government from implementing effective counter-cyclical fiscal policy during economic downturns, can generate or contribute to an economic downturn or cause other adverse economic or market developments, such as increases in inflation or volatility. Increasing government and other public debt may adversely affect issuers, obligors, guarantors or instruments across a variety of asset classes.

Global events may negatively impact broad segments of businesses and populations, cause a significant negative impact on the performance of the Fund's investments, adversely affect and increase the volatility of a Fund's share price and exacerbate pre-existing political, social and economic risks to the Fund. The Fund's operations may be interrupted as a result, which may contribute to the negative impact on investment performance. In addition, governments, their regulatory agencies, or self-regulatory organizations may take actions that affect the instruments in which the Fund invests, or the issuers of such instruments, in ways that could have a significant negative impact on the Fund's investment performance.

**ESG Investment Risk**

The integration of ESG factors in the Fund's investment process may impact the Fund's performance and there is no guarantee that the integration of ESG factors will result in better performance. Additionally, the Fund's integration of ESG factors in connection with identifying and selecting investments may require subjective analysis based on qualitative assessments and may be difficult if data about a particular company or issuer is limited or if the data is inaccurate, incomplete, unavailable or based on estimates, which could adversely affect the analysis of the ESG factors relevant to a particular investment. A company's ESG practices or the Adviser's assessment of such may change over time. The Fund may invest in companies or issuers that do not reflect the beliefs and values of any particular investor. ESG criteria are not necessarily considered with respect to each company or issuer in which the Fund invests and are not the sole determinant of whether or not an investment can be made or a holding can remain in the Fund's portfolio. As a result, the Fund may, in some cases, invest in companies or issuers that do not have favorable ESG characteristics.

The Adviser assesses ESG factors using a wide set of data inputs, combined with fundamental analysis. Although the Adviser looks to data inputs that each believes to be reliable, the Adviser cannot guarantee the accuracy, completeness or availability of third party data. Under the Adviser's investment process, data inputs may include information self-reported by companies and third-party providers that may be based on criteria or methodology that differs significantly from the criteria and methodology used by the Adviser to evaluate ESG factors. In addition, the criteria used by third-party providers can differ significantly, data can vary across providers and within the same industry for the same provider and third-party data may be inaccurate, incomplete, unavailable, or based on estimates which may adversely impact the Fund's investment process and the Adviser's analysis or application of ESG factors. The relevance and weightings of specific ESG factors to or within the Adviser's investment process for the Fund may vary across asset classes, industries and sectors and no one factor or consideration is determinative. The Fund's ESG criteria and application of related analyses may also result in the Fund forgoing opportunities to buy certain securities when it might otherwise be advantageous to do so, or selling securities when it might be otherwise disadvantageous for it to do so.

**U.S. Government Securities**

The U.S. government securities that the Fund may purchase include U.S. Treasury bills, notes and bonds, all of which are direct obligations of the U.S. Government. In addition, the Fund may purchase securities issued or guaranteed by agencies and

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instrumentalities of the U.S. Government which are backed by the full faith and credit of the United States. Among the agencies and instrumentalities issuing these obligations are the Government National Mortgage Association and the Federal Housing Administration. Also, the Fund may purchase securities issued by agencies and instrumentalities which are not backed by the full faith and credit of the United States, but whose issuing agency or instrumentality has the right to borrow, to meet its obligations, from the U.S. Treasury. Among these agencies and instrumentalities are Fannie Mae, Freddie Mac and the Federal Home Loan Banks. No assurance can be given that these initiatives will be successful. Further, the Fund may purchase securities issued by agencies and instrumentalities which are backed solely by the credit of the issuing agency or instrumentality. Among these agencies and instrumentalities is the Federal Farm Credit System. Because these securities are not backed by the full faith and credit of the United States, there is a risk that the U.S. Government will not provide financial support to these agencies if it is not obligated to do so by law. The maximum potential liability of the issuers of some U.S. government securities held by the Fund may greatly exceed their current resources, including their legal right to support from the U.S. Treasury. It is possible that these issuers will not have the funds to meet their payment obligations in the future. The interest from U.S. government securities generally is not subject to state and local taxation.

**Asset-Backed Securities**

Asset-backed securities apply the securitization techniques used to develop mortgage-backed securities to a broad range of other assets. Various types of assets, primarily automobile and credit card receivables and home equity loans, are pooled and securitized in pass-through structures similar to pass-through structures developed with respect to mortgage securitizations. Asset-backed securities have risk characteristics similar to mortgage-backed securities. Like mortgage-backed securities, they generally decrease in value as a result of interest rate increases, but may benefit less than other fixed-income securities from declining interest rates, principally because of prepayments. Also, as in the case of mortgage-backed securities, prepayments generally increase during a period of declining interest rates, although other factors, such as changes in credit use and payment patterns, may also influence prepayment rates. Asset-backed securities also involve the risk that various federal and state consumer laws and other legal and economic factors may result in the collateral backing the securities being insufficient to support payment on the securities.

**Liquidity**

The Fund may make investments that are illiquid or restricted or that may become illiquid or less liquid in response to overall economic conditions or adverse investor perceptions, and which may entail greater risk than investments in other types of securities. Illiquidity can be caused by, among other things, a drop in overall market trading volume, an inability to find a willing buyer, or legal restrictions on the securities' resale. These investments may be more difficult to value or sell, particularly in times of market turmoil, and there may be little trading in the secondary market available for particular securities. Liquidity risk may be magnified in a market where credit spread and interest rate volatility is rising and where investor redemptions from fixed-income mutual funds may be higher than normal. If the Fund is forced to sell an illiquid or restricted security to fund redemptions or for other cash needs, it may be forced to sell the security at a loss or for less than its fair value.

**High Yield Securities**

Fixed-income securities that are not investment grade are commonly referred to as "junk bonds" or high yield, high risk securities. These securities offer a higher yield than other higher rated securities, but they carry a greater degree of risk. High yield securities are subject to greater risk of loss of income and principal than higher rated securities and may be considered speculative by the major credit rating agencies. High yield securities may be issued by companies that are restructuring, are smaller and less creditworthy or are more highly indebted than other companies. This means that they may have more difficulty making scheduled payments of principal and interest. Changes in the value of high yield securities are influenced more by changes in the financial and business position of the issuing company than by changes in interest rates when compared to investment grade securities. During adverse market or economic conditions, high yield securities are typically particularly susceptible to default risk.

In recent years, there has been a broad trend of weaker or less restrictive covenant protections in the high yield market. Among other things, under such weaker or less restrictive covenants, borrowers might be able to exercise more flexibility with respect to certain activities than borrowers who are subject to stronger or more protective covenants. For example, borrowers might be able to incur more debt, including secured debt, return more capital to shareholders, remove or reduce assets that are designated as collateral securing high yield securities, increase the claims against assets that are permitted against collateral securing high yield securities or otherwise manage their business in ways that could impact creditors negatively. In addition, certain privately held borrowers might be permitted to file less frequent, less detailed or less timely financial reporting or other information, which could negatively impact the value of the high yield securities issued by such borrowers. Each of these factors might negatively impact the high yield securities held by the Fund.

**Foreign Securities**

Foreign issuers generally are subject to different accounting, auditing and financial reporting standards than U.S. issuers. There may be less information available to the public about foreign issuers. Securities of foreign issuers can be less liquid and experience greater price movements. In addition, the prices of such securities may be susceptible to influence by large traders, due to the limited size of many foreign securities markets. Moreover, investments in certain foreign markets that have historically been considered stable may become more volatile and subject to increased risk due to ongoing developments and changing conditions in such markets. Also, the

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growing interconnectivity of global economies and financial markets has increased the probability that adverse developments and conditions in one country or region will affect the stability of economies and financial markets in other countries or regions. In some foreign countries, there is also the risk of government expropriation, excessive taxation, political or social instability, the imposition of currency controls or diplomatic developments that could affect the Fund's investment. There also can be difficulty obtaining and enforcing judgments against issuers in foreign countries. Foreign stock exchanges, broker-dealers and listed issuers may be subject to less government regulation and oversight. The cost of investing in foreign securities, including brokerage commissions and custodial expenses, can be higher than the cost of investing in domestic securities.

Certain foreign markets may rely heavily on particular industries or foreign capital and are more vulnerable to diplomatic developments, the imposition of economic sanctions against a particular country or countries, organizations, companies, entities and/or individuals, changes in international trading patterns, trade barriers and other protectionist or retaliatory measures. International trade barriers or economic sanctions against foreign countries, organizations, companies, entities and/or individuals may adversely affect the Fund's foreign holdings or exposures. Investments in foreign markets may also be adversely affected by less stringent investor protections and disclosure standards, and governmental actions such as the imposition of capital controls, nationalization of companies or industries, expropriation of assets or the imposition of punitive taxes. Governmental actions can have a significant effect on the economic conditions in foreign countries, which also may adversely affect the value and liquidity of the Fund's investments. Foreign investment in the securities markets of certain foreign countries is restricted or controlled to varying degrees. For example, the governments of certain countries may prohibit or impose substantial restrictions on foreign investing in their capital markets or in certain sectors or industries. In addition, a foreign government may limit or cause delay in the convertibility or repatriation of its currency which would adversely affect the U.S. dollar value and/or liquidity of investments denominated in that currency. Moreover, if a deterioration occurs in a country's balance of payments, the country could impose temporary restrictions on foreign capital remittances. The Fund could also be adversely affected by delays in, or a refusal to grant, any required governmental approval for repatriation, as well as by the application to it of other restrictions on investment. Any of these actions could severely affect security prices, which could result in losses to the Fund and increased transaction costs, impair the Fund's ability to purchase or sell foreign securities or transfer the Fund's assets back into the United States, or otherwise adversely affect the Fund's operations. Certain foreign investments may become less liquid in response to market developments or adverse investor perceptions, or become illiquid after purchase by the Fund, particularly during periods of market turmoil. Certain foreign investments may become illiquid when, for instance, there are few, if any, interested buyers and sellers or when dealers are unwilling to make a market for certain securities. When the Fund holds illiquid investments, its portfolio may be harder to value.

Economic sanctions or other similar measures may be, and have been, imposed against certain countries, organizations, companies, entities and/or individuals. The Fund's investments in foreign securities are subject to trade laws and potential economic sanctions in the United States and other jurisdictions. These laws and related governmental actions, including counter-sanctions and other retaliatory measures, can, from time to time, prevent or prohibit the Fund from investing in certain foreign securities. In addition, economic sanctions could prohibit the Fund from transacting with particular countries, organizations, companies, entities and/or individuals by banning them from global payment systems that facilitate cross-border payments, restricting their ability to settle securities transactions, and freezing their assets. The imposition of sanctions and other similar measures could, among other things, cause a decline in the value of securities issued by the sanctioned country or companies located in, or economically linked to, the sanctioned country, downgrades in the credit ratings of the sanctioned country or companies located in, or economically linked to, the sanctioned country, devaluation of the sanctioned country's currency, and increased market volatility and disruption in the sanctioned country and throughout the world. Economic sanctions or other similar measures could, among other things, effectively restrict or eliminate the Fund's ability to purchase or sell securities, negatively impact the value or liquidity of the Fund's investments, significantly delay or prevent the settlement of the Fund's securities transactions, force the Fund to sell or otherwise dispose of investments at inopportune times or prices, increase the Fund's transaction costs, make the Fund's investments more difficult to value or impair the Fund's ability to meet its investment objective or invest in accordance with its investment strategies. These conditions may be in place for a substantial period of time and enacted with limited advance notice to the Fund.

The Fund may invest in debt obligations known as "sovereign debt," which are obligations of governmental issuers in emerging market or developing countries and industrialized countries. Certain emerging market or developing countries are among the largest debtors to commercial banks and foreign governments. The issuer or governmental authority that controls the repayment of sovereign debt may not be willing or able to repay the principal and/or pay interest when due in accordance with the terms of such obligations. Uncertainty surrounding the level and sustainability of sovereign debt of certain countries has at times increased volatility in the financial markets. In addition, a number of Latin American countries are among the largest debtors of developing countries and have a long history of reliance on foreign debt. Additional factors that may influence the ability or willingness to service debt include, but are not limited to, a country's cash flow situation, the availability of sufficient foreign exchange on the date a payment is due, the relative size of its debt service burden to the economy as a whole and its government's policy towards the International Monetary Fund, the World Bank and other multilateral agencies. A country whose exports are concentrated in a few commodities or whose economy depends on certain strategic imports could be vulnerable to fluctuations in international prices of these commodities or imports. If a foreign sovereign obligor cannot generate sufficient earnings from foreign trade to service its external debt, it may need to depend on continuing loans and aid from foreign governments, commercial banks and multilateral organizations, and

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Mortgage Securities Trust (Con't)

inflows of foreign investment. The commitment on the part of these foreign governments, multilateral organizations and others to make such disbursements may be conditioned on the government's implementation of economic reforms and/or economic performance and the timely service of its obligations. Failure to implement such reforms, achieve such levels of economic performance or repay principal or interest when due may result in the cancellation of such third-parties' commitments to lend funds, which may further impair the foreign sovereign obligor's ability or willingness to timely service its debts. In addition, there is no legal process for collecting on a sovereign debt that a government does not pay or bankruptcy proceeding by which all or part of the sovereign debt that a government entity has not repaid may be collected.

A depositary receipt is generally issued by a bank or financial institution and represents the common stock or other equity securities of a foreign company. Depositary receipts involve many of the same risks as those associated with direct investment in foreign securities. In addition, the underlying issuers of certain depositary receipts, particularly unsponsored or unregistered depositary receipts, are under no obligation to distribute shareholder communications to the holders of such receipts, or to pass through to them any voting rights with respect to the deposited securities.

In connection with its investments in foreign securities, the Fund also may enter into contracts with banks, brokers or dealers to purchase or sell securities or foreign currencies at a future date. A foreign currency forward exchange contract is a negotiated agreement between the contracting parties to exchange a specified amount of currency at a specified future time at a specified rate. The rate can be higher or lower than the spot rate between the currencies that are the subject of the contract. Foreign currency forward exchange contracts may be used to protect against uncertainty in the level of future foreign currency exchange rates or to gain or modify exposure to a particular currency. In addition, the Fund may use cross currency hedging or proxy hedging with respect to currencies in which the Fund has or expects to have portfolio or currency exposure. Cross currency and proxy hedges involve the sale of one currency against the positive exposure to a different currency and may be used for hedging purposes or to establish an active exposure to the exchange rate between any two currencies. To the extent hedged by the use of foreign currency forward exchange contracts, the precise matching of the foreign currency forward exchange contract amounts and the value of the securities involved will not generally be possible because the future value of such securities in foreign currencies will change as a consequence of market movements in the value of those securities between the date on which the contract is entered into and the date it matures. Furthermore, such transactions may reduce or preclude the opportunity for gain if the value of the currency should move in the direction opposite to the position taken. There is an additional risk to the extent that foreign currency forward exchange contracts create exposure to currencies in which the Fund's securities are not denominated. Unanticipated changes in currency prices may result in poorer overall performance for the Fund than if it had not entered into such contracts. The use of foreign currency forward exchange contracts involves the risk of loss from the insolvency or bankruptcy of the counterparty to the contract or the failure of the counterparty to make payments or otherwise comply with the terms of the contract.

**Derivatives**

The Fund may, but is not required to, use derivatives and other similar instruments for a variety of purposes, including hedging, risk management, portfolio management or to earn income. Derivative instruments used by the Fund will be counted towards the Fund's exposure in the types of securities listed herein to the extent they have economic characteristics similar to such securities. A derivative is a financial instrument whose value is based, in part, on the value of an underlying asset, interest rate, index or financial instrument. Prevailing interest rates and volatility levels, among other things, also affect the value of derivative instruments. Derivatives and other similar instruments often have risks similar to those of the underlying asset or instrument and may have additional risks, including imperfect correlation between the value of the derivative and the underlying asset, risks of default by the counterparty to certain transactions, magnification of losses incurred due to changes in the market value of the securities, instruments, indices or interest rates to which the derivative instrument relates, risks that the transactions may not be liquid, risks arising from margin and payment requirements, risks arising from mispricing or valuation complexity and operational and legal risks. The use of derivatives involves risks that are different from, and possibly greater than, the risks associated with other portfolio investments. Derivatives may involve the use of highly specialized instruments that require investment techniques and risk analyses different from those associated with other portfolio investments.

Certain derivative transactions may give rise to a form of leverage. Leverage magnifies the potential for gain and the risk of loss. Leverage associated with derivative transactions may cause the Fund to liquidate portfolio positions when it may not be advantageous to do so, or may cause the Fund to be more volatile than if the Fund had not been leveraged. Although the Adviser seeks to use derivatives to further the Fund's investment objective, there is no assurance that the use of derivatives will achieve this result.

The derivative instruments and techniques that the Fund may use include:

*Futures.* A futures contract is a standardized, exchange-traded agreement to buy or sell a specific quantity of an underlying asset, reference rate or index at a specific price at a specific future time. While the value of a futures contract tends to increase or decrease in tandem with the value of the underlying instrument, differences between the futures market and the market for the underlying asset may result in an imperfect correlation. Depending on the terms of the particular contract, futures contracts are settled through either physical delivery of the underlying instrument on the settlement date or by payment of a cash settlement amount on the settlement date. A decision as to whether, when and how to use futures contracts involves the exercise of skill and judgment and even a well-

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Mortgage Securities Trust (Con't)

conceived futures transaction may be unsuccessful because of market behavior or unexpected events. In addition to the derivatives risks discussed above, the prices of futures contracts can be highly volatile, using futures contracts can lower total return, and the potential loss from futures contracts can exceed the Fund's initial investment in such contracts. No assurance can be given that a liquid market will exist for any particular futures contract at any particular time. There is also the risk of loss by the Fund of margin deposits in the event of bankruptcy of a broker with which the Fund has open positions in the futures contract.

*Options.* If the Fund buys an option, it buys a legal contract giving it the right to buy or sell a specific amount of the underlying instrument, foreign currency or contract, such as a swap agreement or futures contract, on the underlying instrument or foreign currency at an agreed-upon price typically in exchange for a premium paid by the Fund. If the Fund sells an option, it sells to another person the right to buy from or sell to the Fund a specific amount of the underlying instrument, swap, foreign currency, or futures contract on the underlying instrument or foreign currency at an agreed-upon price during a period of time or on a specified date typically in exchange for a premium received by the Fund. When options are purchased over-the-counter ("OTC"), the Fund bears the risk that the counterparty that wrote the option will be unable or unwilling to perform its obligations under the option contract. Options may also be illiquid and the Fund may have difficulty closing out its position. A decision as to whether, when and how to use options involves the exercise of skill and judgment and even a well-conceived option transaction may be unsuccessful because of market behavior or unexpected events. The prices of options can be highly volatile and the use of options can lower total returns.

Investments in foreign currency options may substantially change the Fund's exposure to currency exchange rates and could result in losses to the Fund if currencies do not perform as the Adviser expects. There is a risk that such transactions may reduce or preclude the opportunity for gain if the value of the currency should move in the direction opposite to the position taken. The value of a foreign currency option is dependent upon the value of the underlying foreign currency relative to the U.S. dollar or other applicable foreign currency. The price of the option may vary with changes in the value of either or both currencies and has no relationship to the investment merits of a foreign security. Options on foreign currencies are affected by all of those factors that influence foreign exchange rates and foreign investment generally. Unanticipated changes in currency prices may result in losses to the Fund and poorer overall performance for the Fund than if it had not entered into such contracts. Options on foreign currencies are traded primarily in the OTC market, but may also be traded on U.S. and foreign exchanges.

Foreign currency options contracts may be used for hedging purposes or non-hedging purposes in pursuing the Fund's investment objective, such as when the Adviser anticipates that particular non-U.S. currencies will appreciate or depreciate in value, even though securities denominated in those currencies are not then held in the Fund's investment portfolio. Investing in foreign currencies for purposes of gaining from projected changes in exchange rates, as opposed to only hedging currency risks applicable to the Fund's holdings, further increases the Fund's exposure to foreign securities losses. There is no assurance that the Adviser's use of currency derivatives will benefit the Fund or that they will be, or can be, used at appropriate times.

*Swaps.* The Fund may enter into OTC swap contracts or cleared swap transactions. An OTC swap contract is an agreement between two parties pursuant to which the parties exchange payments at specified dates on the basis of a specified notional amount, with the payments calculated by reference to specified securities, indices, reference rates, currencies or other instruments. Typically swap agreements provide that when the period payment dates for both parties are the same, the payments are made on a net basis (i.e., the two payment streams are netted out, with only the net amount paid by one party to the other). The Fund's obligations or rights under a swap contract entered into on a net basis will generally be equal only to the net amount to be paid or received under the agreement, based on the relative values of the positions held by each party. Cleared swap transactions may help reduce counterparty credit risk. In a cleared swap, the Fund's ultimate counterparty is a clearinghouse rather than a swap dealer, bank or other financial institution. OTC swap agreements are not entered into or traded on exchanges and often there is no central clearing or guaranty function for swaps. These OTC swaps are often subject to credit risk or the risk of default or non-performance by the counterparty. Certain swaps have begun trading on exchanges called swap execution facilities. Exchange trading is expected to increase liquidity of swaps trading. Both OTC and cleared swaps could result in losses if interest rates, foreign currency exchange rates or other factors are not correctly anticipated by the Fund or if the reference index, security or investments do not perform as expected. The Dodd-Frank Wall Street Reform and Consumer Protection Act and related regulatory developments require the clearing and exchange trading of certain standardized swap transactions. Mandatory exchange-trading and clearing is occurring on a phased-in basis. The Fund may pay fees or incur costs each time it enters into, amends or terminates a swap agreement.

The Fund's use of swaps may include those based on the credit of an underlying security, commonly referred to as "credit default swaps." Where the Fund is the buyer of a credit default swap contract, it would typically be entitled to receive the par (or other agreed-upon) value of a referenced debt obligation from the counterparty to the contract only in the event of a default or similar event by a third-party on the debt obligation. If no default occurs, the Fund would have paid to the counterparty a periodic stream of payments over the term of the contract and received no benefit from the contract. When the Fund is the seller of a credit default swap contract, it typically receives the stream of payments but is obligated to pay an amount equal to the par (or other agreed-upon) value of a referenced debt obligation upon the default or similar event of the issuer of the referenced debt obligation.

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Mortgage Securities Trust (Con't)

**Other Risks.** The performance of the Fund also will depend on whether or not the Adviser is successful in applying the Fund's investment strategies. The Fund is also subject to other risks from its permissible investments, including the risks associated with its investments in municipal securities. For more information about this risk, see "Additional Risk Information."

**Additional Risk Information**

This section provides additional information relating to the risks of investing in the Fund.

**LIBOR Discontinuance or Unavailability Risk.**

LIBOR is intended to represent the rate at which contributing banks may obtain short-term borrowings from each other in the London interbank market. The Financial Conduct Authority (the "FCA"), which is the regulatory authority that oversees financial services firms, financial markets in the U.K. and the administrator of LIBOR, announced that, after the end of 2021, one-week and two-month U.S. Dollar LIBOR and all non-U.S. Dollar LIBOR settings have either ended or are no longer representative of the underlying market they seek to measure. The FCA also announced that the most commonly used U.S. Dollar LIBOR settings may continue to be provided on a representative basis until mid-2023. However, in connection with supervisory guidance from regulators, some regulated entities may no longer enter into most new LIBOR-based contracts. As a result of the foregoing, LIBOR may no longer be available or no longer deemed an appropriate reference rate upon which to determine the interest rate on or impacting certain derivatives and other instruments or investments held by the Fund. In light of this eventuality, public and private sector industry initiatives are currently underway to establish new or alternative reference rates to be used in place of LIBOR. There is no assurance that the composition or characteristics of any such alternative reference rate will be similar to or produce the same value or economic equivalence as LIBOR or that it will have the same volume or liquidity as did LIBOR prior to its discontinuance or unavailability, which may affect the value or liquidity or return on certain of the Fund's investments and result in costs incurred in connection with closing out positions and entering into new trades.

Neither the effect of the LIBOR transition process nor its ultimate success can yet be known. The transition process might lead to increased volatility and illiquidity in markets for, and reduce the effectiveness of new hedges placed against, instruments whose terms currently include LIBOR. While some existing LIBOR-based instruments may contemplate a scenario where LIBOR is no longer available by providing for an alternative rate-setting methodology, there may be significant uncertainty regarding the effectiveness of any such alternative methodologies to replicate LIBOR. Not all existing LIBOR-based instruments may have alternative rate-setting provisions and there remains uncertainty regarding the willingness and ability of issuers to add alternative rate-setting provisions in certain existing instruments. Although state and federal statutes have been enacted to address difficult LIBOR transition issues, the application and effect of these statutes are uncertain. In addition, a liquid market for newly-issued instruments that use a reference rate other than LIBOR is still developing. There may also be challenges for the Fund to enter into hedging transactions against such newly-issued instruments until a market for such hedging transactions develops. All of the aforementioned may adversely affect the Fund's investments (including their volatility, value and liquidity) and, as a result, the performance or NAV.

**Loan-Related Investments**

Loan-related investments may include, without limitation, public bank loans made by banks or other financial institutions and loan participations and assignments. Such investments may be rated investment grade or below investment grade. To the extent these investments are second lien loans, which are lower in priority to senior loans, but have seniority in a company's capital structure to other liabilities, the company would be required to pay down these second lien loans prior to other lower-ranked claims on their assets. With respect to loan participations, the Fund may not always have direct recourse against a borrower if the borrower fails to pay scheduled principal and/or interest; may be subject to greater delays, expenses and risks than if the Fund had purchased a direct obligation of the borrower; and may be regarded as the creditor of the agent lender (rather than the borrower), subjecting the Fund to the creditworthiness of that lender as well.

Certain loans may be illiquid, meaning the Fund may not be able to sell them quickly at a fair price. Illiquid securities are also difficult to value. To the extent a loan has been deemed illiquid, it will be subject to the Fund's restrictions on investment in illiquid securities. The secondary market for loans may be subject to irregular trading activity, wide bid/ask spreads and extended trade settlement periods. Because some loans may have a more limited secondary market, liquidity and valuation risk is more pronounced for the Fund than for funds that invest primarily in other types of fixed-income instruments or equity securities. In the case of extended trade settlement periods, the Fund may not receive the proceeds from the sale of a loan for a period after the sale. As a result, sale proceeds related to the sale of loans may not be available to make additional investments or to meet the Fund's redemption obligations for a period after the sale of the loans and, as a result, the Fund may have to sell other investments or engage in borrowing transactions, such as borrowing from its credit facility, if necessary to raise cash to meet its obligations. Loans are subject to the risk of default in the payment of interest or principal, which would result in a reduction of income to the Fund and a potential decrease in the Fund's NAV. Although a loan may be fully collateralized at the time of acquisition, the collateral may decline in value, be relatively illiquid or lose all or substantially all of its value subsequent to investment. Certain loans may not be considered securities under the federal securities laws and, therefore, investments in such loans may not be subject to certain protections under those laws.

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Mortgage Securities Trust (Con't)

The risk of default will increase in the event of an economic downturn or a substantial increase in interest rates. Loans that are rated below investment grade share the same risks of other below investment grade securities. Because loans in which the Fund may invest could rank lower in priority of payment to senior loans, they present a greater degree of investment risk due to the fact that the cash flow or other property of the borrower securing the loan may be insufficient to meet scheduled payments after meeting the senior secured payment obligations of the borrower. These loans may exhibit greater price volatility as well. There is less readily available, reliable information about most loan investments than is the case for many other types of securities.

**Municipals**

Municipal securities (also referred to as municipal obligations) include debt obligations of states, territories or possessions of the United States and the District of Columbia and their political subdivisions, agencies and instrumentalities, such as local or regional governments. The income on municipal securities is generally exempt from federal income tax at the time of issuance, in the opinion of bond counsel or other counsel to the issuers of such securities. However, the Fund may purchase municipal securities that pay interest that is subject to the federal alternative minimum tax, and municipal securities on which the interest payments are taxable. These securities typically are "general obligation" or "revenue" bonds, notes or commercial paper, including participations in lease obligations and installment purchase contracts of municipalities. General obligation bonds are secured by the issuer's full faith and credit including its taxing power for payment of principal and interest. Revenue bonds, however, are generally payable from a specific revenue source. They are issued for a wide variety of projects such as financing public utilities, hospitals, housing, airports, highways and educational facilities. These types of bonds involve the risk that the tax or other revenues so derived will not be sufficient to meet interest and or principal payment obligations. These obligations may have fixed, variable or floating rates.

Because the Fund may invests in municipal securities, the Fund may be affected significantly by the economic, regulatory, legislative, tax or political developments affecting the ability of issuers of municipal securities to pay interest or repay principal. The risks of municipal securities generally depend on the financial and credit status of the issuer and may rely on a specific stream of revenue associated with a project or other revenue source. Thus, adverse developments related to a municipality's ability to raise revenue, including through its taxing authority, or the failure of specific revenues to materialize would negatively impact such investments. Changes in the financial health of an issuer of municipal securities may make it difficult for the issuer to make interest and principal payments when due. Some municipalities have had significant financial problems recently, and these and other municipalities could, potentially, continue to experience significant financial problems resulting from lower tax revenues and/or decreased aid from state and local governments in the event of an economic downturn. In addition, adverse legislative, tax, regulatory, demographic or political changes may negatively impact the Fund's investments in municipal securities. These events could decrease the Fund's income and/or adversely affect the Fund's performance and investments. Municipal securities also involve the risk that an issuer may call securities for redemption, which could force the Fund to reinvest the proceeds at a lower rate of interest, and the value of municipal securities may be affected by the rights of municipal security holders.

Municipal securities may be more susceptible to downgrades, defaults or loss of tax or other revenue during recessions or similar periods of economic stress. Factors contributing to the financial stress on municipalities may include lower property tax collections as a result of lower home values, lower sales tax revenue as a result of consumers cutting back spending and lower income tax revenue as a result of a higher unemployment rate. In addition, because some municipal obligations may be secured or guaranteed by banks and other institutions, the risk to the Fund associated with investments in such municipal securities 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 occur, the value of the security could decrease or the value could be lost entirely, and it may be difficult or impossible for the Fund to sell the security at the time and the price that normally prevails in the market.

For example, recent public health emergencies have significantly stressed the financial resources of many municipalities and other issuers of municipal securities, which may impair their ability to meet their financial obligations and may harm the value or liquidity of the Fund's investments in municipal securities (or the income generated by such investments). In particular, responses by municipalities to recent public health emergencies have caused disruptions in business activities. These and other effects of recent public health emergencies, such as increased unemployment levels, have impacted tax and other revenues of municipalities and other issuers of municipal securities and the financial conditions of such issuers. As a result, there is an increased budgetary and financial pressure on municipalities and other issuers of municipal securities and heightened risk of default or other adverse credit or similar events for issuers of municipal securities, which would adversely impact the Fund's investments.

In addition, the ability of an issuer to make payments or repay interest may be affected by litigation or bankruptcy. In the event of bankruptcy of such an issuer, the Fund investing in the issuer's securities could experience delays in collecting principal and interest, and the Fund may not, in all circumstances, be able to collect all principal and interest to which it is entitled. To enforce its rights in the event of a default in the payment of interest or repayment of principal, or both, the Fund may, in some instances, take possession of, and manage, the assets securing the issuer's obligations on such securities, which may increase the Fund's operating expenses. Any income derived from the Fund's ownership or operation of such assets may not be tax-exempt. Municipal securities are subject to, among other risks, credit and interest rate risk and market and geopolitical risk.

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Mortgage Securities Trust (Con't)

Because many municipal securities are issued to finance similar projects (such as those relating to education, health care, housing, transportation, and utilities), conditions in those sectors may affect the overall municipal securities market. In addition, changes in the financial condition of an individual municipal issuer can affect the overall municipal market. Municipal securities backed by current or anticipated revenues from a specific project or specific assets can be negatively affected by the discontinuance of the supporting taxation or the inability to collect revenues for the specific project or specific assets.

Some municipal securities are subject to the risk that the U.S. Internal Revenue Service ("IRS") may determine that an issuer has not complied with applicable tax requirements (or the occurrence of other adverse tax developments) and that interest from the municipal security is taxable, which may result in a significant decline in the value of the security. In addition, interest on municipal obligations, while generally exempt from federal income tax, may not be exempt from the federal alternative minimum tax. Municipal securities may be less liquid than taxable bonds and there may be less publicly available information on the financial condition of municipal security issuers than for issuers of other securities, and the investment performance of the Fund investing in municipal securities may therefore be more dependent on the analytical abilities of the Adviser than if the Fund held other types of investments such as stocks or taxable bonds. The secondary market for municipal securities also tends to be less well developed or liquid than many other securities markets, which may adversely affect the Fund's ability to sell municipal securities it holds at attractive prices or value municipal securities. In addition, the demand for municipal securities is strongly influenced by the value of tax-exempt income to investors and lower income tax rates could reduce the advantage of owning municipal securities, which may also adversely affect the value and liquidity of municipal securities.

**Large Shareholder Transactions Risk**

The Fund may experience adverse effects when certain shareholders, or shareholders collectively, purchase or redeem large amounts of shares of the Fund. Such larger than normal redemptions may cause the Fund to sell portfolio securities at times when it would not otherwise do so, which may negatively impact the Fund's NAV and liquidity. Similarly, large Fund share purchases may adversely affect the Fund's performance to the extent that the Fund is delayed in investing new cash and is required to maintain a larger cash position than it ordinarily would. These transactions may also accelerate the realization of taxable income to shareholders if such sales of investments resulted in gains, and may also increase transaction costs. 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. Although large shareholder transactions may be more frequent under certain circumstances, the Fund is generally subject to the risk that shareholders can purchase or redeem a significant percentage of Fund shares at any time.

**Investment Discretion**

In pursuing the Fund's investment objective, the Adviser has considerable leeway in deciding which investments it buys, holds or sells on a day-to-day basis, and which trading strategies it uses. For example, the Adviser, in its discretion, may determine to use some permitted trading strategies while not using others. The success or failure of such decisions will affect the Fund's performance.

**Temporary Defensive Investments**

When the Adviser believes that changes in market, economic, political or other conditions warrant, the Fund may invest without limit in cash, cash equivalents or other fixed-income securities for temporary defensive purposes that may be inconsistent with the Fund's principal investment strategies. If the Adviser incorrectly predicts the effects of these changes, such defensive investments may adversely affect the Fund's performance and the Fund may not achieve its investment objective.

**Portfolio Turnover**

Consistent with its investment policies, the Fund will purchase and sell securities without regard to the effect on portfolio turnover. Higher portfolio turnover (e.g., over 100% per year) will cause the Fund to incur additional transaction costs and may result in taxable gains being passed through to shareholders. The Fund may engage in frequent trading of securities to achieve its investment objective.

Portfolio Holdings

A description of the Fund's policies and procedures with respect to the disclosure of the Fund's portfolio securities is available in the Fund's SAI.

Fund Management

The Fund has retained the Adviser—Morgan Stanley Investment Management Inc.—to provide investment advisory services. The Adviser is a wholly-owned subsidiary of Morgan Stanley (NYSE: "MS"), a preeminent global financial services firm engaged in securities trading and brokerage activities, as well as providing investment banking, research and analysis, financing and financial advisory services. The Adviser, together with its affiliated asset management companies, had approximately $1.3 trillion in assets under management or supervision as of December 31, 2022. The Adviser's address is 522 Fifth Avenue, New York, NY 10036.

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Mortgage Securities Trust (Con't)

The Fund is managed by members of the Fixed Income organization. The team consists of portfolio managers, analysts and traders. Current members of the team jointly and primarily responsible for the day-to-day management of the Fund's portfolio are Gregory Finck and Matt Buckley.

Mr. Finck has been associated with the Adviser in an investment management capacity since December 2014. Prior to joining the Adviser, Mr. Finck was a managing director at Fortress Investment Group from 2008 to 2014. Prior to joining Fortress, Mr. Finck was a managing director at Goldman Sachs where he worked in the mortgage trading division from 1992 until 2008.

Mr. Buckley has been associated with the Adviser or its affiliates since September 2005. Mr. Buckley has worked on securitized exposures in multi-sector portfolios as a senior investor since 2005 and began his career in the investment industry in 1998.

The Fund's SAI provides additional information about the portfolio managers' compensation structure, other accounts managed by the portfolio managers and the portfolio managers' ownership of securities in the Fund.

The composition of the team may change from time to time.

The Fund pays the Adviser a monthly advisory fee as full compensation for the services and facilities furnished to the Fund, and for Fund expenses assumed by the Adviser. The fee is based on the Fund's daily net assets. For the fiscal year ended October 31, 2022, the Fund paid total investment advisory compensation (net of fee waivers, if applicable) amounting to 0.29% of the Fund's average daily net assets.

Morgan Stanley Investment Management Inc., as the Adviser and the Administrator, has agreed to reduce its advisory fee, its administration fee, and/or reimburse the Fund, if necessary, if such fees would cause the total annual operating expenses of the Fund to exceed 1.00% for Class A, 1.30% for Class L, 0.70% for Class I, 1.80% for Class C and 0.65% for Class R6. In determining the actual amount of fee waiver and/or expense reimbursement for the Fund, if any, the Adviser and Administrator exclude from total annual operating expenses, acquired fund fees and expenses (as applicable), certain investment related expenses, taxes, interest and other extraordinary expenses (including litigation). The fee waivers and/or expense reimbursements will continue for at least one year from the date of this Prospectus or until such time as the Fund's Board of Trustees acts to discontinue all or a portion of such waivers and/or reimbursements when it deems such action is appropriate. The Adviser and Administrator may make additional voluntary fee waivers and/or expense reimbursements. The Adviser and Administrator may discontinue these voluntary fee waivers and/or expense reimbursements at any time in the future.

The Fund's annual operating expenses may vary throughout the period and from year to year. The Fund's actual expenses may be different than the expenses listed in the Fund's fee and expense table based upon the extent and amount of a fee waiver and/or expense reimbursement.

A discussion regarding the Board of Trustees' approval of the investment advisory agreement is available in the Fund's Annual Report to Shareholders for the fiscal year ended October 31, 2022.

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Morgan Stanley Prospectus \| **Shareholder Information**

Shareholder Information

**Pricing Fund Shares**

The NAV of the Fund (excluding sales charges) is based on the value of the Fund's portfolio securities. While the assets of each class are invested in a single portfolio of securities, the NAV of each class will differ because the classes have different ongoing fees.

The NAV of the Fund is determined once daily on each business day as of the close of regular trading on the NYSE (normally 4:00 p.m. Eastern time) or such other times as the NYSE may officially close (the "Pricing Time"). Shares generally will not be priced on any day that the NYSE is closed, although Fund shares may be priced on such days if the Securities Industry and Financial Markets Association ("SIFMA") recommends that the bond markets remain open for all or part of the day. On any business day when SIFMA recommends that the bond markets close early, the Fund reserves the right to close at or prior to the SIFMA recommended closing time. If the Fund does so, it will cease granting same day credit for purchase and redemption orders received after the Fund's closing time and credit will be given on the next business day. If the NYSE is closed due to inclement weather, technology problems or any other reason on a day it would normally be open for business, or the NYSE has an unscheduled early closing on a day it has opened for business, the Fund reserves the right to treat such day as a business day and accept purchase and redemption orders until, and calculate its NAV as of, the normally scheduled close of regular trading on the NYSE for that day, so long as the Adviser believes there generally remains an adequate market to obtain reliable and accurate market quotations. The Fund may also elect to remain open and price its shares on days when the NYSE is closed but the primary securities markets on which the Fund's securities trade remain open. Trading of securities that are primarily listed on foreign exchanges may take place on weekends and other days when the Fund does not price its shares. Therefore, to the extent, if any, that the Fund invests in securities primarily listed on foreign exchanges, the value of the Fund's portfolio securities may change on days when you will not be able to purchase or sell your shares.

The Fund relies on various sources to calculate its NAV. The ability of the Fund's provider of administrative services to calculate the NAV per share of the Fund is subject to operational risks associated with processing or human errors, systems or technology failures, cyber attacks and errors caused by third party service providers, data sources, or trading counterparties. Such failures may result in delays in the calculation of the Fund's NAV and/or the inability to calculate NAV over extended time periods. A Fund may be unable to recover any losses associated with such failures. In addition, if the third party service providers and/or data sources upon which a Fund directly or indirectly relies to calculate its NAV or price individual securities are unavailable or otherwise unable to calculate the NAV correctly, it may be necessary for alternative procedures to be utilized to price the securities at the time of determining the Fund's NAV.

The value of the Fund's portfolio securities is based on the securities' market price when available. When no market quotations are readily available for a security or other asset, including circumstances under which the Adviser determines that a market quotation is not accurate, fair value for the security or other asset will be determined in good faith using methods approved by the Fund's Board of Directors.

In addition, with respect to securities that primarily are listed on foreign exchanges, when an event occurs after the close of such exchanges that is likely to have changed the value of the securities (e.g., a percentage change in value of one or more U.S. securities indices in excess of specified thresholds), such securities will be valued at their fair value, as determined under procedures established by the Fund's Board of Trustees. Securities also may be fair valued in the event of a significant development affecting a country or region or an issuer-specific development that is likely to have changed the value of the security.

In these cases, the Fund's NAV will reflect certain portfolio securities' fair value rather than their market price. Fair value pricing involves subjective judgment and it is possible that the fair value determined for a security or other asset is materially different than the value that could be realized upon the sale of that security or asset.

To the extent the Fund invests in open-end management companies (other than exchange-traded funds) that are registered under the 1940 Act, the Fund's NAV is calculated based in relevant part upon the NAV of such funds. The prospectuses for such funds explain the circumstances under which they will use fair value pricing and its effects.

&nbsp;&nbsp;&nbsp; ***Contacting a Morgan Stanley Financial Advisor***<br> *If you are new to the Morgan Stanley Funds and would like to contact a Morgan Stanley Financial Advisor, access our office locator on our Internet site at: www.morganstanley.com*<br>

**How to Buy Shares**

*The Fund has suspended offering Class L shares of the Fund for sale to all investors. The Class L shareholders of the Fund do not have the option of purchasing additional Class L shares. However, the existing Class L shareholders may invest in additional Class L shares through reinvestment of dividends and distributions.*

Because every investor has different immediate financial needs and long-term investment goals, the Fund currently offers investors four classes of shares: Classes A, I, C and IS. Class I and Class R6 shares are only offered to a limited group of investors. Each class of shares offers a distinct structure of sales charges, distribution and service fees, and other features that are designed to address a variety

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Morgan Stanley Prospectus \| **Shareholder Information**

Shareholder Information (Con't)

of needs. Your Financial Intermediary can help you decide which class may be most appropriate for you. When purchasing Fund shares, you must specify which class of shares you wish to purchase.

**Minimum Investment Amounts.** The minimum investment amounts for Class A shares and Class C shares are as follows:

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| | | |
|:---|:---|:---|
|  | **Minimum Investment** | **Minimum Investment** |
| **Investment Options** | **Initial** | **Additional** |
| Regular Account | $1000 | $100 |
| Individual Retirement Account | $1000 | $100 |

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The minimum investment amount is generally $1 million for Class I shares. To be eligible to purchase Class I shares, you must qualify under one of the investor categories specified in the "Shareholder Information—Share Class Arrangements" section of this Prospectus.

The Fund no longer accepts direct purchases of Class C shares by accounts for which no broker-dealer or other Financial Intermediary is specified. Any direct purchase received by the Fund's Transfer Agent (as defined below) for Class C shares for such accounts will automatically be invested in Class A shares of the Fund.

The minimum initial investment amounts may be waived for Class A, Class I and Class C by the Adviser for the following categories: (1) sales through banks, broker-dealers and other financial institutions (including registered investment advisers and financial planners) purchasing shares on behalf of their clients in (i) discretionary and non-discretionary advisory programs, (ii) asset allocation programs, (iii) other programs in which the client pays an asset-based fee for advice or for executing transactions in Fund shares or for otherwise participating in the program or (iv) certain other investment programs that do not charge an asset-based fee, as outlined in an agreement between the Distributor and such financial institution; (2) sales through a Financial Intermediary that has entered into an agreement with the Distributor to offer Fund shares to self-directed investment brokerage accounts, which may or may not charge a transaction fee; (3) qualified state tuition plans described in Section 529 of the Code (subject to all applicable terms and conditions); (4) defined contribution, defined benefit and other employer-sponsored employee benefit plans, whether or not qualified under the Code, where such plans purchase Class A, Class I and/or Class C shares through a plan-level or omnibus account sponsored or serviced by a Financial Intermediary that has entered into an agreement with the Fund, the Distributor and/or the Adviser pursuant to which such Class A, Class I and/or Class C shares are available to such plans; (5) certain retirement and deferred compensation programs established by Morgan Stanley Investment Management or its affiliates for their employees or the Fund's Trustees; (6) current or retired directors, officers and employees of Morgan Stanley and any of its subsidiaries, such persons' spouses, and children under the age of 21, and trust accounts for which any of such persons is a beneficiary; (7) current or retired Directors or Trustees of the Morgan Stanley Funds, such persons' spouses, and children under the age of 21, and trust accounts for which any of such persons is a beneficiary; (8) certain other registered open-end investment companies whose shares are distributed by the Distributor; (9) investments made in connection with certain mergers and/or reorganizations as approved by the Adviser; (10) the reinvestment of dividends from Class A, Class I or Class C shares of the Fund in additional shares of the same class of the Fund; or (11) certain other institutional investors based on assets under management or other considerations at the discretion of the Adviser.

Certain waivers may not be available depending on the policies at certain Financial Intermediaries. Each Financial Intermediary may also have its own rules about minimum initial investment amounts, minimum account balances, share transactions and limits on the number of share transactions you are permitted to make in a given time period. When purchasing shares through a Financial Intermediary, you may not benefit from certain policies and procedures of the Fund as your eligibility may be dependent upon the policies and procedures of your Financial Intermediary, including those regarding reductions of sales charges. Please consult your Financial Intermediary for more information.

To purchase Class R6 shares, an investor must meet a minimum initial investment of $5 million or be a defined contribution, defined benefit or other employer sponsored employee benefit plan, in each case provided that the plan trades through an intermediary that combines its clients' assets in a single omnibus account, whether or not such plan is qualified under the Code and in each case subject to the discretion of the Adviser. Omnibus trades of $5 million or more shall be accepted from certain platforms, including: (i) banks and trust companies; (ii) insurance companies; and (iii) registered investment advisory firms. The $5 million minimum initial investment amount may be waived for Class R6 shares purchased by or through: (1) certain registered open-end investment companies whose shares are distributed by the Distributor; or (2) investments made in connection with certain mergers and/or reorganizations as approved by the Adviser.

The Adviser, in its sole discretion, may waive a minimum initial investment amount in certain cases.

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Shareholder Information (Con't)

**Purchasing Shares Through a Financial Intermediary.** You may open a new account and purchase Fund shares through your Financial Intermediary. Your Financial Intermediary will assist you with the procedures to invest in shares of the Fund. Your Financial Intermediary may charge transaction-based or other fees in connection with the purchase or sale of Fund shares. Please consult your Financial Intermediary for more information regarding any such fees and for purchase instructions.

With respect to sales through Financial Intermediaries, no offers or sales of Fund shares may be made in any foreign jurisdiction, except with the consent of the Distributor.

**Purchasing Shares Directly from the Fund.**

Initial Purchase

You may open a new account, subject to acceptance by the Fund, and purchase shares of the Fund by completing and signing a New Account Application provided by SS&C Global Investor and Distribution Solutions, Inc. (the "Transfer Agent"), or Eaton Vance Management, the Fund's co-transfer agent (the "Co-Transfer Agent"), which you can obtain by calling Morgan Stanley Shareholder Services at 1-800-869-6397 (our automated telephone system (which is generally accessible 24 hours a day, seven days a week)) and mailing it to Morgan Stanley Mortgage Securities Trust, c/o SS&C Global Investor and Distribution Solutions, Inc., P.O. Box 219804, Kansas City, MO 64121-9804.

After submitting a completed New Account Application to the Transfer Agent, you may wire Federal Funds (monies credited by a Federal Reserve Bank) to State Street Bank and Trust Company (the "Custodian"). You should instruct your bank to send a Federal Funds wire in a specified amount to the Custodian using the following wire instructions:

State Street Bank and Trust Company

One Lincoln Street

Boston, MA 02111-2101

ABA #011000028

DDA #99060238

Attn: Morgan Stanley Funds Subscription Account

Ref: (Fund Name, Account Number, Account Name)

The Fund no longer accepts direct purchases of Class C shares by accounts for which no broker-dealer or other Financial Intermediary is specified (i.e., such purchasers are not eligible investors for Class C shares). Any direct purchase received by the Transfer Agent for Class C shares for such accounts will automatically be invested in Class A shares of the Fund. In addition, Class C shares held in an account for which no broker-dealer or other Financial Intermediary is specified and which are not subject to a CDSC will periodically be converted to Class A shares of the same Fund.

**Additional Investments.** You may purchase additional Fund shares for your account at any time by contacting your Financial Intermediary or by contacting the Fund directly. For additional purchases directly from the Fund, you should write a "letter of instruction" that includes your account name, account number, the Fund name and the class selected, signed by the account owner(s), to assure proper crediting to your account. After mailing a "letter of instruction," you may wire Federal Funds by following the instructions under "Initial Purchase."

**General.** To help the U.S. Government fight the funding of terrorism and money laundering activities, federal law requires all financial institutions to obtain, verify and record information that identifies each person who opens an account. What this means to you: when you open an account, we will ask your name, address, date of birth and other information that will allow us to identify you. If we are unable to verify your identity, we reserve the right to restrict additional transactions and/or liquidate your account at the next calculated NAV after your account is closed (less any applicable sales/account charges and/or tax penalties) or take any other action required by law. In accordance with federal law requirements, the Fund has implemented an anti-money laundering compliance program, which includes the designation of an anti-money laundering compliance officer.

When you buy Fund shares, the shares (plus any applicable sales charge) will be purchased at the next share price calculated after we receive your purchase order in good order. Purchase orders not received in good order prior to Pricing Time will be executed at the NAV next determined after the purchase order is received in good order. Certain institutional investors and financial institutions have entered into arrangements with the Fund, the Adviser and/or the Distributor pursuant to which they may place orders prior to the Pricing Time, but make payment in Federal Funds for those shares up to three days after the purchase order is placed, depending on the arrangement. We reserve the right to reject any order for the purchase of Fund shares for any reason.

The Fund may suspend the offering of shares, or any class of shares, or reject any purchase orders when we think it is in the best interest of the Fund.

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Morgan Stanley Prospectus \| **Shareholder Information**

Shareholder Information (Con't)

**How to Exchange Shares**

**Permissible Fund Exchanges.** You may exchange shares of any class of the Fund for the same class of shares of any mutual fund (excluding money market funds) sponsored and advised by the Adviser (each, a "Morgan Stanley Multi-Class Fund"), if available, without the imposition of an exchange fee. Class L shares of the Fund may be exchanged for Class L shares of any Morgan Stanley Multi-Class Fund, even though Class L shares are closed to investors. In addition, you may exchange shares of any class of the Fund for shares of Morgan Stanley California Tax-Free Daily Income Trust, Morgan Stanley Tax-Free Daily Income Trust and Morgan Stanley U.S. Government Money Market Trust (each, a "Morgan Stanley Money Market Fund" and, together with the Morgan Stanley Multi-Class Funds, the "Morgan Stanley Funds"), if available, without the imposition of an exchange fee. Because purchases of Class A shares of Morgan Stanley Institutional Fund Trust Ultra-Short Income and Ultra-Short Municipal Income Portfolios are not subject to a sales charge, and purchases of Class A shares of Morgan Stanley Institutional Fund Trust Short Duration Income Portfolio are subject to a reduced sales charge, you may be subject to the payment of a sales charge by your Financial Intermediary, at time of exchange into Class A shares of a Morgan Stanley Fund, based on the amount that you would have owed if you directly purchased Class A shares of that Morgan Stanley Fund (less any sales charge previously paid in connection with shares exchanged for such shares of Morgan Stanley Institutional Fund Trust Short Duration Income, Ultra-Short Income or Ultra-Short Municipal Income Portfolios, as applicable). Class L shares of the Fund that are exchanged for shares of a Morgan Stanley Money Market Fund may be subsequently re-exchanged for Class L shares of the Fund or any other Morgan Stanley Multi-Class Fund (even though Class L shares are closed to investors).

Exchanges are effected based on the respective NAVs of the applicable Morgan Stanley Fund (subject to any applicable redemption fee) and in accordance with the eligibility requirements of such Fund. To obtain a prospectus for another Morgan Stanley Fund, contact your Financial Intermediary or call Morgan Stanley Shareholder Services at 1-800-869-6397. If you purchased Fund shares through a Financial Intermediary, certain Morgan Stanley Funds may be unavailable for exchange. Contact your Financial Intermediary for more information regarding the exchange privilege and to determine which Morgan Stanley Funds are available for exchange. The current prospectus for each Morgan Stanley Fund describes its investment objective(s), policies, investment minimums and applicable sales charges, and should be read before investing. Since exchanges are available only into continuously offered Morgan Stanley Funds, exchanges are generally not available into Morgan Stanley Funds or classes of Morgan Stanley Funds that are not currently being offered for purchase (except with respect to exchanges of Class L shares as noted above).

There are special considerations when you exchange Class A and Class C shares of the Fund that are subject to a CDSC. When determining the length of time you held the Class A or Class C shares, any period (starting at the end of the month) during which you held such shares will be counted. In addition, any period (starting at the end of the month) during which you held (i) Class A or Class C shares of a Morgan Stanley Multi-Class Fund or (ii) shares of a Morgan Stanley Money Market Fund, any of which you acquired in an exchange from such Class A or Class C shares of the applicable Fund, will also be counted; however, if you sell shares of (a) the Morgan Stanley Multi-Class Fund or (b) the Morgan Stanley Money Market Fund, before the expiration of the CDSC "holding period," you will be charged the CDSC applicable to such shares.

You will be subject to the same minimum initial investment and account size as an initial purchase. Your exchange price will be the price calculated at the next Pricing Time after the Morgan Stanley Fund receives your exchange order. The Morgan Stanley Fund, in its sole discretion, may waive the minimum initial investment amount in certain cases. The Fund may terminate or revise the exchange privilege upon required notice or in certain cases without notice. The Fund reserves the right to reject an exchange order for any reason.

**Exchange Procedures.** You can process an exchange by contacting your Financial Intermediary. You may also write the Transfer Agent or call toll-free 1-800-869-6397 to place an exchange order.

Exchange requests received on a business day (prior to the time shares of the funds involved in the request are priced) will be processed on the date of receipt. "Processing" a request means that shares of the Fund that you are exchanging will be redeemed and shares of the Morgan Stanley Fund that you are purchasing will be purchased at the NAV next determined on the date of receipt. Exchange requests received on a business day after the time that shares of the funds involved in the request are priced will be processed on the next business day in the manner described herein.

The Fund may terminate or revise the exchange privilege upon required notice or in certain cases without notice. See "Limitations on Exchanges." For direct accounts, the check writing privilege is not available for Morgan Stanley Money Market Fund shares you acquire in an exchange from a non-money market fund. If you are investing through a financial advisor, check with your advisor regarding the availability of check writing privileges.

**Telephone Exchanges.** Morgan Stanley (and its subsidiaries) and the Fund employ procedures considered by them to be reasonable to confirm that instructions communicated by telephone are genuine. Such procedures may include requiring certain personal identification information prior to acting upon telephone instructions, tape-recording telephone communications and providing written confirmation of instructions communicated by telephone. If reasonable procedures are employed, neither Morgan Stanley

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Morgan Stanley Prospectus \| **Shareholder Information**

Shareholder Information (Con't)

nor the Fund will be liable for following telephone instructions which it reasonably believes to be genuine. Telephone exchanges may not be available if you cannot reach Morgan Stanley Shareholder Services by telephone, whether because all telephone lines are busy or for any other reason; in such case, a shareholder would have to use the Fund's other exchange procedures described in this section.

Telephone instructions will be accepted if received by Morgan Stanley Shareholder Services between 9:00 a.m. and 4:00 p.m. Eastern time on any day the NYSE is open for business. On any business day that the NYSE closes early, or when SIFMA recommends that the securities markets close early, the Fund may close early and purchase orders received after such earlier closing times will be processed the following business day. During periods of drastic economic or market changes, it is possible that the telephone exchange procedures may be difficult to implement, although this has not been the case with the Fund in the past.

You automatically have the telephone exchange privilege unless you indicate otherwise by checking the applicable box on the New Account Application. You may also opt out of telephone privileges at any time by contacting Morgan Stanley Shareholder Services at 1-800-869-6397. If you hold share certificates, no exchanges may be processed until we have received all applicable share certificates.

**Margin Accounts.** If you have pledged your Fund shares in a margin account, contact your Financial Intermediary regarding restrictions on the exchange of such shares.

**Tax Considerations of Exchanges.** If you exchange shares of the Fund for shares of another Morgan Stanley Fund, there are important tax considerations. For tax purposes, the exchange out of the Fund is considered a sale of Fund shares and the exchange into the other fund is considered a purchase. As a result, you may realize a capital gain or loss.

You should review the "Shareholder Information—Taxes" section and consult your own tax professional about the tax consequences of an exchange.

**Limitations on Exchanges.** Certain patterns of past exchanges and/or purchase or sale transactions involving the Fund or other Morgan Stanley Funds may result in the Fund rejecting, limiting or prohibiting, at its sole discretion, and without prior notice, additional purchases and/or exchanges and may result in a shareholder's account being closed. Determinations in this regard may be based on the frequency or dollar amount of previous exchanges or purchase or sale transactions. The Fund reserves the right to reject an exchange request for any reason.

**CDSC Calculations on Exchanges.** See the "Shareholder Information—Share Class Arrangements" section of this Prospectus for a discussion of how applicable CDSCs are calculated for shares of one Morgan Stanley Fund that are exchanged for shares of another.

For further information regarding exchange privileges, you should contact your Financial Intermediary or call toll-free 1-800-869-6397.

**How to Sell Shares**

You can sell some or all of your Fund shares at any time. If you sell Class A or Class C shares, your net sale proceeds are reduced by the amount of any applicable CDSC. Your shares will be sold at the next price calculated after we receive your order to sell as described below.

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| | |
|:---|:---|
| **Options** | **Procedures** |
| Contact Your Morgan Stanley Financial Advisor/Financial Intermediary | To sell your shares, simply call your Financial Intermediary. Payment will be sent to the address to which the account is registered or deposited in your brokerage account. Your Financial Intermediary may charge transaction-based or other fees in connection with the purchase or sale of the Fund's shares. Please contact your Financial Intermediary for more information regarding any such fees. |

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Shareholder Information (Con't)

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| | |
|:---|:---|
| **Options** | **Procedures** |
| Contact the Fund By Telephone | You can also sell your shares by telephone and have the proceeds sent to the address of record or wired to your bank account of record. You automatically have the telephone redemption privilege unless you indicate otherwise by checking the applicable box on the New Account Application. You may also opt out of telephone privileges at any time by contacting Morgan Stanley Shareholder Services at 1-800-869-6397.<br> Before processing a telephone redemption, keep the following information in mind:<br> • You can establish this option at the time you open the account by completing the New Account Application or subsequently by calling toll-free 1-800-869-6397.<br>• Call toll-free 1-800-869-6397 to process a telephone redemption using our automated telephone system which is generally accessible 24 hours a day, seven days a week.<br>• Your request must be received prior to market close, generally 4:00 p.m. Eastern time.<br>• If your account has multiple owners, Morgan Stanley Shareholder Services may rely on the instructions of any one owner.<br>• Proceeds must be made payable to the name(s) and address in which the account is registered.<br>• You may redeem amounts of $50,000 or less daily if the proceeds are to be paid by check or by Automated Clearing House.<br>• This privilege is not available if the address on your account has changed within 15 calendar days prior to your telephone redemption request.<br>• Telephone redemption is available for most accounts other than accounts with shares represented by certificates.<br> If you request to sell shares that were recently purchased by check, the proceeds of that sale may not be sent to you until it has been verified that the check has cleared, which may take up to 15 calendar days from the date of purchase.<br> Morgan Stanley (and its subsidiaries) and the Fund employ procedures considered by them to be reasonable to confirm that instructions communicated by telephone are genuine. Such procedures may include requiring certain personal identification information prior to acting upon telephone instructions, tape-recording telephone communications and providing written confirmation of instructions communicated by telephone. If reasonable procedures are employed, neither Morgan Stanley nor the Fund will be liable for following telephone instructions which it reasonably believes to be genuine. Telephone redemptions may not be available if a shareholder cannot reach Morgan Stanley Shareholder Services by telephone, whether because all telephone lines are busy or for any other reason; in such case, a shareholder would have to use the Fund's other redemption procedures described in this section. |
| Contact the Fund By Letter | You can also sell your shares by writing a "letter of instruction" that includes:<br>• the name on your account and account number;<br>• the name of the Fund;<br>• the dollar amount or the number of shares you wish to sell;<br>• the class of shares you wish to sell;<br>• the signature of each owner as it appears on the account; and<br>• whether you wish to receive the redemption proceeds by check or by wire to the bank account we have on file for you.<br> If you are requesting payment to anyone other than the registered owner(s) or that payment be sent to any address other than the address of the registered owner(s) or pre-designated bank account, you will need a signature guarantee. You can obtain a signature guarantee from an eligible guarantor acceptable to the Transfer Agent. (You should contact Morgan Stanley Shareholder Services toll-free at 1-800-869-6397 for a determination as to whether a particular institution is an eligible guarantor.) A notary public cannot provide a signature guarantee. Additional documentation may be required for shares held by a corporation, partnership, trustee or executor.<br> Mail the letter to SS&C Global Investor and Distribution Solutions, Inc. at P.O. Box 219804, Kansas City, MO 64121-9804. If you hold share certificates, you must return the certificates, along with the letter and any required additional documentation. A check or wire will be sent according to your instructions. |
| Systematic Withdrawal Plan | If your investment in all of the Morgan Stanley Funds has a total market value of at least $10,000, you may elect to withdraw amounts of $25 or more, or in any whole percentage of a fund's balance (provided the amount is at least $25), on a monthly, quarterly, semi-annual or annual basis, from any fund with a balance of at least $1,000. Each time you add a fund to the plan, you must meet the plan requirements.<br> Amounts withdrawn are subject to any applicable CDSC. A CDSC may be waived under certain circumstances. See the Class A and Class C waiver categories listed in the "Shareholder Information—Share Class Arrangements" section of this Prospectus.<br> To sign up for the systematic withdrawal plan, contact your Morgan Stanley Financial Advisor or call toll-free 1-800-869-6397. You may terminate or suspend your plan at any time. Please remember that withdrawals from the plan are sales of shares, not Fund "distributions," and ultimately may exhaust your account balance. The Fund may terminate or revise the plan at any time. |

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**Payment for Sold Shares.** The Fund typically expects to pay redemption proceeds to you within two business days following receipt of your redemption request for those payments made to your brokerage account held with a Financial Intermediary. For redemption proceeds that are paid directly to you by the Fund, the Fund typically expects to pay redemption proceeds by check or by wire to you within one business day, following receipt of your redemption request; however, in all cases, it may take up to seven calendar days to pay redemption proceeds.

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Shareholder Information (Con't)

The Fund typically expects to meet redemption requests by using a combination of sales of securities held by the Fund and/or holdings of cash and cash equivalents. On a less regular basis, the Fund also reserves the right to use borrowings to meet redemption requests, and the Fund may use these methods during both normal and stressed market conditions.

Payment may be postponed or the right to sell your shares suspended under unusual circumstances. If you request to sell shares that were recently purchased by check, the proceeds of the sale may not be sent to you until it has been verified that the check has cleared, which may take up to 15 calendar days from the date of purchase.

**Payments-in-Kind.** If we determine that it is in the best interest of the Fund not to pay redemption proceeds in cash, we may pay you partly or entirely by distributing to you securities held by the Fund. If the Fund redeems your shares in-kind, you will bear any market risks associated with the securities paid as redemption proceeds. Such in-kind securities may be illiquid and difficult or impossible for a shareholder to sell at a time and at a price that a shareholder would like. Redemptions paid in such securities generally will give rise to income, gain or loss for income tax purposes in the same manner as redemptions paid in cash. In addition, you may incur brokerage costs and a further gain or loss for income tax purposes when you ultimately sell the securities.

**Tax Considerations.** Normally, your sale of Fund shares is subject to federal and state income tax. You should review the "Shareholder Information—Taxes" section of this Prospectus and consult your own tax professional about the tax consequences of a sale.

**Conversion to a New Share Class.** If the value of an account containing Class I or Class R6 shares falls below the applicable investment minimum because of shareholder redemption(s) or the failure to meet one of the waiver criteria set forth under "How to Buy Shares—Minimum Investment Amounts" above and, if the account value remains below such investment minimum, the shares in such account may, at the Adviser's discretion, convert to another class of shares offered by the Fund, if an account meets the minimum investment amount for such class, and will be subject to the shareholder services fee and other features applicable to such shares. Conversion to another class of shares will result in holding a share class with higher fees. The Fund will not convert to another class of shares based solely upon changes in the market that reduce the NAV. Under current tax law, conversion between share classes is not a taxable event to the shareholder. Shareholders will be notified prior to any such conversion.

**Reinstatement Privilege.** If you redeem shares, you may reinvest at net asset value all or any portion of the redemption proceeds in the same account and in the same class of shares of the Fund you redeemed from or another Morgan Stanley Multi-Class Fund, provided that the reinvestment occurs within 90 days of the redemption, the privilege has not been used more than once in the prior 12 months, the redeemed shares were subject to a front-end sales charge or CDSC and that you are otherwise eligible to invest in that class. Under these circumstances your account will be credited with any CDSC paid in connection with the redemption. Any CDSC period applicable to the shares you acquire upon reinvestment will run from the date of your original share purchase. For requests for reinvestment sent to the Fund's transfer agent, the request must be in writing. At the time of a reinvestment, you or your financial intermediary must notify the Fund or the transfer agent that you are reinvesting redemption proceeds in accordance with this privilege. If you reinvest, your purchase will be at the next determined net asset value following receipt of your request.

**Involuntary Sales.** If the value of an account falls below the investment minimum for a particular share class of the Fund because of shareholder redemption(s) or you no longer meet one of the waiver criteria set forth under "How to Buy Shares—Minimum Investment Amounts" above and, if the account value remains below such investment minimums, the shares in such account may be subject to redemption by the Fund. The Fund will not redeem shares based solely upon changes in the market that reduce the NAV. If redeemed, redemption proceeds will be promptly paid to the shareholder.

However, before the Fund sells your shares in this manner, we will notify you and allow you 60 days to make an additional investment in an amount that will increase the value of your account to at least the required amount before the sale is processed. No CDSC will be imposed on any involuntary sale.

**Margin Accounts.** If you have pledged your Fund shares in a margin account, contact your Financial Intermediary regarding restrictions on the sale of such shares.

&nbsp;&nbsp;&nbsp; ***Targeted Dividends*<sup>*SM*</sup>** <br>*You may select to have your Fund distributions automatically invested in other classes of Fund shares or classes of another Morgan Stanley Fund that you own. Contact your financial advisor for further information about this service.*<br>

**Distributions**

The Fund passes substantially all of its earnings from income and capital gains along to its investors as "distributions." The Fund earns interest from fixed-income investments. These amounts are passed along to Fund shareholders as "income dividend distributions." The Fund realizes capital gains whenever it sells securities for a higher price than it paid for them. These amounts may be passed along as "capital gain distributions."

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Shareholder Information (Con't)

The Fund declares income dividends separately for each class. Distributions paid on Class A, Class I and Class R6 shares usually will be higher than for Class L and Class C shares because distribution fees that Class L and Class C shares pay are higher. Normally, income dividends are declared on each day the NYSE is open for business, and are distributed to shareholders monthly. Capital gains, if any, are usually distributed in December. The Fund, however, may retain and reinvest any long-term capital gains. The Fund may at times make payments from sources other than income or capital gains that represent a return of a portion of your investment. These payments would not be taxable to you as a shareholder, but would have the effect of reducing your basis in the Fund.

Distributions are reinvested automatically in additional shares of the same class and automatically credited to your account, unless you request in writing that all distributions be paid in cash. If you elect the cash option, processing of your dividend checks begins immediately following the monthly payment date, and the Fund will mail a monthly dividend check to you normally during the first seven days of the following month. No interest will accrue on uncashed checks. If you wish to change how your distributions are paid, your request should be received by the Transfer Agent at least five business days prior to the record date of the distributions.

For accounts held directly with the Transfer Agent for which the shareholder has elected to receive distributions via check, any distribution (dividend or capital gain) under $10.00 is automatically reinvested in additional shares regardless of your elected distribution option.

**Frequent Purchases and Redemptions of Fund Shares**

Frequent purchases and redemptions of Fund shares by Fund shareholders are referred to as "market-timing" or "short-term trading" and may present risks for other shareholders of the Fund, which may include, among other things, dilution in the value of Fund shares held by long-term shareholders, interference with the efficient management of the Fund's portfolio, increased brokerage and administrative costs, incurring unwanted taxable gains and forcing the Fund to hold excess levels of cash.

In addition, the Fund is subject to the risk that market-timers and/or short-term traders may take advantage of time zone differences between the foreign markets on which the Fund's portfolio securities trade and the time the Fund's NAV is calculated ("time-zone arbitrage"). For example, a market-timer may purchase shares of the Fund based on events occurring after foreign market closing prices are established, but before the Fund's NAV calculation, that are likely to result in higher prices in foreign markets the following day. The market-timer would redeem the Fund's shares the next day, when the Fund's share price would reflect the increased prices in foreign markets, for a quick profit at the expense of long-term Fund shareholders.

Investments in other types of securities also may be susceptible to short-term trading strategies. These investments include securities that are, among other things, thinly traded, traded infrequently or relatively illiquid, which have the risk that the current market price for the securities may not accurately reflect current market values. A shareholder may seek to engage in short-term trading to take advantage of these pricing differences (referred to as "price arbitrage"). Investments in certain fixed-income securities may be adversely affected by price arbitrage trading strategies.

The Fund's policies with respect to valuing portfolio securities are described in "Shareholder Information—Pricing Fund Shares."

The Fund discourages and does not accommodate frequent purchases and redemptions of Fund shares by Fund shareholders and the Fund's Board of Trustees has adopted policies and procedures with respect to such frequent purchases and redemptions. The Fund's policies with respect to purchases, redemptions and exchanges of Fund shares are described in the "Shareholder Information—How to Buy Shares," "—How to Sell Shares" and "—How to Exchange Shares" sections of this Prospectus. Except as described in each of these sections, and with respect to trades that occur through omnibus accounts at Financial Intermediaries, as described below, the Fund's policies regarding frequent trading of Fund shares are applied uniformly to all shareholders. With respect to trades that occur through omnibus accounts at Financial Intermediaries, such as investment managers, broker-dealers, transfer agents and third-party administrators, the Fund (i) requests assurance that such Financial Intermediaries currently selling Fund shares have in place internal policies and procedures reasonably designed to address market-timing concerns and has instructed such Financial Intermediaries to notify the Fund immediately if they are unable to comply with such policies and procedures, and (ii) requires all prospective intermediaries to agree to cooperate in enforcing the Fund's policies (or, upon prior written approval only, a Financial Intermediary's own policies) with respect to frequent purchases, redemptions and exchanges of Fund shares.

Omnibus accounts generally do not identify customers' trading activity to the Fund on an individual ongoing basis. Therefore, with respect to trades that occur through omnibus accounts at Financial Intermediaries, to some extent, the Fund relies on the Financial Intermediary to monitor frequent short-term trading within the Fund by the Financial Intermediary's customers. However, the Fund or the Distributor has entered into agreements with Financial Intermediaries whereby Financial Intermediaries are required to provide certain customer identification and transaction information upon the Fund's request. The Fund may use this information to help identify and prevent market-timing activity in the Fund. There can be no assurance that the Fund will be able to identify or prevent all market-timing activities.

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Morgan Stanley Prospectus \| **Shareholder Information**

Shareholder Information (Con't)

**Taxes**

As with any investment, you should consider how your Fund investment will be taxed. The tax information in this Prospectus is provided as general information. You should consult your own tax professional about the tax consequences of an investment in the Fund.

Unless your investment in the Fund is through a tax-deferred retirement account, such as a 401(k) plan or IRA, you need to be aware of the possible tax consequences when:

• The Fund makes distributions; and

• You sell Fund shares, including an exchange to another Morgan Stanley Fund.

Your distributions are normally subject to federal income tax when they are paid, whether you take them in cash or reinvest them in Fund shares. A distribution also may be subject to state and local income tax. Depending on your state's rules, however, dividends attributable to interest earned on direct obligations of the U.S. Government may be exempt from state and local taxes. Any income dividend distributions and any short-term capital gain distributions are taxable to you as ordinary income. Any long-term capital gain distributions are taxable as long-term capital gains, no matter how long you have owned shares in the Fund. The Fund does not anticipate that it will make distributions eligible for the reduced rate of taxation applicable to qualified dividend income.

If you buy shares of the Fund before a distribution, you will be subject to tax on the entire amount of the taxable distribution you receive. Distributions are taxable to you even if they are paid from income or gain earned by the Fund before your investment (and thus were included in the price you paid for your Fund shares).

You will be sent a statement (U.S. Internal Revenue Service ("IRS") Form 1099-DIV) by February of each year showing the taxable distributions paid to you in the previous year. The statement provides information on your dividends and any capital gains for tax purposes.

Your sale of Fund shares normally is subject to federal and state income tax and may result in a taxable gain or loss to you. A sale also may be subject to local income tax. Your exchange of Fund shares for shares of another Morgan Stanley Fund is treated for tax purposes like a sale of your original shares and a purchase of your new shares. Thus, the exchange may, like a sale, result in a taxable gain or loss to you and will give you a new tax basis for your new shares.

An additional 3.8% Medicare tax is imposed on certain net investment income (including ordinary dividends and capital gain distributions received from the Fund and net gains from redemptions or other taxable dispositions of Fund shares) of U.S. individuals, estates and trusts to the extent that such person's "modified adjusted gross income" (in the case of an individual) or "adjusted gross income" (in the case of an estate or trust) exceeds certain threshold amounts.

Shareholders who are not citizens or residents of the United States and certain foreign entities will generally be subject to withholding of U.S. tax of 30% on distributions made by the Fund of investment income.

Dividends paid by the Fund to shareholders who are nonresident aliens or foreign entities that are derived from short-term capital gains and qualifying U.S. source net interest income (including income from original issue discount and market discount), and that are reported by the Fund as "interest-related dividends" or "short-term capital gain dividends," will generally not be subject to U.S. withholding tax, provided that the income would not be subject to U.S. federal income tax if earned directly by the foreign shareholder. However, depending on the circumstances, the Fund may report all, some or none of the Fund's potentially eligible dividends as exempt.

The Fund is required to withhold U.S. tax (at a 30% rate) on payments of taxable dividends made to certain non-U.S. entities that fail to comply (or be deemed compliant) with extensive reporting and withholding requirements designed to inform the U.S. Department of the Treasury of U.S.-owned foreign investment accounts. Shareholders may be requested to provide additional information to the Fund to enable the Fund to determine whether withholding is required.

The Fund (or its administrative agent) is required to report to the IRS and furnish to Fund shareholders the cost basis information for sale transactions of shares purchased on or after January 1, 2012. Shareholders may elect to have one of several cost basis methods applied to their account when calculating the cost basis of shares sold, including average cost, FIFO ("first-in, first-out") or some other specific identification method. Unless you instruct otherwise, the Fund will use average cost as its default cost basis method, and will treat sales as first coming from shares purchased prior to January 1, 2012. If average cost is used for the first sale of Fund shares covered by these new rules, the shareholder may only use an alternative cost basis method for shares purchased prospectively. Fund shareholders should consult with their tax advisors to determine the best cost basis method for their tax situation.

When you open your Fund account, you should provide your social security or tax identification number on your investment application. By providing this information, you will avoid being subject to federal backup withholding tax on taxable distributions

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Morgan Stanley Prospectus \| **Shareholder Information**

Shareholder Information (Con't)

and redemption proceeds at a rate of 24%. Any withheld amount would be sent to the IRS as an advance payment of your taxes due on your income.

**Share Class Arrangements**

The Fund offers several classes of shares having different distribution arrangements designed to provide you with different purchase options according to your investment needs. Your Financial Intermediary can help you decide which class may be appropriate for you.

The general public is offered two classes: Class A shares and Class C shares, which differ principally in terms of sales charges and ongoing expenses. Class L shares are closed to new investments. Class L shareholders of the Fund do not have the option of purchasing additional Class L shares. However, the existing Class L shareholders may invest in additional shares of their respective class through reinvestment of dividends and distributions. A fourth class, Class I shares, is offered only to a limited category of investors. The Fund offers a fifth class, Class R6 shares, which is offered only to eligible investors meeting certain minimum investment requirements. Shares that you acquire through reinvested distributions will not be subject to any front-end sales charge or CDSC.

A shareholder currently holding a class of shares of the Fund in a Merrill Lynch Advisory Program (as defined herein) account may have such shares converted by Merrill Lynch to an eligible class of shares of the Fund for a Merrill Lynch brokerage account upon the transfer of the shares of the Fund from a Merrill Lynch Advisory Program account to a brokerage account with Merrill Lynch. Such conversions will be on the basis of the relative NAVs and without the imposition of any redemption fee or other charge. The fees and expenses of the new class may be higher than those of the previously held class.

In addition, the Adviser may in its sole discretion permit a conversion of one share class to another share class of the same Fund in certain circumstances, provided that the Fund's eligibility requirements are met, and subject to the shareholder's consent. Such conversions will be on the basis of the relative NAVs and without the imposition of any redemption fee or other charge.

A conversion of shares of one class directly for shares of another class of the same Fund normally should not be taxable for federal income tax purposes.

Please ask your financial advisor if you are eligible for converting a class of shares pursuant to the conversion features described in this Prospectus. A conversion feature's availability will be subject to the applicable classes being offered on a Financial Intermediary's platform. Shareholders should carefully review information in this Prospectus regarding share class features, including conversions and exchanges, or contact their financial advisor for more information. You should talk to your tax advisor before making a conversion.

Sales personnel may receive different compensation for selling each class of shares. The sales charges applicable to each class provide for the distribution financing of shares of that class.

The chart below compares the sales charge and annual 12b-1 fee applicable to each class:

---

| | | |
|:---|:---|:---|
| **Class** | **Sales Charge** | **Maximum Annual 12b-1 Fee** |
| A | Maximum 3.25% initial sales charge reduced for purchases of $100,000 or more; shares purchased without an initial sales charge are generally subject to a 0.75% CDSC if sold during the first 12 months (for Class A shares purchased without an initial sales charge prior to April 29, 2022, such shares are generally subject to a 0.50% CDSC if sold during the first 12 months) | 0.25% |
| L |  | 0.50% |
| I |  |  |
| C | Maximum 1.00% CDSC on sales made within one year after the last day of the month of purchase | 1.00% |
| R6 |  |  |

---

While Class L and Class C shares do not have any front-end sales charges, their higher ongoing annual expenses (due to higher 12b-1 fees) mean that over time you could end up paying more for these shares than if you were to pay front-end sales charges for Class A shares.

Certain shareholders may be eligible for reduced sales charges (i.e., breakpoint discounts), CDSC waivers and eligibility minimums. Please see the information for each class set forth below for specific eligibility requirements. You must notify your Financial Intermediary (or the Transfer Agent or Co-Transfer Agent if you purchase shares directly through the Fund) at the time a purchase order (or in the case of Class C, a redemption order) is placed, that the purchase (or redemption) qualifies for a reduced sales charge (i.e., breakpoint discount), CDSC waiver or eligibility minimum. Similar notification must be made in writing when an order is

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Shareholder Information (Con't)

placed by mail. The reduced sales charge, CDSC waiver or eligibility minimum will not be granted if: (i) notification is not furnished at the time of order; or (ii) a review of the records of your Financial Intermediary or the Transfer Agent or Co-Transfer Agent does not confirm your represented holdings.

The availability of sales charge waivers and discounts may depend on whether you purchase Fund shares directly from the Fund (or the Distributor) or a Financial Intermediary. More information regarding sales charge discounts and waivers is summarized below. The Fund's sales charge waivers (and discounts) disclosed in this Prospectus are available for qualifying purchases made directly from the Fund (or the Distributor) and are generally available through Financial Intermediaries. The sales charge waivers (and discounts) available through certain other Financial Intermediaries are set forth in Appendix A to this Prospectus (Intermediary-Specific Sales Charge Waivers and Discounts), which may differ from those available for purchases made directly from the Fund (or the Distributor). Please contact your Financial Intermediary regarding applicable sales charge waivers (and discounts) and for information regarding the Financial Intermediary's related policies and procedures.

In order to obtain a reduced sales charge (i.e., breakpoint discount) or to meet an eligibility minimum, it may be necessary at the time of purchase for you to inform your Financial Intermediary (or the Transfer Agent or Co-Transfer Agent if you purchase shares directly through the Fund) of the existence of other accounts in which there are holdings eligible to be aggregated to meet the sales load breakpoints or eligibility minimums. In order to verify your eligibility, you may be required to provide account statements and/or confirmations regarding shares of the Fund or other Morgan Stanley Funds held in all related accounts described below at your Financial Intermediary, as well as shares held by related parties, such as members of the same family or household, in order to determine whether you have met a sales load breakpoint or eligibility minimum. The Fund makes available, in a clear and prominent format, free of charge, on its web site, www.morganstanley.com/im, information regarding applicable sales loads, reduced sales charges (i.e., breakpoint discounts), sales load waivers and eligibility minimums. The web site includes hyperlinks that facilitate access to the information.

&nbsp;&nbsp;&nbsp; ***Front-End Sales Charge or FSC***<br> *An initial sales charge you pay when purchasing Class A shares that is based on a percentage of the offering price. The percentage declines based upon the dollar value of Class A shares you purchase. We offer three ways to reduce your Class A sales charges—the Combined Purchase Privilege, Right of Accumulation and Letter of Intent.*<br>

**CLASS A SHARES** Class A shares are sold at NAV plus an initial sales charge of up to 3.25% of the public offering price. The initial sales charge is reduced for purchases of $100,000 or more according to the schedule below. Investments of $500,000 or more are not subject to an initial sales charge, but are generally subject to a CDSC of 0.75% on sales made within 12 months after purchase (for Class A shares purchased without an initial sales charge prior to April 29, 2022, such shares are generally subject to a 0.50% CDSC if sold during the first 12 months). The CDSC will be assessed in the same manner and with the same CDSC waivers as with Class C shares. See "Class C—CDSC Waivers" section of this Prospectus for a discussion of the applicable CDSC waivers. In addition, the CDSC on Class A shares will be waived in connection with sales of Class A shares for which no commission or transaction fee was paid by the Distributor or Financial Intermediary at the time of purchase of such shares. Class A shares are also subject to an annual distribution and shareholder services (12b-1) fee of up to 0.25% of the average daily net assets of the class. The maximum annual 12b-1 fee payable by Class A shares is lower than the maximum annual 12b-1 fee payable by Class L or Class C shares.

The offering price of Class A shares includes a sales charge (expressed as a percentage of the public offering price) on a single transaction as shown in the following table:

---

| | | | |
|:---|:---|:---|:---|
|  | **Front-End Sales Charge** | **Front-End Sales Charge** | **Front-End Sales Charge** |
| **Amount of Single Transaction** | **Percentage of Public Offering Price** | **Approximate Percentage of Net** **Amount Invested** | **Dealer Commission as a Percentage** **of Offering Price** |
| Less than $100,000 | 3.25% | 3.36% | 2.75% |
| $100,000 but less than $250,000 | 2.00% | 2.04% | 1.50% |
| $250,000 but less than $500,000 | 1.00% | 1.01% | 0.50% |
| $500,000 and over<sup>1</sup>  | 0.00% | 0.00% | 0.00% |

---

---

| | |
|:---|:---|
| 1 | The Distributor may pay a commission of up to 0.75% to a Financial Intermediary for purchase amounts of $500,000 or more. |

---

You may benefit from a reduced sales charge schedule (i.e., breakpoint discount) for purchases of Class A shares of the Fund, by combining, in a single transaction, your purchase with purchases of Class A shares of the Fund by the following related accounts ("Related Accounts"):

• A single account (including an individual, a joint account, a trust or fiduciary account).

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

• A family member account (limited to spouse, and children under the age of 21, but including trust accounts established solely for the benefit of a spouse, or children under the age of 21).

• An UGMA/UTMA (Uniform Gifts to Minors Act/Uniform Transfers to Minors Act) account.

• An IRA.

• Investment and institutional clients of the Adviser and its affiliates.

• Direct purchases of shares by accounts where no Financial Intermediary is specified.

Investments made through employer-sponsored retirement plan accounts will not be aggregated with individual accounts.

Class A shares also are offered at net asset value to investment and institutional clients of the Adviser and its affiliates and direct purchases of shares by accounts where no Financial Intermediary is specified.

**Combined Purchase Privilege.** You will have the benefit of a reduced sales charge by combining your purchase of Class A shares of the Fund in a single transaction with your purchase of Class A shares of any other Morgan Stanley Multi-Class Fund for any Related Account except for purchases of shares of Morgan Stanley Institutional Fund Trust Short Duration Income, Ultra-Short Income or Ultra-Short Municipal Income Portfolios.

**Right of Accumulation.** Your sales charge may be reduced if you invest $100,000 or more in a single transaction, as calculated below:

(a) the NAV of Class A shares of the Fund being purchased plus the total of the NAV of any Class A, Class L and Class C shares of the Fund held in Related Accounts as of the transaction date,

(b) plus the total of the NAV of Class A, Class L and Class C shares of any other Morgan Stanley Multi-Class Fund excluding Morgan Stanley Institutional Fund Trust Short Duration Income, Ultra-Short Income and Ultra-Short Municipal Income Portfolios (including shares of Morgan Stanley Money Market Funds (as defined herein) that you acquired in a prior exchange of Class A, Class L or Class C shares of the Fund or Class A, Class L or Class C shares of another Morgan Stanley Multi-Class Fund, excluding Morgan Stanley Institutional Fund Trust Short Duration Income, Ultra-Short Income and Ultra-Short Municipal Income Portfolios) held in Related Accounts as of the transaction date.

**Notification.** You must notify your Financial Intermediary (or the Transfer Agent or Co-Transfer Agent, if you purchase shares directly through the Fund) at the time a purchase order is placed that the purchase qualifies for a reduced sales charge under any of the privileges discussed above. Similar notification must be made in writing when an order is placed by mail. The reduced sales charge will not be granted if: (i) notification is not furnished at the time of the order; or (ii) a review of the records of your Financial Intermediary or the Transfer Agent or Co-Transfer Agent does not confirm your represented holdings. Certain waivers may not be available depending on the policies at certain Financial Intermediaries. Please consult your Financial Intermediary for more information.

In order to obtain a reduced sales charge for Class A shares of the Fund under any of the privileges discussed above, it may be necessary at the time of purchase for you to inform your Financial Intermediary (or the Transfer Agent, if you purchase shares directly through the Fund) of the existence of any Related Accounts in which there are holdings eligible to be aggregated to meet the sales load breakpoint and/or right of accumulation threshold. In order to verify your eligibility, you may be required to provide account statements and/or confirmations regarding your purchases and/or holdings of any Class A shares of the Fund or any other Morgan Stanley Multi-Class Fund (including shares of Morgan Stanley Money Market Funds that you acquired in an exchange from Class A shares of the Fund or any other Morgan Stanley Multi-Class Fund except Morgan Stanley Institutional Fund Trust Short Duration Income, Ultra-Short Income and Ultra-Short Municipal Income Portfolios) held in all Related Accounts at your Financial Intermediary, in order to determine whether you have met the sales load breakpoint and/or right of accumulation threshold.

**Letter of Intent.** The above schedule of reduced sales charges for larger purchases also will be available to you if you enter into a written "Letter of Intent." A Letter of Intent provides for the purchase of Class A shares of the Fund and Class A shares of other Morgan Stanley Multi-Class Funds, except Morgan Stanley Institutional Fund Trust Short Duration Income, Ultra-Short Income and Ultra-Short Municipal Income Portfolios, within a 13-month period. The initial purchase of Class A shares of the Fund under a Letter of Intent must be at least 5% of the stated investment goal. The Letter of Intent does not preclude the Fund (or any other Morgan Stanley Multi-Class Fund) from discontinuing sales of its shares. To determine the applicable sales charge reduction, you may also include (1) the cost of Class A shares of the Fund or any other Morgan Stanley Multi-Class Fund that were previously purchased at a price including a front-end sales charge during the 90-day period prior to the Distributor receiving the Letter of Intent and (2) the historical cost of shares of any Morgan Stanley Money Market Fund that you acquired in an exchange from Class A shares of the Fund or any other Morgan Stanley Multi-Class Fund purchased during that period at a price including a front-end sales charge. You may also combine purchases and exchanges by any Related Accounts during such 90-day period.

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Shareholder Information (Con't)

You should retain any records necessary to substantiate historical costs because the Fund, the Transfer Agent and your Financial Intermediary may not maintain this information. You can obtain a Letter of Intent by contacting your Financial Intermediary or by calling toll-free 1-800-869-6397. If you do not achieve the stated investment goal within the 13-month period, you are required to pay the difference between the sales charges otherwise applicable and sales charges actually paid, which may be deducted from your investment. Shares acquired through reinvestment of distributions are not aggregated to achieve the stated investment goal.

**Other Sales Charge Waivers.** In addition to investments of $500,000 or more, your purchase of Class A shares is not subject to a front-end sales charge if your account qualifies under one of the following categories:

• Sales through banks, broker-dealers and other financial institutions (including registered investment advisers and financial planners) purchasing shares on behalf of their clients in (i) discretionary and non-discretionary advisory programs, (ii) asset allocation programs, (iii) other programs in which the client pays an asset-based fee for advice or for executing transactions in Fund shares or for otherwise participating in the program or (iv) certain other investment programs that do not charge an asset- based fee, as outlined in an agreement between the Distributor and such financial institution.

• Sales through Financial Intermediaries who have entered into an agreement with the Distributor to offer Fund shares to self- directed investment brokerage accounts, which may or may not charge a transaction fee.

• Qualified state tuition plans described in Section 529 of the Code (subject to all applicable terms and conditions).

• Defined contribution, defined benefit and other employer-sponsored employee benefit plans, whether or not qualified under the Code, where such plans purchase Class A shares through a plan-level or omnibus account sponsored or serviced by a Financial Intermediary that has an agreement with the Fund, the Distributor and/or the Adviser pursuant to which Class A shares are available to such plans without an initial sales charge.

• Certain retirement and deferred compensation programs established by Morgan Stanley Investment Management or its affiliates for their employees or the Fund's Trustees.

• Current or retired Directors or Trustees of the Morgan Stanley Funds, such persons' spouses, and children under the age of 21, and trust accounts for which any of such persons is a beneficiary.

• Current or retired directors, officers and employees of Morgan Stanley and any of its subsidiaries, such persons' spouses, and children under the age of 21, and trust accounts for which any of such persons is a beneficiary.

• Certain other registered open-end investment companies whose shares are distributed by the Distributor.

• Investments made in connection with certain mergers and/or reorganizations as approved by the Adviser.

• The reinvestment of dividends from Class A shares in additional Class A shares of the Fund.

• Current employees of financial intermediaries or their affiliates that have executed a selling agreement with the Distributor, such persons' spouses, children under the age of 21, and trust accounts for which any such person is a beneficiary, as permitted by internal policies of their employer.

Certain waivers may not be available depending on the policies at certain Financial Intermediaries. Please consult your Financial Intermediary for more information. For specific information with respect to sales charge waivers and discounts available through a specific Financial Intermediary, please refer to Appendix A attached to this Prospectus.

**Conversion Feature.** A shareholder currently holding Class A shares of the Fund in a fee-based advisory program ("Advisory Program") account or currently holding Class A shares in a brokerage account, but wishing to transfer into an Advisory Program account may convert such shares to Class I shares of the Fund within the Advisory Program at any time. Such conversions will be on the basis of the relative NAVs, without requiring any investment minimum to be met and without the imposition of any redemption fee or other charge. If a CDSC is applicable to such Class A shares, then the conversion may not occur until after the shareholder has held the shares for an 12-month period, except that, effective May 1, 2017, a CDSC applicable to Class A shares converted to Class I shares through traditional IRAs, Roth IRAs, Rollover IRAs, inherited IRAs, SEP IRAs, SIMPLE IRAs, BASIC Plans, Educational Savings Accounts and Medical Savings Accounts on the Merrill Lynch platform will be waived and Merrill Lynch will remit to the Distributor the full amount of the CDSC otherwise payable upon sale of such shares. Please ask your financial advisor if you are eligible for converting your Class A shares to Class I shares pursuant to these conversion features. In addition, Class C shares held in an account for which no broker-dealer or other Financial Intermediary is specified and which are not subjected to a CDSC will periodically be converted to Class A shares of the same Fund.

&nbsp;&nbsp;&nbsp; ***Contingent Deferred Sales Charge or CDSC***<br> *A fee you pay when you sell shares of certain Morgan Stanley Funds purchased without an initial sales charge. This fee declines the longer you hold your shares as set forth in the table.*<br>

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Shareholder Information (Con't)

**CLASS L SHARES** *The Fund has suspended offering Class L shares of the Fund for sale to all investors. The Class L shareholders of the Fund do not have the option of purchasing additional Class L shares. However, the existing Class L shareholders may invest in additional Class L shares through reinvestment of dividends and distributions.*

**Distribution Fee.** Class L shares are subject to an annual distribution and shareholder services (12b-1) fee of up to 0.50% of the average daily net assets of that class. The maximum annual 12b-1 fee payable by Class L shares is higher than the maximum annual 12b-1 fee payable by Class A shares.

**Conversion Feature.** A shareholder holding Class L shares of the Fund through a brokerage account or an Advisory Program account may convert such shares to either Class A or Class I shares of the Fund within an Advisory Program at any time. Such conversions will be on the basis of the relative NAVs, without requiring any investment minimum to be met and without the imposition of any redemption fee or other charge. Please ask your financial advisor if you are eligible for converting your Class L shares to Class I shares pursuant to these conversion features.

**CLASS I SHARES** Class I shares are sold at NAV without any sales charge on purchases or sales and without any distribution and shareholder services (12b-1) fee. Class I shares are offered only to investors meeting an initial investment minimum of $1 million and the following categories:

• Sales through banks, broker-dealers and other financial institutions (including registered investment advisers and financial planners) purchasing shares on behalf of their clients in (i) discretionary and non-discretionary advisory programs, (ii) fund supermarkets, (iii) asset allocation programs, (iv) other programs in which the client pays an asset-based fee for advice or for executing transactions in Fund shares or for otherwise participating in the program or (v) certain other investment programs that do not charge an asset-based fee.

• Qualified state tuition plans described in Section 529 of the Code and donor-advised charitable gift funds (subject to all applicable terms and conditions).

• Defined contribution, defined benefit and other employer-sponsored employee benefit plans, whether or not qualified under the Code.

• Certain other registered open-end investment companies whose shares are distributed by the Distributor.

• Investors who were shareholders of the Dean Witter Retirement Series on September 11, 1998 for additional purchases for their former Dean Witter Retirement Series accounts.

• Certain retirement and deferred compensation programs established by Morgan Stanley Investment Management or its affiliates for their employees or the Fund's Trustees.

• Current or retired directors, officers and employees of Morgan Stanley and any of its subsidiaries, such persons' spouses, and children under the age of 21, and trust accounts for which any of such persons is a beneficiary.

• Current or retired Directors or Trustees of the Morgan Stanley Funds, such persons' spouses, and children under the age of 21, and trust accounts for which any of such persons is a beneficiary.

• Investments made in connection with certain mergers and/or reorganizations as approved by the Adviser.

• The reinvestment of dividends from Class I shares in additional Class I shares of the Fund.

**Meeting Class I Eligibility Minimums.** To meet the $1 million initial investment to qualify to purchase Class I shares you may combine: (1) purchases in a single transaction of Class I shares of the Fund and other Morgan Stanley Multi-Class Funds; and/or (2) previous purchases of Class A and Class I shares of Morgan Stanley Multi-Class Funds you currently own, along with shares of Morgan Stanley Funds you currently own that you acquired in exchange for those shares. Shareholders cannot combine purchases made by family members or a shareholder's other Related Accounts in a single transaction for purposes of meeting the $1 million initial investment minimum requirement to qualify to purchase Class I shares.

**CLASS C SHARES** Class C shares are sold at NAV with no initial sales charge, but are subject to a CDSC of 1.00% on sales made within one year after the last day of the month of purchase.

Financial Intermediaries may impose a limit on the dollar value of a Class C share purchase order that they will accept. You should discuss with your Financial Intermediary which share class is most appropriate for you based on the size of your investment, your expected time horizon for holding the shares and other factors, bearing in mind the availability of reduced sales loads on Class A share purchases that qualify for such reduction under the combined purchase privilege or right of accumulation privilege available on Class A share purchases.

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Morgan Stanley Prospectus \| **Shareholder Information**

Shareholder Information (Con't)

With respect to Class C shares, the CDSC is assessed on an amount equal to the lesser of the then market value of the shares or the historical cost of the shares (which is the amount actually paid for the shares at the time of original purchase) being redeemed. Accordingly, no sales charge is imposed on increases in NAV above the initial purchase price. In determining whether a CDSC applies to a redemption, it is assumed that the shares being redeemed first are any shares in the shareholder's account that are not subject to a CDSC, followed by shares held the longest in the shareholder's account. A CDSC may be waived under certain circumstances. See the Class C CDSC waiver categories listed below.

**CDSC Waivers.** The CDSC on Class C shares will be waived in connection with the sale of Class C shares for which no commission or transaction fee was paid by the Distributor or Financial Intermediary at the time of purchase of such shares. In addition, a CDSC, if otherwise applicable, will be waived in the case of:

• Sales of shares held at the time you die or become disabled (within the definition in Section 72(m)(7) of the Code which relates to the ability to engage in gainful employment), if the shares are: (i) registered either in your individual name or in the names of you and your spouse as joint tenants with right of survivorship; (ii) registered in the name of a trust of which (a) you are the settlor and that is revocable by you (i.e., a "living trust") or (b) you and your spouse are the settlors and that is revocable by you or your spouse (i.e., a "joint living trust"); or (iii) held in a qualified corporate or self-employed retirement plan, IRA or 403(b) Custodial Account; provided in either case that the sale is requested within one year after your death or initial determination of disability.

• Sales in connection with the following retirement plan "distributions": (i) lump-sum or other distributions from a qualified corporate or self-employed retirement plan following retirement (or, in the case of a "key employee" of a "top heavy" plan, following attainment of age 59 1/2); (ii) required minimum distributions and certain other distributions (such as those following attainment of age 59 1/2) from an IRA or 403(b) Custodial Account; or (iii) a tax-free return of an excess IRA contribution (a distribution does not include a direct transfer of IRA, 403(b) Custodial Account or retirement plan assets to a successor custodian or trustee).

• Sales of shares in connection with the systematic withdrawal plan of up to 12% annually of the value of each fund from which plan sales are made. The percentage is determined on the date you establish the systematic withdrawal plan and based on the next calculated share price. You may have this CDSC waiver applied in amounts up to 1% per month, 3% per quarter, 6% semi- annually or 12% annually. Shares with no CDSC will be sold first, followed by those with the lowest CDSC. As such, the waiver benefit will be reduced by the amount of your shares that are not subject to a CDSC. If you suspend your participation in the plan, you may later resume plan payments without requiring a new determination of the account value for the 12% CDSC waiver.

The Distributor may require confirmation of your entitlement before granting a CDSC waiver. If you believe you are eligible for a CDSC waiver, please contact your Financial Intermediary or call toll-free 1-800-869-6397.

**Distribution Fee.** Class C shares are also subject to an annual distribution and shareholder services (12b-1) fee of up to 1.00% of the average daily net assets of that class. The Fund pays the Distributor (i) a shareholder services fee of up to 0.25% of the average daily net assets of the Class C shares on an annualized basis and (ii) a distribution fee of up to 0.75% of the average daily net assets of the Class C shares on an annualized basis. The maximum annual 12b-1 fee payable by Class C shares is higher than the maximum annual 12b-1 fee payable by Class A and Class L shares.

**Conversion Feature.** A shareholder holding Class C shares of the Fund through a brokerage account or an Advisory Program account may convert such shares to either Class A or Class I shares of the Fund within an Advisory Program at any time. Such conversions will be on the basis of the relative NAVs, without requiring any investment minimum to be met and without the imposition of any redemption fee or other charge. If a CDSC is applicable to such Class C shares, then the conversion may not occur until after the shareholder has held the shares for a 12-month period, except that, effective May 1, 2017, a CDSC applicable to Class C shares converted to Class I shares through traditional IRAs, Roth IRAs, Rollover IRAs, inherited IRAs, SEP IRAs, SIMPLE IRAs, BASIC Plans, Educational Savings Accounts and Medical Savings Accounts on the Merrill Lynch platform will be waived and Merrill Lynch will remit the portion of the payment to be made to the Distributor in an amount equal to the CDSC multiplied by the number of months remaining on the CDSC period divided by the maximum number of months of the CDSC period. Please ask your financial advisor if you are eligible for converting your Class C shares to Class I shares pursuant to these conversion features.

After eight years, Class C shares of the Fund generally will convert automatically to Class A shares of the Fund with no initial sales charge, provided that the Fund or the Financial Intermediary through which a shareholder purchased or holds Class C shares has records verifying that the Class C shares have been held for at least eight years. The automatic conversion of Class C shares to Class A shares will not apply to shares held through group retirement plan recordkeeping platforms of certain Financial Intermediaries who hold such shares in an omnibus account and do not track participant level share lot aging to facilitate such a conversion. The eight-year period runs from the last day of the month in which the shares were purchased or, in the case of Class C shares acquired through an exchange, from the last day of the month in which the original Class C shares were purchased; the shares will convert to Class A shares based on their relative NAVs in the month following the eight-year period. At the same time, an equal proportion of Class C

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Morgan Stanley Prospectus \| **Shareholder Information**

Shareholder Information (Con't)

shares acquired through automatically reinvested distributions will convert to Class A shares on the same basis. A conversion of shares of one class directly for shares of another class of the same Fund normally should not be taxable for federal income tax purposes.

**CLASS** **R6** **SHARES** Class R6 shares are offered at NAV without any sales charge on purchases or sales. In addition, no distribution (12b-1) or shareholder services fees, sub-accounting or other similar fees, or any finder's fee payments are charged or paid on Class R6 shares. To purchase Class R6 shares, an investor must meet a minimum initial investment of $5 million or be a defined contribution, defined benefit or other employer sponsored employee benefit plan, in each case provided that the plan trades on an omnibus level, whether or not qualified under the Code and in each case subject to the discretion of the Adviser. Omnibus trades of $5 million or more shall be accepted from certain platforms, including; (i) banks and trust companies; (ii) insurance companies; and (iii) registered investment advisory firms. The $5 million minimum initial investment amount may be waived for Fund shares purchased by or through: (1) certain registered open-end investment companies whose shares are distributed by the Distributor; or (2) investments made in connection with certain mergers and/or reorganizations as approved by the Adviser.

**NO SALES CHARGES FOR REINVESTED CASH DISTRIBUTIONS** If you receive a cash payment representing an ordinary dividend or capital gain and you reinvest that amount in the applicable class of shares by returning the check within 30 days of the payment date, the purchased shares would not be subject to an initial sales charge or CDSC.

**PLAN OF DISTRIBUTION (RULE 12b-1 FEES)** The Fund has adopted a Plan of Distribution (the "Plan") in accordance with Rule 12b-1 under the 1940 Act with respect to the Class A, Class L and Class C shares (Class I and Class R6 shares are offered without any 12b-1 fee). The Plan allows the Fund to pay distribution fees for the sale and distribution of these shares. It also allows the Fund to pay for services to shareholders of Class A, Class L and Class C shares. Because these fees are paid out of the Fund's assets on an ongoing basis, over time, these fees will increase the cost of your investment and reduce your return in these classes and may cost you more than paying other types of sales charges.

**Potential Conflicts of Interest**

As a diversified global financial services firm, Morgan Stanley, the parent company of the Adviser, engages in a broad spectrum of activities, including financial advisory services, investment management activities, lending, commercial banking, sponsoring and managing private investment funds, engaging in broker-dealer transactions and principal securities, commodities and foreign exchange transactions, research publication and other activities. In the ordinary course of its business, Morgan Stanley is a full-service investment banking and financial services firm and therefore engages in activities where Morgan Stanley's interests or the interests of its clients may conflict with the interests of the Fund. Morgan Stanley advises clients and sponsors, manages or advises other investment funds and investment programs, accounts and businesses (collectively, together with any new or successor funds, programs, accounts or businesses, the ''Affiliated Investment Accounts'') with a wide variety of investment objectives that in some instances may overlap or conflict with the Fund's investment objectives and present conflicts of interest. In addition, Morgan Stanley may also from time to time create new or successor Affiliated Investment Accounts that may compete with the Fund and present similar conflicts of interest. The discussion below enumerates certain actual, apparent and potential conflicts of interest. There is no assurance that conflicts of interest will be resolved in favor of Fund shareholders and, in fact, they may not be. Conflicts of interest not described below may also exist.

For more information about conflicts of interest, see the section entitled "Potential Conflicts of Interest" in the SAI.

*Material Nonpublic Information.* It is expected that confidential or material nonpublic information regarding an investment or potential investment opportunity may become available to the Adviser. If such information becomes available, the Adviser may be precluded (including by applicable law or internal policies or procedures) from pursuing an investment or disposition opportunity with respect to such investment or investment opportunity. Morgan Stanley has established certain information barriers and other policies to address the sharing of information between different businesses within Morgan Stanley. In limited circumstances, however, including for purposes of managing business and reputational risk, and subject to policies and procedures and any applicable regulations, personnel, including personnel of the investment adviser, on one side of an information barrier may have access to information and personnel on the other side of the information barrier through "wall crossings." The Adviser faces conflicts of interest in determining whether to engage in such wall crossings. Information obtained in connection with such wall crossings may limit or restrict the ability of the Adviser to engage in or otherwise effect transactions on behalf of the Fund (including purchasing or selling securities that the Adviser may otherwise have purchased or sold for the Fund in the absence of a wall crossing).

*Investments by Morgan Stanley and its Affiliated Investment Accounts.* In serving in multiple capacities to Affiliated Investment Accounts, Morgan Stanley, including the Adviser and the Investment team, may have obligations to other clients or investors in Affiliated Investment Accounts, the fulfillment of which may not be in the best interests of the Fund or its shareholders. The Fund's investment objectives may overlap with the investment objectives of certain Affiliated Investment Accounts. As a result, the members of an Investment team may face conflicts in the allocation of investment opportunities among the Fund and other investment funds, programs, accounts and businesses advised by or affiliated with the Adviser. Certain Affiliated Investment Accounts may provide for higher management or incentive fees or greater expense reimbursements or overhead allocations, all of which may contribute to this

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Morgan Stanley Prospectus \| **Shareholder Information**

Shareholder Information (Con't)

conflict of interest and create an incentive for the Adviser to favor such other accounts. To seek to reduce potential conflicts of interest and to attempt to allocate such investment opportunities in a fair and equitable manner, the Adviser has implemented allocation policies and procedures. These policies and procedures are intended to give all clients of the Adviser, including the Fund, fair access to investment opportunities consistent with the requirements of organizational documents, investment strategies, applicable laws and regulations, and the fiduciary duties of the Adviser.

*Payments to Broker-Dealers and Other Financial Intermediaries.* The Adviser and/or the Distributor may pay compensation, out of their own funds and not as an expense of the Fund, to certain Financial Intermediaries (which may include affiliates of the Adviser and Distributor), including recordkeepers and administrators of various deferred compensation plans, in connection with the sale, distribution, marketing and retention of shares of the Fund and/or shareholder servicing. The prospect of receiving, or the receipt of, additional compensation, as described above, by Financial Intermediaries may provide such Financial Intermediaries and their financial advisors and other salespersons with an incentive to favor sales of shares of the Fund over other investment options with respect to which these Financial Intermediaries do not receive additional compensation (or receives lower levels of additional compensation). These payment arrangements, however, will not change the price that an investor pays for shares of the Fund or the amount that the Fund receives to invest on behalf of an investor. Investors may wish to take such payment arrangements into account when considering and evaluating any recommendations relating to Fund shares and should review carefully any disclosures provided by Financial Intermediaries as to their compensation. In addition, in certain circumstances, the Adviser restricts, limits or reduces the amount of the Fund's investment, or restricts the type of governance or voting rights it acquires or exercises, where the Fund (potentially together with Morgan Stanley) exceeds a certain ownership interest, or possesses certain degrees of voting or control or has other interests.

*Morgan Stanley Trading and Principal Investing Activities.* Notwithstanding anything to the contrary herein, Morgan Stanley will generally conduct its sales and trading businesses, publish research and analysis, and render investment advice without regard for the Fund's holdings, although these activities could have an adverse impact on the value of one or more of the Fund's investments, or could cause Morgan Stanley to have an interest in one or more portfolio investments that is different from, and potentially adverse to, that of the Fund.

*Morgan Stanley's Investment Banking and Other Commercial Activities.* Morgan Stanley advises clients on a variety of mergers, acquisitions, restructuring, bankruptcy and financing transactions. Morgan Stanley may act as an advisor to clients, including other investment funds that may compete with the Fund and with respect to investments that the Fund may hold. Morgan Stanley may give advice and take action with respect to any of its clients or proprietary accounts that may differ from the advice given, or may involve an action of a different timing or nature than the action taken, by the Fund. Morgan Stanley may give advice and provide recommendations to persons competing with the Fund and/or any of the Fund's investments that are contrary to the Fund's best interests and/or the best interests of any of its investments. Morgan Stanley's activities on behalf of its clients (such as engagements as an underwriter or placement agent) may restrict or otherwise limit investment opportunities that may otherwise be available to the Fund.

Morgan Stanley may be engaged to act as a financial advisor to a company in connection with the sale of such company, or subsidiaries or divisions thereof, may represent potential buyers of businesses through its mergers and acquisition activities and may provide lending and other related financing services in connection with such transactions. Morgan Stanley's compensation for such activities is usually based upon realized consideration and is usually contingent, in substantial part, upon the closing of the transaction. Under these circumstances, the Fund may be precluded from participating in a transaction with or relating to the company being sold or participating in any financing activity related to a merger or an acquisition.

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Morgan Stanley Prospectus \| **Financial Highlights**

Financial Highlights

The financial highlights tables that follow are intended to help you understand the financial performance of the Class A, Class L, Class I, Class C and Class R6 shares of the Fund, as applicable, for the past five years or since inception if less than five years. Certain information reflects financial results for a single Fund share. The total returns in the tables represent the rate that an investor would have earned (or lost) on an investment in the Fund (assuming reinvestment of all dividends and distributions).

The ratio of expenses to average net assets listed in the tables below for each class of shares of the Fund are based on the average net assets of the Fund for each of the periods listed in the tables. To the extent that the Fund's average net assets decrease over the Fund's next fiscal year, such expense ratios can be expected to increase, potentially significantly, because certain fixed costs will be spread over a smaller amount of assets.

The information below has been derived from the financial statements audited by Ernst & Young LLP, the Fund's independent registered public accounting firm. Ernst & Young LLP's report, along with the Fund's financial statements, are incorporated by reference into the Fund's SAI. The Annual Report to Shareholders (which includes the Fund's financial statements) and SAI are available at no cost from the Fund at the toll-free number noted on the back cover to this Prospectus.

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Morgan Stanley Prospectus \| **Financial Highlights**

**Mortgage Securities Trust**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Class A** | **Class A** | **Class A** | **Class A** | **Class A** |
| | **Year Ended October 31,** | **Year Ended October 31,** | **Year Ended October 31,** | **Year Ended October 31,** | **Year Ended October 31,** |
| <br>**Selected Per Share Data:** | **2022** | **2021** | **2020** | **2019** | **2018** |
| **Net asset value, beginning of period** | $8.60<br>| $8.62<br>| $8.79<br>| $8.39<br>| $8.65<br>|
| **Income (loss) from investment operations:** | **Income (loss) from investment operations:** | **Income (loss) from investment operations:** | **Income (loss) from investment operations:** | **Income (loss) from investment operations:** | **Income (loss) from investment operations:** |
| &nbsp;&nbsp;&nbsp; Net investment income  | 0.26<br>| 0.20<br>| 0.24<br>| 0.26<br>| 0.29<br>|
| &nbsp;&nbsp;&nbsp; Net realized and unrealized gain (loss)  | (1.17)<br>| (0.02)<br>| (0.07)<br>| 0.41<br>| (0.26)<br>|
| &nbsp;&nbsp;&nbsp;&nbsp; Total income (loss) from investment operations  | (0.91)<br>| 0.18<br>| 0.17<br>| 0.67<br>| 0.03<br>|
| **Less distributions from:** | **Less distributions from:** | **Less distributions from:** | **Less distributions from:** | **Less distributions from:** | **Less distributions from:** |
| &nbsp;&nbsp;&nbsp; Net investment Income  | (0.26)<br>| (0.20)<br>| (0.31)<br>| (0.27)<br>| (0.29)<br>|
| &nbsp;&nbsp;&nbsp; Net realized gain  | —<br>| —<br>| (0.03)<br>| —<br>| —<br>|
| &nbsp;&nbsp;&nbsp;&nbsp; Total distributions  | (0.26)<br>| (0.20)<br>| (0.34)<br>| (0.27)<br>| (0.29)<br>|
| **Net asset value, end of period** | $7.43<br>| $8.60<br>| $8.62<br>| $8.79<br>| $8.39<br>|
| **Total Return** | (10.77)%<br> <sup>(1)</sup> <br>| 2.04<br> %<br> <sup>(2)</sup> <br>| 2.09<br> %<br> <sup>(2)</sup> <br>| 8.04<br> %<br> <sup>(1)</sup> <br>| 0.32<br> %<br> <sup>(1)</sup> <br>|
| **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** |
| Net expenses | 0.99<br> %<br> <sup>(3)(4)</sup> <br>| 0.99<br> %<br> <sup>(3)(4)</sup> <br>| 0.99<br> %<br> <sup>(3)(4)</sup> <br>| 0.98<br> %<br> <sup>(3)(4)</sup> <br>| 0.98<br> %<br> <sup>(3)(4)</sup> <br>|
| Net investment income | 3.15<br> %<br> <sup>(3)(4)</sup> <br>| 2.25<br> %<br> <sup>(3)(4)</sup> <br>| 2.84<br> %<br> <sup>(3)(4)</sup> <br>| 3.10<br> %<br> <sup>(3)(4)</sup> <br>| 3.39<br> %<br> <sup>(3)(4)</sup> <br>|
| Rebate from Morgan Stanley affiliate | 0.01<br> %<br>| 0.01<br> %<br>| 0.01<br> %<br>| 0.02<br> %<br>| 0.02<br> %<br>|
| **Supplemental Data:** | **Supplemental Data:** | **Supplemental Data:** | **Supplemental Data:** | **Supplemental Data:** | **Supplemental Data:** |
| Net assets, end of period, in thousands | $39360<br>| $51289<br>| $48756<br>| $64085<br>| $60170<br>|
| Portfolio turnover rate | 334<br> %<br>| 317<br> %<br>| 233<br> %<br>| 261<br> %<br>| 370<br> %<br>|

---

---

| | | | |
|:---|:---|:---|:---|
| (1) | Does not reflect the deduction of sales charge. Calculated based on the net asset value as of the last business day of the period. | Does not reflect the deduction of sales charge. Calculated based on the net asset value as of the last business day of the period. | Does not reflect the deduction of sales charge. Calculated based on the net asset value as of the last business day of the period. |
| (2) | Calculated using the NAV for US GAAP financial reporting purposes and as such differs from the total return presented in the Fund Report and Performance Summary. Does not reflect the deduction of sales charge. | Calculated using the NAV for US GAAP financial reporting purposes and as such differs from the total return presented in the Fund Report and Performance Summary. Does not reflect the deduction of sales charge. | Calculated using the NAV for US GAAP financial reporting purposes and as such differs from the total return presented in the Fund Report and Performance Summary. Does not reflect the deduction of sales charge. |
| (3) | The ratios reflect the rebate of certain Fund expenses in connection with investments in a Morgan Stanley affiliate during the period. The effect of the rebate on the ratios is disclosed in the above table as "Rebate from Morgan Stanley affiliate." | The ratios reflect the rebate of certain Fund expenses in connection with investments in a Morgan Stanley affiliate during the period. The effect of the rebate on the ratios is disclosed in the above table as "Rebate from Morgan Stanley affiliate." | The ratios reflect the rebate of certain Fund expenses in connection with investments in a Morgan Stanley affiliate during the period. The effect of the rebate on the ratios is disclosed in the above table as "Rebate from Morgan Stanley affiliate." |
| (4) | If the Fund had borne all of its expenses that were waived by the Adviser/Administrator, the annualized expense and net investment income ratios would have been as follows: | If the Fund had borne all of its expenses that were waived by the Adviser/Administrator, the annualized expense and net investment income ratios would have been as follows: | If the Fund had borne all of its expenses that were waived by the Adviser/Administrator, the annualized expense and net investment income ratios would have been as follows: |
|  | PERIOD ENDED | EXPENSE<br>RATIO | NET INVESTMENT<br>INCOME RATIO |
|  | October 31, 2022 | 1.19% | 2.95% |
|  | October 31, 2021 | 1.15 | 2.09 |
|  | October 31, 2020 | 1.16 | 2.67 |
|  | October 31, 2019 | 1.20 | 2.88 |
|  | October 31, 2018 | 1.31 | 3.06 |

---

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Morgan Stanley Prospectus \| **Financial Highlights**

**Mortgage Securities Trust**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Class L** | **Class L** | **Class L** | **Class L** | **Class L** |
| | **Year Ended October 31,** | **Year Ended October 31,** | **Year Ended October 31,** | **Year Ended October 31,** | **Year Ended October 31,** |
| <br>**Selected Per Share Data:** | **2022** | **2021** | **2020** | **2019** | **2018** |
| **Net asset value, beginning of period** | $8.52<br>| $8.55<br>| $8.71<br>| $8.31<br>| $8.57<br>|
| **Income (loss) from investment operations:** | **Income (loss) from investment operations:** | **Income (loss) from investment operations:** | **Income (loss) from investment operations:** | **Income (loss) from investment operations:** | **Income (loss) from investment operations:** |
| &nbsp;&nbsp;&nbsp; Net investment income  | 0.24<br>| 0.17<br>| 0.22<br>| 0.23<br>| 0.27<br>|
| &nbsp;&nbsp;&nbsp; Net realized and unrealized gain (loss)  | (1.15)<br>| (0.03)<br>| (0.06)<br>| 0.41<br>| (0.27)<br>|
| &nbsp;&nbsp;&nbsp;&nbsp; Total income (loss) from investment operations  | (0.91)<br>| 0.14<br>| 0.16<br>| 0.64<br>| 0.00<br><sup>(1)</sup> <br>|
| **Less distributions from:** | **Less distributions from:** | **Less distributions from:** | **Less distributions from:** | **Less distributions from:** | **Less distributions from:** |
| &nbsp;&nbsp;&nbsp; Net investment income  | (0.24)<br>| (0.17)<br>| (0.29)<br>| (0.24)<br>| (0.26)<br>|
| &nbsp;&nbsp;&nbsp; Net realized gain  | —<br>| —<br>| (0.03)<br>| —<br>| —<br>|
| &nbsp;&nbsp;&nbsp;&nbsp; Total distributions  | (0.24)<br>| (0.17)<br>| (0.32)<br>| (0.24)<br>| (0.26)<br>|
| **Net asset value, end of period** | $7.37<br>| $8.52<br>| $8.55<br>| $8.71<br>| $8.31<br>|
| **Total Return** | (10.90)%<br> <sup>(2)</sup> <br>| 1.64<br> %<br> <sup>(3)</sup> <br>| 1.93<br> %<br> <sup>(3)</sup> <br>| 7.81<br> %<br> <sup>(2)</sup> <br>| 0.03<br> %<br> <sup>(2)</sup> <br>|
| **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** |
| Net expenses | 1.29<br> %<br> <sup>(4)(5)</sup> <br>| 1.29<br> %<br> <sup>(4)(5)</sup> <br>| 1.29<br> %<br> <sup>(4)(5)</sup> <br>| 1.28<br> %<br> <sup>(4)(5)</sup> <br>| 1.28<br> %<br> <sup>(4)(5)</sup> <br>|
| Net investment income | 2.88<br> %<br> <sup>(4)(5)</sup> <br>| 1.99<br> %<br> <sup>(4)(5)</sup> <br>| 2.58<br> %<br> <sup>(4)(5)</sup> <br>| 2.84<br> %<br> <sup>(4)(5)</sup> <br>| 3.14<br> %<br> <sup>(4)(5)</sup> <br>|
| Rebate from Morgan Stanley affiliate | 0.01<br> %<br>| 0.01<br> %<br>| 0.01<br> %<br>| 0.02<br> %<br>| 0.02<br> %<br>|
| **Supplemental Data:** | **Supplemental Data:** | **Supplemental Data:** | **Supplemental Data:** | **Supplemental Data:** | **Supplemental Data:** |
| Net assets, end of period, in thousands | $755<br>| $996<br>| $1144<br>| $1167<br>| $1150<br>|
| Portfolio turnover rate | 334<br> %<br>| 317<br> %<br>| 233<br> %<br>| 261<br> %<br>| 370<br> %<br>|

---

---

| | | | |
|:---|:---|:---|:---|
| (1) | Amount is less than $0.005 per share. | Amount is less than $0.005 per share. | Amount is less than $0.005 per share. |
| (2) | Calculated based on the net asset value as of the last business day of the period. | Calculated based on the net asset value as of the last business day of the period. | Calculated based on the net asset value as of the last business day of the period. |
| (3) | Calculated using the NAV for US GAAP financial reporting purposes and as such differs from the total return presented in the Fund Report and Performance Summary. | Calculated using the NAV for US GAAP financial reporting purposes and as such differs from the total return presented in the Fund Report and Performance Summary. | Calculated using the NAV for US GAAP financial reporting purposes and as such differs from the total return presented in the Fund Report and Performance Summary. |
| (4) | The ratios reflect the rebate of certain Fund expenses in connection with investments in a Morgan Stanley affiliate during the period. The effect of the rebate on the ratios is disclosed in the above table as "Rebate from Morgan Stanley affiliate." | The ratios reflect the rebate of certain Fund expenses in connection with investments in a Morgan Stanley affiliate during the period. The effect of the rebate on the ratios is disclosed in the above table as "Rebate from Morgan Stanley affiliate." | The ratios reflect the rebate of certain Fund expenses in connection with investments in a Morgan Stanley affiliate during the period. The effect of the rebate on the ratios is disclosed in the above table as "Rebate from Morgan Stanley affiliate." |
| (5) | If the Fund had borne all of its expenses that were waived by the Adviser/Administrator, the annualized expense and net investment income ratios would have been as follows: | If the Fund had borne all of its expenses that were waived by the Adviser/Administrator, the annualized expense and net investment income ratios would have been as follows: | If the Fund had borne all of its expenses that were waived by the Adviser/Administrator, the annualized expense and net investment income ratios would have been as follows: |
|  | PERIOD ENDED | EXPENSE<br>RATIO | NET INVESTMENT<br>INCOME RATIO |
|  | October 31, 2022 | 1.67% | 2.50% |
|  | October 31, 2021 | 1.61 | 1.67 |
|  | October 31, 2020 | 1.53 | 2.34 |
|  | October 31, 2019 | 1.71 | 2.41 |
|  | October 31, 2018 | 1.66 | 2.76 |

---

**44**

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[Back To **Table of Contents**](#TOC_15548)

Morgan Stanley Prospectus \| **Financial Highlights**

**Mortgage Securities Trust**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Class I** | **Class I** | **Class I** | **Class I** | **Class I** |
| | **Year Ended October 31,** | **Year Ended October 31,** | **Year Ended October 31,** | **Year Ended October 31,** | **Year Ended October 31,** |
| <br>**Selected Per Share Data:** | **2022** | **2021** | **2020** | **2019** | **2018** |
| **Net asset value, beginning of period** | $8.45<br>| $8.48<br>| $8.64<br>| $8.24<br>| $8.50<br>|
| **Income (loss) from investment operations:** | **Income (loss) from investment operations:** | **Income (loss) from investment operations:** | **Income (loss) from investment operations:** | **Income (loss) from investment operations:** | **Income (loss) from investment operations:** |
| &nbsp;&nbsp;&nbsp; Net investment income  | 0.28<br>| 0.23<br>| 0.27<br>| 0.28<br>| 0.32<br>|
| &nbsp;&nbsp;&nbsp; Net realized and unrealized gain (loss)  | (1.14)<br>| (0.04)<br>| (0.06)<br>| 0.41<br>| (0.27)<br>|
| &nbsp;&nbsp;&nbsp;&nbsp; Total income (loss) from investment operations  | (0.86)<br>| 0.19<br>| 0.21<br>| 0.69<br>| 0.05<br>|
| **Less distributions from:** | **Less distributions from:** | **Less distributions from:** | **Less distributions from:** | **Less distributions from:** | **Less distributions from:** |
| &nbsp;&nbsp;&nbsp; Net investment income  | (0.28)<br>| (0.22)<br>| (0.34)<br>| (0.29)<br>| (0.31)<br>|
| &nbsp;&nbsp;&nbsp; Net realized gain  | —<br>| —<br>| (0.03)<br>| —<br>| —<br>|
| &nbsp;&nbsp;&nbsp;&nbsp; Total distributions  | (0.28)<br>| (0.22)<br>| (0.37)<br>| (0.29)<br>| (0.31)<br>|
| **Net asset value, end of period** | $7.31<br>| $8.45<br>| $8.48<br>| $8.64<br>| $8.24<br>|
| **Total Return** | (10.33)%<br> <sup>(1)</sup> <br>| 2.28<br> %<br> <sup>(2)</sup> <br>| 2.58<br> %<br> <sup>(2)</sup> <br>| 8.53<br> %<br> <sup>(1)</sup> <br>| 0.64<br> %<br> <sup>(1)</sup> <br>|
| **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** |
| Net expenses | 0.69<br> %<br> <sup>(3)(4)</sup> <br>| 0.69<br> %<br> <sup>(3)(4)</sup> <br>| 0.69<br> %<br> <sup>(3)(4)</sup> <br>| 0.69<br> %<br> <sup>(3)(4)</sup> <br>| 0.68<br> %<br> <sup>(3)(4)</sup> <br>|
| Net investment income | 3.57<br> %<br> <sup>(3)(4)</sup> <br>| 2.59<br> %<br> <sup>(3)(4)</sup> <br>| 3.20<br> %<br> <sup>(3)(4)</sup> <br>| 3.42<br> %<br> <sup>(3)(4)</sup> <br>| 3.75<br> %<br> <sup>(3)(4)</sup> <br>|
| Rebate from Morgan Stanley affiliate | 0.01<br> %<br>| 0.01<br> %<br>| 0.01<br> %<br>| 0.01<br> %<br>| 0.02<br> %<br>|
| **Supplemental Data:** | **Supplemental Data:** | **Supplemental Data:** | **Supplemental Data:** | **Supplemental Data:** | **Supplemental Data:** |
| Net assets, end of period, in thousands | $136895<br>| $135147<br>| $116307<br>| $125752<br>| $63767<br>|
| Portfolio turnover rate | 334<br> %<br>| 317<br> %<br>| 233<br> %<br>| 261<br> %<br>| 370<br> %<br>|

---

---

| | | | |
|:---|:---|:---|:---|
| (1) | Calculated based on the net asset value as of the last business day of the period. | Calculated based on the net asset value as of the last business day of the period. | Calculated based on the net asset value as of the last business day of the period. |
| (2) | Calculated using the NAV for US GAAP financial reporting purposes and as such differs from the total return presented in the Fund Report and Performance Summary. | Calculated using the NAV for US GAAP financial reporting purposes and as such differs from the total return presented in the Fund Report and Performance Summary. | Calculated using the NAV for US GAAP financial reporting purposes and as such differs from the total return presented in the Fund Report and Performance Summary. |
| (3) | The ratios reflect the rebate of certain Fund expenses in connection with investments in a Morgan Stanley affiliate during the period. The effect of the rebate on the ratios is disclosed in the above table as "Rebate from Morgan Stanley affiliate." | The ratios reflect the rebate of certain Fund expenses in connection with investments in a Morgan Stanley affiliate during the period. The effect of the rebate on the ratios is disclosed in the above table as "Rebate from Morgan Stanley affiliate." | The ratios reflect the rebate of certain Fund expenses in connection with investments in a Morgan Stanley affiliate during the period. The effect of the rebate on the ratios is disclosed in the above table as "Rebate from Morgan Stanley affiliate." |
| (4) | If the Fund had borne all of its expenses that were waived by the Adviser/Administrator, the annualized expense and net investment income ratios would have been as follows: | If the Fund had borne all of its expenses that were waived by the Adviser/Administrator, the annualized expense and net investment income ratios would have been as follows: | If the Fund had borne all of its expenses that were waived by the Adviser/Administrator, the annualized expense and net investment income ratios would have been as follows: |
|  | PERIOD ENDED | EXPENSE<br>RATIO | NET INVESTMENT<br>INCOME RATIO |
|  | October 31, 2022 | 0.91% | 3.35% |
|  | October 31, 2021 | 0.87 | 2.41 |
|  | October 31, 2020 | 0.91 | 2.98 |
|  | October 31, 2019 | 0.94 | 3.17 |
|  | October 31, 2018 | 1.05 | 3.38 |

---

**45**

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[Back To **Table of Contents**](#TOC_15548)

Morgan Stanley Prospectus \| **Financial Highlights**

**Mortgage Securities Trust**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Class C** | **Class C** | **Class C** | **Class C** | **Class C** |
| | **Year Ended October 31,** | **Year Ended October 31,** | **Year Ended October 31,** | **Year Ended October 31,** | **Year Ended October 31,** |
| <br>**Selected Per Share Data:** | **2022** | **2021** | **2020** | **2019** | **2018** |
| **Net asset value, beginning of period** | $8.53<br>| $8.55<br>| $8.72<br>| $8.32<br>| $8.58<br>|
| **Income (loss) from investment operations:** | **Income (loss) from investment operations:** | **Income (loss) from investment operations:** | **Income (loss) from investment operations:** | **Income (loss) from investment operations:** | **Income (loss) from investment operations:** |
| &nbsp;&nbsp;&nbsp; Net investment income  | 0.20<br>| 0.13<br>| 0.18<br>| 0.19<br>| 0.22<br>|
| &nbsp;&nbsp;&nbsp; Net realized and unrealized gain (loss)  | (1.16)<br>| (0.02)<br>| (0.07)<br>| 0.41<br>| (0.26)<br>|
| &nbsp;&nbsp;&nbsp;&nbsp; Total income (loss) from investment operations  | (0.96)<br>| 0.11<br>| 0.11<br>| 0.60<br>| (0.04)<br>|
| **Less distributions from:** | **Less distributions from:** | **Less distributions from:** | **Less distributions from:** | **Less distributions from:** | **Less distributions from:** |
| &nbsp;&nbsp;&nbsp; Net investment income  | (0.20)<br>| (0.13)<br>| (0.25)<br>| (0.20)<br>| (0.22)<br>|
| &nbsp;&nbsp;&nbsp; Net realized gain  | —<br>| —<br>| (0.03)<br>| —<br>| —<br>|
| &nbsp;&nbsp;&nbsp;&nbsp; Total distributions  | (0.20)<br>| (0.13)<br>| (0.28)<br>| (0.20)<br>| (0.22)<br>|
| **Net asset value, end of period** | $7.37<br>| $8.53<br>| $8.55<br>| $8.72<br>| $8.32<br>|
| **Total Return** | (11.46)%<br> <sup>(1)</sup> <br>| 1.25<br> %<br> <sup>(2)</sup> <br>| 1.33<br> %<br> <sup>(2)</sup> <br>| 7.31<br> %<br> <sup>(1)</sup> <br>| (0.47)%<br> <sup>(1)</sup> <br>|
| **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** |
| Net expenses | 1.79<br> %<br> <sup>(3)(4)</sup> <br>| 1.79<br> %<br> <sup>(3)(4)</sup> <br>| 1.76<br> %<br> <sup>(3)(4)</sup> <br>| 1.74<br> %<br> <sup>(3)(4)</sup> <br>| 1.78<br> %<br> <sup>(3)(4)</sup> <br>|
| Net investment income | 2.45<br> %<br> <sup>(3)(4)</sup> <br>| 1.52<br> %<br> <sup>(3)(4)</sup> <br>| 2.10<br> %<br> <sup>(3)(4)</sup> <br>| 2.36<br> %<br> <sup>(3)(4)</sup> <br>| 2.62<br> %<br> <sup>(3)(4)</sup> <br>|
| Rebate from Morgan Stanley affiliate | 0.01<br> %<br>| 0.01<br> %<br>| 0.01<br> %<br>| 0.02<br> %<br>| 0.02<br> %<br>|
| **Supplemental Data:** | **Supplemental Data:** | **Supplemental Data:** | **Supplemental Data:** | **Supplemental Data:** | **Supplemental Data:** |
| Net assets, end of period, in thousands | $2978<br>| $2695<br>| $5110<br>| $6176<br>| $4427<br>|
| Portfolio turnover rate | 334<br> %<br>| 317<br> %<br>| 233<br> %<br>| 261<br> %<br>| 370<br> %<br>|

---

---

| | | | |
|:---|:---|:---|:---|
| (1) | Does not reflect the deduction of sales charge. Calculated based on the net asset value as of the last business day of the period. | Does not reflect the deduction of sales charge. Calculated based on the net asset value as of the last business day of the period. | Does not reflect the deduction of sales charge. Calculated based on the net asset value as of the last business day of the period. |
| (2) | Calculated using the NAV for US GAAP financial reporting purposes and as such differs from the total return presented in the Fund Report and Performance Summary. Does not reflect the deduction of sales charge. | Calculated using the NAV for US GAAP financial reporting purposes and as such differs from the total return presented in the Fund Report and Performance Summary. Does not reflect the deduction of sales charge. | Calculated using the NAV for US GAAP financial reporting purposes and as such differs from the total return presented in the Fund Report and Performance Summary. Does not reflect the deduction of sales charge. |
| (3) | The ratios reflect the rebate of certain Fund expenses in connection with investments in a Morgan Stanley affiliate during the period. The effect of the rebate on the ratios is disclosed in the above table as "Rebate from Morgan Stanley affiliate." | The ratios reflect the rebate of certain Fund expenses in connection with investments in a Morgan Stanley affiliate during the period. The effect of the rebate on the ratios is disclosed in the above table as "Rebate from Morgan Stanley affiliate." | The ratios reflect the rebate of certain Fund expenses in connection with investments in a Morgan Stanley affiliate during the period. The effect of the rebate on the ratios is disclosed in the above table as "Rebate from Morgan Stanley affiliate." |
| (4) | If the Fund had borne all of its expenses that were waived by the Adviser/Administrator, the annualized expense and net investment income ratios would have been as follows: | If the Fund had borne all of its expenses that were waived by the Adviser/Administrator, the annualized expense and net investment income ratios would have been as follows: | If the Fund had borne all of its expenses that were waived by the Adviser/Administrator, the annualized expense and net investment income ratios would have been as follows: |
|  | PERIOD ENDED | EXPENSE<br>RATIO | NET INVESTMENT<br>INCOME RATIO |
|  | October 31, 2022 | 1.98% | 2.26% |
|  | October 31, 2021 | 1.94 | 1.37 |
|  | October 31, 2020 | 1.90 | 1.96 |
|  | October 31, 2019 | 1.92 | 2.18 |
|  | October 31, 2018 | 2.07 | 2.34 |

---

**46**

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[Back To **Table of Contents**](#TOC_15548)

Morgan Stanley Prospectus \| **Financial Highlights**

**Mortgage Securities Trust**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Class R6<sup>(2)</sup>**  | **Class R6<sup>(2)</sup>**  | **Class R6<sup>(2)</sup>**  | **Class R6<sup>(2)</sup>**  | **Class R6<sup>(2)</sup>**  |
| | **Year Ended October 31,** | **Year Ended October 31,** | **Year Ended October 31,** | **Year Ended October 31,** | **Period from June 15, 2018<sup>(1)</sup>**<br>**to October 31, 2018**  |
| <br>**Selected Per Share Data:** | **2022** | **2021** | **2020** | **2019** | **Period from June 15, 2018<sup>(1)</sup>**<br>**to October 31, 2018**  |
| **Net asset value, beginning of period** | $8.45<br>| $8.47<br>| $8.64<br>| $8.24<br>| $8.35<br>|
| **Income (loss) from investment operations:** | **Income (loss) from investment operations:** | **Income (loss) from investment operations:** | **Income (loss) from investment operations:** | **Income (loss) from investment operations:** | **Income (loss) from investment operations:** |
| &nbsp;&nbsp;&nbsp; Net investment income  | 0.29<br>| 0.23<br>| 0.27<br>| 0.29<br>| 0.12<br>|
| &nbsp;&nbsp;&nbsp; Net realized and unrealized gain (loss)  | (1.15)<br>| (0.03)<br>| (0.07)<br>| 0.41<br>| (0.12)<br>|
| &nbsp;&nbsp;&nbsp;&nbsp; Total income (loss) from investment operations  | (0.86)<br>| 0.20<br>| 0.20<br>| 0.70<br>| 0.00<br><sup>(3)</sup> <br>|
| **Less distributions from:** | **Less distributions from:** | **Less distributions from:** | **Less distributions from:** | **Less distributions from:** | **Less distributions from:** |
| &nbsp;&nbsp;&nbsp; Net investment income  | (0.29)<br>| (0.22)<br>| (0.34)<br>| (0.30)<br>| (0.11)<br>|
| &nbsp;&nbsp;&nbsp; Net realized gain  | —<br>| —<br>| (0.03)<br>| —<br>| —<br>|
| &nbsp;&nbsp;&nbsp;&nbsp; Total distributions  | (0.29)<br>| (0.22)<br>| (0.37)<br>| (0.30)<br>| (0.11)<br>|
| **Net asset value, end of period** | $7.30<br>| $8.45<br>| $8.47<br>| $8.64<br>| $8.24<br>|
| **Total Return** | (10.41)%<br> <sup>(4)</sup> <br>| 2.43<br> %<br> <sup>(5)</sup> <br>| 2.51<br> %<br> <sup>(5)</sup> <br>| 8.58<br> %<br> <sup>(4)</sup> <br>| 0.07<br> %<br> <sup>(4)(9)</sup> <br>|
| **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** | **Ratios to Average Net Assets:** |
| Net expenses | 0.64<br> %<br> <sup>(6)(7)</sup> <br>| 0.65<br> %<br> <sup>(6)(7)</sup> <br>| 0.64<br> %<br> <sup>(6)(7)</sup> <br>| 0.63<br> %<br> <sup>(6)(7)</sup> <br>| 0.62<br> %<br> <sup>(6)(7)(10)</sup> <br>|
| Net investment income | 3.59<br> %<br> <sup>(6)(7)</sup> <br>| 2.63<br> %<br> <sup>(6)(7)</sup> <br>| 3.26<br> %<br> <sup>(6)(7)</sup> <br>| 3.53<br> %<br> <sup>(6)(7)</sup> <br>| 3.77<br> %<br> <sup>(6)(7)(10)</sup> <br>|
| Rebate from Morgan Stanley affiliate | 0.01<br> %<br>| 0.00<br> %<br> <sup>(8)</sup> <br>| 0.01<br> %<br>| 0.02<br> %<br>| 0.03<br> %<br> <sup>(10)</sup> <br>|
| **Supplemental Data:** | **Supplemental Data:** | **Supplemental Data:** | **Supplemental Data:** | **Supplemental Data:** | **Supplemental Data:** |
| Net assets, end of period, in thousands | $10<br>| $11<br>| $11<br>| $11<br>| $10<br>|
| Portfolio turnover rate | 334<br> %<br>| 317<br> %<br>| 233<br> %<br>| 261<br> %<br>| 370<br> %<br>|

---

---

| | | | |
|:---|:---|:---|:---|
| (1) | Commencement of Offering. | Commencement of Offering. | Commencement of Offering. |
| (2) | Effective April 29, 2022, Class IS shares were renamed Class R6 shares. | Effective April 29, 2022, Class IS shares were renamed Class R6 shares. | Effective April 29, 2022, Class IS shares were renamed Class R6 shares. |
| (3) | Amount is less than $0.005 per share. | Amount is less than $0.005 per share. | Amount is less than $0.005 per share. |
| (4) | Calculated based on the net asset value as of the last business day of the period. | Calculated based on the net asset value as of the last business day of the period. | Calculated based on the net asset value as of the last business day of the period. |
| (5) | Calculated using the NAV for US GAAP financial reporting purposes and as such differs from the total return presented in the Fund Report and Performance Summary. | Calculated using the NAV for US GAAP financial reporting purposes and as such differs from the total return presented in the Fund Report and Performance Summary. | Calculated using the NAV for US GAAP financial reporting purposes and as such differs from the total return presented in the Fund Report and Performance Summary. |
| (6) | The ratios reflect the rebate of certain Fund expenses in connection with investments in a Morgan Stanley affiliate during the period. The effect of the rebate on the ratios is disclosed in the above table as "Rebate from Morgan Stanley affiliate." | The ratios reflect the rebate of certain Fund expenses in connection with investments in a Morgan Stanley affiliate during the period. The effect of the rebate on the ratios is disclosed in the above table as "Rebate from Morgan Stanley affiliate." | The ratios reflect the rebate of certain Fund expenses in connection with investments in a Morgan Stanley affiliate during the period. The effect of the rebate on the ratios is disclosed in the above table as "Rebate from Morgan Stanley affiliate." |
| (7) | If the Fund had borne all of its expenses that were waived by the Adviser/Administrator, the annualized expense and net investment loss ratios would have been as follows: | If the Fund had borne all of its expenses that were waived by the Adviser/Administrator, the annualized expense and net investment loss ratios would have been as follows: | If the Fund had borne all of its expenses that were waived by the Adviser/Administrator, the annualized expense and net investment loss ratios would have been as follows: |
|  | PERIOD ENDED | EXPENSE<br>RATIO | NET INVESTMENT<br>(LOSS) RATIO |
|  | October 31, 2022 | 20.23% | (16.00)% |
|  | October 31, 2021 | 20.64 | (17.36) |
|  | October 31, 2020 | 19.93 | (16.03) |
|  | October 31, 2019 | 21.33 | (17.17) |
|  | October 31, 2018 | 13.46 | (9.07) |
| (8) | Amount is less than 0.005%. | Amount is less than 0.005%. | Amount is less than 0.005%. |
| (9) | Not annualized. | Not annualized. | Not annualized. |
| (10) | Annualized. | Annualized. | Annualized. |

---

**47**

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[Back To **Table of Contents**](#TOC_15548)

Morgan Stanley Prospectus \| **Appendix**

Appendix A

**Intermediary-Specific Sales Charge Waivers and Discounts**

The availability of certain sales charge waivers and discounts will depend on whether you purchase your shares directly from the Fund or through a Financial Intermediary. Financial Intermediaries may have different policies and procedures regarding the availability of front-end sales charge waivers or CDSC waivers, which are discussed below. In all instances, it is the purchaser's responsibility to notify the Fund or the purchaser's Financial Intermediary at the time of purchase of any relationship or other facts qualifying the purchaser for sales charge waivers or discounts. For waivers and discounts not available through a particular Financial Intermediary, shareholders will have to purchase Fund shares directly from the Fund (or the Distributor) or through another Financial Intermediary to receive these waivers or discounts. A Financial Intermediary's administration and implementation of its particular policies with respect to any variations, waivers and/or discounts is neither supervised nor verified by the Fund, the Adviser or the Distributor. The Fund and the Distributor do not provide investment advice or recommendations or any form of tax or legal advice to existing or potential shareholders with respect to investment transactions involving the Fund.

\*\*\*\*\*

**Merrill Lynch**

Shareholders purchasing Fund shares through a Merrill Lynch platform or account will be eligible only for the following load waivers (front-end sales charge waivers and contingent deferred, or back-end, sales charge waivers) and discounts, which may differ from those disclosed elsewhere in this Fund's prospectus or SAI.

**Front-end Sales Load Waivers on Class A Shares available at Merrill Lynch**

• Employer-sponsored retirement, deferred compensation and employee benefit plans (including health savings accounts) and trusts used to fund those plans, provided that the shares are not held in a commission-based brokerage account and shares are held for the benefit of the plan

• Shares purchased by a 529 Plan (does not include 529 Plan units or 529-specific share classes or equivalents)

• Shares purchased through a Merrill Lynch affiliated investment advisory program

• Shares exchanged due to the holdings moving from a Merrill Lynch affiliated investment advisory program to a Merrill Lynch brokerage (non-advisory) account pursuant to Merrill Lynch's policies relating to sales load discounts and waivers

• Shares purchased by third party investment advisors on behalf of their advisory clients through Merrill Lynch's platform

• Shares of funds purchased through the Merrill Edge Self-Directed platform (if applicable)

• Shares purchased through reinvestment of capital gains distributions and dividend reinvestment when purchasing shares of the same fund (but not any other fund within the fund family)

• Shares exchanged from Class C (i.e. level-load) shares of the same fund pursuant to Merrill Lynch's policies relating to sales load discounts and waivers

• Employees and registered representatives of Merrill Lynch or its affiliates and their family members

• Directors or Trustees of the Fund, and employees of the Fund's investment adviser or any of its affiliates, as described in this prospectus

• Eligible shares purchased from the proceeds of redemptions within the same fund family, provided (1) the repurchase occurs within 90 days following the redemption, (2) the redemption and purchase occur in the same account, and (3) redeemed shares were subject to a front-end or deferred sales load (known as Rights of Reinstatement). Automated transactions (i.e. systematic purchases and withdrawals) and purchases made after shares are automatically sold to pay Merrill Lynch's account maintenance fees are not eligible for reinstatement

**CDSC Waivers on A and C Shares available at Merrill Lynch**

• Death or disability of the shareholder

• Shares sold as part of a systematic withdrawal plan as described in the Fund's Prospectus

• Return of excess contributions from an IRA Account

• Shares sold as part of a required minimum distribution for IRA and retirement accounts pursuant to the Internal Revenue Code

• Shares sold to pay Merrill Lynch fees but only if the transaction is initiated by Merrill Lynch

• Shares acquired through a right of reinstatement

• Shares held in retirement brokerage accounts, that are exchanged for a lower cost share class due to transfer to certain fee based accounts or platforms (applicable to A and C shares only)

**48**

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Morgan Stanley Prospectus \| **Appendix**

Appendix A (Con't)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

• Shares received through an exchange due to the holdings moving from a Merrill Lynch affiliated investment advisory program to a Merrill Lynch brokerage (non-advisory) account pursuant to Merrill Lynch's policies relating to sales load discounts and waivers

**Front-end Load Discounts Available at Merrill Lynch: Breakpoints, Rights of Accumulation and Letters of Intent** 

• Breakpoints as described in this Prospectus

• Rights of Accumulation (ROA) which entitle shareholders to breakpoint discounts as described in the Fund's prospectus will be automatically calculated based on the aggregated holding of fund family assets held by accounts (including 529 program holdings, where applicable) within the purchaser's household at Merrill Lynch. Eligible fund family assets not held at Merrill Lynch may be included in the ROA calculation only if the shareholder notifies his or her financial advisor about such assets

• Letters of Intent (LOI) which allow for breakpoint discounts based on anticipated purchases within a fund family, through Merrill Lynch, over a 13-month period of time (if applicable)

**Morgan Stanley Wealth Management**

Shareholders purchasing Fund shares through a Morgan Stanley Wealth Management transactional brokerage account will be eligible only for the following front-end sales charge waivers with respect to Class A shares, which may differ from and may be more limited than those disclosed elsewhere in this Prospectus or SAI, except that such shareholders will continue to be eligible for front-end sales charge breakpoint discounts as described in the Prospectus.

**Front-end Sales Charge Waivers on Class A Shares available at Morgan Stanley Wealth Management**

• Employer-sponsored retirement plans (e.g., 401(k) plans, 457 plans, employer-sponsored 403(b) plans, profit sharing and money purchase pension plans and defined benefit plans). For purposes of this provision, employer-sponsored retirement plans do not include SEP IRAs, SIMPLE IRAs, SAR-SEPs or Keogh plans

• Morgan Stanley employee and employee-related accounts according to Morgan Stanley's account linking rules

• Shares purchased through reinvestment of dividends and capital gains distributions when purchasing shares of the same fund

• Shares purchased through a Morgan Stanley self-directed brokerage account

• Class C (i.e., level-load) shares that are no longer subject to a contingent deferred sales charge and are converted to Class A shares of the same fund pursuant to Morgan Stanley Wealth Management's share class conversion program

• Shares purchased from the proceeds of redemptions within the same fund family, provided (i) the repurchase occurs within 90 days following the redemption, (ii) the redemption and purchase occur in the same account, and (iii) redeemed shares were subject to a front-end or deferred sales charge

**Raymond James & Associates, Inc., Raymond James Financial Services, Inc. and each entity's affiliates ("Raymond James")**

Shareholders purchasing fund shares through a Raymond James platform or account, or through an introducing broker-dealer or independent registered investment adviser for which Raymond James provides trade execution, clearance, and/or custody services, will be eligible only for the following load waivers (front-end sales charge waivers and contingent deferred, or back-end, sales charge waivers) and discounts, which may differ from those disclosed elsewhere in this Fund's prospectus or SAI.

**Front-end Sales Load Waivers on Class A Shares available at Raymond James**

• Shares purchased in an investment advisory program

• Shares purchased within the same fund family through a systematic reinvestment of capital gains and dividend distributions

• Employees and registered representatives of Raymond James or its affiliates and their family members as designated by Raymond James

• Shares purchased from the proceeds of redemptions within the same fund family, provided (1) the repurchase occurs within 90 days following the redemption, (2) the redemption and purchase occur in the same account, and (3) redeemed shares were subject to a front-end or deferred sales load (known as Rights of Reinstatement)

• A shareholder in the Fund's Class C shares will have their shares converted at net asset value to Class A shares (or the appropriate share class) of the Fund if the shares are no longer subject to a CDSC and the conversion is in line with the policies and procedures of Raymond James

**CDSC Waivers on Classes A and C shares available at Raymond James**

• Death or disability of the shareholder

**49**

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Morgan Stanley Prospectus \| **Appendix**

Appendix A (Con't)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

• Shares sold as part of a systematic withdrawal plan as described in the Fund's Prospectus

• Return of excess contributions from an IRA Account

• Shares sold as part of a required minimum distribution for IRA and retirement accounts due to the shareholder reaching the qualified age based on applicable IRS regulations as described in the Fund's Prospectus

• Shares sold to pay Raymond James fees but only if the transaction is initiated by Raymond James

• Shares acquired through a right of reinstatement

**Front-end load discounts available at Raymond James: breakpoints, rights of accumulation, and/or letters of intent**

• Breakpoints as described in this Prospectus

• Rights of accumulation which entitle shareholders to breakpoint discounts will be automatically calculated based on the aggregated holding of fund family assets held by accounts within the purchaser's household at Raymond James. Eligible fund family assets not held at Raymond James may be included in the calculation of rights of accumulation only if the shareholder notifies his or her financial advisor about such assets

• Letters of intent which allow for breakpoint discounts based on anticipated purchases within a fund family, over a 13-month time period. Eligible fund family assets not held at Raymond James may be included in the calculation of letters of intent only if the shareholder notifies his or her financial advisor about such assets

**Oppenheimer & Co. Inc. ("OPCO")**

Shareholders purchasing Fund shares through an OPCO platform or account are eligible only for the following load waivers (front-end sales charge waivers and contingent deferred, or back-end, sales charge waivers) and discounts, which may differ from those disclosed elsewhere in this Fund's prospectus or SAI.

**Front-end Sales Load Waivers on Class A Shares available at OPCO**

• Employer-sponsored retirement, deferred compensation and employee benefit plans (including health savings accounts) and trusts used to fund those plans, provided that the shares are not held in a commission-based brokerage account and shares are held for the benefit of the plan

• Shares purchased by or through a 529 Plan

• Shares purchased through an OPCO affiliated investment advisory program

• Shares purchased through reinvestment of capital gains distributions and dividend reinvestment when purchasing shares of the same fund (but not any other fund within the fund family

• Shares purchased from the proceeds of redemptions within the same fund family, provided (1) the repurchase occurs within 90 days following the redemption, (2) the redemption and purchase occur in the same account, and (3) redeemed shares were subject to a front-end or deferred sales load (known as Rights of Restatement).

• A shareholder in the Fund's Class C shares will have their shares converted at net asset value to Class A shares (or the appropriate share class) of the Fund if the shares are no longer subject to a CDSC and the conversion is in line with the policies and procedures of OPCO

• Employees and registered representatives of OPCO or its affiliates and their family members

• Directors or Trustees of the Fund, and employees of the Fund's investment adviser or any of its affiliates, as described in this prospectus

**CDSC Waivers on A and C Shares available at OPCO**

• Death or disability of the shareholder

• Shares sold as part of a systematic withdrawal plan as described in the Fund's prospectus

• Return of excess contributions from an IRA Account

• Shares sold as part of a required minimum distribution for IRA and retirement accounts due to the shareholder reaching the qualified age based on applicable IRS regulations as described in the prospectus

• Shares sold to pay OPCO fees but only if the transaction is initiated by OPCO

• Shares acquired through a right of reinstatement

**50**

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Morgan Stanley Prospectus \| **Appendix**

Appendix A (Con't)

**Front-end load Discounts Available at OPCO: Breakpoints, Rights of Accumulation & Letters of Intent**

• Breakpoints as described in this prospectus

• Rights of Accumulation (ROA) which entitle shareholders to breakpoint discounts will be automatically calculated based on the aggregated holding of fund family assets held by accounts within the purchaser's household at OPCO. Eligible fund family assets not held at OPCO may be included in the ROA calculation only if the shareholder notifies his or her financial advisor about such assets

**Janney**

If you purchase Fund shares through a Janney Montgomery Scott LLC ("Janney") brokerage account, you are eligible for the following load waivers (front-end sales charge waivers and CDSC, or back-end sales charge waivers) and discounts, which may differ from those disclosed elsewhere in this Prospectus or SAI.

**Front-end Sales Charge Waivers on Class A shares available at Janney**

• Shares purchased through reinvestment of capital gains distributions and dividend reinvestment when purchasing shares of the same fund (but not any other fund within the fund family)

• Shares purchased by employees and registered representatives of Janney or its affiliates and their family members as designated by Janney

• Shares purchased from the proceeds of redemptions within the same fund family, provided (1) the repurchase occurs within 90 days following the redemption, (2) the redemption and purchase occur in the same account, and (3) redeemed shares were subject to a front-end or deferred sales load (i.e., right of reinstatement)

• Employer-sponsored retirement plans (e.g., 401(k) plans, 457 plans, employer-sponsored 403(b) plans, profit sharing and money purchase pension plans and defined benefit plans). For purposes of this provision, employer-sponsored retirement plans do not include SEP IRAs, SIMPLE IRAs, SAR-SEPs or Keogh plans

• Shares acquired through a right of reinstatement

• Class C shares that are no longer subject to a contingent deferred sales charge and are converted to Class A shares of the same fund pursuant to Janney's policies and procedures

**CDSC Waivers on Class A and C shares available at Janney**

• Shares sold upon the death or disability of the shareholder

• Shares sold as part of a systematic withdrawal plan as described in the Fund's Prospectus

• Shares purchased in connection with a return of excess contributions from an IRA account

• Shares sold as part of a required minimum distribution for IRA and other retirement accounts due to the shareholder reaching age 70½ as described in the Fund's Prospectus

• Shares sold to pay Janney fees but only if the transaction is initiated by Janney

• Shares acquired through a right of reinstatement

• Shares exchanged into the same share class of a different fund

**Front-end Sales Charge\* Discounts available at Janney: Breakpoints, Rights of Accumulation and/or Letters of Intent**

• Breakpoints as described in this Prospectus

• Rights of Accumulation (ROA), which entitle shareholders to breakpoint discounts, will be automatically calculated based on the aggregated holding of fund family assets held by accounts within the purchaser's household at Janney. Eligible fund family assets not held at Janney may be included in the ROA calculation only if the shareholder notifies his or her financial advisor about such assets

• Letters of Intent which allow for breakpoint discounts based on anticipated purchases within a fund family, over a 13-month time period. Eligible fund family assets not held at Janney Montgomery Scott may be included in the calculation of letters of intent only if the shareholder notifies his or her financial advisor about such assets

\*Also referred to as an "initial sales charge."

**51**

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Morgan Stanley Prospectus \| **Appendix**

Appendix A (Con't)

**Stifel, Nicolaus & Company, Incorporated ("Stifel")**

Effective July 1, 2020, shareholders purchasing Fund shares through a Stifel platform or account or who own shares for which Stifel or an affiliate is the broker-dealer of record are eligible for the following additional sales charge waiver.

**Front-end Sales Load Waiver on Class A Shares at Stifel**

• Class C (i.e., level-load) shares that are no longer subject to a contingent deferred sales charge and are converted to Class A shares of the same fund pursuant to Stifel's policies and procedures. All other sales charge waivers and reductions described elsewhere in the Fund's Prospectus or SAI still apply.

**Robert W. Baird & Co. ("Baird")**

Shareholders purchasing fund shares through a Baird platform or account will only be eligible for the following sales charge waivers (front-end sales charge waivers and CDSC waivers) and discounts, which may differ from those disclosed elsewhere in this prospectus or the SAI.

**Front-End Sales Charge Waivers on A-shares Available at Baird**

• Shares purchased through reinvestment of capital gains distributions and dividend reinvestment when purchasing shares of the same fund

• Shares purchased by employees and registered representatives of Baird or its affiliate and their family members as designated by Baird

• Shares purchased using the proceeds of redemptions within the same fund family, provided (1) the repurchase occurs within 90 days following the redemption, (2) the redemption and purchase occur in the same accounts, and (3) redeemed shares were subject to a front-end or deferred sales charge (known as rights of reinstatement)

• A shareholder in the Funds C Shares will have their share converted at net asset value to A shares of the same fund if the shares are no longer subject to CDSC and the conversion is in line with the policies and procedures of Baird

• Employer-sponsored retirement plans or charitable accounts in a transactional brokerage account at Baird, including 401(k) plans, 457 plans, employer-sponsored 403(b) plans, profit sharing and money purchase pension plans and defined benefit plans. For purposes of this provision, employer-sponsored retirement plans do not include SEP IRAs, SIMPLE IRAs or SAR-SEPs

**CDSC Waivers on A and C shares Available at Baird**

• Shares sold due to death or disability of the shareholder

• Shares sold as part of a systematic withdrawal plan as described in the Fund's Prospectus

• Shares bought due to returns of excess contributions from an IRA Account

• Shares sold as part of a required minimum distribution for IRA and retirement accounts due to the shareholder reaching the qualified age based on applicable Internal Revenue Service regulations as described in the Fund's prospectus

• Shares sold to pay Baird fees but only if the transaction is initiated by Baird

• Shares acquired through a right of reinstatement

**Front-End Sales Charge Discounts Available at Baird: Breakpoints and/or Rights of Accumulations**

• Breakpoints as described in this prospectus

• Rights of accumulations which entitles shareholders to breakpoint discounts will be automatically calculated based on the aggregated holding of fund family assets held by accounts within the purchaser's household at Baird. Eligible fund family assets not held at Baird may be included in the rights of accumulations calculation only if the shareholder notifies his or her financial advisor about such assets

• Letters of Intent (LOI) allow for breakpoint discounts based on anticipated purchases within a fund family, through Baird, over a 13-month period of time

**Ameriprise Financial**

The following information applies to Class A share purchases if you have an account with or otherwise purchase Fund shares through Ameriprise Financial:

**52**

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Morgan Stanley Prospectus \| **Appendix**

Appendix A (Con't)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

• Effective January 15, 2021, shareholders purchasing Fund shares through an Ameriprise Financial retail brokerage account are eligible for the following front-end sales charge waivers, which may differ from those disclosed elsewhere in this Prospectus or in the SAI.

• Employer-sponsored retirement plans (e.g., 401(k) plans 457 plans, employer-sponsored 403(b) plans, profit sharing and money purchase pension plans and defined benefit plans). For purposes of this provision, employer-sponsored retirement plans do not include SEP IRAs, Simple IRAs or SAR-SEPs.

• Shares purchased through reinvestment of capital gains distributions and dividend reinvestment when purchasing shares of the same Fund (but not any other fund within the same fund family).

• Shares exchanged from Class C shares of the same fund in the month of or following the 7-year anniversary of the purchase date. To the extent that this Prospectus elsewhere provides for a waiver with respect to exchanges of Class C shares or conversion of Class C shares following a shorter holding period, that waiver will apply.

• Employees and registered representatives of Ameriprise Financial or its affiliates and their immediate family members.

• Shares purchased by or through qualified accounts (including IRAs, Coverdell Education Savings Accounts, 401(k)s, 403(b) TSCAs subject to ERISA and defined benefit plans) that are held by a covered family member, defined as an Ameriprise financial advisor and/or the advisor's spouse, advisor's lineal ascendant (mother, father, grandmother, grandfather, great grandmother, great grandfather), advisor's lineal descendant (son, step-son, daughter, step-daughter, grandson, granddaughter, great grandson, great granddaughter) or any spouse of a covered family member who is a lineal descendant.

• Shares purchased from the proceeds of redemptions within the same fund family, provided (1) the repurchase occurs within 90 days following the redemption, (2) the redemption and purchase occur in the same account, and (3) redeemed shares were subject to a front-end or deferred sales load (i.e. Rights of Reinstatement).

**Contingent Deferred Sales Charge ("CDSC") Waivers**

If the shareholder purchases shares that are subject to a CDSC and those shares are redeemed before the CDSC is expired, the shareholder is responsible to pay the CDSC except in the following conditions:

• The death or disability of the shareholder.

• Systematic withdrawals with up to 10% per year of the account value.

• Return of excess contributions from an Individual Retirement Account (IRA).

• Shares sold as part of a required minimum distribution for IRA and retirement accounts if the redemption is taken in or after the year the shareholder reaches qualified age based on applicable IRS regulations.

• Shares sold to pay Edward Jones fees or costs in such cases where the transaction is initiated by Edward Jones.

• Shares exchanged in an Edward Jones fee-based program.

• Shares acquired through NAV reinstatement.

• Shares redeemed at the discretion of Edward Jones for Minimums Balances, as described below.

**Edward D. Jones & Co., L.P. ("Edward Jones")**

The following information supersedes prior information with respect to transactions and positions held in fund shares through an Edward Jones system. Clients of Edward Jones (also referred to as "shareholders") purchasing fund shares on the Edward Jones commission and fee-based platforms are eligible only for the following sales charge discounts (also referred to as "breakpoints") and waivers, which can differ from discounts and waivers described elsewhere in the mutual fund prospectus or statement of additional information or through another broker-dealer. In all instances, it is the shareholder's responsibility to inform Edward Jones at the time of purchase of any relationship, holdings of Fund shares, or other facts qualifying the purchaser for discounts or waivers. Edward Jones can ask for documentation of such circumstance. Shareholders should contact Edward Jones if they have questions regarding their eligibility for these discounts and waivers.

**Breakpoints**

• Breakpoint pricing, otherwise known as volume pricing, at dollar thresholds as described in the prospectus.

**Letter of Intent ("LOI")**

• Through a LOI, shareholders can receive the sales charge and breakpoint discounts for purchases shareholders intend to make over a 13-month period from the date Edward Jones receives the LOI. The LOI is determined by calculating the higher of cost or market value of qualifying holdings at LOI initiation in combination with the value that the shareholder intends to buy over a

**53**

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Morgan Stanley Prospectus \| **Appendix**

Appendix A (Con't)

13-month period to calculate the front-end sales charge and any breakpoint discounts. Each purchase the shareholder makes during that 13-month period will receive the sales charge and breakpoint discount that applies to the total amount. The inclusion of eligible fund family assets in the LOI calculation is dependent on the shareholder notifying Edward Jones of such assets at the time of calculation. Purchases made before the LOI is received by Edward Jones are not adjusted under the LOI and will not reduce the sales charge previously paid. Sales charges will be adjusted if LOI is not met.<br>

• If the employer maintaining a SEP IRA plan and/or SIMPLE IRA plan has elected to establish or change ROA for the IRA accounts associated with the plan to a plan-level grouping, LOIs will also be at the plan-level and may only be established by the employer.

**Other Important Information Regarding Transactions Through Edward Jones**

**Minimum Purchase Amounts**

• Initial purchase minimum: $250

• Subsequent purchase minimum: none

**Minimum Balances**

• Edward Jones has the right to redeem at its discretion fund holdings with a balance of $250 or less. The following are examples of accounts that are not included in this policy:

○ A fee-based account held on an Edward Jones platform

○ A 529 account held on an Edward Jones platform

○ An account with an active systematic investment plan or LOI

**Exchanging Share Classes**

• At any time it deems necessary, Edward Jones has the authority to exchange at NAV a shareholder's holdings in a fund to Class A shares of the same fund.

**Rights of Accumulation ("ROA")**

• The applicable sales charge on a purchase of Class A shares is determined by taking into account all share classes (except certain money market funds and any assets held in group retirement plans) of Fund shares held by the shareholder or in an account grouped by Edward Jones with other accounts for the purpose of providing certain pricing considerations ("pricing groups"). If grouping assets as a shareholder, this includes all share classes held on the Edward Jones platform and/or held on another platform. The inclusion of eligible fund family assets in the ROA calculation is dependent on the shareholder notifying Edward Jones of such assets at the time of calculation. Money market funds are included only if such shares were sold with a sales charge at the time of purchase or acquired in exchange for shares purchased with a sales charge.

• The employer maintaining a SEP IRA plan and/or SIMPLE IRA plan may elect to establish or change ROA for the IRA accounts associated with the plan to a plan-level grouping as opposed to including all share classes at a shareholder or pricing group level.

• ROA is determined by calculating the higher of cost minus redemptions or market value (current shares x NAV).

**Sales Charge Waivers**

Sales charges are waived for the following shareholders and in the following situations:

• Associates of Edward Jones and its affiliates and their family members who are in the same pricing group (as determined by Edward Jones under its policies and procedures) as the associate. This waiver will continue for the remainder of the associate's life if the associate retires from Edward Jones in good-standing and remains in good standing pursuant to Edward Jones' policies and procedures.

• Shares purchased in an Edward Jones fee-based program.

• Shares purchased through reinvestment of capital gains distributions and dividend reinvestment.

• Shares purchased from the proceeds of redeemed shares of the same fund family so long as the following conditions are met: 1) the proceeds are from the sale of shares within 60 days of the purchase, and 2) the sale and purchase are made in the same share class and the same account or the purchase is made in an individual retirement account with proceeds from liquidations in a nonretirement account.

**54**

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Morgan Stanley Prospectus \| **Appendix**

Appendix A (Con't)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

• Shares exchanged into Class A shares from another share class so long as the exchange is into the same fund and was initiated at the discretion of Edward Jones. Edward Jones is responsible for any remaining CDSC due to the fund company, if applicable. Any future purchases are subject to the applicable sales charge as disclosed in the prospectus.

• Exchanges from Class C shares to Class A shares of the same fund, generally, in the 84th month following the anniversary of the purchase date or earlier at the discretion of Edward Jones.

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Where to Find Additional Information

Additional information about the Fund's investments is available in the Fund's Shareholder Reports. In the Fund's Annual Report, you will find a discussion of the market conditions and investment strategies that significantly affected the Fund's performance during its last fiscal year.

The Fund's SAI dated February 28, 2023 (as may be supplemented from time to time) also provides additional information about the Fund. The SAI is incorporated herein by reference (legally is part of this Prospectus). For a free copy of the Fund's Shareholder Reports or SAI, to request other information about the Fund or to make shareholder inquiries, please call toll-free 1-800-869-6397. Free copies of these documents are also available from our Internet site at: **www.morganstanley.com/im**.

You also may obtain information about the Fund by calling your Financial Intermediary or by visiting our Internet site.

Shareholder Reports and other information about the Fund are available on the EDGAR Database on the SEC's Internet site at: http://www.sec.gov, and copies of this information may be obtained, after paying a duplicating fee, by electronic request at the following E-mail address: publicinfo@sec.gov.

Morgan Stanley Distribution, Inc., member FINRA.

(THE FUND'S 1940 ACT FILE NO. IS 811-4917)© 2023 Morgan Stanley.

FDLPRO 2/23

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![image](sa15662img001.jpg)

**MORTGAGE SECURITIES TRUST**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Share Class and Ticker Symbol** | **Share Class and Ticker Symbol** | **Share Class and Ticker Symbol** | **Share Class and Ticker Symbol** | **Share Class and Ticker Symbol** |
|  | **A** | **L** | **I** | **C** | **R6** |
| **Mortgage Securities Trust** | MTGAX | MTGCX | MTGDX | MSMTX | MORGX |

---

**Statement of Additional Information**

February 28, 2023

This Statement of Additional Information ("SAI") is not a prospectus. The Prospectus (dated February 28, 2023) for Morgan Stanley Mortgage Securities Trust may be obtained without charge from the Fund at its address or telephone number listed below.

[The Fund's audited financial statements for the fiscal year ended October 31, 2022, including notes thereto, and the report of the Fund's independent registered public accounting firm, are herein incorporated by reference to the Fund's Annual Report to Shareholders. A copy of the Fund's Annual Report to Shareholders must accompany the delivery of this SAI.](https://www.sec.gov/Archives/edgar/data/806564/000110465923001276/tm2229600d5_ncsr.htm)

Morgan Stanley

Mortgage Securities Trust

522 Fifth Avenue

New York, NY 10036

1-800-869-6397

------

**Table of Contents**

---

| | |
|:---|:---|
| [**Glossary of Selected Defined Terms**](#ref_chapter_2_15662)  | 1 |
| [**Fund History**](#ref_chapter_3_15662)  | 2 |
| [**Description of the Fund and its Investments and Risks**](#ref_chapter_4_15662)  | 2 |
| [**Classification**](#ref_chapter_4-sect1_1_15662)  | 2 |
| [**Investment Strategies and Risks**](#ref_chapter_4-sect1_2_15662)  | 2 |
| [**Fund Policies/Investment Restrictions**](#ref_chapter_4-sect1_3_15662)  | 27 |
| [**Disclosure of Portfolio Holdings**](#ref_chapter_4-sect1_4_15662)  | 28 |
| [**Management of the Fund**](#ref_chapter_5_15662)  | 30 |
| [**Board of Trustees**](#ref_chapter_5-sect1_1_15662)  | 30 |
| [**Management Information**](#ref_chapter_5-sect1_2_15662)  | 31 |
| [**Compensation**](#ref_chapter_5-sect1_3_15662)  | 43 |
| [**Control Persons and Principal Holders of Securities**](#ref_chapter_6_15662)  | 44 |
| [**Investment Advisory and Other Services**](#ref_chapter_7_15662)  | 46 |
| [**Adviser and Administrator**](#ref_chapter_7-sect1_1_15662)  | 46 |
| [**Principal Underwriter**](#ref_chapter_7-sect1_2_15662)  | 47 |
| [**Services Provided by the Adviser and Administrator**](#ref_chapter_7-sect1_3_15662)  | 47 |
| [**Dealer Reallowances**](#ref_chapter_7-sect1_4_15662)  | 48 |
| [**Rule 12b-1 Plan**](#ref_chapter_7-sect1_5_15662)  | 48 |
| [**Other Service Providers**](#ref_chapter_7-sect1_6_15662)  | 50 |
| [**Fund Management**](#ref_chapter_7-sect1_7_15662)  | 51 |
| [**Codes of Ethics**](#ref_chapter_7-sect1_8_15662)  | 52 |
| [**Proxy Voting Policy and Proxy Voting Record**](#ref_chapter_7-sect1_9_15662)  | 52 |
| [**Revenue Sharing**](#ref_chapter_7-sect1_10_15662)  | 52 |
| [**Brokerage Allocation and Other Practices**](#ref_chapter_8_15662)  | 54 |
| [**Brokerage Transactions**](#ref_chapter_8-sect1_1_15662)  | 54 |
| [**Commissions**](#ref_chapter_8-sect1_2_15662)  | 54 |
| [**Brokerage Selection**](#ref_chapter_8-sect1_3_15662)  | 54 |
| [**Regular Broker-Dealers**](#ref_chapter_8-sect1_4_15662)  | 56 |
| [**Capital Stock and Other Securities**](#ref_chapter_9_15662)  | 56 |
| [**Purchase/Redemption and Pricing of Shares**](#ref_chapter_10_15662)  | 57 |
| [**Purchase/Redemption of Shares**](#ref_chapter_10-sect1_1_15662)  | 57 |
| [**Offering Price**](#ref_chapter_10-sect1_2_15662)  | 58 |
| [**Taxes**](#ref_chapter_11_15662)  | 59 |
| [**Underwriters**](#ref_chapter_12_15662)  | 62 |
| [**Performance Data**](#ref_chapter_13_15662)  | 62 |
| [**Potential Conflicts of Interest**](#ref_chapter_14_15662)  | 62 |
| [**Financial Statements**](#ref_chapter_15_15662)  | 68 |
| [**Fund Counsel**](#ref_chapter_16_15662)  | 68 |
| [**Appendix A -- Morgan Stanley Investment Management Proxy Voting Policy and** <br>**Procedures**](#ref_chapter_17_15662)  | A-1 |
| [**Appendix B -- Description of Ratings**](#ref_chapter_18_15662)  | B-1 |

---

------

**Glossary of Selected Defined Terms**

The terms defined in this glossary are frequently used in this SAI (other terms used occasionally are defined in the text of the document).

*"Administrator"* — Morgan Stanley Investment Management Inc., a wholly-owned fund services subsidiary of Morgan Stanley.

*"Adviser"* — Morgan Stanley Investment Management Inc., a wholly-owned investment adviser subsidiary of Morgan Stanley.

*"Co-Transfer Agent"* -- Eaton Vance Management a wholly-owned subsidiary of Morgan Stanley.

*"Custodian"* — State Street Bank and Trust Company.

*"Distributor"* — Morgan Stanley Distribution, Inc., a wholly-owned broker-dealer subsidiary of Morgan Stanley.

*"Financial Intermediaries"* — Authorized third parties, such as broker-dealers or other financial intermediaries that have entered into a selling agreement with the Distributor.

*"Fund"* — Morgan Stanley Mortgage Securities Trust, a registered open-end investment company.

*"Independent Trustees"* —Trustees who are not "interested persons" (as defined by the Investment Company Act of 1940, as amended ("1940 Act")) of the Fund.

*"Morgan Stanley Funds"* — Registered investment companies for which the Adviser serves as the investment adviser and that hold themselves out to investors as related companies for investment and investor services.

*"Transfer Agent"* — SS&C Global Investor and Distribution Solutions, Inc.

*"Trustees"* — The Board of Trustees of the Fund.

**1**

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**FUND HISTORY**

The Fund was organized as a Massachusetts business trust, under a Declaration of Trust, on November 20, 1986, with the name Dean Witter Government Securities Plus. Effective August 17, 1992, the Fund's name was changed by the Trustees to Dean Witter Federal Securities Trust. Effective June 22, 1998, the Fund's name was changed to Morgan Stanley Dean Witter Federal Securities Trust. Effective June 18, 2001, the Fund's name was changed to Morgan Stanley Federal Securities Trust. Effective June 22, 2005, the Fund's name was changed to Morgan Stanley Mortgage Securities Trust.

**DESCRIPTION OF THE FUND AND ITS INVESTMENTS AND RISKS**

**Classification**

The Fund is an open-end, diversified management investment company whose investment objective is to seek a high level of current income.

**Investment Strategies and Risks**

The following discussion of the Fund's investment strategies and risks should be read with the sections of the Fund's Prospectus titled "Principal Investment Strategies," "Principal Risks" and "Additional Information About the Fund's Investment Objective, Strategies and Risks."

**Municipals.** Municipal securities include debt obligations of states, territories or possessions of the United States and the District of Columbia and their political subdivisions, agencies and instrumentalities, the income on which is exempt from federal income tax at the time of issuance, in the opinion of bond counsel or other counsel to the issuers of such securities. Municipals include both municipal bonds (those securities with maturities of five years or more) and municipal notes (those with maturities of less than five years). Municipal bonds are issued for a wide variety of reasons: to construct public facilities, such as airports, highways, bridges, schools, hospitals, mass transportation, streets, water and sewer works; to obtain funds for operating expenses; to refund outstanding municipal obligations; and to loan funds to various public institutions and facilities. Certain industrial development bonds are also considered municipal bonds if their interest is exempt from federal income tax. Industrial development bonds are issued by, or on behalf of, public authorities to obtain funds for various privately-operated manufacturing facilities, housing, sports arenas, convention centers, airports, mass transportation systems and water, gas or sewage works. Industrial development bonds are ordinarily dependent on the credit quality of a private user, not the public issuer. Private activity bonds are another type of municipal security.

The two principal classifications of municipal bonds are "general obligation" and "revenue" or "special tax" bonds. General obligation bonds are secured by the issuer's pledge of its full faith, credit and taxing power for the payment of principal and interest. Thus, these bonds may be vulnerable to limits on a government's power or ability to raise revenue or increase taxes and its ability to maintain a fiscally sound budget. The timely payments may also be influenced by any unfunded pension liabilities or other post-employee benefit plan liabilities. These bonds may also depend on legislative appropriation and/or funding or other support from other governmental bodies in order to make payments. Revenue or special tax bonds are payable only from the revenues derived from a particular facility or class of facilities or, in some cases, from the proceeds of a special excise or other tax, but not from general tax revenues. As a result, these bonds historically have been subject to a greater risk of default than general obligation bonds because investors can look only to the revenue generated by the project or other revenue source backing the project, rather than to the general taxing authority of the state or local government issuer of the obligations.

Industrial revenue bonds in most cases are revenue bonds and generally do not have the pledge of the credit of the issuer. The payment of the principal and interest on such industrial revenue bonds is dependent solely on the ability of the user of the facilities financed by the bonds to meet its financial obligations and the pledge, if any, of real and personal property so financed as security for such payment. Short-term municipal obligations issued by states, cities, municipalities or municipal agencies, include tax anticipation notes, revenue anticipation notes, bond anticipation notes, construction loan notes and short-term discount notes.

Private activity bonds may be used by municipalities to finance the development of industrial facilities for use by private enterprise. Principal and interest payments are to be made by the private enterprise benefitting from the development, which means that the holder of the bond is exposed to the risk that the private issuer may default on the bond. The credit and quality of private activity bonds and industrial development bonds are usually related to the credit of the corporate user of the facilities. Payment of interest on and repayment of principal of such bonds is the responsibility of the corporate user (and/or any guarantor).

Municipal notes are issued to meet the short-term funding requirements of local, regional and state governments. Municipal notes include bond anticipation notes, revenue anticipation notes and tax and revenue anticipation notes. These are short-term debt obligations issued by state and local governments to aid cash flows while waiting for taxes or revenue to be collected, at which time the debt is retired. Other types of municipal notes in which the Fund may invest are construction loan notes, short-term discount notes, tax-exempt commercial paper, demand notes and similar instruments.

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Municipal bonds generally include debt obligations issued by states and their political subdivisions, and duly constituted authorities and corporations, to obtain funds to construct, repair or improve various public facilities such as airports, bridges, highways, hospitals, housing, schools, streets and water and sewer works. Municipal bonds may also be issued to refinance outstanding obligations as well as to obtain funds for general operating expenses and for loans to other public institutions and facilities. In addition, municipal bonds may include obligations of municipal housing authorities and single-family mortgage revenue bonds. Weaknesses in federal housing subsidy programs and their administration may result in a decrease of subsidies available for payment of principal and interest on housing authority bonds. Economic developments, including fluctuations in interest rates and increasing construction and operating costs, may also adversely impact revenues of housing authorities. In the case of some housing authorities, inability to obtain additional financing could also reduce revenues available to pay existing obligations. Single-family mortgage revenue bonds are subject to extraordinary mandatory redemption at par in whole or in part from the proceeds derived from prepayments of underlying mortgage loans and also from the unused proceeds of the issue within a stated period which may be within a year from the date of issue.

Note obligations with demand or put options may have a stated maturity in excess of one year, but permit any holder to demand payment of principal plus accrued interest upon a specified number of days' notice. Frequently, such obligations are secured by letters of credit or other credit support arrangements provided by banks. The issuer of such notes normally has a corresponding right, after a given period, to repay at its discretion the outstanding principal of the note plus accrued interest upon a specific number of days' notice to the bondholders. The interest rate on a demand note may be based upon a known lending rate, such as the prime lending rate, and be adjusted when such rate changes, or the interest rate on a demand note may be a market rate that is adjusted at specified intervals. Each note purchased by the Fund will meet the quality criteria set out in the Prospectus for the Fund.

The yields of municipal bonds depend on, among other things, general money market conditions, conditions in the municipal bond market, the size of a particular offering, the maturity of the obligation, and the rating of the issue. The ratings of Moody's Investors Service, Inc. ("Moody's") and S&P Global Ratings Group, a division of S&P Global Inc. ("S&P") represent their opinions of the quality of the municipal bonds rated by them. It should be emphasized that such ratings are general and are not absolute standards of quality. Consequently, municipal bonds with the same maturity, coupon and rating may have different yields, while municipal bonds of the same maturity and coupon, but with different ratings, may have the same yield. It will be the responsibility of the Adviser to appraise independently the fundamental quality of the bonds held by the Fund.

Municipal bonds are sometimes purchased on a "when-issued" or "delayed-delivery" basis, which means the Fund has committed to purchase certain specified securities at an agreed-upon price when they are issued. The period between commitment date and issuance date can be a month or more. It is possible that the securities will never be issued and the commitment canceled.

From time to time proposals have been introduced before Congress to restrict or eliminate the federal income tax exemption for interest on municipal bonds. Similar proposals may be introduced in the future.

Similarly, from time to time proposals have been introduced before state and local legislatures to restrict or eliminate the state and local income tax exemption for interest on municipal bonds. Similar proposals may be introduced in the future.

The Fund may also purchase bonds the income on which is subject to the alternative minimum tax ("AMT bonds"). AMT bonds are tax-exempt private activity bonds issued after August 7, 1986, the proceeds of which are directed, at least in part, to private, for-profit organizations. While the income from AMT bonds is exempt from regular federal income tax, it is a tax preference item in the calculation of the alternative minimum tax. The alternative minimum tax is a special separate tax that applies to some taxpayers who have certain adjustments to income or tax preference items.

An issuer of municipal securities may file for bankruptcy or otherwise seek to reorganize its debts by extending debt maturities, reducing the amount of principal or interest, refinancing the debt or taking other measures, in each case which may significantly affect the rights of creditors and the value of the municipal securities and the value of the Fund's investments in such municipal securities. In addition, changes to bankruptcy laws may adversely impact the Fund's investments in municipal securities, including creditor rights, if the issuer seeks bankruptcy protection.

Build America Bonds are taxable municipal securities on which the issuer receives federal support of the interest paid. Assuming certain specified conditions are satisfied, issuers of Build America Bonds may either (i) receive reimbursement from the U.S. Treasury with respect to a portion of its interest payments on the bonds ("direct pay" Build America Bonds) or (ii) provide tax credits to investors in the bonds ("tax credit" Build America Bonds). Unlike most other municipal securities, interest received on Build America Bonds is subject to federal and state income tax. Issuance of Build America Bonds ceased on December 31, 2010. The number of Build America Bonds available in the market is limited, which may negatively affect the value of the Build America Bonds.

The Fund may hold municipal private placements. These securities are sold through private negotiations, usually to institutions or mutual funds, and generally have resale restrictions. Their yields are usually higher than comparable public securities to compensate the investor for their limited marketability.

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**Lease Obligations.** Included within the revenue bonds category in which the Fund may invest are participations in lease obligations or installment purchase contracts (hereinafter collectively called "lease obligations") of municipalities. State and local governments, agencies or authorities issue lease obligations to acquire equipment and facilities. Lease obligations may have risks not normally associated with general obligation or other revenue bonds. Leases, and installment purchase or conditional sale contracts (which may provide for title to the leased asset to pass eventually to the issuer), have developed as a means for governmental issuers to acquire property and equipment without the necessity of complying with the constitutional and statutory requirements generally applicable for the issuance of debt. Certain lease obligations contain "non-appropriation" clauses that provide that the governmental issuer has no obligation to make future payments under the lease or contract unless money is appropriated for such purpose by the appropriate legislative body on an annual or other periodic basis. Consequently, continued lease payments on those lease obligations containing "non-appropriation" clauses are dependent on future legislative actions. If such legislative actions do not occur, the holders of the lease obligation may experience difficulty in exercising their rights, including disposition of the property.

In addition, lease obligations do not have the depth of marketability associated with more conventional municipal obligations, and, as a result, certain of such lease obligations may be considered illiquid securities. The Adviser, pursuant to procedures adopted by the Trustees, will make a determination as to the liquidity of each lease obligation purchased by the Fund. If a lease obligation is determined to be "liquid," the security will not be included within the category "illiquid securities."

**Collateralized Mortgage Obligations.** The Fund may invest in collateralized mortgage obligations ("CMOs"), which are mortgage-backed securities ("MBS") that are collateralized by mortgage loans or mortgage pass-through securities, and multi-class pass-through securities, which are equity interests in a trust composed of mortgage loans or other MBS. Unless the context indicates otherwise, the discussion of CMOs below also applies to multi-class pass-through securities.

CMOs may be issued by governmental or government-related entities or by private entities, such as banks, savings and loan institutions, private mortgage insurance companies, mortgage bankers and other secondary market traders. CMOs are issued in multiple classes, often referred to as "tranches," with each tranche having a specific fixed or floating coupon rate and stated maturity or final distribution date. 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 holders of the CMOs. 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.

The principal and interest on the underlying collateral may be allocated among the several tranches of a CMO in innumerable ways, including "interest only" and "inverse interest only" tranches. In a common CMO structure, the tranches are retired sequentially in the order of their respective stated maturities or final distribution dates (as opposed to the pro-rata return of principal found in traditional pass-through obligations). The fastest-pay tranches would initially receive all principal payments. When those tranches are retired, the next tranches in the sequence 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 and expected average lives and risk characteristics.

The 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) may cause the CMOs to be retired substantially earlier than their stated maturities or final distribution dates and will affect the yield and price of CMOs. In addition, if the collateral securing CMOs or any third-party guarantees are insufficient to make payments, the Fund could sustain a loss. 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 types of mortgage-backed securities. As a result, it may be difficult or impossible to sell the securities at an advantageous time or price.

Privately issued CMOs are arrangements in which the underlying mortgages are held by the issuer, which then issues debt collateralized by the underlying mortgage assets. Such securities may be backed by mortgage insurance, letters of credit, or other credit enhancing features. Although payment of the principal of, and interest on, the underlying collateral securing privately issued CMOs may be guaranteed by the U.S. Government or its agencies and instrumentalities, these CMOs represent obligations solely of the private issuer and are not insured or guaranteed by the U.S. Government, its agencies and instrumentalities or any other person or entity. Privately issued CMOs are subject to prepayment risk due to the possibility that prepayments on the underlying assets will alter the cash flow. Yields on privately issued CMOs have been historically higher than the yields on CMOs backed by mortgages guaranteed by U.S. government agencies and instrumentalities. The risk of loss due to default on privately issued CMOs, however, is historically higher since the U.S. Government has not guaranteed them.

New types of CMO tranches have evolved. These include floating rate CMOs, planned amortization classes, accrual bonds and CMO residuals. These newer structures affect the amount and timing of principal and interest received by each tranche from the underlying collateral. For example, an inverse interest-only class CMO entitles holders to receive no payments of principal and to

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receive interest at a rate that will vary inversely with a specified index or a multiple thereof. Under certain of these newer 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 the Fund invests, the investment may be subject to a greater or lesser risk of prepayment than other types of MBS.

CMOs may include real estate mortgage investment conduits ("REMICs"). REMICs, which were authorized under the Tax Reform Act of 1986, are private entities formed for the purpose of holding a fixed pool of mortgages secured by an interest in real property. A REMIC is a CMO that qualifies for special tax treatment under the Internal Revenue Code of 1986, as amended (the "Code"), and invests in certain mortgages principally secured by interests in real property.

The Fund may invest in, among others, parallel pay CMOs and planned amortization class CMOs ("PAC Bonds"). Parallel pay CMOs are structured to provide payments of principal on each payment date to more than one tranche. These simultaneous payments are taken into account in calculating the stated maturity date or final distribution date of each tranche which, as with other CMO structures, must be retired by its stated maturity date or final distribution date but may be retired earlier. PAC Bonds are a form of parallel pay CMO, with the required principal payment on such securities having the highest priority after interest has been paid to all classes. PAC Bonds generally require payments of a specified amount of principal on each payment date.

**Stripped Mortgage-Backed Securities.** The Fund may invest in stripped mortgage-backed securities ("SMBS"). An SMBS is a derivative multi-class mortgage-backed security. SMBS usually are structured with two classes that receive different proportions of the interest and principal distribution on a pool of mortgage assets. 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 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 such security's yield to maturity. If the underlying mortgage assets experience greater than anticipated prepayments of principal, the Fund may fail to fully recoup its initial investment in these securities. Conversely, if the underlying mortgage assets experience less than anticipated prepayments of principal, the yield of POs could be materially adversely affected. The market values of IOs and POs are subject to greater risk of fluctuation in response to changes in market rates of interest than many other types of mortgage-backed securities. To the extent the Fund invests in IOs and POs, it may increase the risk of fluctuations in the net asset value per share ("NAV") of the Fund.

*Credit Enhancement.* Mortgage-related securities are often backed by a pool of assets representing the obligations of a number of parties. To lessen the effect of failure by obligors on underlying assets to make payments, these securities may have various types of credit support. Credit support falls into two primary categories: (i) liquidity protection, and (ii) protection against losses resulting from ultimate default by an obligor on the underlying assets. Liquidity protection generally refers to the provision of advances, typically by the entity administering the pool of assets, to ensure that the pass-through of payments due on the underlying pool occurs in a timely fashion. Protection against losses resulting from ultimate default enhances the likelihood of ultimate payment of the obligations on at least a portion of the assets in the pool. Such protection may be provided through guarantees, insurance policies or letters of credit obtained by the issuer or sponsor from third-parties (referred to herein as "third-party credit support"), through various means of structuring the transaction or through a combination of such approaches.

The ratings of mortgage-related securities for which third-party credit enhancement provides liquidity protection or protection against losses from default are generally dependent upon the continued creditworthiness of the provider of the credit enhancement. The ratings of such securities could decline in the event of deterioration in the creditworthiness of the credit enhancement provider even in cases where the delinquency and loss experience on the underlying pool of assets is better than expected.

Examples of credit support arising out of the structure of the transaction include "senior-subordinated securities" (multiple class securities with one or more classes subordinate to other classes as to the payment of principal and interest thereon, with defaults on the underlying assets being borne first by the holders of the most subordinated class), creation of "reserve funds" (where cash or investments, sometimes funded from a portion of the payments on the underlying assets, are held in reserve against future losses) and "over-collateralization" (where the scheduled payments on, or the principal amount of, the underlying assets exceed those required to make payment of the securities and pay any servicing or other fees). The degree of credit support provided for each security is generally based on historical information with respect to the level of credit risk associated with the underlying assets. Delinquency or loss in excess of that which is anticipated could adversely affect the return on an investment in such a security.

**Inverse Floaters.** Inverse floating rate obligations are obligations which pay interest at rates that vary inversely with changes in market rates of interest. Because the interest rate paid to holders of such obligations is generally determined by subtracting a variable or floating rate from a predetermined amount, the interest rate paid to holders of such obligations will decrease as such variable or floating rate increases and increase as such variable or floating rate decreases.

Like most other fixed-income securities, the value of inverse floaters will decrease as interest rates increase. They are more volatile, however, than most other fixed-income securities because the coupon rate on an inverse floater typically changes at a multiple of the change in the relevant index rate. Thus, any rise in the index rate (as a consequence of an increase in interest rates) causes a correspondingly greater drop in the coupon rate of an inverse floater while a drop in the index rate causes a correspondingly greater

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increase in the coupon of an inverse floater. Some inverse floaters may also increase or decrease in value substantially because of changes in the rate of prepayments.

Inverse floating rate investments tend to underperform the market for fixed-rate bonds in a rising interest rate environment, but tend to outperform the market for fixed-rate bonds when interest rates decline or remain relatively stable. Inverse floating rate investments have varying degrees of liquidity.

**Commercial Mortgage-Backed Securities.** Commercial mortgage-backed securities ("CMBS") are generally multi-class or pass-through securities issued by special purpose entities that represent an undivided interest in a portfolio of mortgage loans backed by commercial properties, including, but not limited to, industrial and warehouse properties, office buildings, retail space and shopping malls, hotels, healthcare facilities, multifamily properties and cooperative apartments. Private lenders, such as banks or insurance companies, originate these loans and then sell the loans directly into a CMBS trust or other entity. The commercial mortgage loans that underlie CMBS are generally not amortizing or not fully amortizing. That is, at their maturity date, repayment of the remaining principal balance or "balloon" is due and is repaid through the attainment of an additional loan or sale of this property. An extension of the final payment on commercial mortgages will increase the average life of the CMBS, generally resulting in a lower yield for discount bonds and a higher yield for premium bonds.

CMBS are subject to credit risk and prepayment risk. Although prepayment risk is present, it is of a lesser degree in the CMBS than in the residential mortgage market; commercial real estate property loans often contain provisions which substantially reduce the likelihood that such securities will be prepaid (e.g., significant prepayment penalties on loans and, in some cases, prohibition on principal payments for several years following origination).

**Asset-Backed Securities.** The Fund may invest in asset-backed securities. Asset-backed securities utilize the securitization techniques used to develop MBS. These techniques are also applied to a broad range of other assets. Various types of assets, primarily automobile and credit card receivables and home equity loans, are being securitized in pass-through structures similar to the mortgage pass-through structures. These types of securities are known as asset-backed securities. The Fund may invest in any type of asset-backed security. Asset-backed securities have risk characteristics similar to MBS. Like MBS, they generally decrease in value as a result of interest rate increases, but may benefit less than other fixed-income securities from declining interest rates, principally because of prepayments. Also, as in the case of MBS, prepayments generally increase during a period of declining interest rates although other factors, such as changes in credit use and payment patterns, may also influence prepayment rates. Asset-backed securities also involve the risk that various federal and state consumer laws and other legal, regulatory and economic factors may result in the collateral backing the securities being insufficient to support payment on the securities.

**Illiquid Investments.** In accordance with Rule 22e-4 (the "Liquidity Rule") under the 1940 Act, the Fund may invest up to 15% of its net assets in "illiquid investments" that are assets. For these purposes, "illiquid investments" are investments that the Fund reasonably expects cannot be sold or disposed of in current market conditions in seven calendar days or less without the sale or disposition significantly changing the market value of the investment. For the Fund, each portfolio investment must be classified at least monthly into one of four liquidity categories (illiquid, as discussed above, as well as highly liquid, moderately liquid and less liquid), which are defined pursuant to the Liquidity Rule and classified in accordance with the Fund's written liquidity risk management program by the program administrator designated by the Fund's Board of Trustees. Such classification is to be made using information obtained after reasonable inquiry and taking into account relevant market, trading and investment-specific considerations. In making such classifications, the Fund determines whether trading varying portions of a position in a particular portfolio investment or asset class, in sizes that the Fund would reasonably anticipate trading, is reasonably expected to significantly affect its liquidity. If so, this determination is taken into account when classifying the liquidity of that investment. The Fund may be assisted in classification determinations by one or more third-party service providers. Assets classified according to this process as "illiquid investments" are those subject to the 15% limit on illiquid investments.

In the event that changes in the portfolio or other external events cause the Fund to exceed this limit, the Fund must take steps to bring its illiquid investments that are assets to or below the applicable limit of its net assets within a reasonable period of time. This requirement would not force the Fund to liquidate any portfolio investment.

The SEC has recently proposed amendments to the Liquidity Rule that, if adopted, would result in changes to the Fund's liquidity classification framework and could potentially increase the percentage of the Fund's investments classified as illiquid. In addition, the Fund's operations and investment strategies may be adversely impacted if the proposed amendments are adopted.

**Loan-Related Investments.** Loan-related investments may include, without limitation, bank loans, direct lending and loan participations and assignments. In addition to risks generally associated with debt investments, loan-related investments are subject to other risks. Loans in which the Fund may invest may not be rated by a rating agency, will not be registered with the U.S. Securities and Exchange Commission ("SEC") or any state securities commission and will not be listed on any national securities exchange. Investors in loans, such as the Fund, may not be entitled to rely on the anti-fraud protections of the federal securities laws, although they may be entitled to certain contractual remedies. The amount of public information available with respect to loans will generally

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be less extensive than that available for registered or exchange-listed securities. In evaluating the creditworthiness of borrowers, the Adviser will consider, and may rely in part on, analyses performed by others.

The market for loan obligations may be subject to irregular trading activity, wide bid/ask spreads and extended trade settlement periods. Because transactions in many loans are subject to extended trade settlement periods, the Fund may not receive the proceeds from the sale of a loan for a period after the sale. As a result, sale proceeds related to the sale of loans may not be available to make additional investments or to meet the Fund's redemption obligations for a period after the sale of the loans, and, as a result, the Fund may have to sell other investments or engage in borrowing transactions, such as borrowing from its credit facility, if necessary to raise cash to meet its obligations. In addition, the Fund may not be able to readily dispose of its loans at prices that approximate those at which the Fund could sell such loans if they were more widely-traded and, as a result of such illiquidity, the Fund may have to hold additional cash or sell other investments or engage in borrowing transactions, such as borrowing from its credit facility, if necessary to raise cash to meet its obligations, including redemption obligations. To the extent a readily available market ceases to exist for a particular investment, such investment would be treated as illiquid for purposes of the Fund's limitations on illiquid investments.

Loans are subject to the risk of non-payment of scheduled interest or principal. Such non-payment would result in a reduction of income to the Fund, a reduction in the value of the investment and a potential decrease in the Fund's NAV. There can be no assurance that the liquidation of any collateral securing a loan would satisfy a borrower's obligation in the event of non-payment of scheduled interest or principal payments, or that such collateral could be readily liquidated. In the event of bankruptcy of a borrower, the Fund could experience delays or limitations with respect to its ability to realize the benefits of the collateral securing a loan. The collateral securing a loan may lose all or substantially all of its value in the event of the bankruptcy of a borrower. Some loans are subject to the risk that a court, pursuant to fraudulent conveyance or other similar laws, could subordinate such loans to presently existing or future indebtedness of the borrower or take other action detrimental to the holders of loans including, in certain circumstances, invalidating such loans or causing interest previously paid to be refunded to the borrower. If interest were required to be refunded, it could negatively affect the Fund's performance.

*Direct Lending*. When the Fund acts as a direct lender, it may participate in structuring the loan. Under these circumstances, it will have a direct contractual relationship with the borrower, may enforce compliance by the borrower with the terms of the loan agreement and may have rights with respect to any funds acquired by other lenders through set-off. Lenders also have full voting and consent rights under the applicable loan agreement. Action subject to lender vote or consent generally requires the vote or consent of the holders of some specified percentage of the outstanding principal amount of the loan. Certain decisions, such as reducing the amount of interest on or principal of a loan, releasing collateral, changing the maturity of a loan or a change in control of the borrower, frequently require the unanimous vote or consent of all lenders affected.

*Loan Participations and Assignments.* Loan participations are interests in loans or other direct debt instruments relating to amounts owed by a corporate, governmental or other borrower to another party. These loans may represent amounts owed to lenders or lending syndicates, to suppliers of goods or services (trade claims or other receivables), or to other parties ("Lenders") and may be fixed-rate or floating rate. These loans also may be arranged through private negotiations between an issuer of sovereign debt obligations and Lenders.

The Fund's investments in loans may be in the form of a participation in loans ("Participations") and assignments of all or a portion of loans ("Assignments") from third parties. In the case of a Participation, the Fund will have the right to receive payments of principal, interest and any fees to which it is entitled only from the Lender selling the Participation and only upon receipt by the Lender of the payments from the borrower. In the event of an insolvency of the Lender selling a Participation, the Fund may be treated as a general creditor of the Lender and may not benefit from any set-off between the Lender and the borrower. Certain Participations may be structured in a manner designed to avoid purchasers of Participations being subject to the credit risk of the Lender with respect to the Participation. Even under such a structure, in the event of a Lender's insolvency, the Lender's servicing of the Participation may be delayed and the assignability of the Participation may be impaired. The Fund will acquire Participations only if the Lender interpositioned between the Fund and the borrower is determined by the Adviser to be creditworthy.

When the Fund purchases Assignments from Lenders it will acquire direct rights against the borrower on the loan. However, because Assignments are arranged through private negotiations between potential assignees and potential assignors, the rights and obligations acquired by the Fund as the purchaser of an Assignment may differ from, and be more limited than, those held by the assigning Lender. Because there is no liquid market for Participations and Assignments, it is likely that such securities could be sold only to a limited number of institutional investors. The lack of a liquid secondary market may have an adverse impact on the value of such securities and the Fund's ability to dispose of particular Assignments or Participations when necessary to meet the Fund's liquidity needs or in response to a specific economic event, such as a deterioration in the creditworthiness of the borrower. The lack of a liquid secondary market for Participations and Assignments also may make it more difficult for the Fund to assign a value to these securities for purposes of valuing the Fund's securities and calculating its NAV.

Participations and Assignments involve a risk of loss in case of default or insolvency of the borrower. In addition, they may offer less legal protection to the Fund in the event of fraud or misrepresentation and may involve a risk of insolvency of the Lender. Certain

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Participations and Assignments may also include standby financing commitments that obligate the investing Fund to supply additional cash to the borrower on demand. Participations involving emerging market country issuers may relate to loans as to which there has been or currently exists an event of default or other failure to make payment when due, and may represent amounts owed to Lenders that are themselves subject to political and economic risks, including the risk of currency devaluation, expropriation, or failure. Such Participations and Assignments present additional risk of default or loss.

Bank loans generally are negotiated between a borrower and several financial institutional lenders represented by one or more lenders acting as agent of all the lenders. The agent is responsible for negotiating the loan agreement that establishes the terms and conditions of the loan and the rights of the borrower and the lenders, monitoring any collateral, and collecting principal and interest on the loan. By investing in a loan, the Fund becomes a member of a syndicate of lenders. Investments in bank loans entail those risks described above, such as liquidity risk and risk of default.

**Derivatives.** The Fund may, but is not required to, use various derivatives and other similar instruments as described below. Derivatives may be used for a variety of purposes including hedging, risk management, portfolio management or to earn income. Any or all of the investment techniques described herein may be used at any time and there is no particular strategy that dictates the use of one technique rather than another, as the use of any derivative by the Fund is a function of numerous variables, including market conditions. The Fund complies with applicable regulatory requirements when using derivatives. Although the Adviser seeks to use derivatives to further the Fund's investment objective, no assurance can be given that the use of derivatives will achieve this result.

*General Risks of Derivatives.* Derivatives utilized by the Fund may involve the purchase and sale of derivative instruments. A derivative is a financial instrument the value of which depends upon (or derives from) the value of another asset, security, interest rate, index or financial instrument. Derivatives may relate to a wide variety of underlying instruments, including equity and debt securities, indices, interest rates, currencies and other assets. Certain derivative instruments that the Fund may use and the risks of those instruments are described in further detail below. The Fund may in the future also utilize derivatives techniques, instruments and strategies that may be newly developed or permitted as a result of regulatory changes, consistent with the Fund's investment objective and policies. Such newly developed techniques, instruments and strategies may involve risks different than or in addition to those described herein. No assurance can be given that any derivatives strategy employed by the Fund will be successful.

The risks associated with the use of derivatives are different from, and possibly greater than, the risks associated with investing directly in the instruments underlying such derivatives. Derivatives are highly specialized instruments that require investment techniques and risk analyses different from other portfolio investments. The use of derivative instruments requires an understanding not only of the underlying instrument but also of the derivative itself. Certain risk factors generally applicable to derivative transactions are described below.

■ Derivatives are subject to the risk that the market value of the derivative itself or the market value of underlying instruments will change in a way adverse to the Fund's interests. The Fund bears the risk that the Adviser may incorrectly forecast future market trends and other financial or economic factors or the value of the underlying security, index, interest rate or currency when establishing a derivatives position for the Fund.

■ Derivatives may be subject to pricing risk, which exists when a derivative becomes extraordinarily expensive (or inexpensive) relative to historical prices or corresponding instruments. Under such market conditions, it may not be economically feasible to initiate a transaction or liquidate a position at an advantageous time or price.

■ Many derivatives are complex and often valued subjectively. Improper valuations can result in increased payment requirements to counterparties or a loss of value to the Fund. Many derivatives may also involve operational and legal risks.

■ Using derivatives as a hedge against a portfolio investment subjects the Fund to the risk that the derivative will have imperfect correlation with the portfolio investment, which could result in the Fund incurring substantial losses. This correlation risk may be greater in the case of derivatives based on an index or other basket of securities, as the portfolio securities being hedged may not duplicate the components of the underlying index or the basket may not be of exactly the same type of obligation as those underlying the derivative. The use of derivatives for "cross hedging" purposes (using a derivative based on one instrument as a hedge on a different instrument) may also involve greater correlation risks.

■ While using derivatives for hedging purposes can reduce the Fund's risk of loss, it may also limit the Fund's opportunity for gains or result in losses by offsetting or limiting the Fund's ability to participate in favorable price movements in portfolio investments.

■ Derivatives transactions for non-hedging purposes involve greater risks and may result in losses which would not be offset by increases in the value of portfolio securities or declines in the cost of securities to be acquired. In the event that the Fund enters into a derivatives transaction as an alternative to purchasing or selling the underlying instrument or in order to obtain desired exposure to an index or market, the Fund will be exposed to the same risks as are incurred in purchasing or selling the underlying instruments directly as well as the additional risks associated with derivatives transactions.

■ The use of certain derivatives transactions, including over-the-counter ("OTC") derivatives, involves the risk of loss resulting from the insolvency or bankruptcy of the counterparty to the contract or the failure by the counterparty to make required payments or otherwise comply with the terms of the contract. In the event of default by a counterparty, the Fund may have contractual remedies pursuant to the agreements related to the transaction.

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■ Liquidity risk exists when a particular derivative is difficult to purchase or sell. If a derivative transaction is particularly large or if the relevant market is illiquid, the Fund may be unable to initiate a transaction or liquidate a position at an advantageous time or price.

■ While some derivatives are cleared through a regulated, central clearinghouse, many derivatives transactions are not entered into or traded on exchanges or in markets regulated by the U.S. Commodity Futures Trading Commission ("CFTC") or the SEC. Instead, in some cases, certain types of bilateral OTC derivatives are entered into directly by the Fund and a counterparty and may be traded only through financial institutions acting as market makers. OTC derivatives transactions can only be entered into with a willing counterparty that is approved by the Adviser in accordance with guidelines established by the Board. Where no such counterparty is available, the Fund will be unable to enter into a desired OTC transaction. There also may be greater risk that no liquid secondary market in the trading of OTC derivatives will exist, in which case the Fund may be required to hold such instruments until exercise, expiration or maturity. Many of the protections afforded to participants in the cleared derivatives markets are not available to participants in bilateral OTC derivatives transactions. Bilateral OTC derivatives transactions are not subject to the guarantee of a clearinghouse and, as a result, the Fund would bear greater risk of default by the counterparties to such transactions.

■ The Fund may be required to make physical delivery of portfolio securities underlying a derivative in order to close out or to meet margin and payment requirements and a derivatives position or to sell portfolio securities at a time or price at which it may be disadvantageous to do so in order to obtain cash to close out or to maintain a derivatives position.

■ As a result of the structure of certain derivatives, adverse changes in, among other things, interest rates, volatility or the value of the underlying instrument can result in losses substantially greater than the amount invested in the derivative itself. Certain derivatives have the potential for unlimited loss, regardless of the size of the initial investment.

■ Certain derivatives may be classified as illiquid and therefore subject to the Fund's limitation on investments in illiquid investments .

■ Derivatives transactions conducted outside the United States may not be conducted in the same manner as those entered into on U.S. exchanges, and may be subject to different margin, exercise, settlement or expiration procedures. Brokerage commissions, clearing costs and other transaction costs may be higher on foreign exchanges. Many of the risks of OTC derivatives transactions are also applicable to derivatives transactions conducted outside the United States. Derivatives transactions conducted outside the United States are subject to the risk of governmental action affecting the trading in, or the prices of, foreign securities, currencies and other instruments. The value of such positions could be adversely affected by foreign political and economic factors; lesser availability of data on which to make trading decisions; delays on the Fund's ability to act upon economic events occurring in foreign markets; and less liquidity than U.S. markets.

■ Currency derivatives are subject to additional risks. Currency derivatives transactions may be negatively affected by government exchange controls, blockages and manipulation. Currency exchange rates may be influenced by factors extrinsic to a country's economy. There is no systematic reporting of last sale information with respect to underlying foreign currencies. As a result, the available information on which trading in currency derivatives will be based may not be as complete as comparable data for other transactions. Events could occur in the foreign currency market which will not be reflected in currency derivatives until the following day, making it more difficult for the Fund to respond to such events in a timely manner.

*Combined Transactions.* Combined transactions involve entering into multiple derivatives transactions (such as multiple options transactions, including purchasing and writing options in combination with each other; multiple futures transactions; and combinations of options, futures, forward and swap transactions) instead of a single derivatives transaction in order to customize the risk and return characteristics of the overall position. Combined transactions typically contain elements of risk that are present in each of the component transactions. The Fund may enter into a combined transaction instead of a single derivatives transaction when, in the opinion of the Adviser, it is in the best interest of the Fund to do so. Because combined transactions involve multiple transactions, they may result in higher transaction costs and may be more difficult to close out.

*Regulatory Matters.* Regulatory developments affecting the exchange-traded and OTC derivatives markets may impair the Fund's ability to manage or hedge its investment portfolio through the use of derivatives. In particular, in October 2020, the SEC adopted a final rule related to the use of derivatives, short sales, reverse repurchase agreements and certain other transactions by registered investment companies that rescinded and withdrew the guidance of the SEC and its staff regarding asset segregation and cover transactions previously applicable to the Fund's derivatives and other transactions. These requirements may limit the ability of the Fund to use derivatives and reverse repurchase agreements and similar financing transactions as part of its investment strategies. The final rule requires the Fund to trade derivatives and other transactions that create future payment or delivery obligations subject to a value-at-risk ("VaR") leverage limit, certain derivatives risk management program and reporting requirements. Generally, these requirements apply unless the Fund qualifies as a "limited derivatives user." Under the final rule, when the Fund trades reverse repurchase agreements or similar financing transactions, including certain tender option bonds, it needs to aggregate the amount of indebtedness associated with the reverse repurchase agreements or similar financing transactions with the aggregate amount of any other senior securities representing indebtedness when calculating the Fund's asset coverage ratio or treat all such transactions as derivatives transactions. Reverse repurchase agreements or similar financing transactions aggregated with other indebtedness do not need to be included in the calculation of whether the Fund is a limited derivatives user, but for funds subject to the VaR testing, reverse repurchase agreements and similar financing transactions must be included for purposes of such testing whether treated as

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derivatives transactions or not. The SEC also provided guidance in connection with the rule regarding use of securities lending collateral that may limit the Fund's securities lending activities. In addition, under the rule, the Fund is permitted to invest in a security on a when-issued or forward-settling basis, or with a non-standard settlement cycle, and the transaction will be deemed not to involve a senior security under the 1940 Act, provided that (i) the Fund intends to physically settle the transaction and (ii) the transaction will settle within 35 days of its trade date (the "Delayed-Settlement Securities Provision"). The Fund may otherwise engage in such transactions that do not meet the conditions of the Delayed-Settlement Securities Provision so long as the Fund treats any such transaction as a "derivatives transaction" for purposes of compliance with the rule. Furthermore, under the rule, the Fund will be permitted to enter into an unfunded commitment agreement, and such unfunded commitment agreement will not be subject to the asset coverage requirements under the 1940 Act, if the Fund reasonably believes, at the time it enters into such agreement, that it will have sufficient cash and cash equivalents to meet its obligations with respect to all such agreements as they come due. These requirements may increase the cost of the Fund's investments and cost of doing business, which could adversely affect investors. The Dodd-Frank Act and the rules promulgated thereunder may limit the ability of the Fund to enter into one or more exchange-traded or OTC derivatives transactions.

The Fund's use of derivatives may also be limited by the requirements of the Code for qualification as a RIC for U.S. federal income tax purposes.

The Adviser, with respect to the Fund, has filed a notice of eligibility with the National Futures Association ("NFA") claiming an exclusion from the definition of the term "commodity pool operator" ("CPO") pursuant to CFTC Regulation 4.5, as promulgated under the Commodity Exchange Act, as amended ("CEA"), with respect to the Fund's operations. Therefore, neither the Fund nor the Adviser (with respect to the Fund) is subject to registration or regulation as a commodity pool or CPO under the CEA. If the Adviser or the Fund becomes subject to these requirements, as well as related NFA rules, the Fund may incur additional compliance and other expenses.

With respect to investments in swap transactions, commodity futures, commodity options or certain other commodity interests used for purposes other than bona fide hedging purposes, as such term is defined in CFTC regulations, an investment company must meet one of the following tests under the CFTC regulations in order for its investment adviser to claim an exemption from being considered a CPO. First, the aggregate initial margin and premiums required to establish an investment company's positions in such investments may not exceed five percent (5%) of the liquidation value of the investment company's portfolio (after accounting for unrealized profits and unrealized losses on any such investments). Alternatively, the aggregate net notional value of such instruments, determined at the time of the most recent position established, may not exceed one hundred percent (100%) of the liquidation value of the investment company's portfolio (after accounting for unrealized profits and unrealized losses on any such positions). In addition to meeting one of the foregoing trading limitations, the investment company may not market itself as a commodity pool or otherwise as a vehicle for trading in the commodity futures, commodity options or swaps and derivatives markets.

Regulations recently adopted by federal banking regulators under the Dodd-Frank Act require that certain qualified financial contracts ("QFCs") with counterparties that are part of U.S. or foreign global systemically important banking organizations be amended to include contractual restrictions on close-out and cross-default rights. QFCs include, but are not limited to, securities contracts, commodities contracts, forward contracts, repurchase agreements, securities lending agreements and swaps agreements, as well as related master agreements, security agreements, credit enhancements, and reimbursement obligations. If a covered counterparty of the Fund or certain of the covered counterparty's affiliates were to become subject to certain insolvency proceedings, the Fund may be temporarily unable to exercise certain default rights, and the QFC may be transferred to another entity. These requirements may impact the Fund's credit and counterparty risks.

**Options.** An option is a contract that gives the holder of the option the right, but not the obligation, to buy from (in the case of a call option) or sell to (in the case of a put option) the buyer or seller, as applicable, of the option (the "option writer") the underlying instrument at a specified fixed price (the "exercise price") on or prior to a specified date for American options or only at expiration for European options (the "expiration date"). The buyer of the option pays to the option writer the option premium, which is the purchase price of the option.

Exchange-traded options are issued by a regulated intermediary such as the Options Clearing Corporation ("OCC"), which guarantees the performance of the obligations of the parties to such options. OTC options are purchased from or sold to counterparties through direct bilateral agreements between the Fund and its counterparties. Certain options, such as options on individual securities, are settled through physical delivery of the underlying security, whereas other options, such as index options, may be settled in cash in an amount based on the difference between the value of the underlying instrument and the strike price, which is then multiplied by a specified multiplier.

*Writing Options.* The Fund may write call and put options. As the writer of a call option, the Fund receives the premium from the purchaser of the option and has the obligation, upon exercise of the option, to deliver the underlying security upon payment of the exercise price. If the option expires without being exercised the Fund is not required to deliver the underlying security and retains the premium received.

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The Fund may only write call options that are "covered." A call option on a security is covered if (a) the Fund owns the security underlying the call or has an absolute and immediate right to acquire that security without additional cash consideration (or, if additional cash consideration is required, such amount is maintained by the Fund in earmarked or segregated cash or liquid assets) upon conversion or exchange of other securities held by the Fund; or (b) the Fund has purchased a call on the underlying security, the exercise price of which is (i) equal to or less than the exercise price of the call written, or (ii) greater than the exercise price of the call written, provided the difference is maintained by the Fund in earmarked or segregated cash or liquid assets.

Selling call options involves the risk that the Fund may be required to sell the underlying security at a disadvantageous price, below the market price of such security, at the time the option is exercised. As the writer of a covered call option, the Fund forgoes, during the option's life, the opportunity to profit from increases in the market value of the underlying security covering the option above the sum of the premium and the exercise price but retains the risk of loss should the price of the underlying security decline.

The Fund may write put options. As the writer of a put option, the Fund receives the premium from the purchaser of the option and has the obligation, upon exercise of the option, to pay the exercise price and receive delivery of the underlying security. If the option expires without being exercised, the Fund is not required to receive the underlying security in exchange for the exercise price and retains the option premium.

The Fund may only write put options that are "covered." A put option on a security is covered if (a) the Fund earmarks or segregates cash or liquid assets equal to the exercise price; or (b) the Fund has purchased a put on the same security as the put written, the exercise price of which is (i) equal to or greater than the exercise price of the put written, or (ii) less than the exercise price of the put written, provided the difference is maintained by the Fund in earmarked or segregated cash or liquid assets.

Selling put options involves the risk that the Fund may be required to buy the underlying security at a disadvantageous price, above the market price of such security, at the time the option is exercised. While the Fund's potential gain in writing a covered put option is limited to the premium received plus the interest earned on the liquid assets covering the put option, the Fund's risk of loss is equal to the entire value of the underlying security, offset only by the amount of the premium received.

The Fund may close out an options position that it has written through a closing purchase transaction. The Fund could execute a closing purchase transaction with respect to a written call option by purchasing a call option on the same underlying security that has the same exercise price and expiration date as the call option written by the Fund. The Fund could execute a closing purchase transaction with respect to a put option written by purchasing a put option on the same underlying security and having the same exercise price and expiration date as the put option written by the Fund. A closing purchase transaction may or may not result in a profit to the Fund. The Fund can close out its position as an option writer only if a liquid market exists for options on the same underlying security that have the same exercise price and expiration date as the option written by the Fund. There is no assurance that such a market will exist with respect to any particular option.

The writer of an American option generally has no control over the time when the option is exercised and the option writer is required to deliver or acquire the underlying security. Once an option writer has received an exercise notice, it cannot effect a closing purchase transaction in order to terminate its obligation under the option. Thus, the use of options may require the Fund to buy or sell portfolio securities at inopportune times or for prices other than the current market values of such securities, which may limit the amount of appreciation the Fund can realize on an investment, or may cause the Fund to hold a security that it might otherwise sell.

*Purchasing Options.* The Fund may purchase call and put options. As the buyer of a call option, the Fund pays the premium to the option writer and has the right to purchase the underlying security from the option writer at the exercise price. If the market price of the underlying security rises above the exercise price, the Fund could exercise the option and acquire the underlying security at a below-market price, which could result in a gain to the Fund, minus the premium paid. As the buyer of a put option, the Fund pays the premium to the option writer and has the right to sell the underlying security to the option writer at the exercise price. If the market price of the underlying security declines below the exercise price, the Fund could exercise the option and sell the underlying security at an above-market price, which could result in a gain to the Fund, minus the premium paid. The Fund may buy call and put options whether or not it holds the underlying securities.

As a buyer of a call or put option, the Fund may sell put or call options that it has purchased at any time prior to such option's expiration date through a closing sale transaction. The principal factors affecting the market value of a put or a call option include supply and demand, interest rates, the current market price of the underlying security in relation to the exercise price of the option, the volatility of the underlying security, the underlying security's dividend policy, and the time remaining until the expiration date. A closing sale transaction may or may not result in a profit to the Fund. The Fund's ability to initiate a closing sale transaction is dependent upon the liquidity of the options market and there is no assurance that such a market will exist with respect to any particular option. If the Fund does not exercise or sell an option prior to its expiration date, the option expires and becomes worthless.

*OTC Options.* Unlike exchange-traded options, which are standardized with respect to the underlying instrument, expiration date, contract size and strike price, the terms of OTC options generally are established through negotiation between the parties to the

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options contract. This type of arrangement allows the purchaser and writer greater flexibility to tailor the option to their needs. OTC options are available for a greater variety of securities or baskets of securities, and in a wider range of expiration dates and exercise prices, than exchange-traded options. However, unlike exchange-traded options, which are issued and guaranteed by a regulated intermediary, such as the OCC, OTC options are entered into directly with the counterparty. Unless the counterparties provide for it, there is no central clearing or guaranty function for an OTC option. Therefore, OTC options are subject to the risk of default or non-performance by the counterparty. Accordingly, the Adviser must assess the creditworthiness of the counterparty to determine the likelihood that the terms of the option will be satisfied. There can be no assurance that a continuous liquid secondary market will exist for any particular OTC option at any specific time. As a result, the Fund may be unable to enter into closing sale transactions with respect to OTC options.

*Index Options.* Call and put options on indices operate similarly to options on securities. Rather than the right to buy or sell a single security at a specified price, options on an index give the holder the right to receive, upon exercise of the option, an amount of cash determined by reference to the difference between the value of the underlying index and the strike price. The underlying index may be a broad-based index or a narrower market index. Unlike many options on securities, all settlements are in cash. The settlement amount, which the writer of an index option must pay to the holder of the option upon exercise, is generally equal to the difference between the strike price of the option and the value of the underlying index, multiplied by a specified multiplier. The multiplier determines the size of the investment position the option represents. Gain or loss to the Fund on index options transactions will depend, in part, on price movements of the underlying index generally or in a particular segment of the index rather than price movements of individual components of the index. As with other options, the Fund may close out its position in index options through closing purchase transactions and closing sale transactions provided that a liquid secondary market exists for such options.

Index options written by the Fund will generally be covered in a manner similar to the covering of other types of options, by holding an offsetting financial position and/or earmarking or segregating cash or liquid assets. The Fund may cover call options written on an index by owning securities or other assets whose price changes, in the opinion of the Adviser, are expected to correlate to those of the underlying index.

*Foreign Currency Options.* Options on foreign currencies operate similarly to options on securities. Rather than the right to buy or sell a single security at a specified price, options on foreign currencies give the holder the right to buy or sell foreign currency for a fixed amount in U.S. dollars or other base currencies. Options on foreign currencies are traded primarily in the OTC market, but may also be traded on U.S. and foreign exchanges. The value of a foreign currency option is dependent upon the value of the underlying foreign currency relative to the U.S. dollar or other base currency. The price of the option may vary with changes, among other things, in the value of either or both currencies and has no relationship to the investment merits of a foreign security. Options on foreign currencies are affected by all of those factors that influence foreign exchange rates and foreign investment generally. As with other options, the Fund may close out its position in foreign currency options through closing purchase transactions and closing sale transactions provided that a liquid market exists for such options.

Foreign currency options written by the Fund will generally be covered in a manner similar to the covering of other types of options, by holding an offsetting financial position and/or earmarking or segregating cash or liquid assets.

*Additional Risks of Options Transactions.* The risks associated with options transactions are different from, and possibly greater than, the risks associated with investing directly in the underlying instruments. Options are highly specialized instruments that require investment techniques and risk analyses different from those associated with other portfolio investments. The use of options requires an understanding not only of the underlying instrument but also of the option itself. Options may be subject to the risk factors generally applicable to derivatives transactions described herein, and may also be subject to certain additional risk factors, including:

■ The exercise of options written or purchased by the Fund could cause the Fund to sell portfolio securities, thus increasing the Fund's portfolio turnover.

■ The Fund pays brokerage commissions each time it writes or purchases an option or buys or sells an underlying security in connection with the exercise of an option. Such brokerage commissions could be higher relative to the commissions for direct purchases of sales of the underlying securities.

■ The Fund's options transactions may be subject to limitations on options positions established by the SEC, the CFTC or the exchanges on which such options are traded.

■ The hours of trading for exchange-listed options may not coincide with the hours during which the underlying securities are traded. To the extent that the options markets close before the markets for the underlying securities, significant price and rate movements can take place in the underlying securities that cannot be reflected in the options markets.

■ Index options based upon a narrow index of securities or other assets may present greater risks than options based on broad market indices, as narrower indices are more susceptible to rapid and extreme fluctuations as a result of changes in the values of a smaller number of securities or other assets.

■ The Fund is subject to the risk of market movements between the time that an option is exercised and the time of performance thereunder, which could increase the extent of any losses suffered by the Fund in connection with options transactions.

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**Currency Forwards.** A foreign currency forward exchange contract is a negotiated agreement between two parties to exchange specified amounts of two or more currencies at a specified future time at a specified rate. The rate specified by the foreign currency forward exchange contract can be higher or lower than the spot rate between the currencies that are the subject of the contract. The Fund may also invest in non-deliverable foreign currency forward exchange contracts ("NDFs"). NDFs are similar to other foreign currency forward exchange contracts, but do not require or permit physical delivery of currency upon settlement. Instead, settlement is made in cash based on the difference between the contracted exchange rate and the spot foreign exchange rate at settlement. Currency futures are similar to foreign currency forward exchange contracts, except that they are traded on an exchange and standardized as to contract size and delivery date. Most currency futures call for payment or delivery in U.S. dollars. Unanticipated changes in currency prices may result in losses to the Fund and poorer overall performance for the Fund than if it had not entered into foreign currency forward exchange contracts. The typical use of a foreign currency forward exchange contract is to "lock in" the price of a security in U.S. dollars or some other foreign currency, which the Fund is holding in its portfolio. By entering into a foreign currency forward exchange contract for the purchase or sale, for a fixed amount of dollars or other currency, of the amount of foreign currency involved in the underlying security transactions, the Fund may be able to protect itself against a possible loss resulting from an adverse change in the relationship between the U.S. dollar or other currency which is being used for the security purchase and the foreign currency in which the security is denominated during the period between the date on which the security is purchased or sold and the date on which payment is made or received. The Adviser also may from time to time utilize foreign currency forward exchange contracts for other purposes. For example, they may be used to hedge a foreign security held in the portfolio against a decline in value of the applicable foreign currency. They also may be used to lock in the current exchange rate of the currency in which those securities anticipated to be purchased are denominated. At times, the Fund may enter into "cross-currency" hedging transactions involving currencies other than those in which securities are held or proposed to be purchased are denominated.

The Fund will not enter into foreign currency forward exchange contracts or maintain a net exposure to these contracts where the consummation of the contracts would obligate the Fund to deliver an amount of foreign currency in excess of the value of the Fund's portfolio securities.

The Fund may be limited in its ability to enter into hedging transactions involving foreign currency forward exchange contracts by the Code requirements relating to qualification as a RIC.

Foreign currency forward exchange contracts may limit gains on portfolio securities that could otherwise be realized had they not been utilized and could result in losses. The contracts also may increase the Fund's volatility and may involve a significant amount of risk relative to the investment of cash.

**Futures Contracts.** A futures contract is a standardized agreement to buy or sell a specific quantity of an underlying asset, reference rate or index at a specific price at a specific future time (the "settlement date"). Futures contracts may be based on, among other things, a specified equity security (securities futures), a specified debt security or reference rate (interest rate futures), the value of a specified securities index (index futures) or the value of a foreign currency (currency futures). While the value of a futures contract tends to increase and decrease in tandem with the value of the underlying instrument, differences between the futures market and the market for the underlying asset may result in an imperfect correlation. The buyer of a futures contract agrees to purchase the underlying instrument on the settlement date and is said to be "long" the contract. The seller of a futures contract agrees to sell the underlying instrument on the settlement date and is said to be "short" the contract. Futures contracts call for settlement only on the expiration date and cannot be "exercised" at any other time during their term.

Depending on the terms of the particular contract, futures contracts are settled through either physical delivery of the underlying instrument on the settlement date (such as in the case of futures based on a specified debt security) or by payment of a cash settlement amount on the settlement date (such as in the case of futures contracts relating to broad-based securities indices). In the case of cash-settled futures contracts, the settlement amount is equal to the difference between the reference instrument's price on the last trading day of the contract and the reference instrument's price at the time the contract was entered into. Most futures contracts, particularly futures contracts requiring physical delivery, are not held until the settlement date, but instead are offset before the settlement date through the establishment of an opposite and equal futures position (buying a contract that had been sold, or selling a contract that had been purchased). All futures transactions are effected through a clearinghouse associated with the exchange on which the futures are traded.

The buyer and seller of a futures contract are not required to deliver or pay for the underlying commodity unless the contract is held until the settlement date. However, both the buyer and seller are required to deposit "initial margin" with a futures commission merchant ("FCM") when the futures contract is entered into. Initial margin deposits are typically calculated as a percentage of the contract's market value. If the value of either party's position declines, the party will be required to make additional "variation margin" payments to settle the change in value on a daily basis. The process is known as "marking-to-market." Upon the closing of a futures position through the establishment of an offsetting position, a final determination of variation margin will be made and additional cash will be paid by or released to the Fund.

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*Options on Futures Contracts.* Options on futures contracts are similar to options on securities except that options on futures contracts give the purchasers the right, in return for the premium paid, to assume a position in a futures contract (a long position in the case of a call option and a short position in the case of a put option) at a specified exercise price at any time prior to the expiration of the option. Upon exercise of the option, the parties will be subject to all of the risks associated with futures transactions and subject to margin requirements. As the writer of options on futures contracts, the Fund would also be subject to initial and variation margin requirements on the option position.

Options on futures contracts written by the Fund will generally be covered in a manner similar to the covering of other types of options, by holding an offsetting financial position and/or earmarking or segregating cash or liquid assets. The Fund may cover an option on a futures contract by purchasing or selling the underlying futures contract. In such instances the exercise of the option will serve to close out the Fund's futures position.

*Additional Risks of Futures Transactions.* The risks associated with futures contract transactions are different from, and possibly greater than, the risks associated with investing directly in the underlying instruments. Futures are highly specialized instruments that require investment techniques and risk analyses different from those associated with other portfolio investments. The use of futures requires an understanding not only of the underlying instrument but also of the futures contract itself. Futures may be subject to the risk factors generally applicable to derivatives transactions described herein, and may also be subject to certain additional risk factors, including:

■ The risk of loss in buying and selling futures contracts can be substantial. Small price movements in the commodity, security, index, currency or instrument underlying a futures position may result in immediate and substantial loss (or gain) to the Fund.

■ Buying and selling futures contracts may result in losses in excess of the amount invested in the position in the form of initial margin. In the event of adverse price movements in the underlying commodity, security, index, currency or instrument, the Fund would be required to make daily cash payments to maintain its required margin. The Fund may be required to sell portfolio securities, or make or take delivery of the underlying securities in order to meet daily margin requirements at a time when it may be disadvantageous to do so. The Fund could lose margin payments deposited with an FCM if the FCM breaches its agreement with the Fund, becomes insolvent or declares bankruptcy.

■ Most exchanges limit the amount of fluctuation permitted in futures contract prices during any single trading day. Once the daily limit has been reached in a particular futures contract, no trades may be made on that day at prices beyond that limit. If futures contract prices were to move to the daily limit for several trading days with little or no trading, the Fund could be prevented from prompt liquidation of a futures position and subject to substantial losses. The daily limit governs only price movements during a single trading day and therefore does not limit the Fund's potential losses.

■ Index futures based upon a narrower index of securities may present greater risks than futures based on broad market indices, as narrower indices are more susceptible to rapid and extreme fluctuations as a result of changes in value of a small number of securities.

**Swaps.** An OTC swap contract is an agreement between two parties pursuant to which the parties exchange payments at specified dates on the basis of a specified notional amount, with the payments calculated by reference to specified securities, indices, reference rates, currencies or other instruments. Most swap agreements provide that when the period payment dates for both parties are the same, the payments are made on a net basis (i.e., the two payment streams are netted out, with only the net amount paid by one party to the other). The Fund's obligations or rights under a swap contract entered into on a net basis will generally be equal only to the net amount to be paid or received under the agreement, based on the relative values of the positions held by each counterparty. Many swap agreements are not entered into or traded on exchanges and often there is no central clearing or guaranty function for swaps. These OTC swaps are often subject to the risk of default or non-performance by the counterparty. Accordingly, the Adviser must assess the creditworthiness of the counterparty to determine the likelihood that the terms of the swap will be satisfied.

Swap agreements allow for a wide variety of transactions. For example, fixed-rate payments may be exchanged for floating rate payments, U.S. dollar-denominated payments may be exchanged for payments denominated in foreign currencies, and payments tied to the price of one security, index, reference rate, currency or other instrument may be exchanged for payments tied to the price of a different security, index, reference rate, currency or other instrument. Swap contracts are typically individually negotiated and structured to provide exposure to a variety of particular types of investments or market factors. Swap contracts can take many different forms and are known by a variety of names. To the extent consistent with the Fund's investment objective and policies, the Fund is not limited to any particular form or variety of swap contract. The Fund may utilize swaps to increase or decrease its exposure to the underlying instrument, reference rate, foreign currency, market index or other asset. The Fund may also enter into related derivative instruments including caps, floors and collars.

The Dodd-Frank Wall Street Reform and Consumer Protection Act ("Dodd-Frank Act") and related regulatory developments require the eventual clearing and exchange-trading of many standardized OTC derivative instruments that the CFTC and SEC defined as "swaps" and "security based swaps," respectively. Mandatory exchange-trading and clearing is occurring on a phased-in basis based on the type of market participant and CFTC approval of contracts for central clearing and exchange-trading. In a cleared swap, the Fund's ultimate counterparty is a central clearinghouse rather than a brokerage firm, bank or other financial institution. The Fund initially will enter into cleared swaps through an executing broker. Such transactions will then be submitted for

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clearing and, if cleared, will be held at regulated FCMs that are members of the clearinghouse that serves as the central counterparty. When the Fund enters into a cleared swap, it must deliver to the central counterparty (via an FCM) an amount referred to as "initial margin." Initial margin requirements are determined by the central counterparty, but an FCM may require additional initial margin above the amount required by the central counterparty. During the term of the swap agreement, a "variation margin" amount may also be required to be paid by the Fund or may be received by the Fund in accordance with margin controls set for such accounts, depending upon changes in the price of the underlying reference asset subject to the swap agreement. At the conclusion of the term of the swap agreement, if the Fund has a loss equal to or greater than the margin amount, the margin amount is paid to the FCM along with any loss that is greater than such margin amount. If the Fund has a loss of less than the margin amount, the excess margin is returned to the Fund. If the Fund has a gain, the full margin amount and the amount of the gain is paid to the Fund.

Central clearing is designed to reduce counterparty credit risk compared to uncleared swaps because central clearing interposes the central clearinghouse as the counterparty to each participant's swap, but it does not eliminate those risks completely. There is also a risk of loss by the Fund of the initial and variation margin deposits in the event of bankruptcy of the FCM with which the Fund has an open position in a swap contract. The assets of the Fund may not be fully protected in the event of the bankruptcy of the FCM or central counterparty because the Fund might be limited to recovering only a pro rata share of all available funds and margin segregated on behalf of an FCM's or central counterparty's customers or clearing members. If the FCM does not provide accurate reporting, the Fund is also subject to the risk that the FCM could use the Fund's assets, which are held in an omnibus account with assets belonging to the FCM's other customers, to satisfy its own financial obligations or the payment obligations of another customer to the central counterparty.

As a result of recent regulatory developments, certain standardized swaps are currently subject to mandatory central clearing and some of these cleared swaps must be traded on an exchange or swap execution facility ("SEF"). An SEF is an electronic trading platform in which multiple market participants can execute swap transactions by accepting bids and offers made by multiple other participants on the platform. Transactions executed on an SEF may increase market transparency and liquidity but may cause the Fund to incur increased expenses to execute swaps. Central clearing should decrease counterparty risk and increase liquidity compared to bilateral swaps because central clearing interposes the central clearinghouse as the counterparty to each participant's swap. However, central clearing does not eliminate counterparty risk or liquidity risk entirely. In addition, depending on the size of the Fund and other factors, the margin required under the rules of a clearinghouse and by a clearing member may be in excess of the collateral required to be posted by the Fund to support its obligations under a similar bilateral swap. However, the CFTC and other applicable regulators have adopted rules imposing certain margin requirements, including minimums, on uncleared swaps which may result in the Fund and its counterparties posting higher margin amounts for uncleared swaps. Requiring margin on uncleared swaps may reduce, but not eliminate, counterparty credit risk.

In addition, with respect to cleared swaps, the Fund may not be able to obtain as favorable terms as it would be able to negotiate for an uncleared swap. In addition, an FCM may unilaterally impose position limits or additional margin requirements for certain types of swaps in which the Fund may invest. Central counterparties and FCMs generally can require termination of existing cleared swap transactions at any time, and can also require increases in margin above the margin that is required at the initiation of the swap agreement. Margin requirements for cleared swaps vary on a number of factors, and the margin required under the rules of the clearinghouse and FCM may be in excess of the collateral required to be posted by the Fund to support its obligations under a similar uncleared swap. However, as noted above, regulators have adopted rules imposing certain margin requirements, including minimums, on uncleared swaps, which may result in the Fund and its counterparties posting higher margin amounts for uncleared swaps. Requiring margin on uncleared swaps may reduce, but not eliminate, counterparty credit risk.

The Fund is also subject to the risk that, after entering into a cleared swap with an executing broker, no FCM or central counterparty is willing or able to clear the transaction. In such an event, the central counterparty would void the trade. Before the Fund can enter into a new trade, market conditions may become less favorable to the Fund.

The Adviser will continue to monitor developments regarding trading and execution of cleared swaps on exchanges, particularly to the extent regulatory changes affect the Fund's ability to enter into swap agreements and the costs and risks associated with such investments.

*Interest Rate Swaps, Caps, Floors and Collars.* Interest rate swaps consist of an agreement between two parties to exchange their respective commitments to pay or receive interest (e.g., an exchange of floating rate payments for fixed-rate payments). Interest rate swaps are generally entered into on a net basis. Interest rate swaps do not involve the delivery of securities, other underlying assets, or principal. Accordingly, the risk of market loss with respect to interest rate and total rate of return swaps is typically limited to the net amount of interest payments that the Fund is contractually obligated to make.

The Fund may also buy or sell interest rate caps, floors and collars. The purchase of an interest rate cap entitles the purchaser, to the extent that a specified interest rate index exceeds a predetermined level, to receive payments of interest on a specified notional amount from the party selling the interest rate cap. The purchase of an interest rate floor entitles the purchaser, to the extent that a specified interest rate falls below a predetermined level, to receive payments of interest on a specified notional amount from the party

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selling the interest rate floor. A collar is a combination of a cap and a floor that preserves a certain return within a predetermined range of interest rates. Caps, floors and collars may be less liquid than other types of derivatives.

*Index Swaps.* An index swap consists of an agreement between two parties in which a party typically exchanges a cash flow based on a notional amount of a reference index for a cash flow based on a different index or on another specified instrument or reference rate. Index swaps are generally entered into on a net basis.

*Total Return Swaps.* Total return swaps are contracts in which one party agrees to make periodic payments to another party based on the change in market value of the assets underlying the contract, which may include, but not be limited to, a specified security, basket of securities or securities indices during the specified period, in return for periodic payments based on a fixed or variable interest rate or the total return from other underlying assets. Total return swaps may be used to obtain long or short exposure to a security or market without owning or taking physical custody of such security or investing directly in such market. The Fund may incur a theoretically unlimited loss on short exposures. In comparison, the Fund may incur losses on long exposures, but such losses are limited by the fact that the underlying security's price cannot fall below zero. Total return swaps may effectively add leverage to the Fund's portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the notional amount of the swap.

Total return swaps are subject to the risk that a counterparty will default on its payment obligations to the Fund thereunder, and conversely, that the Fund will not be able to meet its obligation to the counterparty. Generally, the Fund will enter into total return swaps on a net basis (i.e., the two payment streams are netted against one another with the Fund receiving or paying, as the case may be, only the net amount of the two payments).

*Inflation Swaps.* Inflation swap agreements are contracts in which one party typically agrees to pay the cumulative percentage increase in a price index, such as the Consumer Price Index, over the term of the swap (with some lag on the referenced inflation index), and the other party pays a compounded fixed rate. Inflation swap agreements may be used to protect the NAV of the Fund against an unexpected change in the rate of inflation measured by an inflation index. The value of inflation swap agreements is expected to change in response to changes in real interest rates. Real interest rates are tied to the relationship between nominal interest rates and the rate of inflation.

*Currency Swaps.* A currency swap consists of an agreement between two parties to exchange cash flows on a notional amount of two or more currencies based on the relative value differential among them, such as exchanging a right to receive a payment in foreign currency for the right to receive U.S. dollars. Currency swap agreements may be entered into on a net basis or may involve the delivery of the entire principal value of one designated currency in exchange for the entire principal value of another designated currency. In such cases, the entire principal value of a currency swap is subject to the risk that the counterparty will default on its contractual delivery obligations.

*Credit Default Swaps.* A credit default swap consists of an agreement between two parties in which the "buyer" typically agrees to pay to the "seller" a periodic stream of payments over the term of the contract and the seller agrees to pay the buyer the par (or other agreed-upon) value of a referenced debt obligation upon the occurrence of a credit event with respect to the issuer of that referenced debt obligation. Generally, a credit event means bankruptcy, failure to pay, obligation acceleration or modified restructuring. The Fund may be either the buyer or seller in a credit default swap. Where the Fund is the buyer of a credit default swap contract, it would typically be entitled to receive the par (or other agreed-upon) value of a referenced debt obligation from the counterparty to the contract only in the event of a default or similar event by the issuer of the debt obligation. If no default occurs, the Fund would have paid to the counterparty a periodic stream of payments over the term of the contract and received no benefit from the contract. The use of credit default swaps could result in losses to the Fund if the Adviser fails to correctly evaluate the creditworthiness of the issuer of the referenced debt obligation.

*Swaptions.* An option on a swap agreement, also called a "swaption," is an option that gives the buyer the right, but not the obligation, to enter into a swap on a future date in exchange for a premium. A receiver swaption gives the owner the right to receive the return of a specified asset, reference rate, or index. A payer swaption gives the owner the right to pay the return of a specified asset, reference rate, or index. Swaptions also include options that allow an existing swap to be terminated or extended by one of the counterparties.

*General Risks of Swaps.* The risks associated with swap transactions are different from, and possibly greater than, the risks associated with investing directly in the underlying instruments. Swaps are highly specialized instruments that require investment techniques and risk analyses different from those associated with other portfolio investments. The use of swaps requires an understanding not only of the underlying instrument but also of the swap contract itself. Swap transactions may be subject to the risk factors generally applicable to derivatives transactions described above, and may also be subject to certain additional risk factors, including:

■ OTC swap agreements are not traded on exchanges and may be subject to liquidity risk, which exists when a particular swap is difficult to purchase or sell.

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■ In addition to the risk of default by the counterparty, if the creditworthiness of a counterparty to a swap agreement declines, the value of the swap agreement would be likely to decline, potentially resulting in losses.

■ The swaps market is subject to extensive regulation under the Dodd-Frank Act and certain CFTC and SEC rules promulgated thereunder. It is possible that further developments in the swaps market, including new and additional governmental regulation, could result in higher Fund costs and expenses and could adversely affect the Fund's ability to utilize swaps, terminate existing swap agreements or realize amounts to be received under such agreements.

**Foreign Securities.** Investing in foreign securities involves certain special considerations which are not typically associated with investments in the securities of U.S. issuers. Foreign issuers are not generally subject to uniform accounting, auditing and financial reporting standards and may have policies that are not comparable to those of domestic issuers. As a result, there may be less information available about foreign issuers than about domestic issuers. Securities of some foreign issuers may be less liquid and more volatile than securities of comparable domestic issuers. There is generally less stringent investor protections and disclosure standards, and less government supervision and regulation of stock exchanges, brokers and listed issuers than in the United States. In addition, with respect to certain foreign countries, there is a possibility of expropriation or confiscatory taxation, political and social instability, or diplomatic developments which could affect U.S. investments in those countries. The costs of investing in foreign countries frequently are higher than the costs of investing in the United States. Although the Adviser endeavors to achieve the most favorable execution costs in portfolio transactions, fixed commissions on many foreign stock exchanges are generally higher than negotiated commissions on U.S. exchanges. In addition, investments in certain foreign markets that have historically been considered stable may become more volatile and subject to increased risk due to ongoing developments and changing conditions in such markets. Moreover, the growing interconnectivity of global economies and financial markets has increased the probability that adverse developments and conditions in one country or region will affect the stability of economies and financial markets in other countries or regions. For instance, if one or more countries leave the European Union ("EU") or the EU dissolves, the world's securities markets likely will be significantly disrupted.

Investments in foreign markets may also be adversely affected by governmental actions such as the imposition of capital controls, nationalization of companies or industries, expropriation of assets or the imposition of punitive taxes. The governments of certain countries may prohibit or impose substantial restrictions on foreign investing in their capital markets or in certain sectors or industries. In addition, a foreign government may limit or cause delay in the convertibility or repatriation of its currency which would adversely affect the U.S. dollar value and/or liquidity of investments denominated in that currency. Certain foreign investments may become less liquid in response to market developments or adverse investor perceptions, or become illiquid after purchase by the Fund, particularly during periods of market turmoil. When the Fund holds illiquid investments, its portfolio may be harder to value.

Investments in securities of foreign issuers may be denominated in foreign currencies. Accordingly, the value of the Fund's assets, as measured in U.S. dollars, may be affected favorably or unfavorably by changes in currency exchange rates and in exchange control regulations. The Fund may incur costs in connection with conversions between various currencies.

Certain foreign markets may rely heavily on particular industries or foreign capital and are more vulnerable to diplomatic developments, the imposition of economic sanctions against a particular country or countries, organizations, companies, entities and/or individuals, changes in international trading patterns, trade barriers, and other protectionist or retaliatory measures. International trade barriers or economic sanctions against foreign countries, organizations, companies, entities and/or individuals, may adversely affect the Fund's foreign holdings or exposures. Investments in foreign markets may also be adversely affected by governmental actions such as the imposition of capital controls, nationalization of companies or industries, expropriation of assets, or the imposition of punitive taxes. Governmental actions can have a significant effect on the economic conditions in foreign countries, which also may adversely affect the value and liquidity of the Fund's investments. For example, the governments of certain countries may prohibit or impose substantial restrictions on foreign investing in their capital markets or in certain sectors or industries. In addition, a foreign government may limit or cause delay in the convertibility or repatriation of its currency which would adversely affect the U.S. dollar value and/or liquidity of investments denominated in that currency. Any of these actions could severely affect security prices, impair the Fund's ability to purchase or sell foreign securities or transfer the Fund's assets back into the U.S., or otherwise adversely affect the Fund's operations. Certain foreign investments may become less liquid in response to market developments or adverse investor perceptions, or become illiquid after purchase by the Fund, particularly during periods of market turmoil. Certain foreign investments may become illiquid when, for instance, there are few, if any, interested buyers and sellers or when dealers are unwilling to make a market for certain securities. When the Fund holds illiquid investments, its portfolio may be harder to value.

Certain foreign governments may levy withholding or other taxes on dividend and interest income. Although in some countries a portion of these taxes may be recoverable, the non-recovered portion of foreign withholding taxes will reduce the income received from investments in such countries. The Fund may be able to pass through to its shareholders a credit for U.S. tax purposes with respect to any such foreign taxes.

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Unless otherwise noted in the Fund's Prospectus, the Adviser may consider an issuer to be from a particular country (including the United States) or geographic region if: (i) its principal securities trading market is in that country or geographic region; (ii) alone or on a consolidated basis it derives 50% or more of its annual revenue or profits from goods produced, sales made or services performed in that country or geographic region or has at least 50% of its assets, core business operations and/or employees in that country or geographic region; or (iii) it is organized under the laws of, or has a principal office in, that country or geographic region. By applying these tests, it is possible that a particular issuer could be deemed to be from more than one country or geographic region.

Foreign securities may include, without limitation, foreign equity securities, which are equity securities of a non-U.S. issuer, foreign government fixed-income securities, which are fixed-income securities issued by a government other than the U.S. Government or government-related issuer in a country other than the United States, and foreign corporate fixed-income securities, which are fixed-income securities issued by a private issuer in a country other than the United States.

Investments in foreign companies and countries are subject to economic sanction and trade laws in the United States and other jurisdictions. These laws and related governmental actions may, from time to time, prohibit the Fund from investing in certain countries and in certain companies. Investments in certain countries and companies may be, and have in the past been, restricted as a result of the imposition of economic sanctions. In addition, economic sanction laws in the United States and other jurisdictions may prohibit the Fund from transacting with a particular country or countries, organizations, companies, entities and/or individuals. These types of sanctions may significantly restrict or completely prohibit investment activities in certain jurisdictions.

Economic sanctions and other similar governmental actions could, among other things, effectively restrict or eliminate the Fund's ability to purchase or sell securities or groups of securities, and thus may make the Fund's investments in such securities less liquid or more difficult to value. In addition, as a result of economic sanctions, the Fund may be forced to sell or otherwise dispose of investments at inopportune times or prices, which could result in losses to the Fund and increased transaction costs. These conditions may be in place for a substantial period of time and enacted with limited advance notice to the Fund.

In addition, such economic sanctions or other government restrictions may negatively impact the value or liquidity of the Fund's investments, and could impair the Fund's ability to meet its investment objective or invest in accordance with its investment strategy because the Fund may, for example, be prohibited from investing in securities issued by companies subject to such restrictions and the Fund could be required to freeze or divest its existing investments that the Adviser would otherwise consider to be attractive.

The risks posed by economic sanctions against a particular foreign country, its nationals or industries or businesses within the country may be heightened to the extent the Fund invests significantly in the affected country or region or in issuers from the affected country that depend on global markets.

*Referendum on the UK's EU Membership.* In an advisory referendum held in June 2016, the United Kingdom ("UK") electorate voted to leave the EU, an event widely referred to as "Brexit." On January 31, 2020, the UK officially withdrew from the EU and the UK entered a transition period which ended on December 31, 2020. On December 30, 2020, the EU and UK signed the EU-UK Trade and Cooperation Agreement ("TCA"), an agreement on the terms governing certain aspects of the EU's and the UK's relationship following the end of the transition period. Notwithstanding the TCA, following the transition period, there is likely to be considerable uncertainty as to the UK's post-transition framework.

The impact on the UK and the EU and the broader global economy is still unknown but could be significant and could result in increased volatility and illiquidity and potentially lower economic growth. Brexit may have a negative impact on the economy and currency of the UK and the EU as a result of anticipated, perceived or actual changes to the UK's economic and political relations with the EU. The impact of Brexit, and its ultimate implementation, on the economic, political and regulatory environment of the UK and the EU could have global ramifications.

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**Emerging Market Securities.** The Fund may invest in emerging market securities. An emerging market security is a security issued by an emerging market foreign government or private issuer. An emerging market foreign government or private issuer has one or more of the following characteristics: (i) its principal securities trading market is in an emerging market or developing country; (ii) alone or on a consolidated basis it derives 50% or more of its annual revenue or profits from goods produced, sales made or services performed in an emerging market or developing country or has at least 50% of its assets, core business operations and/or employees in an emerging market or developing country; or (iii) it is organized under the laws of, or has a principal office in, an emerging market or developing country. Based on these criteria it is possible for a security to be considered issued by an issuer in more than one country. Therefore, it is possible for the securities of any issuer that has one or more of these characteristics in connection with any emerging market or developing country not to be considered an emerging market security if it also has one or more of these characteristics in connection with a developed country.

Emerging market describes any country that is generally considered to be an emerging or developing country by major organizations in the international financial community or by the Fund's benchmark index.

The economies of individual emerging market or developing countries may differ favorably or unfavorably from the U.S. economy in such respects as growth of gross domestic product, rate of inflation or deflation, currency depreciation, capital reinvestment, resource self-sufficiency and balance of payments position. Further, the economies of developing countries generally are heavily dependent upon international trade and, accordingly, have been, and may continue to be, adversely affected by trade barriers, exchange controls, managed adjustments in relative currency values and other protectionist measures. These economies also have been, and may continue to be, adversely affected by economic conditions in the countries with which they trade.

Prior governmental approval for foreign investments may be required under certain circumstances in some emerging market or developing countries, and the extent of foreign investment in certain fixed-income securities and domestic companies may be subject to limitation in other emerging market or developing countries. Foreign ownership limitations also may be imposed by the charters of individual companies in emerging market or developing countries to prevent, among other concerns, violation of foreign investment limitations. Repatriation of investment income, capital and the proceeds of sales by foreign investors may require governmental registration and/or approval in some emerging countries. The Fund could be adversely affected by delays in, or a refusal to grant, any required governmental registration or approval for such repatriation. Any investment subject to such repatriation controls will be considered illiquid if it appears reasonably likely that this process will take more than seven days.

Certain emerging market countries may be subject to less stringent requirements regarding accounting, auditing, financial reporting and record keeping and therefore, material information related to an investment may not be available or reliable. In addition, the Fund is limited in its ability to exercise its legal rights or enforce a counterparty's legal obligations in certain jurisdictions outside of the United States, in particular, in emerging markets countries.

Investment in emerging market or developing countries may entail purchasing securities issued by or on behalf of entities that are insolvent, bankrupt, in default or otherwise engaged in an attempt to reorganize or reschedule their obligations and in entities that have little or no proven credit rating or credit history. In any such case, the issuer's poor or deteriorating financial condition may increase the likelihood that the Fund will experience losses or diminution in available gains due to bankruptcy, insolvency or fraud. Emerging market or developing countries also pose the risk of nationalization, expropriation or confiscatory taxation, political changes, government regulation, social instability or diplomatic developments (including war) that could adversely affect the economies of such countries or the value of the Fund's investments in those countries. In addition, it may be difficult to obtain and enforce a judgment in a court outside the United States.

The Fund may also be exposed to an extra degree of custodial and/or market risk, especially where the securities purchased are not traded on an official exchange or where ownership records regarding the securities are maintained by an unregulated entity (or even the issuer itself).

**Brady Bonds.** Brady Bonds are fixed-income securities that are created through the exchange of existing commercial bank loans to foreign entities for new obligations in connection with debt restructuring under a plan introduced by Nicholas F. Brady when he was the U.S. Secretary of the Treasury. They may be collateralized or uncollateralized and issued in various currencies (although most are U.S. dollar-denominated) and they are actively traded in the OTC secondary market. The Fund will invest in Brady Bonds only if they are consistent with the Fund's quality specifications. Dollar-denominated, collateralized Brady Bonds may be fixed-rate par bonds or floating rate discount bonds. Interest payments on Brady Bonds generally are collateralized by cash or securities in an amount that, in the case of fixed-rate bonds, is equal to at least one year of rolling interest payments or, in the case of floating rate bonds, initially is equal to at least one year's rolling interest payments based on the applicable interest rate at that time and is adjusted at regular intervals thereafter. Certain Brady Bonds are entitled to "value recovery payments" in certain circumstances, which in effect constitute supplemental interest payments but generally are not collateralized.

Brady Bonds are often viewed as having three or four valuation components: (i) the collateralized repayment of principal at final maturity; (ii) the collateralized interest payments; (iii) the uncollateralized interest payments; and (iv) any uncollateralized repayment of principal at maturity (these uncollateralized amounts constitute the "residual risk"). In the event of a default with respect to

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collateralized Brady Bonds as a result of which the payment obligations of the issuer are accelerated, the U.S. Treasury zero coupon obligations held as collateral for the payment of principal will not be distributed to investors, nor will such obligations be sold and the proceeds distributed. The collateral will be held by the collateral agent to the scheduled maturity of the defaulted Brady Bonds, which will continue to be outstanding, at which time the face amount of the collateral will equal the principal payments due on the Brady Bonds in the normal course. However, Brady Bonds should be viewed as speculative in light of the history of defaults with respect to commercial bank loans by public and private entities of countries issuing Brady Bonds.

**Sovereign Debt.** Debt obligations known as "sovereign debt" are obligations of governmental issuers in emerging market or developing countries and industrialized countries. Certain emerging market or developing countries are among the largest debtors to commercial banks and foreign governments. The issuer or governmental authority that controls the repayment of sovereign debt may not be willing or able to repay the principal and/or pay interest when due in accordance with the terms of such obligations.

A governmental entity's willingness or ability to repay principal and pay interest due in a timely manner may be affected by, among other factors, its cash flow situation, the extent of its foreign reserves, the availability of sufficient foreign exchange on the date a payment is due, the relative size of the debt service burden to the economy as a whole, the government's dependence on expected disbursements from third parties, the government's policy toward the International Monetary Fund and the political constraints to which a government may be subject. Governmental entities may also be dependent on expected disbursements from foreign governments, multilateral agencies and others abroad to reduce principal and interest arrearages on their debt. The commitment on the part of these governments, agencies and others to make such disbursements may be conditioned on a debtor's implementation of economic reforms or economic performance and the timely service of such debtor's obligations. Failure to implement such reforms, achieve such levels of economic performance or repay principal or interest when due may result in the cancellation of such third parties' commitments to lend funds to the government debtor, which may further impair such debtor's ability or willingness to timely service its debts. Holders of sovereign debt may be requested to participate in the rescheduling of such debt and to extend further loans to governmental entities. In addition, no assurance can be given that the holders of commercial bank debt will not contest payments to the holders of other foreign government debt obligations in the event of default under their commercial bank loan agreements. The issuers of the government debt securities in which the Fund may invest have in the past experienced substantial difficulties in servicing their external debt obligations, which led to defaults on certain obligations and the restructuring of certain indebtedness. Restructuring arrangements have included, among other things, reducing and rescheduling interest and principal payments by negotiating new or amended credit agreements or converting outstanding principal and unpaid interest to Brady Bonds, and obtaining new credit to finance interest payments. There can be no assurance that the Brady Bonds and other foreign government debt securities in which the Fund may invest will not be subject to similar restructuring arrangements or to requests for new credit, which may adversely affect the Fund's holdings. Furthermore, certain participants in the secondary market for such debt may be directly involved in negotiating the terms of these arrangements and may therefore have access to information not available to other market participants.

**Money Market Securities.** In addition to the short-term fixed-income securities in which the Fund may otherwise invest, the Fund may invest in various money market securities for cash management purposes or when assuming a temporary defensive position, which among others may include commercial paper, bankers' acceptances, bank obligations, corporate debt securities, certificates of deposit, U.S. government securities, obligations of savings institutions and repurchase agreements. Such securities are limited to:

*U.S. Government Securities.* Obligations issued or guaranteed as to principal and interest by the United States or its agencies (such as the Export-Import Bank of the United States, Federal Housing Administration and Government National Mortgage Association) or its instrumentalities (such as the Federal Home Loan Bank), including Treasury bills, notes and bonds; issuers, such as the Federal National Mortgage Association ("Fannie Mae") and the Federal Home Loan Mortgage Corporation ("Freddie Mac"), that are supported by the discretionary authority of the U.S. government to purchase certain obligations of the issuer to assist it in meeting its debt obligations; and other issuers, such as the Federal Farm Credit System, that are supported only by the credit of such issuer.

If a U.S. government security is not backed by the full faith and credit of the United States, the investor must look principally to the agency or instrumentality issuing or guaranteeing the obligation for ultimate repayment and may not be able to assert a claim against the United States itself in the event the agency or instrumentality does not meet its commitment. The maximum potential liability of the issuers of some U.S. government securities held by the Fund may greatly exceed their current resources, including their legal right to support from the U.S. Treasury. It is possible that these issuers will not have the funds to meet their payment obligations in the future.

*Bank Obligations.* Obligations (including certificates of deposit, time deposits and bankers' acceptances) of banks subject to regulation by the U.S. Government and having total assets of $1 billion or more, and instruments secured by such obligations, not including obligations of foreign branches of domestic banks except to the extent below;

*Eurodollar Certificates of Deposit .* Eurodollar certificates of deposit issued by foreign branches of domestic banks having total assets of $1 billion or more;

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*Obligations of Savings Institutions*. Certificates of deposit of savings banks and savings and loan associations, having total assets of $1 billion or more;

*Fully Insured Certificates of Deposit.* Certificates of deposit of banks and savings institutions, having total assets of less than $1 billion, if the principal amount of the obligation is federally insured by the Bank Insurance Fund or the Savings Association Insurance Fund (each of which is administered by the FDIC), limited to $250,000 principal amount per certificate and to 10% or less of the Fund's total assets in all such obligations and in all illiquid assets in the aggregate;

*Commercial Paper.* Commercial paper rated at time of purchase by one or more nationally recognized statistical rating organizations in one of their two highest categories (e.g., A-l or A-2 by S&P, Prime 1 or Prime 2 by Moody's or F1 or F2 by Fitch Ratings, Inc. ("Fitch")) or, if not rated, determined to be of comparable quality by the Adviser; and

**Repurchase Agreements** **.** The Fund may invest in repurchase agreements. When cash may be available for only a few days, it may be invested by the Fund in repurchase agreements until such time as it may otherwise be invested or used for payments of obligations of the Fund. These agreements typically involve the acquisition by the Fund of debt securities from a selling financial institution such as a bank, savings and loan association or broker-dealer. The agreement provides that the Fund will sell back to the institution, and that the institution will repurchase, the underlying securities serving as collateral at a specified price and at a fixed time in the future, usually not more than seven days from the date of purchase. The collateral will be marked-to-market daily to determine that the value of the collateral, as specified in the agreement, does not decrease below the purchase price plus accrued interest. If such decrease occurs, additional collateral will be requested and, when received, added to the account to maintain full collateralization. The Fund will accrue interest from the institution until the time when the repurchase is to occur. Although this date is deemed by the Fund to be the maturity date of a repurchase agreement, the maturities of securities subject to repurchase agreements are not subject to any limits.

While repurchase agreements involve certain risks not associated with direct investments in debt securities, the Fund follows procedures approved by the Trustees that are designed to minimize such risks. These procedures include effecting repurchase transactions only with large, well-capitalized and well-established financial institutions whose financial condition will be continually monitored by the Adviser. In addition, as described above, the value of the collateral underlying the repurchase agreement will be at least equal to the repurchase price, including any accrued interest earned on the repurchase agreement. In the event of a default or bankruptcy by a selling financial institution, the Fund will seek to liquidate such collateral. However, the exercising of the Fund's right to liquidate such collateral could involve certain costs or delays and, to the extent that proceeds from any sale upon a default of the obligation to repurchase were less than the repurchase price, the Fund could suffer a loss.

**Reverse Repurchase Agreements and Dollar Rolls.** The Fund may invest up to 10% of its total assets in reverse repurchase agreements and dollar rolls. Under a reverse repurchase agreement, the Fund sells a security and promises to repurchase that security at an agreed-upon future date and price. The price paid to repurchase the security reflects interest accrued during the term of the agreement. Reverse repurchase agreements may be entered into for, among other things, obtaining leverage, facilitating short-term liquidity or when the Adviser expects that the interest income to be earned from the investment of the transaction proceeds will be greater than the related interest expense. Reverse repurchase agreements may be viewed as a speculative form of borrowing called leveraging. Furthermore, reverse repurchase agreements involve the risks that (i) the interest income earned in the investment of the proceeds will be less than the interest expense, (ii) the market value of the securities retained in lieu of sale by the Fund may decline below the price of the securities the Fund has sold but is obligated to repurchase, (iii) the market value of the securities sold will decline below the price at which the Fund is required to repurchase them and (iv) the securities will not be returned to the Fund. All forms of borrowing (including reverse repurchase agreements) are limited in the aggregate and may not exceed 33⅓% of the Fund's total assets, except as permitted by law or SEC requirements.

The Fund may enter into dollar rolls in which the Fund sells securities for delivery in the current month and simultaneously contracts to repurchase substantially similar (same type and coupon) securities on a specified future date. The Fund is compensated by the difference between the current sales price and the lower forward price for the future purchase (often referred to as the "drop") as well as by the interest earned on the cash proceeds of the initial sale.

In addition, the use of leverage may cause the Fund to liquidate portfolio positions when it may not be advantageous to do so to satisfy its obligations. Leverage, including borrowing, may cause the Fund to be more volatile than if the Fund had not been leveraged. This is because leverage tends to exaggerate the effect of any increase or decrease in the value of the Fund's portfolio securities.

**Loans of Portfolio Securities.** The Fund may lend its portfolio securities to brokers, dealers, banks and other institutional investors. By lending its portfolio securities, the Fund attempts to increase its net investment income through the receipt of interest on the cash collateral with respect to the loan or fees received from the borrower in connection with the loan. Any gain or loss in the market price of the securities loaned that might occur during the term of the loan would be for the account of the Fund. The Fund employs an agent to implement the securities lending program and the agent receives a fee from the Fund for its services. The Fund will not lend more than 33⅓% of the value of its total assets.

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The Fund may lend its portfolio securities so long as the terms, structure and the aggregate amount of such loans are not inconsistent with the 1940 Act or the rules and regulations or interpretations of the SEC thereunder, which currently require that (i) the borrower pledge and maintain with the Fund collateral consisting of liquid, unencumbered assets having a value not less than 100% of the value of the securities loaned; (ii) the borrower adds to such collateral whenever the price of the securities loaned rises (i.e., the borrower "marks-to-market" on a daily basis); (iii) the loan be made subject to termination by the Fund at any time; and (iv) the Fund receives a reasonable return on the loan (which may include the Fund investing any cash collateral in interest bearing short-term investments), any distributions on the loaned securities and any increase in their market value. In addition, voting rights may pass with the loaned securities, but the Fund will retain the right to call any security in anticipation of a vote that the Adviser deems material to the security on loan.

Loans of securities involve a risk that the borrower may fail to return the securities or may fail to maintain the proper amount of collateral, which may result in a loss of money by the Fund. There may be risks of delay and costs involved in recovery of securities or even loss of rights in the collateral should the borrower of the securities fail financially. These delays and costs could be greater for foreign securities. However, loans will be made only to borrowers deemed by the Adviser to be creditworthy and when, in the judgment of the Adviser, the income that can be earned from such securities loans justifies the attendant risk. All relevant facts and circumstances, including the creditworthiness of the broker, dealer, bank or institution, will be considered in making decisions with respect to the lending of securities, subject to review by the Fund's Board of Trustees. The Fund also bears the risk that the reinvestment of collateral will result in a principal loss. Finally, there is the risk that the price of the securities will increase while they are on loan and the collateral will not be adequate to cover their value.

**Borrowing.** The Fund has an operating policy, which may be changed by the Fund's Board of Trustees, not to borrow except from a bank for temporary or emergency purposes in amounts not exceeding 5% (taken at the lower of cost or current value) of its total assets (not including the amount borrowed). Should the Board of Trustees remove this operating policy, the Fund would be permitted to borrow money from banks in accordance with the 1940 Act or the rules and regulations promulgated by the SEC thereunder. Currently, the 1940 Act permits a fund to borrow money from banks in an amount up to 331/3% of its total assets (including the amount borrowed) less its liabilities (not including any borrowings but including the fair market value at the time of computation of any other senior securities then outstanding). The Fund may also borrow an additional 5% of its total assets without regard to the foregoing limitation for temporary purposes such as clearance of portfolio transactions. The Fund will only borrow when the Adviser believes that such borrowings will benefit the Fund after taking into account considerations such as interest income and possible gains or losses upon liquidation. The Fund will maintain asset coverage in accordance with the 1940 Act.

Borrowing by the Fund creates an opportunity for increased net income but, at the same time, creates special risks. For example, leveraging may exaggerate changes in and increase the volatility of the NAV of the Fund. This is because leverage tends to exaggerate the effect of any increase or decrease in the value of the Fund's portfolio securities. The use of leverage also may cause the Fund to liquidate portfolio positions when it may not be advantageous to do so in order to satisfy its obligations or to maintain asset coverage.

In general, the Fund may not issue any class of senior security, except that the Fund may (i) borrow from banks, provided that immediately following any such borrowing there is an asset coverage of at least 300% for all Fund borrowings and in the event such asset coverage falls below 300% the Fund will within three days or such longer period as the SEC may prescribe by rules and regulations, reduce the amount of its borrowings to an extent that the asset coverage of such borrowings shall be at least 300%, and (ii) engage in trading practices that involve the issuance of a senior security, including but not limited to options, futures, forward contracts and reverse repurchase agreements in accordance with applicable SEC requirements. The borrowings subject to these limits include borrowings through reverse repurchase agreements and similar financing transactions unless the Fund has elected to treat all such transactions as derivatives transactions under applicable SEC requirements.

**When-Issued and Delayed Delivery Securities, TBAs and Forward Commitments.** The Fund may purchase or sell securities on a when-issued or delayed delivery basis or may purchase or sell securities on a forward commitment basis. When these transactions are negotiated, the price is fixed at the time of the commitment, but delivery and payment can take place a month or more after the date of commitment. The Fund may sell the securities before the settlement date if it is deemed advisable. The securities so purchased or sold are subject to market fluctuation and no interest or dividends accrue to the purchaser prior to the settlement date. In addition, the Fund may invest in to-be-announced pass-through mortgage securities, which settle on a delayed delivery basis ("TBAs"). In a TBA transaction, the buyer and seller agree upon general trade parameters such as agency, settlement date, par amount, and price at the time the contract is entered into but the MBS are delivered in the future, generally 30 days later. Accordingly, the Fund's investments in TBAs are subject to risks such as failure of the counterparty to perform its obligation to deliver the security, the characteristics of a security delivered to the Fund may be less favorable than expected and the security the Fund buys will lose value prior to its delivery.

At the time the Fund makes the commitment to purchase or sell securities on a when-issued, delayed delivery or forward commitment basis, it will record the transaction and thereafter reflect the value, each day, of such security purchased, or if a sale, the proceeds to be received, in determining its NAV. At the time of delivery of the securities, their value may be more or less than the

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purchase or sale price. An increase in the percentage of the Fund's assets committed to the purchase of securities on a when-issued, delayed delivery or forward commitment basis may increase the volatility of its NAV.

**Non-Publicly Traded Securities, Private Placements and Restricted Securities.** The Fund may invest in securities that are neither listed on a stock exchange nor traded OTC, including privately placed and restricted securities. Such unlisted securities may involve a higher degree of business and financial risk that can result in substantial losses. As a result of the absence of a public trading market for these securities, they may be less liquid than publicly traded securities. Although these securities may be resold in privately negotiated transactions, the prices realized from these sales could be less than those originally paid by the Fund or less than what may be considered the fair value of such securities. Furthermore, companies whose securities are not publicly traded may not be subject to the disclosure and other investor protection requirements which might be applicable if their securities were publicly traded. The illiquidity of the market, as well as the lack of publicly available information regarding these securities, may also adversely affect the ability of the Fund to arrive at a fair value for certain securities at certain times and could make it difficult for the Fund to sell certain securities. If such securities are required to be registered under the securities laws of one or more jurisdictions before being sold, the Fund may be required to bear the expenses of registration.

**Investment Company Securities.** Investment company securities are equity securities and include securities of other open-end, closed-end and unregistered investment companies, including foreign investment companies, hedge funds and ETFs. The Fund may, to the extent noted in the Fund's non-fundamental limitations, invest in investment company securities as may be permitted by (i) the 1940 Act; (ii) the rules and regulations promulgated by the SEC under the 1940 Act; or (iii) an exemption or other relief applicable to the Fund from provisions of the 1940 Act. The 1940 Act generally prohibits an investment company from acquiring more than 3% of the outstanding voting shares of an investment company and limits such investments to no more than 5% of the Fund's total assets in any one investment company and no more than 10% in any combination of investment companies. The 1940 Act also prohibits the Fund from acquiring in the aggregate more than 10% of the outstanding voting shares of any registered closed-end investment company. The Fund may invest in investment company securities of investment companies managed by the Adviser or its affiliates to the extent permitted under the 1940 Act or as otherwise authorized by the SEC. To the extent the Fund invests a portion of its assets in investment company securities, those assets will be subject to the risks of the purchased investment company's portfolio securities, and a shareholder in the Fund will bear not only their proportionate share of the expenses of the Fund, but also, indirectly the expenses of the purchased investment company.

*Money Market Funds.* To the extent permitted by applicable law, the Fund may invest all or some of its short term cash investments in any money market fund advised or managed by the Adviser or its affiliates. In connection with any such investments, the Fund, to the extent permitted by the 1940 Act, will pay its share of all expenses (other than advisory and administrative fees) of a money market fund in which it invests, which may result in the Fund bearing some additional expenses. The rules governing money market funds: (1) permit (and, under certain circumstances, require) certain money market funds to impose a "liquidity fee" (up to 2%), or a "redemption gate" that temporarily restricts redemptions from a money market fund, if weekly liquidity levels fall below the required regulatory threshold, and (2) require "institutional money market funds" to operate with a floating NAV per share rounded to a minimum of the fourth decimal place in the case of a fund with a $1.0000 share price or an equivalent or more precise level of accuracy for money market funds with a different share price (e.g., $10.000 per share, or $100.00 per share). These may affect the investment strategies, performance and operating expenses of money market funds. "Government money market funds," as defined under Rule 2a-7 of the 1940 Act, are exempt from these requirements, though such funds may choose to opt-in to the implementation of liquidity fees and redemption gates.

*Exchange-Traded Funds.* The Fund may invest in ETFs. Investments in ETFs are subject to a variety of risks, including risks of a direct investment in 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. In addition, the market value of the ETF shares may differ from their NAV because the supply and demand in the market for ETF shares at any point is not always identical to the supply and demand in the market for the underlying securities. Also, ETFs that track particular indices typically will be unable to match the performance of the index exactly due to, among other things, the ETF's operating expenses and transaction costs. ETFs typically incur fees that are separate from those fees incurred directly by the Fund. Therefore, as a shareholder in an ETF (as with other investment companies), the Fund would bear its ratable share of that entity's expenses. At the same time, the Fund would continue to pay its own investment management fees and other expenses. As a result, the Fund and its shareholders, in effect, will be absorbing fees at two levels with respect to investments in ETFs. Further, certain of the ETFs in which the Fund may invest are leveraged. Leveraged ETFs seek to deliver multiples of the performance of the index or other benchmark they track and use derivatives in an effort to amplify the returns of the underlying index or benchmark. While leveraged ETFs may offer the potential for greater return, the potential for loss and the speed at which losses can be realized also are greater. Most leveraged ETFs "reset" daily, meaning they are designed to achieve their stated objectives on a daily basis. Leveraged ETFs can deviate substantially from the performance of their underlying benchmark over longer periods of time, particularly in volatile periods. The more the Fund invests in such leveraged ETFs, the more this leverage will magnify any losses on those investments. Furthermore, disruptions in the markets for the securities underlying ETFs purchased or sold by the Fund could result in losses on the Fund's investment in ETFs.

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**High Yield Securities.** High yield securities are generally considered to include fixed-income securities rated below the four highest rating categories at the time of purchase (e.g., Ba through C by Moody's, or BB through D by S&P or Fitch) and unrated fixed-income securities considered by the Adviser to be of equivalent quality. High yield securities are not considered investment grade and are commonly referred to as "junk bonds" or high yield, high risk securities. Investment grade securities that the Fund holds may be downgraded to below investment grade by the rating agencies. If the Fund holds a security that is downgraded, the Fund may choose to retain the security.

While high yield securities offer higher yields, they also normally carry a high degree of credit risk and are considered speculative by the major credit rating agencies. High yield securities may be issued as a consequence of corporate restructuring or similar events. High yield securities are often issued by smaller, less creditworthy issuers, or by highly leveraged (indebted) issuers, that are generally less able than more established or less leveraged issuers to make scheduled payments of interest and principal. In comparison to investment grade securities, the price movement of these securities is influenced less by changes in interest rates and more by the financial and business position of the issuer. The values of high yield securities are more volatile and may react with greater sensitivity to market changes.

High yield securities are frequently ranked junior to claims by other creditors. If the issuer cannot meet its obligations, the senior obligations are generally paid off before the junior obligations, which will potentially limit the Fund's ability to fully recover principal or to receive interest payments when senior securities are in default. Thus, investors in high yield securities have a lower degree of protection with respect to principal and interest payments then do investors in higher rated securities. In addition, lower-rated securities frequently have call or redemption features that would permit an issuer to repurchase the security from the Fund. If a call were exercised by the issuer during a period of declining interest rates, the Fund likely would have to replace such called security with a lower yielding security, thus decreasing the net investment income to the Fund and any dividends to investors.

The secondary market for high yield securities is concentrated in relatively few market makers and is dominated by institutional investors, including mutual funds, insurance companies and other financial institutions. Accordingly, the secondary market for such securities is not as liquid as, and is more volatile than, the secondary market for higher-rated securities. Because high yield securities are less liquid, judgment may play a greater role in valuing certain of the Fund's securities than is the case with securities trading in a more liquid market. Also, future legislation may have a possible negative impact on the market for high yield, high risk securities.

The credit rating of a high yield security does not necessarily address its market value risk. Ratings and market value may change from time to time, positively or negatively, to reflect new developments regarding the issuer.

The high yield securities markets may react strongly to adverse news about an issuer or the economy, or to the perception or expectation of adverse news, whether or not it is based on fundamental analysis. Additionally, prices for high yield securities may be affected by legislative and regulatory developments. These developments could adversely affect the Fund's NAV and investment practices, the secondary market for high yield securities, the financial condition of issuers of these securities and the value and liquidity of outstanding high yield securities, especially in a thinly traded market.

**Regulatory and Legal Risk.** U.S. and non-U.S. governmental agencies and other regulators regularly implement additional regulations and legislators pass new laws that affect the investments held by the Fund, the strategies used by the Fund or the level of regulation or taxation applying to the Fund (such as regulations related to investments in derivatives and other transactions). These regulations and laws impact the investment strategies, performance, costs and operations of the Fund or taxation of shareholders.

**Special Risks Related to Cyber Security.** The Fund and its service providers are susceptible to cyber security risks that include, among other things, theft, unauthorized monitoring, release, misuse, loss, destruction or corruption of confidential and highly restricted data; denial of service attacks; unauthorized access to relevant systems; compromises to networks or devices that the Fund and its service providers use to service the Fund's operations; or operational disruption or failures in the physical infrastructure or operating systems that support the Fund and its service providers. Cyber attacks against or security breakdowns of the Fund or its service providers may adversely impact the Fund and its shareholders, potentially resulting in, among other things, financial losses; the inability of Fund shareholders to transact business and the Fund to process transactions; inability to calculate the Fund's NAV; violations of applicable privacy and other laws; regulatory fines, penalties, reputational damage, reimbursement or other compensation costs; and/or additional compliance costs. The Fund may incur additional costs for cyber security risk management and remediation purposes. In addition, cyber security risks may also impact issuers of securities in which the Fund invests, which may cause the Fund's investment in such issuers to lose value. There can be no assurance that the Fund or its service providers will not suffer losses relating to cyber attacks or other information security breaches in the future.

**LIBOR Discontinuance or Unavailability Risk.** The Fund's investments, payment obligations and financing terms may be based on floating rates, such as the London Interbank Offered Rates (collectively, "LIBOR"), Euro Interbank Offered Rate and other similar types of reference rates (each, a "Reference Rate"). These Reference Rates are generally intended to represent the rate at which contributing banks may obtain short-term borrowings from each other within certain financial markets. On July 27, 2017, the Chief Executive of the UK Financial Conduct Authority ("FCA"), which regulates LIBOR, announced that the FCA will no longer persuade nor require banks to submit rates for the calculation of LIBOR and certain other Reference Rates after 2021. Such

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announcement indicates that the continuation of LIBOR and other Reference Rates on the current basis cannot and will not be guaranteed after the end of 2021. On March 5, 2021, the FCA announced that LIBOR will either cease to be provided by any administrator, or no longer be representative for many LIBOR settings after December 31, 2021, and for the most widely used tenors of U.S. dollar LIBOR after June 30, 2023. In addition, in connection with supervisory guidance from regulators, many regulated entities have ceased to enter into new LIBOR-based contracts after January 1, 2022. These announcements and developments and any additional regulatory or market changes may have an adverse impact on the Fund or its investments.

Regulators and market participants are currently engaged in identifying successor Reference Rates ("Alternative Reference Rates"). Additionally, it is expected that market participants will focus on the transition mechanisms by which the Reference Rates in existing contracts or instruments may be amended, whether through marketwide protocols, fallback contractual provisions, bespoke negotiations or amendments or otherwise, in connection with the federal Adjustable Interest Rate (LIBOR) Act. Nonetheless, the termination of certain Reference Rates presents risks to the Fund. At this time, it is not possible to completely identify or predict the effect of any such changes, any establishment of Alternative Reference Rates or any other reforms to Reference Rates that may be enacted in the UK or elsewhere. The elimination of a Reference Rate or any other changes or reforms to the determination or supervision of Reference Rates could have an adverse impact on the market for or value of any securities or payments linked to those Reference Rates and other financial obligations held by the Fund or on its overall financial condition or results of operations. To identify a successor rate for US dollar LIBOR, the Alternative Reference Rates Committee ("ARRC"), a U.S.-based group convened by the Federal Reserve Board and the Federal Reserve Bank of New York, was formed. The ARRC has identified Secured Overnight Financing Rate ("SOFR") as its preferred alternative rate for LIBOR. SOFR is a measure of the cost of borrowing cash overnight, collateralized by the U.S. Treasury securities, and is based on directly observable U.S. Treasury backed repurchase transactions. It is expected that a substantial portion of future floating rate investments will be linked to SOFR or benchmark rates derived from SOFR. At this time, it is not possible to predict the effect of the transition to these benchmark rates.

The transition process might lead to increased volatility and illiquidity in markets that currently rely on Reference Rates to determine interest rates. It could also lead to a reduction in the value of some Reference Rate-based investments held by the Fund and reduce the effectiveness of new hedges placed against existing Reference Rate-based instruments. While market participants are endeavoring to minimize the economic impact of the transition from Reference Rates to Alternative Reference Rates, the transition away from LIBOR and certain other Reference Rates could, among other negative consequences:

■ Adversely impact the pricing, liquidity, value of, return on and trading for a broad array of financial products, including any Reference Rate-linked securities, loans and derivatives in which the Fund may invest;

■ Require extensive negotiations of and/or amendments to agreements and other documentation governing Reference Rate-linked investments products;

■ Lead to disputes, litigation or other actions with counterparties or portfolio companies regarding the interpretation and enforceability of "fallback" provisions that provide for an alternative reference rate in the event of Reference Rate unavailability; or

■ Cause the Fund to incur additional costs in relation to any of the above factors.

The risks associated with the above factors, including decreased liquidity, are heightened with respect to investments in Reference Rate-based products that do not include a fallback provision that addresses how interest rates will be determined if LIBOR and certain other Reference Rates stop being published. Even with some Reference Rate-based instruments that may contemplate a scenario where Reference Rates are no longer available by providing for an alternative rate-setting methodology and/or increased costs for certain Reference Rate-related instruments or financing transactions, there may be significant uncertainty regarding the effectiveness of any such alternative methodologies, resulting in prolonged adverse market conditions for the Fund. In many cases, in the event that an instrument falls back to an Alternative Reference Rate, the Alternative Reference Rate would not perform the same as the Reference Rate being replaced would have and may not include adjustments to such rates that are reflective of current economic circumstances or differences between such rate and LIBOR. Since the usefulness of LIBOR and certain other Reference Rates as benchmarks could deteriorate during the transition period, these effects could occur prior to June 2023 for those Reference Rates which are expected to be discontinued at that time. There also remains uncertainty and risk regarding the willingness and ability of issuers to include enhanced provisions in new and existing contracts or instruments. In addition, when a Reference Rate is discontinued, the Alternative Reference Rate may be lower than market expectations, which could have an adverse impact on the value of preferred and debt securities with floating or fixed-to-floating rate coupons. Various pieces of legislation, including recent federal legislation and laws enacted by the states of New York and Alabama, may affect the transition of LIBOR-based instruments as well by permitting trustees and calculation agents to transition instruments with no LIBOR transition language to an Alternative Reference Rate provided for in such legislation. Such pieces of legislation also include safe harbors from liability, which may limit the recourse the Fund may have if the Alternative Reference Rate does not fully compensate the Fund for the transition of an instrument from LIBOR. It is uncertain what impact any such legislation may have. In addition, any Alternative Reference Rate and any pricing adjustments imposed by a regulator or counterparties or otherwise may adversely affect the Fund's performance or NAV.

**ESG Investment Risk.** To the extent that the Fund considers environmental, social and governance ("ESG") criteria and application of related analyses when selecting investments, the Fund's performance may be affected depending on whether such investments are in or out of favor and relative to similar funds that do not adhere to such criteria or apply such analyses. A company's ESG practices or the Adviser's assessment of such may change over time. Additionally, the Fund's adherence to its ESG criteria and application of related analyses in connection with identifying and selecting investments may require subjective analysis and may be difficult if data about a particular company is limited. The Fund's consideration of ESG criteria may result in the Fund buying certain securities or forgoing opportunities to buy certain securities. The Fund's investments in certain companies may be susceptible to various factors that may impact its businesses or operations, including the effects of general economic conditions throughout the world, increased competition from other providers of services, unfavorable tax laws or accounting policies and high leverage.

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**Market and Geopolitical Risk.** The value of your investment in the Fund is based on the values of the Fund's investments. These values change daily due to economic and other events that affect markets generally, as well as those that affect particular regions, countries, industries, companies or governments. Price movements, sometimes called volatility, may be greater or less depending on the types of securities the Fund owns and the markets in which the securities trade. The increasing interconnectivity between global economies and financial markets increases the likelihood that events or conditions in one region or financial market may adversely impact issuers in a different country, region or financial market. Securities in the Fund's portfolio may underperform due to inflation (or expectations for inflation), interest rates, global demand for particular products or resources, natural disasters, pandemics, epidemics, terrorism, regulatory events and governmental or quasi-governmental actions. The occurrence of global events similar to those in recent years, such as terrorist attacks around the world, natural disasters, social and political discord or debt crises and downgrades, among others, may result in market volatility and may have long term effects on both the U.S. and global financial markets. The occurrence of such events may be sudden and unexpected, and it is difficult to predict when similar events affecting the U.S. or global financial markets may occur, the effects that such events may have and the duration of those effects. Any such event(s) could have a significant adverse impact on the value, liquidity and risk profile of the Fund's portfolio, as well as its ability to sell securities to meet redemptions. There is a risk that you may lose money by investing in the Fund.

Social, political, economic and other conditions and events, such as war, natural disasters, health emergencies (e.g., epidemics and pandemics), terrorism, conflicts may occur and could significantly impact issuers, industries, governments and other systems, including the financial markets. As global systems, economies and financial markets are increasingly interconnected, events that once had only local impact are now more likely to have regional or even global effects. Events that occur in one country, region or financial market will, more frequently, adversely impact issuers in other countries, regions or markets. These impacts can be exacerbated by failures of governments and societies to adequately respond to an emerging event or threat. These types of events quickly and significantly impact markets in the U.S. and across the globe leading to extreme market volatility and disruption. The extent and nature of the impact on supply chains or economies and markets from these events is unknown, particularly if a health emergency or other similar event, such as the COVID-19 (the "Coronavirus") outbreak, persists for an extended period of time. Social, political, economic and other conditions and events, such as natural disasters, health emergencies (e.g., epidemics and pandemics), terrorism, conflicts, social unrest, recessions, inflation, rapid interest rate changes and supply chain disruption could reduce consumer demand or economic output, result in market closures, travel restrictions or quarantines, and generally have a significant impact on the economies and financial markets and the Adviser's investment advisory activities and services of other service providers, which in turn could adversely affect the Fund's investments and other operations. The value of the Fund's investment may decrease as a result of such events, particularly if these events adversely impact the operations and effectiveness of the Adviser or key service providers or if these events disrupt systems and processes necessary or beneficial to the investment advisory or other activities on behalf the Fund.

Many countries have experienced outbreaks of infectious illnesses in recent decades, including swine flu, avian influenza, SARS and the Coronavirus, and may experience similar outbreaks in the future. For example, the Coronavirus outbreak has resulted in numerous deaths and the imposition of both local and more widespread "work from home" and other quarantine measures, border closures and other travel restrictions, causing social unrest and commercial disruption on a global scale and significant volatility in financial markets.

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The Coronavirus has had, and is expected to continue to have, a material adverse impact on local economies in the affected jurisdictions and also on the global economy, as cross border commercial activity and market sentiment are increasingly impacted by the Coronavirus and government and other measures seeking to contain its spread. The global impact of the Coronavirus has continued to evolve and has, at times, created disruption in supply chains, and adversely impacted a number of industries, including but not limited to retail, transportation, hospitality and entertainment. In addition to these developments having adverse consequences for certain companies and other issuers in which the Fund invests and the value of the Fund's investments therein, the operations of the Adviser (including those relating to the Fund) could be impacted adversely, including through quarantine measures and travel restrictions imposed on the Adviser's or service providers' personnel located in affected countries, regions or local areas, or any related health issues of such personnel. Any of the foregoing events could materially and adversely affect the Adviser's ability to source, manage and divest investments on behalf of the Fund and pursue the Fund's investment objectives and strategies. Similar consequences could arise with respect to other infectious diseases. Given the significant economic and financial market disruptions and general uncertainty associated with the Coronavirus pandemic, the valuation and performance of the Fund's investments may be impacted adversely.

In light of current market conditions, until recently interest rates and bond yields in the United States and many other countries were at or near historic lows, and in some cases, such rates and yields are negative. During periods of very low or negative interest rates, the Fund's susceptibility to interest rate risk (i.e., the risks associated with changes in interest rates) may be magnified, its yield and income may be diminished and its performance may be adversely affected (e.g., during periods of very low or negative interest rates, the Fund may be unable to maintain positive returns). These levels of interest rates (or negative interest rates) may magnify the risks associated with rising interest rates. Changing interest rates, including rates that fall below zero, may have unpredictable effects on markets, including market volatility and reduced liquidity, and may adversely affect the Fund's yield, income and performance.

Government and other public debt, including municipal obligations in which the Fund may invest, can be adversely affected by large and sudden changes in local and global economic conditions that result in increased debt levels. Although high levels of government and other public debt do not necessarily indicate or cause economic problems, high levels of debt may create certain systemic risks if sound debt management practices are not implemented. A high debt level may increase market pressures to meet an issuer's funding needs, which may increase borrowing costs and cause a government or public or municipal entity to issue additional debt, thereby increasing the risk of refinancing. A high debt level also raises concerns that the issuer may be unable or unwilling to repay the principal or interest on its debt, which may adversely impact instruments held by the Fund that rely on such payments. Governmental and quasi-governmental responses to certain economic or other conditions may lead to increasing government and other public debt, which heighten these risks. Unsustainable debt levels can lead to declines in the value of currency, and can prevent a government from implementing effective counter-cyclical fiscal policy during economic downturns, can generate or contribute to an economic downturn or cause other adverse economic or market developments, such as increases in inflation or volatility. Increasing government and other public debt may adversely affect issuers, obligors, guarantors or instruments across a variety of asset classes.

**Fund Policies/Investment Restrictions**

The investment objective, policies and restrictions listed below have been adopted by the Fund as fundamental policies. Under the 1940 Act, a fundamental policy may not be changed without the vote of a majority of the outstanding voting securities of the Fund. The 1940 Act defines a majority as the lesser of (a) 67% or more of the shares present at a meeting of shareholders, if the holders of 50% of the outstanding shares of the Fund are present or represented by proxy; or (b) more than 50% of the outstanding shares of the Fund. For purposes of the following restrictions: (i) all percentage limitations apply immediately after a purchase or initial investment, except in the case of borrowings; and (ii) any subsequent change in any applicable percentage resulting from market fluctuations or other changes in total or net assets does not require elimination of any security from the portfolio, except in the case of borrowing.

The Fund will:

1. Seek a high level of current income.

The Fund will not:

1. Invest in a manner inconsistent with its classification as a "diversified company" as provided by (i) the 1940 Act, as amended from time to time, (ii) the rules and regulations promulgated by the SEC under the 1940 Act, as amended from time to time, or (iii) an exemption or other relief applicable to the Fund from the provisions of the 1940 Act, as amended from time to time.

2. Borrow money, except the Fund may borrow money to the extent permitted by (i) the 1940 Act, as amended from time to time, (ii) the rules and regulations promulgated by the SEC under the 1940 Act, as amended from time to time, or (iii) an exemption or other relief applicable to the Fund from the provisions of the 1940 Act, as amended from time to time.

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

3. Make loans of money or property to any person, except (a) to the extent that securities or interests in which the Fund may invest are considered to be loans, (b) through the loan of portfolio securities, (c) by engaging in repurchase agreements, or (d) as may otherwise be permitted by (i) the 1940 Act, as amended from time to time, (ii) the rules and regulations promulgated by the SEC under the 1940 Act, as amended from time to time, or (iii) an exemption or other relief applicable to the Fund from the provision of the 1940 Act, as amended from time to time.

4. Purchase or sell physical commodities unless required as a result of ownership of securities or other instruments; provided that this restriction shall not prohibit the Fund from purchasing or selling options, futures contracts and related options thereon, forward contracts, swaps, caps, floors, collars and any other financial instruments or from investing in securities or other instruments backed by physical commodities or as otherwise permitted by (i) the 1940 Act, as amended from time to time, (ii) the rules and regulations promulgated by the SEC under the 1940 Act, as amended from time to time, or (iii) an exemption or other relief applicable to the Fund from the provisions of the 1940 Act, as amended from time to time.

5. Issue senior securities, except the Fund may issue senior securities to the extent permitted by (i) the 1940 Act, as amended from time to time, (ii) the rules and regulations promulgated by the SEC under the 1940 Act, as amended from time to time, or (iii) an exemption or other relief applicable to the Fund from the provisions of the 1940 Act, as amended from time to time.

6. Invest more than 25% of the value of its total assets in securities of issuers in any one industry, except that the Fund will concentrate in the mortgage-backed securities industry, which shall include agency and non-agency mortgage-backed securities. For the purposes of the foregoing concentration policy, obligations issued or guaranteed by the U.S. government or its agencies and instrumentalities that are not mortgage-backed securities shall not be considered part of any industry.

7. Purchase or sell real estate or interests therein, although the Fund may purchase securities of issuers which engage in real estate operations and securities secured by real estate or interests therein.

8. Engage in the underwriting of securities, except insofar as the Fund may be deemed an underwriter under the 1933 Act, in disposing of a portfolio security.

In addition, as nonfundamental policies, which can be changed with Board approval and without shareholder vote, the Fund will not:

1. Invest in other investment companies in reliance on Sections 12(d)(1)(F), 12(d)(1)(G) or 12(d)(1)(J) of the 1940 Act, as amended from time to time.

2. Make short sales of securities, except short sales against the box.

3. Invest its assets in the securities of any investment company except as may be permitted by (i) the 1940 Act, as amended from time to time; (ii) the rules and regulations promulgated by the SEC under the 1940 Act, as amended from time to time; or (iii) an exemption or other relief applicable to the Fund from the provisions of the 1940 Act, as amended from time to time.

The Fund has an operating policy, which may be changed by the Fund's Board of Trustees, not to borrow except from a bank for temporary or emergency purposes in amounts not exceeding 5% (taken at the lower of cost or current value) of its total assets (not including the amount borrowed).

Notwithstanding any other investment policy or restriction, the Fund may seek to achieve its investment objective by investing all or substantially all of its assets in another investment company having substantially the same investment objective and policies as the Fund.

The investment policies, limitations or practices of the Fund may not apply during periods of unusual or adverse market, economic, political or other conditions. Such market, economic, political or other conditions may include periods of abnormal or heightened market volatility, strained credit and/or liquidity conditions or increased governmental intervention in the markets or industries. During such periods, the Fund may not invest according to its principal investment strategies or in the manner in which its name may suggest, and may be subject to different and/or heightened risks. It is possible that such unusual or adverse conditions may continue for extended periods of time.

For purposes of policies adopted in accordance with Rule 35d-1 under the 1940 Act, the term "assets," as defined in Rule 35d-1 under the 1940 Act, means net assets plus the amount of any borrowings for investment purposes.

**Disclosure of Portfolio Holdings**

The Fund's Board of Trustees and the Adviser have adopted policies and procedures regarding disclosure of portfolio holdings (the "Policy"). Pursuant to the Policy, the Adviser may disclose information concerning Fund portfolio holdings only if such disclosure is consistent with the antifraud provisions of the federal securities laws and the Fund's and the Adviser's fiduciary duties to Fund shareholders. In no instance may the Adviser or the Fund receive compensation or any other consideration in connection with the disclosure of information about the portfolio securities of the Fund. Consideration includes any agreement to maintain assets in the

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Fund or in other investment companies or accounts managed by the Adviser or by any affiliated person of the Adviser. Non-public information concerning portfolio holdings may be divulged to third parties only when the Fund has a legitimate business purpose for doing so and the recipients of the information are subject to a duty of confidentiality. Under no circumstances shall current or prospective Fund shareholders receive non-public portfolio holdings information, except as described below.

The Fund makes available on its public website the following portfolio holdings information:

■ complete portfolio holdings information monthly, at least 15 calendar days after the end of each month; and

■ top 10 holdings monthly, at least 15 calendar days after the end of each month.

The Fund provides a complete schedule of portfolio holdings for the second and fourth fiscal quarters in its Semi-Annual and Annual Reports, and for the first and third fiscal quarters in its filings with the SEC as an exhibit to Form N-PORT. These portfolio holdings will be available on or about the date of this Statement of Additional Information on the Fund's public website, www.morganstanley.com/im/shareholderreports.

All other portfolio holdings information that has not been disseminated in a manner making it available generally as described above is non-public information for purposes of the Policy.

The Fund may make selective disclosure of non-public portfolio holdings information pursuant to certain exemptions set forth in the Policy. Third parties eligible for exemptions under the Policy and therefore eligible to receive such disclosures currently include clients/shareholders (such as redeeming shareholders in-kind), fund rating agencies, information exchange subscribers, proxy voting or advisory services, pricing services, consultants and analysts, portfolio analytics providers, transition managers and service providers, provided that the third party expressly agrees to maintain the disclosed information in confidence and not to trade portfolio securities or related derivative securities based on the non-public information. Non-public portfolio holdings information may not be disclosed to a third party pursuant to an exemption unless and until the third-party recipient has entered into a non-disclosure agreement with the Fund and the arrangement has been reviewed and approved, as set forth in the Policy and discussed below. In addition, persons who owe a duty of trust or confidence to the Fund or the Adviser may receive non-public portfolio holdings information without entering into a non-disclosure agreement. Currently, these persons include (i) the Fund's independent registered public accounting firm (as of the Fund's fiscal year-end and on an as-needed basis), (ii) counsel to the Fund (on an as-needed basis), (iii) counsel to the Independent Trustees (on an as-needed basis) and (iv) members of the Board of Trustees (on an as-needed basis). Subject to the terms and conditions of any agreement between the Adviser or the Fund and the third-party recipient, if these conditions for disclosure are satisfied, there shall be no restriction on the frequency with which Fund non-public portfolio holdings information is released, and no lag period shall apply (unless otherwise indicated below).

The Adviser may provide interest lists to broker-dealers who execute securities transactions for the Fund without entering into a non-disclosure agreement with the broker-dealers, provided that the interest list satisfies all of the following criteria: (1) the interest list must contain only the CUSIP numbers and/or ticker symbols of securities held in all registered management investment companies advised by the Adviser or any affiliate of the Adviser (the "Morgan Stanley Funds") on an aggregate, rather than a fund-by-fund basis; (2) the interest list will not disclose portfolio holdings on a fund-by-fund basis; (3) the interest list must not contain information about the number or value of shares owned by a specified Morgan Stanley Fund; (4) the interest list may identify the investment strategy, but not the particular Morgan Stanley Funds, to which the list relates; and (5) the interest list may not identify the portfolio manager or team members responsible for managing the Morgan Stanley Funds.

The Fund may discuss or otherwise disclose performance attribution analyses (i.e., mention the effects of having a particular security in the portfolio(s)) where such discussion is not contemporaneously made public, provided that the particular holding has been disclosed publicly or the information that includes such holding(s) has been made available to shareholders requesting such information. Additionally, any discussion of the analyses may not be more current than the date the holding was disclosed publicly or the information that includes such holding(s) has been made available to shareholders requesting such information.

Portfolio holdings information may be provided to broker-dealers, prime brokers, futures commission merchants, or similar providers in connection with the Fund's portfolio trading or operational processing activities; such entities generally need access to such information in the performance of their duties and responsibilities to fund service providers and are subject to a duty of confidentiality, including a duty not to trade on material non-public information, imposed by law or contract. Portfolio holdings information may also be provided to affiliates of Morgan Stanley Investment Management ("MSIM") pursuant to regulatory requirements or for legitimate business purposes, which may include risk management, or may be reported by the Fund's counterparties to certain global trade repositories pursuant to regulatory requirements.

The Adviser and/or the Fund currently have entered into ongoing arrangements regarding the selective disclosure of complete portfolio holdings information with the following parties:

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| | | |
|:---|:---|:---|
| **Name** | **Frequency<sup>1</sup>**  | **Lag Time** |
| **Service Providers** |  |  |
| State Street Bank and Trust Company | Daily basis | Daily |

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| | | |
|:---|:---|:---|
| **Name** | **Frequency** **<sup>1</sup>** | **Lag Time** |
| BlackRock Financial Management Inc. | Daily basis | <sup>2</sup>  |
| KellyCo Marketing | Monthly basis and Quarterly basis | Varying lag times after the date of the information |
| R.R. Donnelley & Sons Company | Monthly basis and Quarterly basis | Varying lag times after the date of the information |
| **Fund Rating Agencies** |  |  |
| Refinitiv Lipper | Monthly basis | Approximately six business days after month end |
| **Portfolio Analytics Providers** |  |  |
| Bloomberg Finance, L.P. | Daily basis | Daily |
| FactSet Research Systems Inc. | Daily basis | Daily |
| Abel Noser Solutions, LLC | Daily basis | Daily |

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1 Dissemination of portfolio holdings information to entities listed above may occur less frequently than indicated (or not at all).

2 Information will typically be provided on a real time basis or as soon thereafter as possible.

All disclosures of non-public portfolio holdings information made to third parties pursuant to the exemptions set forth in the Policy must be reviewed and approved by the Adviser, which will also determine from time-to-time whether such third parties should continue to receive portfolio holdings information.

The Adviser shall report quarterly to the Board of Trustees (or a designated committee thereof) at the next regularly scheduled meeting: (i) any material information concerning all parties receiving non-public portfolio holdings information pursuant to an exemption; and (ii) any new non-disclosure agreements entered into during the reporting period. Procedures to monitor the use of such non-public portfolio holdings information may include requiring annual certifications that the recipients have utilized such information only pursuant to the terms of the agreement between the recipient and the Adviser and, for those recipients receiving information electronically, acceptance of the information will constitute reaffirmation that the third party expressly agrees to maintain the disclosed information in confidence and not to trade portfolio securities based on the non-public information.

**MANAGEMENT OF THE FUND**

**Board of Trustees**

**General.** The Board of Trustees of the Fund oversees the management of the Fund, but does not itself manage the Fund. The Trustees review various services provided by or under the direction of the Adviser to ensure that the Fund's general investment policies and programs are properly carried out. The Trustees also conduct their review to ensure that administrative services are provided to the Fund in a satisfactory manner.

Under state law, the duties of the Trustees are generally characterized as a duty of loyalty and a duty of care. The duty of loyalty requires a Trustee to exercise his or her powers in the interest of the Fund and not the Trustee's own interest or the interest of another person or organization. A Trustee satisfies his or her duty of care by acting in good faith with the care of an ordinarily prudent person and in a manner the Trustee reasonably believes to be in the best interest of the Fund and its shareholders.

**Trustees and Officers.** The Board of the Fund consists of eleven Trustees. These same individuals also serve as directors or trustees for certain of the funds advised by the Adviser and Morgan Stanley AIP GP LP. None of the Trustees have an affiliation or business connection with the Adviser or any of its affiliated persons or own any stock or other securities issued by the Adviser's parent company, Morgan Stanley. These are the "non-interested" or "Independent" Trustees as defined under the 1940 Act.

**Board Structure and Oversight Function.** The Board's leadership structure features an Independent Trustee serving as Chairperson and the Board Committees described below. The Chairperson participates in the preparation of the agenda for meetings of the Board and the preparation of information to be presented to the Board with respect to matters to be acted upon by the Board. The Chairperson also presides at all meetings of the Board and is involved in discussions regarding matters pertaining to the oversight of the management of the Fund between meetings.

The Board of Trustees operates using a system of committees to facilitate the timely and efficient consideration of all matters of importance to the Trustees, the Fund and Fund stockholders, and to facilitate compliance with legal and regulatory requirements and oversight of the Fund's activities and associated risks. The Board of Trustees has established six standing committees: (1) Audit Committee, (2) Governance Committee, (3) Compliance and Insurance Committee, (4) Equity Investment Committee, (5) Fixed Income, Liquidity and Alternatives Investment Committee and (6) Risk Committee, which are each comprised exclusively of Independent Trustees. Each committee charter governs the scope of the committee's responsibilities with respect to the oversight of the Fund. The responsibilities of each committee, including their oversight responsibilities, are described further under the caption "Independent Trustees and the Committees."

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The Fund is subject to a number of risks, including investment, compliance, operational and valuation risk, among others. The Board of Trustees oversees these risks as part of its broader oversight of the Fund's affairs through various Board and committee activities. The Board has adopted, and periodically reviews, policies and procedures designed to address various risks to the Fund. In addition, appropriate personnel, including but not limited to the Fund's Chief Compliance Officer, members of the Fund's administration and accounting teams, representatives from the Fund's independent registered public accounting firm, the Fund's Treasurer, portfolio management personnel, risk management personnel and independent valuation and brokerage evaluation service providers, make regular reports regarding the Fund's activities and related risks to the Board of Trustees and the committees, as appropriate. These reports include, among others, quarterly performance reports, quarterly risk reports and discussions with members of the risk teams relating to each asset class. The Board's committee structure allows separate committees to focus on different aspects of risk and the potential impact of these risks on some or all of the funds in the complex and then report back to the full Board. In between regular meetings, Fund officers also communicate with the Trustees regarding material exceptions and items relevant to the Board's risk oversight function. The Board recognizes that it is not possible to identify all of the risks that may affect the Fund, and that it is not possible to develop processes and controls to eliminate all of the risks that may affect the Fund. Moreover, the Board recognizes that it may be necessary for the Fund to bear certain risks (such as investment risk) to achieve its investment objectives.

As needed between meetings of the Board, the Board or a specific committee receives and reviews reports relating to the Fund and engages in discussions with appropriate parties relating to the Fund's operations and related risks.

**Management Information**

**Trustees.** The Fund seeks as Trustees individuals of distinction and experience in business and finance, government service or academia. In determining that a particular Trustee was and continues to be qualified to serve as Trustee, the Board has considered a variety of criteria, none of which, in isolation, was controlling. Based on a review of the experience, qualifications, attributes or skills of each Trustee, including those enumerated in the table below, the Board has determined that each of the Trustees is qualified to serve as a Trustee of the Fund. In addition, the Board believes that, collectively, the Trustees have balanced and diverse experience, qualifications, attributes and skills that allow the Board to operate effectively in governing the Fund and protecting the interests of shareholders. Information about the Fund's Governance Committee and Board of Trustees nomination process is provided below under the caption "Independent Trustees and the Committees."

The Trustees of the Fund, their birth years, addresses, positions held, length of time served, their principal business occupations during the past five years and other relevant professional experience, the number of portfolios in the Fund Complex (described below) overseen by each Independent Trustee and other directorships, if any, held by the Trustees, are shown below (as of January 1, 2023). The Fund Complex includes all open-end and closed-end funds (including all of their portfolios) advised by the Adviser and any registered funds that have an adviser that is an affiliate of the Adviser (including, but not limited to, Morgan Stanley AIP GP LP) (the "Morgan Stanley AIP Funds").

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Name, Address and Birth Year** **of Independent Trustee** | **Position(s) Held with** **Registrant** | **Length of**<br>**Time**<br>**Served** **\*** | **Principal** **Occupation(s) During** **Past 5 Years and** **Other Relevant** **Professional** **Experience** | **Number of Funds**<br>**in Fund Complex** **Overseen by** **Independent Trustee** | **Other Directorships** **Held by Independent** **Trustee During Past 5** **Years** **\*\*** |
| Frank L. Bowman<br>c/o Perkins Coie LLP<br>Counsel to the<br>Independent Trustees<br>1155 Avenue of the Americas<br>22nd Floor<br>New York, NY 10036<br>Birth Year: 1944 | Trustee | Since August 2006 | President, Strategic Decisions, LLC (consulting) (since February 2009); Director or Trustee of various Morgan Stanley Funds (since August 2006); Chairperson of the Compliance and Insurance Committee (since October 2015); formerly, Chairperson of the Insurance Sub-Committee of the Compliance and Insurance Committee (2007-2015); served as President and Chief Executive Officer of the Nuclear Energy Institute (policy organization) (February 2005-November 2008); retired as Admiral, U.S. Navy after serving over 38 years on active duty including 8 years as Director of the Naval Nuclear Propulsion Program in the Department of the Navy and the U.S. Department of Energy (1996-2004); served as Chief of Naval Personnel (July 1994-September 1996) and on the Joint Staff as Director of Political Military Affairs (June 1992-July 1994); knighted as Honorary Knight Commander of the Most Excellent Order of the British Empire; awarded the Officier de l'Orde National du Mérite by the French Government; elected to the National Academy of Engineering (2009). | 83 | Director of Naval and Nuclear Technologies LLP; Director Emeritus of the Armed Services YMCA; Member of the National Security Advisory Council of the Center for U.S. Global Engagement and a former member of the CNA Military Advisory Board; Chairman of the Board of Trustees of Fairhaven United Methodist Church; Member of the Board of Advisors of the Dolphin Scholarship Foundation; Director of other various nonprofit organizations; formerly, Director of BP, plc (November 2010-May 2019). |

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Name, Address and Birth Year** **of Independent Trustee** | **Position(s) Held with** **Registrant** | **Length of**<br>**Time**<br>**Served** **\*** | **Principal** **Occupation(s) During** **Past 5 Years and** **Other Relevant** **Professional** **Experience** | **Number of Funds**<br>**in Fund Complex** **Overseen by** **Independent Trustee** | **Other Directorships** **Held by Independent** **Trustee During Past 5** **Years** **\*\*** |
| Frances L. Cashman<br>c/o Perkins Coie LLP<br>Counsel to the<br>Independent Trustees<br>1155 Avenue of the Americas<br>22nd Floor<br>New York, NY 10036<br>Birth Year: 1961 | Trustee | Since February 2022 | Chief Executive Officer, Asset Management Division, Delinian Ltd. (financial information) (May 2021-Present); Executive Vice President and various other roles, Legg Mason & Co. (asset management) (2010-2020); Managing Director, Stifel Nicolaus (2005-2010). | 84 | Trustee and Investment Committee Member, Georgia Tech Foundation (Since June 2019); Trustee and Chair of Marketing Committee, and Member of Investment Committee, Loyola Blakefield (Since September 2017); Trustee, MMI Gateway Foundation (since September 2017); Director and Investment Committee Member, Catholic Community Foundation Board (2012–2018); Director and Investment Committee Member, St. Ignatius Loyola Academy (2011-2017). |
| Kathleen A. Dennis<br>c/o Perkins Coie LLP<br>Counsel to the<br>Independent Trustees<br>1155 Avenue of the Americas<br>22nd Floor<br>New York, NY 10036<br>Birth Year: 1953 | Trustee | Since<br>August<br>2006 | Chairperson of the Governance Committee (since January 2021), Chairperson of the Liquidity and Alternatives Sub-Committee of the Investment Committee (2006-2020) and Director or Trustee of various Morgan Stanley Funds (since August 2006); President, Cedarwood Associates (mutual fund and investment management consulting) (since July 2006); formerly, Senior Managing Director of Victory Capital Management (1993-2006). | 83 | Board Member, University of Albany Foundation (2012-present); Board Member, Mutual Funds Directors Forum (2014-present); Director of various non-profit organizations. |

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Name, Address and Birth Year** **of Independent Trustee** | **Position(s) Held with** **Registrant** | **Length of**<br>**Time**<br>**Served** **\*** | **Principal** **Occupation(s) During** **Past 5 Years and** **Other Relevant** **Professional** **Experience** | **Number of Funds**<br>**in Fund Complex** **Overseen by** **Independent Trustee** | **Other Directorships** **Held by Independent** **Trustee During Past 5** **Years** **\*\*** |
| Nancy C. Everett<br>c/o Perkins Coie LLP<br>Counsel to the<br>Independent Trustees<br>1155 Avenue of the Americas<br>22nd Floor<br>New York, NY 10036<br>Birth Year: 1955 | Trustee | Since<br>January<br>2015 | Chairperson of the Equity Investment Committee (since January 2021); Director or Trustee of various Morgan Stanley Funds (since January 2015); Chief Executive Officer, Virginia Commonwealth University Investment Company (since November 2015); Owner, OBIR, LLC (institutional investment management consulting) (since June 2014); formerly, Managing Director, BlackRock, Inc. (February 2011-December 2013) and Chief Executive Officer, General Motors Asset Management (a/k/a Promark Global Advisors, Inc.) (June 2005-May 2010). | 84 | Formerly, Member of Virginia Commonwealth University School of Business Foundation (2005-2016); Member of Virginia Commonwealth University Board of Visitors (2013-2015); Member of Committee on Directors for Emerging Markets Growth Fund, Inc. (2007-2010); Chairperson of Performance Equity Management, LLC (2006-2010); and Chairperson, GMAM Absolute Return Strategies Fund, LLC (2006-2010). |
| Eddie A. Grier<br>c/o Perkins Coie LLP<br>Counsel to the<br>Independent Trustees<br>1155 Avenue of the Americas<br>22nd Floor<br>New York, NY 10036<br>Birth Year: 1955 | Trustee | Since February 2022 | Dean, Santa Clara University Leavey School of Business (since July 2021); Dean, Virginia Commonwealth University School of Business (2010-2021); President and various other roles, Walt Disney Company (entertainment and media) (1981-2010). | 84 | Director, Witt/Kieffer, Inc. (executive search) (since 2016); Director, NuStar GP, LLC (energy) (since August 2021); Director, Sonida Senior Living, Inc. (residential community operator) (2016-2021); Director, NVR, Inc. (homebuilding) (2013-2020); Director, Middleburg Trust Company (wealth management) (2014-2019); Director, Colonial Williamsburg Company (2012-2021); Regent, University of Massachusetts Global (since 2021); Director and Chair, ChildFund International (2012-2021); Trustee, Brandman University (2010-2021); Director, Richmond Forum (2012-2019). |

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|:---|:---|:---|:---|:---|:---|
| **Name, Address and Birth Year** **of Independent Trustee** | **Position(s) Held with** **Registrant** | **Length of**<br>**Time**<br>**Served** **\*** | **Principal** **Occupation(s) During** **Past 5 Years and** **Other Relevant** **Professional** **Experience** | **Number of Funds**<br>**in Fund Complex** **Overseen by** **Independent Trustee** | **Other Directorships** **Held by Independent** **Trustee During Past 5** **Years** **\*\*** |
| Jakki L. Haussler<br>c/o Perkins Coie LLP<br>Counsel to the<br>Independent Trustees<br>1155 Avenue of the Americas<br>22nd Floor<br>New York, NY 10036<br>Birth Year: 1957 | Trustee | Since<br>January<br>2015 | Chairperson of the Audit Committee (since January 2023) and Director or Trustee of various Morgan Stanley Funds (since January 2015); Chairman, Opus Capital Group (since 1996); formerly, Chief Executive Officer, Opus Capital Group (1996-2019); Director, Capvest Venture Fund, LP (May 2000-December 2011); Partner, Adena Ventures, LP (July 1999-December 2010); Director, The Victory Funds (February 2005-July 2008). | 84 | Director, Vertiv Holdings Co. (VRT) (since August 2022); Director of Cincinnati Bell Inc. and Member, Audit Committee and Chairman, Governance and Nominating Committee (2008-2021); Director of Service Corporation International and Member, Audit Committee and Investment Committee; Director, Barnes Group Inc. (since July 2021); Director of Northern Kentucky University Foundation and Member, Investment Committee; Member of Chase College of Law Center for Law and Entrepreneurship Board of Advisors; Director of Best Transport (2005-2019); Director of Chase College of Law Board of Visitors; formerly, Member, University of Cincinnati Foundation Investment Committee. |

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|:---|:---|:---|:---|:---|:---|
| **Name, Address and Birth Year** **of Independent Trustee** | **Position(s) Held with** **Registrant** | **Length of**<br>**Time**<br>**Served** **\*** | **Principal** **Occupation(s) During** **Past 5 Years and** **Other Relevant** **Professional** **Experience** | **Number of Funds**<br>**in Fund Complex** **Overseen by** **Independent Trustee** | **Other Directorships** **Held by Independent** **Trustee During Past 5** **Years** **\*\*** |
| Dr. Manuel H. Johnson<br>c/o Johnson Smick<br>International, Inc.<br>220 I Street, NE<br>Suite 200<br>Washington, D.C. 20002<br>Birth Year: 1949 | Trustee | Since<br>July 1991 | Senior Partner, Johnson Smick International, Inc. (consulting firm); Chairperson of the Fixed Income, Liquidity and Alternatives Investment Committee (since January 2021), Chairperson of the Investment Committee (2006-2020) and Director or Trustee of various Morgan Stanley Funds (since July 1991); Co-Chairman and a founder of the Group of Seven Council (G7C) (international economic commission); formerly, Chairperson of the Audit Committee (July 1991-September 2006); Vice Chairman of the Board of Governors of the Federal Reserve System and Assistant Secretary of the U.S. Treasury. | 83 | Director of NVR, Inc. (home construction). |
| Joseph J. Kearns<br>c/o Perkins Coie LLP<br>Counsel to the<br>Independent Trustees<br>1155 Avenue of the Americas<br>22nd Floor<br>New York, NY 10036<br>Birth Year: 1942 | Trustee | Since<br>August<br>1994 | Senior Adviser, Kearns & Associates LLC (investment consulting); Chairperson of the Audit Committee (2006-2022) and Director or Trustee of various Morgan Stanley Funds (since August 1994); formerly, Deputy Chairperson of the Audit Committee (July 2003-September 2006) and Chairperson of the Audit Committee of various Morgan Stanley Funds (since August 1994); CFO of the J. Paul Getty Trust (1982-1999). | 84 | Director, Rubicon Investments (since February 2019); Prior to August 2016, Director of Electro Rent Corporation (equipment leasing). Prior to December 31, 2013, Director of The Ford Family Foundation. |

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|:---|:---|:---|:---|:---|:---|
| **Name, Address and Birth Year** **of Independent Trustee** | **Position(s) Held with** **Registrant** | **Length of**<br>**Time**<br>**Served** **\*** | **Principal** **Occupation(s) During** **Past 5 Years and** **Other Relevant** **Professional** **Experience** | **Number of Funds**<br>**in Fund Complex** **Overseen by** **Independent Trustee** | **Other Directorships** **Held by Independent** **Trustee During Past 5** **Years** **\*\*** |
| Michael F. Klein<br>c/o Perkins Coie LLP<br>Counsel to the<br>Independent Trustees<br>1155 Avenue of the Americas<br>22nd Floor<br>New York, NY 10036<br>Birth Year: 1958 | Trustee | Since<br>August<br>2006 | Chairperson of the Risk Committee (since January 2021); Managing Director, Aetos Alternatives Management, LP (since March 2000); Co-President, Aetos Alternatives Management, LP (since January 2004) and Co-Chief Executive Officer of Aetos Alternatives Management, LP (since August 2013); Chairperson of the Fixed Income Sub-Committee of the Investment Committee (2006-2020) and Director or Trustee of various Morgan Stanley Funds (since August 2006); formerly, Managing Director, Morgan Stanley & Co. Inc. and Morgan Stanley Dean Witter Investment Management and President, various Morgan Stanley Funds (June 1998-March 2000); Principal, Morgan Stanley & Co. Inc. and Morgan Stanley Dean Witter Investment Management (August 1997-December 1999). | 83 | Director of certain investment funds managed or sponsored by Aetos Alternatives Management, LP; Director of Sanitized AG and Sanitized Marketing AG (specialty chemicals). |

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Name, Address and Birth Year** **of Independent Trustee** | **Position(s) Held with** **Registrant** | **Length of**<br>**Time**<br>**Served** **\*** | **Principal** **Occupation(s) During** **Past 5 Years and** **Other Relevant** **Professional** **Experience** | **Number of Funds**<br>**in Fund Complex** **Overseen by** **Independent Trustee** | **Other Directorships** **Held by Independent** **Trustee During Past 5** **Years** **\*\*** |
| Patricia A. Maleski<br>c/o Perkins Coie LLP<br>Counsel to the<br>Independent Trustees<br>1155 Avenue of the Americas<br>22nd Floor<br>New York, NY 10036<br>Birth Year: 1960 | Trustee | Since<br>January<br>2017 | Director or Trustee of various Morgan Stanley Funds (since January 2017); Managing Director, JPMorgan Asset Management (2004-2016); Oversight and Control Head of Fiduciary and Conflicts of Interest Program (2015-2016); Chief Control Officer—Global Asset Management (2013-2015); President, JPMorgan Funds (2010-2013); Chief Administrative Officer (2004-2013); various other positions including Treasurer and Board Liaison (since 2001). | 84 | Trustee (since January 2022) and Treasurer (since January 2023), Nutley Family Service Bureau, Inc. |
| W. Allen Reed<br>c/o Perkins Coie LLP<br>Counsel to the<br>Independent Trustees<br>1155 Avenue of the Americas<br>22nd Floor<br>New York, NY 10036<br>Birth Year: 1947 | Chair of the Board and Trustee | Chair of the Board since August 2020 and Trustee since August 2006 | Chair of the Boards of various Morgan Stanley Funds (since August 2020); Director or Trustee of various Morgan Stanley Funds (since August 2006); formerly, Vice Chair of the Boards of various Morgan Stanley Funds (January 2020-August 2020); President and Chief Executive Officer of General Motors Asset Management; Chairman and Chief Executive Officer of the GM Trust Bank and Corporate Vice President of General Motors Corporation (August 1994-December 2005). | 83 | Formerly, Director of Legg Mason, Inc. (2006-2019); and Director of the Auburn University Foundation (2010-2015). |

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\* This is the earliest date the Trustee began serving the Morgan Stanley Funds. Each Trustee serves an indefinite term, until his or her successor is elected.

\*\* This includes any directorships at public companies and registered investment companies held by the Trustee at any time during the past five years.

The executive officers of the Fund, their birth years, addresses, positions held, length of time served and their principal business occupations during the past five years are shown below (as of January 1, 2023).

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| **Name, Address and Birth** **Year of Executive Officer** | **Position(s) Held with** **Registrant** | **Length of Time** **Served** **\*** | **Principal Occupation(s) During Past 5 Years** |
| John H. Gernon<br>522 Fifth Avenue<br>New York, NY 10036<br>Birth Year: 1963 | President and Principal Executive Officer | Since September 2013 | President and Principal Executive Officer of the Equity and Fixed Income Funds and the Morgan Stanley AIP Funds (since September 2013) and the Liquidity Funds and various money market funds (since May 2014) in the Fund Complex; Managing Director of the Adviser. |

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|:---|:---|:---|:---|
| **Name, Address and Birth** **Year of Executive Officer** | **Position(s) Held with** **Registrant** | **Length of Time** **Served** **\*** | **Principal Occupation(s) During Past 5 Years** |
| Deidre A. Downes<br>1633 Broadway<br>New York, NY 10019<br>Birth Year: 1977 | Chief Compliance Officer | Since November 2021 | Executive Director of the Adviser (since January 2021) and Chief Compliance officer of various Morgan Stanley Funds (since November 2021). Formerly, Vice President and Corporate Counsel at PGIM and Prudential Financial (October 2016 – December 2020). |
| Francis J. Smith<br>522 Fifth Avenue<br>New York, NY 10036<br>Birth Year: 1965 | Treasurer and Principal Financial Officer | Treasurer since July 2003 and Principal Financial Officer since September 2002 | Managing Director of the Adviser and various entities affiliated with the Adviser; Treasurer (since July 2003) and Principal Financial Officer of various Morgan Stanley Funds (since September 2002). |
| Mary E. Mullin<br>1633 Broadway<br>New York, NY 10019<br>Birth Year: 1967 | Secretary | Since June 1999 | Managing Director of the Adviser; Secretary of various Morgan Stanley Funds (since June 1999). |
| Michael J. Key<br>522 Fifth Avenue<br>New York, NY 10036<br>Birth Year: 1979 | Vice President | Since June 2017 | Vice President of the Equity and Fixed Income Funds, Liquidity Funds, various money market funds and the Morgan Stanley AIP Funds in the Fund Complex (since June 2017); Managing Director of the Adviser; Head of Product Development for Equity and Fixed Income Funds (since August 2013). |

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\* This is the earliest date the officer began serving the Morgan Stanley Funds. Each officer serves a one-year term, until his or her successor is elected and has qualified.

In addition, the following individuals who are officers of the Adviser or its affiliates serve as assistant secretaries of the Fund: Nicholas Di Lorenzo, Princess Kludjeson, Francesca Mead, Sydney A. Walker and Jill R. Whitelaw.

It is a policy of the Fund's Board that each Trustee shall invest in any combination of the Morgan Stanley Funds that the Trustee determines meets his or her own specific investment objectives, without requiring any specific investment in any particular Fund.

For each Trustee, the dollar range of equity securities beneficially owned by the Trustee in the Fund and in the Family of Investment Companies (Family of Investment Companies includes all of the registered investment companies advised by the Adviser and Morgan Stanley AIP GP LP) for the calendar year ended December 31, 2022 is set forth in the table below.

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| | | |
|:---|:---|:---|
| **Name of Trustee** | **Dollar Range of Equity Securities in the Fund (as** **of December 31, 2022)** | **Aggregate Dollar Range of Equity Securities in All** **Registered Investment Companies Overseen by** **Trustee in Family of Investment Companies (as of** **December 31, 2022)** |
| **Independent:** |  |  |
| Frank L. Bowman |  | over $100,000 |
| Frances L. Cashman<sup>1</sup>  |  |  |
| Kathleen A. Dennis |  | over $100,000 |
| Nancy C. Everett |  | over $100,000 |
| Eddie A. Grier<sup>1</sup>  |  |  |
| Jakki L. Haussler |  | over $100,000 |
| Manuel H. Johnson |  | over $100,000 |
| Joseph J. Kearns<sup>2</sup>  |  | over $100,000 |
| Michael F. Klein<sup>2</sup>  |  | over $100,000 |
| Patricia A. Maleski |  | over $100,000 |
| W. Allen Reed<sup>2</sup>  |  | over $100,000 |

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1 Ms. Cashman and Mr. Grier became members of the Advisory Board of the Board of Trustees on January 1, 2022 and Trustees on February 25, 2022.

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|:---|:---|
| 2 | Includes the total amount of compensation deferred by the Trustee at his election pursuant to a deferred compensation plan. Such deferred compensation is placed in a deferral account and deemed to be invested in one or more of the Morgan Stanley Funds (or portfolio thereof) that are offered as investment options under the plan. |

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As to each Independent Trustee and his or her immediate family members, no person owned beneficially or of record securities of an investment adviser or principal underwriter of the Fund, or a person (other than a registered investment company) directly or indirectly controlling, controlled by or under common control with an investment adviser or principal underwriter of the Fund.

As of February 1, 2023, the Trustees and Officers of the Trust, as a group, owned less than 1% of any class of the outstanding shares of beneficial interest of the Fund.

Law and regulation establish both general guidelines and specific duties for the Independent Trustees. The Board has six committees: (1) Audit Committee, (2) Governance Committee, (3) Compliance and Insurance Committee, (4) Equity Investment Committee, (5) Fixed Income, Liquidity and Alternatives Investment Committee and (6) Risk Committee.

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The Independent Trustees are charged with recommending to the full Board approval of management, advisory and administration contracts, Rule 12b-1 plans and distribution and underwriting agreements; continually reviewing fund performance, checking on the pricing of portfolio securities, brokerage commissions, transfer agent costs and performance and trading among funds in the same complex; and approving fidelity bond and related insurance coverage and allocations, as well as other matters that arise from time to time. The Independent Trustees are required to select and nominate individuals to fill any Independent Trustee vacancy on the board of any fund that has a Rule 12b-1 plan of distribution. Most of the retail Morgan Stanley Funds have a Rule 12b-1 plan.

The Board of Trustees has a separately-designated standing Audit Committee established in accordance with Section 3(a)(58)(A) of the Securities Exchange Act of 1934, as amended (the "1934 Act"). The Audit Committee is charged with recommending to the full Board the engagement or discharge of the Fund's independent registered public accounting firm; directing investigations into matters within the scope of the independent registered public accounting firm's duties, including the power to retain outside specialists; reviewing with the independent registered public accounting firm the audit plan and results of the auditing engagement; approving professional services provided by the independent registered public accounting firm and other accounting firms prior to the performance of the services; reviewing the independence of the independent registered public accounting firm; considering the range of audit and non-audit fees; reviewing the adequacy of the Fund's system of internal controls and reviewing the valuation process. The Fund has adopted a formal, written Audit Committee Charter.

The members of the Audit Committee of the Fund are Nancy C. Everett, Eddie A. Grier, Jakki L. Haussler and Joseph J. Kearns. None of the members of the Fund's Audit Committee is an "interested person," as defined under the 1940 Act, of the Fund (with such disinterested Trustees being "Independent Trustees" or individually, an "Independent Trustee"). Each Independent Trustee is also "independent" from the Fund under the listing standards of the NYSE. The Chairperson of the Audit Committee of the Fund is Jakki L. Haussler.

The Board of Trustees of the Fund also has a Governance Committee. The Governance Committee identifies individuals qualified to serve as Independent Trustees on the Fund's Board and on committees of the Board and recommends such qualified individuals for nomination by the Fund's Independent Trustees as candidates for election as Independent Trustees, advises the Fund's Board with respect to Board composition, procedures and committees, develops and recommends to the Fund's Board a set of corporate governance principles applicable to the Fund, monitors and makes recommendations on corporate governance matters and policies and procedures of the Fund's Board of Trustees and any Board committees and oversees periodic evaluations of the Fund's Board and its committees. The members of the Governance Committee of the Fund are Kathleen A. Dennis, Manuel H. Johnson, Michael F. Klein, Patricia A. Maleski and W. Allen Reed, each of whom is an Independent Trustee. In addition, W. Allen Reed (as Chair of the Morgan Stanley Funds) periodically may attend other operating Committee meetings. The Chairperson of the Governance Committee is Kathleen A. Dennis.

The Fund does not have a separate nominating committee. While the Fund's Governance Committee recommends qualified candidates for nominations as Independent Trustees, the Board of Trustees of the Fund believes that the task of nominating prospective Independent Trustees is important enough to require the participation of all current Independent Trustees, rather than a separate committee consisting of only certain Independent Trustees. Accordingly, all the Independent Trustees participate in the selection and nomination of candidates for election as Independent Trustees for the Fund. Persons recommended by the Fund's Governance Committee as candidates for nomination as Independent Trustees shall possess such experience, qualifications, attributes, skills and diversity so as to enhance the Board's ability to manage and direct the affairs and business of the Fund, including, when applicable, to enhance the ability of committees of the Board to fulfill their duties and/or to satisfy any independence requirements imposed by law, regulation or any listing requirements of the NYSE. While the Independent Trustees of the Fund expect to be able to continue to identify from their own resources an ample number of qualified candidates for the Fund's Board as they deem appropriate, they will consider nominations from shareholders to the Board. Nominations from shareholders should be in writing and sent to the Independent Trustees as described below under the caption "Shareholder Communications."

The Board formed the Compliance and Insurance Committee to address insurance coverage and oversee the compliance function for the Fund and the Board. The Compliance and Insurance Committee consists of Frank L. Bowman, Kathleen A. Dennis and Patricia A. Maleski, each of whom is an Independent Trustee. The Chairperson of the Compliance and Insurance Committee is Frank L. Bowman.

The Equity Investment Committee and the Fixed Income, Liquidity and Alternatives Investment Committees oversee the Fund's portfolio investment process and review the performance of the Fund's investments. The Equity Investment Committee and the Fixed Income, Liquidity and Alternatives Investment Committees also recommend to the Board to approve or renew the Fund's Investment Advisory and Administration Agreements. Each Investment Committee focuses on the Fund's primary areas of investment, namely equities, fixed income, liquidity and alternatives. Kathleen A. Dennis, Nancy C. Everett, Eddie A. Grier, Jakki L. Haussler and Michael F. Klein are members of the Equity Investment Committee. The Chairperson of the Equity Investment Committee is Nancy C. Everett. Frank L. Bowman, Frances L. Cashman, Manuel H. Johnson, Joseph J. Kearns and Patricia A. Maleski are members of the Fixed Income, Liquidity and Alternatives Investment Committee. The Chairperson of the Fixed Income, Liquidity and Alternatives Investment Committee is Manuel H. Johnson.

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The Risk Committee assists the Board in connection with the oversight of the Fund's risks, including investment risks, operational risks and risks posed by the Fund's service providers as well as the effectiveness of the guidelines, policies and processes for monitoring and mitigating such risks. The members of the Risk Committee of the Fund are Frances L. Cashman, Manuel H. Johnson, Michael F. Klein and W. Allen Reed, each of whom is an Independent Trustee. The Chairperson of the Risk Committee is Michael F. Klein.

During the Fund's fiscal year ended October 31, 2022, the Board of Trustees held the following meetings:

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| | |
|:---|:---|
| **Board of Trustees/Committee** | **Number of Meetings** |
| Board of Trustees | 6 |
| Audit Committee | 4 |
| Governance Committee | 4 |
| Compliance and Insurance Committee | 4 |
| Equity Investment Committee | 5 |
| Fixed Income, Liquidity and Alternatives Investment Committee | 5 |
| Risk Committee | 4 |

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**Experience, Qualifications and Attributes**

The Board has concluded, based on each Trustee's experience, qualifications and attributes that each Board member should serve as a Trustee. Following is a brief summary of the information that led to and/or supports this conclusion.

Mr. Bowman has experience in a variety of business and financial matters through his prior service as a Director or Trustee for various funds in the Fund Complex, where he serves as Chairperson of the Compliance and Insurance Committee (and formerly served as Chairperson of the Insurance Sub-Committee of the Compliance and Insurance Committee). Mr. Bowman also serves as a Director of Naval and Nuclear Technologies LLP and Director Emeritus for the Armed Services YMCA, and formerly served as a Director of BP, plc. Mr. Bowman serves as a Chairman of the Board of Trustees of the Fairhaven United Methodist Church. Mr. Bowman is also a member of the National Security Advisory Council of the Center for U.S. Global Engagement, a former member of the CNA Military Advisory Board and a member of the Dolphin Scholarship Foundation Advisory Board. Mr. Bowman retired as an Admiral in the U.S. Navy after serving over 38 years on active duty including eight years as Director of the Naval Nuclear Propulsion Program in the Department of the Navy and the U.S. Department of Energy (1996-2004). Additionally, Mr. Bowman served as the U.S. Navy's Chief of Naval Personnel (1994-1996) where he was responsible for the planning and programming of all manpower, personnel, training and education resources for the U.S. Navy, and on the Joint Staff as Director of Political Military Affairs (1992-1994). In addition, Mr. Bowman served as President and Chief Executive Officer of the Nuclear Energy Institute. Mr. Bowman has received such distinctions as a knighthood as Honorary Knight Commander of the Most Excellent Order of the British Empire and the Officier de l'Orde National du Mérite from the French Government, and was elected to the National Academy of Engineering (2009). He is President of the consulting firm Strategic Decisions, LLC.

With more than 30 years of experience in the financial services industry, Ms. Cashman possesses valuable insights and expertise regarding governance, marketing, communications, and strategy. Ms. Cashman is Chief Executive Officer of the Asset Management Division of Delinian Ltd. Prior to that, Ms. Cashman spent over 20 years at Legg Mason & Co., ultimately serving as Executive Vice President and Global Head of Marketing and Communications. She has gained valuable experience as Director of two investment management entities and as a distribution leader reporting to boards of other mutual funds. In addition, Ms. Cashman also serves as Trustee for the Georgia Tech Foundation and the MMI Gateway Foundation.

Ms. Dennis has over 25 years of business experience in the financial services industry and related fields including serving as a Director or Trustee of various other funds in the Fund Complex, where she serves as Chairperson of the Governance Committee. Ms. Dennis possesses a strong understanding of the regulatory framework under which investment companies must operate based on her years of service to this Board and her position as Senior Managing Director of Victory Capital Management.

Ms. Everett has over 35 years of experience in the financial services industry, including roles with both registered investment companies and registered investment advisers. Ms. Everett serves as the Chairperson of the Equity Investment Committee. By serving on the boards of other registered funds, such as GMAM Absolute Return Strategies Fund, LLC and Emerging Markets Growth Fund, Inc., Ms. Everett has acquired significant experience with financial, accounting, investment and regulatory matters. Ms. Everett is also a Chartered Financial Analyst.

During the course of a career spanning more than 40 years in both academia and industry, Mr. Grier has gained substantial experience in management, operations, finance, marketing, and oversight. Mr. Grier is the Dean of Santa Clara University's Leavey School of Business. Prior to that, Mr. Grier was the Dean of the Virginia Commonwealth University School of Business. Before joining academia, Mr. Grier spent 29 years at the Walt Disney Company where he served in various leadership roles, including as President of the Disneyland Resort. Mr. Grier also gained substantial oversight experience serving on the boards of Sonia Senior Living, Inc. (formerly, Capital Senior Living Corporation), NVR, Inc., and Middleburg Trust Company. In addition, Mr. Grier

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currently serves as a Director of Witt/Kieffer, Inc., Director of NuStar GP, LLC, and Regent of University of Massachusetts Global. Mr. Grier is also a Certified Public Accountant.

With more than 30 years of experience in the financial services industry, including her years of entrepreneurial and managerial experience in the development and growth of Opus Capital Group, Ms. Haussler brings a valuable perspective to the Fund's Board, where she serves as the Chairperson of the Audit Committee. Through her role at Opus Capital and her service as a director of several venture capital funds and other boards, Ms. Haussler has gained valuable experience dealing with accounting principles and evaluating financial results of large corporations. She is a certified public accountant (inactive) and a licensed attorney in the State of Ohio (inactive). The Board has determined that Ms. Haussler is an "audit committee financial expert" as defined by the SEC.

In addition to his tenure as a Director or Trustee of various other funds in the Fund Complex, where he currently serves as the Chairperson of the Fixed Income, Liquidity and Alternatives Investment Committee and formerly served as Chairperson of the Audit Committee, Dr. Johnson has also served as an officer or a board member of numerous companies for over 20 years. These positions included Co-Chairman and a founder of the Group of Seven Council, Director of NVR, Inc., Director of Evergreen Energy and Director of Greenwich Capital Holdings. He also has served as Vice Chairman of the Board of Governors of the Federal Reserve System and Assistant Secretary of the U.S. Treasury. In addition, Dr. Johnson also served as Chairman of the Financial Accounting Foundation, which oversees the Financial Accounting Standards Board, for seven years.

Mr. Kearns gained extensive experience regarding accounting through his experience on the Audit Committees of the boards of other funds in the Fund Complex, including by previously serving as either Chairperson or Deputy Chairperson of the Audit Committee for nearly 20 years, and through his position as Chief Financial Officer of the J. Paul Getty Trust. He also has experience in financial, accounting, investment and regulatory matters through his position as President and founder of Kearns & Associates LLC, a financial consulting company. Mr. Kearns previously served as a Director of Electro Rent Corporation and previously served as Director of The Ford Family Foundation.

Through his prior positions as a Managing Director of Morgan Stanley & Co. Inc. and Morgan Stanley Dean Witter Investment Management and as President and a Trustee of the Morgan Stanley Institutional Funds, Mr. Klein has experience in the management and operation of registered investment companies, enabling him to provide management input and investment guidance to the Board. Mr. Klein is the Chairperson of the Risk Committee. Mr. Klein also has extensive experience in the investment management industry based on his current positions as Managing Director and Co-Chief Executive and Co-President of Aetos Alternatives Management, LP and as a Director of certain investment funds managed or sponsored by Aetos Alternatives Management, LP. In addition, he also has experience as a member of the board of other funds in the Fund Complex.

Ms. Maleski has over 30 years of experience in the financial services industry and extensive experience with registered investment companies. Ms. Maleski began her career as a certified public accountant at Price Waterhouse LLP ("PW") and was a member of PW's Investment Company Practice. After a brief stint at the Bank of New York, Ms. Maleski began her affiliation with the JPMorgan Funds, at the Pierpont Group, and then with J.P. Morgan Investment Management Inc. From 2001-2013, Ms. Maleski held roles with increasing responsibilities, from Vice President and Board Liaison, Treasurer and Principal Financial Officer, Chief Administrative Officer and finally President and Principal Executive Officer for the JPMorgan Fund complex. Between 2013 and 2016, Ms. Maleski served as Global Head of Oversight and Control of JPMorgan Asset Management and then as Head of JPMorgan Chase's Fiduciary and Conflicts of Interest Program. Ms. Maleski has extensive experience in the management and operation of funds in addition to regulatory and accounting and valuation matters.

Mr. Reed has experience on investment company boards and is experienced with financial, accounting, investment and regulatory matters through his prior service as a Director of iShares Inc. and his service as Chair of the Board and as Trustee or Director of other funds in the Fund Complex. Mr. Reed also gained substantial experience in the financial services industry through his prior positions as a Director of Legg Mason, Inc. and as President and CEO of General Motors Asset Management.

The Trustees' principal occupations and other relevant professional experience during the past five years or more are shown in the above tables.

The Board has adopted a policy that Board members are expected to retire no later than the end of the year they reach the age of 78. The Governance Committee has discretion to grant waivers from this retirement policy under special circumstances, including for Board members to continue serving in Chair or Chair-related roles beyond the retirement age. Current Board members who reached the age of 75 as of January 1, 2021, are grandfathered as exceptions to the retirement policy and may continue to serve on the Board until the end of the year in which they turn 80 years of age.

**Advantages of Having the Same Individuals as Trustees for the Morgan Stanley Funds.** The Independent Trustees and the Fund's management believe that having the same Independent Trustees for each of the Morgan Stanley Funds avoids the duplication of effort that would arise from having different groups of individuals serving as Independent Trustees for each of the funds or even of sub-groups of funds. They believe that having the same individuals serve as Independent Trustees of all the Morgan Stanley Funds tends to increase their knowledge and expertise regarding matters which affect the Fund Complex generally and enhances their ability

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to negotiate on behalf of each fund with the fund's service providers. This arrangement also precludes the possibility of separate groups of Independent Trustees arriving at conflicting decisions regarding operations and management of the funds and avoids the cost and confusion that would likely ensue. Finally, having the same Independent Trustees serve on all fund boards enhances the ability of each fund to obtain, at modest cost to each separate fund, the services of Independent Trustees of the caliber, experience and business acumen of the individuals who serve as Independent Trustees of the Morgan Stanley Funds.

**Trustee and Officer Indemnification.** The Fund's Declaration of Trust provides that no Trustee, officer, employee or agent of the Fund is liable to the Fund or to a shareholder, nor is any Trustee, officer, employee or agent liable to any third persons in connection with the affairs of the Fund, except as such liability may arise from his/her or its own bad faith, willful misfeasance, gross negligence or reckless disregard of his/her or its duties. It also provides that all third persons shall look solely to Fund property for satisfaction of claims arising in connection with the affairs of the Fund. With the exceptions stated, the Declaration of Trust provides that a Trustee, officer, employee or agent is entitled to be indemnified against all liability in connection with the affairs of the Fund.

**Shareholder Communications.** Shareholders may send communications to the Fund's Board of Trustees. Shareholders should send communications intended for the Fund's Board by addressing the communications directly to the Board (or individual Board members) and/or otherwise clearly indicating in the salutation that the communication is for the Board (or individual Board members) and by sending the communication to either the Fund's office or directly to such Board member(s) at the address specified for each Trustee previously noted. Other shareholder communications received by the Fund not directly addressed and sent to the Board will be reviewed and generally responded to by management, and will be forwarded to the Board only at management's discretion based on the matters contained therein.

**Compensation**

Each Trustee (except for the Chair of the Boards) receives an annual retainer fee of $335,000 ($295,000 prior to January 1, 2023) for serving as a Trustee of the Morgan Stanley Funds.

The Audit Committee Chairperson receives an additional annual retainer fee of $80,000, the Risk Committee Chairperson, the Equity Investment Committee Chairperson, Fixed Income, Liquidity and Alternatives Investment Committee Chairperson and Governance Committee Chairperson each receive an additional annual retainer fee of $50,000 and the Compliance and Insurance Committee Chairperson receives an additional annual retainer fee of $65,000. The aggregate compensation paid to each Trustee is paid by the Morgan Stanley Funds, and is allocated on a pro rata basis among each of the operational funds of the Morgan Stanley Funds based on the relative net assets of each of the funds. The Chair of the Boards receives a total annual retainer fee of $630,000 ($590,000 prior to January 1, 2023) for his services and for administrative services provided to each Board.

The Fund also reimburses such Trustees for travel and other out-of-pocket expenses incurred by them in connection with attending such meetings. Trustees of the Fund who are employed by the Adviser receive no compensation or expense reimbursement from the Fund for their services as a Trustee.

Effective April 1, 2004, the Fund began a Deferred Compensation Plan (the "DC Plan"), which allows each Trustee to defer payment of all, or a portion, of the fees he or she receives for serving on the Board of Trustees throughout the year. Each eligible Trustee generally may elect to have the deferred amounts credited with a return equal to the total return on one or more of the Morgan Stanley Funds that are offered as investment options under the DC Plan. At the Trustee's election, distributions are either in one lump sum payment, or in the form of equal annual installments over a period of five years. The rights of an eligible Trustee and the beneficiaries to the amounts held under the DC Plan are unsecured and such amounts are subject to the claims of the creditors of the Fund.

Prior to April 1, 2004, the Fund maintained a similar Deferred Compensation Plan (the "Prior DC Plan"), which also allowed each Independent Trustee to defer payment of all, or a portion, of the fees he or she received for serving on the Board of Trustees throughout the year. Generally, the DC Plan amends and supersedes the Prior DC Plan and all amounts payable under the Prior DC Plan are now subject to the terms of the DC Plan (except for amounts paid during the calendar year 2004, which remain subject to the terms of the Prior DC Plan).

The following table shows aggregate compensation payable to each of the Fund's Trustees from the Fund for the fiscal year ended October 31, 2022 and the aggregate compensation payable to each of the Fund's Trustees by the Fund Complex (which includes all of the Morgan Stanley Funds) for the calendar year ended December 31, 2022.

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| | | |
|:---|:---|:---|
| **Compensation<sup>1</sup>**  | **Compensation<sup>1</sup>**  | **Compensation<sup>1</sup>**  |
| **Name of Independent Trustee:** | **Aggregate** **Compensation From** **the Fund<sup>2</sup>**  | **Total Compensation** **From Fund and** **Fund Complex Paid** **to Trustee<sup>3</sup>**  |
| Frank L. Bowman | $191 | $360000 |
| Frances L. Cashman<sup>4</sup>  | 156 | 295000 |
| Kathleen A. Dennis | 183 | 345000 |
| Nancy C. Everett | 182 | 345000 |
| Eddie A. Grier<sup>4</sup>  | 156 | 295000 |
| Jakki L. Haussler | 156 | 295000 |
| Manuel H. Johnson | 183 | 345000 |
| Joseph J. Kearns<sup>2</sup><sup>,</sup><sup>3</sup>  | 198 | 375000 |
| Michael F. Klein<sup>2</sup><sup>,</sup><sup>3</sup>  | 183 | 345000 |
| Patricia Maleski | 156 | 295000 |
| W. Allen Reed<sup>3</sup>  | 312 | 590000 |

---

---

| | |
|:---|:---|
| 1 | Includes all amounts paid for serving as director/trustee of the funds in the Fund Complex, as well as serving as Chair of the Boards or a Chairperson of a Committee. |

---

---

| | |
|:---|:---|
| 2 | The amounts shown in this column represent the aggregate compensation before deferral with respect to the Fund's fiscal year. The following Trustees deferred compensation from the Fund during the fiscal year ended October 31, 2022: Mr. Kearns, $85 and Mr. Klein, $183. |

---

---

| | |
|:---|:---|
| 3 | The amounts shown in this column represent the aggregate compensation paid by all of the funds in the Fund Complex as of December 31, 2022 before deferral by the Trustees under the DC Plan. As of December 31, 2022, the value (including interest) of the deferral accounts across the Fund Complex for Messrs. Kearns, Klein and Reed pursuant to the deferred compensation plan was $1,003,275, $3,052,005 and $3,795,878, respectively. Because the funds in the Fund Complex have different fiscal year ends, the amounts shown in this column are presented on a calendar year basis. |

---

4 Ms. Cashman and Mr. Grier became members of the Advisory Board of the Board of Trustees on January 1, 2022 and Trustees on February 25, 2022.

Prior to December 31, 2003, 49 of the Morgan Stanley Funds (the "Adopting Funds"), including the Fund, had adopted a retirement program under which an Independent Trustee who retired after serving for at least five years as an Independent Trustee of any such fund (an "Eligible Trustee") would have been entitled to retirement payments, based on factors such as length of service, upon reaching the eligible retirement age. On December 31, 2003, the amount of accrued retirement benefits for each Eligible Trustee was frozen, and will be payable, together with a return of 8% per annum, at or following each such Eligible Trustee's retirement as shown in the table below.

The following table illustrates the retirement benefits accrued to the Fund's Independent Trustees by the Fund for the fiscal year ended October 31, 2022 and by the Adopting Funds for the calendar year ended December 31, 2022, and the estimated retirement benefits for the Independent Trustees from the Fund as of the fiscal year ended October 31, 2022 and from the Adopting Funds for each calendar year following retirement. Only the Trustees listed below participated in the retirement program.

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **Retirement Benefits Accrued as Fund Expenses** | **Retirement Benefits Accrued as Fund Expenses** | **Estimated Annual Benefits Upon Retirement<sup>1</sup>**  | **Estimated Annual Benefits Upon Retirement<sup>1</sup>**  |
| <br>**Name of Independent Trustee** | **By the Fund<sup>2</sup>**  | **By all Adopting Funds** | **From the Fund** | **From all Adopting Funds** |
| Manuel H. Johnson | $(179) | $(5498) | $1420 | $55816 |

---

---

| | |
|:---|:---|
| 1 | Total compensation accrued under the retirement plan, together with a return of 8% per annum, will be paid annually commencing upon retirement and continuing for the remainder of the Trustee's life. |

---

2 Mr. Johnson's retirement expenses are negative due to the fact that his retirement date has been extended and therefore his expenses have been over accrued.

**CONTROL PERSONS AND PRINCIPAL HOLDERS OF SECURITIES**

The percentage ownership of shares of the Fund changes from time to time depending on purchases and redemptions by shareholders and the total number of shares outstanding.

As of February 1, 2023, the Trustees and officers of the Fund, as a group, owned less than 1% of any class of outstanding shares of beneficial interest of the Fund.

The following owned beneficially or of record 5% or more of the outstanding shares of any class of the Fund as of February 1, 2023:

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---

| | | |
|:---|:---|:---|
| **CLASS A** | **CLASS A** | **CLASS A** |
| **Fund** | **Name and Address** | **% of Class** |
| Mortgage Securities Trust | Morgan Stanley & Co<br>Harborside Financial Center<br>Plaza II 3rd Floor<br>Jersey City NJ 07311 | 63.53% |
| Mortgage Securities Trust | National Financial Services LLC<br>For Exclusive Benefit Of Our Cust<br>ATTN Mutual Funds Dept 4th Floor<br>499 Washington Blvd<br>Jersey City NJ 07310-1995 | 6.77% |
| Mortgage Securities Trust | Charles Schwab & Co Inc<br>ATTN: Mutual Funds<br>101 Montgomery ST<br>San Francisco CA 94104-4151 | 5.02% |
| **CLASS L** | **CLASS L** | **CLASS L** |
| **Fund** | **Name and Address** | **% of Class** |
| Mortgage Securities Trust | Morgan Stanley & Co<br>Harborside Financial Center<br>Plaza II 3rd Floor<br>Jersey City NJ 07311 | 91.90% |
| Mortgage Securities Trust | Wells Fargo Clearing Services LLC<br>A/C 1699-0135<br>Special Custody Acct For The<br>Exclusive Benefit Of Customer<br>2801 Market St<br>Saint Louis MO 63103-2523 | 5.47% |
| **CLASS I** | **CLASS I** | **CLASS I** |
| **Fund** | **Name and Address** | **% of Class** |
| Mortgage Securities Trust | Morgan Stanley & Co<br>Harborside Financial Center<br>Plaza II 3rd Floor<br>Jersey City NJ 07311 | 43.35% |
| Mortgage Securities Trust | LPL Financial<br>Omnibus Customer Account<br>ATTN Mutual Fund Trading<br>4707 Executive DR<br>San Diego CA 92121-3091 | 30.22% |
| Mortgage Securities Trust | National Financial Services LLC<br>For Exclusive Benefit Of Our Customers<br>499 Washington Blvd<br>ATTN Mutual Funds Dept - 4th Floor<br>Jersey City NJ 07310-1995 | 5.67% |
| **CLASS R6** | **CLASS R6** | **CLASS R6** |
| **Fund** | **Name and Address** | **% of Class** |
| Mortgage Securities Trust | Morgan Stanley Investment Management<br>ATTN Michael Agosta<br>1633 Broadway FL 26<br>New York NY 10019-6708 | 100% |

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**INVESTMENT ADVISORY AND OTHER SERVICES**

**Adviser and Administrator**

The Adviser to the Fund is Morgan Stanley Investment Management Inc., a Delaware corporation, whose address is 522 Fifth Avenue, New York, NY 10036. The Adviser is a wholly-owned subsidiary of Morgan Stanley, a Delaware corporation traded on the NYSE under the symbol "MS." Morgan Stanley is a preeminent global financial services firm engaged in securities trading and brokerage activities, as well as providing investment banking, research and analysis, financing and financial advisory services. As of December 31, 2022, the Adviser, together with its affiliated asset management companies, had approximately $1.3 trillion in assets under management or supervision.

Pursuant to an Investment Advisory Agreement (the "Investment Advisory Agreement") with the Adviser, the Fund has retained the Adviser to manage and/or oversee the investment of the Fund's assets, including the placing of orders for the purchase and sale of portfolio securities. The Fund pays the Adviser monthly compensation calculated daily by applying the following annual rates to the net assets of the Fund determined as of the close of each business day: 0.47% of the portion of the daily net assets not exceeding $1 billion; 0.445% to the portion of the daily net assets exceeding $1 billion but not exceeding $1.5 billion; 0.42% to the portion of the daily net assets exceeding $1.5 billion but not exceeding $2 billion; 0.395% to the portion of the daily net assets exceeding $2 billion but not exceeding $2.5 billion; 0.37% to the portion of the daily net assets exceeding $2.5 billion but not exceeding $5 billion; 0.345% to the portion of the daily net assets exceeding $5 billion but not exceeding $7.5 billion; 0.32% to the portion of the daily net assets exceeding $7.5 billion but not exceeding $10 billion; 0.295% to the portion of the daily net assets exceeding $10 billion but not exceeding $12.5 billion; and 0.27% to the portion of the daily net assets exceeding $12.5 billion. The investment advisory fee is allocated among the Classes pro rata based on the net assets of the Fund attributable to each Class.

Administration services are provided to the Fund by Morgan Stanley Investment Management Inc., a wholly-owned subsidiary of Morgan Stanley, pursuant to a separate administration agreement (the "Administration Agreement") entered into by the Fund with the Administrator. The Fund pays the Administrator monthly compensation which on an annual basis equals 0.08% of average daily net assets.

Morgan Stanley Investment Management Inc., as the Adviser and the Administrator, has agreed to reduce its advisory fee, its administration fee, and/or reimburse the Fund, if necessary, if such fees would cause the total annual operating expenses of the Fund to exceed 1.00% for Class A, 1.30% for Class L, 0.70% for Class I, 1.80% for Class C and 0.65% for Class R6. In determining the actual amount of fee waivers and/or expense reimbursements for the Fund, if any, the Adviser and Administrator exclude from total annual operating expenses, acquired fund fees and expenses (as applicable), certain investment related expenses, taxes, interest and other extraordinary expenses (including litigation). The fee waivers and/or expense reimbursements will continue for at least one year from the date of the Prospectus or until such time as the Fund's Board of Trustees acts to discontinue all or a portion of such waivers and/or reimbursements when it deems such action is appropriate. The Adviser and Administrator may make additional voluntary fee waivers and/or expense reimbursements. The Adviser and Administrator may discontinue the voluntary fee waivers and/or expense reimbursements at any time in the future.

The following table reflects for the Fund (i) the advisory fee paid; and (ii) the advisory fee waived and/or affiliated rebates for each of the past three fiscal years ended October 31, 2020, 2021 and 2022:

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **Advisory Fees Paid**<br>**(After Fee Waivers and/or**<br>**Affiliated Rebates)** | **Advisory Fees Paid**<br>**(After Fee Waivers and/or**<br>**Affiliated Rebates)** | **Advisory Fees Paid**<br>**(After Fee Waivers and/or**<br>**Affiliated Rebates)** | **Advisory Fees Waived** | **Advisory Fees Waived** | **Advisory Fees Waived** | **Affiliated Rebates** | **Affiliated Rebates** | **Affiliated Rebates** |
| **2020** | **2021** | **2022** | **2020** | **2021** | **2022** | **2020** | **2021** | **2022** |
| $598816 | $655821 | $522450  | $246717 | $265475 | $300524 | $18655 | $14417 | $11852 |

---

For the fiscal years ended October 31, 2020, 2021 and 2022, the Fund paid compensation under its Administration Agreement as follows (no administration fees were waived):

---

| | | |
|:---|:---|:---|
| **Compensation Paid for the Fiscal**<br>**Year Ended October 31,** | **Compensation Paid for the Fiscal**<br>**Year Ended October 31,** | **Compensation Paid for the Fiscal**<br>**Year Ended October 31,** |
| **2020** | **2021** | **2022** |
| $147096 | $159270 | $142098  |

---

Under a Sub-Administration Agreement between the Administrator and State Street Bank and Trust Company ("State Street"), State Street provides certain administrative services to the Fund. For such services, the Administrator pays State Street a portion of the fee the Administrator receives from the Fund. The Administrator supervises and monitors the administrative and accounting services provided by State Street. Their services are also subject to the supervision of the officers and Board of Trustees of the Fund. State Street's business address is One Lincoln Street, Boston, MA 02111-2101.

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**Principal Underwriter**

The Fund's principal underwriter is Morgan Stanley Distribution, Inc. (which has the same address as the Adviser). In this capacity, the Fund's shares are distributed by the Distributor. The Distributor has entered into a selected dealer agreement with Morgan Stanley Smith Barney LLC and Morgan Stanley & Co. LLC, which through their own sales organizations sell shares of the Fund. In addition, the Distributor may enter into similar agreements with other selected broker-dealers. The Distributor, a Delaware corporation, is a wholly-owned subsidiary of Morgan Stanley.

The Distributor bears all expenses it may incur in providing services under the Distribution Agreement. These expenses include the payment to Financial Intermediaries of any sales commissions, service fees and other expenses for sales of the Fund's shares incurred or paid by Financial Intermediaries. The Distributor also pays certain expenses in connection with the distribution of the Fund's shares, including the costs of preparing, printing and distributing advertising or promotional materials, and the costs of printing and distributing prospectuses and supplements thereto used in connection with the offering and sale of the Fund's shares. The Fund bears the costs of initial typesetting, printing and distribution of prospectuses and supplements thereto to shareholders. The Fund also bears the costs of registering the Fund and its shares under federal and state securities laws and pays filing fees in accordance with state securities laws.

The Fund and the Distributor have agreed to indemnify each other against certain liabilities, including liabilities under the 1933 Act. Under the Distribution Agreement, the Distributor uses its best efforts in rendering services to the Fund, but in the absence of willful misfeasance, bad faith, gross negligence or reckless disregard of its obligations, the Distributor is not liable to the Fund or any of its shareholders for any error of judgment or mistake of law or for any act or omission or for any losses sustained by the Fund or its shareholders.

**Services Provided by the Adviser and Administrator**

The Adviser manages the investment of the Fund's assets, including the placing of orders for the purchase and sale of portfolio securities. The Adviser obtains and evaluates the information and advice relating to the economy, securities markets and specific securities as it considers necessary or useful to continuously manage the assets of the Fund in a manner consistent with its investment objective.

Under the terms of the Administration Agreement, the Administrator maintains certain of the Fund's books and records and furnishes, at its own expense, the office space, facilities, equipment, clerical help and bookkeeping as the Fund may reasonably require in the conduct of its business. The Administrator also assists in the preparation of prospectuses, proxy statements and reports required to be filed with federal and state securities commissions (except insofar as the participation or assistance of the independent registered public accounting firm and attorneys is, in the opinion of the Administrator, necessary or desirable). The Administrator also bears the cost of telephone service, heat, light, power and other utilities provided to the Fund.

Expenses not expressly assumed by the Adviser under the Investment Advisory Agreement or by the Administrator under the Administration Agreement or by the Distributor will be paid by the Fund. These expenses will be allocated among the five Classes of shares pro rata based on the net assets of the Fund attributable to each Class, except as described below. Such expenses include, but are not limited to: expenses of the Plan of Distribution pursuant to Rule 12b-1; charges and expenses of any registrar, custodian, stock transfer and dividend disbursing agent; brokerage commissions; taxes; registration costs of the Fund and its shares under federal and state securities laws; the cost and expense of printing, including typesetting, and distributing prospectuses of the Fund and supplements thereto to the Fund's shareholders; all expenses of shareholders' and Trustees' meetings and of preparing, printing and mailing of proxy statements and reports to shareholders; fees and travel expenses of Trustees or members of any advisory board or committee who are not employees of the Adviser or any corporate affiliate of the Adviser; all expenses incident to any dividend, withdrawal or redemption options; charges and expenses of any outside service used for pricing of the Fund's shares; fees and expenses of legal counsel, including counsel to the Trustees who are not interested persons of the Fund or of the Adviser (not including compensation or expenses of attorneys who are employees of the Adviser); fees and expenses of the Fund's independent registered public accounting firm; membership dues of industry associations; interest on Fund borrowings; postage; insurance premiums on property or personnel (including officers and Trustees) of the Fund which inure to its benefit; extraordinary expenses (including, but not limited to, legal claims and liabilities and litigation costs and any indemnification relating thereto); and all other costs of the Fund's operation. The 12b-1 fees relating to a particular Class will be allocated directly to that Class. In addition, sub-accounting and other expenses directly attributable to a particular Class (except advisory or custodial fees) may be allocated directly to such Class.

The Investment Advisory Agreement provides that in the absence of willful misfeasance, bad faith, gross negligence or reckless disregard of its obligations thereunder, the Adviser is not liable to the Fund or any of its investors for any act or omission by the Adviser or for any losses sustained by the Fund or its investors.

The Investment Advisory Agreement will remain in effect from year-to-year, provided continuance of the Investment Advisory Agreement is approved at least annually by the vote of the holders of a majority, as defined in the 1940 Act, of the outstanding shares

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of the Fund, or by the Trustees; provided that in either event such continuance is approved annually by the vote of a majority of the Independent Trustees.

The Administration Agreement provides that in the absence of willful misfeasance, bad faith, gross negligence or reckless disregard of its obligations thereunder, the Administrator is not liable to the Fund or any of its investors for any act or omission by the Administrator or for any losses sustained by the Fund or its investors. The Administration Agreement will continue unless terminated by either party by written notice delivered to the other party within 30 days.

**Dealer Reallowances**

Upon notice to selected broker-dealers, the Distributor may reallow up to the full applicable front-end sales charge during periods specified in such notice. During periods when 90% or more of the sales charge is reallowed, such selected broker-dealers may be deemed to be underwriters as that term is defined in the 1933 Act.

**Rule 12b-1 Plan**

The Fund has adopted an Amended and Restated Plan of Distribution, effective February 25, 2013, pursuant to Rule 12b-1 under the 1940 Act (the "Plan"), pursuant to which each Class, other than Class I and Class R6, pays the Distributor compensation accrued daily and payable monthly at the following maximum annual rates: 0.25%, 0.50% and 1.00% of the average daily net assets of Class A, Class L and Class C shares, respectively.

The Distributor also receives the proceeds of front-end sales charges ("FSCs") and of contingent deferred sales charges ("CDSCs") imposed on certain redemptions of shares, which are separate and apart from payments made pursuant to the Plan. The Distributor has informed the Fund that it and/or Morgan Stanley & Co. LLC received the proceeds of CDSCs and FSCs, for the last three fiscal years ended October 31, as applicable, in approximate amounts as provided in the table below.

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Class** | **2022** | **2022** | **2021** | **2021** | **2020** | **2020** |
| Class A | FSCs:<sup>1</sup><br>CDSCs: | $413<br>$14215 | FSCs:<sup>1</sup><br>CDSCs: | $54032<br>$37382 | FSCs:<sup>1</sup><br>CDSCs: | $15504<br>$163 |
| Class C | CDSCs: | $1073 | CDSCs: | $17 | CDSCs: | $230 |

---

1 FSCs apply to Class A only.

The entire fee payable by Class A shares and a portion of the fees payable by each of Class L and Class C shares each year pursuant to the Plan up to 0.25% of such Class' average daily net assets are currently each characterized as a "service fee" under the Rules of the Financial Industry Regulatory Authority ("FINRA") (of which the Distributor is a member). The "service fee" is a payment made for personal service and/or the maintenance of shareholder accounts. The remaining portion of the Plan fees payable by a Class, if any, is characterized as an "asset-based sales charge" as such is defined by the Rules of FINRA.

Under the Plan and as required by Rule 12b-1, the Trustees receive and review promptly after the end of each calendar quarter a written report provided by the Distributor of the amounts expended under the Plan and the purpose for which such expenditures were made. For the fiscal year ended October 31, 2022, Class A, Class L and Class C shares of the Fund made payments under the Plan amounting to $108,295, $4,385 and $29,866, respectively, which amounts are equal to 0.25%, 0.50% and 1.00% of the average daily net assets of Class A, Class L and Class C, respectively, for the fiscal year.

The Plan was adopted in order to permit the implementation of the Fund's method of distribution. Under this distribution method the Fund offers five Classes, each with a different distribution arrangement.

With respect to Class A shares of the Fund, the Distributor generally compensates Financial Intermediaries from proceeds of the FSC, commissions for the sale of Class A shares, currently a gross sales credit of up to 2.75% of the amount sold and an annual residual commission, currently a residual of up to 0.50% of the current value of the respective accounts for which they are dealers of record in all cases.

With respect to Class C shares of the Fund, a commission or transaction fee generally will be compensated by the Distributor at the time of purchase directly out of the Distributor's assets (and not out of the Fund's assets) to Financial Intermediaries who initiate and are responsible for such purchases computed based on a percentage of the dollar value of such shares sold of up to 1.00% on Class C shares.

Proceeds from any CDSC and any distribution fees on Class C shares are paid to the Distributor and are used by the Distributor to defray its distribution related expenses in connection with the sale of the Fund's shares, such as the payment to Financial Intermediaries for selling such shares. With respect to Class C shares, the Financial Intermediaries generally receive from the Distributor ongoing distribution fees of up to 1.00% of the average daily net assets of the Fund's Class C shares annually commencing in the second year after purchase.

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With respect to Class L shares of the Fund, the Financial Intermediaries generally receive from the Distributor ongoing distribution fees of up to 0.50% of the average daily net assets of the Fund's Class L shares annually.

The distribution fee that the Distributor receives from the Fund under the Plan, in effect, offsets distribution expenses incurred under the Plan on behalf of the Fund and, in the case of Class C shares, opportunity costs, such as the gross sales credit and an assumed interest charge thereon ("carrying charge"). These expenses may include the cost of Fund-related educational and/or business-related trips or payment of Fund-related educational and/or promotional expenses of Financial Intermediaries.

The Fund may reimburse expenses incurred or to be incurred in promoting the distribution of the Fund's Class A, Class L and Class C shares and/or in servicing shareholder accounts. Reimbursement will be made through payments at the end of each month. The amount of each monthly payment may in no event exceed an amount equal to a payment at the annual rate of 0.25%, in the case of Class A, 0.50%, in the case of Class L and 1.00%, in the case of Class C, of the average net assets of the respective Class during the month. No interest or other financing charges, if any, incurred on any distribution expenses on behalf of Class A and Class L will be reimbursable under the Plan.

Each Class paid 100% of the amounts accrued under the Plan with respect to that Class for the fiscal year ended October 31, 2022 to the Distributor. It is estimated that the Distributor spent this amount in approximately the following ways: (i) 0.00% ($0)—advertising and promotional expenses; (ii) 0.00% ($0)— printing and mailing of prospectuses for distribution to other than current shareholders; and (iii) 0.00% ($0) — other expenses, including the gross sales credit and the carrying charge, of which 0% ($0) represents carrying charges, 0.00% ($0) represents commission credits for payments of commissions to Financial Intermediaries and 0.00% ($0) represents overhead and other branch office distribution-related expenses. The amounts accrued by Class A and a portion of the amounts accrued by Class L under the Plan during the fiscal year ended October 31, 2022 were service fees. The remainder of the amounts accrued by Class L were for expenses, which relate to compensation of sales personnel and associated overhead expenses.

In the case of Class A, Class L and Class C shares, expenses incurred pursuant to the Plan in any calendar year in excess of 0.25%, 0.50% or 1.00% of the average daily net assets of Class A, Class L or Class C shares, respectively, will not be reimbursed by the Fund through payments in any subsequent year, except that expenses representing a gross sales commission credited to Financial Intermediaries at the time of sale may be reimbursed in the subsequent calendar year. The Distributor has advised the Fund that there were no unreimbursed expenses representing a gross sales commission credited to Financial Intermediaries in the case of Class A, Class L or Class C shares at December 31, 2022 (the end of the calendar year). No interest or other financing charges will be incurred on any Class A, Class L or Class C distribution expenses incurred by the Distributor under the Plan or on any unreimbursed expenses due to the Distributor pursuant to the Plan.

No interested person of the Fund nor any Independent Trustee has any direct financial interest in the operation of the Plan except to the extent that the Distributor, the Adviser, Morgan Stanley Smith Barney LLC or certain of their employees may be deemed to have such an interest as a result of benefits derived from the successful operation of the Plan or as a result of receiving a portion of the amounts expended thereunder by the Fund.

On an annual basis, the Trustees, including a majority of the Independent Trustees, consider whether the Plan should be continued. Prior to approving the last continuation of the Plan, the Trustees requested and received from the Distributor and reviewed all the information which they deemed necessary to arrive at an informed determination. In making their determination to continue the Plan, the Trustees considered: (1) the Fund's experience under the Plan and whether such experience indicates that the Plan is operating as anticipated; (2) the benefits the Fund had obtained, was obtaining and would be likely to obtain under the Plan, including that: (a) the Plan is essential in order to give Fund investors a choice of alternatives for payment of distribution and service charges and to enable the Fund to continue to grow and avoid a pattern of net redemptions which, in turn, are essential for effective investment management; and (b) without the compensation to individual brokers and the reimbursement of distribution and account maintenance expenses of Financial Intermediaries made possible by the 12b-1 fees, Financial Intermediaries could not establish and maintain an effective system for distribution, servicing of Fund shareholders and maintenance of shareholder accounts; and (3) what services had been provided and were continuing to be provided under the Plan to the Fund and its shareholders. Based upon their review, the Trustees, including each of the Independent Trustees, determined that continuation of the Plan would be in the best interest of the Fund and would have a reasonable likelihood of continuing to benefit the Fund and its shareholders.

The Plan may not be amended to increase materially the amount to be spent for the services described therein without approval by the shareholders of the affected Class or Classes of the Fund, and all material amendments to the Plan must also be approved by the Trustees. The Plan may be terminated at any time, without payment of any penalty, by vote of a majority of the Independent Trustees or by a vote of a majority of the outstanding voting securities of the Fund (as defined in the 1940 Act) on not more than 30 days' written notice to any other party to the Plan. So long as the Plan is in effect, the election and nomination of Independent Trustees shall be committed to the discretion of the Independent Trustees.

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**Other Service Providers**

**Transfer Agent/Dividend Disbursing Agent**

SS&C Global Investor and Distribution Solutions, Inc. ("SS&C GIDS"), 2000 Crown Colony Drive, Quincy, MA 02169-0953, serves as the Fund's transfer agent and dividend disbursing agent for payment of dividends and distributions on Fund shares.

**Co-Transfer Agent**

Eaton Vance Management is the co-transfer agent with respect to Fund. Eaton Vance Management is a registered transfer agent and operates the Fund's call center. In connection therewith, Eaton Vance Management performs certain transfer agency services related to processing and relaying purchase and redemption orders to SS&C GIDS, the Funds' transfer agent. The Fund will bear the costs associated with Eaton Vance Management's provision of these transfer agency services.

**Custodian and Independent Registered Public Accounting Firm**

State Street Bank and Trust Company, One Lincoln Street, Boston, MA 02111-2101, is the custodian of the Fund's assets. Any of the Fund's cash balances with the Custodian in excess of $250,000 are unprotected by federal deposit insurance. These balances may, at times, be substantial.

Ernst & Young LLP, located at 200 Clarendon Street, Boston, MA 02116-5021, serves as the Fund's independent registered public accounting firm and provides audit and audit-related services, tax-related services and assistance in connection with various SEC filings.

**Securities Lending**

Pursuant to an agreement between the Fund and State Street, the Fund may lend its securities through State Street as securities lending agent to certain qualified borrowers. As securities lending agent of the Fund, State Street administers the Fund's securities lending program. These services include arranging the loans of securities with approved borrowers and their return to the Fund upon loan termination, negotiating the terms of such loans, selecting the securities to be loaned and monitoring dividend activity relating to loaned securities. State Street also marks-to-market daily the value of loaned securities and collateral and may require additional collateral as necessary from borrowers. State Street may also, in its capacity as securities lending agent, invest cash received as collateral in pre-approved investments in accordance with the Securities Lending Authorization Agreement. State Street maintains records of loans made and income derived therefrom and makes available such records that the Fund deems necessary to monitor the securities lending program.

The Fund did not earn income or incur any costs or expenses relating to its securities lending program during the most recent fiscal year.

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**Fund Management**

**Other Accounts Managed by the Portfolio Managers**

Other Accounts Managed by Portfolio Managers at October 31, 2022 (unless otherwise indicated):

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| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | **Other Registered Investment** **Companies** | **Other Registered Investment** **Companies** | **Other Pooled Investment Vehicles** | **Other Pooled Investment Vehicles** | **Other Accounts** | **Other Accounts** |
| <br>**Portfolio Managers** | **Number of** **Accounts** | **Total Assets in the** **Accounts** | **Number of** **Accounts** | **Total Assets in the** **Accounts** | **Number of** **Accounts** | **Total Assets in the** **Accounts** |
| Gregory Finck | 2 | $737.5 million | 14 | $2.8 billion | 31<sup>1</sup>  | $4.4 billion<sup>1</sup>  |
| Matt Buckley | 1 | $669.7 | 0 | $0 | 0 | $0 |

---

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| | |
|:---|:---|
| 1 | Of these other accounts, one accounts with approximately $1 billion in assets had performance-based fees. |

---

Because the portfolio managers may manage assets for other investment companies, pooled investment vehicles and/or other accounts (including institutional clients, pension plans and certain high net worth individuals), there may be an incentive to favor one client over another resulting in conflicts of interest. For instance, the Adviser may receive fees from certain accounts that are higher than the fee it receives from the Fund, or it may receive a performance-based fee on certain accounts. In those instances, the portfolio managers may have an incentive to favor the higher and/or performance-based fee accounts over the Fund. In addition, a conflict of interest could exist to the extent the Adviser has proprietary investments in certain accounts, where portfolio managers have personal investments in certain accounts or when certain accounts are investment options in the Adviser's employee benefits and/or deferred compensation plans. The portfolio managers may have an incentive to favor these accounts over others. If the Adviser manages accounts that engage in short sales of securities of the type in which the Fund invests, the Adviser could be seen as harming the performance of the Fund for the benefit of the accounts engaging in short sales if the short sales cause the market value of the securities to fall. The Adviser has adopted trade allocation and other policies and procedures that it believes are reasonably designed to address these and other conflicts of interest.

**Portfolio Manager Compensation Structure**

Morgan Stanley's compensation structure is based on a total reward system of base salary and incentive compensation, which is paid either in the form of cash bonus, or for employees meeting the specified deferred compensation eligibility threshold, partially as a cash bonus and partially as mandatory deferred compensation. Deferred compensation granted to MSIM employees are generally granted as a mix of deferred cash awards under the Investment Management Alignment Plan ("IMAP") and equity-based awards in the form of stock units. The portion of incentive compensation granted in the form of a deferred compensation award and the terms of such awards are determined annually by the Compensation, Management Development and Succession Committee of the Morgan Stanley Board of Directors.

**Base salary compensation.** Generally, portfolio managers receive base salary compensation based on the level of their position with the Adviser.

**Incentive compensation.** In addition to base compensation, portfolio managers may receive discretionary year-end compensation.

Incentive compensation may include:

■ Cash Bonus

■ Deferred Compensation:

■ A mandatory program that defers a portion of incentive compensation into restricted stock units or other awards based on Morgan Stanley common stock or other plans that are subject to vesting and other conditions.

■ IMAP is a cash-based deferred compensation plan designed to increase the alignment of participants' interests with the interests of the Adviser's clients. For eligible employees, a portion of their deferred compensation is mandatorily deferred into IMAP on an annual basis. Awards granted under IMAP are notionally invested in referenced funds available pursuant to the plan, which are funds advised by MSIM. Portfolio managers are required to notionally invest a minimum of 40% of their account balance in the designated funds that they manage and are included in the IMAP notional investment fund menu.

■ Deferred compensation awards are typically subject to vesting over a multi-year period and are subject to cancellation through the payment date for competition, cause (i.e., any act or omission that constitutes a breach of obligation to MSIM, including failure to comply with internal compliance, ethics or risk management standards, and failure or refusal to perform duties satisfactorily, including supervisory and management duties), disclosure of proprietary information, and solicitation of employees or clients. Awards are also subject to clawback through the payment date if an employee's act or omission (including with respect to direct supervisory responsibilities) causes a restatement of the Firm's consolidated financial results, constitutes a violation of the Firm's global risk management principles, policies and standards, or causes a loss of revenue associated with a position on which the employee was paid and the employee operated outside of internal control policies.

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MSIM compensates employees based on principles of pay-for-performance, market competitiveness and risk management. Eligibility for, and the amount of any, discretionary compensation is subject to a multi-dimensional process. Specifically, consideration is given to one or more of the following factors, which can vary by portfolio management team and circumstances:

■ Revenue and profitability of the business and/or each fund/account managed by the portfolio manager

■ Revenue and profitability of the Firm

■ Return on equity and risk factors of both the business units and Morgan Stanley

■ Assets managed by the portfolio manager

■ External market conditions

■ New business development and business sustainability

■ Contribution to client objectives

■ Team, product and/or MSIM performance

■ The pre-tax investment performance of the funds/accounts managed by the portfolio manager (which may, in certain cases, be measured against the applicable benchmark(s) and/or peer group(s) over one-, three- and five-year periods)

■ Individual contribution and performance

Further, the Firm's Global Incentive Compensation Discretion Policy requires compensation managers to consider only legitimate, business related factors when exercising discretion in determining variable incentive compensation, including adherence to Morgan Stanley's core values, conduct, disciplinary actions in the current performance year, risk management and risk outcomes.

**Securities Ownership of Portfolio Managers**

As of October 31, 2022 (unless otherwise noted), the dollar range of securities beneficially owned (or held notionally through IMAP) by each portfolio manager in the Fund is shown below:

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| | |
|:---|:---|
| Gregory Finck | Over $1 million |
| Matt Buckley |  |

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**Codes of Ethics**

The Fund, the Adviser and the Distributor have each adopted a Code of Ethics pursuant to Rule 17j-1 under the 1940 Act. The Codes of Ethics are designed to detect and prevent improper personal trading. The Codes of Ethics permit personnel subject to the Codes of Ethics to invest in securities, including securities that may be purchased, sold or held by the Fund, subject to a number of restrictions and controls, including prohibitions against purchases of securities in an initial public offering and a preclearance requirement with respect to personal securities transactions.

**Proxy Voting Policy and Proxy Voting Record**

The Board of Trustees believes that the voting of proxies on securities held by the Fund is an important element of the overall investment process. As such, the Trustees have delegated the responsibility to vote such proxies to the Adviser.

A copy of the Adviser's Proxy Voting Policy ("Proxy Policy") is attached hereto as Appendix A. In addition, a copy of the Proxy Policy, as well as the Fund's most recent proxy voting record for the 12-month period ended June 30, as filed with the SEC, are available without charge on our web site at www.morganstanley.com/im. The Fund's proxy voting record is also available without charge on the SEC's web site at www.sec.gov.

**Revenue Sharing**

This section does not apply to Class R6 shares. The Adviser and/or the Distributor may pay compensation, out of their own funds and not as an expense of the Fund, to certain third parties, such as banks, brokers, dealers, recordkeepers and administrators of various deferred compensation plans, other financial intermediaries or financial services firms or other persons ("Intermediary") in connection with the sale, distribution, marketing and retention of Fund shares and/or shareholder servicing. For example, the Adviser or the Distributor may pay additional compensation to a Intermediary for, among other things, promoting the sale and distribution of Fund shares, providing access to various programs, mutual fund platforms or preferred or recommended mutual fund lists that may be offered by a Intermediary, granting the Distributor access to a Intermediary's financial advisors and consultants, providing assistance in the ongoing education and training of a Intermediary's financial personnel, conferences or seminars, sales, client and investor events, due diligence events, other firm-sponsored events or other programs, furnishing marketing support, finders or referral fees for directing investors to the Fund, maintaining share balances and/or for sub-accounting, recordkeeping, administrative, shareholder or transaction processing services. The Adviser and/or Distributor will also reimburse certain investors, or make payments to certain third-party vendors, to defray costs incurred by investors for the use of treasury management systems or other business-related software for investments in funds. Such payments are in addition to any distribution fees, shareholder servicing fees and/or transfer agency fees that may be payable by the Fund. The additional payments may be based on various factors, including level of

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sales (based on gross or net sales or some specified minimum sales or some other similar criteria related to sales of the Fund and/or some or all other Morgan Stanley Funds), amount of assets invested by the Intermediary's customers (which could include current or aged assets of the Fund and/or some or all other Morgan Stanley Funds), the Fund's advisory fees, some other agreed upon amount or other measures as determined from time to time by the Adviser and/or Distributor. These categories of additional compensation are not mutually exclusive and the Adviser and/or the Distributor may pay further types of additional compensation in the future. The amount of these payments may be different for different Intermediaries.

With respect to Morgan Stanley Smith Barney LLC, these payments may include the following amounts, which are paid in accordance with the applicable compensation structure:

(1) an ongoing annual fee in an amount of $582,650 in consideration of the Adviser's participation at various Morgan Stanley Smith Barney LLC events, including seminars, conferences and meetings as determined by Morgan Stanley Smith Barney LLC;

(2) an ongoing annual fee in an amount of $575,000 in consideration of Morgan Stanley Smith Barney LLC providing Adviser with access to distribution analytical data in relation to sales of the Fund and certain other products managed and/or sponsored by the Adviser or its affiliates;

(3) on Class I, Class A, Class L and Class C shares of the Fund held in Morgan Stanley Smith Barney LLC brokerage and advisory accounts, an ongoing annual fee in an amount up to 0.10% of the total average daily NAV of such shares for the applicable quarterly period;

(4) on Class I shares of the Fund held in Morgan Stanley Smith Barney LLC brokerage and advisory accounts as of June 30, 2014, where each such account holds $5 million or more in Class I shares of the Fund, or had $4 million or more in assets (but less than $5 million) as of June 30, 2014 and reached $5 million by December 31, 2014, an ongoing annual fee in an amount equal to 35% of the advisory fee the Adviser receives from the Fund based on the average daily NAV of such shares for the applicable quarterly period;

(5) on Class A and Class I shares of the Fund held in an account through certain 401(k) platforms in Morgan Stanley Smith Barney LLC's Corporate Retirement Solutions, an ongoing annual fee in an amount up to 0.20% of the total average daily NAV of such shares for the applicable quarterly period; and

(6) on purchases of $500,000 or more of Class A shares (for which no initial sales charge was paid), Morgan Stanley Smith Barney LLC may, at the discretion of the Distributor, receive a gross sales credit of up to 0.75% of the amount sold.\*

\* Commissions or transaction fees paid when Morgan Stanley Smith Barney LLC or other Intermediaries initiate and are responsible for purchases of $500,000 or more are computed on a percentage of the dollar value of such shares sold as follows: 0.75% on sales of $500,000 to $4 million, then 0.50% on sales over $4 million to $15 million and then 0.25% on the excess over $15 million. Purchases of Class A shares for which no initial sales charge is paid are subject to a CDSC of 0.75% if the redemption of such shares occurs within 12 months after purchase. The full amount of such CDSC will be retained by the Distributor.

With respect to Morgan Stanley & Co. LLC, these payments may include the following amounts, which are paid in accordance with the applicable compensation structure:

(1) on shares of the Fund, a fee in an amount up to 20% of the advisory fee the Adviser receives from the Fund attributable to such shares for the applicable period, not to exceed one year.

The prospect of receiving, or the receipt of, additional compensation, as described above, by Intermediaries may provide such Intermediaries and their financial advisors and other salespersons with an incentive to favor sales of shares of the Fund over other investment options with respect to which these Intermediaries do not receive additional compensation (or receives lower levels of additional compensation). These payment arrangements, however, will not change the price that an investor pays for shares of the Fund or the amount that the Fund receives to invest on behalf of an investor. Investors may wish to take such payment arrangements into account when considering and evaluating any recommendations relating to Fund shares and should review carefully any disclosure provided by Intermediaries as to their compensation.

**Other Payments to Intermediaries**

The Adviser and/or the Distributor may also make payments, out of their own assets and not as an expense to the Fund, to Intermediaries to offset certain nominal expenses of Intermediaries related to setup, connectivity or other technological maintenance of the Intermediary's investment platform and/or the provision of services with respect to the Fund or share class on an Intermediary's investment platform. Investors may wish to take such payment arrangements into account when considering an investment in Fund shares.

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**BROKERAGE ALLOCATION AND OTHER PRACTICES**

**Brokerage Transactions**

Subject to the general supervision of the Trustees, the Adviser is responsible for decisions to buy and sell securities for the Fund, the selection of brokers and dealers to effect the transactions and the negotiation of brokerage commissions, if any. Purchases and sales of securities are normally transacted through issuers, underwriters or major dealers in U.S. government securities acting as principals. Such transactions are made on a net basis and do not involve payment of brokerage commissions. The cost of securities purchased from an underwriter usually includes a commission paid by the issuer to the underwriters; transactions with dealers normally reflect the spread between bid and asked prices. Options and futures transactions will usually be effected through a broker and a commission will be charged. On occasion, the Fund may also purchase certain money market instruments directly from an issuer, in which case no commissions or discounts are paid.

Pursuant to an order issued by the SEC, the Fund is permitted to engage in principal transactions in money market instruments, subject to certain conditions, with Morgan Stanley & Co. LLC, a broker-dealer affiliated with the Fund's Adviser.

During the fiscal years ended October 31, 2020, 2021 and 2022, the Fund did not effect any principal transactions with Morgan Stanley & Co. LLC.

**Commissions**

Brokerage transactions in securities listed on exchanges or admitted to unlisted trading privileges may be effected through Morgan Stanley & Co. LLC and other affiliated brokers and dealers. In order for an affiliated broker or dealer to effect any portfolio transactions on an exchange for the Fund, the commissions, fees or other remuneration received by the affiliated broker or dealer must be reasonable and fair compared to the commissions, fees or other remuneration paid to other brokers in connection with comparable transactions involving similar securities being purchased or sold on an exchange during a comparable period of time. This standard would allow the affiliated broker or dealer to receive no more than the remuneration which would be expected to be received by an unaffiliated broker in a commensurate arm's-length transaction. Furthermore, the Trustees, including the Independent Trustees, have adopted procedures which are reasonably designed to provide that any commissions, fees or other remuneration paid to an affiliated broker or dealer are consistent with the foregoing standard. The Fund does not reduce the management fee it pays to the Adviser by any amount of the brokerage commissions it may pay to an affiliated broker or dealer.

During the fiscal years ended October 31, 2020, 2021 and 2022, the Fund paid a total of $18,729, $0 and $11,850 respectively, in brokerage commissions.

During the fiscal years ended October 31, 2020, 2021 and 2022, the Fund did not pay any brokerage commissions to an affiliated broker or dealer.

**Brokerage Selection**

The Adviser is responsible for decisions to buy and sell securities for the Fund, for broker-dealer selection and for negotiation of commission rates. The Adviser is prohibited from directing brokerage transactions on the basis of the referral of clients or the sale of shares of advised investment companies. Purchases and sales of securities on a stock exchange are effected through brokers who charge a commission for their services. In the OTC market, securities may be traded as agency transactions through broker-dealers or traded on a "net" basis with dealers acting as principal for their own accounts without a stated commission, although the price of the security usually includes profit to the dealer. In underwritten offerings, securities are purchased at a fixed price which includes an amount of compensation to the underwriter, generally referred to as the underwriter's concession or discount. When securities are purchased or sold directly from or to an issuer, no commissions or discounts are paid.

On occasion, the Fund may purchase certain money market instruments directly from an issuer without payment of a commission or concession. Money market instruments are generally traded on a "net" basis with dealers acting as principal for their own accounts without a stated commission, although the price of the security usually includes a profit to the dealer.

The Fund anticipates that certain of its transactions involving foreign securities will be effected on foreign securities exchanges. There is also generally less government supervision and regulation of foreign securities exchanges and brokers than in the United States.

The Adviser selects broker-dealers for the execution of transactions for the Fund in accordance with their duty to seek "best execution" (i.e., the most favorable terms of execution). In seeking best execution, the Adviser is not obligated to choose the broker-dealer offering the lowest available commission rate if, in the Adviser's reasonable judgment, (i) the total costs or proceeds from the transaction might be less favorable than may be obtained elsewhere; (ii) a higher commission is justified by the brokerage and research services provided by the broker-dealer that fall within the safe harbor of Section 28(e) of the 1934 Act or otherwise is permitted under applicable law; or (iii) other considerations, such as the order size, the time required for execution, the depth and breadth of the market for the security or minimum credit quality requirements to transact business with a particular broker-dealer.

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The research services received include services which aid the Adviser in fulfilling its investment decision-making responsibilities, including (a) furnishing advice as to the value of securities, the advisability of investing in, purchasing or selling securities, and the availability of securities or purchasers or sellers of securities; and (b) furnishing analyses and reports concerning issuers, industries, securities, economic factors and trends, portfolio strategy, and the performance of accounts.

When effecting transactions on behalf of the Fund, the Adviser may trade with any broker-dealer on their list of approved broker-dealers. Approved broker-dealers have met criteria as established by the Adviser's Trading and Research Governance team ("TRG"). TRG reviews and approves broker-dealers periodically to determine whether broker-dealers on the approved list continue to meet such criteria. The approval lists are reported quarterly to the Adviser's Counterparty Governance Committee. When selecting an approved broker-dealer (including an affiliate) to execute securities transactions, the following factors may be considered: (i) best available price; (ii) reliability, integrity and reputation in the industry (which may include a review of financial information and creditworthiness); (iii) execution capabilities, including block positioning, speed of execution and quality and responsiveness of its trading desk; (iv) knowledge of and access to the markets for the securities being traded; (v) potential ability to obtain price improvement; (vi) ability to maintain confidentiality; (vii) ability to handle non-traditional trades; (viii) commission and commission-equivalent rates; (ix) technology infrastructure; (x) clearance and settlement capabilities; (xi) the size of the trade relative to other trades in the same instrument; (xii) ability of a counterparty to commit its capital to the Fund's trade and its access to liquidity; (xiii) counterparty restrictions associated with a portfolio, including regulatory trading, documentation requirement or any specific clearing broker-dealer requirements; (xiv) client-directed execution; (xv) client-specific restrictions; and (xvi) such other factors as may be appropriate.

Subject to the duty to seek best execution, the Adviser uses a portion of the commissions generated when executing client transactions to acquire brokerage and research services that aid in fulfilling investment decision-making responsibilities in accordance with Section 28(e) and applicable law. Commissions paid to broker-dealers providing brokerage and research services may be higher than those charged by other broker-dealers. Subject to applicable law, the Adviser receives a benefit when using client commissions to obtain brokerage and research services because the Adviser does not have to produce or pay for the brokerage research services itself. Therefore, the Adviser has an incentive to select or recommend a broker-dealer based on its interest in receiving brokerage and research services, rather than solely on its clients' interest in obtaining the best price.

The Adviser has adopted policies and procedures designed to help track and evaluate the benefits received from brokerage and research services, as well as to track how much clients pay above the amount that broker-dealers from which the Adviser receives brokerage and research services may have charged solely for execution of such trades. The Adviser utilizes a voting system to assist in making a good faith determination of the value of brokerage and research services it receives in accordance with Section 28(e) and applicable law. In many cases, these involve subjective judgments or approximations. The Adviser has established a process for budgeting research costs and allocating such costs across client accounts.

The Adviser and certain other affiliated advisers have entered into commission sharing arrangements ("CSAs") with executing brokers ("CSA Partners") and a third-party vendor ("CSA Aggregator"). Pursuant to these arrangements, and under the Adviser's supervision, the CSA Partners and CSA Aggregator track execution and research commissions separately and pool and distribute research credits in accordance with the policies and procedures discussed above to approved research providers (which may include executing brokerage firms or independent research providers ("Approved Research Providers")) that provide brokerage and research services. The CSA Aggregator also reconciles research credits from trades with CSA Partners, and pays Approved Research Providers and provides other related administrative functions. In addition, a CSA Partner may provide the Adviser with proprietary research it has developed and, upon instruction, may retain research commission credits as compensation for the provision of such proprietary research services. The Adviser believes that these arrangements allow it to monitor the amount of trading costs that are attributable to execution services on the one hand and other brokerage and research services on the other.

Transactions that generate research credits include equity transactions executed on an agency basis or via a riskless principal transaction where the executing broker-dealer receives a commission. The Adviser does not use CSAs or otherwise have arrangements to pay for brokerage and research services with client commissions in connection with trading fixed income securities. Consistent with long-standing industry practice in the fixed income markets, however, the Adviser, subject to applicable law, may receive brokerage and research services and other information, including access to fixed income trading platforms that dealers provide for no charge to their customers in the ordinary course of business. Fixed income instruments typically trade at a bid/ask spread and without an explicit brokerage charge. While there is not a formal trading expense or commission, clients will bear the implicit trading costs reflected in these spreads.

The Adviser may receive "mixed use" products and services from an Approved Research Provider, where a portion of the product or service assists in its investment decision-making process in accordance with Section 28(e) and a portion may be used for other purposes. Where a product or service has a mixed use, the Adviser will make a reasonable allocation of its cost according to its use and will use client commissions to pay only for the portion of the product or service that assists in its investment decision-making process. The Adviser may have an incentive to allocate the costs to uses that assist in its investment decision-making process because the Adviser may pay for such costs with client commissions rather than its own resources. To the extent the Adviser receives "mixed use"

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products and services, the Adviser will allocate the anticipated costs of a mixed use product or service in good faith and maintain records concerning allocations in order to mitigate such conflicts.

Client accounts that pay a greater amount of commissions relative to other accounts may bear a greater share of the cost of brokerage and research services than such other accounts. The Adviser may use brokerage and research services obtained with brokerage commissions from some clients for the benefit of other clients whose brokerage commissions do not pay for such brokerage and research services. The Adviser may also share brokerage and research services with its affiliated advisers, and the clients of its affiliated advisers may receive the benefits of such brokerage and research services. These arrangements remain subject to the Adviser's overall obligation to seek best execution for client trading.

The EU's Markets in Financial Instruments Directive II ("MiFID II"), which became effective January 3, 2018, requires investment advisers regulated under MiFID II to pay for research services separately from trade execution services, either through their own resources or a research payment account funded by a specific charge to a client. Although the Adviser is not directly subject to the provisions of MiFID II, certain of its affiliated advisers are, such as Morgan Stanley Investment Management Limited; accordingly, as applicable, the Adviser makes a reasonable valuation and allocation of the cost of research services as between MiFID II client accounts and other accounts that participate in CSAs and will pay for research services received with respect to MiFID II client accounts from its own resources. The Adviser and affiliated advisers subject to MiFID II may separately pay for fixed income research from their own resources. Following its withdrawal from the EU on January 31, 2020, the United Kingdom has entered a transition period, during which EU law (including MiFID II) will continue to apply in the United Kingdom. Following the transition period, investment managers in the United Kingdom may still be required to comply with certain MiFID II equivalent requirements in accordance with the handbook of rules and guidance issued by the Financial Conduct Authority.

When permitted under applicable law, portfolio managers generally will aggregate orders of their clients for the same securities in a single order so that such orders are executed simultaneously in order to facilitate best execution and to reduce brokerage costs. The Adviser effects aggregated orders in a manner designed to ensure that no participating client is favored over any other client.

In general, accounts that participate in an aggregated order will participate on a pro rata or other objective basis. Pro rata allocation of securities and other instruments will generally consist of allocation based on the order size of a participating client account in proportion to the size of the orders placed for other accounts participating in the aggregated order. However, the Adviser may allocate such securities and other instruments using a method other than pro rata if their supply is limited, based on differing portfolio characteristics among accounts or to avoid odd lots or small allocations, among other reasons. These allocations are made in the good faith judgment of the Adviser with a goal of seeking to ensure that fair and equitable allocation occurs over time. There may be times that the Adviser is not able to aggregate orders because of applicable law or other considerations when doing so might otherwise be advantageous.

**Regular Broker-Dealers**

During the fiscal year ended October 31, 2022, the Fund did not purchase any securities issued by issuers who were among the ten brokers or ten dealers which executed transactions for or with the Fund in the largest dollar amounts during the period. At October 31, 2022, the Fund did not own any securities issued by any of such issuers.

**CAPITAL STOCK AND OTHER SECURITIES**

The shareholders of the Fund are entitled to a full vote for each full share of beneficial interest held. The Fund is authorized to issue an unlimited number of shares of beneficial interest. All shares of beneficial interest of the Fund are of $0.01 par value and are equal as to earnings, assets and voting privileges except that each class will have exclusive voting privileges with respect to matters relating to distribution expenses borne solely by such class or any other matter in which the interests of one class differ from the interests of any other class. Also, Class A, Class L and Class C bear expenses related to the distribution of their respective shares.

The Fund's Declaration of Trust permits the Trustees to authorize the creation of additional series of shares (the proceeds of which would be invested in separate, independently managed portfolios) and additional classes of shares within any series. The Trustees have not presently authorized any such additional series or classes of shares other than as set forth in the Prospectus.

The Fund is not required to hold annual meetings of shareholders and in ordinary circumstances the Fund does not intend to hold such meetings. The Trustees may call special meetings of shareholders for action by shareholder vote as may be required by the 1940 Act or the Declaration of Trust. Under certain circumstances, the Trustees may be removed by the actions of the Trustees. In addition, under certain circumstances, the shareholders may call a meeting to remove the Trustees and the Fund is required to provide assistance in communicating with shareholders about such a meeting. The voting rights of shareholders are not cumulative, so that holders of more than 50% of the shares voting can, if they choose, elect all Trustees being selected, while the holders of the remaining shares would be unable to elect any Trustees.

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Under Massachusetts law, shareholders of a business trust may, under certain limited circumstances, be held personally liable as partners for the obligations of the Fund. However, the Declaration of Trust contains an express disclaimer of shareholder liability for acts or obligations of the Fund, requires that notice of such Fund obligations include such disclaimer, and provides for indemnification out of the Fund's property for any shareholder held personally liable for the obligations of the Fund. Thus, the risk of a shareholder incurring financial loss on account of shareholder liability is limited to circumstances in which the Fund itself would be unable to meet its obligations. Given the above limitations on shareholder personal liability, and the nature of the Fund's assets and operations, the possibility of the Fund being unable to meet its obligations is remote and thus, in the opinion of Massachusetts counsel to the Fund, the risk to Fund shareholders of personal liability is remote.

The Trustees themselves have the power to alter the number and the terms of office of the Trustees (as provided for in the Declaration of Trust), and they may at any time lengthen or shorten their own terms or make their terms of unlimited duration and appoint their own successors, provided that always at least a majority of the Trustees has been elected by the shareholders of the Fund.

**PURCHASE, REDEMPTION AND PRICING OF SHARES**

*The Fund has suspended offering Class L shares of the Fund for sale to all investors. The Class L shareholders of the Fund do not have the option of purchasing additional Class L shares. However, the existing Class L shareholders may invest in additional Class L shares through reinvestment of dividends and distributions.*

**Purchase/Redemption of Shares**

Information concerning how Fund shares are offered to the public (and how they are redeemed and exchanged) is provided in the Fund's Prospectus.

**Suspension of Redemptions**. Redemptions are not made on days during which the NYSE is closed. The right of redemption may be suspended and the payment therefore may be postponed for more than seven days during any period when (a) the NYSE is closed for other than customary weekends or holidays; (b) the SEC determines trading on the NYSE is restricted; (c) the SEC determines an emergency exists as a result of which disposal by the Fund of securities owned by it is not reasonably practicable or it is not reasonably practicable for the Fund to fairly determine the value of its net assets; or (d) the SEC, by order, so permits.

**Transfer Agent as Agent.** With respect to the redemption or repurchase of Fund shares, the application of proceeds to the purchase of new shares in the Fund or any other Morgan Stanley Funds and the general administration of the exchange privilege, the Transfer Agent acts as agent for the Distributor and for the shareholder's authorized broker-dealer, if any, in the performance of such functions. With respect to exchanges, redemptions or repurchases, the Transfer Agent is liable for its own negligence and not for the default or negligence of its correspondents or for losses in transit. The Fund is not liable for any default or negligence of the Transfer Agent, the Distributor or any authorized broker-dealer.

The Distributor and any authorized broker-dealer have appointed the Transfer Agent to act as their agent in connection with the application of proceeds of any redemption of Fund shares to the purchase of shares of any other Morgan Stanley Fund and the general administration of the exchange privilege. No commission or discounts will be paid to the Distributor or any authorized broker-dealer for any transaction pursuant to the exchange privilege.

**Transfers of Shares.** In the event a shareholder requests a transfer of Fund shares to a new registration, the shares will be transferred without sales charge at the time of transfer. With regard to the status of shares which are either subject to the CDSC or free of such charge (and with regard to the length of time shares subject to the charge have been held), any transfer involving less than all of the shares in an account will be made on a pro rata basis (that is, by transferring shares in the same proportion that the transferred shares bear to the total shares in the account immediately prior to the transfer). The transferred shares will continue to be subject to any applicable CDSC as if they had not been so transferred.

**Outside Brokerage Accounts/Limited Portability.** Most Fund shareholders hold their shares with Morgan Stanley Smith Barney LLC. Please note that your ability to transfer your Fund shares to a brokerage account at another securities dealer may be limited. Fund shares may only be transferred to accounts held at securities dealers or Financial Intermediaries. After a transfer, you may purchase additional shares of the Morgan Stanley Fund(s) you owned before the transfer and, in most instances, you will also be able to purchase shares of most other Morgan Stanley Funds. If you transfer shares of a fund that is not a Morgan Stanley Multi-Class Fund (for example, a Morgan Stanley Money Market Fund) you will not be able to exchange shares of that fund for any other Morgan Stanley Fund after the transfer.

If you wish to transfer Fund shares to a securities dealer or other financial intermediary that has not entered into an agreement with the Distributor, you may request that the securities dealer or financial intermediary maintain the shares in an account at the Transfer Agent registered in the name of such securities dealer or financial intermediary for your benefit. You may also hold your Fund shares in your own name directly with the Transfer Agent. In either case, you will continue to have the ability to purchase additional

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Morgan Stanley Funds and will have full exchange privileges. Other options may also be available; please check with the respective securities dealer or financial intermediary. If you choose not to hold your shares with the Transfer Agent, either directly or through a securities dealer or other financial intermediary, you must redeem your shares and pay any applicable CDSC.

**Offering Price**

The Fund's Class I, Class C and Class R6 shares are offered at NAV and the Class A shares are offered at NAV plus any applicable FSC which is distributed among the Fund's Distributor, Morgan Stanley Smith Barney LLC and other Financial Intermediaries as described in "Investment Advisory and Other Services — Rule 12b-1 Plan." The NAV of the Fund (excluding sales charges) is based on the value of the Fund's portfolio securities. NAV of each Class is calculated by dividing the value of the portion of the Fund's securities and other assets attributable to that Class, less the total market value of the liabilities attributable to that Class, by the number of shares of that Class outstanding. The assets of each Class of shares are invested in a single portfolio. The NAV of each Class, however, will differ because the Classes have different ongoing fees.

In the calculation of the Fund's NAV: (1) an equity portfolio security listed or traded on an exchange is valued at its latest reported sale price (or at the exchange official closing price if such exchange reports an official closing price), and if there were no sales on a given day and if there is no official exchange closing price for that day, the security is valued at the mean between the last reported bid and asked prices if such bid and asked prices are available on the relevant exchanges; and (2) all other equity portfolio securities for which OTC market quotations are readily available are valued at the latest reported sale price (or at the market official closing price if such market reports an official closing price), and if there was no trading in the security on a given day and if there is no official closing price from the relevant markets for that day, the security is valued at the mean between the last reported bid and asked prices if such bid and asked prices are available on the relevant markets. Listed equity securities not traded on the valuation date with no reported bid and asked prices available on the exchange are valued at the mean between the current bid and asked prices obtained from one or more reputable brokers or dealers. An unlisted equity security that does not trade on the valuation date and for which bid and asked prices from the relevant markets are unavailable is valued at the mean between the current bid and asked prices obtained from one or more reputable brokers or dealers. In cases where a security is traded on more than one exchange, the security is valued on the exchange designated as the primary market. When no market quotations are readily available for a security or other asset, including circumstances under which the Adviser and/or the Sub-Adviser determines that a market quotation is not accurate, fair value for the security or other asset will be determined in good faith using methods approved by the Fund's Board of Trustees. For valuation purposes, quotations of foreign portfolio securities, other assets and liabilities and forward contracts stated in foreign currency are translated into U.S. dollar equivalents at the prevailing market rates prior to the close of the NYSE. On any business day when the Securities Industry and Financial Markets Association recommends that the securities markets close trading early, the Fund may close trading early and determine NAV as of an earlier time.

If the NYSE is closed due to inclement weather, technology problems or any other reason on a day it would normally be open for business, or the NYSE has an unscheduled early closing on a day it has opened for business, the Fund reserves the right to treat such day as a business day and accept purchase and redemption orders until, and calculate its NAV as of, the normally scheduled close of regular trading on the NYSE for that day, so long as the Adviser believes there generally remains an adequate market to obtain reliable and accurate market quotations.

Certain of the Fund's portfolio securities may be valued using as an input evaluated prices provided by an outside pricing service approved by the Fund's Board. Prices obtained from these approved sources are monitored and reviewed by the Adviser's Valuation Committee and if not deemed to represent fair value, may be overridden and valued using procedures adopted by the Board. The pricing service may utilize a matrix system or other model incorporating attributes such as security quality, maturity and coupon as the evaluation model parameters, and/or research evaluations by its staff, including review of broker-dealer market price quotations in determining what it believes is the fair valuation of the portfolio securities valued by such pricing service. Pricing services generally value securities assuming orderly transactions of an institutional round lot size, but the Fund may hold or transact in such securities in smaller, odd lot sizes. Odd lots often trade at lower prices than institutional round lots.

Listed options are valued at the last reported sales price on the exchange on which they are listed (or at the exchange official closing price if such exchange reports an official closing price). If an official closing price or last reported sale price is unavailable, the listed option should be fair valued at the mean between its latest bid and ask prices. If an exchange closing price or bid and asked prices are not available from the exchange, then the quotes from one or more brokers or dealers may be used. Unlisted options and swaps are valued by an outside pricing service approved by the Board or quotes from a broker or dealer. Unlisted options and swaps cleared on a clearinghouse or exchange may be valued using the closing price provided by the clearinghouse or exchange. Futures are valued at the settlement price on the exchange on which they trade or, if a settlement price is unavailable, then at the last sale price on the exchange.

If the Adviser determines that the valuation received from the outside pricing service or broker or dealer is not reflective of the security's market value, such security is valued at its fair value as determined in good faith under procedures established by and under the general supervision of the Board.

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Generally, trading in foreign securities, as well as corporate bonds, U.S. government securities and money market instruments, is substantially completed each day at various times prior to the close of the NYSE. The values of such securities used in computing the NAV of the Fund are determined as of such times. Foreign currency exchange rates are also generally determined prior to the close of the NYSE. Occasionally, events which may affect the values of such securities and such exchange rates may occur between the times at which they are determined and the close of the NYSE. If events that may affect the value of such securities occur during such period, then these securities may be valued at their fair value as determined in good faith under procedures established by and under the supervision of the Board.

In general, fair value represents a good faith approximation of the current value of an asset and may be used when there is no public market or possibly no market at all for an asset. A security that is fair valued may be valued at a price higher or lower than actual market quotations or the value determined by other funds using their own fair valuation procedures or by other investors. The fair value of an asset may not be the price at which that asset is ultimately sold.

The Fund relies on various sources to calculate its NAV. The ability of the Fund to calculate the NAV per share of the Fund is subject to operational risks associated with processing or human errors, systems or technology failures, cyber attacks and errors caused by third party service providers, data sources, or trading counterparties. Such failures may result in delays in the calculation of the Fund's NAV and/or the inability to calculate NAV over extended time periods. The Fund may be unable to recover any losses associated with such failures. In addition, if the third-party service providers and/or data sources upon which the Fund directly or indirectly relies to calculate its NAV or price individual securities are unavailable or otherwise unable to calculate the NAV correctly, it may be necessary for alternative procedures to be utilized to price the securities at the time of determining the Fund's NAV.

**TAXES**

The Fund generally will make two basic types of distributions: ordinary dividends and long-term capital gain distributions. These two types of distributions are reported differently on a shareholder's income tax return. The tax treatment of the investment activities of the Fund will affect the amount, timing and character of the distributions made by the Fund. The following discussion is only a summary of certain tax considerations generally affecting the Fund and shareholders of the Fund and is not intended as a substitute for careful tax planning. Tax issues relating to the Fund are not generally a consideration for shareholders such as tax-exempt entities and tax-advantaged retirement vehicles such as an IRA or 401(k) plan. Shareholders are urged to consult their own tax professionals regarding specific questions as to federal, state or local taxes.

**Investment Company Taxation.** The Fund intends to continue to qualify as a regulated investment company under Subchapter M of the Code. To continue to so qualify, the Fund will be required to, among other things, satisfy an asset diversification test, a qualifying income test and a distribution test. Assuming the Fund satisfies the foregoing requirements, the Fund will not be subject to federal income tax on its net investment income and capital gains, if any, to the extent that it timely distributes such income and capital gains to its shareholders. If the Fund fails to qualify for any taxable year as a regulated investment company, all of its taxable income will be subject to tax at regular corporate income tax rates without any deduction for distributions to shareholders, and such distributions generally will be taxable to shareholders as ordinary dividends to the extent of the Fund's current and accumulated earnings and profits.

The Fund generally intends to distribute sufficient income and gains so that the Fund will not pay corporate income tax on its earnings. The Fund also generally intends to distribute to its shareholders in each calendar year a sufficient amount of ordinary income and capital gains to avoid the imposition of a 4% excise tax. However, the Fund may instead determine to retain all or part of any income or net long-term capital gains in any year for reinvestment. In such event, the Fund will pay federal income tax (and possibly excise tax) on such retained income or gains.

Gains or losses on sales of securities by the Fund will generally be long-term capital gains or losses if the securities have a tax holding period of more than one year at the time of such sale. Gains or losses on the sale of securities with a tax holding period of one year or less will be short-term capital gains or losses. Special tax rules may change the normal treatment of gains and losses recognized by the Fund when the Fund invests in foreign exchange forward contracts, options, futures transactions and non-U.S. corporations classified as "passive foreign investment companies." Those special tax rules can, among other things, affect the treatment of capital gain or loss as long-term or short-term and may result in ordinary income or loss rather than capital gain or loss. The application of these special rules would therefore also affect the character of distributions made by the Fund.

The Fund may make investments in which it recognizes income or gain prior to receiving cash with respect to such investment. For example, under certain tax rules, the Fund may be required to accrue a portion of any discount at which certain securities are purchased as income each year even though the Fund receives no payments in cash on the security during the year. To the extent that the Fund makes such investments, it generally would be required to pay out such income or gain as a distribution in each year to avoid taxation at the Fund level. Such distributions will be made from the available cash of the Fund or by liquidation of portfolio securities if necessary. If a distribution of cash necessitates the liquidation of portfolio securities, the Adviser will select which

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securities to sell. The Fund may realize a gain or loss from such sales. In the event the Fund realizes net capital gains from such transactions, its shareholders may receive a larger capital gain distribution, if any, than they would in the absence of such transactions.

The Fund may hold residual interests in REMICs. A portion of the net income allocable to REMIC residual interest holders may be an "excess inclusion." Under Treasury regulations not yet issued, but that may apply retroactively, excess inclusion income of the Fund will be subject to federal income tax in all events. These regulations are expected to provide that excess inclusion income of a regulated investment company, such as the Fund, will be allocated to shareholders of the regulated investment company in proportion to the dividends received by shareholders, with the same consequences as if shareholders held the related REMIC residual interest directly.

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 to entities (including a qualified pension plan, an individual retirement account, a 401(k) plan, a Keogh plan or other tax-exempt entity) subject to tax on unrelated business income, thereby potentially requiring such an entity that is allocated excess inclusion income, and that 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.

If at any time during any taxable year a "disqualified organization" (as defined in the Code) is a record holder of a share in a regulated investment company, then the regulated investment company will be subject to a tax equal to that portion of its excess inclusion income for the taxable year that is allocable to the disqualified organization, multiplied by the highest federal income tax rate imposed on corporations. It is not expected that a substantial portion of the Fund's assets will be residual interests in REMICs.

**Taxation of Dividends and Distributions.** Shareholders normally will be subject to federal income taxes on the dividends and other distributions they receive from the Fund. Such distributions also may be subject to state and local income tax. However, dividends attributable to interest earned on direct obligations of the U.S. government may be exempt from state and local taxes. Such dividends and distributions, to the extent that they are derived from net investment income or short-term capital gains, are generally taxable to the shareholder as ordinary income regardless of whether the shareholder receives such payments in additional shares or in cash. The Fund does not anticipate that it will make distributions eligible for the reduced rate of taxation applicable to qualified dividend income or for the corporate dividends received reduction.

Distributions of net long-term capital gains, if any, are taxable to shareholders as long-term capital gains regardless of how long a shareholder has held the Fund's shares and regardless of whether the distribution is received in additional shares or in cash. The maximum individual rate applicable to and long-term capital gains is generally either 15% or 20%, depending on whether the individual's income exceeds certain threshold amounts.

Shareholders are generally taxed on any income dividend or capital gain distributions from the Fund in the year they are actually distributed. However, if any such dividends or distributions are declared in October, November or December and paid to shareholders of record of such month in January then such amounts will be treated for tax purposes as received by the shareholders on December 31.

Certain distributions reported by the Fund as section 163(j) interest dividends may be treated as interest income by shareholders for purposes of the tax rules applicable to interest expense limitations under Code section 163(j). Such treatment by the shareholder is generally subject to holding period requirements and other potential limitations, although the holding period requirements are generally not applicable to dividends declared by money market funds and certain other funds that declare dividends daily and pay such dividends on a monthly or more frequent basis. The amount that the Fund is eligible to report as a Section 163(j) dividend for a tax year is generally limited to the excess of the Fund's business interest income over the sum of the Fund's (i) business interest expense and (ii) other deductions properly allocable to the Fund's business interest income.

An additional 3.8% Medicare tax is imposed on certain net investment income (including ordinary dividends and capital gain distributions received from the Fund and net gains from redemptions or other taxable dispositions of Fund shares) of U.S. individuals, estates and trusts to the extent that such person's "modified adjusted gross income" (in the case of an individual) or "adjusted gross income" (in the case of an estate or trust) exceeds certain threshold amounts.

Shareholders who are not citizens or residents of the United States and certain foreign entities will generally be subject to withholding of U.S. tax of 30% (or such lower treaty rate as may be applicable) on distributions made by the Fund of investment income. Foreign shareholders will generally be exempt from U.S. federal income tax on gains realized on the sale of shares of the Fund, distributions of net long-term capital gains and amounts retained by the Fund that are reported as undistributed capital gains. Dividends paid by the Fund that are derived from short-term capital gains and qualifying U.S. source net interest income (including income from original issue discount), and that are reported by the Fund as "interest-related dividends" or "short-term capital gain dividends," will generally not be subject to U.S. withholding tax. However, depending on the circumstances, the Fund may designate all, some or none of the Fund's potentially eligible dividends as exempt. Such investors are urged to consult their tax advisors regarding the tax consequences to them of dividends and distributions and the potential applicability of the U.S. estate tax.

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The Fund is required to withhold U.S. tax (at a 30% rate) on payments of taxable dividends made to certain non-U.S. entities that fail to comply (or be deemed compliant) with extensive new reporting and withholding requirements designed to inform the U.S. Department of the Treasury of U.S.-owned foreign investment accounts. Shareholders may be requested to provide additional information to the Fund to enable the Fund to determine whether withholding is required.

After the end of each calendar year, shareholders will be sent information on their dividends and capital gain distributions for tax purposes, including the portion taxable as ordinary income, the portion taxable as long-term capital gains and the amount of any dividends eligible for the federal dividends received deduction for corporations.

**Purchases and Redemptions and Exchanges of Fund Shares.** Any dividend or capital gains distribution received by a shareholder from any investment company will have the effect of reducing the NAV of the shareholder's stock in that company by the exact amount of the dividend or capital gains distribution. Furthermore, such dividends and capital gains distributions are subject to federal income taxes. If the NAV of the shares should be reduced below a shareholder's cost as a result of the payment of dividends or the distribution of realized long-term capital gains, such payment or distribution would be in part a return of the shareholder's investment but nonetheless would be taxable to the shareholder. Therefore, an investor should consider the tax implications of purchasing Fund shares immediately prior to a distribution record date.

Shareholders normally will be subject to federal income taxes, and state and/or local income taxes, on the sale or disposition of Fund shares. In general, a sale of shares results in capital gain or loss, and for individual shareholders, is taxable at a federal rate dependent upon the length of time the shares were held. A redemption of a shareholder's Fund shares is normally treated as a sale for tax purposes. Fund shares held for a period of one year or less at the time of such sale or redemption will, for tax purposes, generally result in short-term capital gains or losses and those held for more than one year will generally result in long-term capital gains or losses. The maximum individual rate applicable to long-term capital gains is generally either 15% or 20%, depending on whether the individual's income exceeds certain threshold amounts. Any loss realized by shareholders upon a sale or redemption of shares within six months of the date of their purchase will be treated as a long-term capital loss to the extent of any distributions of net long-term capital gains with respect to such shares during the six-month period.

Gain or loss on the sale or redemption of shares in the Fund is measured by the difference between the amount of cash received (or the fair market value of any property received) and the adjusted tax basis of the shares. Shareholders should keep records of investments made (including shares acquired through reinvestment of dividends and distributions) so they can compute the tax basis of their shares. Under certain circumstances, a shareholder may compute and use an average cost basis in determining the gain or loss on the sale or redemption of shares.

The Fund (or its administrative agent) is required to report to the U.S. Internal Revenue Service ("IRS") and furnish to Fund shareholders the cost basis information for sale transactions of shares purchased on or after January 1, 2012. Shareholders may elect to have one of several cost basis methods applied to their account when calculating the cost basis of shares sold, including average cost, FIFO ("first-in, first-out"), or some other specific identification method. Unless you instruct otherwise, the Fund will use average cost as its default cost basis method, and will treat sales as first coming from shares purchased prior to January 1, 2012. If average cost is used for the first sale of Fund shares covered by these new rules, the shareholder may only use an alternative cost basis method for shares purchased prospectively. Fund shareholders should consult with their tax advisors to determine the best cost basis method for their tax situation.

Exchanges of Fund shares for shares of another fund, including shares of other Morgan Stanley Funds, are also subject to similar tax treatment. Such an exchange is treated for tax purposes as a sale of the original shares in the Fund, followed by the purchase of shares in the other fund.

The ability to deduct capital losses may be limited. In addition, if a shareholder realizes a loss on the redemption or exchange of a fund's shares and receives securities that are considered substantially identical to that fund's shares or reinvests in that fund's shares or substantially identical shares within 30 days before or after the redemption or exchange, the transactions may be subject to the "wash sale" rules, resulting in a postponement of the recognition of such loss for tax purposes.

**Backup Withholding.** The Fund may be required to withhold U.S. federal income tax (currently, at a rate of 24%) ("backup withholding") from all taxable distributions payable to (1) any shareholder who fails to furnish the Fund with its correct taxpayer identification number or a certificate that the shareholder is exempt from backup withholding, and (2) any shareholder with respect to whom the IRS notifies the Fund that the shareholder has failed to properly report certain interest and dividend income to the IRS and to respond to notices to that effect. An individual's taxpayer identification number is his or her social security number. The 24% backup withholding tax is not an additional tax and may be credited against a taxpayer's regular federal income tax liability.

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**UNDERWRITERS**

The Fund's shares are offered to the public on a continuous basis. The Distributor, as the principal underwriter of the shares, has certain obligations under the Distribution Agreement concerning the distribution of the shares. These obligations and the compensation the Distributor receives are described above in the sections titled "Principal Underwriter" and "Rule 12b-1 Plan."

**PERFORMANCE DATA**

For the 30-day period ended October 31, 2022, the yield was 5.02%, 4.89%, 5.49%, 4.39%, and 5.55% for Class A, Class L, Class I, Class C and Class R6, respectively. Effective April 29, 2022, Class IS shares were renamed Class R6 shares.

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Average annual returns assuming deduction of maximum sales charge**<br>**Period Ended October 31, 2022** | **Average annual returns assuming deduction of maximum sales charge**<br>**Period Ended October 31, 2022** | **Average annual returns assuming deduction of maximum sales charge**<br>**Period Ended October 31, 2022** | **Average annual returns assuming deduction of maximum sales charge**<br>**Period Ended October 31, 2022** | **Average annual returns assuming deduction of maximum sales charge**<br>**Period Ended October 31, 2022** | **Average annual returns assuming deduction of maximum sales charge**<br>**Period Ended October 31, 2022** |
| **Class** | **Inception Date** | **1 Year** | **5 Years** | **10 Years** | **Life of Fund** |
| Class A | 07/28/97 | -13.68% | -0.51% | 1.99% | 3.64% |
| Class L | 07/28/97 | -10.90% | -0.09% | 2.06% | 3.25% |
| Class I | 07/28/97 | -10.33% | 0.54% | 2.72% | 4.00% |
| Class C | 04/30/15 | -12.32% | -0.60% | N/A | 0.82% |
| Class R6 | 06/15/18 | -10.41% | N/A | N/A | 0.50% |

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Average annual returns assuming NO deduction of sales charge**<br>**Period Ended October 31, 2022** | **Average annual returns assuming NO deduction of sales charge**<br>**Period Ended October 31, 2022** | **Average annual returns assuming NO deduction of sales charge**<br>**Period Ended October 31, 2022** | **Average annual returns assuming NO deduction of sales charge**<br>**Period Ended October 31, 2022** | **Average annual returns assuming NO deduction of sales charge**<br>**Period Ended October 31, 2022** | **Average annual returns assuming NO deduction of sales charge**<br>**Period Ended October 31, 2022** |
| **Class** | **Inception Date** | **1 Year** | **5 Years** | **10 Years** | **Life of Fund** |
| Class A | 07/28/97 | -10.77% | 0.15% | 2.33% | 3.78% |
| Class L | 07/28/97 | -10.90% | -0.09% | 2.06% | 3.25% |
| Class I | 07/28/97 | -10.33% | 0.54% | 2.72% | 4.00% |
| Class C | 04/30/15 | -11.46% | -0.60% | N/A | 0.82% |
| Class R6 | 06/15/18 | -10.41% | N/A | N/A | 0.50% |

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Aggregate total returns assuming NO deduction of sales charge**<br>**Period Ended October 31, 2022** | **Aggregate total returns assuming NO deduction of sales charge**<br>**Period Ended October 31, 2022** | **Aggregate total returns assuming NO deduction of sales charge**<br>**Period Ended October 31, 2022** | **Aggregate total returns assuming NO deduction of sales charge**<br>**Period Ended October 31, 2022** | **Aggregate total returns assuming NO deduction of sales charge**<br>**Period Ended October 31, 2022** | **Aggregate total returns assuming NO deduction of sales charge**<br>**Period Ended October 31, 2022** |
| **Class** | **Inception Date** | **1 Year** | **5 Years** | **10 Years** | **Life of Fund** |
| Class A | 07/28/97 | -10.77% | 0.73% | 25.87% | 155.30% |
| Class L | 07/28/97 | -10.90% | -0.46% | 22.59% | 124.18% |
| Class I | 07/28/97 | -10.33% | 2.75% | 30.82% | 169.41% |
| Class C | 04/30/15 | -11.46% | -2.97% | N/A | 6.35% |
| Class R6 | 06/15/18 | -10.41% | N/A | N/A | 2.20% |

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Average annual after-tax returns assuming deduction of maximum sales charge**<br>**Class A**<br>**Period Ended October 31, 2022** | **Average annual after-tax returns assuming deduction of maximum sales charge**<br>**Class A**<br>**Period Ended October 31, 2022** | **Average annual after-tax returns assuming deduction of maximum sales charge**<br>**Class A**<br>**Period Ended October 31, 2022** | **Average annual after-tax returns assuming deduction of maximum sales charge**<br>**Class A**<br>**Period Ended October 31, 2022** | **Average annual after-tax returns assuming deduction of maximum sales charge**<br>**Class A**<br>**Period Ended October 31, 2022** | **Average annual after-tax returns assuming deduction of maximum sales charge**<br>**Class A**<br>**Period Ended October 31, 2022** |
| **Calculation Methodology** | **Inception Date** | **1 Year** | **5 Years** | **10 Years** | **Life of Fund** |
| After taxes on distributions | 07/28/97 | -14.81% | -1.79% | 0.21% | 1.82% |
| After taxes on distributions and redemptions | 07/28/97 | -8.06% | -0.88% | 0.74% | 2.04% |

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**POTENTIAL CONFLICTS OF INTEREST**

As a diversified global financial services firm, Morgan Stanley, the parent company of the Adviser, engages in a broad spectrum of activities, including financial advisory services, investment management activities, lending, commercial banking, sponsoring and managing private investment funds, engaging in broker-dealer transactions and principal securities, commodities and foreign exchange transactions, research publication and other activities. In the ordinary course of its business, Morgan Stanley is a full-service investment banking and financial services firm and therefore engages in activities where Morgan Stanley's interests or the interests of its clients may conflict with the interests of the Fund. Morgan Stanley advises clients and sponsors, manages or advises other investment funds and investment programs, accounts and businesses (collectively, together with the Morgan Stanley Funds, any new or successor funds, programs, accounts or businesses (other than funds, programs, accounts or businesses sponsored, managed, or advised by former direct or indirect subsidiaries of Eaton Vance Corp. ("Eaton Vance Investment Accounts")), the ''MS Investment Accounts", and, together with the Eaton Vance Investment Accounts, the "Affiliated Investment Accounts'') with a wide variety of investment objectives that in some instances may overlap or conflict with the Fund's investment objectives and present conflicts of interest. In addition, Morgan Stanley or the Adviser may also from time to time create new or successor Affiliated Investment Accounts that may compete with the Fund and present similar conflicts of interest. The discussion below enumerates certain actual, apparent and potential conflicts of interest. There is no assurance that conflicts of interest will be resolved in favor of Fund shareholders and, in fact, they may not be. Conflicts of interest not described below may also exist.

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The discussions below with respect to actual, apparent and potential conflicts of interest also may be applicable to or arise from the Eaton Vance Investment Accounts whether or not specifically identified.

**Material Non-public and Other Information.** It is expected that confidential or material non-public information regarding an investment or potential investment opportunity may become available to the Adviser. If such information becomes available, the Adviser may be precluded (including by applicable law or internal policies or procedures) from pursuing an investment or disposition opportunity with respect to such investment or investment opportunity. The Adviser may also from time to time be subject to contractual ''stand-still'' obligations and/or confidentiality obligations that may restrict its ability to trade in certain investments on the Fund's behalf. In addition, the Adviser may be precluded from disclosing such information to an investment team, even in circumstances in which the information would be beneficial if disclosed. Therefore, the investment team may not be provided access to material non-public information in the possession of Morgan Stanley that might be relevant to an investment decision to be made on behalf of the Fund, and the investment team may initiate a transaction or sell an investment that, if such information had been known to it, may not have been undertaken. In addition, certain members of the investment team may be recused from certain investment-related discussions so that such members do not receive information that would limit their ability to perform functions of their employment with the Adviser or its affiliates unrelated to that of the Fund. Furthermore, access to certain parts of Morgan Stanley may be subject to third party confidentiality obligations and to information barriers established by Morgan Stanley in order to manage potential conflicts of interest and regulatory restrictions, including without limitation joint transaction restrictions pursuant to the 1940 Act. Accordingly, the Adviser's ability to source investments from other business units within Morgan Stanley may be limited and there can be no assurance that the Adviser will be able to source any investments from any one or more parts of the Morgan Stanley network.

The Adviser may restrict its investment decisions and activities on behalf of the Fund in various circumstances, including because of applicable regulatory requirements or information held by the Adviser or Morgan Stanley. The Adviser might not engage in transactions or other activities for, or enforce certain rights in favor of, the Fund due to Morgan Stanley's activities outside the Fund. In instances where trading of an investment is restricted, the Adviser may not be able to purchase or sell such investment on behalf of the Fund, resulting in the Fund's inability to participate in certain desirable transactions. This inability to buy or sell an investment could have an adverse effect on the Fund's portfolio due to, among other things, changes in an investment's value during the period its trading is restricted. Also, in situations where the Adviser is required to aggregate its positions with those of other Morgan Stanley business units for position limit calculations, the Adviser may have to refrain from making investments due to the positions held by other Morgan Stanley business units or their clients. There may be other situations where the Adviser refrains from making an investment due to additional disclosure obligations, regulatory requirements, policies, and reputational risk, or the Adviser may limit purchases or sales of securities in respect of which Morgan Stanley is engaged in an underwriting or other distribution capacity.

Morgan Stanley has established certain information barriers and other policies to address the sharing of information between different businesses within Morgan Stanley. As a result of information barriers, the Adviser generally will not have access, or will have limited access, to certain information and personnel in other areas of Morgan Stanley and generally will not manage the Fund with the benefit of the information held by such other areas. Morgan Stanley, due to its access to and knowledge of funds, markets and securities based on its prime brokerage and other businesses, may make decisions based on information or take (or refrain from taking) actions with respect to interests in investments of the kind held (directly or indirectly) by the Fund in a manner that may be adverse to the Fund, and will not have any obligation or other duty to share information with the Adviser.

In limited circumstances, however, including for purposes of managing business and reputational risk, and subject to policies and procedures and any applicable regulations, Morgan Stanley personnel, including personnel of the Adviser, on one side of an information barrier may have access to information and personnel on the other side of the information barrier through "wall crossings." The Adviser faces conflicts of interest in determining whether to engage in such wall crossings. Information obtained in connection with such wall crossings may limit or restrict the ability of the Adviser to engage in or otherwise effect transactions on behalf of the Fund (including purchasing or selling securities that the Adviser may otherwise have purchased or sold for the Fund in the absence of a wall crossing). In managing conflicts of interest that arise because of the foregoing, the Adviser generally will be subject to fiduciary requirements. The Adviser may also implement internal information barriers or ethical walls, and the conflicts described herein with respect to information barriers and otherwise with respect to Morgan Stanley and the Adviser will also apply internally within the Adviser. As a result, the Fund may not be permitted to transact in (e.g., dispose of a security in whole or in part) during periods when it otherwise would have been able to do so, which could adversely affect the Fund. Other investors in the security that are not subject to such restrictions may be able to transact in the security during such periods. There may also be circumstances in which, as a result of information held by certain portfolio management teams in the Adviser, the Adviser limits an activity or transaction for the Fund, including if the Fund is managed by a portfolio management team other than the team holding such information.

**Investments by Morgan Stanley and its Affiliated Investment Accounts.** In serving in multiple capacities to Affiliated Investment Accounts, Morgan Stanley, including the Adviser and its investment teams, may have obligations to other clients or investors in Affiliated Investment Accounts, the fulfillment of which may not be in the best interests of the Fund or its shareholders. The Fund's

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investment objectives may overlap with the investment objectives of certain Affiliated Investment Accounts. As a result, the members of an investment team may face conflicts in the allocation of investment opportunities among the Fund and other investment funds, programs, accounts and businesses advised by or affiliated with the Adviser. Certain Affiliated Investment Accounts may provide for higher management or incentive fees or greater expense reimbursements or overhead allocations, all of which may contribute to this conflict of interest and create an incentive for the Adviser to favor such other accounts.

Morgan Stanley currently invests and plans to continue to invest on its own behalf and on behalf of its Affiliated Investment Accounts in a wide variety of investment opportunities globally. Morgan Stanley and its Affiliated Investment Accounts, to the extent consistent with applicable law and policies and procedures, will be permitted to invest in investment opportunities without making such opportunities available to the Fund beforehand. Subject to the foregoing, Morgan Stanley may offer investments that fall into the investment objectives of an Affiliated Investment Account to such account or make such investment on its own behalf, even though such investment also falls within the Fund's investment objectives. The Fund may invest in opportunities that Morgan Stanley and/or one or more Affiliated Investment Accounts has declined, and vice versa. All of the foregoing may reduce the number of investment opportunities available to the Fund and may create conflicts of interest in allocating investment opportunities. Investors should note that the conflicts inherent in making such allocation decisions may not always be resolved to the Fund's advantage. There can be no assurance that the Fund will have an opportunity to participate in certain opportunities that fall within their investment objectives.

To seek to reduce potential conflicts of interest and to attempt to allocate such investment opportunities in a fair and equitable manner, the Adviser has implemented allocation policies and procedures. These policies and procedures are intended to give all clients of the Adviser, including the Fund, fair access to investment opportunities consistent with the requirements of organizational documents, investment strategies, applicable laws and regulations, and the fiduciary duties of the Adviser. Each client of the Adviser that is subject to the allocation policies and procedures, including the Fund, is assigned an investment team and portfolio manager(s) by the Adviser. The investment team and portfolio managers review investment opportunities and will decide with respect to the allocation of each opportunity considering various factors and in accordance with the allocation policies and procedures. The allocation policies and procedures are subject to change. Investors should note that the conflicts inherent in making such allocation decisions may not always be resolved to the advantage of the Fund.

It is possible that Morgan Stanley or an Affiliated Investment Account, including another Morgan Stanley Fund, will invest in or advise (in the case of Morgan Stanley) a company that is or becomes a competitor of a company of which the Fund holds an investment. Such investment could create a conflict between the Fund, on the one hand, and Morgan Stanley or the Affiliated Investment Account, on the other hand. In such a situation, Morgan Stanley may also have a conflict in the allocation of its own resources to the portfolio investment. Furthermore, certain Affiliated Investment Accounts will be focused primarily on investing in other funds which may have strategies that overlap and/or directly conflict and compete with the Fund.

In addition, certain investment professionals who are involved in the Fund's activities remain responsible for the investment activities of other Affiliated Investment Accounts managed by the Adviser and its affiliates, and they will devote time to the management of such investments and other newly created Affiliated Investment Accounts (whether in the form of funds, separate accounts or other vehicles), as well as their own investments. In addition, in connection with the management of investments for other Affiliated Investment Accounts, members of Morgan Stanley and its affiliates may serve on the boards of directors of or advise companies which may compete with the Fund's portfolio investments. Moreover, these Affiliated Investment Accounts managed by Morgan Stanley and its affiliates may pursue investment opportunities that may also be suitable for the Fund.

It should be noted that Morgan Stanley may, directly or indirectly, make large investments in certain of its Affiliated Investment Accounts, and accordingly Morgan Stanley's investment in the Fund may not be a determining factor in the outcome of any of the foregoing conflicts. Nothing herein restricts or in any way limits the activities of Morgan Stanley, including its ability to buy or sell interests in, or provide financing to, equity and/or debt instruments, funds or portfolio companies, for its own accounts or for the accounts of Affiliated Investment Accounts or other investment funds or clients in accordance with applicable law.

Different clients of the Adviser, including the Fund, may invest in different classes of securities of the same issuer, depending on the respective clients' investment objectives and policies. As a result, the Adviser and its affiliates, at times, will seek to satisfy fiduciary obligations to certain clients owning one class of securities of a particular issuer by pursuing or enforcing rights on behalf of those clients with respect to such class of securities, and those activities may have an adverse effect on another client which owns a different class of securities of such issuer. For example, if one client holds debt securities of an issuer and another client holds equity securities of the same issuer, if the issuer experiences financial or operational challenges, the Adviser and its affiliates may seek a liquidation of the issuer on behalf of the client that holds the debt securities, whereas the client holding the equity securities may benefit from a reorganization of the issuer. Thus, in such situations, the actions taken by the Adviser or its affiliates on behalf of one client can negatively impact securities held by another client. These conflicts also exist as between the Adviser's clients, including the Fund, and the Affiliated Investment Accounts managed by Eaton Vance.

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The Adviser and its affiliates may give advice and recommend securities to other clients which may differ from advice given to, or securities recommended or bought for, the Fund even though such other clients' investment objectives may be similar to those of the Fund.

The Adviser and its affiliates manage long and short portfolios. The simultaneous management of long and short portfolios creates conflicts of interest in portfolio management and trading in that opposite directional positions may be taken in client accounts, including client accounts managed by the same investment team, and creates risks such as: (i) the risk that short sale activity could adversely affect the market value of long positions in one or more portfolios (and vice versa) and (ii) the risks associated with the trading desk receiving opposing orders in the same security simultaneously. The Adviser and its affiliates have adopted policies and procedures that are reasonably designed to mitigate these conflicts. In certain circumstances, the Adviser invests on behalf of itself in securities and other instruments that would be appropriate for, held by, or may fall within the investment guidelines of its clients, including the Fund. At times, the Adviser may give advice or take action for its own accounts that differs from, conflicts with, or is adverse to advice given or action taken for any client.

From time to time, conflicts also arise due to the fact that certain securities or instruments may be held in some client accounts, including the Fund, but not in others, or that client accounts may have different levels of holdings in certain securities or instruments. In addition, due to differences in the investment strategies or restrictions among client accounts, the Adviser may take action with respect to one account that differs from the action taken with respect to another account. In some cases, a client account may compensate the Adviser based on the performance of the securities held by that account. The existence of such a performance based fee may create additional conflicts of interest for the Adviser in the allocation of management time, resources and investment opportunities. The Adviser has adopted several policies and procedures designed to address these potential conflicts including a code of ethics and policies that govern the Adviser's trading practices, including, among other things, the aggregation and allocation of trades among clients, brokerage allocations, cross trades and best execution.

In addition, at times an investment team will give advice or take action with respect to the investments of one or more clients that is not given or taken with respect to other clients with similar investment programs, objectives, and strategies. Accordingly, clients with similar strategies will not always hold the same securities or instruments or achieve the same performance. The Adviser's investment teams also advise clients with conflicting programs, objectives or strategies. These conflicts also exist as between the Adviser's clients, including the Fund, and the Affiliated Investment Accounts managed by Eaton Vance.

Morgan Stanley and its affiliates maintain separate trading desks that operate independently of each other and do not share information with the Adviser. The Morgan Stanley and affiliate trading desks may compete against the Adviser trading desks when implementing buy and sell transactions, possibly causing certain Affiliated Investment Accounts to pay more or receive less for a security than other Affiliated Investment Accounts.

**Investments by Separate Investment Departments.** The entities and individuals that provide investment-related services for the Fund and certain other MS Investment Accounts (the "MS Investment Department") may be different from the entities and individuals that provide investment-related services to Eaton Vance Investment Accounts (the "Eaton Vance Investment Department" and, together with the MS Investment Department, the "Investment Departments"). Although Morgan Stanley has implemented information barriers between the Investment Departments in accordance with internal policies and procedures, each Investment Department may engage in discussions and share information and resources with the other Investment Department on certain investment-related matters. The sharing of information and resources between the Investment Departments is designed to further increase the knowledge and effectiveness of each Investment Department. Because each Investment Department generally makes investment decisions and executes trades independently of the other, the quality and price of execution, and the performance of investments and accounts, can be expected to vary. In addition, each Investment Department may use different trading systems and technology and may employ differing investment and trading strategies. As a result, an Eaton Vance Investment Account could trade in advance of the Fund (and vice versa), might complete trades more quickly and efficiently than the Fund, and/or achieve different execution than the Fund on the same or similar investments made contemporaneously, even when the Investment Departments shared research and viewpoints that led to that investment decision. Any sharing of information or resources between the Investment Department servicing the Fund and the Eaton Vance Investment Department may result, from time to time, in the Fund simultaneously or contemporaneously seeking to engage in the same or similar transactions as an account serviced by the other Investment Department and for which there are limited buyers or sellers on specific securities, which could result in less favorable execution for the Fund than such Affiliated Investment Account. The MS Investment Department will not knowingly or intentionally cause the Fund to engage in a cross trade with an account serviced by the Eaton Vance Investment Department, however, subject to applicable law and internal policies and procedures, the Fund may conduct cross trades with other accounts serviced by the MS Investment Department. Although the MS Investment Department may aggregate the Fund's trades with trades of other accounts serviced by the MS Investment Department, subject to applicable law and internal policies and procedures, there will be no aggregation or coordination of trades with accounts serviced by the Eaton Vance Investment Department, even when both Investment Departments are seeking to acquire or dispose of the same investments contemporaneously.

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**Payments to Broker-Dealers and Other Financial Intermediaries.** The Adviser and/or the Distributor may pay compensation, out of their own funds and not as an expense of the Fund, to certain Financial Intermediaries (which may include affiliates of the Adviser and the Distributor), including recordkeepers and administrators of various deferred compensation plans, in connection with the sale, distribution, marketing and retention of shares of the Fund and/or shareholder servicing. For example, the Adviser or the Distributor may pay additional compensation to a Financial Intermediary for, among other things, promoting the sale and distribution of Fund shares, providing access to various programs, mutual fund platforms or preferred or recommended mutual fund lists that may be offered by a Financial Intermediary, granting the Distributor access to a Financial Intermediary's financial advisors and consultants, providing assistance in the ongoing education and training of a Financial Intermediary's financial personnel, furnishing marketing support, maintaining share balances and/or for sub-accounting, recordkeeping, administrative, shareholder or transaction processing services. Such payments are in addition to any distribution fees, shareholder servicing fees and/or transfer agency fees that may be payable by the Fund. The additional payments may be based on various factors, including level of sales (based on gross or net sales or some specified minimum sales or some other similar criteria related to sales of the Fund and/or some or all other Morgan Stanley Funds), amount of assets invested by the Financial Intermediary's customers (which could include current or aged assets of the Fund and/or some or all other Morgan Stanley Funds), the Fund's advisory fee, some other agreed upon amount or other measures as determined from time to time by the Adviser and/or the Distributor. The amount of these payments may be different for different Financial Intermediaries.

The prospect of receiving, or the receipt of, additional compensation, as described above, by Financial Intermediaries may provide such Financial Intermediaries and their financial advisors and other salespersons with an incentive to favor sales of shares of the Fund over other investment options with respect to which these Financial Intermediaries do not receive additional compensation (or receives lower levels of additional compensation). These payment arrangements, however, will not change the price that an investor pays for shares of the Fund or the amount that the Fund receives to invest on behalf of an investor. Investors may wish to take such payment arrangements into account when considering and evaluating any recommendations relating to Fund shares and should review carefully any disclosures provided by Financial Intermediaries as to their compensation.

In addition, in certain circumstances, the Adviser restricts, limits or reduces the amount of the Fund's investment, or restricts the type of governance or voting rights it acquires or exercises, where the Fund (potentially together with Morgan Stanley) exceeds a certain ownership interest, or possesses certain degrees of voting or control or has other interests.

**Morgan Stanley Trading and Principal Investing Activities.** Notwithstanding anything to the contrary herein, Morgan Stanley will generally conduct its sales and trading businesses, publish research and analysis, and render investment advice without regard for the Fund's holdings, although these activities could have an adverse impact on the value of one or more of the Fund's investments, or could cause Morgan Stanley to have an interest in one or more portfolio investments that is different from, and potentially adverse to that of the Fund. Furthermore, from time to time, the Adviser or its affiliates may invest "seed" capital in the Fund, typically to enable the Fund to commence investment operations and/or achieve sufficient scale. The Adviser and its affiliates may hedge such seed capital exposure by investing in derivatives or other instruments expected to produce offsetting exposure. Such hedging transactions, if any, would occur outside of the Fund.

Morgan Stanley's sales and trading, financing and principal investing businesses (whether or not specifically identified as such, and including Morgan Stanley's trading and principal investing businesses) will not be required to offer any investment opportunities to the Fund. These businesses may encompass, among other things, principal trading activities as well as principal investing.

Morgan Stanley's sales and trading, financing and principal investing businesses have acquired or invested in, and in the future may acquire or invest in, minority and/or majority control positions in equity or debt instruments of diverse public and/or private companies. Such activities may put Morgan Stanley in a position to exercise contractual, voting or creditor rights, or management or other control with respect to securities or loans of portfolio investments or other issuers, and in these instances Morgan Stanley may, in its discretion and subject to applicable law, act to protect its own interests or interests of clients, and not the Fund's interests.

Subject to the limitations of applicable law, the Fund may purchase from or sell assets to, or make investments in, companies in which Morgan Stanley has or may acquire an interest, including as an owner, creditor or counterparty.

**Morgan Stanley's Investment Banking and Other Commercial Activities.** Morgan Stanley advises clients on a variety of mergers, acquisitions, restructuring, bankruptcy and financing transactions. Morgan Stanley may act as an advisor to clients, including other investment funds that may compete with the Fund and with respect to investments that the Fund may hold. Morgan Stanley may give advice and take action with respect to any of its clients or proprietary accounts that may differ from the advice given, or may involve an action of a different timing or nature than the action taken, by the Fund. Morgan Stanley may give advice and provide recommendations to persons competing with the Fund and/or any of the Fund's investments that are contrary to the Fund's best interests and/or the best interests of any of its investments.

Morgan Stanley could be engaged in financial advising, whether on the buy-side or sell-side, or in financing or lending assignments that could result in Morgan Stanley's determining in its discretion or being required to act exclusively on behalf of one or more third parties, which could limit the Fund's ability to transact with respect to one or more existing or potential investments. Morgan Stanley

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may have relationships with third-party funds, companies or investors who may have invested in or may look to invest in portfolio companies, and there could be conflicts between the Fund's best interests, on the one hand, and the interests of a Morgan Stanley client or counterparty, on the other hand.

To the extent that Morgan Stanley advises creditor or debtor companies in the financial restructuring of companies either prior to or after filing for protection under Chapter 11 of the U.S. Bankruptcy Code or similar laws in other jurisdictions, the Adviser's flexibility in making investments in such restructurings on the Fund's behalf may be limited.

Morgan Stanley could provide investment banking services to competitors of portfolio companies, as well as to private equity and/or private credit funds; such activities may present Morgan Stanley with a conflict of interest vis-a-vis the Fund's investment and may also result in a conflict in respect of the allocation of investment banking resources to portfolio companies.

To the extent permitted by applicable law, Morgan Stanley may provide a broad range of financial services to companies in which the Fund invests, including strategic and financial advisory services, interim acquisition financing and other lending and underwriting or placement of securities, and Morgan Stanley generally will be paid fees (that may include warrants or other securities) for such services. Morgan Stanley will not share any of the foregoing interest, fees and other compensation received by it (including, for the avoidance of doubt, amounts received by the Adviser) with the Fund, and any advisory fees payable will not be reduced thereby.

Morgan Stanley may be engaged to act as a financial advisor to a company in connection with the sale of such company, or subsidiaries or divisions thereof, may represent potential buyers of businesses through its mergers and acquisition activities and may provide lending and other related financing services in connection with such transactions. Morgan Stanley's compensation for such activities is usually based upon realized consideration and is usually contingent, in substantial part, upon the closing of the transaction. Under these circumstances, the Fund may be precluded from participating in a transaction with or relating to the company being sold or participating in any financing activity related to merger or acquisition.

The involvement or presence of Morgan Stanley in the investment banking and other commercial activities described above (or the financial markets more broadly) may restrict or otherwise limit investment opportunities that may otherwise be available to the Fund. For example, issuers may hire and compensate Morgan Stanley to provide underwriting, financial advisory, placement agency, brokerage services or other services and, because of limitations imposed by applicable law and regulation, the Fund may be prohibited from buying or selling securities issued by those issuers or participating in related transactions or otherwise limited in its ability to engage in such investments.

**Morgan Stanley's Marketing Activities.** Morgan Stanley is engaged in the business of underwriting, syndicating, brokering, administering, servicing, arranging and advising on the distribution of a wide variety of securities and other investments in which the Fund may invest. Subject to the restrictions of the 1940 Act, including Sections 10(f) and 17(e) thereof, the Fund may invest in transactions in which Morgan Stanley acts as underwriter, placement agent, syndicator, broker, administrative agent, servicer, advisor, arranger or structuring agent and receives fees or other compensation from the sponsors of such products or securities. Any fees earned by Morgan Stanley in such capacity will not be shared with the Adviser or the Fund. Certain conflicts of interest, in addition to the receipt of fees or other compensation, would be inherent in these transactions. Moreover, the interests of one of Morgan Stanley's clients with respect to an issuer of securities in which the Fund has an investment may be adverse to the Adviser's or the Fund's best interests. In conducting the foregoing activities, Morgan Stanley will be acting for its other clients and will have no obligation to act in the Adviser's or the Fund's best interests.

**Client Relationships.** Morgan Stanley has existing and potential relationships with a significant number of corporations, institutions and individuals. In providing services to its clients, Morgan Stanley may face conflicts of interest with respect to activities recommended to or performed for such clients, on the one hand, and the Fund, its shareholders or the entities in which the Fund invests, on the other hand. In addition, these client relationships may present conflicts of interest in determining whether to offer certain investment opportunities to the Fund.

In acting as principal or in providing advisory and other services to its other clients, Morgan Stanley may engage in or recommend activities with respect to a particular matter that conflict with or are different from activities engaged in or recommended by the Adviser on the Fund's behalf.

**Principal Investments.** To the extent permitted by applicable law, there may be situations in which the Fund's interests may conflict with the interests of one or more general accounts of Morgan Stanley and its affiliates or accounts managed by Morgan Stanley or its affiliates. This may occur because these accounts hold public and private debt and equity securities of many issuers which may be or become portfolio companies, or from whom portfolio companies may be acquired.

**Transactions with Portfolio Companies of Affiliated Investment Accounts.** The companies in which the Fund may invest may be counterparties to or participants in agreements, transactions or other arrangements with portfolio companies or other entities of portfolio investments of Affiliated Investment Accounts (for example, a company in which the Fund invests may retain a company in which an Affiliated Investment Account invests to provide services or may acquire an asset from such company or vice versa). Certain of these agreements, transactions and arrangements involve fees, servicing payments, rebates and/or other benefits to Morgan Stanley

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or its affiliates. For example, portfolio entities may, including at the encouragement of Morgan Stanley, enter into agreements regarding group procurement and/or vendor discounts. Morgan Stanley and its affiliates may also participate in these agreements and may realize better pricing or discounts as a result of the participation of portfolio entities. To the extent permitted by applicable law, certain of these agreements may provide for commissions or similar payments and/or discounts or rebates to be paid to a portfolio entity of an Affiliated Investment Account, and such payments or discounts or rebates may also be made directly to Morgan Stanley or its affiliates. Under these arrangements, a particular portfolio company or other entity may benefit to a greater degree than the other participants, and the Morgan Stanley Funds, investment vehicles and accounts (which may or may not include the Fund) that own an interest in such entity will receive a greater relative benefit from the arrangements than the Morgan Stanley Funds, investment vehicles or accounts that do not own an interest therein. Fees and compensation received by portfolio companies of Affiliated Investment Accounts in relation to the foregoing will not be shared with the Fund or offset advisory fees payable.

**Investments in Portfolio Investments of Other Funds.** To the extent permitted by applicable law, when the Fund invests in certain companies or other entities, other funds affiliated with the Adviser may have made or may be making an investment in such companies or other entities. Other funds that have been or may be managed by the Adviser may invest in the companies or other entities in which the Fund has made an investment. Under such circumstances, the Fund and such other funds may have conflicts of interest (e.g., over the terms, exit strategies and related matters, including the exercise of remedies of their respective investments). If the interests held by the Fund are different from (or take priority over) those held by such other funds, the Adviser may be required to make a selection at the time of conflicts between the interests held by such other funds and the interests held by the Fund.

**Allocation of Expenses.** Expenses may be incurred that are attributable to the Fund and one or more other Affiliated Investment Accounts (including in connection with issuers in which the Fund and such other Affiliated Investment Accounts have overlapping investments). The allocation of such expenses among such entities raises potential conflicts of interest. The Adviser and its affiliates intend to allocate such common expenses among the Fund and any such other Affiliated Investment Accounts on a pro rata basis or in such other manner as the Adviser deems to be fair and equitable or in such other manner as may be required by applicable law.

**Temporary Investments.** To more efficiently invest short-term cash balances held by the Fund, the Adviser may invest such balances on an overnight "sweep" basis in shares of one or more money market funds or other short-term vehicles. It is anticipated that the investment adviser to these money market funds or other short-term vehicles may be the Adviser (or an affiliate) to the extent permitted by applicable law, including Rule 12d1-1 under the 1940 Act. In such a case, the affiliated investment adviser may receive asset-based fees in respect of the Fund's investment (which will reduce the net return realized by the Fund).

**Transactions with Affiliates.** The Adviser and any investment sub-adviser might purchase securities from underwriters or placement agents in which a Morgan Stanley affiliate is a member of a syndicate or selling group, as a result of which an affiliate might benefit from the purchase through receipt of a fee or otherwise. Neither the Adviser nor any investment sub-adviser will purchase securities on behalf of the Fund from an affiliate that is acting as a manager of a syndicate or selling group. Purchases by the Adviser on behalf of the Fund from an affiliate acting as a placement agent must meet the requirements of applicable law. Furthermore, Morgan Stanley may face conflicts of interest when the Fund uses service providers affiliated with Morgan Stanley because Morgan Stanley receives greater overall fees when they are used.

**General Process for Potential Conflicts.** All of the transactions described above involve the potential for conflicts of interest between the Adviser, related persons of the Adviser and/or their clients. The Advisers Act, the 1940 Act and ERISA impose certain requirements designed to decrease the possibility of conflicts of interest between an investment adviser and its clients. In some cases, transactions may be permitted subject to fulfillment of certain conditions. Certain other transactions may be prohibited. In addition, the Adviser has instituted policies and procedures designed to prevent conflicts of interest from arising and, when they do arise, to ensure that it effects transactions for clients in a manner that is consistent with its fiduciary duty to its clients and in accordance with applicable law. The Adviser seeks to ensure that potential or actual conflicts of interest are appropriately resolved taking into consideration the overriding best interests of the client.

**FINANCIAL STATEMENTS**

[The Fund's audited financial statements for the fiscal year ended October 31, 2022, including notes thereto, and the report of Ernst & Young LLP, an independent registered public accounting firm, are herein incorporated by reference to the Fund's Annual Report to Shareholders.](https://www.sec.gov/Archives/edgar/data/806564/000110465923001276/tm2229600d5_ncsr.htm)A copy of the Fund's Annual Report to Shareholders must accompany the delivery of this SAI.

**FUND COUNSEL**

Dechert LLP, located at 1095 Avenue of the Americas, New York, NY 10036, acts as the Fund's legal counsel.

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This SAI and the Prospectus do not contain all of the information set forth in the Registration Statement the Fund has filed with the SEC. The complete Registration Statement may be obtained from the SEC.

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**APPENDIX A — MORGAN STANLEY INVESTMENT MANAGEMENT EQUITY PROXY VOTING** **POLICY AND PROCEDURES**

**I. POLICY STATEMENT**

Morgan Stanley Investment Management's policy and procedures for voting proxies, the Equity Proxy Voting Policy and Procedures (the "Policy"), with respect to securities held in the accounts of clients applies to those Morgan Stanley Investment Management ("MSIM") entities that provide discretionary investment management services and for which an MSIM entity has authority to vote proxies<sup>1</sup>. For purposes of this Policy, clients shall include: Morgan Stanley U.S. registered investment companies, other Morgan Stanley pooled investment vehicles, and MSIM separately managed accounts (including accounts for Employee Retirement Income Security ("ERISA") clients and ERISA-equivalent clients). This Policy is reviewed and updated as necessary to address new and evolving proxy voting issues and standards.

The MSIM entities covered by this Policy currently include the following: Morgan Stanley AIP GP LP, Morgan Stanley Investment Management Inc., Morgan Stanley Investment Management Limited, Morgan Stanley Investment Management Company, Morgan Stanley Saudi Arabia, MSIM Fund Management (Ireland) Limited, Morgan Stanley Asia Limited, Morgan Stanley Investment Management (Japan) Co. Limited, Morgan Stanley Investment Management Private Limited, Morgan Stanley Eaton Vance CLO Manager LLC, and, Morgan Stanley Eaton Vance CLO CM LLC (each an "MSIM Affiliate" and collectively referred to as the "MSIM Affiliates" or as "we" below).

Each MSIM Affiliate will use its best efforts to vote proxies as part of its authority to manage, acquire and dispose of account assets.

■ With respect to the U.S. registered investment companies sponsored, managed or advised by any MSIM Affiliate (the "MS Funds"), each MSIM Affiliate will vote proxies under this Policy pursuant to authority granted under its applicable investment advisory agreement or, in the absence of such authority, as authorized by the Board of Directors/Trustees of the MS Funds.

■ For other pooled investment vehicles (e.g., UCITS), each MSIM Affiliate will vote proxies under this Policy pursuant to authority granted under its applicable investment advisory agreement or, in the absence of such authority, as authorized by the relevant governing board.

■ For separately managed accounts (including ERISA and ERISA-equivalent clients), each MSIM Affiliate will vote proxies under this Policy pursuant to authority granted under the applicable investment advisory agreement or investment management agreement. Where an MSIM Affiliate has the authority to vote proxies on behalf of ERISA and ERISA-equivalent clients, the MSIM Affiliate must do so in accordance with its fiduciary duties under ERISA (and the Internal Revenue Code).

■ In certain situations, a client or its fiduciary may reserve the authority to vote proxies for itself or an outside party or may provide an MSIM Affiliate with a statement of proxy voting policy. The MSIM Affiliate will comply with the client's policy.

An MSIM Affiliate will not vote proxies unless the investment management agreement, investment advisory agreement or other authority explicitly authorizes the MSIM Affiliate to vote proxies.

MSIM Affiliates will vote proxies in a prudent and diligent manner and in the best interests of clients, including beneficiaries of and participants in a client's benefit plan(s) for which the MSIM Affiliates manage assets, consistent with the objective of maximizing long-term investment returns ("Client Proxy Standard") and this Policy. In addition to voting proxies of portfolio companies, MSIM routinely engages with, or, in some cases, may engage a third party to engage with, the management or board of companies in which we invest on a range of environmental, social and governance issues. Governance is a window into or proxy for management and board quality. MSIM engages with companies where we have larger positions, voting issues are material or where we believe we can make a positive impact on the governance structure. MSIM's engagement process, through private communication with companies, allows us to understand the governance structures at investee companies and better inform our voting decisions.

1 This Policy does not apply to MSIM's authority to exercise certain decision-making rights associated with investments in loans and other fixed income instruments (collectively, for purposes hereof, "Fixed Income Instruments").

**Retention and Oversight of Outsourced Proxy Voting** - Certain MSIM exchange-traded funds ("ETFs") will follow Calvert Research and Management's ("Calvert") Proxy Voting Policies and Procedures and the Global Proxy Voting Guidelines set forth in Appendix A of the Calvert Proxy Voting Policies and Procedures. MSIM's oversight of Calvert's proxy voting engagement is ongoing pursuant to the 40 Act Fund Service Provider and Vendor Oversight Policy.

**Retention and Oversight of Proxy Advisory Firms** - Institutional Shareholder Services ("ISS") and Glass Lewis (together with other proxy research providers as we may retain from time to time, the "Research Providers") are independent advisers that specialize in providing a variety of fiduciary-level proxy-related services to institutional investment managers, plan sponsors, custodians, consultants, and other institutional investors. The services provided include in-depth research, global issuer analysis, record retention, ballot processing and voting recommendations.

To facilitate proxy voting, MSIM has retained Research Providers to provide company level reports that summarize key data elements contained within an issuer's proxy statement. Although we are aware of the voting recommendations included in the Research Providers' company level reports, these recommendations are not an input into our vote nor is any potential vote prepopulated based on a Research Provider's research. MSIM votes all proxies based on its own proxy voting policies, consultation with the investment

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teams, and in the best interests of each client. In addition to research, MSIM retains ISS to provide vote execution, reporting, and recordkeeping services.

As part of MSIM's ongoing oversight of the Research Providers, MSIM performs periodic due diligence on the Research Providers. Topics of the reviews include, but are not limited to, conflicts of interest, methodologies for developing their policies and vote recommendations, and resources.

**Voting Proxies for Certain Non-U.S. Companies** - Voting proxies of companies located in some jurisdictions may involve several problems that can restrict or prevent the ability to vote such proxies or entail significant costs. These problems include, but are not limited to: (i) proxy statements and ballots being written in a language other than English; (ii) untimely and/or inadequate notice of shareholder meetings; (iii) restrictions on the ability of holders outside the issuer's jurisdiction of organization to exercise votes; (iv) requirements to vote proxies in person; (v) the imposition of restrictions on the sale of the securities for a period of time in proximity to the shareholder meeting; and (vi) requirements to provide local agents with power of attorney to facilitate our voting instructions. As a result, we vote clients' non-U.S. proxies on a best efforts basis only, after weighing the costs and benefits of voting such proxies, consistent with the Client Proxy Standard. ISS has been retained to provide assistance in connection with voting non-U.S. proxies.

**Securities Lending** - MS Funds or any other investment vehicle sponsored, managed or advised by an MSIM affiliate may participate in a securities lending program through a third party provider. The voting rights for shares that are out on loan are transferred to the borrower and therefore, the lender (i.e., an MS Fund or another investment vehicle sponsored, managed or advised by an MSIM affiliate) is not entitled to vote the lent shares at the company meeting. In general, MSIM believes the revenue received from the lending program outweighs the ability to vote and we will not recall shares for the purpose of voting. However, in cases in which MSIM believes the right to vote outweighs the revenue received, we reserve the right to recall the shares on loan on a best efforts basis.

**II. GENERAL PROXY VOTING GUIDELINES**

To promote consistency in voting proxies on behalf of our clients, we follow this Policy (subject to any exception set forth herein). As noted above, certain ETFs will follow Calvert's Global Proxy Voting Guidelines set forth in Appendix A of Calvert's Proxy Voting Policies and Procedures and the proxy voting guidelines discussed in this section do not apply to such ETFs. See Appendix A of Calvert's Proxy Voting Policies and Procedures for a general discussion of the proxy voting guidelines to which these ETFs will be subject.

The Policy addresses a broad range of issues, and provides general voting parameters on proposals that arise most frequently. However, details of specific proposals vary, and those details affect particular voting decisions, as do factors specific to a given company. Pursuant to the procedures set forth herein, we may vote in a manner that is not in accordance with the following general guidelines, provided the vote is approved by the Proxy Review Committee (see Section 3) and is consistent with the Client Proxy Standard. Morgan Stanley AIP GP LP (Morgan Stanley AIP") will follow the procedures as described in Appendix A.

We endeavor to integrate governance and proxy voting policy with investment goals, using the vote to encourage portfolio companies to enhance long-term shareholder value and to provide a high standard of transparency such that equity markets can value corporate assets appropriately.

We seek to follow the Client Proxy Standard for each client. At times, this may result in split votes, for example when different clients have varying economic interests and / or priorities reflected in their mandates with respect to the outcome of a particular voting matter (such as a case in which varied ownership interests in two companies involved in a merger result in different stakes in the outcome). We also may split votes at times based on differing views of portfolio managers.

We may abstain from or vote against matters for which disclosure is inadequate.

**A. Routine Matters** **.**

We generally support routine management proposals. The following are examples of routine management proposals:

■ Approval of financial statements and auditor reports if delivered with an unqualified auditor's opinion.

■ General updating/corrective amendments to the charter, articles of association or bylaws, unless we believe that such amendments would diminish shareholder rights.

■ Most proposals related to the conduct of the annual meeting, with the following exceptions. We generally oppose proposals that relate to "the transaction of such other business which may come before the meeting," and open-ended requests for adjournment. However, where management specifically states the reason for requesting an adjournment and the requested adjournment would facilitate passage of a proposal that would otherwise be supported under this Policy (i.e., an uncontested corporate transaction), the adjournment request will be supported. We do not support proposals that allow companies to call a special meeting with a short (generally two weeks or less) time frame for review.

We generally support shareholder proposals advocating confidential voting procedures and independent tabulation of voting results.

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**B. Board of Directors** **.**

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| **1** | Election of Directors: Votes on board nominees can involve balancing a variety of considerations. In vote decisions, we may take into consideration whether the company has a majority voting policy in place that we believe makes the director vote more meaningful. In the absence of a proxy contest, we generally support the board's nominees for director except as follows: |

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| a | We consider withholding support from or voting against a nominee if we believe a direct conflict exists between the interests of the nominee and the public shareholders, including failure to meet fiduciary standards of care and/or loyalty. We may oppose directors where we conclude that actions of directors are unlawful, unethical or negligent. We consider opposing individual board members or an entire slate if we believe the board is entrenched and/or dealing inadequately with performance problems; if we believe the board is acting with insufficient independence between the board and management; or if we believe the board has not been sufficiently forthcoming with information on key governance or other material matters. |

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| b | We consider withholding support from or voting against interested directors if the company's board does not meet market standards for director independence, or if otherwise we believe board independence is insufficient. We refer to prevalent market standards as promulgated by a stock exchange or other authority within a given market (e.g., New York Stock Exchange or Nasdaq rules for most U.S. companies, and The Combined Code on Corporate Governance in the United Kingdom). Thus, for an NYSE company with no controlling shareholder, we would expect that at a minimum a majority of directors should be independent as defined by NYSE. Where we view market standards as inadequate, we may withhold votes based on stronger independence standards. Market standards notwithstanding, we generally do not view long board tenure alone as a basis to classify a director as non-independent. |

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i At a company with a shareholder or group that controls the company by virtue of a majority economic interest in the company, we have a reduced expectation for board independence, although we believe the presence of independent directors can be helpful, particularly in staffing the audit committee, and at times we may withhold support from or vote against a nominee on the view the board or its committees are not sufficiently independent. In markets where board independence is not the norm (e.g. Japan), however, we consider factors including whether a board of a controlled company includes independent members who can be expected to look out for interests of minority holders.

ii We consider withholding support from or voting against a nominee if he or she is affiliated with a major shareholder that has representation on a board disproportionate to its economic interest.

c Depending on market standards, we consider withholding support from or voting against a nominee who is interested and who is standing for election as a member of the company's compensation/remuneration, nominating/governance or audit committee.

d We consider withholding support from or voting against nominees if the term for which they are nominated is excessive. We consider this issue on a market-specific basis.

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| e | We consider withholding support from or voting against nominees if in our view there has been insufficient board renewal (turnover), particularly in the context of extended poor company performance. Also, if the board has failed to consider diversity, including but not limited to, gender and ethnicity, in its board composition. |

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| f | We consider withholding support from or voting against a nominee standing for election if the board has not taken action to implement generally accepted governance practices for which there is a "bright line" test. For example, in the context of the U.S. market, failure to eliminate a dead hand or slow hand poison pill would be seen as a basis for opposing one or more incumbent nominees. |

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| g | In markets that encourage designated audit committee financial experts, we consider voting against members of an audit committee if no members are designated as such. We also consider voting against the audit committee members if the company has faced financial reporting issues and/or does not put the auditor up for ratification by shareholders. |

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| h | We believe investors should have the ability to vote on individual nominees, and may abstain or vote against a slate of nominees where we are not given the opportunity to vote on individual nominees. |

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i We consider withholding support from or voting against a nominee who has failed to attend at least 75% of the nominee's board and board committee meetings within a given year without a reasonable excuse. We also consider opposing nominees if the company does not meet market standards for disclosure on attendance.

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| j | We consider withholding support from or voting against a nominee who appears overcommitted, particularly through service on an excessive number of boards. Market expectations are incorporated into this analysis; for U.S. boards, we generally oppose election of a nominee who serves on more than five public company boards (excluding investment companies), or public company CEOs that serve on more than two outside boards given level of time commitment required in their primary job. |

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k We consider withholding support from or voting against a nominee where we believe executive remuneration practices are poor, particularly if the company does not offer shareholders a separate "say-on-pay" advisory vote on pay.

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| **2** | Discharge of Directors' Duties: In markets where an annual discharge of directors' responsibility is a routine agenda item, we generally support such discharge. However, we may vote against discharge or abstain from voting where there are serious findings of fraud or other unethical behavior for which the individual bears responsibility. The annual discharge of responsibility represents shareholder approval of disclosed actions taken by the board during the year and may make future shareholder action against the board difficult to pursue. |

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| **3** | Board Independence: We generally support U.S. shareholder proposals requiring that a certain percentage (up to 66⅔%) of the company's board members be independent directors, and promoting all-independent audit, compensation and nominating/governance committees. |

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| **4** | Board Diversity: We generally support shareholder proposals urging diversity of board membership with respect to gender, race or other factors where we believe the board has failed to take these factors into account. We will also consider not supporting the re-election of the nomination committee and/or chair (or other resolutions when the nomination chair is not up for re- election) where we perceive limited progress in gender diversity, with the expectation where feasible and with consideration of any idiosyncrasies of individual markets, that female directors represent not less than a third of the board, unless there is evidence that the company has made significant progress in this area. In markets where information on director ethnicity is available, and it is legal to obtain it, and where it is relevant, we will generally also consider not supporting the re-election of the nomination committee chair (or other resolutions when the nomination chair is not up for re-election) if the board lacks ethnic diversity and has not outlined a credible diversity strategy. |

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| **5** | Majority Voting: We generally support proposals requesting or requiring majority voting policies in election of directors, so long as there is a carve-out for plurality voting in the case of contested elections. |

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| **6** | Proxy Access: We consider proposals on procedures for inclusion of shareholder nominees and to have those nominees included in the company's proxy statement and on the company's proxy ballot on a case-by-case basis. Considerations include ownership thresholds, holding periods, the number of directors that shareholders may nominate and any restrictions on forming a group |

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| **7** | Reimbursement for Dissident Nominees: We generally support well-crafted U.S. shareholder proposals that would provide for reimbursement of dissident nominees elected to a board, as the cost to shareholders in electing such nominees can be factored into the voting decision on those nominees. |

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| **8** | Proposals to Elect Directors More Frequently: In the U.S. public company context, we usually support shareholder and management proposals to elect all directors annually (to "declassify" the board), although we make an exception to this policy where we believe that long-term shareholder value may be harmed by this change given particular circumstances at the company at the time of the vote on such proposal. As indicated above, outside the United States, we generally support greater accountability to shareholders that comes through more frequent director elections, but recognize that many markets embrace longer term lengths, sometimes for valid reasons given other aspects of the legal context in electing boards. |

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| **9** | Cumulative Voting: We generally support proposals to eliminate cumulative voting in the U.S. market context. (Cumulative voting provides that shareholders may concentrate their votes for one or a handful of candidates, a system that can enable a minority bloc to place representation on a board.) U.S. proposals to establish cumulative voting in the election of directors generally will not be supported. |

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| **10** | Separation of Chairman and CEO Positions: We vote on shareholder proposals to separate the Chairman and CEO positions and/or to appoint an independent Chairman based in part on prevailing practice in particular markets, since the context for such a practice varies. In many non-U.S. markets, we view separation of the roles as a market standard practice, and support division of the roles in that context. In the United States, we consider such proposals on a case-by-case basis, considering, among other things, the existing board leadership structure, company performance, and any evidence of entrenchment or perceived risk that power is overly concentrated in a single individual. |

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| **11** | Director Retirement Age and Term Limits: Proposals setting or recommending director retirement ages or director term limits are voted on a case-by-case basis that includes consideration of company performance, the rate of board renewal, evidence of effective individual director evaluation processes, and any indications of entrenchment. |

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| **12** | Proposals to Limit Directors' Liability and/or Broaden Indemnification of Officers and Directors: Generally, we will support such proposals provided that an individual is eligible only if he or she has not acted in bad faith, with gross negligence or with reckless disregard of their duties. |

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**C. Statutory Auditor Boards**

The statutory auditor board, which is separate from the main board of directors, plays a role in corporate governance in several markets. These boards are elected by shareholders to provide assurance on compliance with legal and accounting standards and the company's articles of association. We generally vote for statutory auditor nominees if they meet independence standards. In markets that require disclosure on attendance by internal statutory auditors, however, we consider voting against nominees for these positions who failed to attend at least 75% of meetings in the previous year. We also consider opposing nominees if the company does not meet market standards for disclosure on attendance.

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**D. Corporate Transactions and Proxy Fights.**

We examine proposals relating to mergers, acquisitions and other special corporate transactions (i.e., takeovers, spin-offs, sales of assets, reorganizations, restructurings and recapitalizations) on a case-by-case basis in the interests of each fund or other account. Proposals for mergers or other significant transactions that are friendly and approved by the Research Providers usually are supported if there is no portfolio manager objection. We also analyze proxy contests on a case-by-case basis.

**E. Changes in Capital Structure.**

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| **1** | We generally support the following: |

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■ Management and shareholder proposals aimed at eliminating unequal voting rights, assuming fair economic treatment of classes of shares we hold.

■ U.S. management proposals to increase the authorization of existing classes of common stock (or securities convertible into common stock) if: (i) a clear business purpose is stated that we can support and the number of shares requested is reasonable in relation to the purpose for which authorization is requested; and/or (ii) the authorization does not exceed 100% of shares currently authorized and at least 30% of the total new authorization will be outstanding. (We consider proposals that do not meet these criteria on a case-by-case basis.)

■ U.S. management proposals to create a new class of preferred stock or for issuances of preferred stock up to 50% of issued capital, unless we have concerns about use of the authority for anti-takeover purposes.

■ Proposals in non-U.S. markets that in our view appropriately limit potential dilution of existing shareholders. A major consideration is whether existing shareholders would have preemptive rights for any issuance under a proposal for standing share issuance authority. We generally consider market-specific guidance in making these decisions; for example, in the U.K. market we usually follow Association of British Insurers' ("ABI") guidance, although company-specific factors may be considered and for example, may sometimes lead us to voting against share authorization proposals even if they meet ABI guidance.

■ Management proposals to authorize share repurchase plans, except in some cases in which we believe there are insufficient protections against use of an authorization for anti-takeover purposes.

■ Management proposals to reduce the number of authorized shares of common or preferred stock, or to eliminate classes of preferred stock.

■ Management proposals to effect stock splits.

■ Management proposals to effect reverse stock splits if management proportionately reduces the authorized share amount set forth in the corporate charter. Reverse stock splits that do not adjust proportionately to the authorized share amount generally will be approved if the resulting increase in authorized shares coincides with the proxy guidelines set forth above for common stock increases.

■ Management dividend payout proposals, except where we perceive company payouts to shareholders as inadequate.

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| **2** | We generally oppose the following (notwithstanding management support): |

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■ Proposals to add classes of stock that would substantially dilute the voting interests of existing shareholders.

■ Proposals to increase the authorized or issued number of shares of existing classes of stock that are unreasonably dilutive, particularly if there are no preemptive rights for existing shareholders. However, depending on market practices, we consider voting for proposals giving general authorization for issuance of shares not subject to preemptive rights if the authority is limited.

■ Proposals that authorize share issuance at a discount to market rates, except where authority for such issuance is de minimis, or if there is a special situation that we believe justifies such authorization (as may be the case, for example, at a company under severe stress and risk of bankruptcy).

■ Proposals relating to changes in capitalization by 100% or more.

We consider on a case-by-case basis shareholder proposals to increase dividend payout ratios, in light of market practice and perceived market weaknesses, as well as individual company payout history and current circumstances. For example, currently we perceive low payouts to shareholders as a concern at some Japanese companies, but may deem a low payout ratio as appropriate for a growth company making good use of its cash, notwithstanding the broader market concern.

**F. Takeover Defenses and Shareholder Rights**

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| **1** | Shareholder Rights Plans: We generally support proposals to require shareholder approval or ratification of shareholder rights plans (poison pills). In voting on rights plans or similar takeover defenses, we consider on a case-by-case basis whether the company has demonstrated a need for the defense in the context of promoting long-term share value; whether provisions of the defense are in line with generally accepted governance principles in the market (and specifically the presence of an adequate |

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qualified offer provision that would exempt offers meeting certain conditions from the pill); and the specific context if the proposal is made in the midst of a takeover bid or contest for control.

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| **2** | Supermajority Voting Requirements: We generally oppose requirements for supermajority votes to amend the charter or bylaws, unless the provisions protect minority shareholders where there is a large shareholder. In line with this view, in the absence of a large shareholder we support reasonable shareholder proposals to limit such supermajority voting requirements. Also, we oppose provisions that do not allow shareholders any right to amend the charter of bylaws. |

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| **3** | Shareholders Right to Call a Special Meeting: We consider proposals to enhance a shareholder's rights to call meetings on a case-by-case basis. At large-cap U.S. companies, we generally support efforts to establish the right of holders of 10% or more of shares to call special meetings, unless the board or state law has set a policy or law establishing such rights at a threshold that we believe to be acceptable. |

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| **4** | Written Consent Rights: In the U.S. context, we examine proposals for shareholder written consent rights on a case-by-case basis. |

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| **5** | Reincorporation: We consider management and shareholder proposals to reincorporate to a different jurisdiction on a case-by-case basis. We oppose such proposals if we believe the main purpose is to take advantage of laws or judicial precedents that reduce shareholder rights. |

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| **6** | Anti-greenmail Provisions: Proposals relating to the adoption of anti-greenmail provisions will be supported, provided that the proposal: (i) defines greenmail; (ii) prohibits buyback offers to large block holders (holders of at least 1% of the outstanding shares and in certain cases, a greater amount) not made to all shareholders or not approved by disinterested shareholders; and (iii) contains no anti-takeover measures or other provisions restricting the rights of shareholders. |

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| **7** | Bundled Proposals: We may consider opposing or abstaining on proposals if disparate issues are "bundled" and presented for a single vote. |

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**G. Auditors**

We generally support management proposals for selection or ratification of independent auditors. However, we may consider opposing such proposals with reference to incumbent audit firms if the company has suffered from serious accounting irregularities and we believe rotation of the audit firm is appropriate, or if fees paid to the auditor for non-audit-related services are excessive. Generally, to determine if non-audit fees are excessive, a 50% test will be applied (i.e., non-audit-related fees should be less than 50% of the total fees paid to the auditor). We generally vote against proposals to indemnify auditors.

**H. Executive and Director Remuneration**

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| **1** | We generally support the following: |

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■ Proposals for employee equity compensation plans and other employee ownership plans, provided that our research does not indicate that approval of the plan would be against shareholder interest. Such approval may be against shareholder interest if it authorizes excessive dilution and shareholder cost, particularly in the context of high usage ("run rate") of equity compensation in the recent past; or if there are objectionable plan design and provisions.

■ Proposals relating to fees to outside directors, provided the amounts are not excessive relative to other companies in the country or industry, and provided that the structure is appropriate within the market context. While stock-based compensation to outside directors is positive if moderate and appropriately structured, we are wary of significant stock option awards or other performance-based awards for outside directors, as well as provisions that could result in significant forfeiture of value on a director's decision to resign from a board (such forfeiture can undercut director independence).

■ Proposals for employee stock purchase plans that permit discounts, but only for grants that are part of a broad-based employee plan, including all non-executive employees, and only if the discounts are limited to a reasonable market standard or less.

■ Proposals for the establishment of employee retirement and severance plans, provided that our research does not indicate that approval of the plan would be against shareholder interest.

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| **2** | We generally oppose retirement plans and bonuses for non-executive directors and independent statutory auditors. |

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| **3** | In the U.S. context, we generally vote against shareholder proposals requiring shareholder approval of all severance agreements, but we generally support proposals that require shareholder approval for agreements in excess of three times the annual compensation (salary and bonus) or proposals that require companies to adopt a provision requiring an executive to receive accelerated vesting of equity awards if there is a change of control and the executive is terminated. We generally oppose shareholder proposals that would establish arbitrary caps on pay. We consider on a case-by-case basis shareholder proposals that seek to limit Supplemental Executive Retirement Plans (SERPs), but support such shareholder proposals where we consider SERPs excessive. |

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| **4** | Shareholder proposals advocating stronger and/or particular pay-for-performance models will be evaluated on a case-by-case basis, with consideration of the merits of the individual proposal within the context of the particular company and its labor |

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markets, and the company's current and past practices. While we generally support emphasis on long-term components of senior executive pay and strong linkage of pay to performance, we consider factors including whether a proposal may be overly prescriptive, and the impact of the proposal, if implemented as written, on recruitment and retention.

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| **5** | We generally support proposals advocating reasonable senior executive and director stock ownership guidelines and holding requirements for shares gained in executive equity compensation programs. |

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| **6** | We generally support shareholder proposals for reasonable "claw-back" provisions that provide for company recovery of senior executive bonuses to the extent they were based on achieving financial benchmarks that were not actually met in light of subsequent restatements. |

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| **7** | Management proposals effectively to re-price stock options are considered on a case-by-case basis. Considerations include the company's reasons and justifications for a re-pricing, the company's competitive position, whether senior executives and outside directors are excluded, potential cost to shareholders, whether the re-pricing or share exchange is on a value-for-value basis, and whether vesting requirements are extended. |

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| **8** | Say-on-Pay: We consider proposals relating to an advisory vote on remuneration on a case-by-case basis. Considerations include a review of the relationship between executive remuneration and performance based on operating trends and total shareholder return over multiple performance periods. In addition, we review remuneration structures and potential poor pay practices, including relative magnitude of pay, discretionary bonus awards, tax gross ups, change-in-control features, internal pay equity and peer group construction. As long-term investors, we support remuneration policies that align with long-term shareholder returns. |

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**I. Social and Environmental Issues.** Shareholders in the United States and certain other markets submit proposals encouraging changes in company disclosure and practices related to particular social and environmental matters. MSIM believes that relevant social and environmental issues, including principal adverse sustainability impacts, can influence risk and return. Consequently, we consider how to vote on proposals related to social and environmental issues on a case-by-case basis by determining the relevance of social and environmental issues identified in the proposal and their likely impacts on shareholder value. In reviewing proposals on social and environmental issues, we consider a company's current disclosures and our understanding of the company's management of material social and environmental issues in comparison to peers. We seek to balance concerns on reputational and other risks that lie behind a proposal against costs of implementation, while considering appropriate shareholder and management prerogatives. We may abstain from voting on proposals that do not have a readily determinable financial impact on shareholder value and we may oppose proposals that intrude excessively on management prerogatives and/or board discretion. We generally vote against proposals requesting reports or actions that we believe are duplicative, related to matters not material to the business, or that would impose unnecessary or excessive costs. We consider proposals on these sustainability risks, opportunities and impacts on a case-by-case basis but generally support proposals that seek to enhance useful disclosure. We focus on understanding the company's business and commercial context and recognise that there is no one size fits all that can apply to all companies. In assessing and prioritising proposals, we carefully reflect on the materiality of the issues as well as the sector and geography in which the company operates. We also consider the explanation companies provide where they may depart from best practice to assess the adequacy and appropriateness of measures that are in place.

<u>Environmental Issues</u>

We generally support proposals that, if implemented, would enhance useful disclosure on climate, biodiversity, and other environmental risks such as disclosures aligned with SASB (Sustainability Accounting Standards Board) and the TCFD (Task Force on Climate-related Financial Disclosures). We also generally support proposals that aim to meaningfully reduce or mitigate a company's impact on the global climate. We generally will support reasonable proposals to reduce negative environmental impacts and ameliorate a company's overall environmental footprint, including any threats to biodiversity in ecologically sensitive areas. We generally will also support proposals asking companies to report on their environmental practices, policies and impacts, including environmental damage and health risks resulting from operations, and the impact of environmental liabilities on shareholder value.

<u>Social Issues</u>

We generally support proposals that, if implemented, would enhance useful disclosure on employee and board diversity, including gender, race, and other factors. We consider proposals on other social issues on a case-by-case basis but generally support proposals that:

■ Seek to enhance useful disclosure or improvements on material issues such as human rights risks, supply chain management. workplace safety, human capital management and pay equity.

■ Encourage policies to eliminate gender-based violence and other forms of harassment from the workplace.

We may consider withholding support where we have material concerns in relation to a company's involvement/remediation of a breach of global conventions such as UN Global Compact Principles on Human Rights, Labour Standards, Environment and Business Malpractice

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**J. Funds of Funds.** Certain MS Funds advised by an MSIM Affiliate invest only in other MS Funds. If an underlying fund has a shareholder meeting, in order to avoid any potential conflict of interest, such proposals will be voted in the same proportion as the votes of the other shareholders of the underlying fund, unless otherwise determined by the Proxy Review Committee. In markets where proportional voting is not available we will not vote at the meeting, unless otherwise determined by the Proxy Review Committee. Other MS Funds invest in unaffiliated funds. If an unaffiliated underlying fund has a shareholder meeting and the MS Fund owns more than 25% of the voting shares of the underlying fund, the MS Fund will vote its shares in the unaffiliated underlying fund in the same proportion as the votes of the other shareholders of the underlying fund to the extent possible.

Voting Conditions Triggered Under Rule 12d1-4

Rule 12d1-4 sets forth the conditions under which a registered fund ("acquiring fund") may invest in excess of the statutory limits of Section 12(d)(1) of the 1940 Act (for example by owning more than 3% of the total outstanding voting stock) in another registered fund ("acquired fund"). In the event that a Morgan Stanley "acquiring fund" invests in an "acquired fund" in reliance on Rule 12d1-4 under the 1940 Act, and the MS Fund and its "advisory group" (as defined in Rule 12d1-4) hold more than (i) 25% of the total outstanding voting stock of a particular open-end fund (including ETFs) or (ii) 10% of the total outstanding voting stock of a particular closed-end fund, the Morgan Stanley "acquiring fund" and its "advisory group" will be required to vote all shares of the open- or closed-end fund held by the fund and its "advisory group" in the same proportion as the votes of the other shareholders of the open- or closed-end fund.

Because MSIM and Eaton Vance are generally considered part of the same "advisory group," an Eaton Vance "acquiring fund" that is required to comply with the voting conditions set forth in Rule 12d1-4 could potentially implicate voting conditions for a MS Fund invested in the same open- or closed-end fund as the Eaton Vance "acquiring fund." The Committee will be notified by Compliance if the conditions are triggered for a particular open- or closed-end fund holding in an MS Fund. In the event that the voting conditions in Rule 12d1-4 are triggered, please refer to the Morgan Stanley Funds Fund of Funds Investment Policy for specific information on Rule 12d1-4 voting requirements and exceptions.

**III. ADMINISTRATION OF THE POLICY**

The MSIM Proxy Review Committee (the "Committee") has overall responsibility for the Policy. The Committee consists of investment professionals who represent the different investment disciplines and geographic locations of MSIM, and is chaired by the director of the Global Stewardship Team ("GST"). Because proxy voting is an investment responsibility and may affect shareholder value, and because of their knowledge of companies and markets as well as their understanding of their clients' objectives, portfolio managers and other members of investment staff play a key role in proxy voting, and the GST will consult with investment teams ahead of decisions on proxy votes. Consequently, there may be instances where we may split votes at times based on differing views of portfolio managers and / or different client objectives. The GST administers and implements the Policy, as well as monitoring services provided by the proxy advisory firms, third-party proxy engagements and other research providers used in the proxy voting process. As noted above, certain ETFs will follow Calvert's Proxy Voting Policy and Procedures, which is administered by Calvert's Proxy Voting and Engagement Department and overseen by Calvert's Proxy Voting and Engagement Committee. The GST periodically monitors Calvert's proxy voting with respect to securities held by the ETFs.

The GST Director is responsible for identifying issues that require Committee deliberation or ratification. The GST, working with advice of investment teams and the Committee, is responsible for voting on routine items and on matters that can be addressed in line with these Policy guidelines. The GST has responsibility for voting case-by-case where guidelines and precedent provide adequate guidance.

The Committee may periodically review and has the authority to amend, as necessary, the Policy and establish and direct voting positions consistent with the Client Proxy Standard.

GST and members of the Committee may take into account Research Providers' recommendations and research as well as any other relevant information they may request or receive, including portfolio manager and/or analyst comments and research, as applicable. Generally, proxies related to securities held in client accounts that are managed pursuant to quantitative, index or index-like strategies ("Index Strategies") will be voted in the same manner as those held in actively managed accounts, unless economic interests or investment guidelines of the accounts differ. Because accounts managed using Index Strategies are passively managed accounts, research from portfolio managers and/or analysts related to securities held in these accounts may not be available. If the affected securities are held only in accounts that are managed pursuant to Index Strategies, and the proxy relates to a matter that is not described in this Policy, the GST will consider all available information from the Research Providers, and to the extent that the holdings are significant, from the portfolio managers and/or analysts.

**A. Committee Procedures**

The Committee meets at least quarterly, and reviews and considers changes to the Policy at least annually. Through meetings and/or written communications, the Committee is responsible for monitoring and ratifying material "split votes" (i.e., allowing certain shares of the same issuer that are the subject of the same proxy solicitation and held by one or more MSIM portfolios to be voted

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differently than other shares) and/or "override voting" (i.e., voting all MSIM portfolio shares in a manner contrary to the Policy). The Committee will review developing issues and approve upcoming votes, as appropriate, for matters as requested by GST.

The Committee reserves the right to review voting decisions at any time and to make voting decisions as necessary to ensure the independence and integrity of the votes.

**B. Material Conflicts of Interest**

In addition to the procedures discussed above, if the GST Director determines that an issue raises a material conflict of interest, the GST Director may request a special committee ("Special Committee") to review, and recommend a course of action with respect to, the conflict(s) in question.

A potential material conflict of interest could exist in the following situations, among others:

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| **1** | The issuer soliciting the vote is a client of MSIM or an affiliate of MSIM and the vote is on a matter that materially affects the issuer. |

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| **2** | The proxy relates to Morgan Stanley common stock or any other security issued by Morgan Stanley or its affiliates except if echo voting is used, as with MS Funds, as described herein. |

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| **3** | Morgan Stanley has a material pecuniary interest in the matter submitted for a vote (e.g., acting as a financial advisor to a party to a merger or acquisition for which Morgan Stanley will be paid a success fee if completed). |

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| **4** | One of Morgan Stanley's independent directors or one of MS Funds' directors also serves on the board of directors or is a nominee for election to the board of directors of a company held by an MS Fund or affiliate. |

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If the GST Director determines that an issue raises a potential material conflict of interest, depending on the facts and circumstances, the issue will be addressed as follows:

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| **1** | If the matter relates to a topic that is discussed in this Policy, the proposal will be voted as per the Policy. |

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| **2** | If the matter is not discussed in this Policy or the Policy indicates that the issue is to be decided case-by-case, the proposal will be voted in a manner consistent with the Research Providers, provided that all the Research Providers consulted have the same recommendation, no portfolio manager objects to that vote, and the vote is consistent with MSIM's Client Proxy Standard. |

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| **3** | If the Research Providers' recommendations differ, the GST Director will refer the matter to a Special Committee to vote on the proposal, as appropriate. |

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Any Special Committee shall be comprised of the GST Director, and at least two portfolio managers (preferably members of the Committee), as approved by the Committee. The GST Director may request non-voting participation by MSIM's General Counsel or his/her designee and the Chief Compliance Officer or his/her designee. In addition to the research provided by Research Providers, the Special Committee may request analysis from MSIM Affiliate investment professionals and outside sources to the extent it deems appropriate.

**C. Proxy Voting Reporting**

The CGT will document in writing all Committee and Special Committee decisions and actions, which documentation will be maintained by the GST for a period of at least six years. To the extent these decisions relate to a security held by an MS Fund, the GST will report the decisions to each applicable Board of Trustees/Directors of those MS Funds (the "Board") at each Board's next regularly scheduled Board meeting. The report will contain information concerning decisions made during the most recently ended calendar quarter immediately preceding the Board meeting.

In addition, to the extent that Committee and Special Committee decisions and actions relate to a security held by other pooled investment vehicles, the GST will report the decisions to the relevant governing board of the pooled investment vehicle.

MSIM will promptly provide a copy of this Policy to any client requesting it. MSIM will also, upon client request, promptly provide a report indicating how each proxy was voted with respect to securities held in that client's account.

MSIM's Legal Department, in conjunction with GST and GST IT for MS Fund reporting and with the AIP investment team for AIP Closed-End 40 Act Fund reporting, is responsible for filing an annual Form N-PX on behalf of each MS Fund and AIP Closed-End 40 Act Fund for which such filing is required, indicating how all proxies were voted with respect to each such fund's holdings.

Also, MSIM maintains voting records of individual agenda items a company meetings in a searchable database on its website on a rolling 12-month basis.

In addition, ISS provides vote execution, reporting and recordkeeping services to MSIM.

**IV. RECORDKEEPING**

Records are retained in accordance with Morgan Stanley's Global Information Management Policy, which establishes general Firm-wide standards and procedures regarding the retention, handling, and destruction of official books and records and other information

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of legal or operational significance. The Global Information Management Policy incorporates Morgan Stanley's Master Retention Schedule, which lists various record classes and associated retention periods on a global basis.

Approved by the Board September 2015, September 27-28, 2016, September 27-28, 2017, October 3-4, 2018, September 24-25, 2019, September 30-October 1, 2020, March 1-2, 2022; December 7-8, 2022.

**APPENDIX A**

Appendix A applies to the following accounts managed by Morgan Stanley AIP GP LP (i) closed-end funds registered under the Investment Company Act of 1940, as amended; (ii) discretionary separate accounts; (iii) unregistered funds; and (iv) non-discretionary accounts offered in connection with AIP's Custom Advisory Portfolio Solutions service.

Generally, AIP will follow the guidelines set forth in Section II of MSIM's Proxy Voting Policy and Procedures. To the extent that such guidelines do not provide specific direction, or AIP determines that consistent with the Client Proxy Standard, the guidelines should not be followed, the Proxy Review Committee has delegated the voting authority to vote securities held by accounts managed by AIP to the Fund of Hedge Funds investment team, the Private Markets investment team or the Portfolio Solutions team of AIP. A summary of decisions made by the applicable investment teams will be made available to the Proxy Review Committee for its information at the next scheduled meeting of the Proxy Review Committee.

In certain cases, AIP may determine to abstain from determining (or recommending) how a proxy should be voted (and therefore abstain from voting such proxy or recommending how such proxy should be voted), such as where the expected cost of giving due consideration to the proxy does not justify the potential benefits to the affected account(s) that might result from adopting or rejecting (as the case may be) the measure in question.

*Waiver of Voting Rights*

For regulatory reasons, AIP may either 1) invest in a class of securities of an underlying fund (the "Fund") that does not provide for voting rights; or 2) waive 100% of its voting rights with respect to the following:

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| **1** | Any rights with respect to the removal or replacement of a director, general partner, managing member or other person acting in a similar capacity for or on behalf of the Fund (each individually a "Designated Person," and collectively, the "Designated Persons"), which may include, but are not limited to, voting on the election or removal of a Designated Person in the event of such Designated Person's death, disability, insolvency, bankruptcy, incapacity, or other event requiring a vote of interest holders of the Fund to remove or replace a Designated Person; and |

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| **2** | Any rights in connection with a determination to renew, dissolve, liquidate, or otherwise terminate or continue the Fund, which may include, but are not limited to, voting on the renewal, dissolution, liquidation, termination or continuance of the Fund upon the occurrence of an event described in the Fund's organizational documents; <u>provided, however</u>, that, if the Fund's organizational documents require the consent of the Fund's general partner or manager, as the case may be, for any such termination or continuation of the Fund to be effective, then AIP may exercise its voting rights with respect to such matter. |

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**APPENDIX B — DESCRIPTION OF RATINGS**

**Standard & Poor's Ratings Services**

An S&P Global Ratings issue credit rating is a forward-looking opinion about the creditworthiness of an obligor with respect to a specific financial obligation, a specific class of financial obligations, or a specific financial program (including ratings on medium-term note programs and commercial paper programs). It takes into consideration the creditworthiness of guarantors, insurers, or other forms of credit enhancement on the obligation and takes into account the currency in which the obligation is denominated. The opinion reflects S&P Global Ratings' view of the obligor's capacity and willingness to meet its financial commitments as they come due, and this opinion may assess terms, such as collateral security and subordination, which could affect ultimate payment in the event of default.

Issue credit ratings can be either long-term or short-term. Short-term ratings are generally assigned to those obligations considered short-term in the relevant market. Short-term ratings are also used to indicate the creditworthiness of an obligor with respect to put features on long-term obligations. Medium-term notes are assigned long-term ratings.

*I. S&P's Long-Term Issue Credit Ratings*

**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.

**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 five business days in the absence of a stated grace period or within the earlier of the stated grace period or 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 exchange offer.

**NR:** Indicates that a rating has not been assigned or is no longer assigned.

*Note:* 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.

*II. S&P's Short-Term Issue Credit Ratings*

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**A-1:** A short-term obligation rated 'A-1' is rated in the highest category by S&P Global Ratings. The obligor's capacity to meet its financial commitments on the obligation is strong. Within this category, certain obligations are designated with a plus sign (+). This indicates that the obligor's capacity to meet its financial commitments on these obligations is extremely strong.

**A-2:** A short-term obligation rated 'A-2' is somewhat more susceptible to the adverse effects of changes in circumstances and economic conditions than obligations in higher rating categories. However, the obligor's capacity to meet its financial commitments on the obligation is satisfactory.

**A-3:** A short-term obligation rated 'A-3' exhibits adequate protection parameters. However, adverse economic conditions or changing circumstances are more likely to weaken an obligor's capacity to meet its financial commitments on the obligation.

**B:** A short-term obligation rated 'B' is regarded as vulnerable and has significant speculative characteristics. The obligor currently has the capacity to meet its financial commitments; however, it faces major ongoing uncertainties that could lead to the obligor's inadequate capacity to meet its financial commitments.

**C:** A short-term obligation rated 'C' 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.

**D:** A short-term 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 any stated grace period. However, any stated grace period longer than five business days will be treated as five business days. The 'D' rating also will be used upon the filing of a bankruptcy petition or the taking of a 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 exchange offer.

**NR:** Indicates that a rating has not been assigned or is no longer assigned.

*III. Municipal Short-Term Note Ratings*

**SP-1:** Strong capacity to pay principal and interest. An issue determined to possess a very strong capacity to pay debt service is given a plus (+) designation.

**SP-2:** Satisfactory capacity to pay principal and interest, with some vulnerability to adverse financial and economic changes over the term of the notes.

**SP-3:** Speculative capacity to pay principal and interest.

**D:** 'D' is assigned upon failure to pay the note when due, completion of a distressed exchange offer, or the filing of a bankruptcy petition or the taking of similar action anywhere default on an obligation is a virtual certainty, for example, due to automatic stay provisions*.*

**Moody's Investors, Inc.**

Ratings assigned on Moody's global long-term and short-term rating scales are forward-looking opinions of the relative credit risks of financial obligations issued by non-financial corporates, financial institutions, structured finance vehicles, project finance vehicles, and public sector entities. Long-term ratings are assigned to issuers or obligations with an original maturity of one year or more and reflect both on the likelihood of a default on contractually promised payments and the expected financial loss suffered in the event of default. Short-term ratings are assigned to obligations with an original maturity of thirteen months or less and reflect both on the likelihood of a default on contractually promised payments and the expected financial loss suffered in the event of default.

*I. Moody's Global Long-Term Rating Scale*

**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.

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**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 mid-range ranking; and the modifier 3 indicates a ranking in the lower end of that generic rating category. Additionally, a "(hyb)" indicator is appended to all ratings of hybrid securities issued by banks, insurers, finance companies, and securities firms.

*II. Moody's Global Short-Term Rating Scale*

**P-1:** Issuers (or supporting institutions) rated Prime-1 have a superior ability to repay short-term debt obligations.

**P-2:** Issuers (or supporting institutions) rated Prime-2 have a strong ability to repay short-term debt obligations.

**P-3:** Issuers (or supporting institutions) rated Prime-3 have an acceptable ability to repay short-term obligations.

**NP:** Issuers (or supporting institutions) rated Not Prime do not fall within any of the Prime rating categories.

**Fitch Ratings Inc.**

Fitch Ratings' credit ratings relating to issuers are an opinion on the relative ability of an entity to meet financial commitments, such as interest, preferred dividends, repayment of principal, insurance claims or counterparty obligations. Credit ratings relating to securities and obligations of an issuer can include a recovery expectation. Credit ratings are used by investors as indications of the likelihood of receiving the money owed to them in accordance with the terms on which they invested. The agency's credit ratings cover the global spectrum of corporate, sovereign financial, bank, insurance, and public finance entities (including supranational and sub-national entities) and the securities or other obligations they issue, as well as structured finance securities backed by receivables or other financial assets.

*I. Fitch's Long-Term Issuer Credit Rating Scale*

**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.

**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. 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 the issuer is in standstill, or for a closed funding vehicle, payment capacity is irrevocably impaired. Conditions that are indicative of a 'C' category rating for an issuer include: a. the issuer has entered into a grace or cure period following non-payment of a material financial obligation; b. the issuer has entered into a temporary negotiated waiver or standstill agreement following a payment default on a material financial obligation; c. the formal announcement by the issuer or their agent of a distressed debt exchange; d. 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: a. an uncured payment default or distressed debt exchange on a bond, loan or other material financial obligation, but b. has not entered into bankruptcy filings, administration, receivership, liquidation, or other formal winding-up procedure, and c. has not otherwise ceased operating. This would include: i. the selective payment default on a specific class or currency of debt; ii. the uncured expiry of any applicable grace period, cure period or default forbearance period following a payment default on a bank loan, capital markets security or other

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material financial obligation; iii. the extension of multiple waivers or forbearance periods upon a payment default on one or more material financial obligations, either in series or in parallel; ordinary execution of a distressed debt exchange on one or more material financial obligations.

**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.

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 distressed debt exchange.

Imminent default, categorized under 'C', typically refers to the occasion where a payment default has been intimated by the issuer and is all but inevitable. This may, for example, be where an issuer has missed a scheduled payment but (as is typical) has a grace period during which it may cure the payment default. Another alternative would be where an issuer has formally announced a distressed debt exchange, but the date of the exchange still lies several days or weeks in the immediate future.

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.

*Note:* The modifiers "+" or "-" may be appended to a rating to denote relative status within major rating categories. Such suffixes are not added to 'AAA' ratings and ratings below the 'CCC' category.

*II. Fitch's Short-Term Ratings Assigned to Issuers or Obligations in Corporate, Public and Structure Finance*

**F1:** Highest Short-Term Credit Quality. Indicates the strongest intrinsic capacity for timely payment of financial commitments; may have an added "+" to denote any exceptionally strong credit feature.

**F2:** Good Short-Term Credit Quality. Good intrinsic capacity for timely payment of financial commitments.

**F3:** Fair Short-Term Credit Quality. The intrinsic capacity for timely payment of financial commitments is adequate.

**B:** Speculative Short-Term Credit Quality. Minimal capacity for timely payment of financial commitments, plus heightened vulnerability to near term adverse changes in financial and economic conditions.

**C:** High Short-Term Default Risk. Default is a real possibility.

**RD:** Restricted Default. Indicates an entity that has defaulted on one or more of its financial commitments, although it continues to meet other financial obligations. Typically applicable to entity ratings only.

**D:** Default. Indicates a broad-based default event for an entity, or the default of a short-term obligation.

*Note*: The modifiers "+" or "-" may be appended to a rating to denote relative status within major rating categories. For the short-term rating category of 'F1', a '+' may be appended.

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**MORGAN STANLEY MORTGAGE SECURITIES TRUST**

**PART C**

**OTHER INFORMATION**

**ITEM 28. Exhibits**

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| (a) | (1). | Amended and Restated Declaration of Trust of the Registrant, dated March 25, 1987, is incorporated herein by reference to Exhibit 1(a) of Post-Effective Amendment No. 10 to the Registration Statement on Form N-1A, filed on January 25, 1996. |
|  | (2). | Amendment to the Declaration of Trust, effective August 17, 1992, is incorporated herein by reference to Exhibit 1(c) of Post-Effective Amendment No. 10 to the Registration Statement on Form N-1A, filed on January 25, 1996. |
|  | (3). | Instrument Establishing and Designating Additional Classes of Shares, dated July 28, 1997, is incorporated herein by reference to Exhibit 1 of Post-Effective Amendment No. 12 to the Registration Statement on Form N-1A, filed on July 17, 1997. |
|  | (4). | Amendment to the Amended and Restated Declaration of Trust of the Registrant, dated June 22, 1998, is incorporated herein by reference to Exhibit 1 of Post-Effective Amendment No. 14 to the Registration Statement on Form N-1A, filed on December 28, 1998. |
|  | (5). | [Amendment to the Amended and Restated Declaration of Trust of the Registrant, dated June 18, 2001, is incorporated herein by reference to Exhibit 1(d) of Post-Effective Amendment No. 18 to the Registration Statement on Form N-1A, filed on December 28, 2001.](https://www.sec.gov/Archives/edgar/data/806564/000091205701544774/a2066513zex-99_1d.txt) |
|  | (6). | [Amendment to the Amended and Restated Declaration of Trust, effective June 22, 2005, is incorporated herein by reference to Exhibit (a)(4) of Post-Effective Amendment No. 24 to the Registration Statement on Form N-1A, filed on February 28, 2006.](https://www.sec.gov/Archives/edgar/data/806564/000104746906002619/a2165827zex-99_a4.txt) |
|  | (7). | [Amendment to the Amended and Restated Declaration of Trust (changing Class D to Class I), effective March 31, 2008, is incorporated herein by reference to Exhibit (a)(6) of Post-Effective Amendment No. 27 to the Registration Statement on Form N-1A, filed on February 26, 2009.](https://www.sec.gov/Archives/edgar/data/806564/000110465909012404/a09-3245_1ex99da6.htm) |
|  | (8). | [Amendment to the Amended and Restated Declaration of Trust, dated January 8, 2010, is incorporated herein by reference to Exhibit (a)(7) of Post-Effective Amendment No. 36 to the Registration Statement on Form N-1A, filed on February 28, 2014.](https://www.sec.gov/Archives/edgar/data/806564/000110465914014982/a14-3444_1ex99da7.htm) |
|  | (9). | [Amendment to the Amended and Restated Declaration of Trust (changing the Principal Place of Business of the Fund), dated December 8, 2011, is incorporated herein by reference to Exhibit (a)(7) of Post-Effective Amendment No. 32 to the Registration Statement on Form N-1A, filed on February 27, 2012.](https://www.sec.gov/Archives/edgar/data/806564/000110465912013259/a12-2965_1ex99da7.htm) |
|  | (10). | [Amendment to the Amended and Restated Declaration of Trust (changing Class C to Class L), dated February 25, 2013, is incorporated herein by reference to Exhibit (a)(8) of Post-Effective Amendment No. 34 to the Registration Statement on Form N-1A, filed on February 28, 2013.](https://www.sec.gov/Archives/edgar/data/806564/000110465913016209/a13-2937_1ex99da8.htm) |
|  | (11). | [Instrument Establishing and Designating a Class of Shares of the Trust (with respect to Class C shares), effective April 30, 2015, is incorporated herein by reference to Exhibit (a)(10) of Post-Effective Amendment No. 41 to the Registration Statement on Form N-1A, filed on April 28, 2015.](https://www.sec.gov/Archives/edgar/data/806564/000110465915031081/a15-4242_1ex99da10.htm) |
|  | (12). | [Instrument Establishing and Designating a Class of Shares of the Trust (with respect to Class T shares), effective December 8, 2016, is incorporated herein by reference to Exhibit (a)(12) of Post-Effective Amendment No. 62 to the Registration Statement on Form N-1A, filed on December 14, 2017.](https://www.sec.gov/Archives/edgar/data/806564/000113322817006820/h10048813_ex99a12.htm) |

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|:---|:---|:---|
|  | (13). | [Amendment to the Amended and Restated Declaration of Trust (eliminating Class B shares), dated June 13, 2019, is incorporated herein by reference to Exhibit (a)(13) of Post-Effective Amendment No. 84 to the Registration Statement on Form N-1A, filed on February 28, 2020.](https://www.sec.gov/Archives/edgar/data/806564/000113322820000816/msmst-html2021_ex99a13.htm) |
| (b). | (b). | [Amended and Restated By-Laws of the Registrant, dated December 2, 2021, is incorporated by reference to Exhibit (b) of Post-Effective Amendment No. 87 to the Registration Statement on Form N-1A, as filed on February 28, 2022.](https://www.sec.gov/Archives/edgar/data/806564/000113322822000968/msmst-html4458_ex99b.htm) |
| (c). | (c). | Not applicable. |
| (d). | (d). | [Investment Advisory Agreement between the Registrant and Morgan Stanley Investment Management Inc., dated July 31, 2011, is incorporated herein by reference to Exhibit (d) of Post-Effective Amendment No. 33 to the Registration Statement on Form N-1A of Active Assets Prime Trust, filed on October 27, 2017.](https://www.sec.gov/Archives/edgar/data/1096962/000113322817006271/h10047582_ex99d.htm) |
| (e) | (1). | [Distribution Agreement between the Registrant and Morgan Stanley Distribution, Inc., dated July 31, 2011, is incorporated herein by reference to Exhibit (e)(1) of Post-Effective Amendment No. 43 to the Registration Statement on Form N-1A, filed on February 26, 2016.](https://www.sec.gov/Archives/edgar/data/806564/000110465916100592/a16-2750_1ex99de1.htm) |
|  | (2). | [Form of Dealer Agreement is incorporated herein by reference to Exhibit (e)(3) of Post-Effective Amendment No. 10 to the Registration Statement on Form N-1A of Morgan Stanley Aggressive Equity Fund, filed on November 22, 2006.](https://www.sec.gov/Archives/edgar/data/1048710/000104746906014445/a2174386zex-99_e3.txt) |
| (f). | (f). | Second Amended and Restated Retirement Plan for Non-Interested Trustees or Directors, dated May 8, 1997, is incorporated herein by reference to Exhibit 6 of Post-Effective Amendment No. 16 to the Registration Statement on Form N-1A, filed on January 31, 2000. |
| (g). | (g). | [Custodian Contract between the Registrant and State Street Bank and Trust Company, dated March 7, 2008, is incorporated herein by reference to Exhibit (g) of Post-Effective Amendment No. 191 to the Registration Statement on Form N-1A of Morgan Stanley Institutional Fund Trust, filed on December 19, 2018.](https://www.sec.gov/Archives/edgar/data/741375/000113322818006724/html695_ex99-g.htm) |
| (h) | (1). | [Transfer Agency and Service Agreement with Boston Financial Data Services, Inc., dated April 1, 2013, is incorporated herein by reference to Exhibit (h)(2) of Post-Effective Amendment No. 191 to the Registration Statement on Form N-1A of Morgan Stanley Institutional Fund Trust, filed on December 19, 2018.](https://www.sec.gov/Archives/edgar/data/741375/000113322818006724/html695_ex99-h2.htm) |
|  | (2). | [Amendment to the Transfer Agency and Service Agreement with Boston Financial Data Services, Inc., dated as of June 2, 2014, is incorporated herein by reference to Exhibit (h)(2) of Post-Effective Amendment No. 34 to the Registration Statement on Form N-1A of Morgan Stanley Limited Duration U.S. Government Trust, filed on September 26, 2014.](https://www.sec.gov/Archives/edgar/data/876162/000110465914068543/a14-20455_1ex99dh2.htm) |
|  | (3). | [Administration Agreement with Morgan Stanley Investment Management Inc., dated as of January 1, 2014, is incorporated herein by reference to Exhibit (h)(1) of Post-Effective Amendment No. 33 to the Registration Statement on Form N-1A of Active Assets Prime Trust, filed on October 27, 2017.](https://www.sec.gov/Archives/edgar/data/1096962/000113322817006271/h10047582_ex99h1.htm) |
|  | (4). | [Amendment to the Transfer Agency and Service Agreement with Boston Financial Data Services, Inc., dated May 23, 2017, is incorporated herein by reference to Exhibit (h)(4) of Post-Effective Amendment No. 33 to the Registration Statement on Form N-1A of Active Assets Prime Trust, filed on October 27, 2017.](https://www.sec.gov/Archives/edgar/data/1096962/000113322817006271/h10047582_ex99h4.htm) |
|  | (5). | [Addendum to the Transfer Agency and Service Agreement with Boston Financial Data Services, Inc., dated October 5, 2017, is incorporated herein by reference to Exhibit (h)(5) of Post-Effective Amendment No. 33 to the Registration Statement on Form N-1A of Active Assets Prime Trust, filed on October 27, 2017.](https://www.sec.gov/Archives/edgar/data/1096962/000113322817006271/h10047582_ex99h5.htm) |

---

---

| | | |
|:---|:---|:---|
|  | (6). | [Call Center and Transfer Agency Services Amendment, dated November 28, 2022, to the Administration Agreement with Morgan Stanley Investment Management Inc., dated as of January 1, 2014, is incorporated herein by reference to Exhibit (h)(11) of Post-Effective Amendment No. 218 to the Registration Statement on Form N-1A of Morgan Stanley Institutional Fund Trust, filed on January 27, 2023.](https://www.sec.gov/Archives/edgar/data/741375/000113322823000277/msift-html5938_ex99h11.htm) |
|  | (7). | [Amendment to the Transfer Agency and Service Agreement with DST Asset Manager Solutions, Inc., dated November 28, 2022, is incorporated herein by reference to Exhibit h(12) of Post-Effective Amendment No. 218 to the Registration Statement on Form N-1A of Morgan Stanley Institutional Fund Trust, field on January 27, 2023.](https://www.sec.gov/Archives/edgar/data/741375/000113322823000277/msift-html5938_ex99h12.htm) |
| (i) | (1). | [Opinion of Clifford Chance US LLP, is incorporated herein by reference to Exhibit (i)(1) of Post-Effective Amendment No. 22 to the Registration Statement on Form N-1A, filed on December 30, 2004.](https://www.sec.gov/Archives/edgar/data/806564/000104746904038648/a2149167zex-99_i1.txt) |
|  | (2). | [Opinion of Dechert LLP, Massachusetts Counsel, is incorporated herein by reference to Exhibit (i)(2) of Post-Effective Amendment No. 22 to the Registration Statement on Form N-1A, filed on December 30, 2004.](https://www.sec.gov/Archives/edgar/data/806564/000104746904038648/a2149167zex-99_i2.txt) |
|  | (3). | [Opinion and Consent of Dechert LLP, with respect to Class C shares, is incorporated herein by reference to Exhibit (i)(3) of Post-Effective Amendment No. 41 to the Registration Statement on Form N-1A, filed on April 28, 2015.](https://www.sec.gov/Archives/edgar/data/806564/000110465915031081/a15-4242_1ex99di3.htm) |
|  | (4). | [Consent of Dechert LLP, filed herein.](msmst-html5994_99i4.htm) |
| (j). | (j). | [Consent of Independent Registered Public Accounting Firm, filed herein.](msmst-html5994_99j.htm) |
| (k). | (k). | Not applicable. |
| (l). | (l). | Not applicable. |
| (m). | (m). | [Form of Plan of Distribution Pursuant to Rule 12b-1, dated April 30, 2015, is incorporated herein by reference to Exhibit (m) of Post-Effective Amendment No. 41 to the Registration Statement on Form N-1A of Morgan Stanley Mortgage Securities Trust, filed on April 28, 2015.](https://www.sec.gov/Archives/edgar/data/806564/000110465915031081/a15-4242_1ex99dm.htm) |
| (n). | (n). | [Amended and Restated Multi-Class Plan pursuant to Rule 18f-3, dated as of April 29, 2022, filed herein.](msmst-html5994_ex99n.htm) |
| (o). |  | Not applicable |
| (p) | (1). | [Code of Ethics for Morgan Stanley Investment Management, dated December 15, 2022, is incorporated herein by reference to Exhibit (p)(1) of Pre-Effective Amendment No. 5 to the Registration Statement on Form N-1A of Morgan Stanley ETF Trust, as filed on January 20, 2023.](https://www.sec.gov/ix?doc=/Archives/edgar/data/1676326/000113322823000143/msetf-html5909_ex99p1.htm) |
|  | (2). | [Code of Ethics for Morgan Stanley Funds, dated December 2021, is incorporated herein by reference to Exhibit (p)(2) of Post-Effective Amendment No. 250 to the Registration Statement on Form N-1A of Morgan Stanley Institutional Fund, Inc., filed on December 21, 2021.](https://www.sec.gov/Archives/edgar/data/860720/000113322820000815/mseefi-html2023_ex99p2.htm) |
| (q) | . | [Powers of Attorney of Directors, dated September 28, 2022, are incorporated herein by reference to Exhibit (g) of Pre-Effective Amendment No. 1 to the Registration Statement on Form N-1A of Morgan Stanley ETF Trust, filed on November 17, 2022](https://www.sec.gov/Archives/edgar/data/1676326/000113322822007179/msetft-html5652_ex99q.htm) |

---

**ITEM 29. Persons Controlled by or Under Common Control with the Fund**

None

**ITEM 30. Indemnification**

Pursuant to Section 5.3 of the Registrant's Declaration of Trust and under Section 4.8 of the Registrant's By-Laws, the indemnification of the Registrant's trustees, officers, employees and agents is permitted if it is determined that they acted under the belief that their actions were in or not opposed to the best interest of the Registrant, and, with respect to any criminal proceeding, they had reasonable cause to believe their conduct was not unlawful. In addition, indemnification is permitted only if it is determined that the actions in question did not render them liable by reason of willful misfeasance, bad faith or gross negligence in the performance of their duties or by reason of reckless disregard of their obligations and duties to the Registrant. Trustees, officers, employees and agents will be indemnified for the expense of litigation if it is determined that they are entitled to indemnification against any liability established in such litigation. The Registrant may also advance money for these expenses provided that they give their undertakings to repay the Registrant unless their conduct is later determined to permit indemnification.

Pursuant to Section 5.2 of the Registrant's Declaration of Trust and paragraph 8 of the Registrant's Investment Management Agreement, neither the Adviser nor any trustee, officer, employee or agent of the Registrant shall be liable for any action or failure to act, except in the case of bad faith, willful misfeasance, gross negligence or reckless disregard of duties to the Registrant.

Insofar as indemnification for liabilities arising under the Securities Act of 1933 (the "Act") 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 the 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 connection with the successful defense of any action, suit or proceeding) is asserted against the Registrant by such trustee, officer or controlling person in connection with the shares being registered, 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 the Act, and will be governed by the final adjudication of such issue.

The Registrant hereby undertakes that it will apply the indemnification provision of its by-laws in a manner consistent with Release 11330 of the Securities and Exchange Commission under the Investment Company Act of 1940, so long as the interpretation of Sections 17(h) and 17(i) of such Act remains in effect.

The Registrant, in conjunction with the Adviser, the Registrant's Trustees, and other registered investment management companies managed by the Adviser, maintains insurance on behalf of any person who is or was a Trustee, officer, employee, or agent of the Registrant, or who is or was serving at the request of the Registrant as a trustee, director, officer, employee or agent of another trust or corporation, against any liability asserted against him and incurred by him or arising out of his position. However, in no event will Registrant maintain insurance to indemnify any such person for any act for which the Registrant itself is not permitted to indemnify him.

**ITEM 31. Business and Other Connections of Investment Adviser**

See "Fund Management" in the Prospectus regarding the business of the investment adviser. The following information is given regarding directors and officers of Morgan Stanley Investment Management Inc. Morgan Stanley Investment Management Inc. is a wholly-owned subsidiary of Morgan Stanley.

Set forth below is the name and principal business address of each company for which directors or officers of Morgan Stanley Investment Management Inc. serve as directors, officers or employees:

**Morgan Stanley Investment Management Inc.**

**Morgan Stanley Distribution, Inc.**

**Morgan Stanley Services Company Inc.**

522 Fifth Avenue, New York, NY 10036

Listed below as of December 31, 2022 are the officers and Directors of Morgan Stanley Investment Management Inc.:

---

| | |
|:---|:---|
| **NAME AND POSITION WITH**<br>**MORGAN STANLEY INVESTMENT MANAGEMENT INC.** | **OTHER SUBSTANTIAL BUSINESS,**<br>**PROFESSION OR VOCATION** |
| Dan Simkowitz<br> Managing Director and President | Managing Director of Morgan Stanley. |
| Stefanie V. Chang Yu<br> Managing Director, Secretary and General Counsel | Managing Director and Secretary of other entities affiliated with the Adviser. |
| Tom Torrisi <br> Managing Director and Chief Compliance Officer |  |
| Jeannine Ali<br> Managing Director and Chief Financial Officer |  |
| John Hagarty<br> Managing Director and Director |  |
| Anita Rios<br> Executive Director and Treasurer |  |
| Ken Topping<br> Managing Director and Director |  |
| Anton Kuzmanov<br> Managing Director and Director |  |
| Tatiana Segal<br> Managing Director and Director |  |
| Jared P. Wong<br> Executive Director and Chief Anti-Money Laundering Officer | Executive Director and Anti-Money Laundering Officer of Morgan Stanley Distribution, Inc. and Morgan Stanley Services Company, Inc. |

---

For information as to the business, profession, vocation or employment of a substantial nature of additional officers of the Adviser, reference is made to the Adviser's current Form ADV (File No. 801-15757) filed under the Investment Advisers Act of 1940, incorporated herein by reference.

**ITEM 32. Principal Underwriters**

(a)&nbsp;&nbsp;&nbsp;&nbsp; Morgan Stanley Distribution, Inc., a Delaware corporation, is the principal underwriter of the Registrant. Morgan Stanley Distribution, Inc. is also the principal underwriter of the following investment companies:

(1) Morgan Stanley California Tax-Free Daily Income
 Trust

(2) Morgan Stanley Europe Opportunity Fund Inc.

(3) Morgan Stanley Global Fixed Income Opportunities Fund

(4) Morgan Stanley Insight Fund

(5) Morgan Stanley Institutional Fund, Inc.

(6) Morgan Stanley Institutional Fund Trust

(7) Morgan Stanley Institutional Liquidity Funds

(8) Morgan Stanley Tax-Free Daily Income Trust

(9) Morgan Stanley U.S. Government Money Market Trust

(10) Morgan Stanley U.S. Government Securities Trust

(11) Morgan Stanley Variable Insurance Fund, Inc.

(12) Morgan Stanley Variable Investment Series

(b)&nbsp;&nbsp;&nbsp;&nbsp; The following information is given as of December 31, 2022 regarding directors and officers of Morgan Stanley Distribution, Inc. The principal address of Morgan Stanley Distribution, Inc. is 522 Fifth Avenue, New York, NY 10036.

---

| | | |
|:---|:---|:---|
| **NAME AND PRINCIPAL BUSINESS**<br>**ADDRESS** | **POSITIONS AND OFFICES WITH**<br>**UNDERWRITER** | **POSITIONS AND OFFICES WITH**<br>**REGISTRANT** |
| Matthew J. Witkos | President | None |
| David Smith | Chief Compliance Officer | None |
| Jared P. Wong | Chief Anti-Money Laundering Officer | None |
| Stefanie V. Chang Yu | General Counsel | None |
| Jacques Chappuis | Managing Director | None |
| Jeffrey Corso | Managing Director | None |
| Frank J Famiglietti | Managing Director | None |
| Frederick McMullen | Managing Director | None |
| Samantha Schoen | Managing Director | None |
| Brian Taranto | Managing Director | None |
| Kristin Carcio | Executive Director | None |
| Anita Rios | Treasurer | None |
| Luis Castello | Assistant Treasurer | None |
| John Crowe | Principal Financial Officer and Financial and Operations Principal | None |
| Aaron Guth | Assistant Secretary | None |
| Lawrence L. Fahey | Principal Operations Officer | None |
| Erick Lopez | Deputy Anti-Money Laundering Officer | None |

---

(c)&nbsp;&nbsp;&nbsp;&nbsp; Not applicable.

**ITEM 33. Location of Accounts and Records**

State the name and address of each person maintaining physical possession of each account, book, or other document required to be maintained by section 31(a) [15 U.S.C. 80a-30(a)] and the rules under that section.

State Street Bank and Trust Company

One Lincoln Street

Boston, MA 02111

(records relating to its function as custodian and sub-administrator)

SS&C Global Investor and Distribution Solutions, Inc.

2000 Crown Colony Drive

Quincy, MA 02169-0953

(records relating to its functions as transfer agent and dividend disbursing agent)

Morgan Stanley Investment Management Inc.

522 Fifth Avenue

New York, NY 10036

(records relating to its function as investment adviser and administrator)

Morgan Stanley Investment Management Inc.

1633 Broadway

New York, NY 10019

(records relating to its function as investment adviser and administrator)

**ITEM 34. Management Services**

Registrant is not a party to any such management-related service contract.

**ITEM 35. Undertakings**

None.

**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, thereunto duly authorized, in the City of New York and State of New York on the 28th day of February, 2023.

---

| | |
|:---|:---|
| MORGAN STANLEY MORTGAGE SECURITIES TRUST | MORGAN STANLEY MORTGAGE SECURITIES TRUST |
| By: | /s/ John H. Gernon |
|  | John H. Gernon |
|  | President and Principal Executive Officer |

---

Pursuant to the requirements of the Securities Act of 1933, this Post-Effective Amendment No. 88 has been signed below by the following persons in the capacities and on the dates indicated.

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Signatures** | **Signatures** | **Signatures** | **Title** | **Date** |
| (1) Principal Executive Officer | (1) Principal Executive Officer | (1) Principal Executive Officer | President and Principal Executive Officer |  |
| By: | /s/ John H. Gernon | /s/ John H. Gernon |  | February 28, 2023 |
|  | John H. Gernon | John H. Gernon |  |  |
| (2) Principal Financial Officer | (2) Principal Financial Officer | (2) Principal Financial Officer | Principal Financial Officer |  |
| By: | /s/ Francis J. Smith | /s/ Francis J. Smith |  | February 28, 2023 |
|  | Francis J. Smith | Francis J. Smith |  |  |
| (3) Majority of the Trustees | (3) Majority of the Trustees | (3) Majority of the Trustees |  |  |
| Independent Trustees | Independent Trustees | Independent Trustees |  |  |
|  | Frank L. Bowman | Joseph J. Kearns |  |  |
|  | Kathleen A. Dennis | Michael F. Klein |  |  |
|  | Nancy C. Everett | Patricia Maleski |  |  |
|  | Jakki L. Haussler | W. Allen Reed (Chairman) |  |  |
|  | Dr. Manuel H. Johnson | Eddie A. Grier |  |  |
|  | Frances L. Cashman |  |  |  |
| By: | /s/ Carl Frischling | /s/ Carl Frischling |  | February 28, 2023 |
|  | Carl Frischling | Carl Frischling |  |  |
|  | Attorney-in-Fact for the Independent Trustees | Attorney-in-Fact for the Independent Trustees | Attorney-in-Fact for the Independent Trustees |  |

---

EXHIBIT INDEX

MORGAN STANLEY MORTGAGE SECURITIES TRUST

---

| | |
|:---|:---|
| (i)(4) | [Consent of Dechert LLP.](msmst-html5994_99i4.htm) |
| (j) | [Consent of Independent Registered Public Accounting Firm.](msmst-html5994_99j.htm) |
| (n) | [Amended and Restated Multi-Class Plan pursuant to Rule 18f-3, dated as of April 29, 2022.](msmst-html5994_ex99n.htm) |
| EX-101.INS | XBRL Instance Document |
| EX-101.SCH | XBRL Taxonomy Extension Schema Document |
| EX-101.CAL | XBRL Taxonomy Extension Calculation Linkbase |
| EX-101.DEF | XBRL Taxonomy Extension Definition Linkbase |
| EX-101.LAB | XBRL Taxonomy Extension Labels Linkbase |
| EX-101.PRE | XBRL Taxonomy Extension Presentation Linkbase |

---

## Ex-99.(I)(4)

**Exhibit (i)(4)**

**CONSENT OF DECHERT LLP**

We hereby consent to the reference to our firm under the caption "Fund Counsel" in the Statement of Additional Information comprising a part of Post-Effective Amendment No. 88 to the Form N-1A Registration Statement of Morgan Stanley Mortgage Securities Trust, File No. 33-10363. We do not thereby admit that we are within the category of persons whose consent is required under Section 7 of the Securities Act of 1933 or the rules and regulations of the Securities and Exchange Commission thereunder.

---

| |
|:---|
| /s/ Dechert LLP |
| New York, New York |
| February 28, 2023 |

---

## Ex-99.(J)

**Exhibit (j)**

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the references to our firm under the captions "Financial Highlights" in the Prospectus and "Independent Registered Public Accounting Firm" and "Financial Statements" in the Statement of Additional Information, each dated February 28, 2023, and each included in this Post-Effective Amendment No. 88 on the Registration Statement (Form N-1A, File No. 33-10363) of Mortgage Securities Trust (the "Registration Statement").

We also consent to the incorporation by reference of our reports dated December 27, 2022, with respect to Mortgage Securities Trust (the "Fund") included in the Annual Reports to Shareholders (Form N-CSR) for the year ended October 31, 2022, into this Registration Statement filed with the Securities and Exchange Commission.

![](ex99j.jpg)

Boston, Massachusetts

February 28, 2023

## Ex-99.(N)

**Exhibit (n)**

MORGAN STANLEY FUNDS

AMENDED AND RESTATED MULTIPLE CLASS PLAN

PURSUANT TO RULE 18F-3

INTRODUCTION

This plan (the "Plan") is adopted pursuant to Rule 18f-3 under the Investment Company Act of 1940, as amended (the "1940 Act"), effective as of July 28, 1997, as hereby amended and restated as of April 29, 2022. The Plan relates to shares of the open-end investment companies to which Morgan Stanley Investment Management Inc. acts as investment adviser (the "Adviser"), that are listed on Schedule A, as may be amended from time to time (each, a "Fund" and collectively, the "Funds"). The Funds are distributed pursuant to a system (the "Multiple Class System") in which each class of shares (each, a "Class" and collectively, the "Classes") of a Fund represents a pro rata interest in the same portfolio of investments of the Fund and differs only to the extent outlined below.

I. DISTRIBUTION ARRANGEMENTS

One or more Classes of shares of the Funds are offered for purchase by investors with the sales load structures described below. In addition, pursuant to Rule 12b-1 under the 1940 Act or otherwise, the Funds have each adopted Plans of Distribution and Shareholder Service Plans (the "12b-1 Plan") or such other Plans under which shares of certain Classes are subject to the service and/or distribution fees ("12b-1 Fees") or other fees as described below.

1. Class A Shares

Class A shares are offered with a front-end sales load ("FESL"). The schedule of sales charges applicable to a Fund and the circumstances under which the sales charges are subject to reduction or waiver are set forth in each Fund's current prospectus. As stated in each Fund's current prospectus, Class A shares may be purchased at net asset value (without a FESL): (i) in the case of certain large purchases of such shares; and (ii) by certain limited categories of investors, in each case, under the circumstances and conditions set forth in each Fund's current prospectus. Class A shares purchased at net asset value may be subject to a contingent deferred sales charge ("CDSC") on redemptions made within twelve months after purchase. Further information relating to the CDSC, including the manner in which it is calculated, is set forth in paragraph 9 below. Class A shares are also subject to payments under each Fund's Distribution and/or Shareholder Service Plan to reimburse Morgan Stanley Distribution, Inc. (the "Distributor"), its broker-dealer affiliates and other broker-dealers, financial institutions or intermediaries for distribution and/or shareholder service expenses incurred by them specifically on behalf of the Class, assessed at an annual rate of up to 0.25% of average daily net assets. The entire amount of the 12b-1 fee represents a service fee under the Rules of the Financial Industry Regulatory Authority ("FINRA") (of which the Distributor is a member).

2. Class C Shares

Class C shares are offered without imposition of a FESL, but will in most cases be subject to a CDSC of 1.00% on redemptions made within one year after purchase. Further information relating to the CDSC is set forth in paragraph 9 below. In addition, Class C shares, under each Fund's 12b-1 Plan, are subject to 12b-1 payments to reimburse the Distributor, its broker-dealer affiliates and other broker-dealers for distribution and shareholder service expenses incurred by them specifically on behalf of the Class, assessed at the annual rate of up to 1.00% of the average daily net assets of the Class. A portion of the 12b-1 fee equal to up to 0.25% of the Fund's average daily net assets is characterized as a service fee within the meaning of FINRA guidelines.

3. Class L Shares (formerly, Class C Shares)

Class L shares are offered without imposition of a FESL or a CDSC. In addition, Class L shares, under each Fund's 12b-1 Plan, are subject to 12b-1 payments to reimburse the Distributor, its broker-dealer affiliates and other broker-dealers for distribution and shareholder service expenses incurred by them specifically on behalf of the Class, assessed at the annual rate of up to 0.75% of the average daily net assets of Class L with respect to each Fund other than Morgan Stanley Global Fixed Income Opportunities Fund (formerly, Morgan Stanley Flexible Income Fund), Morgan Stanley Mortgage Securities Trust and Morgan Stanley U.S. Government Securities Trust, for which such 12b-1 payments are assessed at an annual rate of up to 0.50% of the average daily net assets of Class L. A portion of the 12b-1 fee equal to up to 0.25% of the Fund's average daily net assets is characterized as a service fee within the meaning of FINRA guidelines.

4. Class I Shares

Class I shares are offered without imposition of a FESL, CDSC or a 12b-1 fee for purchases of Fund shares by (i) investors meeting an initial minimum investment requirement and (ii) certain other limited categories of investors, as disclosed in each Fund's current prospectus.

5. Class R6 Shares (formerly, Class IS Shares)

Class R6 shares are offered without imposition of a FESL, CDSC or a 12b-1 fee for purchases of Fund shares by (i) investors who meet an initial minimum investment requirement of $5,000,000 or are defined contribution, defined benefit or other employer sponsored employee benefit plan, in each case provided that the plan trades through an intermediary that combines its clients' assets in a single omnibus account, whether or not such plan is qualified under the Internal Revenue Code, in each case subject to the discretion of the Adviser, and (ii) certain other limited categories of investors, as disclosed in each Fund's current prospectus. In addition, no sub-accounting or other similar fees or any finder's fee payments are charged or paid on Class R6 shares.

6. Class T Shares

Class T shares are offered with a FESL. The schedule of sales charges applicable to a Fund and the circumstances under which the sales charges are subject to reduction or waiver are set forth in each Fund's current prospectus. Class T shares are also subject to payments under each Fund's Distribution and/or Shareholder Service Plan to reimburse the Distributor, its broker-dealer affiliates and other broker-dealers, financial institutions or intermediaries for distribution and/or shareholder service expenses incurred by them specifically on behalf of the Class, assessed at an annual rate of up to 0.25% of average daily net assets. The entire amount of the 12b-1 fee represents a service fee under the Rules of FINRA.

7. Class IR Shares

Class IR shares are offered without imposition of a FESL, CDSC or a 12b-1 fee for purchases of Fund shares by (i) investors who meet an initial minimum investment requirement of $5,000,000 or are defined contribution, defined benefit or other employer sponsored employee benefit plan, in each case provided that the plan trades through an intermediary that combines its clients' assets in a single omnibus account, whether or not such plan is qualified under the Internal Revenue Code, in each case subject to the discretion of the Adviser, and (ii) certain other limited categories of investors, as disclosed in each Fund's current prospectus. In addition, no sub-accounting or other similar fees or any finder's fee payments are charged or paid on Class IR shares. Class IR shares are eligible for revenue sharing arrangements, as disclosed in each Fund's Prospectus.

8. Additional Classes of Shares

The Boards of Directors/Trustees of the Funds have the authority to create additional Classes, or change existing Classes, from time to time, in accordance with Rule 18f-3 under the 1940 Act.

9. Calculation of the CDSC

Any applicable CDSC is calculated based upon the lesser of net asset value of the shares at the time of purchase or at the time of redemption. The CDSC does not apply to amounts representing an increase in share value due to capital appreciation and shares acquired through the reinvestment of dividends or capital gains distributions. The CDSC schedule applicable to a Fund and the circumstances in which the CDSC is subject to waiver are set forth in each Fund's prospectus.

II. EXPENSE ALLOCATIONS

Expenses incurred by a Fund will be allocated among the various Classes of shares pro rata based on the net assets of the Fund attributable to each Class, except that 12b-1 or service fees, sub-accounting fees and expenses of a Fund's operations which are directly attributable to such Class are allocated directly to that Class.

III. CLASS DESIGNATION

All shares of the Funds held prior to July 28, 1997 (other than the shares held by certain employee benefit plans established by Morgan Stanley & Co. LLC (formerly, Morgan Stanley & Co. Incorporated) and shares of Funds offered with a FESL) have been designated Class B shares. Shares held prior to July 28, 1997 by such employee benefit plans have been designated Class I shares. Shares held prior to July 28, 1997 of Funds offered with a FESL have been designated Class I shares. Prior to December 2007, Class I shares were named Class D shares. Prior to February 25, 2013, Class L shares were named Class C shares. Class IS shares were established on February 28, 2013. Prior to April 29, 2022, Class R6 shares were named Class IS shares. Class C shares were established on April 30, 2015. Class IR shares were established on December 6, 2017.

IV. CONVERSION FEATURES

In addition to the below conversion features, conversion features for a Class of shares are also effected in accordance with the procedures disclosed in each Fund's Prospectus.

1. Class I, Class R6 and Class IR

Subject to the Adviser's discretion and effected in accordance with the procedures disclosed in each Fund's Prospectus, Class I shares of a Fund may be converted into either Class R6 shares or Class IR shares of the same Fund, Class R6 shares of a Fund may be converted into Class IR shares of the same Fund and Class IR shares of a Fund may be converted into Class R6 shares of the same Fund.

2. Shares of a Fund may be converted into Class T shares, provided a shareholder meets the eligibility requirements for investing in the Class T shares. If a CDSC is applicable to such shares being converted, then the conversion to Class T shares may not occur until after the shareholder has held the shares for the applicable CDSC period. A Fund reserves the right to refuse any conversion request. Financial Intermediaries may impose restrictions on conversions, or may not make conversions available at all.

V. EXCHANGE PRIVILEGES

Same Share Class of Different Funds

Shares of each Class may be exchanged for shares of the same Class of the other open-end investment companies to which Morgan Stanley Investment Management Inc. acts as a sponsor and investment adviser (each, a "Morgan Stanley Multi-Class Fund") and for shares of a "Morgan Stanley Money Market Fund" (as such terms are defined in the prospectus of each Fund, and together with the "Morgan Stanley Multi-Class Funds," the "Morgan Stanley Funds"), if available, without the imposition of an exchange fee, as described in each Fund's prospectus and/or statement of additional information. Class T shares do not have exchange privileges.

This exchange privilege of each Fund may be terminated or revised at any time by the Fund upon such notice as may be required by applicable regulatory agencies as described in each Fund's prospectus.

VI. VOTING

Each Class shall have exclusive voting rights on any matter that relates solely to its 12b-1 Plan. In addition, each Class shall have separate voting rights on any matter submitted to shareholders in which the interests of one Class differ from the interests of any other Class.

MORGAN STANLEY FUNDS

AMENDED AND RESTATED MULTIPLE CLASS PLAN

PURSUANT TO RULE 18F-3

SCHEDULE A

AT APRIL 29, 2022

<u>CLASS A, C, L, I, R6, IR and T SHARES</u>

Morgan Stanley Europe Opportunity Fund Inc.

Morgan Stanley Global Fixed Income Opportunities Fund

Morgan Stanley Mortgage Securities Trust

Morgan Stanley Insight Fund

Morgan Stanley U.S. Government Securities Trust