# EDGAR Filing Document

**Accession Number:** 0000798244
**File Stem:** 0001752724-25-177400
**Filing Date:** 2025-7
**Character Count:** 44174
**Document Hash:** dc325e0723eea9e1933a0261262fdfb5
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-25-177400.hdr.sgml**: 20250725

**ACCESSION NUMBER**: 0001752724-25-177400

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 4

**CONFORMED PERIOD OF REPORT**: 20250531

**FILED AS OF DATE**: 20250725

**DATE AS OF CHANGE**: 20250725

**PERIOD START**: 20250831

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MFS SERIES TRUST I
- **CENTRAL INDEX KEY:** 0000798244

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1130

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-04777
- **FILM NUMBER:** 251148711

**BUSINESS ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **STREET 2:** 21ST FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
- **BUSINESS PHONE:** 18006372929

**MAIL ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **STREET 2:** 21ST FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MFS SERIES TRUST I /MA/
- **DATE OF NAME CHANGE:** 19940427

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MFS LIFETIME MANAGED SECTORS FUND
- **DATE OF NAME CHANGE:** 19930408

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** LIFETIME MANAGED SECTORS TRUST
- **DATE OF NAME CHANGE:** 19920703

## Series and Classes Contracts Data

### MFS Technology Fund (Series ID: S000000768)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000002249 | A            | MTCAX           |
| C000002250 | R4           | MTCJX           |
| C000002251 | B            | MTCBX           |
| C000002252 | C            | MTCCX           |
| C000002253 | I            | MTCIX           |
| C000002255 | R1           | MTCKX           |
| C000002257 | R2           | MTERX           |
| C000002258 | R3           | MTCHX           |
| C000124425 | R6           | MTCLX           |

## Nport-Ex

![](imgd87678ee1.gif)

### Quarterly Report
May 31, 2025

MFS<sup>®</sup> Technology Fund

![](img0623cae12.gif)

SCT-Q3

------

### Portfolio of Investments
5/31/25 (unaudited)

The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;&nbsp;**Value ($)** |
| Common Stocks – 99.4% | Common Stocks – 99.4% | Common Stocks – 99.4% |
| Business Services – 5.5% | Business Services – 5.5% |  |
| Accenture PLC, "A" | &nbsp;&nbsp;&nbsp;&nbsp;157228 | $49812975 |
| Factset Research Systems, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;62957 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28850675 |
| Verisk Analytics, Inc., "A" | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;62370 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19592912 |
| Zscaler, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;43530 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12001221 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$110257783 |
| Computer Software – 33.7% | Computer Software – 33.7% |  |
| Atlassian Corp. (a) | &nbsp;&nbsp;&nbsp;&nbsp;113170 | $23497487 |
| Cadence Design Systems, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;58643 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16834646 |
| Constellation Software, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6123 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22200298 |
| CrowdStrike Holdings, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22927 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10807100 |
| Datadog, Inc., "A" (a) | &nbsp;&nbsp;&nbsp;&nbsp;241814 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28505034 |
| DocuSign, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;475267 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;42113409 |
| Guidewire Software, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;123786 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26616466 |
| HubSpot, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;49874 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29420673 |
| Intuit, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;43628 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;32872389 |
| Microsoft Corp. (s) | &nbsp;&nbsp;&nbsp;&nbsp;397868 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;183162512 |
| Okta, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;256458 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26458772 |
| Oracle Corp. | &nbsp;&nbsp;&nbsp;&nbsp;261793 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;43334595 |
| Palantir Technologies, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;187469 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24704665 |
| Palo Alto Networks, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;56182 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10810540 |
| Salesforce, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;115961 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30772571 |
| SentinelOne, Inc., "A" (a) | &nbsp;&nbsp;&nbsp;&nbsp;291208 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5128173 |
| ServiceNow, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;47544 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48071263 |
| ServiceTitan, Inc., "A" (a)(l) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;65967 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7300568 |
| Snowflake, Inc., "A" (a) | &nbsp;&nbsp;&nbsp;&nbsp;168169 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;34587318 |
| Tyler Technologies, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39172 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22601852 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$669800331 |
| Computer Software - Systems – 19.4% | Computer Software - Systems – 19.4% |  |
| Apple, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;565862 | $113653383 |
| Arista Networks, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;99717 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8639481 |
| CDW Corp. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;57159 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10309197 |
| Cisco Systems, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;607916 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38323025 |
| Descartes Systems Group, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;296906 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;34425389 |
| EPAM Systems, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;130251 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22727497 |
| Hitachi Ltd. | &nbsp;&nbsp;1267000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35038411 |
| International Business Machines Corp. | &nbsp;&nbsp;&nbsp;&nbsp;268738 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;69619266 |
| Shopify, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;486806 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;52195339 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$384930988 |
| Consumer Services – 0.5% | Consumer Services – 0.5% |  |
| Booking Holdings, Inc. (s) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1753 | $9674684 |
| Electrical Equipment – 0.8% | Electrical Equipment – 0.8% |  |
| Amphenol Corp., "A" | &nbsp;&nbsp;&nbsp;&nbsp;188329 | $16936427 |
| Electronics – 17.1% | Electronics – 17.1% |  |
| Analog Devices, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;77866 | $16661767 |
| Applied Materials, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;82646 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12954760 |
| Broadcom, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;404977 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;98032782 |
| KLA Corp. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15218 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11518200 |
| Lam Research Corp. | &nbsp;&nbsp;&nbsp;&nbsp;152045 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12283715 |
| MACOM Technology Solutions Holdings, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;54896 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6675903 |
| Marvell Technology, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;120709 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7265475 |
| NVIDIA Corp. | &nbsp;&nbsp;1004318 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;135713491 |

---

------

Portfolio of Investments (unaudited) – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;&nbsp;**Value ($)** |
| Common Stocks – continued | Common Stocks – continued | Common Stocks – continued |
| Electronics – continued | Electronics – continued |  |
| Onto Innovation, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;61504 | $5654678 |
| Taiwan Semiconductor Manufacturing Co. Ltd. | &nbsp;&nbsp;&nbsp;&nbsp;775000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24643688 |
| Teradyne, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;96925 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7618305 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$339022764 |
| Insurance – 0.6% | Insurance – 0.6% |  |
| Aon PLC | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;31172 | $11598478 |
| Interactive Media Services – 19.4% | Interactive Media Services – 19.4% |  |
| Alphabet, Inc., "A" (s) | &nbsp;&nbsp;&nbsp;&nbsp;901560 | $154833914 |
| Meta Platforms, Inc., "A" (s) | &nbsp;&nbsp;&nbsp;&nbsp;354497 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;229533263 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$384367177 |
| Internet – 0.1% | Internet – 0.1% |  |
| Gartner, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6385 | $2786542 |
| Leisure & Toys – 0.3% | Leisure & Toys – 0.3% |  |
| Take-Two Interactive Software, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25944 | $5870608 |
| Other Banks & Diversified Financials – 1.0% | Other Banks & Diversified Financials – 1.0% |  |
| S&P Global, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38292 | $19638435 |
| Specialty Stores – 1.0% | Specialty Stores – 1.0% |  |
| Amazon.com, Inc. (a)(s) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;94146 | $19300871 |
| **Total Common Stocks** |  | &nbsp;&nbsp;**$1974185088** |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Strike<br> Price** | &nbsp;&nbsp;**First<br> Exercise** |  |  |
| Warrants – 0.0% |  |  |  |  |
| Computer Software – 0.0% | Computer Software – 0.0% | Computer Software – 0.0% | Computer Software – 0.0% | Computer Software – 0.0% |
| Constellation Software, Inc. (CAD 100 principal amount of Series 2 Debentures for 1 warrant, Expiration 3/31/40) (a) | CAD 11.5 | &nbsp;&nbsp;N/A | 9895 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 |

---

---

| | | |
|:---|:---|:---|
| Mutual Funds (h) – 0.6% | Mutual Funds (h) – 0.6% | Mutual Funds (h) – 0.6% |
| Money Market Funds – 0.6% | Money Market Funds – 0.6% |  |
| MFS Institutional Money Market Portfolio, 4.35% (v) | 12444776 | &nbsp;&nbsp;&nbsp;$12444776 |
| Collateral for Securities Loaned – 0.3% | Collateral for Securities Loaned – 0.3% | Collateral for Securities Loaned – 0.3% |
| JPMorgan U.S. Government Money Market Fund - Class IM Shares, 4.25% (j) | &nbsp;&nbsp;6144600 | &nbsp;&nbsp;&nbsp;$6144600 |
| Other Assets, Less Liabilities – (0.3)% |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(6768036) |
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | &nbsp;&nbsp;&nbsp;**$1986006428** |

---

(a) Non-income producing security.

(h) An affiliated issuer, which may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end,
the aggregate values of the fund's investments in affiliated issuers and in unaffiliated issuers were $12,444,776 and $1,980,329,688, respectively.

(j) The rate quoted is the annualized seven-day yield of the fund at period end.

(l) A portion of this security is on loan.

(s) Security or a portion of the security was pledged to cover collateral requirements for securities sold short and/or certain derivative transactions.

(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized
seven-day yield of the fund at period end.

------

Portfolio of Investments (unaudited) – continued

---

| | |
|:---|:---|
| Abbreviations indicate amounts shown in currencies other than the U.S. dollar. All amounts are stated in U.S. dollars unless otherwise indicated. A list of abbreviations is shown below: | Abbreviations indicate amounts shown in currencies other than the U.S. dollar. All amounts are stated in U.S. dollars unless otherwise indicated. A list of abbreviations is shown below: |
| CAD | Canadian Dollar |

---

At May 31, 2025, the fund had liquid securities with an aggregate value of $586,258 to cover any collateral or margin obligations for securities sold short.

See attached supplemental information. For more information see notes to financial statements as disclosed in the most recent semiannual or annual report.

------

### Supplemental Information
5/31/25 (unaudited)

The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.

(1) Investment Valuations

Subject to its oversight, the fund's Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund's investments to MFS as the fund's adviser, pursuant to the fund's valuation policy and procedures which have been adopted by the adviser and approved by the Board. In accordance with Rule 2a-5 under the Investment Company Act of 1940, the Board of Trustees designated the adviser as the "valuation designee" of the fund. If the adviser, as valuation designee, determines that reliable market quotations are not readily available for an investment, the investment is valued at fair value as determined in good faith by the adviser in accordance with the adviser's fair valuation policy and procedures.

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

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

Forward foreign currency exchange contracts are generally valued at the mean of bid and asked prices for the time period interpolated from rates provided by a third-party pricing service for proximate time periods. Open-end investment companies are generally valued at net asset value per share. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.

Under the fund's valuation policy and procedures, market quotations are not considered to be readily available for debt instruments, floating rate loans, and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services or otherwise determined by the adviser in accordance with the adviser's fair valuation policy and procedures. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. In determining values, third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, spreads and other market data. An investment may also be valued at fair value if the adviser determines that the investment's value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund's net asset value, or after the halt of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund's net asset value may be deemed to have a material effect on the value of securities traded in foreign markets. Accordingly, the fund's foreign equity securities may often be valued at fair value. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund's net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund's net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.

Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes significant unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. The following is a summary of the levels used as of May 31, 2025 in valuing the fund's assets and liabilities:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Financial Instruments** | &nbsp;&nbsp;&nbsp;**Level 1** | &nbsp;&nbsp;&nbsp;**Level 2** | &nbsp;&nbsp;&nbsp;**Level 3** | &nbsp;&nbsp;&nbsp;**Total** |
| Equity Securities: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;United States | &nbsp;&nbsp;&nbsp;$1805681963 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;$1805681963 |
| &nbsp;&nbsp;&nbsp;Canada | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;108821026 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0 | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;108821026 |
| &nbsp;&nbsp;&nbsp;Japan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;35038411 | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35038411 |
| &nbsp;&nbsp;&nbsp;Taiwan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;24643688 | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24643688 |
| Investment Companies | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18589376 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18589376 |
| Total | &nbsp;&nbsp;&nbsp;$1933092365 | &nbsp;&nbsp;&nbsp;$59682099 | &nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;$1992774464 |

---

For further information regarding security characteristics, see the Portfolio of Investments.

------

Supplemental Information (unaudited) – continued

(2) Investments in Affiliated Issuers

An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the following were affiliated issuers for the period ended May 31, 2025:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Affiliated Issuers** | &nbsp;&nbsp;**Beginning<br> Value** | &nbsp;&nbsp;**Purchases** | &nbsp;&nbsp;**Sales<br> Proceeds** | &nbsp;&nbsp;**Realized<br> Gain<br> (Loss)** | &nbsp;&nbsp;**Change in<br> Unrealized<br> Appreciation or<br> Depreciation** | &nbsp;&nbsp;**Ending<br> Value** |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;$30311929 | &nbsp;&nbsp;$157205991 | &nbsp;&nbsp;$175066633 | &nbsp;&nbsp;$1574 | &nbsp;&nbsp;$(8085) | &nbsp;&nbsp;$12444776 |

---

---

| | | |
|:---|:---|:---|
| **Affiliated Issuers** | &nbsp;&nbsp;**Dividend<br> Income** | &nbsp;&nbsp;**Capital Gain<br> Distributions** |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;$1067703 | &nbsp;&nbsp;$— |

---

## Form NPORT-P: Monthly Portfolio Investments Report

### NPORT-P: Part A: General Information

**Item A.1. Information about the Registrant.**

- **a. Name of Registrant:** MFS SERIES TRUST I

- **b. Investment Company Act file number:** 811-04777

- **c. CIK number of Registrant:** 0000798244

- **d. LEI of Registrant:** 549300QRB5FQ35HH3533

- **e. Address and telephone number of Registrant.**

  - **Street Address 1:** 111 HUNTINGTON AVENUE

  - **City:** BOSTON

  - **State:** MA

  - **Foreign country:** US

  - **Zip / Postal Code:** 02199

  - **Telephone number:** 617-954-5000

**Item A.2. Information about the Series.**

- **a. Name of Series:** MFS Technology Fund

- **b. EDGAR series identifier (if any):** S000000768

- **c. LEI of Series:** RFHV6YCC4ZBRJX8V4134

**Item A.3. Reporting period.**

- **a. Date of fiscal year-end:** 2025-08-31

- **b. Date as of which information is reported:** 2025-05-31

**Item A.4. Final filing**

Does the Fund anticipate that this will be its final filing on Form N-PORT? **No**

### Fund Information

**Total Assets:** $1994366361.14

**Total Liabilities:** $7432546.13

**Net Assets:** $1986933815.01

**Cash Not Reported:** $5210.04

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000002250 | -10.22%              | 0.98%                | 9.94%                |
| Class ID C000002252 | -10.30%              | 0.89%                | 9.85%                |
| Class ID C000002253 | -10.23%              | 0.97%                | 9.94%                |
| Class ID C000002257 | -10.25%              | 0.92%                | 9.90%                |
| Class ID C000002255 | -10.28%              | 0.87%                | 9.87%                |
| Class ID C000002249 | -10.25%              | 0.95%                | 9.93%                |
| Class ID C000124425 | -10.22%              | 0.98%                | 9.94%                |
| Class ID C000002251 | -10.28%              | 0.89%                | 9.83%                |
| Class ID C000002258 | -10.24%              | 0.95%                | 9.91%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $-8085200.90             | $-199836597.97                             |
| Month 2  | $6641030.62              | $10166051.57                               |
| Month 3  | $6309041.37              | $173570113.71                              |

### Schedule of Portfolio Investments

| Name                                      | Title                                     | Identifiers                                   | Payoff Profile   | Asset Category   | Issuer Category   | Country   |   Balance | Units   | Value (USD)   | % of Net Assets   | Maturity Date   | Coupon Type   | Annualized Rate (%)   | Restricted?   |   Fair Value Level | Lending Status   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| EPAM Systems Inc                          | EPAM Systems Inc                          | CUSIP: 29414B104<br>LEI: 549300XCR4R530HJP604 | Long             | EC               | CORP              | US        |    130251 | NS      | $22727496.99  | 1.14%             |  |  |  | No            |                  1 | On Loan: No      |
| Cisco Systems Inc                         | Cisco Systems Inc                         | CUSIP: 17275R102<br>LEI: 549300LKFJ962MZ46593 | Long             | EC               | CORP              | US        |    607916 | NS      | $38323024.64  | 1.93%             |  |  |  | No            |                  1 | On Loan: No      |
| Salesforce Inc                            | Salesforce Inc                            | CUSIP: 79466L302<br>LEI: RCGZFPDMRW58VJ54VR07 | Long             | EC               | CORP              | US        |    115961 | NS      | $30772570.57  | 1.55%             |  |  |  | No            |                  1 | On Loan: No      |
| Intuit Inc                                | Intuit Inc                                | CUSIP: 461202103<br>LEI: VI90HBPH7XSFMB9E4M29 | Long             | EC               | CORP              | US        |     43628 | NS      | $32872389.16  | 1.65%             |  |  |  | No            |                  1 | On Loan: No      |
| Accenture PLC                             | Accenture PLC                             | CUSIP: 000000000<br>LEI: 5493000EWHDSR3MZWH98 | Long             | EC               | CORP              | IE        |    157228 | NS      | $49812974.96  | 2.51%             |  |  |  | No            |                  1 | On Loan: No      |
| Atlassian Corp                            | Atlassian Corp                            | CUSIP: 049468101<br>LEI: 549300V7ZY5P02D2MY38 | Long             | EC               | CORP              | US        |    113170 | NS      | $23497487.10  | 1.18%             |  |  |  | No            |                  1 | On Loan: No      |
| Okta Inc                                  | Okta Inc                                  | CUSIP: 679295105<br>LEI: 549300N8J06I8MRHU620 | Long             | EC               | CORP              | US        |    256458 | NS      | $26458771.86  | 1.33%             |  |  |  | No            |                  1 | On Loan: No      |
| International Business Machines Corp      | International Business Machines Corp      | CUSIP: 459200101<br>LEI: VGRQXHF3J8VDLUA7XE92 | Long             | EC               | CORP              | US        |    268738 | NS      | $69619266.28  | 3.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Amphenol Corp                             | Amphenol Corp                             | CUSIP: 032095101<br>LEI: 549300D3L3G0R4U4VT04 | Long             | EC               | CORP              | US        |    188329 | NS      | $16936426.97  | 0.85%             |  |  |  | No            |                  1 | On Loan: No      |
| Zscaler Inc                               | Zscaler Inc                               | CUSIP: 98980G102<br>LEI: 529900MZ0RTK1BWRNF46 | Long             | EC               | CORP              | US        |     43530 | NS      | $12001221.00  | 0.60%             |  |  |  | No            |                  1 | On Loan: No      |
| MACOM Technology Solutions Holdings Inc   | MACOM Technology Solutions Holdings Inc   | CUSIP: 55405Y100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     54896 | NS      | $6675902.56   | 0.34%             |  |  |  | No            |                  1 | On Loan: No      |
| Constellation Software Inc/Canada         | Constellation Software Inc/Canada         | CUSIP: 21037X100<br>LEI: 549300B6PYHMCTDWQV29 | Long             | EC               | CORP              | CA        |      6123 | NS      | $22200297.65  | 1.12%             |  |  |  | No            |                  1 | On Loan: No      |
| Teradyne Inc                              | Teradyne Inc                              | CUSIP: 880770102<br>LEI: C3X4YJ278QNZHRJULN75 | Long             | EC               | CORP              | US        |     96925 | NS      | $7618305.00   | 0.38%             |  |  |  | No            |                  1 | On Loan: No      |
| HubSpot Inc                               | HubSpot Inc                               | CUSIP: 443573100<br>LEI: 529900BLNVEW0MVKJB37 | Long             | EC               | CORP              | US        |     49874 | NS      | $29420672.60  | 1.48%             |  |  |  | No            |                  1 | On Loan: No      |
| Hitachi Ltd                               | Hitachi Ltd                               | CUSIP: 000000000<br>LEI: 549300T6IPOCDWLKC615 | Long             | EC               | CORP              | JP        |   1267000 | NS      | $35038410.89  | 1.76%             |  |  |  | No            |                  2 | On Loan: No      |
| Alphabet Inc                              | Alphabet Inc                              | CUSIP: 02079K305<br>LEI: 5493006MHB84DD0ZWV18 | Long             | EC               | CORP              | US        |    901560 | NS      | $154833914.40 | 7.79%             |  |  |  | No            |                  1 | On Loan: No      |
| CONSTELLATION SOFTWARE INC                | CONSTELLATION SOFTWARE INC                | CUSIP: 000000000<br>LEI: 549300B6PYHMCTDWQV29 | N/A              | DE               |  | CA        |      9895 | NS      | $0.00         | 0.00%             |  |  |  | No            |                  2 | On Loan: No      |
| Lam Research Corp                         | Lam Research Corp                         | CUSIP: 512807306<br>LEI: 549300I4GMO6D34U1T02 | Long             | EC               | CORP              | US        |    152045 | NS      | $12283715.55  | 0.62%             |  |  |  | No            |                  1 | On Loan: No      |
| JP Morgan US Government Money Market Fund | JP Morgan US Government Money Market Fund | CUSIP: 4812C2270<br>LEI: 549300NQ5E5B7ZV4T516 | Long             | STIV             | RF                | US        |   6144600 | NS      | $6144600.00   | 0.31%             |  |  |  | No            |                  1 | On Loan: No      |
| CDW Corp/DE                               | CDW Corp/DE                               | CUSIP: 12514G108<br>LEI: 9845001B052ABF0B6755 | Long             | EC               | CORP              | US        |     57159 | NS      | $10309197.24  | 0.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Tyler Technologies Inc                    | Tyler Technologies Inc                    | CUSIP: 902252105<br>LEI: 25490040SMU4Z8LBCW70 | Long             | EC               | CORP              | US        |     39172 | NS      | $22601852.28  | 1.14%             |  |  |  | No            |                  1 | On Loan: No      |
| Microsoft Corp                            | Microsoft Corp                            | CUSIP: 594918104<br>LEI: INR2EJN1ERAN0W5ZP974 | Long             | EC               | CORP              | US        |    397868 | NS      | $183162512.48 | 9.22%             |  |  |  | No            |                  1 | On Loan: No      |
| Applied Materials Inc                     | Applied Materials Inc                     | CUSIP: 038222105<br>LEI: 41BNNE1AFPNAZELZ6K07 | Long             | EC               | CORP              | US        |     82646 | NS      | $12954760.50  | 0.65%             |  |  |  | No            |                  1 | On Loan: No      |
| NVIDIA Corp                               | NVIDIA Corp                               | CUSIP: 67066G104<br>LEI: 549300S4KLFTLO7GSQ80 | Long             | EC               | CORP              | US        |   1004318 | NS      | $135713491.34 | 6.83%             |  |  |  | No            |                  1 | On Loan: No      |
| Take-Two Interactive Software Inc         | Take-Two Interactive Software Inc         | CUSIP: 874054109<br>LEI: BOMSTHHJK882EWYX3334 | Long             | EC               | CORP              | US        |     25944 | NS      | $5870608.32   | 0.30%             |  |  |  | No            |                  1 | On Loan: No      |
| Gartner Inc                               | Gartner Inc                               | CUSIP: 366651107<br>LEI: PP55B5R38BFB8O8HH686 | Long             | EC               | CORP              | US        |      6385 | NS      | $2786541.70   | 0.14%             |  |  |  | No            |                  1 | On Loan: No      |
| ServiceTitan Inc                          | ServiceTitan Inc                          | CUSIP: 81764X103<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     65967 | NS      | $7300567.89   | 0.37%             |  |  |  | No            |                  1 | On Loan: —       |
| Guidewire Software Inc                    | Guidewire Software Inc                    | CUSIP: 40171V100<br>LEI: 549300WXSG0J8IXZCK32 | Long             | EC               | CORP              | US        |    123786 | NS      | $26616465.72  | 1.34%             |  |  |  | No            |                  1 | On Loan: No      |
| Palantir Technologies Inc                 | Palantir Technologies Inc                 | CUSIP: 69608A108<br>LEI: 549300UVN46B3BBDHO85 | Long             | EC               | CORP              | US        |    187469 | NS      | $24704664.82  | 1.24%             |  |  |  | No            |                  1 | On Loan: No      |
| Marvell Technology Inc                    | Marvell Technology Inc                    | CUSIP: 573874104<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    120709 | NS      | $7265474.71   | 0.37%             |  |  |  | No            |                  1 | On Loan: No      |
| Cadence Design Systems Inc                | Cadence Design Systems Inc                | CUSIP: 127387108<br>LEI: GCT7RXJOGLXPV0NXZY22 | Long             | EC               | CORP              | US        |     58643 | NS      | $16834646.01  | 0.85%             |  |  |  | No            |                  1 | On Loan: No      |
| Broadcom Inc                              | Broadcom Inc                              | CUSIP: 11135F101<br>LEI: 549300WV6GIDOZJTV909 | Long             | EC               | CORP              | US        |    404977 | NS      | $98032782.39  | 4.93%             |  |  |  | No            |                  1 | On Loan: No      |
| Descartes Systems Group Inc/The           | Descartes Systems Group Inc/The           | CUSIP: 249906108<br>LEI: 875500NEPA7JI5EOMN45 | Long             | EC               | CORP              | CA        |    296906 | NS      | $34425389.09  | 1.73%             |  |  |  | No            |                  1 | On Loan: No      |
| Arista Networks Inc                       | Arista Networks Inc                       | CUSIP: 040413205<br>LEI: 635400H1WKBLOQERUU95 | Long             | EC               | CORP              | US        |     99717 | NS      | $8639480.88   | 0.43%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Institutional Money Market Portfolio  | MFS Institutional Money Market Portfolio  | CUSIP: 55291X109<br>LEI: 5L2W638H85N8T1136O07 | Long             | EC               | RF                | US        |  12377292 | NS      | $12377291.74  | 0.62%             |  |  |  | No            |                  1 | On Loan: No      |
| ServiceNow Inc                            | ServiceNow Inc                            | CUSIP: 81762P102<br>LEI: 549300HJTQM36M0E1G39 | Long             | EC               | CORP              | US        |     47544 | NS      | $48071262.96  | 2.42%             |  |  |  | No            |                  1 | On Loan: No      |
| FactSet Research Systems Inc              | FactSet Research Systems Inc              | CUSIP: 303075105<br>LEI: 549300ZSJE7NBK6K9P30 | Long             | EC               | CORP              | US        |     62957 | NS      | $28850674.82  | 1.45%             |  |  |  | No            |                  1 | On Loan: No      |
| SentinelOne Inc                           | SentinelOne Inc                           | CUSIP: 81730H109<br>LEI: 984500DCD44DBF954221 | Long             | EC               | CORP              | US        |    291208 | NS      | $5128172.88   | 0.26%             |  |  |  | No            |                  1 | On Loan: No      |
| Analog Devices Inc                        | Analog Devices Inc                        | CUSIP: 032654105<br>LEI: GYVOE5EZ4GDAVTU4CQ61 | Long             | EC               | CORP              | US        |     77866 | NS      | $16661766.68  | 0.84%             |  |  |  | No            |                  1 | On Loan: No      |
| Snowflake Inc                             | Snowflake Inc                             | CUSIP: 833445109<br>LEI: 254900CJNSY1K7T53Z16 | Long             | EC               | CORP              | US        |    168169 | NS      | $34587318.23  | 1.74%             |  |  |  | No            |                  1 | On Loan: No      |
| Meta Platforms Inc                        | Meta Platforms Inc                        | CUSIP: 30303M102<br>LEI: BQ4BKCS1HXDV9HN80Z93 | Long             | EC               | CORP              | US        |    354497 | NS      | $229533262.53 | 11.55%            |  |  |  | No            |                  1 | On Loan: No      |
| Oracle Corp                               | Oracle Corp                               | CUSIP: 68389X105<br>LEI: 1Z4GXXU7ZHVWFCD8TV52 | Long             | EC               | CORP              | US        |    261793 | NS      | $43334595.29  | 2.18%             |  |  |  | No            |                  1 | On Loan: No      |
| Crowdstrike Holdings Inc                  | Crowdstrike Holdings Inc                  | CUSIP: 22788C105<br>LEI: 549300YBY08K9KM4HX32 | Long             | EC               | CORP              | US        |     22927 | NS      | $10807099.99  | 0.54%             |  |  |  | No            |                  1 | On Loan: No      |
| Aon PLC                                   | Aon PLC                                   | CUSIP: 000000000<br>LEI: 635400FALWQYX5E6QC64 | Long             | EC               | CORP              | IE        |     31172 | NS      | $11598477.76  | 0.58%             |  |  |  | No            |                  1 | On Loan: No      |
| Palo Alto Networks Inc                    | Palo Alto Networks Inc                    | CUSIP: 697435105<br>LEI: 549300QXR2YVZV231H43 | Long             | EC               | CORP              | US        |     56182 | NS      | $10810540.44  | 0.54%             |  |  |  | No            |                  1 | On Loan: No      |
| Datadog Inc                               | Datadog Inc                               | CUSIP: 23804L103<br>LEI: 549300F6JNO0KRPO1K63 | Long             | EC               | CORP              | US        |    241814 | NS      | $28505034.32  | 1.43%             |  |  |  | No            |                  1 | On Loan: No      |
| Docusign Inc                              | Docusign Inc                              | CUSIP: 256163106<br>LEI: 549300Q7PVDWRZ39JG09 | Long             | EC               | CORP              | US        |    475267 | NS      | $42113408.87  | 2.12%             |  |  |  | No            |                  1 | On Loan: No      |
| Shopify Inc                               | Shopify Inc                               | CUSIP: 82509L107<br>LEI: 549300HGQ43STJLLP808 | Long             | EC               | CORP              | CA        |    486806 | NS      | $52195339.32  | 2.63%             |  |  |  | No            |                  1 | On Loan: No      |
| KLA Corp                                  | KLA Corp                                  | CUSIP: 482480100<br>LEI: 549300H0BF5JCG96TJ81 | Long             | EC               | CORP              | US        |     15218 | NS      | $11518199.84  | 0.58%             |  |  |  | No            |                  1 | On Loan: No      |
| Verisk Analytics Inc                      | Verisk Analytics Inc                      | CUSIP: 92345Y106<br>LEI: 549300I1YSWNIRKBWP67 | Long             | EC               | CORP              | US        |     62370 | NS      | $19592911.80  | 0.99%             |  |  |  | No            |                  1 | On Loan: No      |
| Apple Inc                                 | Apple Inc                                 | CUSIP: 037833100<br>LEI: HWUPKR0MPOU8FGXBT394 | Long             | EC               | CORP              | US        |    565862 | NS      | $113653382.70 | 5.72%             |  |  |  | No            |                  1 | On Loan: No      |
| Taiwan Semiconductor Manufacturing Co Ltd | Taiwan Semiconductor Manufacturing Co Ltd | CUSIP: 000000000<br>LEI: 549300KB6NK5SBD14S87 | Long             | EC               | CORP              | TW        |    775000 | NS      | $24643687.74  | 1.24%             |  |  |  | No            |                  2 | On Loan: No      |
| Booking Holdings Inc                      | Booking Holdings Inc                      | CUSIP: 09857L108<br>LEI: FXM8FAOHMYDIPD38UZ17 | Long             | EC               | CORP              | US        |      1753 | NS      | $9674684.29   | 0.49%             |  |  |  | No            |                  1 | On Loan: No      |
| S&P Global Inc                            | S&P Global Inc                            | CUSIP: 78409V104<br>LEI: Y6X4K52KMJMZE7I7MY94 | Long             | EC               | CORP              | US        |     38292 | NS      | $19638435.12  | 0.99%             |  |  |  | No            |                  1 | On Loan: No      |
| Amazon.com Inc                            | Amazon.com Inc                            | CUSIP: 023135106<br>LEI: ZXTILKJKG63JELOEG630 | Long             | EC               | CORP              | US        |     94146 | NS      | $19300871.46  | 0.97%             |  |  |  | No            |                  1 | On Loan: No      |
| Onto Innovation Inc                       | Onto Innovation Inc                       | CUSIP: 683344105<br>LEI: 254900RXZVN73CHOO062 | Long             | EC               | CORP              | US        |     61504 | NS      | $5654677.76   | 0.28%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2025-06-27

**Name of Applicant:** MFS SERIES TRUST I

**Signature:** James Byrne

**Name of Signer:** James Byrne

**Title:** Assistant Treasurer