# EDGAR Filing Document

**Accession Number:** 0000798244
**File Stem:** 0001752724-25-177376
**Filing Date:** 2025-7
**Character Count:** 63434
**Document Hash:** 1df2135fee7315dd63b09ae62510c220
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-25-177376.hdr.sgml**: 20250725

**ACCESSION NUMBER**: 0001752724-25-177376

**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:** 251148687

**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 Low Volatility Equity Fund (Series ID: S000042701)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000132013 | A            | MLVAX           |
| C000132014 | B            | MLVBX           |
| C000132015 | C            | MLVGX           |
| C000132016 | I            | MLVHX           |
| C000132017 | R1           | MLVMX           |
| C000132018 | R2           | MLVOX           |
| C000132019 | R3           | MLVPX           |
| C000132020 | R4           | MLVRX           |
| C000132021 | R6           | MLVTX           |

## Nport-Ex

![](img5ecc3aa01.gif)

### Quarterly Report
May 31, 2025

MFS<sup>®</sup> Low Volatility<br> Equity Fund

![](img80513c292.gif)

LVU-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% |
| Aerospace & Defense – 4.5% | Aerospace & Defense – 4.5% |  |
| Amentum Holdings, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;745 | &nbsp;&nbsp;$15388 |
| CACI International, Inc., "A" (a) | &nbsp;&nbsp;&nbsp;&nbsp;4241 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1815148 |
| General Dynamics Corp. | &nbsp;&nbsp;&nbsp;&nbsp;6359 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1770918 |
| Honeywell International, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;8770 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1987896 |
| Leidos Holdings, Inc. | &nbsp;&nbsp;&nbsp;10883 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1616343 |
| Teledyne Technologies, Inc. (a) | &nbsp;&nbsp;&nbsp;17318 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8639257 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;$15844950 |
| Automotive – 0.5% | Automotive – 0.5% |  |
| Lear Corp. | &nbsp;&nbsp;&nbsp;17864 | &nbsp;&nbsp;$1615263 |
| Biotechnology – 0.4% | Biotechnology – 0.4% |  |
| Biogen, Inc. (a) | &nbsp;&nbsp;&nbsp;11403 | &nbsp;&nbsp;$1479995 |
| Broadcasting – 1.1% | Broadcasting – 1.1% |  |
| Omnicom Group, Inc. | &nbsp;&nbsp;&nbsp;51512 | &nbsp;&nbsp;$3783041 |
| Brokerage & Asset Managers – 0.7% | Brokerage & Asset Managers – 0.7% |  |
| Cboe Global Markets, Inc. | &nbsp;&nbsp;&nbsp;11509 | &nbsp;&nbsp;$2636942 |
| Business Services – 5.8% | Business Services – 5.8% |  |
| Accenture PLC, "A" | &nbsp;&nbsp;&nbsp;23044 | &nbsp;&nbsp;$7300800 |
| Cognizant Technology Solutions Corp., "A" | &nbsp;&nbsp;109155 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8840464 |
| Fiserv, Inc. (a) | &nbsp;&nbsp;&nbsp;16237 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2643221 |
| Verisk Analytics, Inc., "A" | &nbsp;&nbsp;&nbsp;&nbsp;5836 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1833321 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;$20617806 |
| Chemicals – 0.5% | Chemicals – 0.5% |  |
| Eastman Chemical Co. | &nbsp;&nbsp;&nbsp;23126 | &nbsp;&nbsp;$1812385 |
| Computer Software – 6.0% | Computer Software – 6.0% |  |
| ACI Worldwide, Inc. (a) | &nbsp;&nbsp;&nbsp;27029 | &nbsp;&nbsp;$1250362 |
| Intuit, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;7030 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5296894 |
| Microsoft Corp. | &nbsp;&nbsp;&nbsp;17892 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8236761 |
| Tyler Technologies, Inc. (a) | &nbsp;&nbsp;&nbsp;10994 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6343428 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;$21127445 |
| Construction – 0.9% | Construction – 0.9% |  |
| AvalonBay Communities, Inc., REIT | &nbsp;&nbsp;&nbsp;&nbsp;7959 | &nbsp;&nbsp;$1645682 |
| Essex Property Trust, Inc., REIT | &nbsp;&nbsp;&nbsp;&nbsp;5053 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1434547 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$3080229 |
| Consumer Products – 4.0% | Consumer Products – 4.0% |  |
| Colgate-Palmolive Co. | &nbsp;&nbsp;&nbsp;39694 | &nbsp;&nbsp;$3689160 |
| Kimberly-Clark Corp. | &nbsp;&nbsp;&nbsp;13147 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1890013 |
| Procter & Gamble Co. | &nbsp;&nbsp;&nbsp;40060 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6805793 |
| Reynolds Consumer Products, Inc. | &nbsp;&nbsp;&nbsp;74145 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1637122 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;$14022088 |
| Electrical Equipment – 5.6% | Electrical Equipment – 5.6% |  |
| AMETEK, Inc. | &nbsp;&nbsp;&nbsp;12335 | &nbsp;&nbsp;$2204758 |
| Amphenol Corp., "A" | &nbsp;&nbsp;&nbsp;88380 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7948013 |
| TE Connectivity PLC | &nbsp;&nbsp;&nbsp;60198 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9635894 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;$19788665 |

---

------

Portfolio of Investments (unaudited) – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;&nbsp;**Value ($)** |
| Common Stocks – continued | Common Stocks – continued | Common Stocks – continued |
| Electronics – 4.0% | Electronics – 4.0% |  |
| Analog Devices, Inc. | &nbsp;&nbsp;&nbsp;27884 | &nbsp;&nbsp;$5966618 |
| Corning, Inc. | &nbsp;&nbsp;121091 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6004903 |
| NXP Semiconductors N.V. | &nbsp;&nbsp;&nbsp;12056 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2304263 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;$14275784 |
| Energy - Independent – 1.2% | Energy - Independent – 1.2% |  |
| EOG Resources, Inc. | &nbsp;&nbsp;&nbsp;24287 | &nbsp;&nbsp;$2636839 |
| Expand Energy Corp. | &nbsp;&nbsp;&nbsp;14306 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1661356 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$4298195 |
| Engineering - Construction – 0.4% | Engineering - Construction – 0.4% |  |
| Jacobs Solutions, Inc. | &nbsp;&nbsp;&nbsp;12141 | &nbsp;&nbsp;$1533408 |
| Food & Beverages – 4.6% | Food & Beverages – 4.6% |  |
| General Mills, Inc. | &nbsp;&nbsp;140109 | &nbsp;&nbsp;$7602314 |
| Mondelez International, Inc. | &nbsp;&nbsp;&nbsp;63846 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4308967 |
| PepsiCo, Inc. | &nbsp;&nbsp;&nbsp;33978 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4466408 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;$16377689 |
| Food & Drug Stores – 0.5% | Food & Drug Stores – 0.5% |  |
| Albertsons Cos., Inc., "A" | &nbsp;&nbsp;&nbsp;84134 | &nbsp;&nbsp;$1870299 |
| Gaming & Lodging – 1.1% | Gaming & Lodging – 1.1% |  |
| Hilton Worldwide Holdings, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;9652 | &nbsp;&nbsp;$2397943 |
| Ryman Hospitality Properties, Inc., REIT | &nbsp;&nbsp;&nbsp;17071 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1657765 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$4055708 |
| Health Maintenance Organizations – 1.1% | Health Maintenance Organizations – 1.1% |  |
| Cigna Group | &nbsp;&nbsp;&nbsp;11945 | &nbsp;&nbsp;$3782265 |
| Insurance – 9.1% | Insurance – 9.1% |  |
| American International Group, Inc. | &nbsp;&nbsp;&nbsp;18090 | &nbsp;&nbsp;$1531138 |
| Ameriprise Financial, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;3623 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1844977 |
| Assurant, Inc. | &nbsp;&nbsp;&nbsp;15062 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3057285 |
| AXIS Capital Holdings Ltd. | &nbsp;&nbsp;&nbsp;15546 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1613675 |
| Chubb Ltd. | &nbsp;&nbsp;&nbsp;18107 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5381400 |
| Equitable Holdings, Inc. | &nbsp;&nbsp;&nbsp;27471 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1452392 |
| Everest Group Ltd. | &nbsp;&nbsp;&nbsp;14849 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5155424 |
| Hanover Insurance Group, Inc. | &nbsp;&nbsp;&nbsp;11585 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2038728 |
| Hartford Insurance Group, Inc. | &nbsp;&nbsp;&nbsp;25541 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3316244 |
| MetLife, Inc. | &nbsp;&nbsp;&nbsp;23776 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1868318 |
| Principal Financial Group, Inc. | &nbsp;&nbsp;&nbsp;23606 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1838671 |
| Reinsurance Group of America, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;8438 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1715361 |
| Voya Financial, Inc. | &nbsp;&nbsp;&nbsp;22993 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1529494 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;$32343107 |
| Interactive Media Services – 2.0% | Interactive Media Services – 2.0% |  |
| Alphabet, Inc., "A" | &nbsp;&nbsp;&nbsp;41370 | &nbsp;&nbsp;$7104884 |
| Machinery & Tools – 1.0% | Machinery & Tools – 1.0% |  |
| Eaton Corp. PLC | &nbsp;&nbsp;&nbsp;&nbsp;6369 | &nbsp;&nbsp;$2039354 |
| Wabtec Corp. | &nbsp;&nbsp;&nbsp;&nbsp;8265 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1672175 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$3711529 |
| Major Banks – 1.2% | Major Banks – 1.2% |  |
| Bank of America Corp. | &nbsp;&nbsp;&nbsp;34598 | &nbsp;&nbsp;$1526810 |
| JPMorgan Chase & Co. | &nbsp;&nbsp;&nbsp;10153 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2680392 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$4207202 |

---

------

Portfolio of Investments (unaudited) – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;&nbsp;**Value ($)** |
| Common Stocks – continued | Common Stocks – continued | Common Stocks – continued |
| Medical & Health Technology & Services – 3.3% | Medical & Health Technology & Services – 3.3% |  |
| McKesson Corp. | &nbsp;&nbsp;&nbsp;14091 | &nbsp;&nbsp;$10138615 |
| Ventas, Inc., REIT | &nbsp;&nbsp;&nbsp;27175 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1746809 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;$11885424 |
| Medical Equipment – 4.2% | Medical Equipment – 4.2% |  |
| Abbott Laboratories | &nbsp;&nbsp;&nbsp;30793 | &nbsp;&nbsp;$4113329 |
| Boston Scientific Corp. (a) | &nbsp;&nbsp;&nbsp;15275 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1607847 |
| Hologic, Inc. (a) | &nbsp;&nbsp;&nbsp;30784 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1913841 |
| Medtronic PLC | &nbsp;&nbsp;&nbsp;45200 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3750696 |
| STERIS PLC | &nbsp;&nbsp;&nbsp;14367 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3522932 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;$14908645 |
| Network & Telecom – 2.6% | Network & Telecom – 2.6% |  |
| Motorola Solutions, Inc. | &nbsp;&nbsp;&nbsp;21867 | &nbsp;&nbsp;$9083114 |
| Other Banks & Diversified Financials – 3.8% | Other Banks & Diversified Financials – 3.8% |  |
| Mastercard, Inc., "A" | &nbsp;&nbsp;&nbsp;&nbsp;5188 | &nbsp;&nbsp;$3038093 |
| Northern Trust Corp. | &nbsp;&nbsp;&nbsp;17316 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1848310 |
| Visa, Inc., "A" | &nbsp;&nbsp;&nbsp;23079 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8428220 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;$13314623 |
| Pharmaceuticals – 5.9% | Pharmaceuticals – 5.9% |  |
| AbbVie, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;9562 | &nbsp;&nbsp;$1779584 |
| Johnson & Johnson | &nbsp;&nbsp;&nbsp;69775 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10829778 |
| Merck & Co., Inc. | &nbsp;&nbsp;&nbsp;70064 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5383718 |
| Pfizer, Inc. | &nbsp;&nbsp;123444 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2899699 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;$20892779 |
| Pollution Control – 4.0% | Pollution Control – 4.0% |  |
| Republic Services, Inc. | &nbsp;&nbsp;&nbsp;27562 | &nbsp;&nbsp;$7091427 |
| Waste Connections, Inc. | &nbsp;&nbsp;&nbsp;23267 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4585693 |
| Waste Management, Inc. | &nbsp;&nbsp;&nbsp;10682 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2574041 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;$14251161 |
| Printing & Publishing – 0.4% | Printing & Publishing – 0.4% |  |
| Lamar Advertising Co., REIT | &nbsp;&nbsp;&nbsp;11729 | &nbsp;&nbsp;$1413814 |
| Railroad & Shipping – 0.4% | Railroad & Shipping – 0.4% |  |
| CSX Corp. | &nbsp;&nbsp;&nbsp;49984 | &nbsp;&nbsp;$1578994 |
| Real Estate – 1.8% | Real Estate – 1.8% |  |
| Essential Properties Realty Trust, REIT | &nbsp;&nbsp;&nbsp;48155 | &nbsp;&nbsp;$1565037 |
| Federal Realty Investment Trust, REIT | &nbsp;&nbsp;&nbsp;13733 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1311227 |
| NNN REIT, Inc. | &nbsp;&nbsp;&nbsp;38601 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1611978 |
| W.P. Carey, Inc., REIT | &nbsp;&nbsp;&nbsp;28704 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1801463 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6289705 |
| Real Estate - Storage – 0.5% | Real Estate - Storage – 0.5% |  |
| Public Storage, Inc., REIT | &nbsp;&nbsp;&nbsp;&nbsp;5929 | &nbsp;&nbsp;$1828563 |
| Restaurants – 1.7% | Restaurants – 1.7% |  |
| Aramark | &nbsp;&nbsp;&nbsp;38461 | &nbsp;&nbsp;$1557670 |
| McDonald's Corp. | &nbsp;&nbsp;&nbsp;14202 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4457298 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6014968 |

---

------

Portfolio of Investments (unaudited) – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;&nbsp;**Value ($)** |
| Common Stocks – continued | Common Stocks – continued | Common Stocks – continued |
| Specialty Chemicals – 1.7% | Specialty Chemicals – 1.7% |  |
| Corteva, Inc. | &nbsp;&nbsp;&nbsp;23951 | &nbsp;&nbsp;$1695731 |
| Ecolab, Inc. | &nbsp;&nbsp;&nbsp;10996 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2920757 |
| RPM International, Inc. | &nbsp;&nbsp;&nbsp;13653 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1554258 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6170746 |
| Specialty Stores – 4.2% | Specialty Stores – 4.2% |  |
| AutoZone, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;1680 | &nbsp;&nbsp;$6271507 |
| Home Depot, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;5640 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2077156 |
| O'Reilly Automotive, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;2414 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3301145 |
| Walmart Stores, Inc. | &nbsp;&nbsp;&nbsp;31478 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3107508 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;$14757316 |
| Telecom - Infrastructure – 0.7% | Telecom - Infrastructure – 0.7% |  |
| American Tower Corp., REIT | &nbsp;&nbsp;&nbsp;11035 | &nbsp;&nbsp;$2368663 |
| Telecom Services – 1.2% | Telecom Services – 1.2% |  |
| Comcast Corp., "A" | &nbsp;&nbsp;&nbsp;75234 | &nbsp;&nbsp;$2600839 |
| T-Mobile USA, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;7482 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1812141 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$4412980 |
| Trucking – 0.5% | Trucking – 0.5% |  |
| J.B. Hunt Transport Services, Inc. | &nbsp;&nbsp;&nbsp;12895 | &nbsp;&nbsp;$1790471 |
| Utilities - Electric Power – 6.3% | Utilities - Electric Power – 6.3% |  |
| Dominion Energy, Inc. | &nbsp;&nbsp;&nbsp;29194 | &nbsp;&nbsp;$1654424 |
| DTE Energy Co. | &nbsp;&nbsp;&nbsp;19513 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2666451 |
| Duke Energy Corp. | &nbsp;&nbsp;&nbsp;36289 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4271941 |
| Entergy Corp. | &nbsp;&nbsp;&nbsp;17304 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1441077 |
| Evergy, Inc. | &nbsp;&nbsp;&nbsp;67707 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4496422 |
| Exelon Corp. | &nbsp;&nbsp;&nbsp;90186 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3951951 |
| Xcel Energy, Inc. | &nbsp;&nbsp;&nbsp;52863 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3705696 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;$22187962 |
| **Total Common Stocks** |  | &nbsp;&nbsp;**$352518807** |
| Mutual Funds (h) – 0.1% | Mutual Funds (h) – 0.1% | Mutual Funds (h) – 0.1% |
| Money Market Funds – 0.1% | Money Market Funds – 0.1% |  |
| MFS Institutional Money Market Portfolio, 4.35% (v) | 369100 | &nbsp;&nbsp;&nbsp;$369100 |
| Other Assets, Less Liabilities – 0.5% |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1699758 |
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | &nbsp;&nbsp;&nbsp;**$354587665** |

---

(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 $369,100 and $352,518,807, respectively.

(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.

The following abbreviations are used in this report and are defined: <br> REIT Real Estate Investment Trust

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, 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. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Open-end investment companies are generally valued at net asset value per share.

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:

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| | | | | |
|:---|:---|:---|:---|:---|
| **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;$352518807 | &nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;$352518807 |
| Investment Companies | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;369100 | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;369100 |
| Total | &nbsp;&nbsp;&nbsp;$352887907 | &nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;$352887907 |

---

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;$917917 | &nbsp;&nbsp;$36626422 | &nbsp;&nbsp;$37174995 | &nbsp;&nbsp;$13 | &nbsp;&nbsp;$(257) | &nbsp;&nbsp;$369100 |

---

---

| | | |
|:---|:---|:---|
| **Affiliated Issuers** | &nbsp;&nbsp;**Dividend<br> Income** | &nbsp;&nbsp;**Capital Gain<br> Distributions** |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;$53113 | &nbsp;&nbsp;$— |

---

## 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 Low Volatility Equity Fund

- **b. EDGAR series identifier (if any):** S000042701

- **c. LEI of Series:** 549300X3ZVIZOWLC2P38

**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:** $354768375.82

**Total Liabilities:** $169213.27

**Net Assets:** $354599162.55

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000132015 | -1.98%               | -1.81%               | 3.10%                |
| Class ID C000132020 | -1.86%               | -1.69%               | 3.17%                |
| Class ID C000132021 | -1.88%               | -1.69%               | 3.17%                |
| Class ID C000132016 | -1.90%               | -1.69%               | 3.17%                |
| Class ID C000132013 | -1.85%               | -1.75%               | 3.12%                |
| Class ID C000132019 | -1.89%               | -1.74%               | 3.16%                |
| Class ID C000132018 | -1.94%               | -1.73%               | 3.10%                |
| Class ID C000132017 | -1.96%               | -1.80%               | 3.08%                |
| Class ID C000132014 | -1.94%               | -1.80%               | 3.08%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $8831230.58              | $-17076346.42                              |
| Month 2  | $2433951.86              | $-8781346.57                               |
| Month 3  | $4424751.81              | $6137191.35                                |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Honeywell International Inc              | Honeywell International Inc              | CUSIP: 438516106<br>LEI: ISRPG12PN4EIEOEMW547 | Long             | EC               | CORP              | US        |      8802 | NS      | $1995149.34   | 0.56%             |  |  |  | No            |                  1 | On Loan: No      |
| Equitable Holdings Inc                   | Equitable Holdings Inc                   | CUSIP: 29452E101<br>LEI: 549300FIBAKMNHPZ4009 | Long             | EC               | CORP              | US        |     27573 | NS      | $1457784.51   | 0.41%             |  |  |  | No            |                  1 | On Loan: No      |
| Assurant Inc                             | Assurant Inc                             | CUSIP: 04621X108<br>LEI: H3F39CAXWQRVWURFXL38 | Long             | EC               | CORP              | US        |     15118 | NS      | $3068651.64   | 0.87%             |  |  |  | No            |                  1 | On Loan: No      |
| Intuit Inc                               | Intuit Inc                               | CUSIP: 461202103<br>LEI: VI90HBPH7XSFMB9E4M29 | Long             | EC               | CORP              | US        |      7056 | NS      | $5316484.32   | 1.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Accenture PLC                            | Accenture PLC                            | CUSIP: 000000000<br>LEI: 5493000EWHDSR3MZWH98 | Long             | EC               | CORP              | IE        |     23129 | NS      | $7327729.78   | 2.07%             |  |  |  | No            |                  1 | On Loan: No      |
| AMETEK Inc                               | AMETEK Inc                               | CUSIP: 031100100<br>LEI: 549300WZDEF9KKE40E98 | Long             | EC               | CORP              | US        |     12381 | NS      | $2212979.94   | 0.62%             |  |  |  | No            |                  1 | On Loan: No      |
| Teledyne Technologies Inc                | Teledyne Technologies Inc                | CUSIP: 879360105<br>LEI: 549300VSMO9KYQWDND94 | Long             | EC               | CORP              | US        |     17382 | NS      | $8671184.52   | 2.45%             |  |  |  | No            |                  1 | On Loan: No      |
| Dominion Energy Inc                      | Dominion Energy Inc                      | CUSIP: 25746U109<br>LEI: ILUL7B6Z54MRYCF6H308 | Long             | EC               | CORP              | US        |     29302 | NS      | $1660544.34   | 0.47%             |  |  |  | No            |                  1 | On Loan: No      |
| Mondelez International Inc               | Mondelez International Inc               | CUSIP: 609207105<br>LEI: 549300DV9GIB88LZ5P30 | Long             | EC               | CORP              | US        |     64082 | NS      | $4324894.18   | 1.22%             |  |  |  | No            |                  1 | On Loan: No      |
| Johnson & Johnson                        | Johnson & Johnson                        | CUSIP: 478160104<br>LEI: 549300G0CFPGEF6X2043 | Long             | EC               | CORP              | US        |     70033 | NS      | $10869821.93  | 3.07%             |  |  |  | No            |                  1 | On Loan: No      |
| McDonald's Corp                          | McDonald's Corp                          | CUSIP: 580135101<br>LEI: UE2136O97NLB5BYP9H04 | Long             | EC               | CORP              | US        |     14255 | NS      | $4473931.75   | 1.26%             |  |  |  | No            |                  1 | On Loan: No      |
| Essential Properties Realty Trust Inc    | Essential Properties Realty Trust Inc    | CUSIP: 29670E107<br>LEI: 2549009LXQLVYCGLZO50 | Long             | EC               | CORP              | US        |     48333 | NS      | $1570822.50   | 0.44%             |  |  |  | No            |                  1 | On Loan: No      |
| Amphenol Corp                            | Amphenol Corp                            | CUSIP: 032095101<br>LEI: 549300D3L3G0R4U4VT04 | Long             | EC               | CORP              | US        |     88707 | NS      | $7977420.51   | 2.25%             |  |  |  | No            |                  1 | On Loan: No      |
| Northern Trust Corp                      | Northern Trust Corp                      | CUSIP: 665859104<br>LEI: 549300GLF98S992BC502 | Long             | EC               | CORP              | US        |     17380 | NS      | $1855141.20   | 0.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Hilton Worldwide Holdings Inc            | Hilton Worldwide Holdings Inc            | CUSIP: 43300A203<br>LEI: 549300HVGPK36ICB0B89 | Long             | EC               | CORP              | US        |      9688 | NS      | $2406886.72   | 0.68%             |  |  |  | No            |                  1 | On Loan: No      |
| WP Carey Inc                             | WP Carey Inc                             | CUSIP: 92936U109<br>LEI: 54930042CRNE713E3Q67 | Long             | EC               | CORP              | US        |     28810 | NS      | $1808115.60   | 0.51%             |  |  |  | No            |                  1 | On Loan: No      |
| General Mills Inc                        | General Mills Inc                        | CUSIP: 370334104<br>LEI: 2TGYMUGI08PO8X8L6150 | Long             | EC               | CORP              | US        |    140628 | NS      | $7630475.28   | 2.15%             |  |  |  | No            |                  1 | On Loan: No      |
| Reinsurance Group of America Inc         | Reinsurance Group of America Inc         | CUSIP: 759351604<br>LEI: LORM1GNEU1DKEW527V90 | Long             | EC               | CORP              | US        |      8469 | NS      | $1721663.01   | 0.49%             |  |  |  | No            |                  1 | On Loan: No      |
| AbbVie Inc                               | AbbVie Inc                               | CUSIP: 00287Y109<br>LEI: FR5LCKFTG8054YNNRU85 | Long             | EC               | CORP              | US        |      9597 | NS      | $1786097.67   | 0.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Ventas Inc                               | Ventas Inc                               | CUSIP: 92276F100<br>LEI: ORQTRC074CWLT3DKHT41 | Long             | EC               | CORP              | US        |     27276 | NS      | $1753301.28   | 0.49%             |  |  |  | No            |                  1 | On Loan: No      |
| Everest Group Ltd                        | Everest Group Ltd                        | CUSIP: 000000000<br>LEI: 549300N24XF2VV0B3570 | Long             | EC               | CORP              | BM        |     14904 | NS      | $5174519.76   | 1.46%             |  |  |  | No            |                  1 | On Loan: No      |
| Cognizant Technology Solutions Corp      | Cognizant Technology Solutions Corp      | CUSIP: 192446102<br>LEI: 5493006IEVQEFQO40L83 | Long             | EC               | CORP              | US        |    109559 | NS      | $8873183.41   | 2.50%             |  |  |  | No            |                  1 | On Loan: No      |
| EOG Resources Inc                        | EOG Resources Inc                        | CUSIP: 26875P101<br>LEI: XWTZDRYZPBUHIQBKDB46 | Long             | EC               | CORP              | US        |     24377 | NS      | $2646610.89   | 0.75%             |  |  |  | No            |                  1 | On Loan: No      |
| Aramark                                  | Aramark                                  | CUSIP: 03852U106<br>LEI: 549300MR6PG2DWZUIL39 | Long             | EC               | CORP              | US        |     38603 | NS      | $1563421.50   | 0.44%             |  |  |  | No            |                  1 | On Loan: No      |
| Chubb Ltd                                | Chubb Ltd                                | CUSIP: 000000000<br>LEI: E0JAN6VLUDI1HITHT809 | Long             | EC               | CORP              | CH        |     18174 | NS      | $5401312.80   | 1.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Omnicom Group Inc                        | Omnicom Group Inc                        | CUSIP: 681919106<br>LEI: HKUPACFHSSASQK8HLS17 | Long             | EC               | CORP              | US        |     51703 | NS      | $3797068.32   | 1.07%             |  |  |  | No            |                  1 | On Loan: No      |
| General Dynamics Corp                    | General Dynamics Corp                    | CUSIP: 369550108<br>LEI: 9C1X8XOOTYY2FNYTVH06 | Long             | EC               | CORP              | US        |      6383 | NS      | $1777601.67   | 0.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Xcel Energy Inc                          | Xcel Energy Inc                          | CUSIP: 98389B100<br>LEI: LGJNMI9GH8XIDG5RCM61 | Long             | EC               | CORP              | US        |     53059 | NS      | $3719435.90   | 1.05%             |  |  |  | No            |                  1 | On Loan: No      |
| Comcast Corp                             | Comcast Corp                             | CUSIP: 20030N101<br>LEI: 51M0QTTNCGUN7KFCFZ59 | Long             | EC               | CORP              | US        |     75512 | NS      | $2610449.84   | 0.74%             |  |  |  | No            |                  1 | On Loan: No      |
| Exelon Corp                              | Exelon Corp                              | CUSIP: 30161N101<br>LEI: 3SOUA6IRML7435B56G12 | Long             | EC               | CORP              | US        |     90520 | NS      | $3966586.40   | 1.12%             |  |  |  | No            |                  1 | On Loan: No      |
| Lear Corp                                | Lear Corp                                | CUSIP: 521865204<br>LEI: 549300UPNBTXA1SYTQ33 | Long             | EC               | CORP              | US        |     17930 | NS      | $1621230.60   | 0.46%             |  |  |  | No            |                  1 | On Loan: No      |
| Medtronic PLC                            | Medtronic PLC                            | CUSIP: 000000000<br>LEI: 549300GX3ZBSQWUXY261 | Long             | EC               | CORP              | IE        |     45367 | NS      | $3764553.66   | 1.06%             |  |  |  | No            |                  1 | On Loan: No      |
| Corteva Inc                              | Corteva Inc                              | CUSIP: 22052L104<br>LEI: 549300WZN9I2QKLS0O94 | Long             | EC               | CORP              | US        |     24040 | NS      | $1702032.00   | 0.48%             |  |  |  | No            |                  1 | On Loan: No      |
| PepsiCo Inc                              | PepsiCo Inc                              | CUSIP: 713448108<br>LEI: FJSUNZKFNQ5YPJ5OT455 | Long             | EC               | CORP              | US        |     34104 | NS      | $4482970.80   | 1.26%             |  |  |  | No            |                  1 | On Loan: No      |
| Alphabet Inc                             | Alphabet Inc                             | CUSIP: 02079K305<br>LEI: 5493006MHB84DD0ZWV18 | Long             | EC               | CORP              | US        |     41523 | NS      | $7131160.02   | 2.01%             |  |  |  | No            |                  1 | On Loan: No      |
| Visa Inc                                 | Visa Inc                                 | CUSIP: 92826C839<br>LEI: 549300JZ4OKEHW3DPJ59 | Long             | EC               | CORP              | US        |     23164 | NS      | $8459261.16   | 2.39%             |  |  |  | No            |                  1 | On Loan: No      |
| Eastman Chemical Co                      | Eastman Chemical Co                      | CUSIP: 277432100<br>LEI: FDPVHDGJ1IQZFK9KH630 | Long             | EC               | CORP              | US        |     23212 | NS      | $1819124.44   | 0.51%             |  |  |  | No            |                  1 | On Loan: No      |
| Boston Scientific Corp                   | Boston Scientific Corp                   | CUSIP: 101137107<br>LEI: Y6ZDD9FP4P8JSSJMW954 | Long             | EC               | CORP              | US        |     15332 | NS      | $1613846.32   | 0.46%             |  |  |  | No            |                  1 | On Loan: No      |
| NXP Semiconductors NV                    | NXP Semiconductors NV                    | CUSIP: 000000000<br>LEI: 724500M9BY5293JDF951 | Long             | EC               | CORP              | NL        |     12101 | NS      | $2312864.13   | 0.65%             |  |  |  | No            |                  1 | On Loan: No      |
| Leidos Holdings Inc                      | Leidos Holdings Inc                      | CUSIP: 525327102<br>LEI: 549300IUTGTP6EJP8124 | Long             | EC               | CORP              | US        |     10923 | NS      | $1622283.96   | 0.46%             |  |  |  | No            |                  1 | On Loan: No      |
| Biogen Inc                               | Biogen Inc                               | CUSIP: 09062X103<br>LEI: W8J5WZB5IY3K0NDQT671 | Long             | EC               | CORP              | US        |     11445 | NS      | $1485446.55   | 0.42%             |  |  |  | No            |                  1 | On Loan: No      |
| Fiserv Inc                               | Fiserv Inc                               | CUSIP: 337738108<br>LEI: GI7UBEJLXYLGR2C7GV83 | Long             | EC               | CORP              | US        |     16297 | NS      | $2652988.63   | 0.75%             |  |  |  | No            |                  1 | On Loan: No      |
| Procter & Gamble Co/The                  | Procter & Gamble Co/The                  | CUSIP: 742718109<br>LEI: 2572IBTT8CCZW6AU4141 | Long             | EC               | CORP              | US        |     40208 | NS      | $6830937.12   | 1.93%             |  |  |  | No            |                  1 | On Loan: No      |
| Albertsons Cos Inc                       | Albertsons Cos Inc                       | CUSIP: 013091103<br>LEI: 549300YKWOC0AOR16R51 | Long             | EC               | CORP              | US        |     84445 | NS      | $1877212.35   | 0.53%             |  |  |  | No            |                  1 | On Loan: No      |
| Tyler Technologies Inc                   | Tyler Technologies Inc                   | CUSIP: 902252105<br>LEI: 25490040SMU4Z8LBCW70 | Long             | EC               | CORP              | US        |     11035 | NS      | $6367084.65   | 1.80%             |  |  |  | No            |                  1 | On Loan: No      |
| Microsoft Corp                           | Microsoft Corp                           | CUSIP: 594918104<br>LEI: INR2EJN1ERAN0W5ZP974 | Long             | EC               | CORP              | US        |     17958 | NS      | $8267144.88   | 2.33%             |  |  |  | No            |                  1 | On Loan: No      |
| American Tower Corp                      | American Tower Corp                      | CUSIP: 03027X100<br>LEI: 5493006ORUSIL88JOE18 | Long             | EC               | CORP              | US        |     11076 | NS      | $2377463.40   | 0.67%             |  |  |  | No            |                  1 | On Loan: No      |
| Federal Realty Investment Trust          | Federal Realty Investment Trust          | CUSIP: 313745101<br>LEI: 549300FHEI1SLVZ0RB48 | Long             | EC               | CORP              | US        |     13784 | NS      | $1316096.32   | 0.37%             |  |  |  | No            |                  1 | On Loan: No      |
| Ryman Hospitality Properties Inc         | Ryman Hospitality Properties Inc         | CUSIP: 78377T107<br>LEI: 529900GCCWW9SRMPJR11 | Long             | EC               | CORP              | US        |     17134 | NS      | $1663882.74   | 0.47%             |  |  |  | No            |                  1 | On Loan: No      |
| Waste Management Inc                     | Waste Management Inc                     | CUSIP: 94106L109<br>LEI: 549300YX8JIID70NFS41 | Long             | EC               | CORP              | US        |     10722 | NS      | $2583680.34   | 0.73%             |  |  |  | No            |                  1 | On Loan: No      |
| Entergy Corp                             | Entergy Corp                             | CUSIP: 29364G103<br>LEI: 4XM3TW50JULSLG8BNC79 | Long             | EC               | CORP              | US        |     17368 | NS      | $1446407.04   | 0.41%             |  |  |  | No            |                  1 | On Loan: No      |
| Cigna Group/The                          | Cigna Group/The                          | CUSIP: 125523100<br>LEI: 549300VIWYMSIGT1U456 | Long             | EC               | CORP              | US        |     11989 | NS      | $3796196.96   | 1.07%             |  |  |  | No            |                  1 | On Loan: No      |
| Lamar Advertising Co                     | Lamar Advertising Co                     | CUSIP: 512816109<br>LEI: 529900Y8WW4MKVPTB543 | Long             | EC               | CORP              | US        |     11772 | NS      | $1418996.88   | 0.40%             |  |  |  | No            |                  1 | On Loan: No      |
| O'Reilly Automotive Inc                  | O'Reilly Automotive Inc                  | CUSIP: 67103H107<br>LEI: 549300K2RLMQL149Q332 | Long             | EC               | CORP              | US        |      2423 | NS      | $3313452.50   | 0.93%             |  |  |  | No            |                  1 | On Loan: No      |
| Principal Financial Group Inc            | Principal Financial Group Inc            | CUSIP: 74251V102<br>LEI: CUMYEZJOAF02RYZ1JJ85 | Long             | EC               | CORP              | US        |     23693 | NS      | $1845447.77   | 0.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Walmart Inc                              | Walmart Inc                              | CUSIP: 931142103<br>LEI: Y87794H0US1R65VBXU25 | Long             | EC               | CORP              | US        |     31595 | NS      | $3119058.40   | 0.88%             |  |  |  | No            |                  1 | On Loan: No      |
| Public Storage                           | Public Storage                           | CUSIP: 74460D109<br>LEI: 254900GLQZAD4N7N5Q19 | Long             | EC               | CORP              | US        |      5951 | NS      | $1835347.91   | 0.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Corning Inc                              | Corning Inc                              | CUSIP: 219350105<br>LEI: 549300X2937PB0CJ7I56 | Long             | EC               | CORP              | US        |    121539 | NS      | $6027119.01   | 1.70%             |  |  |  | No            |                  1 | On Loan: No      |
| Axis Capital Holdings Ltd                | Axis Capital Holdings Ltd                | CUSIP: 000000000<br>LEI: 635400VD2NQBYAHMEM55 | Long             | EC               | CORP              | BM        |     15604 | NS      | $1619695.20   | 0.46%             |  |  |  | No            |                  1 | On Loan: No      |
| Amentum Holdings Inc                     | Amentum Holdings Inc                     | CUSIP: 023939101<br>LEI: 2549009FJIBLW40CU216 | Long             | EC               | CORP              | US        |       745 | NS      | $15387.65     | 0.00%             |  |  |  | No            |                  1 | On Loan: No      |
| Ecolab Inc                               | Ecolab Inc                               | CUSIP: 278865100<br>LEI: 82DYEISM090VG8LTLS26 | Long             | EC               | CORP              | US        |     11037 | NS      | $2931647.94   | 0.83%             |  |  |  | No            |                  1 | On Loan: No      |
| Mastercard Inc                           | Mastercard Inc                           | CUSIP: 57636Q104<br>LEI: AR5L2ODV9HN37376R084 | Long             | EC               | CORP              | US        |      5207 | NS      | $3049219.20   | 0.86%             |  |  |  | No            |                  1 | On Loan: No      |
| Republic Services Inc                    | Republic Services Inc                    | CUSIP: 760759100<br>LEI: NKNQHM6BLECKVOQP7O46 | Long             | EC               | CORP              | US        |     27664 | NS      | $7117670.56   | 2.01%             |  |  |  | No            |                  1 | On Loan: No      |
| Bank of America Corp                     | Bank of America Corp                     | CUSIP: 060505104<br>LEI: 9DJT3UXIJIZJI4WXO774 | Long             | EC               | CORP              | US        |     34726 | NS      | $1532458.38   | 0.43%             |  |  |  | No            |                  1 | On Loan: No      |
| Essex Property Trust Inc                 | Essex Property Trust Inc                 | CUSIP: 297178105<br>LEI: 549300TR2H2VEFX0NC60 | Long             | EC               | CORP              | US        |      5072 | NS      | $1439940.80   | 0.41%             |  |  |  | No            |                  1 | On Loan: No      |
| Home Depot Inc/The                       | Home Depot Inc/The                       | CUSIP: 437076102<br>LEI: QEKMOTMBBKA8I816DO57 | Long             | EC               | CORP              | US        |      5661 | NS      | $2084889.69   | 0.59%             |  |  |  | No            |                  1 | On Loan: No      |
| Evergy Inc                               | Evergy Inc                               | CUSIP: 30034W106<br>LEI: 549300PGTHDQY6PSUI61 | Long             | EC               | CORP              | US        |     67958 | NS      | $4513090.78   | 1.27%             |  |  |  | No            |                  1 | On Loan: No      |
| Jacobs Solutions Inc                     | Jacobs Solutions Inc                     | CUSIP: 46982L108<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     12186 | NS      | $1539091.80   | 0.43%             |  |  |  | No            |                  1 | On Loan: No      |
| Abbott Laboratories                      | Abbott Laboratories                      | CUSIP: 002824100<br>LEI: HQD377W2YR662HK5JX27 | Long             | EC               | CORP              | US        |     30907 | NS      | $4128557.06   | 1.16%             |  |  |  | No            |                  1 | On Loan: No      |
| CSX Corp                                 | CSX Corp                                 | CUSIP: 126408103<br>LEI: 549300JVQR4N1MMP3Q88 | Long             | EC               | CORP              | US        |     50169 | NS      | $1584838.71   | 0.45%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Institutional Money Market Portfolio | MFS Institutional Money Market Portfolio | CUSIP: 55291X109<br>LEI: 5L2W638H85N8T1136O07 | Long             | EC               | RF                | US        |    364775 | NS      | $364774.92    | 0.10%             |  |  |  | No            |                  1 | On Loan: No      |
| AvalonBay Communities Inc                | AvalonBay Communities Inc                | CUSIP: 053484101<br>LEI: K9G90K85RBWD2LAGQX17 | Long             | EC               | CORP              | US        |      7988 | NS      | $1651678.76   | 0.47%             |  |  |  | No            |                  1 | On Loan: No      |
| Analog Devices Inc                       | Analog Devices Inc                       | CUSIP: 032654105<br>LEI: GYVOE5EZ4GDAVTU4CQ61 | Long             | EC               | CORP              | US        |     27987 | NS      | $5988658.26   | 1.69%             |  |  |  | No            |                  1 | On Loan: No      |
| MetLife Inc                              | MetLife Inc                              | CUSIP: 59156R108<br>LEI: C4BXATY60WC6XEOZDX54 | Long             | EC               | CORP              | US        |     23864 | NS      | $1875233.12   | 0.53%             |  |  |  | No            |                  1 | On Loan: No      |
| Duke Energy Corp                         | Duke Energy Corp                         | CUSIP: 26441C204<br>LEI: I1BZKREC126H0VB1BL91 | Long             | EC               | CORP              | US        |     36423 | NS      | $4287715.56   | 1.21%             |  |  |  | No            |                  1 | On Loan: No      |
| Pfizer Inc                               | Pfizer Inc                               | CUSIP: 717081103<br>LEI: 765LHXWGK1KXCLTFYQ30 | Long             | EC               | CORP              | US        |    123901 | NS      | $2910434.49   | 0.82%             |  |  |  | No            |                  1 | On Loan: No      |
| Waste Connections Inc                    | Waste Connections Inc                    | CUSIP: 94106B101<br>LEI: 549300HDLRTPBQU69P29 | Long             | EC               | CORP              | CA        |     23353 | NS      | $4602642.77   | 1.30%             |  |  |  | No            |                  1 | On Loan: No      |
| Voya Financial Inc                       | Voya Financial Inc                       | CUSIP: 929089100<br>LEI: 549300T065Z4KJ686G75 | Long             | EC               | CORP              | US        |     23078 | NS      | $1535148.56   | 0.43%             |  |  |  | No            |                  1 | On Loan: No      |
| TE Connectivity PLC                      | TE Connectivity PLC                      | CUSIP: 000000000<br>LEI: 6367003TB6K484NFHE54 | Long             | EC               | CORP              | IE        |     60421 | NS      | $9671589.47   | 2.73%             |  |  |  | No            |                  1 | On Loan: No      |
| JB Hunt Transport Services Inc           | JB Hunt Transport Services Inc           | CUSIP: 445658107<br>LEI: 549300XCD1MPI1C5GK90 | Long             | EC               | CORP              | US        |     12943 | NS      | $1797135.55   | 0.51%             |  |  |  | No            |                  1 | On Loan: No      |
| ACI Worldwide Inc                        | ACI Worldwide Inc                        | CUSIP: 004498101<br>LEI: 5493003BPVMZUJ6F5C02 | Long             | EC               | CORP              | US        |     27129 | NS      | $1254987.54   | 0.35%             |  |  |  | No            |                  1 | On Loan: No      |
| AutoZone Inc                             | AutoZone Inc                             | CUSIP: 053332102<br>LEI: GA3JGKJ41LJKXDN23E90 | Long             | EC               | CORP              | US        |      1686 | NS      | $6293905.44   | 1.77%             |  |  |  | No            |                  1 | On Loan: No      |
| Ameriprise Financial Inc                 | Ameriprise Financial Inc                 | CUSIP: 03076C106<br>LEI: 6ZLKQF7QB6JAEKQS5388 | Long             | EC               | CORP              | US        |      3636 | NS      | $1851596.64   | 0.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Hartford Insurance Group Inc/The         | Hartford Insurance Group Inc/The         | CUSIP: 416515104<br>LEI: IU7C3FTM7Y3BQM112U94 | Long             | EC               | CORP              | US        |     25636 | NS      | $3328578.24   | 0.94%             |  |  |  | No            |                  1 | On Loan: No      |
| McKesson Corp                            | McKesson Corp                            | CUSIP: 58155Q103<br>LEI: 549300WZWOM80UCFSF54 | Long             | EC               | CORP              | US        |     14143 | NS      | $10176029.93  | 2.87%             |  |  |  | No            |                  1 | On Loan: No      |
| CACI International Inc                   | CACI International Inc                   | CUSIP: 127190304<br>LEI: SYRPI2D1O9WRTS2WX210 | Long             | EC               | CORP              | US        |      4257 | NS      | $1821996.00   | 0.51%             |  |  |  | No            |                  1 | On Loan: No      |
| Verisk Analytics Inc                     | Verisk Analytics Inc                     | CUSIP: 92345Y106<br>LEI: 549300I1YSWNIRKBWP67 | Long             | EC               | CORP              | US        |      5858 | NS      | $1840232.12   | 0.52%             |  |  |  | No            |                  1 | On Loan: No      |
| NNN REIT Inc                             | NNN REIT Inc                             | CUSIP: 637417106<br>LEI: 5493008JKH5SOTI0JS97 | Long             | EC               | CORP              | US        |     38744 | NS      | $1617949.44   | 0.46%             |  |  |  | No            |                  1 | On Loan: No      |
| RPM International Inc                    | RPM International Inc                    | CUSIP: 749685103<br>LEI: 549300TJCKW4BRXPJ474 | Long             | EC               | CORP              | US        |     13704 | NS      | $1560063.36   | 0.44%             |  |  |  | No            |                  1 | On Loan: No      |
| Cboe Global Markets Inc                  | Cboe Global Markets Inc                  | CUSIP: 12503M108<br>LEI: 529900RLNSGA90UPEH54 | Long             | EC               | CORP              | US        |     11552 | NS      | $2646794.24   | 0.75%             |  |  |  | No            |                  1 | On Loan: No      |
| T-Mobile US Inc                          | T-Mobile US Inc                          | CUSIP: 872590104<br>LEI: 549300QHIJYOHPACPG31 | Long             | EC               | CORP              | US        |      7510 | NS      | $1818922.00   | 0.51%             |  |  |  | No            |                  1 | On Loan: No      |
| Kimberly-Clark Corp                      | Kimberly-Clark Corp                      | CUSIP: 494368103<br>LEI: MP3J6QPYPGN75NVW2S34 | Long             | EC               | CORP              | US        |     13196 | NS      | $1897056.96   | 0.53%             |  |  |  | No            |                  1 | On Loan: No      |
| Merck & Co Inc                           | Merck & Co Inc                           | CUSIP: 58933Y105<br>LEI: 4YV9Y5M8S0BRK1RP0397 | Long             | EC               | CORP              | US        |     70323 | NS      | $5403619.32   | 1.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Expand Energy Corp                       | Expand Energy Corp                       | CUSIP: 165167735<br>LEI: X2MT1W32SPAZ9WSKLE78 | Long             | EC               | CORP              | US        |     14359 | NS      | $1667510.67   | 0.47%             |  |  |  | No            |                  1 | On Loan: No      |
| Colgate-Palmolive Co                     | Colgate-Palmolive Co                     | CUSIP: 194162103<br>LEI: YMEGZFW4SBUSS5BQXF88 | Long             | EC               | CORP              | US        |     39841 | NS      | $3702822.54   | 1.04%             |  |  |  | No            |                  1 | On Loan: No      |
| STERIS PLC                               | STERIS PLC                               | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | IE        |     14420 | NS      | $3535928.20   | 1.00%             |  |  |  | No            |                  1 | On Loan: No      |
| JPMorgan Chase & Co                      | JPMorgan Chase & Co                      | CUSIP: 46625H100<br>LEI: 8I5DZWZKVSZI1NUHU748 | Long             | EC               | CORP              | US        |     10191 | NS      | $2690424.00   | 0.76%             |  |  |  | No            |                  1 | On Loan: No      |
| Westinghouse Air Brake Technologies Corp | Westinghouse Air Brake Technologies Corp | CUSIP: 929740108<br>LEI: 06BTX5UWZD0GQ5N5Y745 | Long             | EC               | CORP              | US        |      8296 | NS      | $1678446.72   | 0.47%             |  |  |  | No            |                  1 | On Loan: No      |
| DTE Energy Co                            | DTE Energy Co                            | CUSIP: 233331107<br>LEI: 549300IX8SD6XXD71I78 | Long             | EC               | CORP              | US        |     19585 | NS      | $2676290.25   | 0.75%             |  |  |  | No            |                  1 | On Loan: No      |
| Motorola Solutions Inc                   | Motorola Solutions Inc                   | CUSIP: 620076307<br>LEI: 6S552MUG6KGJVEBSEC55 | Long             | EC               | CORP              | US        |     21948 | NS      | $9116760.24   | 2.57%             |  |  |  | No            |                  1 | On Loan: No      |
| Hologic Inc                              | Hologic Inc                              | CUSIP: 436440101<br>LEI: 549300DYP6F5ZJL0LB74 | Long             | EC               | CORP              | US        |     30898 | NS      | $1920928.66   | 0.54%             |  |  |  | No            |                  1 | On Loan: No      |
| Hanover Insurance Group Inc/The          | Hanover Insurance Group Inc/The          | CUSIP: 410867105<br>LEI: JJYR6MFKFF6CF8DBZ078 | Long             | EC               | CORP              | US        |     11628 | NS      | $2046295.44   | 0.58%             |  |  |  | No            |                  1 | On Loan: No      |
| Reynolds Consumer Products Inc           | Reynolds Consumer Products Inc           | CUSIP: 76171L106<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     74419 | NS      | $1643171.52   | 0.46%             |  |  |  | No            |                  1 | On Loan: No      |
| American International Group Inc         | American International Group Inc         | CUSIP: 026874784<br>LEI: ODVCVCQG2BP6VHV36M30 | Long             | EC               | CORP              | US        |     18157 | NS      | $1536808.48   | 0.43%             |  |  |  | No            |                  1 | On Loan: No      |
| Eaton Corp PLC                           | Eaton Corp PLC                           | CUSIP: 000000000<br>LEI: 549300VDIGTMXUNT7H71 | Long             | EC               | CORP              | IE        |      6393 | NS      | $2047038.60   | 0.58%             |  |  |  | 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