# EDGAR Filing Document

**Accession Number:** 0000918571
**File Stem:** 0001410368-25-028915
**Filing Date:** 2025-11
**Character Count:** 56515
**Document Hash:** 61d4acc048f5c8a25413f0ca74c94daf
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001410368-25-028915.hdr.sgml**: 20251124

**ACCESSION NUMBER**: 0001410368-25-028915

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 4

**CONFORMED PERIOD OF REPORT**: 20250930

**FILED AS OF DATE**: 20251124

**DATE AS OF CHANGE**: 20251124

**PERIOD START**: 20251231

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MFS VARIABLE INSURANCE TRUST
- **CENTRAL INDEX KEY:** 0000918571

**ORGANIZATION NAME:**
- **EIN:** 043226600
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-08326
- **FILM NUMBER:** 251509799

**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

## Series and Classes Contracts Data

### MFS Research Series (Series ID: S000002668)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007306 | Initial Class |  |
| C000007307 | Service Class |  |

## Nport-Ex

VFR-Q3

![](imgd0f951e11.gif)

**Quarterly Report**

September 30, 2025

MFS<sup>®</sup> Research Series

![](img0c9ca26a2.gif)

MFS<sup>®</sup> Variable Insurance Trust

------

**Portfolio of Investments**

9/30/25 (unaudited)

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

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

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Common Stocks – 99.8%  | Common Stocks – 99.8%  | Common Stocks – 99.8%  |
| Aerospace & Defense – 3.0% | Aerospace & Defense – 3.0% |  |
| General Dynamics Corp. | 7978 | &nbsp;&nbsp;&nbsp; $2720498 |
| Howmet Aerospace, Inc. | 16050 | &nbsp;&nbsp;&nbsp; 3149492 |
| RTX Corp. | 32580 | &nbsp;&nbsp;&nbsp; 5451611 |
|  |  | &nbsp;&nbsp;&nbsp; $11321601 |
| Automotive – 0.6% | Automotive – 0.6% |  |
| Aptiv PLC (a)  | 26081 | &nbsp;&nbsp;&nbsp; $2248704 |
| Broadcasting – 2.0% | Broadcasting – 2.0% |  |
| Omnicom Group, Inc. | 39467 | &nbsp;&nbsp;&nbsp; $3217744 |
| Spotify Technology S.A. (a) | 6170 | &nbsp;&nbsp;&nbsp; 4306660 |
|  |  | &nbsp;&nbsp;&nbsp; $7524404 |
| Brokerage & Asset Managers – 2.4% | Brokerage & Asset Managers – 2.4% |  |
| Charles Schwab Corp. | 39842 | &nbsp;&nbsp;&nbsp; $3803716 |
| CME Group, Inc. | 13064 | &nbsp;&nbsp;&nbsp; 3529762 |
| KKR & Co., Inc. | 14641 | &nbsp;&nbsp;&nbsp; 1902598 |
|  |  | &nbsp;&nbsp;&nbsp; $9236076 |
| Business Services – 2.1% | Business Services – 2.1% |  |
| Accenture PLC, "A" | 15603 | &nbsp;&nbsp;&nbsp; $3847700 |
| Cognizant Technology Solutions Corp., "A" | 24567 | &nbsp;&nbsp;&nbsp; 1647709 |
| TransUnion | 29839 | &nbsp;&nbsp;&nbsp; 2499911 |
|  |  | &nbsp;&nbsp;&nbsp; $7995320 |
| Computer Software – 13.3% | Computer Software – 13.3% |  |
| Atlassian Corp. (a) | 11783 | &nbsp;&nbsp;&nbsp; $1881745 |
| Autodesk, Inc. (a) | 7096 | &nbsp;&nbsp;&nbsp; 2254186 |
| Cadence Design Systems, Inc. (a) | 10821 | &nbsp;&nbsp;&nbsp; 3800985 |
| Constellation Software, Inc. | 756 | &nbsp;&nbsp;&nbsp; 2052276 |
| Microsoft Corp. (s) | 61903 | &nbsp;&nbsp;&nbsp; 32062659 |
| Okta, Inc. (a) | 27021 | &nbsp;&nbsp;&nbsp; 2477826 |
| Salesforce, Inc. | 15651 | &nbsp;&nbsp;&nbsp; 3709287 |
| Tyler Technologies, Inc. (a) | 4644 | &nbsp;&nbsp;&nbsp; 2429555 |
|  |  | &nbsp;&nbsp;&nbsp; $50668519 |
| Computer Software - Systems – 6.7% | Computer Software - Systems – 6.7% |  |
| Apple, Inc. | 87523 | &nbsp;&nbsp;&nbsp; $22285982 |
| Arista Networks, Inc. (a) | 22523 | &nbsp;&nbsp;&nbsp; 3281826 |
|  |  | &nbsp;&nbsp;&nbsp; $25567808 |
| Construction – 2.3% | Construction – 2.3% |  |
| CRH PLC | 28589 | &nbsp;&nbsp;&nbsp; $3427821 |
| Ferguson Enterprises, Inc. | 7930 | &nbsp;&nbsp;&nbsp; 1780919 |
| Pulte Homes, Inc. | 11262 | &nbsp;&nbsp;&nbsp; 1488048 |
| Sherwin-Williams Co. | 5694 | &nbsp;&nbsp;&nbsp; 1971605 |
|  |  | &nbsp;&nbsp;&nbsp; $8668393 |
| Consumer Products – 1.1% | Consumer Products – 1.1% |  |
| Colgate-Palmolive Co. | 23041 | &nbsp;&nbsp;&nbsp; $1841898 |
| Estée Lauder Cos., Inc., "A" | 11744 | &nbsp;&nbsp;&nbsp; 1034881 |
| Kenvue, Inc. | 80411 | &nbsp;&nbsp;&nbsp; 1305070 |
|  |  | &nbsp;&nbsp;&nbsp; $4181849 |
| Consumer Services – 0.8% | Consumer Services – 0.8% |  |
| Booking Holdings, Inc.  | 572 | &nbsp;&nbsp;&nbsp; $3088382 |

---

------

*Portfolio of Investments (unaudited) – continued*

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Common Stocks – continued  | Common Stocks – continued  | Common Stocks – continued  |
| Electrical Equipment – 2.3% | Electrical Equipment – 2.3% |  |
| Amphenol Corp., "A" | 18223 | &nbsp;&nbsp;&nbsp; $2255096 |
| Eaton Corp. PLC | 8650 | &nbsp;&nbsp;&nbsp; 3237263 |
| Emerson Electric Co. | 24455 | &nbsp;&nbsp;&nbsp; 3208007 |
|  |  | &nbsp;&nbsp;&nbsp; $8700366 |
| Electronics – 12.5% | Electronics – 12.5% |  |
| Broadcom, Inc. | 39428 | &nbsp;&nbsp;&nbsp; $13007692 |
| Lam Research Corp. | 35060 | &nbsp;&nbsp;&nbsp; 4694534 |
| NVIDIA Corp. | 149978 | &nbsp;&nbsp;&nbsp; 27982895 |
| NXP Semiconductors N.V. | 8803 | &nbsp;&nbsp;&nbsp; 2004707 |
|  |  | &nbsp;&nbsp;&nbsp; $47689828 |
| Energy - Independent – 1.2% | Energy - Independent – 1.2% |  |
| ConocoPhillips | 32601 | &nbsp;&nbsp;&nbsp; $3083728 |
| Valero Energy Corp. | 8338 | &nbsp;&nbsp;&nbsp; 1419628 |
|  |  | &nbsp;&nbsp;&nbsp; $4503356 |
| Energy - Integrated – 1.4% | Energy - Integrated – 1.4% |  |
| Chevron Corp. | 8215 | &nbsp;&nbsp;&nbsp; $1275707 |
| Exxon Mobil Corp. | 35506 | &nbsp;&nbsp;&nbsp; 4003302 |
|  |  | &nbsp;&nbsp;&nbsp; $5279009 |
| Food & Beverages – 1.2% | Food & Beverages – 1.2% |  |
| Mondelez International, Inc. | 25633 | &nbsp;&nbsp;&nbsp; $1601294 |
| PepsiCo, Inc. | 19839 | &nbsp;&nbsp;&nbsp; 2786189 |
|  |  | &nbsp;&nbsp;&nbsp; $4387483 |
| Gaming & Lodging – 0.9% | Gaming & Lodging – 0.9% |  |
| Hilton Worldwide Holdings, Inc. | 9503 | &nbsp;&nbsp;&nbsp; $2465458 |
| Viking Holdings Ltd. (a) | 16817 | &nbsp;&nbsp;&nbsp; 1045345 |
|  |  | &nbsp;&nbsp;&nbsp; $3510803 |
| Health Maintenance Organizations – 1.1% | Health Maintenance Organizations – 1.1% |  |
| Cigna Group | 9918 | &nbsp;&nbsp;&nbsp; $2858864 |
| Humana, Inc. | 4683 | &nbsp;&nbsp;&nbsp; 1218376 |
|  |  | &nbsp;&nbsp;&nbsp; $4077240 |
| Insurance – 3.0% | Insurance – 3.0% |  |
| American International Group, Inc. | 22846 | &nbsp;&nbsp;&nbsp; $1794325 |
| Aon PLC | 9048 | &nbsp;&nbsp;&nbsp; 3226336 |
| Chubb Ltd. | 11491 | &nbsp;&nbsp;&nbsp; 3243335 |
| Willis Towers Watson PLC | 9563 | &nbsp;&nbsp;&nbsp; 3303538 |
|  |  | &nbsp;&nbsp;&nbsp; $11567534 |
| Interactive Media Services – 7.6% | Interactive Media Services – 7.6% |  |
| Alphabet, Inc., "A" (s) | 55379 | &nbsp;&nbsp;&nbsp; $13462635 |
| Meta Platforms, Inc., "A" | 20838 | &nbsp;&nbsp;&nbsp; 15303010 |
|  |  | &nbsp;&nbsp;&nbsp; $28765645 |
| Machinery & Tools – 2.7% | Machinery & Tools – 2.7% |  |
| Caterpillar, Inc. | 7407 | &nbsp;&nbsp;&nbsp; $3534250 |
| Nordson Corp. | 11450 | &nbsp;&nbsp;&nbsp; 2598577 |
| Regal Rexnord Corp. | 11199 | &nbsp;&nbsp;&nbsp; 1606385 |
| Trane Technologies PLC | 5701 | &nbsp;&nbsp;&nbsp; 2405594 |
|  |  | &nbsp;&nbsp;&nbsp; $10144806 |

---

------

*Portfolio of Investments (unaudited) – continued*

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Common Stocks – continued  | Common Stocks – continued  | Common Stocks – continued  |
| Major Banks – 4.6% | Major Banks – 4.6% |  |
| JPMorgan Chase & Co. | 31801 | &nbsp;&nbsp;&nbsp; $10030990 |
| Morgan Stanley | 22255 | &nbsp;&nbsp;&nbsp; 3537655 |
| PNC Financial Services Group, Inc. | 18866 | &nbsp;&nbsp;&nbsp; 3790745 |
|  |  | &nbsp;&nbsp;&nbsp; $17359390 |
| Medical & Health Technology & Services – 0.6% | Medical & Health Technology & Services – 0.6% |  |
| McKesson Corp.  | 2996 | &nbsp;&nbsp;&nbsp; $2314530 |
| Medical Equipment – 4.4% | Medical Equipment – 4.4% |  |
| Becton, Dickinson and Co. | 13424 | &nbsp;&nbsp;&nbsp; $2512570 |
| Boston Scientific Corp. (a) | 25332 | &nbsp;&nbsp;&nbsp; 2473163 |
| Medtronic PLC | 38657 | &nbsp;&nbsp;&nbsp; 3681693 |
| STERIS PLC | 9667 | &nbsp;&nbsp;&nbsp; 2392002 |
| Thermo Fisher Scientific, Inc. | 5911 | &nbsp;&nbsp;&nbsp; 2866953 |
| Waters Corp. (a) | 9759 | &nbsp;&nbsp;&nbsp; 2925846 |
|  |  | &nbsp;&nbsp;&nbsp; $16852227 |
| Natural Gas - Pipeline – 0.3% | Natural Gas - Pipeline – 0.3% |  |
| Cheniere Energy, Inc.  | 4209 | &nbsp;&nbsp;&nbsp; $989031 |
| Oil Services – 0.3% | Oil Services – 0.3% |  |
| TechnipFMC PLC  | 24170 | &nbsp;&nbsp;&nbsp; $953506 |
| Other Banks & Diversified Financials – 3.4% | Other Banks & Diversified Financials – 3.4% |  |
| Mastercard, Inc., "A" | 18974 | &nbsp;&nbsp;&nbsp; $10792601 |
| Moody's Corp. | 4646 | &nbsp;&nbsp;&nbsp; 2213726 |
|  |  | &nbsp;&nbsp;&nbsp; $13006327 |
| Pharmaceuticals – 3.5% | Pharmaceuticals – 3.5% |  |
| AbbVie, Inc. | 22050 | &nbsp;&nbsp;&nbsp; $5105457 |
| Johnson & Johnson | 28694 | &nbsp;&nbsp;&nbsp; 5320441 |
| Pfizer, Inc. | 88042 | &nbsp;&nbsp;&nbsp; 2243310 |
| Vertex Pharmaceuticals, Inc. (a) | 1237 | &nbsp;&nbsp;&nbsp; 484459 |
|  |  | &nbsp;&nbsp;&nbsp; $13153667 |
| Railroad & Shipping – 0.7% | Railroad & Shipping – 0.7% |  |
| Union Pacific Corp.  | 10594 | &nbsp;&nbsp;&nbsp; $2504104 |
| Restaurants – 1.8% | Restaurants – 1.8% |  |
| Aramark | 89827 | &nbsp;&nbsp;&nbsp; $3449357 |
| Starbucks Corp. | 18922 | &nbsp;&nbsp;&nbsp; 1600801 |
| U.S. Foods Holding Corp. (a) | 24255 | &nbsp;&nbsp;&nbsp; 1858418 |
|  |  | &nbsp;&nbsp;&nbsp; $6908576 |
| Specialty Chemicals – 0.9% | Specialty Chemicals – 0.9% |  |
| Air Products & Chemicals, Inc. | 7754 | &nbsp;&nbsp;&nbsp; $2114671 |
| Corteva, Inc. | 18602 | &nbsp;&nbsp;&nbsp; 1258053 |
|  |  | &nbsp;&nbsp;&nbsp; $3372724 |
| Specialty Stores – 6.8% | Specialty Stores – 6.8% |  |
| Amazon.com, Inc. (a)(s) | 81241 | &nbsp;&nbsp;&nbsp; $17838086 |
| BJ's Wholesale Club Holdings, Inc. (a) | 25154 | &nbsp;&nbsp;&nbsp; 2345611 |
| Home Depot, Inc. | 7837 | &nbsp;&nbsp;&nbsp; 3175474 |
| TJX Cos., Inc. | 17648 | &nbsp;&nbsp;&nbsp; 2550842 |
|  |  | &nbsp;&nbsp;&nbsp; $25910013 |
| Telecom - Infrastructure – 0.8% | Telecom - Infrastructure – 0.8% |  |
| American Tower Corp., REIT  | 16170 | &nbsp;&nbsp;&nbsp; $3109814 |

---

------

*Portfolio of Investments (unaudited) – continued*

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Common Stocks – continued  | Common Stocks – continued  | Common Stocks – continued  |
| Tobacco – 0.8% | Tobacco – 0.8% |  |
| Philip Morris International, Inc.  | 19723 | &nbsp;&nbsp;&nbsp; $3199071 |
| Trucking – 0.3% | Trucking – 0.3% |  |
| J.B. Hunt Transport Services, Inc.  | 9880 | &nbsp;&nbsp;&nbsp; $1325600 |
| Utilities - Electric Power – 2.4% | Utilities - Electric Power – 2.4% |  |
| Alliant Energy Corp. | 27932 | &nbsp;&nbsp;&nbsp; $1882896 |
| Duke Energy Corp. | 18334 | &nbsp;&nbsp;&nbsp; 2268833 |
| PG&E Corp. | 115208 | &nbsp;&nbsp;&nbsp; 1737337 |
| PPL Corp. | 46253 | &nbsp;&nbsp;&nbsp; 1718761 |
| Vistra Corp. | 7119 | &nbsp;&nbsp;&nbsp; 1394754 |
|  |  | &nbsp;&nbsp;&nbsp; $9002581 |
| **Total Common Stocks**  |  | &nbsp;&nbsp; **$379088287** |

---

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

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Strike** <br>**Price**<br>| &nbsp;&nbsp; **First** <br>**Exercise**<br>|  |  |
| 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 <br> 3/31/40) (a)<br>| CAD 11.5 | N/A | &nbsp;&nbsp;&nbsp;&nbsp; 2981 | &nbsp;&nbsp;&nbsp; $0 |

---

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

---

| | | |
|:---|:---|:---|
| Mutual Funds (h) – 0.3%  | Mutual Funds (h) – 0.3%  | Mutual Funds (h) – 0.3%  |
| Money Market Funds – 0.3% | Money Market Funds – 0.3% |  |
| MFS Institutional Money Market Portfolio, 4.19% (v)  | 1266670 | &nbsp;&nbsp;&nbsp; $1266797 |
| Other Assets, Less Liabilities – (0.1)% |  | &nbsp;&nbsp;&nbsp; (317061)<br>|
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | &nbsp;&nbsp; **$380038023** |

---

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

&nbsp;&nbsp;&nbsp;&nbsp;(a) Non-income producing security.

&nbsp;&nbsp;&nbsp;&nbsp;(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 $1,266,797 and $379,088,287, respectively.

&nbsp;&nbsp;&nbsp;&nbsp;(s) Security or a portion of the security was pledged to cover collateral requirements
 for securities sold short.

&nbsp;&nbsp;&nbsp;&nbsp;(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.

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

---

| | |
|:---|:---|
| The following abbreviations are used in this report and are defined: | The following abbreviations are used in this report and are defined: |
| REIT | Real Estate Investment Trust |
| Abbreviations indicate amounts shown in currencies other than the U.S. dollar. All amounts are stated in U.S. dollars unless otherwise <br> 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 <br> indicated. A list of abbreviations is shown below: |
| CAD | Canadian Dollar |

---

At September 30, 2025, the fund had cash collateral of $5,225 and other liquid securities with an aggregate value of $579,102 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**

9/30/25 (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.

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 September 30, 2025 in valuing the fund's assets and liabilities:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Financial Instruments** | **Level 1** | **Level 2** | **Level 3** | **Total** |
| Equity Securities: |  |  |  |  |
| &nbsp;&nbsp;&nbsp; United States | &nbsp;&nbsp;&nbsp; $372729351 | &nbsp;&nbsp;&nbsp; $— | &nbsp;&nbsp;&nbsp; $— | &nbsp;&nbsp;&nbsp; $372729351 |
| &nbsp;&nbsp;&nbsp; Sweden | &nbsp;&nbsp;&nbsp; 4306660 | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; 4306660 |
| &nbsp;&nbsp;&nbsp; Canada | &nbsp;&nbsp;&nbsp; 2052276 | &nbsp;&nbsp;&nbsp; 0 | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; 2052276 |
| Investment Companies | &nbsp;&nbsp;&nbsp; 1266797 | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; 1266797 |
| Total | &nbsp;&nbsp;&nbsp; $380355084 | &nbsp;&nbsp;&nbsp; $0 | &nbsp;&nbsp;&nbsp; $— | &nbsp;&nbsp;&nbsp; $380355084 |

---

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

------

*Supplemental Information (unaudited) – continued*

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

**(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 September 30, 2025:

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

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Affiliated Issuers** | **Beginning** <br>**Value**<br>| **Purchases** | **Sales** <br>**Proceeds**<br>| **Realized** <br>**Gain** <br>**(Loss)**<br>| **Change in** <br>**Unrealized** <br>**Appreciation or** <br>**Depreciation**<br>| **Ending** <br>**Value**<br>|
| MFS Institutional Money Market Portfolio  | &nbsp;&nbsp; $5314544 | &nbsp;&nbsp; $186845541 | &nbsp;&nbsp; $190887094 | &nbsp;&nbsp; $(5779)<br>| &nbsp;&nbsp; $(415)<br>| &nbsp;&nbsp; $1266797<br>|

---

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

---

| | | |
|:---|:---|:---|
| **Affiliated Issuers** | **Dividend** <br>**Income**<br>| **Capital Gain** <br>**Distributions**<br>|
| MFS Institutional Money Market Portfolio  | &nbsp;&nbsp; $154973 | &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 VARIABLE INSURANCE TRUST

- **b. Investment Company Act file number:** 811-08326

- **c. CIK number of Registrant:** 0000918571

- **d. LEI of Registrant:** 4GB90YGNINHU70MFQX13

- **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 Research Series

- **b. EDGAR series identifier (if any):** S000002668

- **c. LEI of Series:** 7AZFU5SPWYPK4FGVLU76

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

- **a. Date of fiscal year-end:** 2025-12-31

- **b. Date as of which information is reported:** 2025-09-30

**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:** $380476451.80

**Total Liabilities:** $244273.10

**Net Assets:** $380232178.70

**Cash Not Reported:** $5203.74

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000007306 | 2.52%                | 1.24%                | 1.84%                |
| Class ID C000007307 | 2.49%                | 1.22%                | 1.80%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $7435835.06              | $1969092.00                                |
| Month 2  | $1925494.88              | $2493454.31                                |
| Month 3  | $3617525.46              | $3216311.95                                |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Nordson Corp                             | Nordson Corp                             | CUSIP: 655663102<br>LEI: 14OS6Q5N55N95WM84M53 | Long             | EC               | CORP              | US        |     11450 | NS      | $2598577.50   | 0.68%             |  |  |  | No            |                  1 | On Loan: No      |
| Salesforce Inc                           | Salesforce Inc                           | CUSIP: 79466L302<br>LEI: RCGZFPDMRW58VJ54VR07 | Long             | EC               | CORP              | US        |     15651 | NS      | $3709287.00   | 0.98%             |  |  |  | No            |                  1 | On Loan: No      |
| Accenture PLC                            | Accenture PLC                            | CUSIP: 000000000<br>LEI: 5493000EWHDSR3MZWH98 | Long             | EC               | CORP              | IE        |     15603 | NS      | $3847699.80   | 1.01%             |  |  |  | No            |                  1 | On Loan: No      |
| Vistra Corp                              | Vistra Corp                              | CUSIP: 92840M102<br>LEI: 549300KP43CPCUJOOG15 | Long             | EC               | CORP              | US        |      7119 | NS      | $1394754.48   | 0.37%             |  |  |  | No            |                  1 | On Loan: No      |
| Atlassian Corp                           | Atlassian Corp                           | CUSIP: 049468101<br>LEI: 549300V7ZY5P02D2MY38 | Long             | EC               | CORP              | US        |     11783 | NS      | $1881745.10   | 0.49%             |  |  |  | No            |                  1 | On Loan: No      |
| Vertex Pharmaceuticals Inc               | Vertex Pharmaceuticals Inc               | CUSIP: 92532F100<br>LEI: 54930015RAQRRZ5ZGJ91 | Long             | EC               | CORP              | US        |      1237 | NS      | $484458.68    | 0.13%             |  |  |  | No            |                  1 | On Loan: No      |
| Mondelez International Inc               | Mondelez International Inc               | CUSIP: 609207105<br>LEI: 549300DV9GIB88LZ5P30 | Long             | EC               | CORP              | US        |     25633 | NS      | $1601293.51   | 0.42%             |  |  |  | No            |                  1 | On Loan: No      |
| Okta Inc                                 | Okta Inc                                 | CUSIP: 679295105<br>LEI: 549300N8J06I8MRHU620 | Long             | EC               | CORP              | US        |     27021 | NS      | $2477825.70   | 0.65%             |  |  |  | No            |                  1 | On Loan: No      |
| Union Pacific Corp                       | Union Pacific Corp                       | CUSIP: 907818108<br>LEI: 549300LMMRSZZCZ8CL11 | Long             | EC               | CORP              | US        |     10594 | NS      | $2504103.78   | 0.66%             |  |  |  | No            |                  1 | On Loan: No      |
| Johnson & Johnson                        | Johnson & Johnson                        | CUSIP: 478160104<br>LEI: 549300G0CFPGEF6X2043 | Long             | EC               | CORP              | US        |     28694 | NS      | $5320441.48   | 1.40%             |  |  |  | No            |                  1 | On Loan: No      |
| Philip Morris International Inc          | Philip Morris International Inc          | CUSIP: 718172109<br>LEI: HL3H1H2BGXWVG3BSWR90 | Long             | EC               | CORP              | US        |     19723 | NS      | $3199070.60   | 0.84%             |  |  |  | No            |                  1 | On Loan: No      |
| Valero Energy Corp                       | Valero Energy Corp                       | CUSIP: 91913Y100<br>LEI: 549300XTO5VR8SKV1V74 | Long             | EC               | CORP              | US        |      8338 | NS      | $1419627.88   | 0.37%             |  |  |  | No            |                  1 | On Loan: No      |
| Amphenol Corp                            | Amphenol Corp                            | CUSIP: 032095101<br>LEI: 549300D3L3G0R4U4VT04 | Long             | EC               | CORP              | US        |     18223 | NS      | $2255096.25   | 0.59%             |  |  |  | No            |                  1 | On Loan: No      |
| Hilton Worldwide Holdings Inc            | Hilton Worldwide Holdings Inc            | CUSIP: 43300A203<br>LEI: 549300HVGPK36ICB0B89 | Long             | EC               | CORP              | US        |      9503 | NS      | $2465458.32   | 0.65%             |  |  |  | No            |                  1 | On Loan: No      |
| AbbVie Inc                               | AbbVie Inc                               | CUSIP: 00287Y109<br>LEI: FR5LCKFTG8054YNNRU85 | Long             | EC               | CORP              | US        |     22050 | NS      | $5105457.00   | 1.34%             |  |  |  | No            |                  1 | On Loan: No      |
| Air Products and Chemicals Inc           | Air Products and Chemicals Inc           | CUSIP: 009158106<br>LEI: 7QEON6Y1RL5XR3R1W237 | Long             | EC               | CORP              | US        |      7754 | NS      | $2114670.88   | 0.56%             |  |  |  | No            |                  1 | On Loan: No      |
| Thermo Fisher Scientific Inc             | Thermo Fisher Scientific Inc             | CUSIP: 883556102<br>LEI: HCHV7422L5HDJZCRFL38 | Long             | EC               | CORP              | US        |      5911 | NS      | $2866953.22   | 0.75%             |  |  |  | No            |                  1 | On Loan: No      |
| Expedia Group Inc                        | Expedia Group Inc                        | CUSIP: 30212P303<br>LEI: CI7MUJI4USF3V0NJ1H64 | Long             | EC               | CORP              | US        |      9726 | NS      | $2078932.50   | 0.55%             |  |  |  | No            |                  1 | On Loan: No      |
| Constellation Software Inc/Canada        | Constellation Software Inc/Canada        | CUSIP: 21037X100<br>LEI: 549300B6PYHMCTDWQV29 | Long             | EC               | CORP              | CA        |       756 | NS      | $2052276.27   | 0.54%             |  |  |  | No            |                  1 | On Loan: No      |
| Cognizant Technology Solutions Corp      | Cognizant Technology Solutions Corp      | CUSIP: 192446102<br>LEI: 5493006IEVQEFQO40L83 | Long             | EC               | CORP              | US        |     24567 | NS      | $1647708.69   | 0.43%             |  |  |  | No            |                  1 | On Loan: No      |
| Aramark                                  | Aramark                                  | CUSIP: 03852U106<br>LEI: 549300MR6PG2DWZUIL39 | Long             | EC               | CORP              | US        |     75014 | NS      | $2880537.60   | 0.76%             |  |  |  | No            |                  1 | On Loan: No      |
| Chubb Ltd                                | Chubb Ltd                                | CUSIP: 000000000<br>LEI: E0JAN6VLUDI1HITHT809 | Long             | EC               | CORP              | CH        |     11491 | NS      | $3243334.75   | 0.85%             |  |  |  | No            |                  1 | On Loan: No      |
| Omnicom Group Inc                        | Omnicom Group Inc                        | CUSIP: 681919106<br>LEI: HKUPACFHSSASQK8HLS17 | Long             | EC               | CORP              | US        |     39467 | NS      | $3217744.51   | 0.85%             |  |  |  | No            |                  1 | On Loan: No      |
| PNC Financial Services Group Inc/The     | PNC Financial Services Group Inc/The     | CUSIP: 693475105<br>LEI: CFGNEKW0P8842LEUIA51 | Long             | EC               | CORP              | US        |     18866 | NS      | $3790745.38   | 1.00%             |  |  |  | No            |                  1 | On Loan: No      |
| Spotify Technology SA                    | Spotify Technology SA                    | CUSIP: 000000000<br>LEI: 549300B4X0JHWV0DTD60 | Long             | EC               | CORP              | LU        |      6170 | NS      | $4306660.00   | 1.13%             |  |  |  | No            |                  1 | On Loan: No      |
| General Dynamics Corp                    | General Dynamics Corp                    | CUSIP: 369550108<br>LEI: 9C1X8XOOTYY2FNYTVH06 | Long             | EC               | CORP              | US        |      7978 | NS      | $2720498.00   | 0.72%             |  |  |  | No            |                  1 | On Loan: No      |
| US Foods Holding Corp                    | US Foods Holding Corp                    | CUSIP: 912008109<br>LEI: 549300UGOZSO64CFPR97 | Long             | EC               | CORP              | US        |     34144 | NS      | $2616113.28   | 0.69%             |  |  |  | No            |                  1 | On Loan: No      |
| Cheniere Energy Inc                      | Cheniere Energy Inc                      | CUSIP: 16411R208<br>LEI: MIHC87W9WTYSYZWV1J40 | Long             | EC               | CORP              | US        |      4209 | NS      | $989030.82    | 0.26%             |  |  |  | No            |                  1 | On Loan: No      |
| Moody's Corp                             | Moody's Corp                             | CUSIP: 615369105<br>LEI: 549300GCEDD8YCF5WU84 | Long             | EC               | CORP              | US        |      4646 | NS      | $2213726.08   | 0.58%             |  |  |  | No            |                  1 | On Loan: No      |
| PPL Corp                                 | PPL Corp                                 | CUSIP: 69351T106<br>LEI: 9N3UAJSNOUXFKQLF3V18 | Long             | EC               | CORP              | US        |     46253 | NS      | $1718761.48   | 0.45%             |  |  |  | No            |                  1 | On Loan: No      |
| Medtronic PLC                            | Medtronic PLC                            | CUSIP: 000000000<br>LEI: 549300GX3ZBSQWUXY261 | Long             | EC               | CORP              | IE        |     38657 | NS      | $3681692.68   | 0.97%             |  |  |  | No            |                  1 | On Loan: No      |
| Corteva Inc                              | Corteva Inc                              | CUSIP: 22052L104<br>LEI: 549300WZN9I2QKLS0O94 | Long             | EC               | CORP              | US        |     18602 | NS      | $1258053.26   | 0.33%             |  |  |  | No            |                  1 | On Loan: No      |
| PepsiCo Inc                              | PepsiCo Inc                              | CUSIP: 713448108<br>LEI: FJSUNZKFNQ5YPJ5OT455 | Long             | EC               | CORP              | US        |     19839 | NS      | $2786189.16   | 0.73%             |  |  |  | No            |                  1 | On Loan: No      |
| CME Group Inc                            | CME Group Inc                            | CUSIP: 12572Q105<br>LEI: LCZ7XYGSLJUHFXXNXD88 | Long             | EC               | CORP              | US        |     13064 | NS      | $3529762.16   | 0.93%             |  |  |  | No            |                  1 | On Loan: No      |
| Alphabet Inc                             | Alphabet Inc                             | CUSIP: 02079K305<br>LEI: 5493006MHB84DD0ZWV18 | Long             | EC               | CORP              | US        |     55379 | NS      | $13462634.90  | 3.54%             |  |  |  | No            |                  1 | On Loan: No      |
| Estee Lauder Cos Inc/The                 | Estee Lauder Cos Inc/The                 | CUSIP: 518439104<br>LEI: 549300VFZ8XJ9NUPU221 | Long             | EC               | CORP              | US        |     11744 | NS      | $1034881.28   | 0.27%             |  |  |  | No            |                  1 | On Loan: No      |
| Boston Scientific Corp                   | Boston Scientific Corp                   | CUSIP: 101137107<br>LEI: Y6ZDD9FP4P8JSSJMW954 | Long             | EC               | CORP              | US        |     25332 | NS      | $2473163.16   | 0.65%             |  |  |  | No            |                  1 | On Loan: No      |
| CONSTELLATION SOFTWARE INC               | CONSTELLATION SOFTWARE INC               | CUSIP: 000000000<br>LEI: 549300B6PYHMCTDWQV29 | N/A              | DE               |  | CA        |      2981 | 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        |     35060 | NS      | $4694534.00   | 1.23%             |  |  |  | No            |                  1 | On Loan: No      |
| NXP Semiconductors NV                    | NXP Semiconductors NV                    | CUSIP: 000000000<br>LEI: 724500M9BY5293JDF951 | Long             | EC               | CORP              | NL        |      8803 | NS      | $2004707.19   | 0.53%             |  |  |  | No            |                  1 | On Loan: No      |
| BJ's Wholesale Club Holdings Inc         | BJ's Wholesale Club Holdings Inc         | CUSIP: 05550J101<br>LEI: 549300UCIWH1C93V0J03 | Long             | EC               | CORP              | US        |     25154 | NS      | $2345610.50   | 0.62%             |  |  |  | No            |                  1 | On Loan: No      |
| Tyler Technologies Inc                   | Tyler Technologies Inc                   | CUSIP: 902252105<br>LEI: 25490040SMU4Z8LBCW70 | Long             | EC               | CORP              | US        |      4644 | NS      | $2429555.04   | 0.64%             |  |  |  | No            |                  1 | On Loan: No      |
| Microsoft Corp                           | Microsoft Corp                           | CUSIP: 594918104<br>LEI: INR2EJN1ERAN0W5ZP974 | Long             | EC               | CORP              | US        |     61903 | NS      | $32062658.85  | 8.43%             |  |  |  | No            |                  1 | On Loan: No      |
| Becton Dickinson & Co                    | Becton Dickinson & Co                    | CUSIP: 075887109<br>LEI: ICE2EP6D98PQUILVRZ91 | Long             | EC               | CORP              | US        |     13424 | NS      | $2512570.08   | 0.66%             |  |  |  | No            |                  1 | On Loan: No      |
| American Tower Corp                      | American Tower Corp                      | CUSIP: 03027X100<br>LEI: 5493006ORUSIL88JOE18 | Long             | EC               | CORP              | US        |     16170 | NS      | $3109814.40   | 0.82%             |  |  |  | No            |                  1 | On Loan: No      |
| Regal Rexnord Corp                       | Regal Rexnord Corp                       | CUSIP: 758750103<br>LEI: QH78R09VCJGQKPBPYU33 | Long             | EC               | CORP              | US        |     11199 | NS      | $1606384.56   | 0.42%             |  |  |  | No            |                  1 | On Loan: No      |
| Aptiv PLC                                | Aptiv PLC                                | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | JE        |     26081 | NS      | $2248703.82   | 0.59%             |  |  |  | No            |                  1 | On Loan: No      |
| Trane Technologies PLC                   | Trane Technologies PLC                   | CUSIP: 000000000<br>LEI: 549300BURLR9SLYY2705 | Long             | EC               | CORP              | IE        |      5701 | NS      | $2405593.96   | 0.63%             |  |  |  | No            |                  1 | On Loan: No      |
| Willis Towers Watson PLC                 | Willis Towers Watson PLC                 | CUSIP: 000000000<br>LEI: 549300WHC56FF48KL350 | Long             | EC               | CORP              | IE        |      9563 | NS      | $3303538.35   | 0.87%             |  |  |  | No            |                  1 | On Loan: No      |
| NVIDIA Corp                              | NVIDIA Corp                              | CUSIP: 67066G104<br>LEI: 549300S4KLFTLO7GSQ80 | Long             | EC               | CORP              | US        |    149978 | NS      | $27982895.24  | 7.36%             |  |  |  | No            |                  1 | On Loan: No      |
| Chevron Corp                             | Chevron Corp                             | CUSIP: 166764100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |      8215 | NS      | $1275707.35   | 0.34%             |  |  |  | No            |                  1 | On Loan: No      |
| Cigna Group/The                          | Cigna Group/The                          | CUSIP: 125523100<br>LEI: 549300VIWYMSIGT1U456 | Long             | EC               | CORP              | US        |      9918 | NS      | $2858863.50   | 0.75%             |  |  |  | No            |                  1 | On Loan: No      |
| TransUnion                               | TransUnion                               | CUSIP: 89400J107<br>LEI: 549300ZS772LUNUMRB03 | Long             | EC               | CORP              | US        |     29839 | NS      | $2499911.42   | 0.66%             |  |  |  | No            |                  1 | On Loan: No      |
| Exxon Mobil Corp                         | Exxon Mobil Corp                         | CUSIP: 30231G102<br>LEI: J3WHBG0MTS7O8ZVMDC91 | Long             | EC               | CORP              | US        |     35506 | NS      | $4003301.50   | 1.05%             |  |  |  | No            |                  1 | On Loan: No      |
| TJX Cos Inc/The                          | TJX Cos Inc/The                          | CUSIP: 872540109<br>LEI: V167QI9I69W364E2DY52 | Long             | EC               | CORP              | US        |     17648 | NS      | $2550841.92   | 0.67%             |  |  |  | No            |                  1 | On Loan: No      |
| Cadence Design Systems Inc               | Cadence Design Systems Inc               | CUSIP: 127387108<br>LEI: GCT7RXJOGLXPV0NXZY22 | Long             | EC               | CORP              | US        |     10821 | NS      | $3800984.46   | 1.00%             |  |  |  | No            |                  1 | On Loan: No      |
| Mastercard Inc                           | Mastercard Inc                           | CUSIP: 57636Q104<br>LEI: AR5L2ODV9HN37376R084 | Long             | EC               | CORP              | US        |     18974 | NS      | $10792600.94  | 2.84%             |  |  |  | No            |                  1 | On Loan: No      |
| Broadcom Inc                             | Broadcom Inc                             | CUSIP: 11135F101<br>LEI: 549300WV6GIDOZJTV909 | Long             | EC               | CORP              | US        |     39428 | NS      | $13007691.48  | 3.42%             |  |  |  | No            |                  1 | On Loan: No      |
| Home Depot Inc/The                       | Home Depot Inc/The                       | CUSIP: 437076102<br>LEI: QEKMOTMBBKA8I816DO57 | Long             | EC               | CORP              | US        |      9236 | NS      | $3742334.84   | 0.98%             |  |  |  | No            |                  1 | On Loan: No      |
| Alliant Energy Corp                      | Alliant Energy Corp                      | CUSIP: 018802108<br>LEI: 5493009ML300G373MZ12 | Long             | EC               | CORP              | US        |     27932 | NS      | $1882896.12   | 0.50%             |  |  |  | No            |                  1 | On Loan: No      |
| PG&E Corp                                | PG&E Corp                                | CUSIP: 69331C108<br>LEI: 8YQ2GSDWYZXO2EDN3511 | Long             | EC               | CORP              | US        |    115208 | NS      | $1737336.64   | 0.46%             |  |  |  | No            |                  1 | On Loan: No      |
| Kenvue Inc                               | Kenvue Inc                               | CUSIP: 49177J102<br>LEI: 5493008HSF8L4M2LIJ82 | Long             | EC               | CORP              | US        |     80411 | NS      | $1305070.53   | 0.34%             |  |  |  | No            |                  1 | On Loan: No      |
| Arista Networks Inc                      | Arista Networks Inc                      | CUSIP: 040413205<br>LEI: 635400H1WKBLOQERUU95 | Long             | EC               | CORP              | US        |     22523 | NS      | $3281826.33   | 0.86%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Institutional Money Market Portfolio | MFS Institutional Money Market Portfolio | CUSIP: 55291X109<br>LEI: 5L2W638H85N8T1136O07 | Long             | EC               | RF                | US        |   1258424 | NS      | $1258550.06   | 0.33%             |  |  |  | No            |                  1 | On Loan: No      |
| TechnipFMC PLC                           | TechnipFMC PLC                           | CUSIP: 000000000<br>LEI: 549300D5I93QWCJTCK36 | Long             | EC               | CORP              | GB        |     24170 | NS      | $953506.50    | 0.25%             |  |  |  | No            |                  1 | On Loan: No      |
| Sherwin-Williams Co/The                  | Sherwin-Williams Co/The                  | CUSIP: 824348106<br>LEI: Z15BMIOX8DDH0X2OBP21 | Long             | EC               | CORP              | US        |      5694 | NS      | $1971604.44   | 0.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Charles Schwab Corp/The                  | Charles Schwab Corp/The                  | CUSIP: 808513105<br>LEI: 549300VSGCJ7E698NM85 | Long             | EC               | CORP              | US        |     39842 | NS      | $3803715.74   | 1.00%             |  |  |  | No            |                  1 | On Loan: No      |
| Duke Energy Corp                         | Duke Energy Corp                         | CUSIP: 26441C204<br>LEI: I1BZKREC126H0VB1BL91 | Long             | EC               | CORP              | US        |     18334 | NS      | $2268832.50   | 0.60%             |  |  |  | No            |                  1 | On Loan: No      |
| Meta Platforms Inc                       | Meta Platforms Inc                       | CUSIP: 30303M102<br>LEI: BQ4BKCS1HXDV9HN80Z93 | Long             | EC               | CORP              | US        |     20838 | NS      | $15303010.44  | 4.02%             |  |  |  | No            |                  1 | On Loan: No      |
| Pfizer Inc                               | Pfizer Inc                               | CUSIP: 717081103<br>LEI: 765LHXWGK1KXCLTFYQ30 | Long             | EC               | CORP              | US        |     88042 | NS      | $2243310.16   | 0.59%             |  |  |  | No            |                  1 | On Loan: No      |
| RTX Corp                                 | RTX Corp                                 | CUSIP: 75513E101<br>LEI: I07WOS4YJ0N7YRFE7309 | Long             | EC               | CORP              | US        |     32580 | NS      | $5451611.40   | 1.43%             |  |  |  | No            |                  1 | On Loan: No      |
| KKR & Co Inc                             | KKR & Co Inc                             | CUSIP: 48251W104<br>LEI: 54930013V5I303TF9571 | Long             | EC               | CORP              | US        |     14641 | NS      | $1902597.95   | 0.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Autodesk Inc                             | Autodesk Inc                             | CUSIP: 052769106<br>LEI: FRKKVKAIQEF3FCSTPG55 | Long             | EC               | CORP              | US        |      7096 | NS      | $2254186.32   | 0.59%             |  |  |  | No            |                  1 | On Loan: No      |
| Aon PLC                                  | Aon PLC                                  | CUSIP: 000000000<br>LEI: 635400FALWQYX5E6QC64 | Long             | EC               | CORP              | IE        |      9048 | NS      | $3226335.84   | 0.85%             |  |  |  | No            |                  1 | On Loan: No      |
| Starbucks Corp                           | Starbucks Corp                           | CUSIP: 855244109<br>LEI: OQSJ1DU9TAOC51A47K68 | Long             | EC               | CORP              | US        |     16706 | NS      | $1413327.60   | 0.37%             |  |  |  | No            |                  1 | On Loan: No      |
| Emerson Electric Co                      | Emerson Electric Co                      | CUSIP: 291011104<br>LEI: FGLT0EWZSUIRRITFOA30 | Long             | EC               | CORP              | US        |     24455 | NS      | $3208006.90   | 0.84%             |  |  |  | No            |                  1 | On Loan: No      |
| JB Hunt Transport Services Inc           | JB Hunt Transport Services Inc           | CUSIP: 445658107<br>LEI: 549300XCD1MPI1C5GK90 | Long             | EC               | CORP              | US        |      9880 | NS      | $1325599.60   | 0.35%             |  |  |  | No            |                  1 | On Loan: No      |
| PulteGroup Inc                           | PulteGroup Inc                           | CUSIP: 745867101<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     11262 | NS      | $1488048.06   | 0.39%             |  |  |  | No            |                  1 | On Loan: No      |
| Ferguson Enterprises Inc                 | Ferguson Enterprises Inc                 | CUSIP: 31488V107<br>LEI: 2138003JYQMRP3SLX189 | Long             | EC               | CORP              | US        |      7930 | NS      | $1780919.40   | 0.47%             |  |  |  | No            |                  1 | On Loan: No      |
| Morgan Stanley                           | Morgan Stanley                           | CUSIP: 617446448<br>LEI: IGJSJL3JD5P30I6NJZ34 | Long             | EC               | CORP              | US        |     22255 | NS      | $3537654.80   | 0.93%             |  |  |  | No            |                  1 | On Loan: No      |
| Caterpillar Inc                          | Caterpillar Inc                          | CUSIP: 149123101<br>LEI: WRJR7GS4GTRECRRTVX92 | Long             | EC               | CORP              | US        |      7407 | NS      | $3534250.05   | 0.93%             |  |  |  | No            |                  1 | On Loan: No      |
| McKesson Corp                            | McKesson Corp                            | CUSIP: 58155Q103<br>LEI: 549300WZWOM80UCFSF54 | Long             | EC               | CORP              | US        |      2996 | NS      | $2314529.84   | 0.61%             |  |  |  | No            |                  1 | On Loan: No      |
| Humana Inc                               | Humana Inc                               | CUSIP: 444859102<br>LEI: 529900YLDW34GJAO4J06 | Long             | EC               | CORP              | US        |      4683 | NS      | $1218376.11   | 0.32%             |  |  |  | No            |                  1 | On Loan: No      |
| Apple Inc                                | Apple Inc                                | CUSIP: 037833100<br>LEI: HWUPKR0MPOU8FGXBT394 | Long             | EC               | CORP              | US        |     87523 | NS      | $22285981.49  | 5.86%             |  |  |  | No            |                  1 | On Loan: No      |
| Howmet Aerospace Inc                     | Howmet Aerospace Inc                     | CUSIP: 443201108<br>LEI: 549300HO5WFZUT5N2T22 | Long             | EC               | CORP              | US        |     16050 | NS      | $3149491.50   | 0.83%             |  |  |  | No            |                  1 | On Loan: No      |
| Booking Holdings Inc                     | Booking Holdings Inc                     | CUSIP: 09857L108<br>LEI: FXM8FAOHMYDIPD38UZ17 | Long             | EC               | CORP              | US        |       363 | NS      | $1959935.01   | 0.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Colgate-Palmolive Co                     | Colgate-Palmolive Co                     | CUSIP: 194162103<br>LEI: YMEGZFW4SBUSS5BQXF88 | Long             | EC               | CORP              | US        |     23041 | NS      | $1841897.54   | 0.48%             |  |  |  | No            |                  1 | On Loan: No      |
| STERIS PLC                               | STERIS PLC                               | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | IE        |      9667 | NS      | $2392002.48   | 0.63%             |  |  |  | No            |                  1 | On Loan: No      |
| CRH PLC                                  | CRH PLC                                  | CUSIP: 000000000<br>LEI: 549300MIDJNNTH068E74 | Long             | EC               | CORP              | IE        |     28589 | NS      | $3427821.10   | 0.90%             |  |  |  | No            |                  1 | On Loan: No      |
| Waters Corp                              | Waters Corp                              | CUSIP: 941848103<br>LEI: 5T547R1474YC9HOD8Q74 | Long             | EC               | CORP              | US        |      9759 | NS      | $2925845.79   | 0.77%             |  |  |  | No            |                  1 | On Loan: No      |
| JPMorgan Chase & Co                      | JPMorgan Chase & Co                      | CUSIP: 46625H100<br>LEI: 8I5DZWZKVSZI1NUHU748 | Long             | EC               | CORP              | US        |     31801 | NS      | $10030989.43  | 2.64%             |  |  |  | No            |                  1 | On Loan: No      |
| Amazon.com Inc                           | Amazon.com Inc                           | CUSIP: 023135106<br>LEI: ZXTILKJKG63JELOEG630 | Long             | EC               | CORP              | US        |     78679 | NS      | $17275548.03  | 4.54%             |  |  |  | No            |                  1 | On Loan: No      |
| American International Group Inc         | American International Group Inc         | CUSIP: 026874784<br>LEI: ODVCVCQG2BP6VHV36M30 | Long             | EC               | CORP              | US        |     22846 | NS      | $1794324.84   | 0.47%             |  |  |  | No            |                  1 | On Loan: No      |
| Eaton Corp PLC                           | Eaton Corp PLC                           | CUSIP: 000000000<br>LEI: 549300VDIGTMXUNT7H71 | Long             | EC               | CORP              | IE        |      8650 | NS      | $3237262.50   | 0.85%             |  |  |  | No            |                  1 | On Loan: No      |
| ConocoPhillips                           | ConocoPhillips                           | CUSIP: 20825C104<br>LEI: WPTL2Z3FIYTHSP5V2253 | Long             | EC               | CORP              | US        |     32601 | NS      | $3083728.59   | 0.81%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2025-10-30

**Name of Applicant:** MFS VARIABLE INSURANCE TRUST

**Signature:** James Byrne

**Name of Signer:** James Byrne

**Title:** Assistant Treasurer