# EDGAR Filing Document

**Accession Number:** 0000918571
**File Stem:** 0001410368-26-050722
**Filing Date:** 2026-5
**Character Count:** 63922
**Document Hash:** 61d260a1e8b7e0712371612df76b8b8d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001410368-26-050722.hdr.sgml**: 20260526

**ACCESSION NUMBER**: 0001410368-26-050722

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 4

**CONFORMED PERIOD OF REPORT**: 20260331

**FILED AS OF DATE**: 20260526

**DATE AS OF CHANGE**: 20260526

**PERIOD START**: 20261231

**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:** 261016307

**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 New Discovery Series (Series ID: S000002680)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007329 | Initial Class |  |
| C000007330 | Service Class |  |

## Nport-Ex

VND-Q1

![](img62ac3d3e1.gif)

**Quarterly Report**

March 31, 2026

MFS<sup>®</sup> New Discovery Series

![](imge8e59bc52.gif)

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

------

**Portfolio of Investments**

3/31/26 (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 – 94.9%  | Common Stocks – 94.9%  | Common Stocks – 94.9%  |
| Aerospace & Defense – 7.0% | Aerospace & Defense – 7.0% |  |
| Amprius Technologies, Inc. (a) | 538534 | &nbsp;&nbsp;&nbsp; $9079683 |
| BETA Technologies, Inc., "A" (a) | 59576 | &nbsp;&nbsp;&nbsp; 875767 |
| CACI International, Inc., "A" (a) | 21982 | &nbsp;&nbsp;&nbsp; 11955350 |
| Karman Holdings, Inc. (a) | 48148 | &nbsp;&nbsp;&nbsp; 3854247 |
| Leonardo DRS, Inc. | 251877 | &nbsp;&nbsp;&nbsp; 11213564 |
| Mirion Technologies, Inc. (a) | 209079 | &nbsp;&nbsp;&nbsp; 3886779 |
| Standard Aero, Inc. (a) | 232279 | &nbsp;&nbsp;&nbsp; 5999767 |
| York Space Systems, Inc. (a)(l) | 129836 | &nbsp;&nbsp;&nbsp; 2878464 |
|  |  | &nbsp;&nbsp;&nbsp; $49743621 |
| Apparel, Footwear, & Accessories – 1.5% | Apparel, Footwear, & Accessories – 1.5% |  |
| Birkenstock Holding PLC (a) | 169864 | &nbsp;&nbsp;&nbsp; $6086227 |
| Columbia Sportswear Co. | 81312 | &nbsp;&nbsp;&nbsp; 4456711 |
|  |  | &nbsp;&nbsp;&nbsp; $10542938 |
| Auto & Auto Components – 2.3% | Auto & Auto Components – 2.3% |  |
| Modine Manufacturing Co. (a) | 55903 | &nbsp;&nbsp;&nbsp; $12114739 |
| Visteon Corp. | 47608 | &nbsp;&nbsp;&nbsp; 4337565 |
|  |  | &nbsp;&nbsp;&nbsp; $16452304 |
| Brokerage & Asset Managers – 2.9% | Brokerage & Asset Managers – 2.9% |  |
| GCM Grosvenor, Inc., "A" | 338106 | &nbsp;&nbsp;&nbsp; $3313439 |
| Hamilton Lane, Inc., "A" | 39657 | &nbsp;&nbsp;&nbsp; 3941906 |
| PJT Partners, Inc. | 60109 | &nbsp;&nbsp;&nbsp; 8398429 |
| WisdomTree Investments, Inc. | 355064 | &nbsp;&nbsp;&nbsp; 5169732 |
|  |  | &nbsp;&nbsp;&nbsp; $20823506 |
| Chemicals – 2.4% | Chemicals – 2.4% |  |
| BioLife Solutions, Inc. (a) | 305049 | &nbsp;&nbsp;&nbsp; $5820335 |
| Element Solutions, Inc. | 333090 | &nbsp;&nbsp;&nbsp; 11371692 |
|  |  | &nbsp;&nbsp;&nbsp; $17192027 |
| Construction – 6.1% | Construction – 6.1% |  |
| Independence Realty Trust, Inc., REIT | 231536 | &nbsp;&nbsp;&nbsp; $3447571 |
| James Hardie Industries PLC (a) | 366531 | &nbsp;&nbsp;&nbsp; 6942097 |
| Knife River Corp. (a) | 115426 | &nbsp;&nbsp;&nbsp; 9424533 |
| QXO, Inc. (a) | 822558 | &nbsp;&nbsp;&nbsp; 15974076 |
| Simpson Manufacturing Co., Inc. | 41274 | &nbsp;&nbsp;&nbsp; 7083444 |
|  |  | &nbsp;&nbsp;&nbsp; $42871721 |
| Consumer Services – 0.7% | Consumer Services – 0.7% |  |
| Adtalem Global Education, Inc. (a)  | 43957 | &nbsp;&nbsp;&nbsp; $5066044 |
| Diversified Financial Services – 0.5% | Diversified Financial Services – 0.5% |  |
| Miami International Holdings, Inc. (a)  | 90781 | &nbsp;&nbsp;&nbsp; $3533197 |
| Electrical Equipment – 4.1% | Electrical Equipment – 4.1% |  |
| Advanced Drainage Systems, Inc. | 30141 | &nbsp;&nbsp;&nbsp; $4133235 |
| Littlefuse, Inc. | 34750 | &nbsp;&nbsp;&nbsp; 11792413 |
| nVent Electric PLC | 112355 | &nbsp;&nbsp;&nbsp; 13289349 |
|  |  | &nbsp;&nbsp;&nbsp; $29214997 |
| Energy - Independent – 2.8% | Energy - Independent – 2.8% |  |
| Antero Resources Corp. (a) | 138438 | &nbsp;&nbsp;&nbsp; $5875309 |
| Matador Resources Co. | 74278 | &nbsp;&nbsp;&nbsp; 4692884 |
| Permian Resources Corp. | 208509 | &nbsp;&nbsp;&nbsp; 4445412 |

---

------

*Portfolio of Investments (unaudited) – continued*

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Common Stocks – continued  | Common Stocks – continued  | Common Stocks – continued  |
| Energy - Independent – continued | Energy - Independent – continued |  |
| Viper Energy, Inc., "A" | 101598 | &nbsp;&nbsp;&nbsp; $4774090 |
|  |  | &nbsp;&nbsp;&nbsp; $19787695 |
| Energy - Renewables – 1.1% | Energy - Renewables – 1.1% |  |
| Bloom Energy Corp. (a)  | 58075 | &nbsp;&nbsp;&nbsp; $7868582 |
| Engineering - Construction – 4.4% | Engineering - Construction – 4.4% |  |
| Legence Corp., "A" (a) | 190272 | &nbsp;&nbsp;&nbsp; $10742757 |
| Primoris Services Corp. | 73534 | &nbsp;&nbsp;&nbsp; 10518304 |
| TopBuild Corp. (a) | 27887 | &nbsp;&nbsp;&nbsp; 9796703 |
|  |  | &nbsp;&nbsp;&nbsp; $31057764 |
| Entertainment & Leisure – 2.0% | Entertainment & Leisure – 2.0% |  |
| Brunswick Corp. | 73414 | &nbsp;&nbsp;&nbsp; $5341603 |
| Corsair Gaming, Inc. (a) | 603476 | &nbsp;&nbsp;&nbsp; 3349292 |
| Patrick Industries, Inc. | 51737 | &nbsp;&nbsp;&nbsp; 5746428 |
|  |  | &nbsp;&nbsp;&nbsp; $14437323 |
| Food & Beverages – 0.4% | Food & Beverages – 0.4% |  |
| Once Upon a Farm PBC (a)(l)  | 158134 | &nbsp;&nbsp;&nbsp; $2585491 |
| Hardware, Peripherals, & Assembly – 2.3% | Hardware, Peripherals, & Assembly – 2.3% |  |
| Box, Inc., "A" (a) | 301037 | &nbsp;&nbsp;&nbsp; $7116515 |
| Q2 Holdings, Inc. (a) | 108287 | &nbsp;&nbsp;&nbsp; 5121975 |
| Wix.com Ltd. (a) | 46390 | &nbsp;&nbsp;&nbsp; 4178347 |
|  |  | &nbsp;&nbsp;&nbsp; $16416837 |
| Machinery & Tools – 3.6% | Machinery & Tools – 3.6% |  |
| Crane Co. | 52863 | &nbsp;&nbsp;&nbsp; $9039573 |
| Finning International, Inc. | 114041 | &nbsp;&nbsp;&nbsp; 7056753 |
| Flowserve Corp. | 129545 | &nbsp;&nbsp;&nbsp; 9522853 |
|  |  | &nbsp;&nbsp;&nbsp; $25619179 |
| Medical & Health Technology & Services – 6.7% | Medical & Health Technology & Services – 6.7% |  |
| Azenta, Inc. (a) | 270096 | &nbsp;&nbsp;&nbsp; $5707128 |
| Charles River Laboratories International, Inc. (a) | 66861 | &nbsp;&nbsp;&nbsp; 11533523 |
| GeneDX Holdings Corp. (a) | 85664 | &nbsp;&nbsp;&nbsp; 5501342 |
| Guardant Health, Inc. (a) | 62028 | &nbsp;&nbsp;&nbsp; 5729526 |
| Schrodinger, Inc. (a) | 702349 | &nbsp;&nbsp;&nbsp; 7978685 |
| Tempus AI, Inc. (a) | 31351 | &nbsp;&nbsp;&nbsp; 1417692 |
| Waystar Holding Corp. (a) | 380698 | &nbsp;&nbsp;&nbsp; 9178629 |
|  |  | &nbsp;&nbsp;&nbsp; $47046525 |
| Medical Equipment – 8.7% | Medical Equipment – 8.7% |  |
| AtriCure, Inc. (a) | 123165 | &nbsp;&nbsp;&nbsp; $3513897 |
| Billiontoone, Inc., "A" (a)(l) | 18955 | &nbsp;&nbsp;&nbsp; 1496308 |
| Bio-Techne Corp. | 245517 | &nbsp;&nbsp;&nbsp; 12830718 |
| Caris Life Sciences, Inc. (a) | 63553 | &nbsp;&nbsp;&nbsp; 1136328 |
| Ceribell, Inc. (a) | 130477 | &nbsp;&nbsp;&nbsp; 2391643 |
| Globus Medical, Inc. (a) | 62172 | &nbsp;&nbsp;&nbsp; 5356740 |
| Integer Holdings Corp. (a) | 119533 | &nbsp;&nbsp;&nbsp; 10518904 |
| iRhythm Technologies, Inc. (a) | 39989 | &nbsp;&nbsp;&nbsp; 4719502 |
| Merit Medical Systems, Inc. (a) | 118616 | &nbsp;&nbsp;&nbsp; 8176201 |
| PROCEPT BioRobotics Corp. (a) | 99851 | &nbsp;&nbsp;&nbsp; 2497273 |
| Pulse Biosciences, Inc. (a) | 122295 | &nbsp;&nbsp;&nbsp; 2640349 |
| UFP Technologies, Inc. (a) | 31681 | &nbsp;&nbsp;&nbsp; 6133442 |
|  |  | &nbsp;&nbsp;&nbsp; $61411305 |

---

------

*Portfolio of Investments (unaudited) – continued*

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Common Stocks – continued  | Common Stocks – continued  | Common Stocks – continued  |
| Metals & Mining – 1.9% | Metals & Mining – 1.9% |  |
| SSR Mining, Inc. (a) | 251215 | &nbsp;&nbsp;&nbsp; $7385721 |
| Uranium Energy Corp. (a) | 462241 | &nbsp;&nbsp;&nbsp; 6240253 |
|  |  | &nbsp;&nbsp;&nbsp; $13625974 |
| Oil Services – 2.0% | Oil Services – 2.0% |  |
| Oceaneering International, Inc. (a) | 181153 | &nbsp;&nbsp;&nbsp; $6425497 |
| TechnipFMC PLC | 111622 | &nbsp;&nbsp;&nbsp; 7716429 |
|  |  | &nbsp;&nbsp;&nbsp; $14141926 |
| Pharmaceuticals & Biotechnology – 10.4% | Pharmaceuticals & Biotechnology – 10.4% |  |
| ABSCI Corp. (a) | 451688 | &nbsp;&nbsp;&nbsp; $1355064 |
| Adaptive Biotechnologies Corp. (a) | 283420 | &nbsp;&nbsp;&nbsp; 3933870 |
| Annexon, Inc. (a) | 232809 | &nbsp;&nbsp;&nbsp; 1289762 |
| Ascendis Pharma, ADR (a) | 29377 | &nbsp;&nbsp;&nbsp; 6719401 |
| CG Oncology, Inc. (a) | 36262 | &nbsp;&nbsp;&nbsp; 2454212 |
| Cogent Biosciences, Inc. (a) | 125047 | &nbsp;&nbsp;&nbsp; 4813059 |
| Collegium Pharmaceutical, Inc. (a) | 211180 | &nbsp;&nbsp;&nbsp; 6983723 |
| Cytokinetics, Inc. (a) | 73064 | &nbsp;&nbsp;&nbsp; 4815648 |
| Harmony Biosciences Holdings (a) | 65422 | &nbsp;&nbsp;&nbsp; 1832470 |
| Immunocore Holdings PLC, ADR (a) | 102016 | &nbsp;&nbsp;&nbsp; 3075782 |
| Ionis Pharmaceuticals, Inc. (a) | 94701 | &nbsp;&nbsp;&nbsp; 7111098 |
| Kiniksa Pharmaceuticals International PLC (a) | 107710 | &nbsp;&nbsp;&nbsp; 5186237 |
| Kymera Therapeutics, Inc. (a) | 48058 | &nbsp;&nbsp;&nbsp; 4002751 |
| Legend Biotech Corp., ADR (a) | 151845 | &nbsp;&nbsp;&nbsp; 2746876 |
| Ligand Pharmaceuticals, Inc. (a) | 63950 | &nbsp;&nbsp;&nbsp; 12767617 |
| Neurocrine Biosciences, Inc. (a) | 24788 | &nbsp;&nbsp;&nbsp; 3265571 |
| Ultragenyx Pharmaceutical, Inc. (a) | 63320 | &nbsp;&nbsp;&nbsp; 1326554 |
|  |  | &nbsp;&nbsp;&nbsp; $73679695 |
| Pollution Control – 0.6% | Pollution Control – 0.6% |  |
| GFL Environmental, Inc.  | 104229 | &nbsp;&nbsp;&nbsp; $4348434 |
| Real Estate - Storage & Office – 1.3% | Real Estate - Storage & Office – 1.3% |  |
| Terreno Realty Corp., REIT  | 152040 | &nbsp;&nbsp;&nbsp; $9338297 |
| Restaurants – 3.4% | Restaurants – 3.4% |  |
| Black Rock Coffee Bar, Inc., "A" (a) | 174977 | &nbsp;&nbsp;&nbsp; $2260703 |
| Chefs' Warehouse, Inc. (a) | 185046 | &nbsp;&nbsp;&nbsp; 11000985 |
| Dutch Bros, Inc., "A" (a) | 115575 | &nbsp;&nbsp;&nbsp; 5855029 |
| U.S. Foods Holding Corp. (a) | 50456 | &nbsp;&nbsp;&nbsp; 4652548 |
|  |  | &nbsp;&nbsp;&nbsp; $23769265 |
| Retail & E-commerce – 1.2% | Retail & E-commerce – 1.2% |  |
| Ollie's Bargain Outlet Holdings, Inc. (a)  | 88093 | &nbsp;&nbsp;&nbsp; $8108080 |
| Semiconductor & Electronic Components – 8.1% | Semiconductor & Electronic Components – 8.1% |  |
| Advanced Energy Industries, Inc. | 55529 | &nbsp;&nbsp;&nbsp; $17919764 |
| Formfactor, Inc. (a) | 103682 | &nbsp;&nbsp;&nbsp; 10056117 |
| MACOM Technology Solutions Holdings, Inc. (a) | 52370 | &nbsp;&nbsp;&nbsp; 11629806 |
| nLIGHT, Inc. (a) | 150023 | &nbsp;&nbsp;&nbsp; 8554311 |
| TTM Technologies, Inc. (a) | 95597 | &nbsp;&nbsp;&nbsp; 9313060 |
|  |  | &nbsp;&nbsp;&nbsp; $57473058 |
| Software – 3.0% | Software – 3.0% |  |
| Alkami Technology, Inc. (a) | 332697 | &nbsp;&nbsp;&nbsp; $5213362 |
| CCC Intelligent Holdings, Inc. (a) | 1181274 | &nbsp;&nbsp;&nbsp; 7087644 |
| JFrog Ltd. (a) | 185480 | &nbsp;&nbsp;&nbsp; 8704576 |
|  |  | &nbsp;&nbsp;&nbsp; $21005582 |

---

------

*Portfolio of Investments (unaudited) – continued*

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Common Stocks – continued  | Common Stocks – continued  | Common Stocks – continued  |
| Transportation & Logistics – 2.0% | Transportation & Logistics – 2.0% |  |
| Knight-Swift Transportation Holdings, Inc. | 82365 | &nbsp;&nbsp;&nbsp; $4742577 |
| XPO, Inc. (a) | 47135 | &nbsp;&nbsp;&nbsp; 9170114 |
|  |  | &nbsp;&nbsp;&nbsp; $13912691 |
| Travel, Gaming, & Lodging – 1.5% | Travel, Gaming, & Lodging – 1.5% |  |
| Genius Sports Ltd. (a) | 1048940 | &nbsp;&nbsp;&nbsp; $4646804 |
| Sportradar Group AG (a) | 336452 | &nbsp;&nbsp;&nbsp; 5632207 |
|  |  | &nbsp;&nbsp;&nbsp; $10279011 |
| **Total Common Stocks**  |  | &nbsp;&nbsp; **$671353069** |
| Contingent Value Rights – 0.0% | Contingent Value Rights – 0.0% | Contingent Value Rights – 0.0% |
| Pharmaceuticals & Biotechnology – 0.0% | Pharmaceuticals & Biotechnology – 0.0% | Pharmaceuticals & Biotechnology – 0.0% |
| Sanofi S.A., (a)(u)  | 13985 | &nbsp;&nbsp;&nbsp; $0 |

---

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

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Strike** <br>**Price**<br>| &nbsp;&nbsp; **First** <br>**Exercise**<br>|  |  |
| Warrants – 0.0% |  |  |  |  |
| Medical Equipment – 0.0% | Medical Equipment – 0.0% | Medical Equipment – 0.0% | Medical Equipment – 0.0% | Medical Equipment – 0.0% |
| OptiNose, Inc. (Expiration 11/23/27) (a) | $2.565 | 11/23/27 | &nbsp;&nbsp;&nbsp;&nbsp; 2 | &nbsp;&nbsp;&nbsp; $0 |

---

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

---

| | | |
|:---|:---|:---|
| Mutual Funds (h) – 6.0%  | Mutual Funds (h) – 6.0%  | Mutual Funds (h) – 6.0%  |
| Money Market Funds – 6.0% | Money Market Funds – 6.0% |  |
| MFS Institutional Money Market Portfolio, 3.71% (v)  | 42577899 | &nbsp;&nbsp;&nbsp; $42577900 |
| Collateral for Securities Loaned – 0.7%  | Collateral for Securities Loaned – 0.7%  | Collateral for Securities Loaned – 0.7%  |
| JPMorgan U.S. Government Money Market Fund - Class IM Shares, 3.6% (j)  | 5276744 | &nbsp;&nbsp;&nbsp; $5276744 |
| Other Assets, Less Liabilities – (1.6)% |  | &nbsp;&nbsp;&nbsp; (11426524)<br>|
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | &nbsp;&nbsp; **$707781189** |

---

&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 $42,577,900 and $676,629,813, respectively.

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

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

&nbsp;&nbsp;&nbsp;&nbsp;(u) The security was valued using significant unobservable inputs and is considered level
 3 under the fair value hierarchy.

&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: <br> ADR American Depositary Receipt <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**

3/31/26 (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. 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

------

*Supplemental Information (unaudited) – continued*

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 March 31, 2026 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; $612534420 | &nbsp;&nbsp;&nbsp; $0 | &nbsp;&nbsp;&nbsp; $— | &nbsp;&nbsp;&nbsp; $612534420 |
| &nbsp;&nbsp;&nbsp; Canada | &nbsp;&nbsp;&nbsp; 18790908 | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; 18790908 |
| &nbsp;&nbsp;&nbsp; United Kingdom | &nbsp;&nbsp;&nbsp; 7722586 | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; 7722586 |
| &nbsp;&nbsp;&nbsp; Australia | &nbsp;&nbsp;&nbsp; 6942097 | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; 6942097 |
| &nbsp;&nbsp;&nbsp; Denmark | &nbsp;&nbsp;&nbsp; 6719401 | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; 6719401 |
| &nbsp;&nbsp;&nbsp; Germany | &nbsp;&nbsp;&nbsp; 6086227 | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; 6086227 |
| &nbsp;&nbsp;&nbsp; Switzerland | &nbsp;&nbsp;&nbsp; 5632207 | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; 5632207 |
| &nbsp;&nbsp;&nbsp; Israel | &nbsp;&nbsp;&nbsp; 4178347 | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; 4178347 |
| &nbsp;&nbsp;&nbsp; China | &nbsp;&nbsp;&nbsp; 2746876 | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; 2746876 |
| &nbsp;&nbsp;&nbsp; Other Countries | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; 0 | &nbsp;&nbsp;&nbsp; 0 |
| Investment Companies | &nbsp;&nbsp;&nbsp; 47854644 | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp; 47854644 |
| Total | &nbsp;&nbsp;&nbsp; $719207713 | &nbsp;&nbsp;&nbsp; $0 | &nbsp;&nbsp;&nbsp; $0 | &nbsp;&nbsp;&nbsp; $719207713 |

---

For further information regarding security characteristics, see the Portfolio of Investments. At March 31, 2026, the fund held one level 3

security valued at $0, which was also held and valued at $0 at December 31, 2025.

**(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. The following were affiliated issuers for the period ended March 31, 2026:

&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; $40102578 | &nbsp;&nbsp; $76943019 | &nbsp;&nbsp; $74461279 | &nbsp;&nbsp; $(803)<br>| &nbsp;&nbsp; $(5615)<br>| &nbsp;&nbsp; $42577900<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; $305098 | &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 New Discovery Series

- **b. EDGAR series identifier (if any):** S000002680

- **c. LEI of Series:** UL64BH8MFVUS63PN5829

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

- **a. Date of fiscal year-end:** 2026-12-31

- **b. Date as of which information is reported:** 2026-03-31

**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:** $713903379.22

**Total Liabilities:** $5534648.35

**Net Assets:** $708368730.87

**Cash Not Reported:** $98.68

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000007329 | 4.17%                | 0.12%                | -5.96%               |
| Class ID C000007330 | 4.21%                | 0.16%                | -6.02%               |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $2617858.76              | $28626327.34                               |
| Month 2  | $-4736322.93             | $6304052.96                                |
| Month 3  | $1871042.21              | $-47265020.57                              |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Absci Corp                                   | Absci Corp                                   | CUSIP: 00091E109<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    451688 | NS      | $1355064.00   | 0.19%             |  |  |  | No            |                  1 | On Loan: No      |
| Adaptive Biotechnologies Corp                | Adaptive Biotechnologies Corp                | CUSIP: 00650F109<br>LEI: 549300ZTF7OT1FW66Q96 | Long             | EC               | CORP              | US        |    283420 | NS      | $3933869.60   | 0.56%             |  |  |  | No            |                  1 | On Loan: No      |
| Covista Inc                                  | Covista Inc                                  | CUSIP: 00737L103<br>LEI: 549300Z467EZLMODV621 | Long             | EC               | CORP              | US        |     43957 | NS      | $5066044.25   | 0.72%             |  |  |  | No            |                  1 | On Loan: No      |
| Advanced Drainage Systems Inc                | Advanced Drainage Systems Inc                | CUSIP: 00790R104<br>LEI: 6QQTOZ5MF5DHM7K92I60 | Long             | EC               | CORP              | US        |     30141 | NS      | $4133235.33   | 0.58%             |  |  |  | No            |                  1 | On Loan: No      |
| Advanced Energy Industries Inc               | Advanced Energy Industries Inc               | CUSIP: 007973100<br>LEI: 549300756XI3QLFT2U27 | Long             | EC               | CORP              | US        |     55529 | NS      | $17919763.59  | 2.53%             |  |  |  | No            |                  1 | On Loan: No      |
| Alkami Technology Inc                        | Alkami Technology Inc                        | CUSIP: 01644J108<br>LEI: 254900FCNYU4HNEV9L47 | Long             | EC               | CORP              | US        |    332697 | NS      | $5213361.99   | 0.74%             |  |  |  | No            |                  1 | On Loan: No      |
| Amprius Technologies Inc                     | Amprius Technologies Inc                     | CUSIP: 03214Q108<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    538534 | NS      | $9079683.24   | 1.28%             |  |  |  | No            |                  1 | On Loan: No      |
| Annexon Inc                                  | Annexon Inc                                  | CUSIP: 03589W102<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    232809 | NS      | $1289761.86   | 0.18%             |  |  |  | No            |                  1 | On Loan: No      |
| Antero Resources Corp                        | Antero Resources Corp                        | CUSIP: 03674X106<br>LEI: APVBKPOULHUX7YZLKU17 | Long             | EC               | CORP              | US        |    138438 | NS      | $5875308.72   | 0.83%             |  |  |  | No            |                  1 | On Loan: No      |
| Ascendis Pharma A/S                          | Ascendis Pharma A/S                          | CUSIP: 04351P101<br>LEI: 549300B66JN3W3J8GH73 | Long             | EC               | CORP              | DK        |     29377 | NS      | $6719401.21   | 0.95%             |  |  |  | No            |                  1 | On Loan: No      |
| AtriCure Inc                                 | AtriCure Inc                                 | CUSIP: 04963C209<br>LEI: 254900B2I6GPHK2EXM59 | Long             | EC               | CORP              | US        |    123165 | NS      | $3513897.45   | 0.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Beta Technologies Inc                        | Beta Technologies Inc                        | CUSIP: 086921103<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     59576 | NS      | $875767.20    | 0.12%             |  |  |  | No            |                  1 | On Loan: No      |
| Billiontoone Inc                             | Billiontoone Inc                             | CUSIP: 090168105<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     18955 | NS      | $1496307.70   | 0.21%             |  |  |  | No            |                  1 | On Loan: —       |
| BioLife Solutions Inc                        | BioLife Solutions Inc                        | CUSIP: 09062W204<br>LEI: 549300G2IVCMC2TJDW72 | Long             | EC               | CORP              | US        |    305049 | NS      | $5820334.92   | 0.82%             |  |  |  | No            |                  1 | On Loan: No      |
| Bio-Techne Corp                              | Bio-Techne Corp                              | CUSIP: 09073M104<br>LEI: 54930073RLKQ51TILZ35 | Long             | EC               | CORP              | US        |    245517 | NS      | $12830718.42  | 1.81%             |  |  |  | No            |                  1 | On Loan: No      |
| Black Rock Coffee Bar Inc                    | Black Rock Coffee Bar Inc                    | CUSIP: 092244102<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    174977 | NS      | $2260702.84   | 0.32%             |  |  |  | No            |                  1 | On Loan: No      |
| Bloom Energy Corp                            | Bloom Energy Corp                            | CUSIP: 093712107<br>LEI: 549300XB5J9BFW5JXV97 | Long             | EC               | CORP              | US        |     58075 | NS      | $7868581.75   | 1.11%             |  |  |  | No            |                  1 | On Loan: No      |
| CONTRA BLUEPRINT MEDIC                       | CONTRA BLUEPRINT MEDIC                       | CUSIP: 096CVR048<br>LEI: 5299004CC60O9T5HVM83 | N/A              | DE               |  | US        |     13985 | NS      | $0.00         | 0.00%             |  |  |  | No            |                  3 | On Loan: No      |
| Box Inc                                      | Box Inc                                      | CUSIP: 10316T104<br>LEI: 549300KQUCPD8687YS68 | Long             | EC               | CORP              | US        |    301037 | NS      | $7116514.68   | 1.00%             |  |  |  | No            |                  1 | On Loan: No      |
| Azenta Inc                                   | Azenta Inc                                   | CUSIP: 114340102<br>LEI: 35ZN6X1ANPH25YN32Y17 | Long             | EC               | CORP              | US        |    270096 | NS      | $5707128.48   | 0.81%             |  |  |  | No            |                  1 | On Loan: No      |
| Brunswick Corp/DE                            | Brunswick Corp/DE                            | CUSIP: 117043109<br>LEI: YM4O38W15AX4YLLQKU27 | Long             | EC               | CORP              | US        |     73414 | NS      | $5341602.64   | 0.75%             |  |  |  | No            |                  1 | On Loan: No      |
| CCC Intelligent Solutions Holdings Inc       | CCC Intelligent Solutions Holdings Inc       | CUSIP: 12510Q100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |   1181274 | NS      | $7087644.00   | 1.00%             |  |  |  | No            |                  1 | On Loan: No      |
| CACI International Inc                       | CACI International Inc                       | CUSIP: 127190304<br>LEI: SYRPI2D1O9WRTS2WX210 | Long             | EC               | CORP              | US        |     21982 | NS      | $11955350.34  | 1.69%             |  |  |  | No            |                  1 | On Loan: No      |
| Caris Life Sciences Inc                      | Caris Life Sciences Inc                      | CUSIP: 142152107<br>LEI: 549300LX5LO78M5VPY43 | Long             | EC               | CORP              | US        |     63553 | NS      | $1136327.64   | 0.16%             |  |  |  | No            |                  1 | On Loan: No      |
| Ceribell Inc                                 | Ceribell Inc                                 | CUSIP: 15678C102<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    130477 | NS      | $2391643.41   | 0.34%             |  |  |  | No            |                  1 | On Loan: No      |
| CG oncology Inc                              | CG oncology Inc                              | CUSIP: 156944100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     36262 | NS      | $2454212.16   | 0.35%             |  |  |  | No            |                  1 | On Loan: No      |
| Charles River Laboratories International Inc | Charles River Laboratories International Inc | CUSIP: 159864107<br>LEI: 549300BSQ0R4UZ5KX287 | Long             | EC               | CORP              | US        |     66861 | NS      | $11533522.50  | 1.63%             |  |  |  | No            |                  1 | On Loan: No      |
| Chefs' Warehouse Inc/The                     | Chefs' Warehouse Inc/The                     | CUSIP: 163086101<br>LEI: 549300JYEDC8C547E980 | Long             | EC               | CORP              | US        |    168483 | NS      | $10016314.35  | 1.41%             |  |  |  | No            |                  1 | On Loan: No      |
| Cogent Biosciences Inc                       | Cogent Biosciences Inc                       | CUSIP: 19240Q201<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    112398 | NS      | $4326199.02   | 0.61%             |  |  |  | No            |                  1 | On Loan: No      |
| Collegium Pharmaceutical Inc                 | Collegium Pharmaceutical Inc                 | CUSIP: 19459J104<br>LEI: 54930049FXZMTLW8D496 | Long             | EC               | CORP              | US        |    211180 | NS      | $6983722.60   | 0.99%             |  |  |  | No            |                  1 | On Loan: No      |
| Columbia Sportswear Co                       | Columbia Sportswear Co                       | CUSIP: 198516106<br>LEI: 549300OTMCIEUXAH5Z60 | Long             | EC               | CORP              | US        |     81312 | NS      | $4456710.72   | 0.63%             |  |  |  | No            |                  1 | On Loan: No      |
| Corsair Gaming Inc                           | Corsair Gaming Inc                           | CUSIP: 22041X102<br>LEI: 549300Y7YT18L8G0H525 | Long             | EC               | CORP              | US        |    603476 | NS      | $3349291.80   | 0.47%             |  |  |  | No            |                  1 | On Loan: No      |
| Crane Co                                     | Crane Co                                     | CUSIP: 224408104<br>LEI: 5493000CQRQOTHUODL75 | Long             | EC               | CORP              | US        |     52863 | NS      | $9039573.00   | 1.28%             |  |  |  | No            |                  1 | On Loan: No      |
| Cytokinetics Inc                             | Cytokinetics Inc                             | CUSIP: 23282W605<br>LEI: 549300BE5DY1HW7IHA64 | Long             | EC               | CORP              | US        |     73064 | NS      | $4815648.24   | 0.68%             |  |  |  | No            |                  1 | On Loan: No      |
| Dutch Bros Inc                               | Dutch Bros Inc                               | CUSIP: 26701L100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    115575 | NS      | $5855029.50   | 0.83%             |  |  |  | No            |                  1 | On Loan: No      |
| Element Solutions Inc                        | Element Solutions Inc                        | CUSIP: 28618M106<br>LEI: 549300FLGN6P5CU20J91 | Long             | EC               | CORP              | US        |    333090 | NS      | $11371692.60  | 1.61%             |  |  |  | No            |                  1 | On Loan: No      |
| Finning International Inc                    | Finning International Inc                    | CUSIP: 318071404<br>LEI: 549300QLDCP11KB6XW55 | Long             | EC               | CORP              | CA        |    114041 | NS      | $7056753.13   | 1.00%             |  |  |  | No            |                  1 | On Loan: No      |
| Flowserve Corp                               | Flowserve Corp                               | CUSIP: 34354P105<br>LEI: 6Y0GK87T6V7NJKZJVM41 | Long             | EC               | CORP              | US        |    129545 | NS      | $9522852.95   | 1.34%             |  |  |  | No            |                  1 | On Loan: No      |
| FormFactor Inc                               | FormFactor Inc                               | CUSIP: 346375108<br>LEI: 549300YCEEO6SZD1ZR61 | Long             | EC               | CORP              | US        |    103682 | NS      | $10056117.18  | 1.42%             |  |  |  | No            |                  1 | On Loan: No      |
| GFL Environmental Inc                        | GFL Environmental Inc                        | CUSIP: 36168Q104<br>LEI: 894500E7NLBY9VZRT696 | Long             | EC               | CORP              | CA        |    104229 | NS      | $4348433.88   | 0.61%             |  |  |  | No            |                  1 | On Loan: No      |
| GCM Grosvenor Inc                            | GCM Grosvenor Inc                            | CUSIP: 36831E108<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    338106 | NS      | $3313438.80   | 0.47%             |  |  |  | No            |                  1 | On Loan: No      |
| Globus Medical Inc                           | Globus Medical Inc                           | CUSIP: 379577208<br>LEI: 5299003M2P4CIK0RF205 | Long             | EC               | CORP              | US        |     62172 | NS      | $5356739.52   | 0.76%             |  |  |  | No            |                  1 | On Loan: No      |
| Guardant Health Inc                          | Guardant Health Inc                          | CUSIP: 40131M109<br>LEI: 254900M8C3E5VC8BR186 | Long             | EC               | CORP              | US        |     62028 | NS      | $5729526.36   | 0.81%             |  |  |  | No            |                  1 | On Loan: No      |
| Hamilton Lane Inc                            | Hamilton Lane Inc                            | CUSIP: 407497106<br>LEI: 5493006OKN3V1NORM833 | Long             | EC               | CORP              | US        |     39657 | NS      | $3941905.80   | 0.56%             |  |  |  | No            |                  1 | On Loan: No      |
| Harmony Biosciences Holdings Inc             | Harmony Biosciences Holdings Inc             | CUSIP: 413197104<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     65422 | NS      | $1832470.22   | 0.26%             |  |  |  | No            |                  1 | On Loan: No      |
| IRhythm Holdings Inc                         | IRhythm Holdings Inc                         | CUSIP: 450056106<br>LEI: 549300FJI72RJGDQS384 | Long             | EC               | CORP              | US        |     39989 | NS      | $4719501.78   | 0.67%             |  |  |  | No            |                  1 | On Loan: No      |
| Immunocore Holdings PLC                      | Immunocore Holdings PLC                      | CUSIP: 45258D105<br>LEI: 213800IUE3DFS84BVN18 | Long             | EC               | CORP              | GB        |    102016 | NS      | $3075782.40   | 0.43%             |  |  |  | No            |                  1 | On Loan: No      |
| Independence Realty Trust Inc                | Independence Realty Trust Inc                | CUSIP: 45378A106<br>LEI: 549300Z3L8NU44NQEB29 | Long             | EC               | CORP              | US        |    231536 | NS      | $3447571.04   | 0.49%             |  |  |  | No            |                  1 | On Loan: No      |
| Integer Holdings Corp                        | Integer Holdings Corp                        | CUSIP: 45826H109<br>LEI: 549300SUD2ED5XG6X569 | Long             | EC               | CORP              | US        |    119533 | NS      | $10518904.00  | 1.48%             |  |  |  | No            |                  1 | On Loan: No      |
| Ionis Pharmaceuticals Inc                    | Ionis Pharmaceuticals Inc                    | CUSIP: 462222100<br>LEI: 549300SI4ZGLG0BLUZ92 | Long             | EC               | CORP              | US        |     94701 | NS      | $7111098.09   | 1.00%             |  |  |  | No            |                  1 | On Loan: No      |
| Karman Holdings Inc                          | Karman Holdings Inc                          | CUSIP: 485924104<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     48148 | NS      | $3854247.40   | 0.54%             |  |  |  | No            |                  1 | On Loan: No      |
| Knife River Corp                             | Knife River Corp                             | CUSIP: 498894104<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    115426 | NS      | $9424532.90   | 1.33%             |  |  |  | No            |                  1 | On Loan: No      |
| Knight-Swift Transportation Holdings Inc     | Knight-Swift Transportation Holdings Inc     | CUSIP: 499049104<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     82365 | NS      | $4742576.70   | 0.67%             |  |  |  | No            |                  1 | On Loan: No      |
| Kymera Therapeutics Inc                      | Kymera Therapeutics Inc                      | CUSIP: 501575104<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     48058 | NS      | $4002750.82   | 0.57%             |  |  |  | No            |                  1 | On Loan: No      |
| Legence Corp                                 | Legence Corp                                 | CUSIP: 52476L109<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    190272 | NS      | $10742757.12  | 1.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Legend Biotech Corp                          | Legend Biotech Corp                          | CUSIP: 52490G102<br>LEI: 254900EIUFZTW136H859 | Long             | EC               | CORP              | KY        |    151845 | NS      | $2746876.05   | 0.39%             |  |  |  | No            |                  1 | On Loan: No      |
| Leonardo DRS Inc                             | Leonardo DRS Inc                             | CUSIP: 52661A108<br>LEI: 549300HMMEWVG3PPQU18 | Long             | EC               | CORP              | US        |    234911 | NS      | $10458237.72  | 1.48%             |  |  |  | No            |                  1 | On Loan: No      |
| Ligand Pharmaceuticals Inc                   | Ligand Pharmaceuticals Inc                   | CUSIP: 53220K504<br>LEI: 5493008K7TB0IKP37H79 | Long             | EC               | CORP              | US        |     63950 | NS      | $12767617.50  | 1.80%             |  |  |  | No            |                  1 | On Loan: No      |
| Littelfuse Inc                               | Littelfuse Inc                               | CUSIP: 537008104<br>LEI: 549300MY7HLQFYTPCX75 | Long             | EC               | CORP              | US        |     34750 | NS      | $11792412.50  | 1.66%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Institutional Money Market Portfolio     | MFS Institutional Money Market Portfolio     | CUSIP: 55291X109<br>LEI: 5L2W638H85N8T1136O07 | Long             | EC               | RF                | US        |  42475866 | NS      | $42475865.99  | 6.00%             |  |  |  | No            |                  1 | On Loan: No      |
| MACOM Technology Solutions Holdings Inc      | MACOM Technology Solutions Holdings Inc      | CUSIP: 55405Y100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     52370 | NS      | $11629805.90  | 1.64%             |  |  |  | No            |                  1 | On Loan: No      |
| Matador Resources Co                         | Matador Resources Co                         | CUSIP: 576485205<br>LEI: 549300CI3Q2UUK5R4G79 | Long             | EC               | CORP              | US        |     74278 | NS      | $4692884.04   | 0.66%             |  |  |  | No            |                  1 | On Loan: No      |
| Merit Medical Systems Inc                    | Merit Medical Systems Inc                    | CUSIP: 589889104<br>LEI: 549300OYTY138SP2CE83 | Long             | EC               | CORP              | US        |    118616 | NS      | $8176200.88   | 1.15%             |  |  |  | No            |                  1 | On Loan: No      |
| Miami International Holdings Inc             | Miami International Holdings Inc             | CUSIP: 59356Q108<br>LEI: 254900TREUDBWGLAP788 | Long             | EC               | CORP              | US        |     71533 | NS      | $2784064.36   | 0.39%             |  |  |  | No            |                  1 | On Loan: No      |
| Mirion Technologies Inc                      | Mirion Technologies Inc                      | CUSIP: 60471A101<br>LEI: 549300BNTOWVWFNVTJ65 | Long             | EC               | CORP              | US        |    209079 | NS      | $3886778.61   | 0.55%             |  |  |  | No            |                  1 | On Loan: No      |
| Modine Manufacturing Co                      | Modine Manufacturing Co                      | CUSIP: 607828100<br>LEI: Z35SZFYJR8GZZRSIUU09 | Long             | EC               | CORP              | US        |     55903 | NS      | $12114739.13  | 1.71%             |  |  |  | No            |                  1 | On Loan: No      |
| Neurocrine Biosciences Inc                   | Neurocrine Biosciences Inc                   | CUSIP: 64125C109<br>LEI: 549300FECER0XBN49756 | Long             | EC               | CORP              | US        |     24788 | NS      | $3265571.12   | 0.46%             |  |  |  | No            |                  1 | On Loan: No      |
| Viper Energy Inc                             | Viper Energy Inc                             | CUSIP: 64361Q101<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    101598 | NS      | $4774090.02   | 0.67%             |  |  |  | No            |                  1 | On Loan: No      |
| nLight Inc                                   | nLight Inc                                   | CUSIP: 65487K100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    150023 | NS      | $8554311.46   | 1.21%             |  |  |  | No            |                  1 | On Loan: No      |
| Oceaneering International Inc                | Oceaneering International Inc                | CUSIP: 675232102<br>LEI: 549300L6PH74701W0R30 | Long             | EC               | CORP              | US        |    181153 | NS      | $6425496.91   | 0.91%             |  |  |  | No            |                  1 | On Loan: No      |
| Ollie's Bargain Outlet Holdings Inc          | Ollie's Bargain Outlet Holdings Inc          | CUSIP: 681116109<br>LEI: 529900YO5DSQCPEFDZ05 | Long             | EC               | CORP              | US        |     88093 | NS      | $8108079.72   | 1.14%             |  |  |  | No            |                  1 | On Loan: No      |
| Once Upon a Farm PBC                         | Once Upon a Farm PBC                         | CUSIP: 68237F108<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    158134 | NS      | $2585490.90   | 0.36%             |  |  |  | No            |                  1 | On Loan: —       |
| OPTINOSE INC                                 | OPTINOSE INC                                 | CUSIP: 68404V118<br>LEI: 549300CPBME7Z3CYMN16 | N/A              | DE               |  | US        |         2 | NS      | $0.41         | 0.00%             |  |  |  | No            |                  2 | On Loan: No      |
| PJT Partners Inc                             | PJT Partners Inc                             | CUSIP: 69343T107<br>LEI: 549300W3WBEQUBKYTN87 | Long             | EC               | CORP              | US        |     60109 | NS      | $8398429.48   | 1.19%             |  |  |  | No            |                  1 | On Loan: No      |
| Patrick Industries Inc                       | Patrick Industries Inc                       | CUSIP: 703343103<br>LEI: 549300FZ5ZTCCJ3Z5W14 | Long             | EC               | CORP              | US        |     51737 | NS      | $5746428.59   | 0.81%             |  |  |  | No            |                  1 | On Loan: No      |
| Permian Resources Corp                       | Permian Resources Corp                       | CUSIP: 71424F105<br>LEI: 529900NXUJPOKU7OJ511 | Long             | EC               | CORP              | US        |    208509 | NS      | $4445411.88   | 0.63%             |  |  |  | No            |                  1 | On Loan: No      |
| Primoris Services Corp                       | Primoris Services Corp                       | CUSIP: 74164F103<br>LEI: 549300UF3OLBJ8D5K349 | Long             | EC               | CORP              | US        |     73534 | NS      | $10518303.36  | 1.48%             |  |  |  | No            |                  1 | On Loan: No      |
| PROCEPT BioRobotics Corp                     | PROCEPT BioRobotics Corp                     | CUSIP: 74276L105<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     99851 | NS      | $2497273.51   | 0.35%             |  |  |  | No            |                  1 | On Loan: No      |
| Pulse Biosciences Inc                        | Pulse Biosciences Inc                        | CUSIP: 74587B101<br>LEI: 529900NJUBI06118FM73 | Long             | EC               | CORP              | US        |    122295 | NS      | $2640349.05   | 0.37%             |  |  |  | No            |                  1 | On Loan: No      |
| Q2 Holdings Inc                              | Q2 Holdings Inc                              | CUSIP: 74736L109<br>LEI: 549300M9RKR9DZXWS696 | Long             | EC               | CORP              | US        |    108287 | NS      | $5121975.10   | 0.72%             |  |  |  | No            |                  1 | On Loan: No      |
| SSR Mining Inc                               | SSR Mining Inc                               | CUSIP: 784730103<br>LEI: 549300JD2KR7AB9DYJ38 | Long             | EC               | CORP              | CA        |    251215 | NS      | $7385721.00   | 1.04%             |  |  |  | No            |                  1 | On Loan: No      |
| Schrodinger Inc/United States                | Schrodinger Inc/United States                | CUSIP: 80810D103<br>LEI: 984500044BAE4791E559 | Long             | EC               | CORP              | US        |    702349 | NS      | $7978684.64   | 1.13%             |  |  |  | No            |                  1 | On Loan: No      |
| GeneDx Holdings Corp                         | GeneDx Holdings Corp                         | CUSIP: 81663L200<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     77394 | NS      | $4970242.68   | 0.70%             |  |  |  | No            |                  1 | On Loan: No      |
| QXO Inc                                      | QXO Inc                                      | CUSIP: 82846H405<br>LEI: 549300HDXQWWCBOYXP31 | Long             | EC               | CORP              | US        |    776133 | NS      | $15072502.86  | 2.13%             |  |  |  | No            |                  1 | On Loan: No      |
| Simpson Manufacturing Co Inc                 | Simpson Manufacturing Co Inc                 | CUSIP: 829073105<br>LEI: 529900EJUNNL15LZ8056 | Long             | EC               | CORP              | US        |     41274 | NS      | $7083443.88   | 1.00%             |  |  |  | No            |                  1 | On Loan: No      |
| StandardAero Inc                             | StandardAero Inc                             | CUSIP: 85423L103<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    232279 | NS      | $5999766.57   | 0.85%             |  |  |  | No            |                  1 | On Loan: No      |
| TTM Technologies Inc                         | TTM Technologies Inc                         | CUSIP: 87305R109<br>LEI: 549300SC4BDOIS008048 | Long             | EC               | CORP              | US        |     95597 | NS      | $9313059.74   | 1.31%             |  |  |  | No            |                  1 | On Loan: No      |
| Tempus AI Inc                                | Tempus AI Inc                                | CUSIP: 88023B103<br>LEI: 2549009LA0KWRAGQBX50 | Long             | EC               | CORP              | US        |     31351 | NS      | $1417692.22   | 0.20%             |  |  |  | No            |                  1 | On Loan: No      |
| Terreno Realty Corp                          | Terreno Realty Corp                          | CUSIP: 88146M101<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    152040 | NS      | $9338296.80   | 1.32%             |  |  |  | No            |                  1 | On Loan: No      |
| TopBuild Corp                                | TopBuild Corp                                | CUSIP: 89055F103<br>LEI: 5493007YSKHOL4RWII46 | Long             | EC               | CORP              | US        |     27887 | NS      | $9796703.10   | 1.38%             |  |  |  | No            |                  1 | On Loan: No      |
| UFP Technologies Inc                         | UFP Technologies Inc                         | CUSIP: 902673102<br>LEI: 549300RJ8LY41HS70C91 | Long             | EC               | CORP              | US        |     31681 | NS      | $6133441.60   | 0.87%             |  |  |  | No            |                  1 | On Loan: No      |
| Ultragenyx Pharmaceutical Inc                | Ultragenyx Pharmaceutical Inc                | CUSIP: 90400D108<br>LEI: 529900EV44GVDN1DCX77 | Long             | EC               | CORP              | US        |     63320 | NS      | $1326554.00   | 0.19%             |  |  |  | No            |                  1 | On Loan: No      |
| US Foods Holding Corp                        | US Foods Holding Corp                        | CUSIP: 912008109<br>LEI: 549300UGOZSO64CFPR97 | Long             | EC               | CORP              | US        |     50456 | NS      | $4652547.76   | 0.66%             |  |  |  | No            |                  1 | On Loan: No      |
| Uranium Energy Corp                          | Uranium Energy Corp                          | CUSIP: 916896103<br>LEI: 549300VD69WD2USLIP04 | Long             | EC               | CORP              | US        |    399679 | NS      | $5395666.50   | 0.76%             |  |  |  | No            |                  1 | On Loan: No      |
| Visteon Corp                                 | Visteon Corp                                 | CUSIP: 92839U206<br>LEI: 549300MOVLYHRW4GGW78 | Long             | EC               | CORP              | US        |     47608 | NS      | $4337564.88   | 0.61%             |  |  |  | No            |                  1 | On Loan: No      |
| JP Morgan US Government Money Market Fund    | JP Morgan US Government Money Market Fund    | CUSIP: 4812C2270<br>LEI: 549300NQ5E5B7ZV4T516 | Long             | STIV             | RF                | US        |   5276744 | NS      | $5276743.60   | 0.74%             |  |  |  | No            |                  1 | On Loan: No      |
| Waystar Holding Corp                         | Waystar Holding Corp                         | CUSIP: 946784105<br>LEI: 529900QJLKXDYU36MH89 | Long             | EC               | CORP              | US        |    380698 | NS      | $9178628.78   | 1.30%             |  |  |  | No            |                  1 | On Loan: No      |
| WisdomTree Inc                               | WisdomTree Inc                               | CUSIP: 97717P104<br>LEI: 549300WIU8IS7UFO7871 | Long             | EC               | CORP              | US        |    355064 | NS      | $5169731.84   | 0.73%             |  |  |  | No            |                  1 | On Loan: No      |
| XPO Inc                                      | XPO Inc                                      | CUSIP: 983793100<br>LEI: 54930096DB9LCLPN7H13 | Long             | EC               | CORP              | US        |     47135 | NS      | $9170114.25   | 1.29%             |  |  |  | No            |                  1 | On Loan: No      |
| York Space Systems Inc                       | York Space Systems Inc                       | CUSIP: 987084100<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    129836 | NS      | $2878464.12   | 0.41%             |  |  |  | No            |                  1 | On Loan: —       |
| Genius Sports Ltd                            | Genius Sports Ltd                            | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | GG        |   1048940 | NS      | $4646804.20   | 0.66%             |  |  |  | No            |                  1 | On Loan: No      |
| James Hardie Industries PLC                  | James Hardie Industries PLC                  | CUSIP: 000000000<br>LEI: 635400NSGXKTVOO7JU45 | Long             | EC               | CORP              | IE        |    366531 | NS      | $6942097.14   | 0.98%             |  |  |  | No            |                  1 | On Loan: No      |
| Kiniksa Pharmaceuticals International Plc    | Kiniksa Pharmaceuticals International Plc    | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | GB        |    107710 | NS      | $5186236.50   | 0.73%             |  |  |  | No            |                  1 | On Loan: No      |
| nVent Electric PLC                           | nVent Electric PLC                           | CUSIP: 000000000<br>LEI: 254900LK60A9DK5W5N81 | Long             | EC               | CORP              | IE        |    112355 | NS      | $13289349.40  | 1.88%             |  |  |  | No            |                  1 | On Loan: No      |
| TechnipFMC PLC                               | TechnipFMC PLC                               | CUSIP: 000000000<br>LEI: 549300D5I93QWCJTCK36 | Long             | EC               | CORP              | GB        |    111622 | NS      | $7716428.86   | 1.09%             |  |  |  | No            |                  1 | On Loan: No      |
| Sportradar Group AG                          | Sportradar Group AG                          | CUSIP: 000000000<br>LEI: 549300H1P33YOAT7Z533 | Long             | EC               | CORP              | CH        |    336452 | NS      | $5632206.48   | 0.80%             |  |  |  | No            |                  1 | On Loan: No      |
| Birkenstock Holding Plc                      | Birkenstock Holding Plc                      | CUSIP: 000000000<br>LEI: 529900CQ8LQKQ7LIT631 | Long             | EC               | CORP              | JE        |    154225 | NS      | $5525881.75   | 0.78%             |  |  |  | No            |                  1 | On Loan: No      |
| JFrog Ltd                                    | JFrog Ltd                                    | CUSIP: 000000000<br>LEI: 2549002N8E00AY49G567 | Long             | EC               | CORP              | IL        |    185480 | NS      | $8704576.40   | 1.23%             |  |  |  | No            |                  1 | On Loan: No      |
| Wix.com Ltd                                  | Wix.com Ltd                                  | CUSIP: 000000000<br>LEI: 5493008P6N29Q1AG9464 | Long             | EC               | CORP              | IL        |     46390 | NS      | $4178347.30   | 0.59%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2026-04-29

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

**Signature:** James Byrne

**Name of Signer:** James Byrne

**Title:** Assistant Treasurer