# EDGAR Filing Document

**Accession Number:** 0000918571
**File Stem:** 0000912938-25-000245
**Filing Date:** 2025-12
**Character Count:** 1949
**Document Hash:** f5c73a10069596faf98dd9a452e342ec
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000912938-25-000245.hdr.sgml**: 20251201

**ACCESSION NUMBER**: 0000912938-25-000245

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20251201

**DATE AS OF CHANGE**: 20251201

**EFFECTIVENESS DATE**: 20251201

**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:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-74668
- **FILM NUMBER:** 251537370

**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 Utilities Series (Series ID: S000002671)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007312 |
| Service Class | C000007313 |

---

## Series and Classes Contracts Data

### MFS Utilities Series (Series ID: S000002671)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007312 | Initial Class |  |
| C000007313 | Service Class |  |

![](img_aed2a0f812c24f1.jpg)

SUPPLEMENT TO THE PROSPECTUS

*Supplement dated December 1, 2025, to the Prospectus dated April 30, 2025.*

## MFS <sup>®</sup> Utilities Series
**Effective immediately, the following is added after the tables in the sub-sections entitled "Portfolio Manager(s)" under the main headings entitled "Summary of Key Information" and "Management of the Fund":**

Claud Davis has announced his intention to retire effective September 30, 2026, and he will no longer be a portfolio manager of the fund as of that date.

VUF-SUP-I-120125

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