# EDGAR Filing Document

**Accession Number:** 0000918571
**File Stem:** 0000930413-25-001994
**Filing Date:** 2025-6
**Character Count:** 2738
**Document Hash:** 0813dfada532e7fb518bb0fd67bf13e9
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000930413-25-001994.hdr.sgml**: 20250618

**ACCESSION NUMBER**: 0000930413-25-001994

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20250618

**DATE AS OF CHANGE**: 20250618

**EFFECTIVENESS DATE**: 20250618

**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:** 251056137

**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 Growth Series (Series ID: S000002673)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007316 |
| Service Class | C000007317 |

---

## Series and Classes Contracts Data

### MFS Growth Series (Series ID: S000002673)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007316 | Initial Class |  |
| C000007317 | Service Class |  |

![](img_4ea6c6ea6cb34f1.jpg)

SUPPLEMENT TO THE PROSPECTUS

*Supplement dated June 18, 2025, to the Prospectus dated April 30, 2025.*

## MFS <sup>®</sup> Growth Series
**Effective immediately, the sixth paragraph in the sub-sections entitled "Principal Investment Strategies" under the main headings entitled "Summary of Key Information" and "Investment Objective, Strategies, and Risks" is restated in its entirety as follows:**

At a special shareholder meeting held on June 18, 2025, shareholders of the fund approved a proposal to reclassify the fund from diversified to non-diversified. This means that MFS may invest a significant percentage of the fund's assets in a single issuer or a small number of issuers.

**Effective immediately, the second paragraph of the risk entitled "Focus Risk" in the sub-sections entitled "Principal Risks" under the main headings entitled "Summary of Key Information" and "Investment Objective, Strategies, and Risks" is deleted in its entirety and replaced with the following new risk:**

**Non-Diversification Risk:** Because MFS may invest a significant percentage of the fund's assets in a single issuer or small number of issuers, the fund's performance could be closely tied to the value of that one issuer or issuers, and could be more volatile than the performance of diversified funds.

VEG-SUP-I-061825

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