# EDGAR Filing Document

**Accession Number:** 0000719269
**File Stem:** 0000930413-25-001995
**Filing Date:** 2025-6
**Character Count:** 19475
**Document Hash:** 9cea0efd479fbbf04afaba36046ba8b9
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000930413-25-001995.hdr.sgml**: 20250618

**ACCESSION NUMBER**: 0000930413-25-001995

**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:** 251056141

**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
**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MFS VARIABLE INSURANCE TRUST III
- **CENTRAL INDEX KEY:** 0001065698

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-59093
- **FILM NUMBER:** 251056142

**BUSINESS ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
- **BUSINESS PHONE:** 617-954-5000

**MAIL ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** SUN CAPITAL ADVISERS TRUST
- **DATE OF NAME CHANGE:** 19980709
**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MFS VARIABLE INSURANCE TRUST II
- **CENTRAL INDEX KEY:** 0000719269

**ORGANIZATION NAME:**
- **EIN:** 046540044
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-83616
- **FILM NUMBER:** 251056143

**BUSINESS ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **STREET 2:** 21ST FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
- **BUSINESS PHONE:** 16179545839

**MAIL ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **STREET 2:** 21ST FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MFS SUN LIFE SERIES TRUST
- **DATE OF NAME CHANGE:** 19920703

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** COMPASS SERIES TRUST
- **DATE OF NAME CHANGE:** 19850325

## Series and Classes Contracts Data

### MFS Corporate Bond Portfolio (Series ID: S000002634)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007237 |
| Service Class | C000007238 |

---

### MFS Government Securities Portfolio (Series ID: S000002635)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007239 |
| Service Class | C000007240 |

---

### MFS High Yield Portfolio (Series ID: S000002636)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007241 |
| Service Class | C000007242 |

---

### MFS International Growth Portfolio (Series ID: S000002637)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007243 |
| Service Class | C000007244 |

---

### MFS International Intrinsic Value Portfolio (Series ID: S000002638)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007245 |
| Service Class | C000007246 |

---

### MFS Massachusetts Investors Growth Stock Portfolio (Series ID: S000002639)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007247 |
| Service Class | C000007248 |

---

### MFS Blended Research Core Equity Portfolio (Series ID: S000002640)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007249 |
| Service Class | C000007250 |

---

### MFS U.S. Government Money Market Portfolio (Series ID: S000002643)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007255 |
| Service Class | C000007256 |

---

### MFS Research International Portfolio (Series ID: S000002646)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007261 |
| Service Class | C000007262 |

---

### MFS Global Research Portfolio (Series ID: S000002647)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007263 |
| Service Class | C000007264 |

---

### MFS Income Portfolio (Series ID: S000002649)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007267 |
| Service Class | C000007268 |

---

### MFS Technology Portfolio (Series ID: S000002651)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007271 |
| Service Class | C000007272 |

---

### MFS Core Equity Portfolio (Series ID: S000002656)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007281 |
| Service Class | C000007282 |

---

### MFS Emerging Markets Equity Portfolio (Series ID: S000002658)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007285 |
| Service Class | C000007286 |

---

### MFS Global Governments Portfolio (Series ID: S000002659)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007287 |
| Service Class | C000007288 |

---

### MFS Global Growth Portfolio (Series ID: S000002660)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007289 |
| Service Class | C000007290 |

---

### MFS Global Tactical Allocation Portfolio (Series ID: S000002661)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007291 |
| Service Class | C000007292 |

---

### MFS Total Return Bond Series (Series ID: S000002666)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007302 |
| Service Class | C000007303 |

---

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

---

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

---

### MFS Total Return Series (Series ID: S000002670)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007310 |
| Service Class | C000007311 |

---

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

---

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

---

### MFS Value Series (Series ID: S000002672)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007314 |
| Service Class | C000007315 |

---

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

---

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

---

### MFS Global Equity Series (Series ID: S000002674)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007318 |
| Service Class | C000007319 |

---

### MFS Investors Trust Series (Series ID: S000002677)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007324 |
| Service Class | C000007325 |

---

### MFS Mid Cap Growth Series (Series ID: S000002678)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000007326 |
| Service Class | C000007327 |

---

### MFS New Discovery Series (Series ID: S000002680)

---

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

---

### MFS Global Real Estate Portfolio (Series ID: S000008069)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000021901 |
| Service Class | C000021902 |

---

### MFS Blended Research Small Cap Equity Portfolio (Series ID: S000008071)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000021905 |
| Service Class | C000021906 |

---

### MFS Mid Cap Value Portfolio (Series ID: S000018843)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000052149 |
| Service Class | C000052150 |

---

### MFS Limited Maturity Portfolio (Series ID: S000018844)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000052151 |
| Service Class | C000052152 |

---

### MFS Conservative Allocation Portfolio (Series ID: S000023371)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000068440 |
| Service Class | C000068441 |

---

### MFS Moderate Allocation Portfolio (Series ID: S000023372)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000068442 |
| Service Class | C000068443 |

---

### MFS Growth Allocation Portfolio (Series ID: S000023373)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000068444 |
| Service Class | C000068445 |

---

### MFS New Discovery Value Portfolio (Series ID: S000023374)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000068446 |
| Service Class | C000068447 |

---

### MFS Inflation-Adjusted Bond Portfolio (Series ID: S000023378)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| Initial Class | C000068454 |
| Service Class | C000068455 |

---

## Series and Classes Contracts Data

### MFS Corporate Bond Portfolio (Series ID: S000002634)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007237 | Initial Class |  |
| C000007238 | Service Class |  |

### MFS Government Securities Portfolio (Series ID: S000002635)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007239 | Initial Class |  |
| C000007240 | Service Class |  |

### MFS High Yield Portfolio (Series ID: S000002636)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007241 | Initial Class |  |
| C000007242 | Service Class |  |

### MFS International Growth Portfolio (Series ID: S000002637)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007243 | Initial Class |  |
| C000007244 | Service Class |  |

### MFS International Intrinsic Value Portfolio (Series ID: S000002638)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007245 | Initial Class |  |
| C000007246 | Service Class |  |

### MFS Massachusetts Investors Growth Stock Portfolio (Series ID: S000002639)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007247 | Initial Class |  |
| C000007248 | Service Class |  |

### MFS Blended Research Core Equity Portfolio (Series ID: S000002640)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007249 | Initial Class |  |
| C000007250 | Service Class |  |

### MFS U.S. Government Money Market Portfolio (Series ID: S000002643)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007255 | Initial Class |  |
| C000007256 | Service Class |  |

### MFS Research International Portfolio (Series ID: S000002646)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007261 | Initial Class |  |
| C000007262 | Service Class |  |

### MFS Global Research Portfolio (Series ID: S000002647)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007263 | Initial Class |  |
| C000007264 | Service Class |  |

### MFS Income Portfolio (Series ID: S000002649)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007267 | Initial Class |  |
| C000007268 | Service Class |  |

### MFS Technology Portfolio (Series ID: S000002651)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007271 | Initial Class |  |
| C000007272 | Service Class |  |

### MFS Core Equity Portfolio (Series ID: S000002656)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007281 | Initial Class |  |
| C000007282 | Service Class |  |

### MFS Emerging Markets Equity Portfolio (Series ID: S000002658)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007285 | Initial Class |  |
| C000007286 | Service Class |  |

### MFS Global Governments Portfolio (Series ID: S000002659)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007287 | Initial Class |  |
| C000007288 | Service Class |  |

### MFS Global Growth Portfolio (Series ID: S000002660)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007289 | Initial Class |  |
| C000007290 | Service Class |  |

### MFS Global Tactical Allocation Portfolio (Series ID: S000002661)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007291 | Initial Class |  |
| C000007292 | Service Class |  |

### MFS Total Return Bond Series (Series ID: S000002666)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007302 | Initial Class |  |
| C000007303 | Service Class |  |

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

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

### MFS Total Return Series (Series ID: S000002670)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007310 | Initial Class |  |
| C000007311 | Service Class |  |

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

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

### MFS Value Series (Series ID: S000002672)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007314 | Initial Class |  |
| C000007315 | Service Class |  |

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

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

### MFS Global Equity Series (Series ID: S000002674)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007318 | Initial Class |  |
| C000007319 | Service Class |  |

### MFS Investors Trust Series (Series ID: S000002677)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007324 | Initial Class |  |
| C000007325 | Service Class |  |

### MFS Mid Cap Growth Series (Series ID: S000002678)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000007326 | Initial Class |  |
| C000007327 | Service Class |  |

### MFS New Discovery Series (Series ID: S000002680)

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

### MFS Global Real Estate Portfolio (Series ID: S000008069)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000021901 | Initial Class |  |
| C000021902 | Service Class |  |

### MFS Blended Research Small Cap Equity Portfolio (Series ID: S000008071)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000021905 | Initial Class |  |
| C000021906 | Service Class |  |

### MFS Mid Cap Value Portfolio (Series ID: S000018843)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000052149 | Initial Class |  |
| C000052150 | Service Class |  |

### MFS Limited Maturity Portfolio (Series ID: S000018844)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000052151 | Initial Class |  |
| C000052152 | Service Class |  |

### MFS Conservative Allocation Portfolio (Series ID: S000023371)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000068440 | Initial Class |  |
| C000068441 | Service Class |  |

### MFS Moderate Allocation Portfolio (Series ID: S000023372)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000068442 | Initial Class |  |
| C000068443 | Service Class |  |

### MFS Growth Allocation Portfolio (Series ID: S000023373)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000068444 | Initial Class |  |
| C000068445 | Service Class |  |

### MFS New Discovery Value Portfolio (Series ID: S000023374)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000068446 | Initial Class |  |
| C000068447 | Service Class |  |

### MFS Inflation-Adjusted Bond Portfolio (Series ID: S000023378)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000068454 | Initial Class |  |
| C000068455 | Service Class |  |

![](img_46291a8ec5894f1.jpg)

SUPPLEMENT TO THE STATEMENT OF ADDITIONAL INFORMATION

*The date of this supplement is June 18, 2025.*

## For the MFS <sup>®</sup> Funds listed below:

---

| | |
|:---|:---|
| MFS<sup>®</sup> BLENDED RESEARCH<sup>®</sup> CORE EQUITY PORTFOLIO<br>MFS<sup>®</sup> BLENDED RESEARCH<sup>®</sup> SMALL CAP EQUITY PORTFOLIO <br>MFS<sup>®</sup> CONSERVATIVE ALLOCATION PORTFOLIO<br>MFS<sup>®</sup> CORE EQUITY PORTFOLIO<br>MFS<sup>®</sup> CORPORATE BOND PORTFOLIO<br>MFS<sup>®</sup> EMERGING MARKETS EQUITY PORTFOLIO<br>MFS<sup>®</sup> GLOBAL EQUITY SERIES<br>MFS<sup>®</sup> GLOBAL GOVERNMENTS PORTFOLIO<br>MFS<sup>®</sup> GLOBAL GROWTH PORTFOLIO<br>MFS<sup>®</sup> GLOBAL REAL ESTATE PORTFOLIO<br>MFS<sup>®</sup> GLOBAL RESEARCH PORTFOLIO<br>MFS<sup>®</sup> GLOBAL TACTICAL ALLOCATION PORTFOLIO<br>MFS<sup>®</sup> GOVERNMENT SECURITIES PORTFOLIO<br>MFS<sup>®</sup> GROWTH ALLOCATION PORTFOLIO<br>MFS<sup>®</sup> GROWTH SERIES<br>MFS<sup>®</sup> HIGH YIELD PORTFOLIO<br>MFS<sup>®</sup> INCOME PORTFOLIO<br>MFS<sup>®</sup> INFLATION-ADJUSTED BOND PORTFOLIO | MFS<sup>®</sup> INTERNATIONAL GROWTH PORTFOLIO<br>MFS<sup>®</sup> INTERNATIONAL INTRINSIC VALUE PORTFOLIO<br>MFS<sup>®</sup> INVESTORS TRUST SERIES<br>MFS<sup>®</sup> LIMITED MATURITY PORTFOLIO<br>MFS<sup>®</sup> MASSACHUSETTS INVESTORS GROWTH STOCK PORTFOLIO<br>MFS<sup>®</sup> MID CAP GROWTH SERIES<br>MFS<sup>®</sup> MID CAP VALUE PORTFOLIO<br>MFS<sup>®</sup> MODERATE ALLOCATION PORTFOLIO<br>MFS<sup>®</sup> NEW DISCOVERY SERIES<br>MFS<sup>®</sup> NEW DISCOVERY VALUE PORTFOLIO<br>MFS<sup>®</sup> RESEARCH INTERNATIONAL PORTFOLIO<br>MFS<sup>®</sup> RESEARCH SERIES<br>MFS<sup>®</sup> TECHNOLOGY PORTFOLIO<br>MFS<sup>®</sup> TOTAL RETURN BOND SERIES<br>MFS<sup>®</sup> TOTAL RETURN SERIES<br>MFS<sup>®</sup> U.S. GOVERNMENT MONEY MARKET PORTFOLIO<br>MFS<sup>®</sup> UTILITIES SERIES<br>MFS<sup>®</sup> VALUE SERIES |

---

**Effective immediately, the first paragraph in the sub-section entitled "Organization of the Fund" under the main heading entitled "MANAGEMENT OF THE FUND" is restated as follows:**

MFS Global Equity Series, MFS Growth Series, MFS Investors Trust Series, MFS Mid Cap Growth Series, MFS New Discovery Series, MFS Research Series, MFS Total Return Bond Series, MFS Total Return Series, MFS Utilities Series, and MFS Value Series, each an open-end investment company, are series of MFS Variable Insurance Trust, a Massachusetts business trust organized in 1994. MFS Global Equity Series, MFS Growth Series, MFS Investors Trust Series, MFS Mid Cap Growth Series, MFS New Discovery Series, MFS Research Series, MFS Total Return Bond Series, MFS Total Return Series, MFS Utilities Series, and MFS Value Series are diversified funds. MFS Growth Series is a non-diversified fund. At a special shareholder meeting held on June 18, 2025, shareholders of MFS Growth Series approved a proposal to reclassify MFS Growth Series from diversified to non-diversified.

VIT-SAI-COMBINED-SUP-I-061825

------