# EDGAR Filing Document

**Accession Number:** 0000353445
**File Stem:** 0001133228-26-006572
**Filing Date:** 2026-4
**Character Count:** 2945
**Document Hash:** afe067a9822b12b67ba0f5054cce3699
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001133228-26-006572.hdr.sgml**: 20260427

**ACCESSION NUMBER**: 0001133228-26-006572

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260427

**DATE AS OF CHANGE**: 20260427

**EFFECTIVENESS DATE**: 20260427

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MASSACHUSETTS MUTUAL VARIABLE ANNUITY SEPARATE ACCOUNT 1
- **CENTRAL INDEX KEY:** 0000353445

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-75412
- **FILM NUMBER:** 26897562

**BUSINESS ADDRESS:**
- **STREET 1:** 1295 STATE STREET
- **STREET 2:** M243
- **CITY:** SPRINGFIELD
- **STATE:** MA
- **ZIP:** 01111
- **BUSINESS PHONE:** 413-744-7723

**MAIL ADDRESS:**
- **STREET 1:** 1295 STATE STREET
- **STREET 2:** M243
- **CITY:** SPRINGFIELD
- **STATE:** MA
- **ZIP:** 01111

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MASSACHUSETTS MUTUAL VARIABLE ANNUITY FUND 4
- **DATE OF NAME CHANGE:** 19820808

## Series and Classes Contracts Data

### MASSACHUSETTS MUTUAL VARIABLE ANNUITY SEPARATE ACCOUNT 1 (Series ID: S000007818)

---

|  |  |
|:---|:---|
| Class Name   | Class ID   |
| Flex Annuity | C000021295 |

---

## Series and Classes Contracts Data

### MASSACHUSETTS MUTUAL VARIABLE ANNUITY SEPARATE ACCOUNT 1 (Series ID: S000007818)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000021295 | Flex Annuity |  |

**Supplement dated April 27, 2026**

**to the Prospectus dated May 1, 2003, as supplemented, for:**

**Flex Annuity (Non-Qualified)**

*Issued by Massachusetts Mutual Life Insurance Company*

**and to the Prospectus dated May 1, 2005, as supplemented, for:**

**Flex Annuity (Qualified)**<br> *Issued by Massachusetts Mutual Life Insurance Company*

 

**THIS SUPPLEMENT MUST BE READ IN CONJUNCTION WITH YOUR PROSPECTUS. <br> PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE.**

 

*This supplement amends certain information in the above-referenced Prospectuses:*

**Fund Name Changes**

Effective April 24, 2026, the following funds were renamed:

---

| | |
|:---|:---|
| **Old Fund Name** | **New Fund Name** |
| MML Blend Fund | MML VIP BlackRock<sup>®</sup> Balanced Fund |
| MML Equity Fund | MML VIP Franklin Templeton Equity Fund |
| MML Managed Bond Fund | MML VIP Barings Core Bond Fund |
| MML U.S. Government Money Market Fund | MML VIP Barings U.S. Government Money Market Fund |

---

If you have questions about this supplement, or other product questions, you may contact your registered representative, visit us online at www.MassMutual.com/contact-us, or call our Administrative Office at (800) 272-2216 (8 a.m.–8 p.m. Eastern Time).

**For more information about the funds, read each fund prospectus. Prospectuses are available by going to www.MassMutual.com.**

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