# EDGAR Filing Document

**Accession Number:** 0000921025
**File Stem:** 0001133228-26-006578
**Filing Date:** 2026-4
**Character Count:** 2989
**Document Hash:** 1bee5e6abab0a7ba1f8d9207764c82cf
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001133228-26-006578.hdr.sgml**: 20260427

**ACCESSION NUMBER**: 0001133228-26-006578

**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:** MML BAY STATE VARIABLE ANNUITY SEPARATE ACCOUNT 1
- **CENTRAL INDEX KEY:** 0000921025

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

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-76920
- **FILM NUMBER:** 26897594

**BUSINESS ADDRESS:**
- **STREET 1:** 100 BRIGHT MEADOW BOULEVARD
- **CITY:** ENFIELD
- **STATE:** CT
- **ZIP:** 06082
- **BUSINESS PHONE:** 413-744-7723

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

## Series and Classes Contracts Data

### MML BAY STATE VARIABLE ANNUITY SEPARATE ACCOUNT 1 (Series ID: S000007816)

---

|  |  |
|:---|:---|
| Class Name | Class ID   |
| LifeTrust  | C000021292 |

---

## Series and Classes Contracts Data

### MML BAY STATE VARIABLE ANNUITY SEPARATE ACCOUNT 1 (Series ID: S000007816)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000021292 | LifeTrust    |  |

**Supplement dated April 27, 2026**

**to the Prospectuses dated May 1, 2004, as supplemented, for:**

**LifeTrust**

*Issued by Massachusetts Mutual Life Insurance Company in CA, CT, MA, ME, NY, TX, and VA,*

*and MML Bay State Life Insurance Company in all other states*

**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 Fundamental Equity Fund</sup> | MML VIP Invesco Main Street Equity Fund |
| MML Global Fund | MML VIP Invesco Global Fund |
| MML Invesco Discovery Large Cap Fund | MML VIP Invesco Discovery Large Cap Fund |
| MML Invesco Discovery Mid Cap Fund | MML VIP Invesco Discovery Mid Cap 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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