# EDGAR Filing Document

**Accession Number:** 0000836249
**File Stem:** 0001133228-25-008510
**Filing Date:** 2025-8
**Character Count:** 3216
**Document Hash:** 7efb0eb4a71518fa82da0f34b5e4daca
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001133228-25-008510.hdr.sgml**: 20250818

**ACCESSION NUMBER**: 0001133228-25-008510

**CONFORMED SUBMISSION TYPE**: 497VPI

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250818

**DATE AS OF CHANGE**: 20250818

**EFFECTIVENESS DATE**: 20250818

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MASSACHUSETTS MUTUAL VARIABLE LIFE SEPARATE ACCOUNT I
- **CENTRAL INDEX KEY:** 0000836249

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

**FILING VALUES:**
- **FORM TYPE:** 497VPI
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-22557
- **FILM NUMBER:** 251226771

**BUSINESS ADDRESS:**
- **STREET 1:** 1295 STATE ST
- **STREET 2:** C/O MASSACHUSETTS MUTUAL LIFE INSURANCE
- **CITY:** SPRINGFIELD
- **STATE:** MA
- **ZIP:** 01111
- **BUSINESS PHONE:** (860)562-2418

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

## Series and Classes Contracts Data

### MASSACHUSETTS MUTUAL VARIABLE LIFE SEPARATE ACCOUNT I (Series ID: S000009841)

| Class ID   | Class Name                                 | Ticker Symbol   |
|:---|:---|:---|
| C000027261 | Strategic Group Variable Universal Life(R) |  |

**Supplement dated August 18, 2025**

**to the Prospectus, Initial Summary Prospectus, and Updating Summary Prospectus dated April 28, 2025, as supplemented, for:**

**Strategic Group Variable Universal Life<sup>®</sup>**

*Issued by Massachusetts Mutual Life Insurance Company*

**THIS SUPPLEMENT MUST BE READ IN CONJUNCTION WITH YOUR PROSPECTUS.**

**PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE.**

*Effective August 1, 2025, this supplement amends certain information in the above-referenced prospectuses ("Prospectuses"). The information in **Appendix A** of the Prospectuses for the **MFS<sup>®</sup> Research Series** is deleted and replaced with the following:* 

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| | | | | |
|:---|:---|:---|:---|:---|
| **Fund Type** | **Fund and Adviser/Sub-Adviser** | **Average Annual <br>Total Returns**<br> **(as of 12/31/2024)** | **Average Annual <br>Total Returns**<br> **(as of 12/31/2024)** | **Average Annual <br>Total Returns**<br> **(as of 12/31/2024)** |
| **Fund Type** | **Fund and Adviser/Sub-Adviser** | **1 Year** | **5 Year** | **10 Year** |
| Large Cap Blend | MFS<sup>®</sup> Research Series (Initial Class) <br>***Adviser:*** Massachusetts Financial Services Company <br>***Sub-Adviser:*** N/A<br> 0.74%<sup>(\*)</sup> | 18.87% | 11.88% | 11.66% |

---

---

| | |
|:---|:---|
| <sup>(\*)</sup> | This fund is subject to an expense reimbursement or fee waiver arrangement. As a result, this fund's annual expenses reflect temporary expense reductions. See the fund prospectus for additional information. |

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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 Service Center at (800) 548-0073, 8 a.m.**–**5 p.m. Eastern Time.

**For more information about the fund, read the fund prospectus. Prospectuses are available on our website at www.MassMutual.com.**

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