Massachusetts Mutual Variable Life Separate Account I

12/15/2025 | Press release | Distributed by Public on 12/15/2025 10:09

Summary Prospectus for New Investors by Investment Company (Form 497VPI)

Supplement dated December 15, 2025

to the Prospectus, Initial Summary Prospectus, and Updating Summary Prospectus,

each dated April 28, 2025, as supplemented, for:

Apex VUL®

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 December 15, 2025, this Supplement amends certain information in the above-referenced Prospectuses:

1. The Annual Fee table in the Ongoing Fees and Expenses row of the Important Information You Should Consider About the Policy section of the Prospectus, Initial Summary Prospectus, and Updating Summary Prospectus is deleted and replaced with the following:
Annual Fee Minimum Maximum
Fund options (Fund fees and expenses) 0.12%(1) 1.18%(1)

(1) As a percentage of Fund assets.

2. The Annual Fund Operating Expenses table in the For Policies Issued After April 19, 2024 sub-section within the Fee Tables section of the Prospectus and the Additional Information About Fees section of the Initial Summary Prospectus is deleted and replaced with the following:
Annual Fund Operating Expenses Minimum Maximum
(expenses are deducted from Fund assets, including management fees, distribution, and/or 12b-1 fees, and other expenses) 0.12%(1) 1.18%(1)

(1) The Fund expenses used to prepare this table were provided to us by the Funds. We have not independently verified such information provided to us by Funds that are not affiliated with us.

3. The Defined Outcome Funds Risk sub-section of the Principal Risks section of the Prospectus is deleted.
4. The information pertaining to Vest U.S. Large Cap 10% Buffer Strategies VI Fund (Class Y) in the Funds Available Under the Policy table of Appendix A of the Prospectus, Initial Summary Prospectus, and Updating Summary Prospectus is deleted.

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 on our website at www.MassMutual.com.

Massachusetts Mutual Variable Life Separate Account I published this content on December 15, 2025, and is solely responsible for the information contained herein. Distributed via Edgar on December 15, 2025 at 16:09 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]