Form 497VPU MASSACHUSETTS MUTUAL

Supplement dated November 17, 2025

 

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

 

Variable Universal Life III

Issued by Massachusetts Mutual Life Insurance Company

 

 

This supplement amends certain information in the above-referenced prospectuses:

 

Fund Additions

 

Beginning November 17, 2025, the following funds are added to Appendix A as investment options under your policy:

 

Fund Type	Fund and Adviser/Sub-Adviser	Current Expenses (expenses/ average assets)	Average Annual Total Returns (as of 12/31/2024)
			1 Year	5 Year	10 Year
Small/Mid-Cap Growth	MML Invesco Discovery Mid Cap Fund (Class II)** Adviser: MML Investment Advisers, LLC Sub-Adviser: Invesco Advisers, Inc.	0.83%	--	--	--
Large Cap Growth	MML Invesco Discovery Large Cap Fund (Class II)** Adviser: MML Investment Advisers, LLC Sub-Adviser: Invesco Advisers, Inc.	0.74%	--	--	--
Large Cap Blend	MML Fundamental Equity Fund (Class II) Adviser: MML Investment Advisers, LLC Sub-Adviser: Invesco Advisers, Inc.	0.80%*	23.71%	13.21%	13.43%

 

*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.

 

**The expenses are based on estimated amounts for the current fiscal year of the Fund. The Fund has not been in operation for a full calendar year, and therefore has no performance history. Performance history will be available for the Fund after it has been in operation for one calendar year.

 

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PS25_16

Fund Name Changes

 

Effective November 14, 2025, the following funds were renamed:

 

Current Fund Name	New Fund Name
MML Mid Cap Value Fund	MML VIP American Century Mid Cap Value Fund
MML Small Cap Equity Fund	MML VIP Invesco Small Cap Equity 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 on our website at www.MassMutual.com.

 

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PS25_16

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