Form 497VPU MASSACHUSETTS MUTUAL
Supplement dated November 17, 2025
to the Prospectus and Updating Summary Prospectus each dated April 28, 2025, as supplemented, for:
MassMutual Transitions®
Issued by Massachusetts Mutual Life Insurance Company
| THIS SUPPLEMENT MUST BE READ IN CONJUNCTION WITH
YOUR PROSPECTUS. PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE. |
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 Contract:
|
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 |
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.
| page 1 of 2 | PS25_14 |
Fund Name Changes and Sub-Adviser Changes
| · | Effective November 14, 2025, the following funds were renamed and the following fund sub-adviser changes occurred: |
| Current Fund Name | New Fund Name |
|
MML International Equity Fund Adviser: MML Investment Advisers, LLC Sub-Advisers: Massachusetts Financial Services Company and Harris Associates L.P. |
MML VIP MFS International Equity Fund Adviser: MML Investment Advisers, LLC Sub-Adviser: Massachusetts Financial Services Company |
|
MML Total Return Bond Fund Adviser: MML Investment Advisers, LLC Sub-Adviser: Metropolitan West Asset Management, LLC |
MML VIP Fidelity Institutional AM® Core Plus Bond Fund Adviser: MML Investment Advisers, LLC Sub-Adviser: FIAM LLC |
| · | Effective November 14, 2025, the following funds were renamed: |
| Current Fund Name | New Fund Name |
| MML Large Cap Growth Fund | MML VIP Loomis Sayles Large Cap Growth Fund |
| 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 Service Center 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.
| page 2 of 2 | PS25_14 |
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