Supplement dated July 13, 2026
to the Prospectuses, Initial Summary Prospectuses, and Updating Summary Prospectuses, each dated April 27,
2026, as supplemented, for:
C.M. Life Electrum SelectSM
Issued by C.M. Life Insurance Company
Strategic Group Variable Universal Life® II
Issued by Massachusetts Mutual Life Insurance Company
and the Prospectus and Updating Summary Prospectus, each dated April 27, 2026, as supplemented, for:
MassMutual ElectrumSM
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 July 1, 2026, this supplement amends certain information in the above-referenced prospectuses. The information for the MML VIP Wellington Small Cap Growth Equity Fund in Appendix A of the prospectuses is deleted and replaced with the following:
| Fund Type | Fund and Adviser/Sub-Adviser | Current Expenses (expenses/average assets) | Average Annual Total Returns (as of 12/31/2025) | ||
| 1 Year | 5 Year | 10 Year | |||
| Small/Mid-Cap Growth |
Adviser: Sub-Adviser: | ||||
| (*) | 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. |
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:
| Executive Group Life –Strategic Group Variable Universal Life® II | (800)
548-0073 8 a.m.–5 p.m. Eastern Time |
| Institutional Insurance – C.M. Life Electrum SelectSM | (800)
665-2654 8 a.m.–5 p.m. Eastern Time |
For more information about the fund, read the fund prospectus. Fund prospectuses are available on our website at www.MassMutual.com.
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