This supplement provides new and additional information beyond that contained in the Statement of Additional Information (“SAI”) and any previous supplements. It should be retained and read in conjunction with the SAI and any previous supplements.

Effective immediately, the following information for Jason T. Marino supplements the information found beginning on page B-59 under the heading Principal Officers in the section titled Management of the Trust:

Head of Manager Research (since 2026), Investment Director (2011–2026), MML Advisers; Head of Manager Research (since 2026), Investment Director (2011–2026), MassMutual; Vice President (since 2026), MassMutual Select Funds (open-end investment company); Vice President (since 2026), MassMutual Premier Funds (open-end investment company); Vice President (since 2026), MassMutual Advantage Funds (open-end investment company); Vice President (since 2026), MML Series Investment Fund (open-end investment company); Vice President (since 2026), MML Series Investment Fund II (open-end investment company).