A Prospectus Supplement filing for MassMutual U.S. Government Money Market Fund announced the liquidation of the fund. It says, "Effective September 5, 2025 (the 'Termination Date'), the MassMutual U.S. Government Money Market Fund (the 'Fund') was dissolved pursuant to a Plan of Liquidation and Termination, approved by the Board of Trustees of the MassMutual Premier Funds. Shareholders of Class R5 shares of the Fund received proceeds in proportion to the number of Class R5 shares held by each of them on the Termination Date."