Form 4 Filing for HMH Holding Inc. - Officer Stock Acquisition

Dwight W. Rettig, Chief Administrative Officer, General Counsel, and Corporate Secretary of HMH Holding Inc., acquired 97,338 shares of Class A Common Stock on April 2, 2026. This acquisition, valued at $0.00, was made under the HMH Holding Inc. 2026 Long-Term Incentive Plan. The shares were granted as restricted stock units (RSUs) and include units that vested immediately, as well as others scheduled to vest through September 1, 2028. Following this transaction, Mr. Rettig directly owns 97,338 shares.