Power of Attorney for HMH Holding Inc CTO Pal Skogerbo

This Form 3 filing includes a Power of Attorney executed by Pal Skogerbo, Chief Technology Officer of HMH Holding Inc (ticker: HMH), granting authority to three individuals (Thomas W. McGee, Dwight W. Rettig, and Cindy Nichols) to act as his attorneys-in-fact for SEC filing purposes. The power of attorney authorizes these individuals to prepare, execute, and file various SEC forms on Skogerbo's behalf, including Form ID, Forms 3, 4, and 5 related to Section 16 reporting requirements. The document was executed on August 22, 2024, and notarized in Norway. The filing indicates Skogerbo holds no securities in HMH Holding Inc as of the reporting date of March 31, 2026. The power of attorney remains in effect until Skogerbo is no longer subject to Section 16 filing requirements, he revokes it in writing, or the attorneys-in-fact are no longer employed by the company.