Form 4 Filing for HMH Holding Inc.

This filing details stock transactions by Pal Skogerbo, Chief Technology Officer of HMH Holding Inc. On September 3, 2026, Skogerbo was granted 10,927 performance-based restricted stock units, which could vest up to 200% of the target based on the company's EBITDA growth over a three-year period. The performance condition was met at 100% of the target, resulting in the earned shares. Additionally, 5,180 shares of Class A common stock were withheld to cover tax obligations upon the vesting of these units. The transactions, including the acquisition of 10,927 shares and the disposal of 5,180 shares, both at a price of $19.26 per share, were approved under Rule 16b-3. Post-transaction, Skogerbo holds 67,211 shares directly.