Ownership Filing by Baker Hughes Co. and Baker Hughes Holdings LLC for HMH Holding Inc.

This filing details the ownership structure and transactions related to HMH Holding Inc. (HMH) involving Baker Hughes Co. and its subsidiary Baker Hughes Holdings LLC. Prior to HMH's IPO, Baker Hughes Holdings LLC held 50 Class B and 50 Class A ordinary shares in HMH B.V., the predecessor to HMH. Subsequent to a corporate reorganization and IPO participation, Baker Hughes will hold additional shares. HMH B.V. will undergo a stock split and recapitalization, converting some voting shares to non-voting ones. Baker Hughes Holdings LLC will sell remaining voting shares to HMH for cash and receive Class B common stock in exchange for relinquishing voting rights. An exchange agreement allows Baker Hughes to exchange Issuer Class B Shares, B.V. Non-Voting Class A Shares, and B.V. Non-Voting Class B Shares for cash or Class A common stock of the Issuer after the IPO lock-up period. Judson E. Bailey and M. Georgia Magno, directors of HMH, were nominated by Baker Hughes Holdings LLC, potentially making the latter a "director by deputization." The reporting period ends March 31, 2026.