Equity (Tables)

6 Months Ended

Jun. 30, 2026

Equity [Abstract]

Schedule of Change in Ownership of HMH B.V

The following table summarizes the change in ownership of HMH B.V.:


			Ownership																		Ownership Percentage
			HMH Holding Inc.						Non-controlling Interests						Total						HMH Holding Inc.						Non-controlling Interests						Total
Balance as of April 2, 2026			16,840,000						69,354,992						86,194,992						19.5		%				80.5		%				100		%
Purchase of HMH B.V. Shares			4,200,000						(4,200,000)						—						4.9		%				(4.9)		%				—		%
Partial Exercise of Underwriters Purchase Option			1,371,688						(1,371,688)						—						1.6		%				(1.6)		%				—		%
Issuance under the Equity Based Compensation Plan			1,673,568						—						1,673,568						1.4		%				(1.4)		%				—		%
Balance as of June 30, 2026			24,085,256						63,783,304						87,868,560						27.4		%				72.6		%				100.0		%

Schedule of Accumulated Other Comprehensive Income (Loss)

Accumulated other comprehensive income (loss) consisted of the following:


			June 30, 2026						December 31, 2025

			(in thousands)
Hedging reserve adjustments			$	6					$	465
Pension remeasurement reserve adjustments			712						2,691
Currency translation reserve adjustments			1,293						1,083
Total			$	2,011					$	4,239