Year All2026202520242023 HMH Holding Inc. Announces Pricing of Initial Public Offering Mar 31, 2026 HMH Holding Inc. Announces Launch of Initial Public Offering Mar 23, 2026 HMH Holding B.V. fourth quarter report for 2025 Feb 27, 2026 HMH Financial Update Q4 2025 Feb 12, 2026