Houghton Mifflin Harcourt Company (HMHC) operates as a worldwide learning technology provider, furnishing educational curricula, supplementary content, intervention programs, and professional development services. Its extensive offerings encompass core academic disciplines like reading, literature, mathematics, science, and social studies. The firm further provides additional learning solutions, professional resources, and specialized educational services for educators, particularly under its Heinemann brand. Established in 1832 and headquartered in Boston, Massachusetts, the company was previously known as HMH Holdings (Delaware), Inc. until its renaming in October 2013. Houghton Mifflin Harcourt Company transitioned to private ownership on April 6, 2022.