Investors

List of the current and past investors into Houghton Mifflin Harcourt Publishing Company with their respective financial instruments.

Profile Country Phone Round
ABRY Partners LLC (ABRY Private Equity) Private equity investment firm focused on media, communications, insurance, business and information services. United States +1 (617) 859-2959 N/A
The Blackstone Group LP Private equity firm United States +1 (212) 583-5000 N/A