Houghton Mifflin Harcourt Learning Technology

Houghton Mifflin Harcourt Learning Technology

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Houghton Mifflin Harcourt Learning Technology

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Houghton Mifflin Harcourt Learning Technology originally started as Riverdeep Interactive Learning, is a publishing house for educational online and CD-ROM products based in San Francisco and Dublin, Ireland. Founded in 1995, Riverdeep was principally the creation of the Irish ex-investment banker Barry O'Callaghan. O'Callaghan was Riverdeep's CEO and controlling shareholder.

In October 2002, Riverdeep became a private entity when their stock price plummeted below $2 in NASDAQ.

On September 20, 2004, Riverdeep moved its Novato office to 100 Pine Street in San Francisco.

Hamtaro PC Game

Riverdeep also helped on a game called Wake Up Snoozer!

Houghton Mifflin

On December 22, 2006, it was announced that Riverdeep PLC had completed its acquisition of Houghton Mifflin. The new joint enterprise would be called the Houghton Mifflin Riverdeep Group. Riverdeep paid 1.75 billion in cash and assumed $1.61 billion in debt from the private investment firms Thomas H. Lee Partners, Bain Capital Partners and The Blackstone Group.<ref name="Irish company completes Houghton Mifflin acquisition"> Tony Lucki, a former non-executive director of Riverdeep, would remain in his position as Houghton Mifflin's chief executive officer. HM Rivergroup indicated it wanted to capitalize on the "convergence of print and digital education platforms."

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