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!
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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