Matches in DBpedia 2014 for { ?s ?p Barry O'Callaghan is an Irish businessman, former chairman and CEO of Houghton Mifflin Harcourt (HMH), and the Chairman of Education Media and Publishing Group (EMPG), the Cayman Island holding company for Houghton Mifflin Harcourt.He was the largest shareholder in EMPG on its formation in 2007 with a controlling stake of circa 48%. O'Callaghan created Houghton Mifflin Harcourt, one of the largest educational publishers in the United States, by merging existing companies.. }
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- Barry_O'Callaghan comment "Barry O'Callaghan is an Irish businessman, former chairman and CEO of Houghton Mifflin Harcourt (HMH), and the Chairman of Education Media and Publishing Group (EMPG), the Cayman Island holding company for Houghton Mifflin Harcourt.He was the largest shareholder in EMPG on its formation in 2007 with a controlling stake of circa 48%. O'Callaghan created Houghton Mifflin Harcourt, one of the largest educational publishers in the United States, by merging existing companies.".