Live feed18:00:54·1524dINSIDERFilingvia QuantisnowSEC Form 4: Abbott Joseph Patrick Jr. returned 246,187 shares to the company, closing all direct ownership in the company (withholding obligation)ByQuantisnow·Wall Street's wire, on your screen.HMHC· Houghton Mifflin Harcourt CompanyMiscellaneousOriginal source