Live feed18:59:31·1553dINSIDERFilingvia QuantisnowSEC Form 4: Abbott Joseph Patrick Jr. converted options into 44,339 shares and covered exercise/tax liability with 19,812 shares, increasing direct ownership by 11% to 246,187 units (tax withholding)ByQuantisnow·Wall Street's wire, on your screen.HMHC· Houghton Mifflin Harcourt CompanyMiscellaneousOriginal source