BOSTON, Feb. 2, 2018 /PRNewswire/ — Houghton Mifflin Harcourt (HMH) (NASDAQ: HMHC) today announced that it will release its fourth quarter and full year 2017 financial and operating results on Thursday, Feb. 22, 2018, before the market opens.
At 8:30 a.m. ET on Thursday, Feb. 22,…
