Houghton Mifflin Harcourt reported full year and 4th quarter earnings for 2018 Thursday morning — and despite closing sales ahead of expectations, and within the company’s 2018 guidance, the market reacted sharply. Shares were down more than 11 percent in the first hour of trading, with a higher-than-expected fourth quarter loss from continuing operations and a looming refinancing of their big debt load. Net sales for the year from continuing operations (given the fall sale of the Riverside Assessments division) were just below flat, to $1.32 billion from $1.33 billion in 2017; the $24 million sales decrease in the company’s […]