HOUGHTON MIFFLIN HARCOURT CO

CUSIP: 44157R109 Class: COM

CARLSON CAPITAL L P's Holding History (CIK: 0001056973)

Note: Option positions (PUT/CALL) are excluded.

Q3 2017
Shares 971,313 Value ($000) $11,704 Avg Close — Range —
Q2 2017
Shares 954,070 Value ($000) $11,735 Avg Close — Range —
Q1 2017
Shares 2,075,334 Value ($000) $21,065 Avg Close — Range —