HOUGHTON MIFFLIN HARCOURT CO

CUSIP: 44157R109 Class: COM

ADAGE CAPITAL PARTNERS GP, L.L.C.'s Holding History (CIK: 0001165408)

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

Q1 2022
Shares 1,700,000 Value ($000) $35,717 Avg Close — Range —
Q2 2014
Shares 225,000 Value ($000) $4,311 Avg Close — Range —
Q1 2014
Shares 225,000 Value ($000) $4,574 Avg Close — Range —
Q4 2013
Shares 225,000 Value ($000) $3,816 Avg Close — Range —