HOUGHTON MIFFLIN HARCOURT CO

CUSIP: 44157R109 Class: COM

HBK INVESTMENTS L P's Holding History (CIK: 0001011443)

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

Q1 2019
Shares 68,321 Value ($000) $497 Avg Close — Range —
Q2 2018
Shares 247,188 Value ($000) $1,891 Avg Close — Range —
Q1 2018
Shares 177,600 Value ($000) $1,234 Avg Close — Range —
Q4 2017
Shares 110,500 Value ($000) $1,028 Avg Close — Range —
Q2 2017
Shares 184,287 Value ($000) $2,267 Avg Close — Range —
Q1 2017
Shares 505,400 Value ($000) $5,130 Avg Close — Range —
Q4 2016
Shares 453,200 Value ($000) $4,917 Avg Close — Range —
Q2 2016
Shares 12,400 Value ($000) $194 Avg Close — Range —
Q3 2015
Shares 98,900 Value ($000) $2,009 Avg Close — Range —
Q2 2015
Shares 21,500 Value ($000) $542 Avg Close — Range —