HOUGHTON MIFFLIN HARCOURT CO

CUSIP: 44157R109 Class: COM

Parallax Volatility Advisers, L.P.'s Holding History (CIK: 0001521001)

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

Q3 2020
Shares 69,905 Value ($000) $121 Avg Close — Range —
Q2 2020
Shares 589 Value ($000) $1 Avg Close — Range —
Q1 2020
Shares 29,300 Value ($000) $55 Avg Close — Range —
Q4 2019
Shares 17,498 Value ($000) $109 Avg Close — Range —
Q4 2017
Shares 15,792 Value ($000) $147 Avg Close — Range —