HOUGHTON MIFFLIN HARCOURT CO

CUSIP: 44157R109 Class: COM

GILDER GAGNON HOWE & CO LLC's Holding History (CIK: 0000902464)

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

Q4 2021
Shares 103,167 Value ($000) $1,661 Avg Close — Range —
Q3 2021
Shares 103,167 Value ($000) $1,386 Avg Close — Range —
Q2 2021
Shares 120,861 Value ($000) $1,334 Avg Close — Range —
Q1 2021
Shares 120,945 Value ($000) $922 Avg Close — Range —