HOUGHTON MIFFLIN HARCOURT CO

CUSIP: 44157R109 Class: COM

Apollo Management Holdings, L.P.'s Holding History (CIK: 0001449434)

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

Q1 2015

Shares 4,068,146 Value ($000) $95,520 Avg Close — Range —

Q4 2014

Shares 4,068,146 Value ($000) $84,251 Avg Close — Range —

Q3 2014

Shares 4,068,146 Value ($000) $79,085 Avg Close — Range —

Q2 2014

Shares 4,068,146 Value ($000) $77,946 Avg Close — Range —

Q1 2014

Shares 4,068,146 Value ($000) $82,705 Avg Close — Range —

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2015	4,068,146	$95,520	—	—
Q4 2014	4,068,146	$84,251	—	—
Q3 2014	4,068,146	$79,085	—	—
Q2 2014	4,068,146	$77,946	—	—
Q1 2014	4,068,146	$82,705	—	—