HYPERION THERAPEUTICS INC

CUSIP: 44915N101 Class: COM

ALLIANCEBERNSTEIN L.P.'s Holding History (CIK: 0001109448)

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

Q1 2015
Shares 6,300 Value ($000) $289 Avg Close — Range —
Q4 2014
Shares 2,500 Value ($000) $60 Avg Close — Range —
Q3 2014
Shares 3,700 Value ($000) $93 Avg Close — Range —
Q2 2014
Shares 3,600 Value ($000) $94 Avg Close — Range —
Q1 2014
Shares 72 Value ($000) $2 Avg Close — Range —
Q4 2013
Shares 112,665 Value ($000) $2,278 Avg Close — Range —
Q3 2013
Shares 557,647 Value ($000) $14,571 Avg Close — Range —
Q2 2013
Shares 761,958 Value ($000) $16,763 Avg Close — Range —