GASTAR EXPL INC NEW

CUSIP: 36729W202 Class: COMMON STOCK

MARSHALL WACE, LLP's Holding History (CIK: 0001318757)

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

Q4 2014
Shares 950,523 Value ($000) $2,291 Avg Close — Range —
Q3 2014
Shares 1,137,127 Value ($000) $6,675 Avg Close — Range —
Q2 2014
Shares 200,364 Value ($000) $1,745 Avg Close — Range —