GASTAR EXPL LTD

CUSIP: 367299203 Class: CMN

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q4 2013
Shares 103,001 Value ($000) $713 Avg Close — Range —
Q3 2013
Shares 33,835 Value ($000) $134 Avg Close — Range —