W. Philip Cook

Insider Trading: Sales

Company	Symbol	Price	Amount	Relationship	Remaining Holdings	Date	Form 4
Quicksilver Gas Services Lp	KGS	$22.33	13,400	Officer, Director	41,414	2010-08-12	Filing
Quicksilver Resources Inc	KWK	$12.07	30,900	Officer	187,114	2010-05-13	Filing
Quicksilver Resources Inc	KWK	$13.84	8,500	Officer	145,883	2009-09-16	Filing
Quicksilver Resources Inc	KWK	$9.34	20,000	Officer	154,383	2009-06-23	Filing