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Date	Form	Description	View
5/3/2011	10-Q	Quarterly Report
5/3/2011	8-K	Current Report
4/5/2011	4	Statement of Changes in Beneficial Ownership for SCHELL MARK E
4/5/2011	4	Statement of Changes in Beneficial Ownership for PINKSTON LARRY D
4/5/2011	4	Statement of Changes in Beneficial Ownership for Parks Robert
4/5/2011	4	Statement of Changes in Beneficial Ownership for MERRILL DAVID T
4/5/2011	4	Statement of Changes in Beneficial Ownership for Guidry Brad
4/5/2011	4	Statement of Changes in Beneficial Ownership for Cromling John
3/29/2011	4	Statement of Changes in Beneficial Ownership for GEORGE KAISER FAMILY FOUNDATION
3/25/2011	4	Statement of Changes in Beneficial Ownership for GEORGE KAISER FAMILY FOUNDATION
3/23/2011	4	Statement of Changes in Beneficial Ownership for GEORGE KAISER FAMILY FOUNDATION
3/21/2011	DEF 14A	Proxy Statement (definitive)
3/18/2011	ARS	Annual Report to Security Holders
3/11/2011	4	Statement of Changes in Beneficial Ownership for Hayes Don A
3/3/2011	4	Statement of Changes in Beneficial Ownership for Guidry Brad
3/1/2011	4	Statement of Changes in Beneficial Ownership for Guidry Brad
3/1/2011	4	Statement of Changes in Beneficial Ownership for WILLIAMS JOHN H
2/25/2011	4	Statement of Changes in Beneficial Ownership for Parks Robert
2/24/2011	10-K	Annual Report
2/22/2011	8-K	Current Report

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