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Date	Form	Description	View
5/12/2011	424B2	Prospectus [Rule 424(b)(2)]
5/12/2011	8-K	Current Report
5/11/2011	FWP	Filing under Securities Act Rules 163/433 of free writing prospectuses
5/9/2011	8-K	Current Report
5/6/2011	4	Statement of Changes in Beneficial Ownership for CHRISTOPHER GARY R
5/6/2011	4	Statement of Changes in Beneficial Ownership for WILLIAMS JOHN H
5/6/2011	4	Statement of Changes in Beneficial Ownership for Sullivan Robert J Jr
5/6/2011	4	Statement of Changes in Beneficial Ownership for Peyton G Bailey IV
5/6/2011	4	Statement of Changes in Beneficial Ownership for Payne Larry C
5/6/2011	4	Statement of Changes in Beneficial Ownership for NIKKEL JOHN G
5/6/2011	4	Statement of Changes in Beneficial Ownership for MORGAN WILLIAM B
5/6/2011	4	Statement of Changes in Beneficial Ownership for HILDEBRAND STEVEN B
5/6/2011	4	Statement of Changes in Beneficial Ownership for ADCOCK J MICHAEL
5/6/2011	3	Initial Statement of Beneficial Ownership for Peyton G Bailey IV
5/6/2011	3	Initial Statement of Beneficial Ownership for Payne Larry C
5/4/2011	4	Statement of Changes in Beneficial Ownership for GEORGE KAISER FAMILY FOUNDATION
5/4/2011	8-K	Current Report
5/3/2011	424B5	Prospectus [Rule 424(b)(5)]
5/3/2011	S-3ASR	Automatic shelf registration statement of securities of well-known seasoned issuers
5/3/2011	8-K	Current Report

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