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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1255474	Whiting Petroleum Corp	WLL	Crude Petroleum & Natural Gas (1311)	200098515

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1307387	Douglas John Lang	1700 Broadway, Suite 2300 Denver CO 80290	Vice President	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Disposition	2011-05-02	1,912	$68.91	17,378	No	4	S	Direct
Common Stock	Disposition	2011-05-03	4,000	$65.64	13,378	No	4	S	Direct
Common Stock	Disposition	2011-05-03	2,750	$66.00	10,628	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct

Reported Derivative Holdings

Sec. Name	Sec. Type	Price	Date	Expiration Date	Amount	Remaning Holdings	Nature of Ownership
Common Stock	2011 Stock Option - Right to Purchase	$60.29		2021-01-18	4,100	4,100	Direct
Common Stock	Stock Option - Right to Purchase	$34.31		2020-01-26	2,572	2,572	Direct

Expiration Date	Amount	Remaning Holdings	Nature of Ownership
2021-01-18	4,100	4,100	Direct
2020-01-26	2,572	2,572	Direct

Footnotes

Grant to reporting person of option to buy shares of common stock under the Whiting Petroleum Corporation 2003 Equity Incentive Plan. The option vests and becomes exercisable as follows: 1/3 on 1st anniversary of the date of grant, 2/3 on 2nd anniversary of the date of grant and 3/3 on 3rd anniversary of the date of grant.
Adjusted to reflect the two-for-one split of Whiting Petroleum Corporation common stock distributed on February 22, 2011 to holders of record as of February 7, 2011.