X0306 4 2018-01-08 0001255474 WHITING PETROLEUM CORP WLL 0001401016 Ross Rick A Mr. 1700 BROADWAY, SUITE 2300 DENVER CO 80290-2300 1 Vice President Common Stock 2018-01-08 4 F 0 1067 28.14 D 53287 D 2011 Stock Option - Right to Purchase 241.1408 2021-01-18 Common Stock 1025 1025 D Stock Option - Right to Purchase 137.24 2020-01-26 Common Stock 643 643 D Stock Option - Right to Purchase 204.88 2022-01-18 Common Stock 432 432 D Stock Option - Right to Purchase 51.0208 2019-02-18 Common Stock 2080 2080 D The number of shares of common stock previously reported by the reporting person was reduced by 163,063 as a result of the 1-for-4 reverse stock split of Whiting Petroleum Corporation's common stock effective on November 8, 2017. Cash was paid in lieu of the issuance of fractional shares with respect to shares of common stock not subject to restrictions. This option was previously reported as covering 4,100 shares at an exercise price of $60.285, but was adjusted to reflect the 1-for-4 reverse stock split of Whiting Petroleum Corporation's common stock effective on November 8, 2017. Any fractional share that would have become subject to this option as a result of the reverse stock split was canceled for no consideration. Grant to reporting person of ten-year 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. This option was previously reported as covering 2,572 shares at an exercise price of $34.31, but was adjusted to reflect the 1-for-4 reverse stock split of Whiting Petroleum Corporation's common stock effective on November 8, 2017. Any fractional share that would have become subject to this option as a result of the reverse stock split was canceled for no consideration. This option was previously reported as covering 1,731 shares at an exercise price of $51.22, but was adjusted to reflect the 1-for-4 reverse stock split of Whiting Petroleum Corporation's common stock effective on November 8, 2017. Any fractional share that would have become subject to this option as a result of the reverse stock split was canceled for no consideration. This option was previously reported as covering 8,318 shares at an exercise price of $12.755, but was adjusted to reflect the 1-for-4 reverse stock split of Whiting Petroleum Corporation's common stock effective on November 8, 2017. Any fractional share that would have become subject to this option as a result of the reverse stock split was canceled for no consideration. /s/ Bruce R. DeBoer, Attorney-in-Fact 2018-01-10