X0303 4 2011-04-01 0000798949 UNIT CORP UNT 0001390948 Guidry Brad 7130 SOUTH LEWIS, SUITE 1000 TULSA OK 74136 1 Executive Vice President, UPC Common Stock 2011-04-01 4 F 0 797.0000 63.4300 D 26692.0000 D Common Stock 292.0000 I By 401(k) Code F is being used to report shares withheld by the company as payment for tax liability incident to the vesting of the second of four equal annual installments of common stock under an award granted March 9, 2010. Based on a plan statement dated April 4, 2011. By April Adler under POA 2011-04-05