X0306 4 2015-04-20 0000798949 UNIT CORP UNT 0001012081 SCHELL MARK E 7130 SOUTH LEWIS, SUITE 1000 TULSA OK 74136 1 SR. V-P, General Counsel Common Stock 2015-04-20 4 S 0 5500.0000 31.1501 D 96524.0000 D Common Stock 40063.0000 I By 401(k) This transaction was executed in multiple trades at prices ranging from $31.1321 to $31.181, inclusive. The price reported above reflects the weighted average sales price. The reporting person hereby undertakes to provide to Unit Corporation, any security holder of Unit Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the stated range. This information is based on a plan statement dated as of April 20, 2015. By April Adler under POA 2015-04-21