X0306 4 2018-08-16 0 0001346980 Chaparral Energy, Inc. CHAP 0001747232 Reynolds Kermit Earl 701 CEDAR LAKE BLVD OKLAHOMA CITY OK 73114 1 1 0 0 Chief Executive Officer Class A Common Stock 2018-03-15 4 F 0 22014 22.25 D 502778 D Class A Common Stock 2018-04-02 4 F 0 57426 17.70 D 445352 D Class A Common Stock 2018-08-16 4 P 0 3100 15.9839 A 448452 D Class A Common Stock 2018-08-17 4 P 0 2800 16.0817 A 451252 D Exempt sale pursuant to Rule 16b-3(e) promulgated under the Securities Exchange Act of 1934. Represents shares of Class A Common Stock of the Issuer delivered or withheld for payment of withholding taxes upon the vesting of certain restricted stock awarded under the Management Incentive Plan of the Issuer, dated as of August 9, 2017. Represents a weighted average purchase price for the shares of Class A Common Stock - the high price was $16.2500 and the low price was $15.7700. The holder undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote. Represents a weighted average purchase price for the shares of Class A Common Stock - the high price was $16.4000 and the low price was $16.0000. The holder undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote. /s/ Linda Byford, Attorney-in-Fact 2018-08-20