Chaparral Energy Completes $300 Million Rule 144A/Reg S Offering

September 16, 2010

Cahill represented J.P. Morgan Securities LLC, Credit Suisse Securities (USA) LLC, RBC Capital Markets Corporation and UBS Securities as joint book-running managers and the other initial purchasers in the Rule 144A/Reg S offering of $300,000,000 9.875% Senior Notes due 2020 by Chaparral Energy, Inc.