$Chaparral Energy, Inc. Class A(CHAP)$ 8-K - Current report Filed: 2018-07-02 AccNo: 0001193125-18-211548 Size: 965 KBItem 1.01: Entry into a Material Definitive AgreementItem 2.03: Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a RegistrantItem 5.07: Submissio 网页链接