EARTHSTONE ENERGY, INC. Borrower EARTHSTONE OPERATING, LLC EO EF NON-OP, LLC EF SABINE RIVER ENERGY, LLC Sabine BASIC PETROLEUM SERVICES, INC. Basic LYNDEN ENERGY CORP. LE LYNDEN USA, INC. LUSA Guarantor Guarantors BOKF, NA dba BANK OF TEXAS Agent . Party Parties.