Effective on September 14, 2018, Resolute Energy Corporation and certain of its subsidiaries, as guarantors, entered into the Fourth Amendment to the Third Amended and Restated Credit Agreement, amending that certain Third Amended and Restated Credit Agreement dated as of February 17, 2017 with a syndicate of banks led by Bank of Montreal, as Administrative Agent, Capital One, National Association, as syndication agent, and Barclays Bank PLC, ING Capital LLC and SunTrust Bank, as co-documentation agents. The Fourth Amendment, among other things: adjusted the borrowing base from $210 million to $310 million; amended the calculation of EBITDA to provide for animalization of quarterly EBITDA through the second quarter of 2019; and made certain other administrative amendments to accommodate the future refinancing of existing 8.5% senior notes due 2020.