Vanguard Natural Resources, Inc. announced the resignation of Joseph Citarrella as Chairman of the Board and as a Board member, effective on the earlier of January 15, 2019 or the date on which the Board names a successor chairman. On December 19, 2018, the Board selected current Board member W. Greg Dunlevy to succeed Mr. Citarrella as Chairman of the Board, effective immediately. Mr. Dunlevy also serves as Chairman of the Board’s Audit Committee.