Riviera Resources, Inc. announced C. Gregory Harper has resigned as a member of the Company’s Board of Directors (“the Board”), each effective April 27, 2020 (the “Effective Date”). Mr. Harper’s resignation was not the result of any disagreement with the Company on any matter relating to the operations, internal controls, policies or practices of the Company. Following Mr. Harper’s resignation, the Company plans to consolidate the management of Blue Mountain within the Company’s existing executive management team. The Board does not intend to select a member to replace Mr. Harper and, as permitted by the Company’s bylaws, the Board plans to approve a decrease in the number of authorized directorships of the Board from six members to five members following the Effective Date.