Effective as of April 23, 2020, Matthew Bonanno resigned from his position as a member of the Board of Directors of Riviera Resources, Inc., as the Chairperson of the Audit Committee of the Board and as a member of the Compensation Committee of the Board. On April 23, 2020, the Board elected Thanasi Skafidas to the Board as a director, effective immediately, to fill the vacancy created by Mr. Bonanno's resignation. Mr. Skafidas will serve on the Audit Committee and Compensation Committee. In connection with Mr. Bonanno's resignation, the Board appointed Joseph A. Mills to serve as Chairperson of the Audit Committee.