On September 10, 2019, James T. Hackett, the Interim Chief Executive Officer and Chairman of the Board of Directors of Alta Mesa Resources, Inc., informed the Company that he intends to resign, effective September 10, 2019, as the Interim Chief Executive Officer of the Company. Mr. Hackett will continue as the Executive Chairman of the Board. On September 10, 2019, Alta Mesa Services entered into an Amended and Restated Consulting Agreement (the Consulting Agreement) with Meridian Energy LLC (Meridian), Randy Limbacher, John H. Campbell, Jr. and Mark P. Castiglione, pursuant to which Meridian has agreed to continue providing Alta Mesa Services the services of Messrs.

Limbacher, Campbell and Castiglione (collectively, the Consultants). Pursuant to the Consulting Agreement, Mr. Limbacher will serve as Executive Vice President of Strategy of the Company, while Mr. Campbell will serve as the President and Chief Operating Officer of the Company and Mr. Castiglione will serve as the Chief Executive Officer of the Company, in each case on a consulting basis. Mr. Limbacher's salary will be reduced to $450,000 per year and Mr. Castiglione's salary will be increased to $700,000 per year in their new positions with the Company.