The completion of the transactions contemplated by that certain Agreement and Plan of Merger, dated as of August 26, 2020 (as amended, restated, supplemented or otherwise modified from time to time, the “Merger Agreement”), by and among BMC Stock Holdings, Inc. (“BMC”), Builders FirstSource, Inc.(“Builders FirstSource”), and Boston Merger Sub I Inc., a direct wholly owned subsidiary of Builders FirstSource (“Merger Sub”). As of the Effective Time, all of BMC’s directors ceased serving as directors of BMC. Pursuant to the Merger Agreement, from and after the Effective Time, Messrs. M. Chad Crow and Peter Jackson, the directors of Merger Sub immediately prior to the Effective Time, became the directors of BMC as the surviving corporation in the Merger.