On September 18, 2018, the Board of Directors of BMC Stock Holdings, Inc. elected David E. Flitman to the Board to serve as a Class II director effective upon Mr. Flitman commencing his employment as the Company's President and Chief Executive Officer on September 26, 2018. As previously disclosed, on August 23, 2018, the Company entered into an Employment Agreement with Mr. Flitman, pursuant to which he will serve as the President and Chief Executive Officer of the Company and be appointed as a member of the Board upon commencing his employment. As a Class II director, Mr. Flitman will serve on the Board until the Company's 2021 annual meeting of stockholders and until his successor is duly elected and qualified.

Finally, David L. Keltner's resignation as Interim President and Chief Executive Officer will be effective on September 26, 2018 upon Mr. Flitman commencing his employment with the Company. Mr. Keltner will continue to serve as a director on the Board.