Certain Common Stock of GMS Inc. are subject to a Lock-Up Agreement Ending on 10-JAN-2018. These Common Stock will be under lockup for 30 days starting from 11-DEC-2017 to 10-JAN-2018. Details: Shares and securities convertibles into shares held by executive officers, directors and the selling stockholders are under lock up for a period of 30 days from the date of the prospectus supplement.