GMS Investor Presentation Deck

Local Go-To-Market Strategy with Scale Benefits AMERICAN ARCHITECTURAL AM WORKIN PREMIUM FOAM CONSTRUCTION CAPITOL CMC MATERIALS COASTA AGMS COMPANY E INC M J AGMS COMPANY KARPP AGMS COMPANY NYC ACOUSTICAL SUPPLY ROCKY TOP MATERIALS, INC TUCKER AMES Brywall Finishing Tools & Services A GMS COMPANY CHAPARRAL MATERIALS, INC. A GMS COMPANY GATOR GYPSUM AGMS COMPANY STEVEN KEMPF BUILDING MATERIALS A GMS COMPANY OHIO VALLEY DRYWALL SUPPLY A CMS COMPANY GMS GYPSUM MANAGEMENT & SUPPLY, INC. Ryan AGE COMPANY TUCKER MATERIALS ASI BUILDING PRODUCTS BM CHEROKERUDING MATERIALS A GMS COMPANY GYPSUM SUPPLY COMPANY KKIMCO SUPPLY COMPANY SUILDING SUPPLY SPECIALIST AOME COMPANY OHIO VALLEY INSTALLED AGMS COMPANY SHOEMAKER DRYWALL SUPPLIES A GMS COMPANY UNITED AGMS COMPANY BADGERLAND SUPPLY A GMS COMPANY Colonial Materials GTS Interior Supply AGMS COMPANY LEADING EDGE INSULATION SERVICES AGM COMANY OLYMPIA BUILDING SUPPLIES SLEGG BUILDING MATERIALS AGMS+COMPANY BC Ceiling BLAIR Systems A GMS COMPANY AGMS COMPANY COMMONWEALTH BUILDING MATERIALS A OMS COMPANY SINCE HARDY 1946 A GMS COMPANY one Star Materials Inc. AGMS COMPANY SERVICE VALUE QUALITY PHD A GMS COMPANY Ⓒ SVS sun valley supply, Inc. AGA COMPANY Valley WATSON Interior Products BUILDING MATERIALS A GMS+COMPANY reacoustics grated Acoustic Systems AGMS COMPANY HATHAWAY SINCE 1944 BUILDING MATERIALS A GMS COMPANY PIONEER materials, inc. CAPCO Capitel Acoustical A GMS COMPANY Products Company A GMS COMPANY COWTOWN MATERIALS, INC. HOME LUMBER & BUILDING SUPPLIES AGMS COMPANY EER BUILDING MATERIALS INC. A GMS COMPANY WEST TAMARACK Tanner CAN COMPANY MDS MR.Lee NEW ENGLAND MISSOURI DRYWALL SUPPLY GYPSUM AGMS COMPANY AGME COMPANY WESTSIDE Wildcat MATERIALS CAPITOL BUILDING SUPPLY AGMS COMPANY AGMS COMPANY J dL ips RIGNEY INTERIOR PRODUCTS SUPPLY PMW ACOUSTICAL TEJAS MATERIALS, INC. A Complete Del & Apy Center ACOMPANY Capitol Materials, Inc. A GMS COMPANY DSI DRYWALL SUPPLY INC. A GMS COMPANY P& MATERIALS AGMS COMPANY NORTH AMERICAN DOOR & HARDWARE. AGMS COMPANY RIVER BEND MATERIALS, INC. TROWEL TTTRADES SUPPLY ANY W GMS distribution locations USA and Canada ● Canada ● SW MW NE GMS's model provides for the intimacy of a local business, exceptional customized service and an entrepreneurial culture while leveraging North American economy of scale SE Combines the benefits of a local "go-to-market" strategy with economics of scale Integrated North American platform operated through over 60 highly-respected local brands 6

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