GMS Results Presentation Deck

Q2 Fiscal 2024 Sales Highlights Solid demand in commercial and multi-family construction drove volume increases in Ceilings, Steel Framing and Complementary Products, offset by price deflation in Steel Framing Deflationary price dynamics in Steel Framing reduced net sales by $85 million for the quarter $1.4B Q224 Net Sales 0.7% Total GMS GYPSUM MANAGEMENT & SUPPLY, INC. U.S. Residential Sales Wallboard Ceilings Steel Framing Complementary Products essen 5.7% Q224 $ 9.0 $ 2.7 $ $ 3.6 $ $ 6.6 $ $21.9 $ $ U.S. Commercial Sales Per Day Net Sales Q223 9.0 2.5 4.3 6.3 22.1 Change 0.4% 0.1% $ 9.9% $ - 16.6% $ $ 4.8% -0.7% $ U.S. Wallboard Volume For GMS Per Day Organic Sales Q224 9.0 $ 9.0 2.6 $ 2.5 3.5 $ 4.3 6.2 $ 6.3 21.3 $ 22.1 Multi-Family - Up 17.0% Commercial - Up 6.5% Single-Family - Down 11.4% Q223 Change -0.3% 7.2% -17.4% -1.4% -3.1% Per Day Organic Growth Volume Price/Mix/Fx -1.0% 5.8% 13.1% 0.7% 1.4% -30.5% 5

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