GMS Results Presentation Deck

Q4 2023 Net Sales ($ in millions) Fiscal Q4 (Unaudited) Organic (1) Acquisitions Fx Impact Total Net Sales Wallboard Ceilings Steel Framing Complementary Products Total Net Sales GMS GYPSUM MANAGEMENT & SUPPLY, INC. $ $ FY23 1,297.0 18.1 (11.0) 1,304.1 FY22 $ 1,288.7 $ 1,288.7 544.7 $ 491.1 155.1 148.9 223.8 276.9 380.5 371.8 1,304.1 $ 1,288.7 Variance Reported Organic 1.2% 10.9% 4.2% (19.2%) 2.3% 1.2% (1) 0.7% 11.4% 3.8% (19.1%) (0.0%) 0.7% 1. Organic net sales growth calculation excludes net sales of acquired businesses until first anniversary of acquisition date and impact of foreign currency translation. 14

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