GMS Results Presentation Deck

End Market & Product-Level Expectations for Q1 FY2024 Product Category Q1 FY24 YOY Volume Expectations Wallboard Ceilings Steel Framing Complementary Products Multi-family: Up high teens Single-family: Down 10-15% Commercial: Up mid-to-high single-digits. Total Wallboard: Flat to down low single-digits GMS GYPSUM MANAGEMENT & SUPPLY, INC. Down low single-digits Up low-to-mid teens Up * spation *Sales growth in Complementary Products, including the benefits of recent acquisitions, is expected to be up low double-digits YOY with balanced contributions from both volume and price. Spongestions dis y Georgia Pacific Georgia Pacific Georgsthetic Georgic Am Georglspacific Georgiadacific w INTERIOR CEILING POUR PLAFOND INTERIEUR INTERIOR CEILING 200U PLAFOND INTERIEUR INTERIOR CEILING ainfeed POUR PLAFOND INTÉRIEUR Certainleed Certainfood INTERIOR CEILING Certainleed Certainleed POUR PLAFOND INTERIEUR INTERIOR CEILING Q1 FY24 YOY Price Expectations INTERIOR CEILING POUR PLAFOND INTERIEUR PLAFOND INTERIEUR ECOND INTÉRIEUR INTERIOR CEILING Up high single-digits Up low single-digits Down 25% - 30% Up* 1/2 x 12 TE/BA 4341 1/2"x 12, TE/BA 1/2 x 12' TE/BA 1/2 x 12 TE/BA www 1/2 x 12 TE/BA 1/2"x 12 TE/BA 12' TE/BA b L 12/ /.*.2/L MICH Y .*.2/ L HELL MONTIN OSVOT OF MO MORIN OS ONFIDH HORNBAN ONIT VON 8

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