GMS Results Presentation Deck

With Higher SG&A & Increased Interest Expense, Net Income Declined While Adj. EBITDA¹ Improved YOY for Q423 Gross Profit & Gross Margin ("GM") Up YOY due to the successful pass-through of product inflation, improved commercial Wallboard sales, growth in higher margin Complementary Products, shifts in end markets and incremental profit from acquisitions ($ mm) $412.8 32.0% Fiscal Q4 2022 Gross Profit GMS GYPSUM MANAGEMENT & SUPPLY, INC. $424.5 32.5% Fiscal Q4 2023 Gross Margin SG&A Inflationary wages, higher facilities costs and a one-time charge for bad debt negatively impacted SG&A. SG&A leverage was also negatively impacted by deflationary steel prices and end market shift ($ mm) $259.9 20.2% Fiscal Q4 2022 Adj. SG&A $272.4 20.9% Fiscal Q4 2023 -Adj. SG&A as % of Sales Net Income & Adj. EBITDA¹ Including a 27% increase in interest expense, Net income decreased 1.2% YOY from $76.5M to $75.6M. EPS outpaced net income due to our share repurchase activity. ($ mm) $154.2 12.0% Fiscal Q4 2022 Adj. EBITDA 1 $154.3 11.8% Fiscal Q4 2023 1 -Adj. EBITDA Margin ¹For a reconciliation of Adjusted SG&A, Adjusted Net Income, Adjusted EBITDA and Adjusted EBITDA Margin to the most directly comparable GAAP metrics, see Appendix. 6

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