GMS Investor Presentation Deck

Consolidated GMS Expectations for Q1 FY24 and Full Year Fiscal 2024 Metric for Q1 FY24 Net Sales Gross Margin Adjusted EBITDA¹ Metric for Full Year FY24 Interest Expense Capital Expenditures Free Cash Flow¹ GMS GYPSUM MANAGEMENT & SUPPLY, INC. Q1 FY24 Expectation Up low single-digits YOY on a per day basis At or near prior year gross margin of 32% $170 million - $175 million Full Year FY24 Expectation ~$70 million ~$50 million 2 ~ 50% - 60% of FY24 Adj. EBITDA¹ ¹For a reconciliation of Adjusted EBITDA, Adjusted Net Income or Free Cash Flow to the most directly comparable GAAP metrics, see Appendix. 16

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