GMS Results Presentation Deck

Consolidated GMS Expectations for Q3 FY24 and Full Year Fiscal 2024 Metric for Q3 FY24 Net Sales Gross Margin Adjusted EBITDA1 Metric for Full Year FY24 Interest Expense Capital Expenditures Free Cash Flow ¹ Tax Rate² GMS GYPSUM MANAGEMENT & SUPPLY, INC. Q3 FY24 Expectation Up low single-digits Similar to Q224's Gross Margin of 32.3% $123 million - $127 million Full Year FY24 Expectation ~$70 - $72 million ~$55 million ~ 50% - 60% of FY24 Adj. EBITDA¹ ~25.5% -26.0% ¹For a reconciliation of Adjusted EBITDA, Adjusted Net Income or Free Cash Flow to the most directly comparable GAAP metrics, see Appendix. 2Tax rate refers to the normalized cash tax rate excluding the impact of acquisition accounting and certain other deferred tax amounts. 9

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