GMS Results Presentation Deck

Summary Quarterly Financials. (In millions) (Unaudited) Wallboard Volume (MSF) Wallboard Price ($ /'000 Sq. Ft.) Wallboard Ceilings Steel framing Complementary products Net sales Cost of sales Gross profit Gross margin Operating expenses: Selling, general and administrative expenses Depreciation and amortization Total operating expenses Operating income Other (expense) income: Interest expense Other income, net Total other expense, net Income before taxes Income tax expense Net income Business Days Net Sales by Business Day Beginning Branch Count Added Branches Ending Branch Count GMS GYPSUM MANAGEMENT & SUPPLY, INC. $ $ $ $ 1Q22 1,095 356 $ 390 $ 138 196 318 1,042 706 336 32.2% 214 28 242 94 (14) 1 (13) 81 20 61 $ 262 15 277 2Q22 1,104 376 415 $ 141 272 323 1,151 779 372 32.3% 231 29 260 112 (15) 1 (14) 98 24 74 63 64 16.5 $ 18.0 277 2 279 $ $ 3Q22 1,054 394 $ 415 140 283 316 1,154 786 368 31.9% 241 30 271 97 (15) 1 (14) 83 21 61 62 18.6 279 1 280 $ $ $ 4Q22 1,181 4,433 416 $ 386 491 149 277 372 1,289 876 413 32.0% 264 32 297 116 (14) 1 (13) 103 26 76 $ 280 6 286 $ GA 64 20.1 $ FY22 GA 1,711 $ 568 1,028 1,328 4,635 3,147 1,488 32.1% 950 119 1,069 419 (58) 4 (54) 365 91 273 253 18.3 $ 262 24 286 CA $ EA 1Q23 1,191 438 $ 522 $ 167 275 396 1,360 925 435 32.0% 268 32 300 135 (15) 2 (13) 122 32 90 $ 63 21.6 $ 286 3 289 2Q23 1,232 474 $ 585 160 278 409 1,431 966 465 32.5% 279 32 311 153 (16) 2 (14) 139 36 103 $ 65 22.0 $ 289 2 291 3Q23 1,058 473 501 147 234 353 1,235 832 402 32.6% 267 31 299 103 (17) 2 (15) 88 24 65 62 19.9 291 6 297 $ $ $ $ 4Q23 1,130 481 545 155 224 380 1,304 880 424 32.5% 280 31 311 114 80 (18) $ $ (16) 98 23 76 $ 297 7 304 63 20.7 $ FY23 4,611 467 2,152 629 1,011 1,538 5,329 3,603 1,726 32.4% 1,094 127 1,221 505 (66) 8 (58) 448 115 333 253 21.1 286 18 304 12

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