Investor Presentaiton

OSB - Q4 2023 VS. Q4 2022 ($ in millions) Overall 11% Commodity 15% Structural Solutions flat $13 5%2 $17 2022 Adjusted EBITDA1 Net sales $257 PAGE 53 Overall (88)mmsf, (18)% $46 Overall 105mmsf, 35% OEE 76%, +5ppts Mix 52%, +15ppts $7 $21 $59 2 22% $(18) $20 Raw materials: $8M Labor $(1)M Mill costs $7M: Inventory reserves $6M SG&A $4M Other 2023 Adjusted EBITDA 1 $272 ASP (w/o freight) Commodity Volume Structual Solutions Volume Inflationary Costs $17 $(40) $39 $(1) 1 This is a non-GAAP financial measure. See "Statement Relating to the Use of Non-GAAP Financial Measures" and "Reconciliation of Net Income to Non-GAAP Adjusted EBITDA." 2 This is a non-GAAP financial measure and is calculated as Adjusted EBITDA1 divided by net sales. LP BUILDING SOLUTIONS

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