OpenText Investor Presentation Deck

Reconciliation of Selected Non-GAAP Measures | Q1 FY'23 (In '000's U.S. dollars, except per share data) COST OF REVENUES Cloud services and subscriptions Customer support Professional service and other Amortization of acquired technology-based intangible assets GAAP-based gross profit and gross margin (%)/ Non-GAAP-based gross profit and gross margin (%) Operating expenses Research and development Sales and marketing General and administrative Amortization of acquired customer-based intangible assets Special charges (recoveries) GAAP-based income from operations / Non-GAAP-based income from operations Other income (expense), net Provision for income taxes GAAP-based net income (loss) / Non-GAAP-based net income, attributable to OpenText GAAP-based earnings (loss) per share / Non-GAAP-based earnings per share- diluted, attributable to OpenText opentext™ $ GAAP 131,799 27,354 53,800 42,637 593,688 110,198 167,170 78,074 54,438 14,281 146,353 (189,231) 33,625 (116,929) (0.43) Three Months Ended September 30, 2022 GAAP % of Total Revenue Adjustments FN Non-GAAP 69.7% (2,033) (1) $ (567) (1) (1,525) (1) (42,637) (2) 46,762 (3) (6,854) (1) (6,859) (1) (5,370) (1) (54,438) (2) (14,281) (4) 134,564 (5) 189,231 (6) 50 (7) 323,745 (8) 1.20 (8) 129,766 26,787 52,275 640,450 103,344 160,311 72,704 280,917 33,675 206,816 0.77 Non-GAAP % of Total Revenue 75.2% OpenText ©2022 All rights reserved 37

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