OpenText Investor Presentation Deck

Reconciliation of Selected Non-GAAP Measures | Q2 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 / Non-GAAP-based net income, attributable to OpenText GAAP-based earnings per share / Non-GAAP-based earnings per share-diluted, attributable to OpenText opentext™ 69 GAAP 134,314 28,589 54,064 40,863 635,747 109,700 177,171 77,603 53,446 10,306 184,663 163,349 50,774 258,486 0.96 Three Months Ended December 31, 2022 GAAP % of Total Revenue Adjustments FN 70.8% GA (2,812) (1) (690) (1) (1,763) (1) (40,863) (2) 46,128 (3) (7,826) (1) (9,437) (1) (6,294) (1) (53,446) (2) (10,306) (4) 133,437 (5) (163,349) (6) (11,660) (7) (18,252) (8) (0.07) (8) Non-GAAP 131,502 27,899 52,301 681,875 101,874 167,734 71,309 318,100 39,114 240,234 0.89 Non-GAAP % of Total Revenue 76.0% OpenText ©2023 All rights reserved 44

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