OpenText Investor Presentation Deck

Reconciliation of Selected Non-GAAP Measures | FY'23 YTD (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™ GAAP 266,113 55,943 107,864 83,500 1,229,435 219,898 344,341 155,677 107,884 24,587 331,016 (25,882) 84,399 141,557 0.52 Six months ended December 31, 2022 GAAP % of Total Revenue Adjustments FN 70.3% (4,845) (1) (1,257) (1) (3,288) (1) (83,500) (2) 92,890 (3) (14,680) (1) (16,296) (1) (11,664) (1) (107,884) (2) (24,587) (4) 268,001 (5) 25,882 (6) (11,610) (7) 305,493 (8) (8) 1.14 Non-GAAP 261,268 54,686 104,576 1,322,325 205,218 328,045 144,013 599,017 72,789 447,050 1.66 Non-GAAP % of Total Revenue 75.6% OpenText ©2023 All rights reserved 46

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