OpenText Investor Presentation Deck

Reconciliation of Selected Non-GAAP Measures | Q4 FY'21 (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™ GA GAAP 127,583 32,938 53,662 53,215 621,814 117,235 183,237 73,019 52,469 3,152 171,681 45,017 (2,215) 181,283 0.66 Three Months Ended June 30, 2021 GAAP % of Total Revenue Adjustments FN 69.6% (935) (1) (505) (1) (698) (1) (53,215) (2) 55,353 (3) (2,664) (1) (4,718) (1) (3,830) (1) (52,469) (2) (3,152) (4) 122,186 (5) (45,017) (6) 38,099 (7) 39,070 0.14 (8) (8) $ Non-GAAP 126,648 32,433 52,964 677,167 114,571 178,519 69,189 293,867 35,884 220,353 0.80 Non-GAAP % of Total Revenue 75.8% 51

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