Zoominfo Results Presentation Deck

Q1 EARNINGS CALL > NON-GAAP FINANCIAL MEASURES Reconciliation from GAAP Net Income (Loss) to Adjusted Operating Income ($M except percent figures) Net income (loss) Add (less): Expense (benefit) from income taxes Add: Interest expense, net Add: Loss on debt modification and extinguishment Add (less): Other expense (income), net Income (loss) from operations Add: Impact of fair value adjustments to acquired unearned revenue Add: Amortization of acquired technology Add: Amortization of other acquired intangibles Add: Equity-based compensation Add: Restructuring and transaction-related expenses Add: Integration costs and acquisition-related expenses Adjusted Operating Income Revenue Impact of fair value adjustments to acquired unearned revenue Revenue for adjusted operating margin calculation Adjusted Operating Income Margin Z zoominfo Q1 2021 $(33.9) 49.7 6.5 5.9 (0.2) 28.0 0.6 6.7 4.8 18.1 4.4 3.4 $66.1 153.3 0.6 154.0 43% Q1 2022 $6.2 13.0 11.8 1.4 32.4 1.1 11.2 5.3 42.5 2.5 0.6 $95.7 241.7 1.1 242.8 39% 32

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