Zoominfo Results Presentation Deck

Q1 EARNINGS CALL > NON-GAAP FINANCIAL MEASURES Reconciliation from GAAP Net Income (Loss) to Cash EBITDA ($M) Net income (loss) Add (less): Expense (benefit) from income taxes Add: Interest expense, net Add: Loss on debt modification and extinguishment Add: Depreciation Add: Amortization of acquired technology Add: Amortization of other acquired intangibles EBITDA Add (less): Other expense (income), net Add: Impact of fair value adjustments to acquired unearned revenue Add: Equity-based compensation expense Add: Restructuring and transaction related expenses (excluding depreciation) Add: Integration costs and acquisition-related expenses Adjusted EBITDA Add: Unearned revenue adjustment Add: Pro forma cost savings Add (less): Cash rent adjustment Add (less): Pre-Acquisition EBITDA Add (less): Other lender adjustments Cash EBITDA (1) Z zoominfo 1. Defined as Consolidated EBITDA in our Credit Agreements Trailing Twelve Months as of March 31, 2021 $(64.4) 54.8 51.2 18.6 10.9 24.4 18.9 114.5 (15.5) 1.9 128.4 14.0 9.4 252.6 83.3 1.0 (1.1) $335.7 Trailing Twelve Months as of March 31, 2022 $135.0 (30.6) 49.2 1.8 13.2 39.8 20.8 229.2 (37.6) 5.0 117.3 21.0 13.7 348.6 128.9 1.9 (0.3) (4.7) 1.2 $475.6 33

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