X0508 4 2026-02-01 0 0001794515 ZoomInfo Technologies Inc. GTM 0002034804 O'Brien Michael Graham C/O ZOOMINFO TECHNOLOGIES INC., 330 W COLUMBIA WAY, FLOOR 8 VANCOUVER WA 98660 0 1 0 0 CFO 0 Common Stock 2026-02-01 4 M 0 1542 A 88014 D Common Stock 2026-02-01 4 M 0 3468 A 91482 D Common Stock 2026-02-01 4 F 0 609 8.05 D 90873 D Common Stock 2026-02-01 4 F 0 1369 8.05 D 89504 D HSKB Phantom Units 2026-02-01 4 M 0 1542 0 D Common Stock 1542 4625 D Restricted Stock Units 2026-02-01 4 M 0 3468 0 D Common Stock 3468 24282 D Reflects Phantom Units of HSKB Funds II, LLC ("HSKB Phantom Units") that upon vesting settled into shares of Common Stock on a one-for-one basis. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock. Reflects shares withheld to cover the Reporting Person's tax liability in connection with the vesting of the HSKB Phantom Units reported herein. Reflects shares withheld to cover the Reporting Person's tax liability in connection with the vesting of the restricted stock units reported herein. The Reporting Person received an original grant of HSKB Phantom Units on December 1, 2023, which vest in equal quarterly installments during the 24 months following November 1, 2024. The Reporting Person received an original grant of restricted stock units on December 29, 2023, which vest in equal quarterly installments during the 36 months following November 1, 2024. /s/ Meredith Weisshaar, as Attorney-in-Fact 2026-02-03