Michael Graham O'Brien - 01 Nov 2025 Form 4 Insider Report for ZoomInfo Technologies Inc. (ZI)

Role: CFO
Signature: /s/ Meredith Weisshaar, as Attorney-in-Fact
Issuer symbol: ZI
Transactions as of: 01 Nov 2025
Net transactions value: -$19,209
Form type: 4
Filing time: 04 Nov 2025, 16:48:25 UTC
Previous filing: 03 Oct 2025
Next filing: 03 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
O'Brien Michael Graham	CFO	C/O ZOOMINFO TECHNOLOGIES INC.,, 330 W COLUMBIA WAY, FLOOR 8, VANCOUVER	/s/ Meredith Weisshaar, as Attorney-in-Fact	04 Nov 2025	0002034804

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	GTM	Common Stock	Options Exercise		+1,541	+2%		77,759	01 Nov 2025	Direct	F1
transaction	GTM	Common Stock	Options Exercise		+3,469	+4.5%		81,228	01 Nov 2025	Direct	F2
transaction	GTM	Common Stock	Tax liability	$5,913	-527	-0.65%	$11.22	80,701	01 Nov 2025	Direct	F3
transaction	GTM	Common Stock	Tax liability	$13,296	-1,185	-1.5%	$11.22	79,516	01 Nov 2025	Direct	F4

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	GTM	HSKB Phantom Units	Options Exercise	$0	-1,541	-20%	$0.000000	6,167	01 Nov 2025	Common Stock	1,541		Direct	F1, F5
transaction	GTM	Restricted Stock Units	Options Exercise	$0	-3,469	-11%	$0.000000	27,750	01 Nov 2025	Common Stock	3,469		Direct	F2, F6

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	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.
F2	Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.
F3	Reflects shares withheld to cover the Reporting Person's tax liability in connection with the vesting of the HSKB Phantom Units reported herein.
F4	Reflects shares withheld to cover the Reporting Person's tax liability in connection with the vesting of the restricted stock units reported herein.
F5	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.
F6	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.