Casey Heller - 01 Oct 2025 Form 4 Insider Report for Definitive Healthcare Corp. (DH)

Role: Chief Financial Officer
Signature: /s/ Jonathan Paris, Attorney-in-Fact
Issuer symbol: DH
Transactions as of: 01 Oct 2025
Transactions value $: -$29,548
Form type: 4
Filing time: 03 Oct 2025, 08:23:35 UTC
Previous filing: 05 Aug 2025
Next filing: 04 Nov 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Heller Casey	Chief Financial Officer	C/O DEFINITIVE HEALTHCARE CORP., 492 OLD CONNECTICUT PATH, SUITE 401, FRAMINGHAM	/s/ Jonathan Paris, Attorney-in-Fact	03 Oct 2025	0002052043

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	DH	Class A Common Stock	Tax liability	-$29.5K	-8.3K	-0.76%	$3.56	1.08M	01 Oct 2025	Direct	F1

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

Explanation of Responses:

Id	Content
F1	Represents the withholding of shares by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units.