Kate Marie Shamsuddin - 01 Aug 2025 Form 4 Insider Report for Definitive Healthcare Corp. (DH)

Role: CHIEF OPERATING OFFICER
Signature: /s/ Kate Marie Shamsuddin
Issuer symbol: DH
Transactions as of: 01 Aug 2025
Net transactions value: -$17,731
Form type: 4
Filing time: 05 Aug 2025, 18:27:24 UTC
Previous filing: 17 Jun 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Shamsuddin Kate Marie	CHIEF OPERATING OFFICER	C/O DEFINITIVE HEALTHCARE CORP., 492 OLD CONNECTICUT PATH, SUITE 401, FRAMINGHAM	/s/ Kate Marie Shamsuddin	05 Aug 2025	0001878756

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	DH	Class A Common Stock	Tax liability	$17,731	-4,741	-0.68%	$3.74	694,149	01 Aug 2025	Direct	F1

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

Kate Marie Shamsuddin is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.

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.