Casey Heller - 24 Feb 2026 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: 24 Feb 2026
Net transactions value: $0
Form type: 4
Filing time: 26 Feb 2026, 16:54:05 UTC
Previous filing: 03 Feb 2026
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	26 Feb 2026	0002052043

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	DH	Class A Common Stock	Award	$0	+733,301	+58%	$0.000000	2,007,322	24 Feb 2026	Direct	F1

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

Explanation of Responses:

Id	Content
F1	Represents restricted stock units ("RSUs"), each representing a contingent right to receive one share of the Issuer's Class A Common Stock, par value $0.001, with 25% of the RSUs vesting on March 1, 2027, followed by vesting of 6.25% every three months thereafter over the subsequent three years, subject to the Reporting Person's continued service with the Issuer through each such vesting date.