Casey Heller - 05 Jan 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: 05 Jan 2026
Net transactions value: $0
Form type: 4
Filing time: 07 Jan 2026, 16:05:02 UTC
Previous filing: 04 Nov 2025
Next 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	07 Jan 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	+195,313	+18%	$0.000000	1,275,490	05 Jan 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 (the "Class A Common Stock"), with 50% of the RSUs vesting on January 1, 2027, followed by vesting in equal quarterly installments over the remaining 12 months thereafter, subject to the Reporting Person's continued service with the Issuer through each such vesting date.

Content

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 (the "Class A Common Stock"), with 50% of the RSUs vesting on January 1, 2027, followed by vesting in equal quarterly installments over the remaining 12 months thereafter, subject to the Reporting Person's continued service with the Issuer through each such vesting date.