Definitive Healthcare (DH) awards 195,313 RSUs to Chief Financial Officer

Rhea-AI Filing Summary

Definitive Healthcare Corp. reported that its Chief Financial Officer, Casey Heller, received an equity grant of 195,313 Class A common shares in the form of restricted stock units on January 5, 2026. These RSUs carry a grant price of $0 per share, reflecting a compensation award rather than an open-market purchase.

Each RSU represents the right to receive one share of Class A common stock, with 50% vesting on January 1, 2027. The remaining half vests in equal quarterly installments over the following 12 months, conditioned on Heller’s continued service with the company. After this grant, Heller directly beneficially owns 1,275,490 shares of Class A common stock.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Heller Casey

(Last) (First) (Middle)

C/O DEFINITIVE HEALTHCARE CORP.

492 OLD CONNECTICUT PATH, SUITE 401

(Street)

FRAMINGHAM MA 01701

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Definitive Healthcare Corp. [ DH ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
01/05/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	01/05/2026		A		195,313(1)	A	$0	1,275,490	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

	/s/ Jonathan Paris, Attorney-in-Fact	01/07/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Definitive Healthcare (DH) disclose?

Definitive Healthcare disclosed that Chief Financial Officer Casey Heller received an award of 195,313 restricted stock units (RSUs) of Class A common stock on January 5, 2026.

Is the Casey Heller Form 4 transaction a stock purchase or an award?

The Form 4 shows an award of Class A common stock RSUs to Casey Heller with a transaction code "A" and a price of $0 per share, indicating equity compensation rather than an open-market purchase.

How do the RSUs granted to Definitive Healthcare CFO vest?

The 195,313 RSUs vest with 50% on January 1, 2027, and the remaining 50% vesting in equal quarterly installments over the next 12 months, subject to continued service.

How many Definitive Healthcare shares does CFO Casey Heller own after this Form 4 transaction?

Following the reported RSU grant, Chief Financial Officer Casey Heller is shown as directly beneficially owning 1,275,490 shares of Definitive Healthcare Class A common stock.

What type of security did the Definitive Healthcare CFO receive in this filing?

The security reported is Class A common stock delivered through restricted stock units (RSUs), each representing a contingent right to receive one share of Class A common stock.

What role does the reporting person hold at Definitive Healthcare (DH)?

The reporting person, Casey Heller, is identified as an officer of Definitive Healthcare Corp., serving as the Chief Financial Officer.