[Form 4] Definitive Healthcare Corp. Insider Trading Activity

Rhea-AI Filing Summary

Definitive Healthcare (DH) reported an insider transaction by its Executive Chairman and Director. On 11/01/2025, 18,796 shares of Class A common stock were withheld by the company at $2.77 per share to cover tax obligations upon the vesting and settlement of previously reported RSUs. Following this administrative transaction, the reporting person beneficially owns 1,060,584 shares directly and 450,000 shares indirectly through DH Holdings (f/k/a Jason R. Krantz 2009 Trust), of which he is the beneficiary.

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^*

Krantz Jason Ronald

(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)

X	Director	X	10% Owner
	Officer (give title below)	X	Other (specify below)
			EXECUTIVE CHAIRMAN

3. Date of Earliest Transaction (Month/Day/Year)
11/01/2025

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	11/01/2025		F(1)		18,796	D	$2.77	1,060,584	D
DH Holdings (f/k/a Jason R. Krantz 2009 Trust)								450,000	I	See footnote(2)

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 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.

2. Amount beneficially owned in trust by DH Holdings (f/k/a Jason R. Krantz 2009 Trust), of which the reporting person is the beneficiary.

Remarks:

Exhibit 24 - Power of Attorney

	/s/ Jonathan Paris, Attorney-in-Fact	11/04/2025
	** 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 did DH's insider report in this Form 4?

The Executive Chairman reported 18,796 shares withheld by the issuer at $2.77 to satisfy taxes from RSU vesting on 11/01/2025.

How many DH shares does the insider hold after the transaction?

He beneficially owns 1,060,584 shares directly and 450,000 shares indirectly via DH Holdings (f/k/a Jason R. Krantz 2009 Trust).

What does the transaction code mean for DH (Form 4)?

Code F indicates share withholding by the issuer to cover tax obligations related to equity award vesting.

Was this a market sale of DH shares?

No. It was issuer share withholding (Code F) for taxes tied to RSU vesting, not an open-market sale.

What security was involved in the DH insider transaction?

Class A Common Stock of Definitive Healthcare Corp. (DH).

Who holds the indirect DH shares?

450,000 shares are held by DH Holdings (f/k/a Jason R. Krantz 2009 Trust), where the reporting person is the beneficiary.