Definitive Healthcare (DH) CFO has shares withheld to cover RSU tax obligations

Rhea-AI Filing Summary

Definitive Healthcare Corp. Chief Financial Officer Casey Heller reported a small share disposition related to tax withholding. On May 1, 2026, 1,469 shares of Class A Common Stock were withheld at $0.99 per share to satisfy tax obligations upon vesting of previously reported RSUs. After this non‑market transaction, Heller directly holds 2,005,853 shares of Class A Common Stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Heller Casey

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Tax Withholding	Class A Common Stock	1,469	$0.99	$1K

Holdings After Transaction: Class A Common Stock — 2,005,853 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares withheld for taxes: 1,469 shares Withholding price per share: $0.99 per share Shares held after transaction: 2,005,853 shares

3 metrics

Shares withheld for taxes 1,469 shares Tax withholding disposition on May 1, 2026

Withholding price per share $0.99 per share Value used for tax-withholding transaction

Shares held after transaction 2,005,853 shares Direct Class A Common Stock holdings post-transaction

Key Terms

restricted stock units (RSUs), tax withholding obligations, Class A Common Stock, transaction code F

4 terms

restricted stock units (RSUs) financial

"in connection with the vesting and settlement of previously reported RSUs"

Restricted stock units (RSUs) are a type of company promise to give employees shares of stock in the future, usually after certain conditions like working for a set time. They are like a gift promised today that you receive later, which can become valuable if the company's stock price goes up. RSUs matter because they are a way companies reward employees and can be a significant part of compensation.

tax withholding obligations financial

"withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations"

Class A Common Stock financial

"The transaction reported represents the withholding of shares by the issuer"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

transaction code F regulatory

"Payment of exercise price or tax liability by delivering securities"

Form 4 Insider Transactions: What Each Field Means →

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

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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 MASSACHUSETTS 01701

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

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

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

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

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

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	05/01/2026		F		1,469(1)	D	$0.99	2,005,853	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. The transaction reported 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 RSUs.

	/s/ Jonathan Paris, Attorney-in-Fact	05/05/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Definitive Healthcare (DH) report for CFO Casey Heller?

Definitive Healthcare reported that CFO Casey Heller had 1,469 shares of Class A Common Stock withheld. The shares were used to cover tax obligations triggered by the vesting and settlement of previously reported RSUs, rather than being sold in an open-market transaction.

Was the Definitive Healthcare (DH) CFO’s Form 4 transaction an open-market sale?

No, the Form 4 shows a tax-withholding disposition, not an open-market sale. Shares were withheld by the issuer to pay Heller’s tax obligations arising from RSU vesting and settlement, consistent with the transaction code F and the accompanying explanatory footnote.

How many Definitive Healthcare (DH) shares were withheld for the CFO’s taxes?

The filing shows 1,469 shares of Definitive Healthcare Class A Common Stock were withheld. These shares were applied toward Chief Financial Officer Casey Heller’s tax withholding obligations linked to the vesting and settlement of previously reported restricted stock units (RSUs).

What is CFO Casey Heller’s Definitive Healthcare (DH) shareholding after the Form 4 event?

After the tax-withholding disposition, Chief Financial Officer Casey Heller directly holds 2,005,853 shares of Definitive Healthcare Class A Common Stock. This post-transaction figure reflects the remaining direct ownership following the issuer’s withholding of 1,469 shares for tax obligations.

What does transaction code F mean in the Definitive Healthcare (DH) Form 4?

Transaction code F indicates payment of an exercise price or tax liability using shares. Here, it reflects Definitive Healthcare withholding 1,469 shares from CFO Casey Heller to satisfy tax obligations associated with the vesting and settlement of previously reported restricted stock units (RSUs).