Definitive Healthcare awards 189,190 RSUs to director

Winters Kathleen A reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Winters Kathleen A reported acquisition or exercise transactions in this Form 4 filing.

Definitive Healthcare Corp. reported that director Kathleen A. Winters received a grant of 189,190 restricted stock units (RSUs) of Class A Common Stock. The award carries no purchase price and increases her direct holdings to 308,982 shares. These RSUs vest on the earlier of June 4, 2027 or the company’s next annual meeting of stockholders, assuming she continues in service until that vesting date. This is a compensation-related equity grant rather than an open-market transaction.

Insider Trade Summary

Grant/Award: 189,190 shares

Grant/Award 1 txn

Insider Winters Kathleen A

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Class A Common Stock	189,190	$0.00	$0.00

Holdings After Transaction: Class A Common Stock — 308,982 shares (Direct)

Footnotes (1)

1. 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, vesting on the earlier of June 4, 2027 or the date of the Issuer's next annual meeting of stockholders, subject to the Reporting Person's continued service through the applicable vesting date.

Key Figures

RSUs granted: 189,190 shares Grant price: $0.0000 per share Total holdings after grant: 308,982 shares +1 more

4 metrics

RSUs granted 189,190 shares Restricted stock units granted on June 4, 2026

Grant price $0.0000 per share RSU award carries no purchase price

Total holdings after grant 308,982 shares Class A Common Stock following RSU award

Vesting date June 4, 2027 Or earlier, at the next annual stockholders’ meeting

Key Terms

restricted stock units ("RSUs"), Class A Common Stock, annual meeting of stockholders, par value $0.001

4 terms

restricted stock units ("RSUs") financial

"Represents restricted stock units ("RSUs"), each representing a contingent right"

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

Class A Common Stock financial

"to receive one share of the Issuer's Class A Common Stock"

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.

annual meeting of stockholders financial

"vesting on the earlier of June 4, 2027 or the date of the Issuer's next annual meeting of stockholders"

par value $0.001 financial

"Issuer's Class A Common Stock, par value $0.001, vesting on the earlier"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Definitive Healthcare (DH) report for Kathleen Winters?

Definitive Healthcare reported that director Kathleen A. Winters received 189,190 restricted stock units of Class A Common Stock. The grant is a compensation award, not an open-market purchase, and reflects additional equity-based incentives tied to her continued board service.

How many shares does Kathleen Winters hold after this Form 4 for Definitive Healthcare (DH)?

After the RSU grant, Kathleen A. Winters is reported as holding 308,982 shares of Class A Common Stock. This figure includes the newly awarded restricted stock units, highlighting her overall equity exposure as a company director following the June 4, 2026 grant.

When do Kathleen Winters’ RSUs in Definitive Healthcare (DH) vest?

The restricted stock units granted to Kathleen A. Winters vest on the earlier of June 4, 2027 or Definitive Healthcare’s next annual meeting of stockholders. Vesting is contingent on her continued service through the applicable vesting date, aligning the award with ongoing board participation.

Did Kathleen Winters buy or sell Definitive Healthcare (DH) shares in this filing?

This filing does not show an open-market buy or sell by Kathleen A. Winters. Instead, it reports a grant of 189,190 restricted stock units at no purchase price, which is a compensation-related acquisition rather than a discretionary trading decision in the public market.

What type of security was granted to Kathleen Winters by Definitive Healthcare (DH)?

She received restricted stock units, each representing a contingent right to receive one share of Definitive Healthcare’s Class A Common Stock. These RSUs carry a vesting schedule tied to the earlier of June 4, 2027 or the next annual stockholder meeting, subject to continued service.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/08/2026 - 04:50 PM EDT Learn about SEC filing dates

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^*

Winters Kathleen A

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/04/2026

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	06/04/2026		A		189,190(1)	A	$0	308,982	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, vesting on the earlier of June 4, 2027 or the date of the Issuer's next annual meeting of stockholders, subject to the Reporting Person's continued service through the applicable vesting date.

	/s/ Jonathan Paris, Attorney-in-Fact	06/08/2026
	** 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)