Definitive Healthcare CEO reports 5K-share stake

Definitive Healthcare’s CEO and director reported initial beneficial ownership of 5,000 Class A shares held indirectly through an IRA.

Available on EDGAR 09/16/2026 - 04:05 PM EDT Accepted by SEC EDGAR 09/16/2026 - 04:05 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Definitive Healthcare Corp. (DH) filed an initial ownership report for Ritchey Clay Brian, who serves as both Chief Executive Officer and director. The filing indicates beneficial ownership of 5,000 shares of Class A Common Stock, held indirectly via an IRA, with no specific buy or sell transactions reported.

Insider Trade Summary

Holdings reported, no transactions

Holdings

Insider Ritchey Clay Brian

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Holding	Class A Common Stock	--	--	--

Holdings: Class A Common Stock — 5,000 shares (Indirect, By IRA)

Key Figures

Class A Common Stock held: 5,000 shares Direct holdings entries: 0 entries Indirect holdings entries: 1 entry +3 more

6 metrics

Class A Common Stock held 5,000 shares Beneficial ownership reported for CEO/director Ritchey Clay Brian

Direct holdings entries 0 entries All reported ownership is indirect via an IRA

Indirect holdings entries 1 entry Single holding line for Class A Common Stock by IRA

Holding entries on Form 3 1 entry Transaction summary lists one holding entry and no transactions

Reported buy transactions 0 shares No purchases reported in this initial statement

Reported sell transactions 0 shares No sales reported in this initial statement

Key Terms

Class A Common Stock, indirect, IRA

3 terms

Class A Common Stock financial

"The filing indicates beneficial ownership of 5,000 shares of 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.

indirect financial

"held indirectly via an IRA"

IRA financial

"held indirectly via an IRA"

An individual retirement account (IRA) is a savings account designed to help people put aside money for their retirement, often with tax advantages that encourage long-term savings. It matters to investors because it can grow over time, providing financial security later in life, and offers benefits that can reduce current taxes or allow investments to compound more effectively.

FAQ

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

What insider position was reported at Definitive Healthcare Corp. (DH)?

The filing reports that CEO and director Ritchey Clay Brian has beneficial ownership of 5,000 shares of Class A Common Stock, held indirectly through an IRA, as part of his initial ownership statement.

Does the Form 3 for DH show any recent insider buying or selling?

No. The Form 3 for Definitive Healthcare Corp. lists a holding of 5,000 Class A Common Stock shares but does not report any specific buy or sell transactions associated with this position.

How many DH shares does the CEO beneficially own according to this filing?

According to the Form 3, Ritchey Clay Brian beneficially owns 5,000 shares of Definitive Healthcare Corp. Class A Common Stock, all reported as indirectly held through an IRA.

Is the CEO’s ownership in DH direct or indirect?

The reported ownership is indirect. The Form 3 states that the 5,000 Class A Common Stock shares are held "By IRA," meaning through an individual retirement account rather than directly in his own name.

What type of security is reported in the DH Form 3?

The Form 3 reports holdings of Class A Common Stock of Definitive Healthcare Corp., totaling 5,000 shares held indirectly via an IRA by the company’s CEO and director.

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

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SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Ritchey Clay Brian

(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. Date of Event Requiring Statement (Month/Day/Year)
09/08/2026

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

3a. Foreign Trading Symbol

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

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

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

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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Class A Common Stock	5,000	I	By IRA

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	/s/ Jonathan Paris, Attorney-in-Fact	09/16/2026
	** 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 5 (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 3: SEC 1473 (03-26)