Advent International Gp, Llc - Jun 30, 2023 Form 3 Insider Report for Definitive Healthcare Corp. (DH)

Role: Director, 10%+ Owner
Signature: ADVENT INTERNATIONAL GP, LLC, By: /s/ Neil Crawford, Name: Neil Crawford, Title: Vice President, Finance
Stock symbol: DH
Transactions as of: Jun 30, 2023
Transactions value $: $0
Form type: 3
Date filed: 7/10/2023, 07:18 PM

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	DH	Common Stock						62.5M	Jun 30, 2023	See Notes	F1, F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	See Exhibit 99.1 for text of footnote (1).
F2	See Exhibit 99.1 for text of footnote (2).
F3	See Exhibit 99.1 for text of footnote (3).

Remarks:

Christopher Egan, a Managing Partner of Advent and Lauren Young, a Managing Director of Advent (together, the "Advent Directors"), each serve on the board of directors of the Issuer, and have been deputized to represent the Reporting Person on the board of directors. By virtue of the Advent Directors' representation, for purposes of Section 16 of the Securities Exchange Act of 1934, the Reporting Person may be deemed a director by deputization of the Issuer. The Advent Directors have filed separate Section 16 reports disclosing securities of the Issuer that they may be deemed to beneficially own for Section 16 purposes. Exhibit 99.1 (Footnotes to Form 3) is incorporated by reference.