UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

(Amendment No.     )

Filed by the Registrant  ☒

Filed by a Party other than the Registrant  ☐

Check the appropriate box:

☐ Preliminary Proxy Statement

☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

☐ Definitive Proxy Statement

☒ Definitive Additional Materials

☐ Soliciting Material Pursuant to §240.14a-12

Definitive Healthcare Corp.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

Payment of Filing Fee (Check the appropriate box):

☒ No fee required

☐ Fee paid previously with preliminary materials

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

	Definitive Healthcare Corp.
P.O. BOX 8016, CARY, NC 27512-9903	Important Notice Regarding the Availability
	of Proxy Materials
	Stockholders Meeting to be held on
	June 1, 2023
	For Stockholders of record as of April 3, 2023
	This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. This is not a ballot. You cannot use this notice to vote your shares. We encourage you to access and review all of the important information contained in the proxy materials before voting.
	To view the proxy materials, and to obtain directions to attend the meeting, go to: www.proxydocs.com/DH
	To vote your proxy while visiting this site, you will need the 12 digit control number in the box below.
	Under United States Securities and Exchange Commission rules, proxy materials do not have to be delivered in paper. Proxy materials can be distributed by making them available on the Internet.

	For a convenient way to view proxy materials and VOTE go to www.proxydocs.com/DH Have the 12 digit control number located in the shaded box above available when you access the website and follow the instructions.
	If you want to receive a paper or e-mail copy of the proxy materials, you must request one. There is no charge to you for requesting a copy. In order to receive a paper package in time for this year’s meeting, you must make this request on or before May 22, 2023.

To order paper materials, use one of the following methods.

INTERNET	TELEPHONE	* E-MAIL
www.investorelections.com/DH	(866) 648-8133	paper@investorelections.com

When requesting via the Internet or telephone you will need the 12 digit control number located in the shaded box above. * If requesting material by e-mail, please send a blank e-mail with the 12 digit control number (located above) in the subject line. No other requests, instructions OR other inquiries should be included with your e-mail requesting material.

Definitive Healthcare Corp.

Meeting Type:   Annual Meeting of Stockholders

Date:   Thursday, June 1, 2023

Time:   3:00 PM, Eastern Time

Place: 492 Old Connecticut Path
Framingham, MA 01701

SEE REVERSE FOR FULL AGENDA

Definitive Healthcare Corp.

Annual Meeting of Stockholders

THE BOARD OF DIRECTORS RECOMMENDS A VOTE:

FOR ON PROPOSALS 1 AND 3

THE BOARD RECOMMENDS THAT AN ADVISORY VOTE ON THE COMPENSATION FOR NAMED EXECUTIVE OFFICERS

BE HELD EVERY 1 YEAR.

PROPOSAL

1. To elect four Class II directors of Definitive Healthcare Corp., each to serve a three-year term expiring at the 2026 annual meeting of stockholders and until such director’s successor is duly elected and qualified, or until such director’s earlier death, resignation or removal.

1.01 Chris Egan

1.02 Samuel A. Hamood

1.03 Jill Larsen

1.04 Sastry Chilukuri

2. To indicate, on an advisory basis, the preferred frequency of shareholder advisory votes on the compensation of the Company’s named executive officers.

3. To ratify the appointment of Deloitte & Touche LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2023.

NOTE: Your proxy holder will also vote in their discretion upon such other matters as may be properly brought before the meeting or any adjournment or postponement thereof (including, without limitation, with discretionary authority with respect to Proposal 1 to vote for a substitute nominee if any nominee is unable to serve or for good cause will not serve).