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

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 under §240.14a-12

TRANSMEDICS GROUP, INC.

(Name of Registrant as Specified in Its Charter)

(Name of Person(s) Filing Proxy Statement if other than Registrant)

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☒ 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

You invested in TRANSMEDICS GROUP, INC. and it’s time to vote!

You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the availability of proxy materials for the shareholder meeting to be held on May 22, 2025.

Get informed before you vote

View the Notice and Proxy Statement and Form 10-K online OR you can receive a free paper or email copy of the material(s) by requesting prior to May 8, 2025. If you would like to request a copy of the material(s) for this and/or future shareholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to sendmaterial@proxyvote.com. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy.

*Please check the meeting materials for any special requirements for meeting attendance.

Vote at www.ProxyVote.com

THIS IS NOT A VOTABLE BALLOT

This is an overview of the proposals being presented at the upcoming shareholder meeting. Please follow the instructions on the reverse side to vote these important matters.

			Board
	Voting Items		Recommends
	1.	Election of Directors
		Nominees:
	1a.	Waleed H. Hassanein, M.D.		For
	1b.	James R. Tobin		For
	1c.	Edward M. Basile		For
	1d.	Thomas J. Gunderson		For
	1e.	Edwin M. Kania, Jr.		For
	1f.	Stephanie Lovell		For
	1g.	Merilee Raines		For
	1h.	David Weill, M.D.		For
	2.	To approve, on a non-binding advisory basis, the compensation paid to TransMedics' named executive officers.		For
	3.	To ratify the appointment of PricewaterhouseCoopers LLP as TransMedics Group, Inc.’s independent registered public accounting firm for the fiscal year ending December 31, 2025.		For
	NOTE: Such other business as may properly come before the meeting or any adjournment thereof.

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