4D Molecular Therapeutics (FDMT) DEFA14A Additional proxy soliciting materials

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. )

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4D Molecular Therapeutics, Inc.

(Name of Registrant as Specified In Its Charter)

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

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You invested in 4D MOLECULAR THERAPEUTICS, 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 material for the stockholder meeting to be held via the Internet on May 17, 2021 at 11:00 AM Pacific Time at www.virtualshareholdermeeting.com/FDMT2021.

Get informed before you vote

This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet or by mail. You may view the Proxy Statement and Annual Report online OR you can receive a free paper or email copy of the material(s) by requesting prior to May 3, 2021. If you would like to request a copy of the material(s) for this and/or future stockholder 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.

Smartphone users		Vote Virtually at the Meeting*
Point your camera here and		May 17, 2021
vote without entering a		11:00 AM Pacific Time
control number
	Virtually at: www.virtualshareholdermeeting.com/FDMT2021

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

V1

Vote at www.ProxyVote.com

THIS IS NOT A VOTABLE BALLOT

This is an overview of the proposals being presented at the upcoming stockholder meeting. Please follow the instructions on the reverse side to vote these important matters. We encourage you to access and review all of the important information contained in the proxy materials before voting.

			Board
	Voting Items		Recommends
	1.	Election of two Class I directors to hold office until the 2024 Annual Meeting of Stockholders or until their successors are elected.
		Nominees:	For
		01) David Kirn, M.D.
		02) David Schaffer, Ph.D.
	2.	Ratification of the selection, by the Audit Committee of the Company’s Board of Directors, of PricewaterhouseCoopers LLP as the independent registered public accounting firm of the Company for its fiscal year ending December 31, 2021.	For
NOTE: The proxies are authorized to vote in their discretion upon such other business as may properly come before the meeting or any adjournment thereof.

Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click “Sign up for E-delivery”.

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