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Tenaya Therapeutics, Inc. Important Notice Regarding the Availability of Proxy Materials P.O. BOX 8016, CARY, NC 27512-9903 Annual Meeting of Stockholders to be held on June 8, 2023 For Stockholders of record as of April 10, 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: 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 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 material, 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 29, 2023. To order paper materials, use one of the following methods. INTERNET TELEPHONE * E-MAIL (866) 648-8133 When requesting via the Internet or telephone you will need the 12 digit * If requesting material by e-mail, please send a blank e-mail with the 12 digit control number (located above) control number located in the shaded box above. in the subject line. No other requests, instructions OR other inquiries should be included with your e-mail requesting material. Tenaya Therapeutics, Inc. Meeting Type: Annual Meeting of Stockholders Date: Thursday, June 8, 2023 Time: 8:00 AM, Pacific Time Place: Annual Meeting to be held live via the Internet - please visit for more details You must register to attend the meeting online and/or participate at SEE REVERSE FOR FULL AGENDA


Tenaya Therapeutics, Inc. Annual Meeting of Stockholders The Board of Directors recommends a vote FOR each Nominee listed below in Proposal 1 and FOR Proposals 2 and 3. PROPOSAL 1. To elect three Class II directors to hold office until our 2026 annual meeting of stockholders and until their respective successors are elected and qualified. 1.01 Amy Burroughs, M.B.A. 1.02 Jin-Long Chen, Ph.D. 1.03 Catherine Stehman-Breen, M.D. 2. To ratify the appointment of Deloitte & Touche LLP as our independent registered public accounting firm for our fiscal year ending December 31, 2023. 3. To approve an amendment to our Amended and Restated Certificate of Incorporation to reflect recently adopted Delaware law provisions regarding officer exculpation. NOTE: In their discretion, the Named Proxies are authorized to vote upon such other business as may properly come before the Annual Meeting or any adjustments or postponements thereof.