Supplement
To
Proxy Statement Dated
August 24, 2023,
For
2023 ANNUAL MEETING OF STOCKHOLDERS
OF
FORTE BIOSCIENCES,
INC.
TO BE HELD AT 10:00 A.M., PACIFIC TIME, ON TUESDAY, SEPTEMBER 19, 2023
The date of this Supplement is August 31, 2023
Forte Biosciences, Inc. (“we”) is furnishing this supplement dated August 31, 2023 (the “Supplement”) to its
definitive proxy statement, dated August 24, 2023 (the “Definitive Proxy Statement”) in connection with the 2023 Annual Meeting of Stockholders (as it may be adjourned or postponed from time to time, the “Annual Meeting”),
to be held on Tuesday, September 19, 2023 at 10:00 a.m., Pacific Time.
Except as specifically supplemented by the information
contained in the Supplement, all information set forth in the Definitive Proxy Statement remains unchanged. We urge you to read this Supplement carefully in its entirety together with the Definitive Proxy Statement. The Definitive Proxy Statement is
available on the internet at www.proxyvote.com. From and after the date of this Supplement, all references to the “Proxy Statement” are to the Definitive Proxy Statement as supplemented by this Supplement.
Changes to Definitive Proxy Statement
The following
changes are hereby made to the Definitive Proxy Statement:
Questions And Answers About The Proxy Materials And Our Annual Meeting; Who Is Entitled To
Vote At The Annual Meeting?: The following language is hereby added to the end of the response to the question “Who Is Entitled To Vote At The Annual Meeting?”
“SEC Rule 14a-13(a)(3) requires that companies give 20 business days’ advance notice of the record date to
brokers, dealers, voting trustees, banks, associations and other entities that exercise fiduciary powers in nominee names or otherwise, collectively referred to as nominee holders. Forte commenced broker searches on July 31, 2023. At the time,
no record date had been set by the Board. On August 16, 2023, the Board established the Record Date, and an amended broker search was commenced at that time with respect to the Record Date. Accordingly, the Company’s broker searches were
initiated fewer than 20 business days prior to the Record Date, which did not comply with Rule 14a-13(a)(3). The broker searches have since been completed and produced a complete data set of stockholders,
banks and brokers as of the Record Date. Accordingly, the Company’s technical failure to comply with Rule 14a-13(a)(3) will have no material impact on stockholder’s ability to vote as of the Record
Date.”