Free Writing Prospectus (Form FWP)

Filed Pursuant to Rule 433
Registration No. 333-287053
March 5, 2026

First Horizon Corporation

16,000,000 Depositary Shares
Each Representing 1/4,000^th Interest in a Share of
Non-Cumulative Perpetual Preferred Stock, Series H

Pricing Term Sheet

This pricing term sheet supplements the information set forth under "Description of the Series H Preferred Stock" in the preliminary prospectus supplement, dated March 5, 2026, to the prospectus, dated May 7, 2025.

Change from Preliminary Prospectus Supplement

In addition to the information set forth above, the final prospectus supplement will reflect the following change (and information in the preliminary prospectus supplement is deemed to have changed to the extent affected thereby):

Over-Allotment Option

The underwriters will not have an over-allotment option to purchase additional depositary shares.

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* A securities rating is not a recommendation to buy, sell or hold securities and may be subject to revision or withdrawal at any time.

** The issuer expects that delivery of the Depositary Shares will be made against payment therefor on or about the fifth business day following the date of pricing of the Depositary Shares (this settlement cycle being referred to as "T+5"). Accordingly, purchasers who wish to trade the

Depositary Shares on the date of pricing will be required, by virtue of the fact that the Depositary Shares initially will settle in T+5, to specify an alternate settlement cycle at the time of any such trade to prevent a failed settlement. Purchasers of the Depositary Shares who wish to trade their Depositary Shares on any day prior to one business day before the settlement date should consult their own advisors.

¹ Reflects 11,058,700 Depositary Shares sold to institutional investors, for which the underwriters received an underwriting discount of $0.2500 per Depositary Share, and 4,941,300 Depositary Shares sold to retail investors, for which the underwriters received an underwriting discount of $0.7875 per Depositary Share.

The Depositary Shares are not deposits or obligations of a bank and are not insured or guaranteed by the Federal Deposit Insurance Corporation or by any other government agency or instrumentality.

First Horizon Corporation has filed a registration statement (including a prospectus and preliminary prospectus supplement) with the SEC for the offering to which this communication relates. Before you invest, you should read each of these documents and the other documents First Horizon Corporation has filed with the SEC and incorporated by reference in such documents for more complete information about First Horizon Corporation and this offering. You may get these documents for free by visiting EDGAR on the SEC website at www.sec.gov. Alternatively, you may obtain a copy of these documents by calling Morgan Stanley & Co. LLC toll-free at 1-866-718-1649, Citigroup Global Markets Inc. toll-free at 1-800-831-9146, J.P. Morgan Securities LLC collect at 1-212-834-4533, RBC Capital Markets, LLC toll-free at 1-866-375-6829 or UBS Securities LLC toll-free at 1-833-481-0269.