FIRST HORIZON CORP — Form 8-K

First Horizon Corporation adopted amended and restated bylaws effective July 27, 2026. Key changes include: (1) Board size reduction from 14 to 12 directors after the 2026 annual meeting; (2) introduction of proxy access provisions (Section 3.16) allowing shareholders owning ≥3% of common stock continuously for 3 years to nominate up to 20% of directors (rounded down, minimum 2) for inclusion in proxy statements; (3) enhanced procedural requirements for shareholder nominations and voting; and (4) updates to officer roles, committees, emergency provisions, and miscellaneous governance provisions. The proxy access window is 150–120 calendar days before the anniversary of the prior year's proxy mailing, or for 'Other Meeting Dates' per specified rules.