Reg FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549   FORM 8-K   CURRENT REPORT Pursuant to Section 13 or 15(d)  of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 29, 2026   KeyCorp (Exact name of registrant as specified in charter)   Ohio 001-11302 34-6542451 State or other jurisdiction of incorporation or organization: Commission File Number I.R.S. Employer Identification Number: 127 Public Square, Cleveland, Ohio 44114-1306 Address of principal executive offices: Zip Code: ( 216 ) 689-3000 Registrant’s telephone number, including area code: Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities Registered Pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered Common Shares, $1 par value KEY New York Stock Exchange Depositary Shares (each representing a 1/40th interest in a share of Fixed-to-Floating Rate Perpetual Non-Cumulative Preferred Stock, Series E) KEY PrI New York Stock Exchange Depositary Shares (each representing a 1/40th interest in a share of Fixed Rate Perpetual Non-Cumulative Preferred Stock, Series F) KEY PrJ New York Stock Exchange Depositary Shares (each representing a 1/40th interest in a share of Fixed Rate Perpetual Non-Cumulative Preferred Stock, Series G) KEY PrK New York Stock Exchange Depositary Shares (each representing a 1/40th interest in a share of Fixed Rate Reset Perpetual Non-Cumulative Preferred Stock, Series H) KEY PrL New York Stock Exchange Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).     Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ Item 7.01 Regulation FD Disclosure. On May 29, 2026, KeyCorp posted an investor presentation to its website. A copy of the presentation is attached hereto as Exhibit 99.1. From time to time, KeyCorp may use this presentation in conversations with investors and analysts. The presentation may be accessed through the Investor Relations page of KeyCorp’s website at www.key.com/ir. The information in this Item 7.01 and Exhibit 99.1 attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities under that Section, nor shall it be deemed incorporated by reference into the filings of KeyCorp under the Securities Act of 1933, as amended. The content of the KeyCorp website referenced herein and in the exhibit are not incorporated into this Current Report on Form 8-K. Item 9.01 Financial Statements and Exhibits. Exhibit No. Description of Exhibit 99.1 KeyCorp Investor Presentation 104 Cover Page Interactive Data File (embedded within Inline XBRL document). SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. KEYCORP Date: May 29, 2026 /s/ Andrea R. McCarthy By: Andrea R. McCarthy Title: Assistant Secretary