Company Update

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 12, 2025       HOWMET AEROSPACE INC. (Exact name of registrant as specified in its charter)       Delaware 1-3610 25-0317820 (State of Incorporation) (Commission File Number) (IRS Employer Identification No.)   201 Isabella Street , Suite 200 Pittsburgh , Pennsylvania 15212-5872 (Address of Principal Executive Offices) (Zip Code)   Office of Investor Relations (412) 553-1950 Office of the Secretary ( 412 ) 553-1940 (Registrant’s telephone number, including area code)   (Former Name or Former Address, if Changed Since Last Report)   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:   ¨ 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 Stock , par value $1.00 per share HWM New York Stock Exchange $3.75 Cumulative Preferred Stock , par value $100 per share HWM PR NYSE American   Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).   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 8.01. Other Events   On May 12, 2025, John Plant, Executive Chairman and Chief Executive Officer of Howmet Aerospace Inc. (the “Company”), sold 800,000 shares of common stock of the Company (“Common Stock”) for estate planning, tax planning and financial diversification purposes.     This is Mr. Plant’s first sale of Common Stock during his extensive tenure at the Company whether serving as a director or officer. Following this sale, Mr. Plant retains significant shares of Common Stock as well as restricted share units that, upon vesting and combined with his 2,816,585 shares of Common Stock held directly or through his family trusts, would provide Mr. Plant with a potential total interest of 3,164,560 shares in the Company. Mr. Plant continues to be among the top 25 largest shareholders of the Company, showcasing his confidence in the Company and his commitment to delivering long-term value to its shareholders.       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.     HOWMET AEROSPACE INC.             Dated:   May 12, 2025 By: /s/ Lola F. Lin   Name: Lola F. Lin   Title: Executive Vice President, Chief Legal and Compliance Officer and Secretary