Common Stock

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 19, 2021 (May 19, 2021)

HOWMET AEROSPACE INC.

(Exact name of registrant as specified in its charter)

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:

Securities registered pursuant to Section 12(b) of the Act:

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. ¨

Beginning on May 19, 2021, the 2020 Environmental, Social and Governance Report of Howmet Aerospace Inc. (the “Company” or “Howmet Aerospace”), which details Howmet Aerospace’s global environmental, social and governance commitment and performance, will be available online on the Company’s website at https://www.howmet.com/esg-report/.

A copy of the Company’s press release regarding the foregoing is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

In accordance with General Instruction B.2 of Form 8-K, the information in Item 7.01 of this Current Report on Form 8-K, including Exhibit 99.1, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing. In addition, the furnishing of this Item 7.01 of Form 8-K, including Exhibit 99.1, will not be deemed an admission that the Howmet Aerospace 2020 Environmental, Social and Governance Report includes material information that is not otherwise publicly available.

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.