Alcoa Corp

r Information.

In the fourth quarter 2025, all 4,041,989 issued and outstanding shares of Alcoa Series A convertible preferred stock were converted into 4,041,989 shares of common stock, and the associated preferred shares were retired and cancelled. On February 25, 2026, the Company filed a certificate of cancellation (the “Series A Convertible Preferred Certificate of Cancellation”) with the Secretary of State of the State of Delaware, effective as of the time of filing, canceling the Certificate of Designation of Series A Convertible Preferred Stock, and thereby eliminating all Series A Convertible Preferred Stock of the Company as a designated series and restoring the 10,000,000 previously designated shares to the status of authorized but unissued. The foregoing description is qualified in its entirety by reference to the full text of the Series A Convertible Preferred Certificate of Cancellation, which is filed as Exhibit 3.3 to this Annual Report on Form 10-K and incorporated herein by reference.

None of the Company’s directors or “officers,” as defined in Rule 16a-1(f) of the Exchange Act of 1934, as amended, adopted, modified, orterminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408 of Regulation S-K, during the Company’s fiscal quarter ended December 31, 2025.