0001675149 2026-08-28 2026-08-28 0001675149 1 2026-08-28 2026-08-28 iso4217:USD pure shares S-4 S-4 EX-FILING FEES 0001675149 Alcoa Corp N/A N/A S-4 Alcoa Corp false Equity Common stock, par value $0.01 per share true 17008960 0.00 0.0001381 0.00 0.00 0.00 0.00 0.00 0.00 true 1 The registration statement relates to the registration of the total number of shares of common stock, par value, $0.01 per share, of the registrant (the "Alcoa common stock") issuable by the registrant in connection with the transactions described in the registration statement, including the acquisition of all of South32 Limited's equity interests in bauxite mine, alumina refinery and certain aluminum smelter operations ("AliGroup"). 2 The amount registered represents the number of shares of Alcoa common stock issuable upon the completion of the transactions described in the registration statement, being 17,008,960 shares of Alcoa common stock. 3 Estimated solely for purposes of calculating the registration fee required by Section 6(b) of the Securities Act of 1933, and calculated pursuant to Rules 457(f)(2) and 457(f)(3) under the Securities Act of 1933. No shares in AliGroup are listed for trading on any exchange or automated quotation service. Therefore, the proposed maximum aggregate offering price is calculated as (A) $2,525,000,000.00, the approximate book value of AliGroup computed as of June 30, 2026, the latest practicable date prior to the date of filing the registration statement, less (B) $3,100,000,000, the aggregate amount of cash to be paid by the registrant in connection with the transactions described in the registration statement. As the foregoing calculation results in a negative number, the maximum aggregate offering price has been estimated as $0.00. 17008960 0.00 0.00 0.00