Alcoa — Jul 16, 2025 release

• Ma’aden joint venture: On July 1, 2025, Alcoa completed the sale of its full ownership interest of 25.1 percent in the Ma’aden joint venture, comprised of the Ma’aden Bauxite and Alumina Company and the Ma’aden Aluminium Company, to Ma’aden for total consideration of $1.35 billion, comprised of 85,977,547 shares (valued at $1.2 billion as of closing) and $150 million in cash (to be used primarily for related taxes and transaction costs). In the third quarter 2025, Alcoa expects to recognize a gain of approximately $780 million and subsequent changes in fair value of the shares within Other income. Consistent with prior transactions, Alcoa reflects gains or losses from non-core asset sales and mark-to-market financial instruments as special items. • Australian tax decision: On April 30, 2025, Alcoa received a favorable decision from the Administrative Review Tribunal of Australia (ART) in relation to a review of decisions of the Australian Taxation Office (ATO) regarding certain disputed tax liabilities. The dispute related to the transfer pricing of certain historic third-party alumina sales pursuant to which the ATO asserted that additional tax was owed. The ART decided that no additional tax is owed, consistent with Alcoa’s long-held position related to this matter. The ATO did not appeal the decision and the disputed claims (and additional related interest and penalties) have been withdrawn. In accordance with the ATO’s dispute resolution practices, Alcoa previously paid $69 (A$107) million, representing 50 percent of the assessed income tax amount, which was refunded with $9 (A$13) million of accrued interest in July 2025. Accrued cash taxes of $225 (A$346) million related to interest deducted again