Alcoa President and Chief Executive Officer William Oplinger to Participate in BofA Securities 2024 Global Metals, Mining & Steel Conference - Seite 2

Additional Information and Where to Find It

This session does not constitute an offer to buy or sell or the solicitation of an offer to buy or sell any securities. This session relates to the proposed transaction. In connection with the proposed transaction, Alcoa plans to file with the SEC a proxy statement on Schedule 14A (the “Proxy Statement”). This session is not a substitute for the Proxy Statement or any other document that Alcoa may file with the SEC and send to its stockholders in connection with the proposed transaction. The issuance of the stock consideration in the proposed transaction will be submitted to Alcoa’s stockholders for their consideration. The Proxy Statement will contain important information about Alcoa, the proposed transaction and related matters. Before making any voting decision, Alcoa’s stockholders should read all relevant documents filed or to be filed with the SEC completely and in their entirety, including the Proxy Statement, as well as any amendments or supplements to those documents, when they become available, because they will contain important information about Alcoa and the proposed transaction. Alcoa’s stockholders will be able to obtain a free copy of the Proxy Statement, as well as other filings containing information about Alcoa, free of charge, at the SEC’s website (www.sec.gov). Copies of the Proxy Statement and other documents filed by Alcoa with the SEC may be obtained, without charge, by contacting Alcoa through its website at https://investors.alcoa.com/.

Participants in the Solicitation

Alcoa, its directors, executive officers and other persons related to Alcoa may be deemed to be participants in the solicitation of proxies from Alcoa’s stockholders in connection with the proposed transaction. Information about the directors and executive officers of Alcoa and their ownership of common stock of Alcoa is set forth in the section entitled “Information about our Executive Officers” included in Alcoa’s annual report on Form 10-K for the fiscal year ended December 31, 2023, which was filed with the SEC on February 21, 2024 (and which is available at https://www.sec.gov/ixviewer/ix.html?doc=/Archives/edgar/data/1675149/ ...), and in the sections entitled “Director Nominees” and “Stock Ownership of Directors and Executive Officers” included in its proxy statement for its 2024 annual meeting of stockholders, which was filed with the SEC on March 19, 2024 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/1675149/00011931252407 ...). Additional information regarding the persons who may, under the rules of the SEC, be deemed participants in the proxy solicitation and a description of their direct and indirect interests, by security holdings or otherwise, will be included in the Proxy Statement and other relevant materials to be filed with the SEC in connection with the proposed transaction when they become available. Free copies of these documents may be obtained as described in the preceding paragraph.