Alcoa — Oct 15, 2026 release

Alcoa expects Interest expense to approximate $185 million for the year, an increase from the prior projection, as a result of the Notes issuance. Based on current alumina and aluminum market conditions, Alcoa expects fourth quarter 2026 operational tax expense to approximate $65 million to $75 million, which may vary with market conditions and jurisdictional profitability. Conference Call Alcoa will hold its quarterly conference call at 5:00 p.m. Eastern Daylight Time (EDT) / 8:00 a.m. Australian Eastern Daylight Time (AEDT) on Thursday, October 15, 2026 / Friday, October 16, 2026, to present third quarter 2026 financial results and discuss the business, developments, and market conditions. The call will be webcast via the Company’s homepage on www.alcoa.com. Presentation materials for the call will be available for viewing on the same website at approximately 4:15 p.m. EDT on October 15, 2026 / 7:15 a.m. AEDT on October 16, 2026. Call information and related details are available under the “Investors” section of www.alcoa.com. Dissemination of Company Information Alcoa intends to make future announcements regarding company developments and financial performance through its website, www.alcoa.com, as well as through press releases, filings with the Securities and Exchange Commission, conference calls, media broadcasts, and webcasts. Alcoa does not incorporate the information contained on, or accessible through, its corporate website or such other websites or platforms reference