Alcoa Corporation (NYSE:AA, ASX: AAI)) ("Alcoa" or the "Company") will host an Investor Day on Thursday, October 30, 2025, which will be webcast live. The event is expected to include discussions on Alcoa's markets, operations, strategies, and capital allocation, among other topics. Speakers will include William F. Oplinger, Alcoa President and Chief Executive Officer; Molly Beerman, Executive Vice President and Chief Financial Officer; Renato Bacchi, Executive Vice President and Chief Commercial Officer; Tammi Jones, Executive Vice President and Chief Human Resources Officer; and Matt Reed, Executive Vice President and Chief Operations Officer. In addition to the speakers listed, members of Alcoa's executive team will host a live Q&A session during the event.

Investor Day Webcast Information:

Time: Thursday, October 30, 2025: 9:00 a.m. – 12:40 p.m. EDT

Participants: William F. Oplinger, Alcoa President and Chief Executive Officer; Molly Beerman, Executive Vice President and Chief Financial Officer; Renato Bacchi, Executive Vice President and Chief Commercial Officer; Tammi Jones, Executive Vice President and Chief Human Resources Officer; and Matt Reed, Executive Vice President and Chief Operations Officer; and other members of the Alcoa executive team

Registration: available on the "Investors" section of Alcoa's website, www.alcoa.com

Or Register here

The live webcast and presentation slides will be available on the day of the event at www.alcoa.com under Investors, Events & Presentations. Dial-in information and a more detailed agenda will be provided at a later date.

Following the event, a replay of the session, as well as the video presentations and transcript, will be available for one year on the "Investors" section of the Alcoa website.

About Alcoa Corporation

Alcoa (NYSE:AA, ASX: AAI)) is a global industry leader in bauxite, alumina, and aluminum products with a vision to build a legacy of excellence for future generations. With a values-based approach that encompasses integrity, operating excellence, care for people and courageous leadership, our purpose is to Turn Raw Potential into Real Progress. Since developing the process that made aluminum an affordable and vital part of modern life, our talented Alcoans have developed breakthrough innovations and best practices that have led to greater efficiency, safety, sustainability and stronger communities wherever we operate.

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.

Cautionary Statement on Forward-Looking Statements

These sessions will contain statements that relate to future events and expectations and as such constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements include those containing such words as "aims," "ambition," "anticipates," "believes," "could," "develop," "endeavors," "estimates," "expects," "forecasts," "goal," "intends," "may," "outlook," "potential," "plans," "projects," "reach," "seeks," "sees," "should," "strive," "targets," "will," "working," "would," or other words of similar meaning. All statements by Alcoa Corporation that reflect expectations, assumptions or projections about the future, other than statements of historical fact, are forward-looking statements, including, without limitation, statements regarding forecasts concerning global demand growth for bauxite, alumina, and aluminum, and supply/demand balances; statements, projections or forecasts of future or targeted financial results, or operating performance (including our ability to execute on strategies related to environmental, social and governance matters); statements about strategies, outlook, and business and financial prospects; and statements about capital allocation and return of capital. These statements reflect beliefs and assumptions that are based on Alcoa Corporation's perception of historical trends, current conditions, and expected future developments, as well as other factors that management believes are appropriate in the circumstances. Forward-looking statements are not guarantees of future performance and are subject to known and unknown risks, uncertainties, and changes in circumstances that are difficult to predict. Although Alcoa Corporation believes that the expectations reflected in any forward-looking statements are based on reasonable assumptions, it can give no assurance that these expectations will be attained and it is possible that actual results may differ materially from those indicated by these forward-looking statements due to a variety of risks and uncertainties. Such risks and uncertainties include, but are not limited to: (1) the impact of global economic conditions on the aluminum industry and aluminum end-use markets; (2) volatility and declines in aluminum and alumina demand and pricing, including global, regional, and product-specific prices, or significant changes in production costs which are linked to the London Metal Exchange or other commodities; (3) the disruption of market-driven balancing of global aluminum supply and demand by non-market forces; (4) competitive and complex conditions in global markets; (5) our ability to obtain, maintain, or renew permits or approvals necessary for our mining operations; (6) rising energy costs and interruptions or uncertainty in energy supplies; (7) unfavorable changes in the cost, quality, or availability of raw materials or other key inputs, or by disruptions in the supply chain; (8) economic, political, and social conditions, including the impact of trade policies, tariffs, and adverse industry publicity; (9) legal proceedings, investigations, or changes in foreign and/or U.S. federal, state, or local laws, regulations, or policies; (10) changes in tax laws or exposure to additional tax liabilities; (11) climate change, climate change legislation or regulations, and efforts to reduce emissions and build operational resilience to extreme weather conditions; (12) disruptions in the global economy caused by ongoing regional conflicts; (13) fluctuations in foreign currency exchange rates and interest rates, inflation and other economic factors in the countries in which we operate; (14) global competition within and beyond the aluminum industry; (15) our ability to achieve our strategies or expectations relating to environmental, social, and governance considerations; (16) claims, costs, and liabilities related to health, safety and environmental laws, regulations, and other requirements in the jurisdictions in which we operate; (17) liabilities resulting from impoundment structures, which could impact the environment or cause exposure to hazardous substances or other damage; (18) dilution of the ownership position of Alcoa's stockholders, price volatility, and other impacts on the price of Alcoa common stock by the secondary listing of the Alcoa common stock on the Australian Securities Exchange; (19) our ability to obtain or maintain adequate insurance coverage; (20) our ability to execute on our strategy to reduce complexity and optimize our asset portfolio and to realize the anticipated benefits from announced plans, programs, initiatives relating to our portfolio, capital investments, and developing technologies; (21) our ability to integrate and achieve intended results from joint ventures, other strategic alliances, and strategic business transactions; (22) our ability to fund capital expenditures; (23) deterioration in our credit profile or increases in interest rates; (24) impacts on our current and future operations due to our indebtedness; (25) our ability to continue to return capital to our stockholders through the payment of cash dividends and/or the repurchase of our common stock; (26) cyber attacks, security breaches, system failures, software or application vulnerabilities, or other cyber incidents; (27) labor market conditions, union disputes and other employee relations issues; (28) a decline in the liability discount rate or lower-than-expected investment returns on pension assets; and (29) the other risk factors discussed in Alcoa's Annual Report on Form 10-K for the fiscal year ended December 31, 2024 and other reports filed by Alcoa with the SEC. Alcoa cautions readers not to place undue reliance upon any such forward-looking statements, which speak only as of the date they are made. Alcoa disclaims any obligation to update publicly any forward-looking statements, whether in response to new information, future events or otherwise, except as required by applicable law. Neither Alcoa nor any other person assumes responsibility for the accuracy and completeness of any of these forward-looking statements.

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Investor Contact:

Yolande Doctor

412-992-5450

Yolande.B.Doctor@alcoa.com

Media Contact:

Sarah Ayer

412-965-7622

Sarah.Ayer@alcoa.com

Alcoa Corporation to Host Investor Day on October 30, 2025