Kaiser Aluminum Corporation (NASDAQ:KALU) today announced that it plans to release its third quarter 2025 financial and operating results on Wednesday, October 22, 2025, after the market closes. The Company will host its quarterly conference call on Thursday, October 23, 2025, at 10:00 a.m. Eastern Time.

The conference call can be directly accessed from the U.S. and Canada at (877) 423-9813 and accessed internationally at (201) 689-8573. The conference call ID number is 13755775. A live webcast and related presentation slides will be available through the Investors portion of the Company's website at https://investors.kaiseraluminum.com. An audio archive will be available on the Company's website following the call.

About Kaiser Aluminum Corporation

Kaiser Aluminum Corporation, headquartered in Franklin, Tenn., is a leading producer of semi-fabricated specialty aluminum products, serving customers worldwide with highly-engineered solutions for aerospace and high-strength, packaging, general engineering, automotive extrusions, and other industrial applications. The Company's North American facilities produce value-added plate, sheet, coil, extrusions, rod, bar, tube, and wire products, adhering to traditions of quality, innovation, and service that have been key components of the culture since the Company was founded in 1946. The Company's stock is included in the Russell 2000® index and the S&P Small Cap 600® index.

Available Information

For more information, please visit the Company's website at www.kaiseraluminum.com. The website includes a section for investor relations under which the Company provides notifications of news or announcements regarding its financial performance, including Securities and Exchange Commission (SEC) filings, investor events, and earnings and other press releases. In addition, all Company filings submitted to the SEC are available through a link to the section of the SEC's website at www.sec.gov, which includes: Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and Proxy Statements for the Company's annual stockholders' meetings, and other information statements as filed with the SEC. In addition, the Company provides a webcast of its quarterly earnings calls and certain events in which management participates or hosts with members of the investment community.

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Addo Investor Relations

Investors@KaiserAluminum.com

949-614-1769

Kaiser Aluminum Corporation Announces Third Quarter 2025 Earnings Release and Conference Call