Kaiser Aluminum Corporation will release its second quarter 2026 financial and operating results on Wednesday, July 22, 2026, after the market closes. The company has scheduled a conference call to discuss these results on Thursday, July 23, 2026, at 10:00 a.m. Eastern Time.

Conference Call Details

Investors can access the conference call via telephone from the U.S. and Canada at (877) 423-9813. International callers may dial (201) 689-8573. The conference call ID number is 13761303.

A live webcast and related presentation slides will be available through the Investors section of the company's website at https://investors.kaiseraluminum.com . An audio archive of the call will be accessible on the website following the event.

About Kaiser Aluminum Corporation

Kaiser Aluminum Corporation, headquartered in Franklin, Tenn., produces semi-fabricated specialty aluminum products. The company serves customers worldwide with engineered solutions for aerospace, high-strength, packaging, general engineering, and automotive extrusions. Its North American facilities manufacture plate, sheet, coil, extrusions, rod, bar, tube, and wire products. Founded in 1946, the company's stock is included in the Russell 2000 index and the S&P Small Cap 600 index.

Additional information, including Securities and Exchange Commission (SEC) filings, is available on the company's website at www.kaiseraluminum.com and the SEC's website at www.sec.gov .

Kaiser Aluminum Corporation today published its 2025 Sustainability Report, detailing the company's progress in sustainable business practices and initiatives. The report outlines advancements in environmental goals, product innovation, and community engagement, reflecting the company's commitment to creating sustainable value for stakeholders.

Key Environmental and Operational Highlights

The report highlights significant strides in reducing the company's environmental footprint. Kaiser Aluminum achieved a combined Scope 1 and 2 emissions intensity that was 17% below the 2019 baseline. This reduction was driven by the first full year of operations at the Warrick rolling mill utilizing lower carbon grid power and the ongoing expansion of high-recycled-content offerings.

Product Portfolio Expansion

In 2025, the company introduced two new high-recycled-content products and commercialized alloy 6026A. This alloy is fully compliant with the European Union Restriction of Hazardous Substances directive, supporting the delivery of advanced engineered solutions for a more resource-efficient materials ecosystem.

Strategic Investments and Community Engagement

Kaiser Aluminum completed the most significant capital investment cycle in its recent history, which combined with improved financial performance to strengthen the foundation of the business. The company also focused on talent development, expanding learning programs to build a stronger manufacturing pipeline through partnerships with educational institutions.

Community engagement remained a priority, with the company strengthening partnerships through employee volunteerism, charitable sponsorships, and corporate giving throughout the year.

| Metric | Achievement | n| --- | --- | | Scope 1 and 2 Emissions Intensity | 17% below 2019 baseline | | New High-Recycled-Content Products | 2 introduced | | New Commercialized Alloy | 6026A |