Century Aluminum Company (CENX) investor relations material

Executive summary

• Achieved strong 2025 results: $2.5B net sales, $42M net income, $425M adjusted EBITDA, and 640,000 tonnes of aluminum produced.

• Announced Mt. Holly expansion, Jamalco cost efficiency programs, and monetized Hawesville property.

• Entered joint venture with EGA to build a new U.S. aluminum smelter, expected to double U.S. primary aluminum production.

• All production facilities to operate at full capacity in 2026, positioning as the largest U.S. producer.

Voting matters and shareholder proposals

• Election of seven directors for one-year terms.

• Ratification of Deloitte & Touche LLP as independent auditor for 2026.

• Advisory vote on executive compensation (say-on-pay).

• Board recommends voting FOR all proposals.

Board of directors and corporate governance

• Board consists of seven nominees, 71% independent, with diverse backgrounds and skills.

• Committees: Audit, Compensation, Governance & Nominating, Health, Safety & Sustainability.

• Independent Chairman structure; 86% board and 89% committee meeting attendance in 2025.

• Annual board and committee self-evaluations and proactive shareholder engagement.