KAISER ALUMINUM CORP

We value stockholder feedback and insights and believe that accountability to stockholders is an essential component of good governance. We engage in ongoing, proactive discussions of a variety of topics with significant stockholders throughout the year. Those discussions may include our CEO and Chairman of the Board, Lead Independent Director and/or other members of senior management when requested by our stockholders. In addition to providing our perspective and seeking feedback on topics specific to our company, we invite discussion on any other topics or trends stockholders may wish to discuss with us. The feedback provided by stockholders is reported to the full board of directors. Our board of directors reviews the feedback and determines whether additional discussion and actions by the full board or any board committees are necessary. In 2024, in addition to interactions regarding our financial performance, we engaged with stockholders representing greater than 50% of our outstanding shares on matters relating to our business strategy and performance; operations, including metal sourcing and recycled content strategies; capital allocation; long-term outlook; board structure; board and executive leadership succession planning; governance; executive compensation; and other sustainability matters, including the Warrick power separation project. This information is also reviewed by members of our senior management and the full board of directors.