KAISER ALUMINUM CORP

The following table provides information as of December 31, 2024 with respect to shares of our common stock that may be issued under our equity compensation plans.

(1)

Includes awards made under the 2016 Plan and 2021 Plan. The 2016 Plan was succeeded in its entirety by the 2021 Plan on June 3, 2021, the date the 2021 Plan was approved by our stockholders and became effective. Copies of the 2016 Plan and 2021 Plan are attached as Exhibit 10.1 to our Current Report on Form 8-K filed with the SEC on May 26, 2016 and Exhibit 10.1 to our Current Report on Form 8-K filed with the SEC on June 11, 2024, respectively.

(2)

Reflects restricted stock units covering 397,122 shares of our common stock and performance shares covering 397,006 shares of our common stock, in each case outstanding as of December 31, 2024, and does not include 11,552 shares of restricted stock that remained subject to forfeiture as of December 31, 2024 because such shares are already outstanding. The performance awards assume maximum payout, and, as a result, this aggregate reported number may overstate actual dilution.

(3)

Subject to certain adjustments that may be required from time to time to prevent dilution or enlargement of the rights of participants, a maximum of 788,000 shares of our common stock (consisting of 525,000 shares that were approved in 2021 and 263,000 that were approved in 2024), plus (1) the total number of shares remaining available for awards under the 2016 Plan as of the effective date of the 2021 Plan and (2) any shares of our common stock that become available under the 2021 Plan or the 2016 Plan as a result of forfeiture, cancellation, expiration, withholding or cash settlement of awards. All of these shares may be issued with respect to award vehicles other than just stock options or stock appreciation rights or other rights to acquire shares.