KAISER ALUMINUM CORP

As required by Section 953(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act, and Item 402(v) of Regulation S-K, we are providing the following information about the relationship between executive “compensation actually paid” to our principal executive officers (“PEO”) and to our non-PEO named executive officers and certain financial performance of the Company.

(1)

For 2024 and 2022, the PEO is Mr. Harvey ("PEO 1") and the non-PEO named executive officers are Messrs. Donnan, West, Walsh and Tiffany. For 2023 and 2021, the PEO is Mr. Harveyand the non-PEO named executive officers are Messrs. Donnan, West, Walsh and Raymond D. Parkinson. For 2020, the PEOs are Messrs. Harvey and Hockema and the non-PEO named executive officers are Messrs. Donnan, West, Walsh and Tiffany. Mr. Hockema served as our PEO ("PEO 2") until July 30, 2020 and Mr. Harvey has served as our PEO since July 31, 2020.

(2)

The fair value of equity awards reported for the purposes of compensation actually paid is calculated using the same methodologies as the fair value of equity awards reported in the applicable Summary Compensation Table and adjusted for the share price and, for performance share awards, the probable outcome of the performance conditions, including as applicable as of December 31 stof each applicable year.

(3)

The table below sets forth the values deducted and added to the Summary Compensation Table Total for PEO 1 for 2024:

The amounts in the Inclusion of Equity Values in the tables above are derived from the amounts set forth in the following tables:

(4)

The table below sets forth the values deducted and added to the average Summary Compensation Table Total for non-PEO named executive officers for 2024:

The amounts in the Inclusion of Equity Values in the tables above are derived from the amounts set forth in the following tables:

(5)

For purposes of this disclosure, the peer group is the S&P 600 SmallCap Materials Index..

(6)

Net income (loss) is calculated in accordance with GAAP, as previously reported.

(7)

Effective January 1, 2025, we elected to change our method of accounting for certain inventory from the LIFO method to the WAC method to improve the comparability of our operational results between periods. This accounting change has not been retrospectively applied to the calculation of Net Income (Loss) or Adjusted EBITDA in the Pay Versus Performance table above or the related relationship graphs below.

(8)

Our company-selected measure is Adjusted EBITDA, which is used as the key performance metric in our short-term incentive plans.

The tables below show the relationship between compensation actually paid to our PEOs and the average of the compensation actually paid to our non-PEO named executive officers and each of our previously reported Adjusted EBITDA, previously reported net income and TSR for fiscal years 2020 through 2024, plus the relationship between our TSR and Peer Group TSR for fiscal years 2020 through 2024. For ease of discussion, we have aggregated the compensation of Messrs. Harvey and Hockema for 2020, as each served as our CEO for a portion of 2020. See the section entitled “Executive Compensation - Compensation Discussion and Analysis” for a discussion of compensation paid to our named executive officers.

Compensation Actually Paid versus Net Income

The table below describes the relationship between compensation actually paid to our PEOs and the average of the compensation actually paid to our non-PEO named executive officers and our previously reported Net Income (Loss) for fiscal years 2020 through 2024.

Compensation Actually Paid versus Adjusted EBITDA

The table below describes the relationship between compensation actually paid to our PEOs and the average of the compensation actually paid to our non-PEO named executive officers and our previously reported Adjusted EBITDA for fiscal years 2020 through 2024.

Compensation Actually Paid versus TSR

The table below shows the relationship between compensation actually paid to our PEO and the average of the compensation actually paid to our non-PEO named executive officers and our cumulative TSR and between our cumulative TSR and the TSR of our peer group for fiscal years 2020 to 2024.

The table above also describes the relationship between our one-, two-, three-, four- and five-year cumulative TSR compared to the weighted average one-, two-, three-, four- and five-year cumulative TSR of the companies in the S&P SmallCap 600 Materials Index. Our TSR during 2020 through 2022 was impacted by a series of external issues and challenges initiating with the onset of the COVID-19 pandemic late in the first quarter of 2020 that negatively impacted the end markets for many of our products, including large commercial aerospace applications. In addition, while the S&P SmallCap 600 Materials Index reflects our industry sector, many of the companies included in the index were not as heavily impacted by the COVID-19 pandemic related impact on the aerospace industry.

Tabular List of Most Important Performance Measures

The following are the most important financial performance measures used by the Company to link executive compensation actually paid to our named executive officers to the Company’s performance for the most recently completed fiscal year.

Most Important Performance Measures

•Adjusted EBITDA

•Relative TSR

•Adjusted EBITDA Margin