KAISER ALUMINUM CORP — Director's Dealing 2021

Jun 5, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: KAISER ALUMINUM CORP (KALU)
CIK: 0000811596
Period of Report: 2021-06-02

Reporting Person: OSBORNE ALFRED E JR (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-06-02	Common Stock, par value $0.01 per share	S	2500	$132.945	Disposed	17419.538	Direct
2021-06-03	Common Stock, par value $0.01 per share	A	952	—	Acquired	18371.538	Direct
2021-06-03	Common Stock, par value $0.01 per share	A	724	$131.21	Acquired	19095.538	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock, par value $0.01 per share	3500	Indirect
Common Stock, par value $0.01 per share	500	Indirect

Footnotes

F1: Represents the sale of 2,500 shares in multiple transactions, ranging from $132.820 to $133.030 per share, resulting in a weighted average sale price of $132.945 per share. The reporting person undertakes to provide upon request by the SEC staff, the Registrant, or a security holder of the Registrant, full information regarding the number of shares sold at each separate price within the range.

F2: Grant to the reporting person of restricted stock under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan. All restrictions will lapse on June 3, 2022.

F3: Stock received by the reporting person under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan at such person's election in lieu of all or a portion of the reporting person's annual cash retainer for serving as a member of the Board of Directors of Kaiser Aluminum Corporation, lead independent director or chair of a committee of the Board of Directors.

F4: Equal to the average of the closing prices of the Issuer's common stock as reported by the Nasdaq Stock Market, LLC for the twenty trading days prior to June 3, 2021.