[144] KAISER ALUMINUM CORP SEC Filing

Rhea-AI Filing Summary

Kaiser Aluminum Corporation reports planned sales of common stock under a Rule 144 notice. The filing lists securities to be sold that originated from vesting of equity awards: 2,981 shares (vested 03/05/2021), 2,858 shares (vested 03/05/2022), 2,590 shares (vested 03/05/2023), and 10,032 shares (vested 03/05/2024).

The securities are Common Stock, par value $0.01 per share, and the filing identifies broker information. This notice indicates proposed dispositions covered by Rule 144 rather than an issuance of new shares.

Insights

Securities Regulatory Analyst

Rule 144 notice lists specific vested award lots and share counts.

The filing itemizes four vested equity award lots with share counts and vesting dates: 2,981 on 03/05/2021, 2,858 on 03/05/2022, 2,590 on 03/05/2023, and 10,032 on 03/05/2024. It identifies the security as Common Stock, par value $0.01.

Under Rule 144, the notice documents proposed brokered sales by an affiliate or control person; the filing does not describe sale mechanics or proceeds recipients. Subsequent Form 4 or transaction reports would record completed dispositions.

Equity Compensation Specialist

The shares originate from vested equity awards rather than new grants.

The listed lots are labeled as "Vesting of Equity Award," tying each share count to specific vesting dates. That indicates these are previously granted compensation shares becoming eligible for resale.

Because the entries show vesting dates and counts, tracking post-vesting Form 4 or broker confirmations will show actual transfers and any impact on beneficial ownership.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common Stock, par value $0.01 per share	R.W. Baird 771 E. Wisconsin Ave Milwaukee WI 53202	18461	1551845	16210622	02/23/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common Stock, par value $0.01 per share	03/05/2021	Vesting of Equity Award	Kaiser Aluminum Corporation			2981	03/05/2021	Stock Compensation
Common Stock, par value $0.01 per share	03/05/2022	Vesting of Equity Award	Kaiser Aluminum Corporation			2858	03/05/2022	Stock Compensation
Common Stock, par value $0.01 per share	03/05/2023	Vesting of Equity Award	kai			2590	03/05/2023	Stock Compensation
Common Stock, par value $0.01 per share	03/05/2024	Vesting of Equity Award	Kaiser Aluminum Corporation			10032	03/05/2024	Stock Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)