[Form 3] KAISER ALUMINUM CORP Initial Statement of Beneficial Ownership

Rhea-AI Filing Summary

James D. Hoffman filed an initial Form 3 reporting his relationship to Kaiser Aluminum Corp (KALU) as a director. The event date is 09/18/2025 and the form is signed 09/19/2025. The filing states no securities are beneficially owned by the reporting person at the time of the statement.

Positive

• Director relationship disclosed—the filing clearly identifies James D. Hoffman as a director of Kaiser Aluminum Corp (KALU).
• Timely filing—the event date is 09/18/2025 and the form was signed on 09/19/2025, indicating prompt reporting.

Negative

• No beneficial ownership reported—the Form 3 states that the reporting person does not beneficially own any securities, providing no insider equity position.
• Limited informational value—the filing contains no transactions, holdings, or other details that would materially inform investors.

Insights

Financial Analyst

TL;DR: Routine Form 3 shows a newly reported director with no beneficial ownership disclosed, a neutral governance signal.

The filing documents Mr. Hoffman as a director of Kaiser Aluminum Corp (KALU) with an event date of 09/18/2025 and a signature dated 09/19/2025. Importantly, the form explicitly states that no securities are beneficially owned by the reporting person. This is a standard initial disclosure and does not present financial metrics or transactions to affect valuation.

Corporate Governance Expert

TL;DR: An initial insider disclosure listing director status but reporting no ownership is procedural and offers limited governance insight.

The Form 3 confirms the reporting persons role as a director and that the submission was executed by a power of attorney. Absence of reported ownership means there is no disclosed insider stake to align incentives; however, the form alone provides no additional governance actions or changes to board composition beyond the stated relationship.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

HOFFMAN JAMES DONALD

(Last) (First) (Middle)

1550 W. MCEWEN DRIVE, SUITE 500

(Street)

FRANKLIN TN 37067

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
09/18/2025

3. Issuer Name and Ticker or Trading Symbol
KAISER ALUMINUM CORP [ KALU ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

No securities are beneficially owned.

	/s/ John M. Donnan, with power of attorney for James D. Hoffman	09/19/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What does the Form 3 filed for KALU on 09/18/2025 disclose?

The Form 3 discloses that James D. Hoffman is a director of Kaiser Aluminum Corp (KALU) and states no securities are beneficially owned by him as of the event date.

Does the Form 3 show any stock or option holdings for James D. Hoffman at KALU?

No. The filing explicitly states no securities are beneficially owned and provides no entries in the tables for non-derivative or derivative holdings.

When was the Form 3 event and filing date for KALU?

The event date is 09/18/2025 and the Form 3 is signed on 09/19/2025 by John M. Donnan with power of attorney for James D. Hoffman.

Does this Form 3 indicate any transactions or changes in ownership for KALU insiders?

No. This initial statement reports a director relationship but contains no transactions or ownership changes.