KALU CEO Keith Harvey reports 33,000-share insider sale

Rhea-AI Filing Summary

Kaiser Aluminum Corp (KALU) reported an insider stock sale by its President & CEO and director, Keith Harvey. On 11/21/2025, he sold 33,000 shares of common stock in multiple transactions at prices ranging from $89.02 to $91.42 per share, for a weighted average sale price of $90.34 per share.

Following these sales, Harvey beneficially owns 103,231 shares of Kaiser Aluminum common stock, including 72,199 shares acquired through restricted stock unit grants. The filing states that the sales were made as part of his financial planning to diversify his stockholdings, and he has agreed to provide full breakdowns of the individual trade prices upon request.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Harvey Keith

Role President & CEO

Type	Security	Shares	Price	Value
Disposition	Common Stock, par value $0.01 per share	33,000	$90.34	$2.98M

Holdings After Transaction: Common Stock, par value $0.01 per share — 103,231 shares (Direct)

Footnotes (1)

1. Represents the sale of 33,000 shares in multiple transactions, ranging from $89.02 to $91.42 per share, resulting in a weighted average sale price of $90.34 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. The sales were made as part of the reporting person's financial planning to diversify his stockholdings. Includes 72,199 shares acquired pursuant to grants of restricted stock units.

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Harvey Keith

(Last) (First) (Middle)

1550 WEST MCEWEN DRIVE

SUITE 500

(Street)

FRANKLIN TN 37067

(City) (State) (Zip)

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

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

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

3. Date of Earliest Transaction (Month/Day/Year)
11/21/2025

4. 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 Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, par value $0.01 per share	11/21/2025		D		33,000	D	$90.34(1)	103,231(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents the sale of 33,000 shares in multiple transactions, ranging from $89.02 to $91.42 per share, resulting in a weighted average sale price of $90.34 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. The sales were made as part of the reporting person's financial planning to diversify his stockholdings.

2. Includes 72,199 shares acquired pursuant to grants of restricted stock units.

	/s/ Cherrie I. Tsai, with power of attorney for Keith Harvey	11/25/2025
	** 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 4 (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 insider transaction did Kaiser Aluminum (KALU) report in this Form 4?

The filing reports that President & CEO and director Keith Harvey sold 33,000 shares of Kaiser Aluminum common stock on 11/21/2025.

At what prices did Keith Harvey sell Kaiser Aluminum (KALU) shares?

The 33,000 shares were sold in multiple transactions at prices ranging from $89.02 to $91.42 per share, with a weighted average sale price of $90.34 per share.

How many Kaiser Aluminum (KALU) shares does Keith Harvey own after the transaction?

After the reported sale, Keith Harvey beneficially owns 103,231 shares of Kaiser Aluminum common stock.

How many of Keith Harveys Kaiser Aluminum (KALU) shares come from restricted stock units?

His beneficial ownership includes 72,199 shares that were acquired through grants of restricted stock units.

Why did Keith Harvey sell Kaiser Aluminum (KALU) shares according to the filing?

The filing states that the 33,000-share sale was made as part of Keith Harveys financial planning to diversify his stockholdings.

What is Keith Harveys role at Kaiser Aluminum (KALU)?

Keith Harvey is identified as both a Director and the President & CEO of Kaiser Aluminum Corp.