KALU insider reports RSU tax withholding; 7,363 shares owned

Rhea-AI Filing Summary

Kaiser Aluminum (KALU) disclosed an insider transaction by officer Vijai Narayan (VP, Corp Controller & CAO) on a Form 4. On 11/07/2025, 163 shares of common stock were withheld to satisfy tax obligations from the vesting of previously granted RSUs, at a reported price of $94.53 per share. Following this transaction, the reporting person beneficially owns 7,363 shares, which includes 6,355 shares acquired through RSU grants.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Narayan Vijai

Role VP, Corp Ctrl & CAO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock, par value $0.01 per share	163	$94.53	$15K

Holdings After Transaction: Common Stock, par value $0.01 per share — 7,363 shares (Direct)

Footnotes (1)

1. Shares withheld to satisfy the withholding tax obligations resulting from the vesting on November 7, 2025 of certain restricted stock units granted to the reporting person in 2019 under the Kaiser Aluminum Corporation 2016 Equity and Incentive Compensation Plan. Includes 6,355 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^*

Narayan Vijai

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	VP, Corp Ctrl & CAO

3. Date of Earliest Transaction (Month/Day/Year)
11/07/2025

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	11/07/2025		F(1)		163	D	$94.53	7,363(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. Shares withheld to satisfy the withholding tax obligations resulting from the vesting on November 7, 2025 of certain restricted stock units granted to the reporting person in 2019 under the Kaiser Aluminum Corporation 2016 Equity and Incentive Compensation Plan.

2. Includes 6,355 shares acquired pursuant to grants of restricted stock units.

	/s/ John M. Donnan, with power of attorney for Vijai Narayan	11/10/2025
	** 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 did KALU disclose in this Form 4?

An officer reported that 163 shares were withheld on 11/07/2025 to cover taxes from RSU vesting at $94.53.

Who is the reporting person in KALU’s Form 4?

The reporting person is Vijai Narayan, VP, Corp Controller & CAO of Kaiser Aluminum.

How many KALU shares does the insider own after the transaction?

Beneficial ownership is 7,363 shares after the reported transaction.

Why were the KALU shares withheld?

The 163 shares were withheld to satisfy withholding tax obligations from the vesting of RSUs granted in 2019.

How many KALU shares stem from RSU grants?

The ownership total includes 6,355 shares acquired through RSU grants.

Was this a market sale by the insider?

No. It was a share withholding for taxes upon RSU vesting, not an open-market sale.