Century Aluminum (CENX) SVP Aboud sells 15,097 common shares

Rhea-AI Filing Summary

Century Aluminum Company senior vice president Matt Aboud reported selling a total of 15,097 shares of common stock in open-market transactions. He sold 12,126 shares on March 2, 2026 at a weighted average price of $52.50 per share and 2,971 shares on March 3, 2026 at a weighted average price of $52.67 per share, with actual trade prices falling within disclosed ranges. After these sales, he directly owned 64,843 shares, which include unvested restricted stock units granted under the company’s long-term incentive plans.

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

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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^*

Aboud Matt

(Last) (First) (Middle)

C/O CENTURY ALUMINUM COMPANY

1 S. WACKER DRIVE, SUITE 1000

(Street)

CHICAGO IL 60606

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
CENTURY ALUMINUM CO [ CENX ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP, Strategy & Business Dev't

3. Date of Earliest Transaction (Month/Day/Year)
03/02/2026

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	03/02/2026		S		12,126	D	$52.5(1)	67,814	D
Common Stock	03/03/2026		S		2,971	D	$52.67(2)	64,843(3)	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. The price reported above reflects the weighted average sale price for the shares which were sold in multiple transactions at prices ranging from $51.28 to $53.21, inclusive. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the specific number of shares and prices at which the transactions were effected.

2. The price reported above reflects the weighted average sale price for the shares which were sold in multiple transactions at prices ranging from $52.50 to $52.75, inclusive. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the specific number of shares and prices at which the transactions were effected.

3. Includes unvested RSUs granted to the Reporting Person under the Issuer's Long-Term Incentive Plans.

Remarks:

	/s/ Paul Sharobeem, attorney-in-fact for Matt Aboud	03/04/2026
	** 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 transactions did CENX report for Matt Aboud?

Century Aluminum reported that SVP Matt Aboud executed two open-market sales of common stock, totaling 15,097 shares. The trades occurred on March 2 and March 3, 2026 at weighted average prices slightly above $52 per share.

How many Century Aluminum (CENX) shares did Matt Aboud sell?

Matt Aboud sold 15,097 Century Aluminum common shares across two transactions. He sold 12,126 shares on March 2, 2026 and 2,971 shares on March 3, 2026, both categorized as open-market or private sale transactions.

At what prices did CENX executive Matt Aboud sell his shares?

The reported prices are weighted averages of $52.50 and $52.67 per share. Footnotes state actual trades on March 2 ranged from $52.50 to $52.75, and on March 3 from $51.28 to $53.21, with full trade details available upon request.

How many CENX shares does Matt Aboud own after these sales?

After the reported transactions, Matt Aboud directly owns 64,843 Century Aluminum common shares. This figure includes unvested restricted stock units granted to him under the company’s long-term incentive plans, as disclosed in the filing footnotes.

What is Matt Aboud’s role at Century Aluminum (CENX)?

Matt Aboud serves as Senior Vice President, Strategy & Business Development at Century Aluminum. His position as an officer makes his equity transactions subject to Form 4 reporting requirements for insiders under U.S. securities regulations.

Were the CENX insider sales done in the open market?

Yes, both transactions are classified as open-market or private sales. The Form 4 uses transaction code “S” with the description “Sale in open market or private transaction,” indicating they were not option exercises or tax-withholding disposals.