CEO of CENTURY (CENX) trust sells 150,000 shares at $48.19

Rhea-AI Filing Summary

CENTURY President and CEO Jesse E. Gary reported estate-planning and selling transactions involving the company’s common stock. On January 12, 2026, he transferred 314,611 shares of common stock from direct ownership to a self-settled, revocable trust for which he serves as trustee, at a stated price of $0. After this transfer, he directly held 277,227 shares, which include unvested RSUs granted under the company’s long-term incentive plans, and the trust held 442,580 shares.

On January 23, 2026, the trust sold 150,000 shares of CENTURY common stock at a weighted average price of $48.19 per share under a Rule 10b5-1 trading plan adopted on August 20, 2025. Following this sale, the trust continued to hold 292,580 shares of CENTURY common stock for the benefit of Gary as trustee.

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).

X

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^*

Gary Jesse E

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
01/12/2026

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	01/12/2026		G		314,611(1)	D	$0	277,227(2)	D
Common Stock	01/12/2026		G		314,611(1)	A	$0	442,580	I	By Trust
Common Stock(3)	01/23/2026		S		150,000	D	$48.19(4)	292,580(5)	I	By Trust

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 shares transferred by the Reporting Person to a self-settled, revocable trust for estate planning purposes for which the Reporting Person serves as trustee.

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

3. The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 20, 2025.

4. The price reported above reflects the weighted average sale price for the shares which were sold in multiple transactions at prices ranging from $46.64 to $49.11, 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.

5. Shares held in a self-settled, revocable trust for which the Reporting Person serves as trustee.

Remarks:

	/s/ Paul Sharobeem, attorney-in-fact for Jesse E. Gary	01/23/2026
	** 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 transaction did CENTURY (CENX) report for its CEO?

The filing shows that President and CEO Jesse E. Gary, through a self-settled revocable trust for which he is trustee, sold 150,000 shares of CENTURY common stock on January 23, 2026 at a weighted average price of $48.19 per share.

How many CENTURY (CENX) shares does the CEO’s trust hold after the sale?

After the reported 150,000-share sale on January 23, 2026, the self-settled revocable trust associated with CEO Jesse E. Gary held 292,580 shares of CENTURY common stock.

Were any CENTURY (CENX) shares moved for estate planning purposes?

Yes. On January 12, 2026, 314,611 shares of CENTURY common stock were transferred at $0 from Jesse E. Gary’s direct ownership to a self-settled, revocable trust for estate planning purposes, with Gary serving as trustee.

Does the CENTURY (CENX) CEO still directly own shares after these transactions?

Yes. Following the January 12, 2026 transfer, Jesse E. Gary directly owned 277,227 shares of CENTURY common stock, which includes unvested RSUs granted under the company’s long-term incentive plans.

Was the CENTURY (CENX) insider sale made under a trading plan?

According to the filing, the 150,000-share sale on January 23, 2026 by the CEO’s trust was executed under a Rule 10b5-1 trading plan that was adopted on August 20, 2025.

What price range did the CENTURY (CENX) CEO’s trust receive for the sold shares?

The reported weighted average sale price was $48.19 per share, with individual trades executed in a range from $46.64 to $49.11, inclusive.