[Form 4] Century Aluminum Co Insider Trading Activity

Rhea-AI Filing Summary

Century Aluminum (CENX) – Form 4 insider filing

Director Errol Glasser reported the annual equity award granted on 16 Jun 2025. The filing shows an acquisition (code “A”) of 7,778 restricted stock units (RSUs) at a price of $0, reflecting standard non-cash director compensation. All RSUs vested immediately on the grant date.

Following the transaction, Mr. Glasser’s direct beneficial ownership increases to 118,697 common shares. The total includes shares issuable from previously vested RSUs that have been deferred under an earlier election. No open-market purchases, sales, derivative positions, or additional insider activity were disclosed.

The event is routine and does not alter the company’s capital structure, but it modestly aligns director interests with shareholders by expanding equity exposure.

Positive

• Director ownership increases by 7,778 shares, enhancing alignment with shareholders.

Negative

• None.

Insights

Corporate Governance Expert

TL;DR: Routine RSU grant; immaterial financial impact, mildly positive for alignment.

The Form 4 details a standard director compensation action—7,778 immediately-vested RSUs to Errol Glasser. No cash exchanged hands, so the transaction has no effect on liquidity or earnings. Glasser’s ownership rises to 118,697 shares, which may marginally strengthen board-shareholder alignment. Because the grant represents a tiny fraction of Century Aluminum’s float and mirrors prior annual awards, it is viewed as housekeeping rather than a market-moving event.

Financial Analyst

TL;DR: Neutral—small insider increase, no buying signal.

From a capital-markets standpoint, the RSU award neither injects cash nor signals insider conviction through open-market buying. While increased skin-in-the-game is directionally positive, the 7,778-share grant is immaterial versus CENX’s ~92 million shares outstanding. Investors should treat the filing as routine disclosure with negligible valuation impact.

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^*

GLASSER ERROL

(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
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
06/16/2025

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	06/16/2025		A		7,778(1)	A	$0	118,697(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 annual grant of restricted stock units ("RSUs"), all of which vested on the date of grant.

2. Includes shares of common stock issuable pursuant to vested RSUs, the settlement of which have been deferred pursuant to an annual deferral election previously made by the Reporting Person.

Remarks:

	/s/ Paul Sharobeem, as attorney in fact for Errol Glasser	06/18/2025
	** 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

How many Century Aluminum (CENX) shares did Director Errol Glasser acquire?

He received 7,778 restricted stock units that vested immediately.

What was the transaction price listed on the Form 4?

The RSUs were granted at $0, reflecting a non-cash equity award.

What is Errol Glasser’s total direct ownership after the grant?

His direct beneficial ownership rises to 118,697 shares of CENX common stock.

Does the Form 4 include any open-market purchases or sales?

No. The only reported activity is the RSU grant; there were no open-market transactions.

Are there any derivative securities reported in this filing?

The filing lists no derivative securities acquired or disposed of.