Gunnar Gudlaugsson

CIK: 0001846594

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)2 (20.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)4 (40.0%)

Compensation grants

Other (G, F, J, C, D, …)4 (40.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

CENX

CENTURY ALUMINUM CO

Officer

Discretionary Trading P&L

Holdings

Transaction History (10 total)

CENX
CENTURY ALUMINUM CO
Feb 25, 2026
Sale(S)
Direct
43K shares at avg. $54.10$2.3M
CENX
CENTURY ALUMINUM CO
Jan 1, 2026
Award(A)
Direct
15.6K shares-
CENX
CENTURY ALUMINUM CO
Dec 31, 2025
Award(A)
Direct
82.8K shares-
CENX
CENTURY ALUMINUM CO
Dec 31, 2025
Tax Payment(F)
Direct
41.9K shares at avg. $39.18$1.6M
CENX
CENTURY ALUMINUM CO
Dec 31, 2025
Tax Payment(F)
Direct
20.9K shares at avg. $39.18$821K
CENX
CENTURY ALUMINUM CO
Jan 1, 2025
Award(A)
Direct
24.6K shares-
CENX
CENTURY ALUMINUM CO
Dec 31, 2024
Award(A)
Direct
35.2K shares-
CENX
CENTURY ALUMINUM CO
Dec 31, 2024
Tax Payment(F)
Direct
17.8K shares at avg. $18.22$324K
CENX
CENTURY ALUMINUM CO
Dec 31, 2024
Tax Payment(F)
Direct
6.1K shares at avg. $18.22$111K
CENX
CENTURY ALUMINUM CO
Dec 5, 2024
Sale(S)
Direct
20K shares at avg. $23.85$477K

		Type	Shares	Price		Ownership
Feb 25, 2026	CENX CENTURY ALUMINUM CO	Sale(S)	43,000	$54.10	$2,326,300	Direct
Jan 1, 2026	CENX CENTURY ALUMINUM CO	Award(A)	15,624	-	$0	Direct
Dec 31, 2025	CENX CENTURY ALUMINUM CO	Award(A)	82,794	-	$0	Direct
Dec 31, 2025	CENX CENTURY ALUMINUM CO	Tax Payment(F)	41,886	$39.18	$1,641,093	Direct
Dec 31, 2025	CENX CENTURY ALUMINUM CO	Tax Payment(F)	20,943	$39.18	$820,547	Direct
Jan 1, 2025	CENX CENTURY ALUMINUM CO	Award(A)	24,582	-	$0	Direct
Dec 31, 2024	CENX CENTURY ALUMINUM CO	Award(A)	35,199	-	$0	Direct
Dec 31, 2024	CENX CENTURY ALUMINUM CO	Tax Payment(F)	17,804	$18.22	$324,389	Direct
Dec 31, 2024	CENX CENTURY ALUMINUM CO	Tax Payment(F)	6,105	$18.22	$111,233	Direct
Dec 5, 2024	CENX CENTURY ALUMINUM CO	Sale(S)	20,000	$23.85	$477,000	Direct

1-10 of 10 transactions

About Gudlaugsson Gunnar

Gudlaugsson Gunnar (SEC CIK 0001846594) files insider reports with the SEC as EVP - Global Operations of CENTURY ALUMINUM CO (CENX).

Signal8 holds 4 ownership filings by Gudlaugsson Gunnar, all Form 4s, filed between Dec 9, 2024 and Feb 27, 2026. Those filings report 10 transactions, from Dec 5, 2024 to Feb 25, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Gudlaugsson Gunnar's filings is in CHICAGO, IL.

Recent filings by Gudlaugsson Gunnar

Feb 25, 2026: Open-market sale of CENX shares (Form 4, code S).
Jan 1, 2026: Grant or award of CENX shares (Form 4, code A).
Dec 31, 2025: Grant or award of CENX shares (Form 4, code A).
Dec 31, 2025: Tax withholdings of CENX shares (2 lines, Form 4, code F).
Jan 1, 2025: Grant or award of CENX shares (Form 4, code A).

Other insiders filing for CENTURY ALUMINUM CO (CENX)

Berntzen Jarl, Director
GLASSER ERROL, Director
Michelmore Andrew G, Director
Bush Jennifer Mary, Director
Olivier Tamla A, Director
Trpkovski Peter A, EVP, CFO

How to read Form 4 transaction codes