GUDLAUGSSON GUNNAR

PrivateCIK: 1846594
Location

CHICAGO, IL

GUDLAUGSSON GUNNAR (EVP - Global Operations) sold 24.0% of their position (43K shares) of CENTURY ALUMINUM CO on the open market

Open‑market sale worth $2.33M — a significant reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderGUDLAUGSSON GUNNARCIK 1846594
IssuerCENTURY ALUMINUM COCIK 949157
Officer· EVP - Global Operations
Since Feb 2021
-43K
Net shares
Net seller
$2.33M
Total sold
1
Open market trades
0B · 1S
1
Total transactions
43K disposed
Non-Derivative Transactions1

Common Stock

Direct
S · Sale

Shares

43K

Price / share

$54.10

Trade value

$2.33M

% of position

24.0%
2/25/2026
179.39K136.39K
Total

Net shares

43K

Net value

-$2.33M

Derivative Transactions0
No derivative transactions reported
GUDLAUGSSON GUNNAR — Insider Transaction (Form 4) Filed Feb 27, 2026 | Finecho