Dudediligence.

Century Aluminum Company

CENXNASDAQ · Primary Production of Aluminum
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Last 12 months

Sales planned on beside the trades reported on , and whether each names a .

Planned ·

$329.4M

11 notices · 15,925,881 sh

Oct 2025 to Oct 2026

Reported ·

$625.3M

13 sales · 0 buys

Oct 2025 to Jun 2026

The two figures cover different periods.

2 of 13 reported sales carry the 10b5-1 box. Together they are 15.98% of the shares on issue.

PLANNED · FORM 144Oct 2025 to Oct 2026REPORTED · FORM 4Oct 2025 to Jun 2026N2025DJ2026FMAMJJASO2026-06-09: Berntzen Jarl, Form 1442026-03-25: Trpkovski Peter A, Form 1442026-03-12: Calloway Kenneth L, Form 1442026-03-04: Glencore International AG, Form 1442026-03-02: Hoffman Robert F, Form 1442026-02-27: Aboud Matt, Form 1442026-02-25: Hafberg Agust F, Form 1442026-02-25: Gudlaugsson Gunnar, Form 1442026-02-23: DeZee John, Form 1442026-01-23: Jesse E. Gary, Form 1442025-11-10: Glencore International AG, Form 1442025-11-10: GLENCORE INTERNATIONAL AG, sold2026-01-23: Gary Jesse E, sold2026-02-23: DeZee John, sold2026-02-25: Gudlaugsson Gunnar, sold2026-02-27: Hafberg Agust F, sold2026-03-02: Aboud Matt, sold2026-03-04: GLENCORE INTERNATIONAL AG, sold2026-03-04: Hoffman Robert F, sold2026-03-11: Hoffman Robert F, sold2026-03-12: Calloway Kenneth L, sold2026-03-16: Gary Jesse E, sold2026-03-25: Trpkovski Peter A, sold
under a no plan named▼ salesize is dollars

Form 144 notices, newest first

2026-06-09Berntzen Jarl, Director$5,911,397
93,387 shno plan dateForm 4s on file end Jun 23144 ↗
2026-03-25Trpkovski Peter A, EVP, CFO$844,540
16,739 shno plan date144 ↗
Form 4, 2026-03-27: sold 16,739 at $50.51 Form 4 ↗
2026-03-12Calloway Kenneth L, SVP, Human Resources$1,055,520
18,000 shno plan date144 ↗
Form 4, 2026-03-13: sold 18,000 at $58.00 Form 4 ↗
2026-03-04Glencore International AG, 10% Stockholder$52
6,315,245 shno plan date144 ↗
Form 4, 2026-03-04: sold 6,315,245 at $51.75 Form 4 ↗
2026-03-02Hoffman Robert F, SVP, IT and CAO$1,058,475
20,529 shno plan date144 ↗
Form 4, 2026-03-06: sold 10,000 at $56.33 Form 4 ↗
2026-02-27Aboud Matt, SVP, Strategy & Business Dev't$1,546,986
30,097 shno plan date144 ↗
Form 4, 2026-03-04: sold 15,097 at $52.53 Form 4 ↗
2026-02-25Hafberg Agust F, SVP & Chief Commercial Officer$1,240,084
22,884 shno plan date144 ↗
Form 4, 2026-03-03: sold 22,884 at $51.24 Form 4 ↗
2026-02-25Gudlaugsson Gunnar, EVP - Global Operations$2,323,720
43,000 shno plan date144 ↗
Form 4, 2026-02-27: sold 43,000 at $54.10 Form 4 ↗
2026-02-23DeZee John, EVP, GC and Secretary$3,474,240
66,000 shno plan date144 ↗
Form 4, 2026-02-25: sold 66,000 at $50.72 Form 4 ↗
2026-01-23Jesse E. Gary, President and CEO$14.5M
300,000 shplan 2025-08-20144 ↗
Form 4, 2026-01-23: sold 150,000 at $48.19 Form 4 ↗
2025-11-10Glencore International AG, 10% Stockholder$297.4M
9,000,000 shno plan date144 ↗
Form 4, 2025-11-13: sold 9,000,000 at $30.25 Form 4 ↗