Century Aluminum Company (CENX)
Nasdaq: CENX · Primary Production of Aluminum · Chicago, IL · filing with the SEC since 1996
Grade4.1
◀ Past 3.4● Present 4.7▶ Future 3.9
Who owns Century Aluminum Company
As filed with the SECHolders of 5% or more
3
Glencore International AG holds 30% of Common Stock, $0.01 Par Value, as its SCHEDULE 13D/A filed Mar 4, 2026 says.
Directors and officers
13
report now, of 25 people on the record since 2006. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 3 named at left.
Holders of 5% or moreshare of the class, as filed
Glencore International AG
SCHEDULE 13D/A · filed Mar 4, 2026 · Common Stock, $0.01 Par Value · 36.6% in Nov 12, 2025
Blackrock, Inc.
SCHEDULE 13G/A · filed Oct 5, 2026 · Common Stock · 9.5% in Jul 27, 2026
State Street Corporation
SCHEDULE 13G · filed Aug 7, 2026 · COMMON STOCK
The Vanguard Group
SCHEDULE 13G/A · filed Mar 26, 2026 · Common Stock · reported falling below 5%, from 7.43% in Jan 30, 2026
What CENX reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
Emirates Global Aluminum
An entity · legal entity · owns, named in the 10-K filed Mar 3, 2026
General Alumina Holdings Limited
A company bought · acquisition, legal entity · Apr 2023 · owns, named in the 10-K filed Mar 3, 2026
30 subsidiaries in 6 countries, from the list filed with the 10-K filed Mar 3, 2026.
Insider tradesForm 4
11sales
0purchases
2sales on a scheduled plan
8people selling
$26.2Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Sep 30, 2025 to Sep 30, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Sep 30, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window10 of 32 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Glencore AG | 10% owner | 1 | $327M | 0 | 0 | $0 |
| Glencore International AG | 10% owner | 1 | $272M | 0 | 0 | $0 |
| Gary Jesse E | President and CEO | 2 | $15.5M | 2 | 0 | $0 |
| Dezee John | EVP, GC and Secretary | 1 | $3.3M | 0 | 0 | $0 |
| Gudlaugsson Gunnar | EVP - Global Operations | 1 | $2.3M | 0 | 0 | $0 |
| Hafberg Agust F | SVP & Chief Commercial Officer | 1 | $1.2M | 0 | 0 | $0 |
| Hoffman Robert F | SVP, IT and CAO | 2 | $1.2M | 0 | 0 | $0 |
| Calloway Kenneth L | SVP, Human Resources | 1 | $1.0M | 0 | 0 | $0 |
| Trpkovski Peter A | EVP, CFO | 1 | $800,000 | 0 | 0 | $0 |
| Aboud Matt | SVP, Strategy & Business Dev't | 2 | $800,000 | 0 | 0 | $0 |