Century Aluminum
Smelts primary aluminum and casts value-added products across the United States and Iceland.
$46.58
After-hours close−0.01 (−0.02%)
At close$46.59(+1.53%)
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Breakdown13F · Form 4
Institutions 109.21%Insiders 1.43%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 98.97M · Float 58.92M · 59.5% free float
Institutions13F, as of Jun 30, 2026
438 holders · 108.09M shares · 88 new positions · 262 increased · 113 reduced · 63 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Glencore PLC | 29.69M | 30.00% | 0 | Jul 14, 2026 |
| BlackRock, Inc. | 10.30M | 10.41% | +1.29M | Aug 7, 2026 |
| State Street Corp | 5.54M | 5.60% | +875.2K | Aug 7, 2026 |
| Vanguard Portfolio Management LLC | 4.77M | 4.82% | +532.2K | Aug 13, 2026 |
| Vanguard Capital Management LLC | 2.97M | 3.00% | +386.4K | Aug 13, 2026 |
| Invesco Ltd. | 2.42M | 2.44% | +341.3K | Aug 14, 2026 |
| Sourcerock Group LLC | 2.27M | 2.29% | −421.2K | Aug 14, 2026 |
| Dimensional Fund Advisors LP | 2.21M | 2.23% | +20.6K | Aug 11, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Glencore plcincl. Glencore AG, Glencore International AG | 29.99% | 29.69M | 13D | Mar 4, 2026 ↗ |
| BlackRock, Inc. | 8.20% | 8.14M | 13G | Apr 24, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Glencore International AG | 10 percent owner | 29.69M | 30.00% | Mar 4, 2026 |
| Jesse E. Gary | director, officer: President and CEO | 419.8K | 0.42% | Mar 17, 2026 |
| Jarl Berntzen | director | 211.1K | 0.21% | Jun 17, 2026 |
| Gunnar Gudlaugsson | officer: EVP - Global Operations | 136.4K | 0.14% | Feb 27, 2026 |
| Errol Glasser | director | 120.9K | 0.12% | Jun 17, 2026 |
| John DeZee | officer: EVP, GC and Secretary | 97.6K | 0.10% | Feb 25, 2026 |
| Andrew G. Michelmore | director | 90.6K | 0.09% | Jun 17, 2026 |
| Matt Aboud | officer: SVP, Strategy & Business Dev't | 64.8K | 0.07% | Mar 4, 2026 |
| Peter A. Trpkovski | officer: EVP, CFO | 64.1K | 0.06% | Mar 27, 2026 |
| Robert F. Hoffman | officer: SVP, IT and CAO | 56.6K | 0.06% | Mar 13, 2026 |
3 ten-percent owners hold 68.84M shares by Form 4 — the 13D/G table above shows those stakes, the figure above counts officers and directors only · 35 people have not refiled in the last 18 months (41.29M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Mar 25, 2026 | Peter A. Trpkovskiofficer: EVP, CFO | Sale | 16,739 | $50.51 | 64,125 |
| Mar 16, 2026 | Jesse E. Garydirector, officer: President and CEO | Sale | 150,000 | $55.47 | 142,580 |
| Mar 11, 2026 | Robert F. Hoffmanofficer: SVP, IT and CAO | Sale | 10,529 | $56.51 | 56,643 |
| Mar 12, 2026 | Kenneth L. Callowayofficer: SVP, Human Resources | Sale | 18,000 | $58.00 | 24,902 |
| Mar 4, 2026 | Robert F. Hoffmanofficer: SVP, IT and CAO | Sale | 10,000 | $56.33 | 67,172 |
| Mar 4, 2026 | Glencore International AG10 percent owner | Sale | 6,315,245 | $51.75 | 12,184,755 |
| Mar 3, 2026 | Matt Aboudofficer: SVP, Strategy & Business Dev't | Sale | 2,971 | $52.67 | 64,843 |
| Mar 2, 2026 | Matt Aboudofficer: SVP, Strategy & Business Dev't | Sale | 12,126 | $52.50 | 67,814 |
| Feb 27, 2026 | Agust F. Hafbergofficer: SVP & Chief Commercial Officer | Sale | 22,884 | $51.24 | 45,059 |
| Feb 25, 2026 | Gunnar Gudlaugssonofficer: EVP - Global Operations | Sale | 43,000 | $54.10 | 136,393 |
CongressHouse and Senate disclosures
Not reported.