CENX insider buying and SEC filings, explained
Century Aluminum Co. · CIK 949157
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Company profile
- Exchanges
- Nasdaq
- Industry (SIC)
- Primary Production of Aluminum
- State of incorporation
- DE
- Fiscal year end
- Dec 31
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$19.0M
Planned sales (10b5-1)
$7.2M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Mar 25, 2026 | Sale | Peter A Trpkovski (CFO) sold 16,739 shares at about $50.51 ($845K). Holdings down 21% to 64,125 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 27, 2026 |
| Mar 16, 2026 | Sale | Jesse E Gary (CEO and Director) sold 150,000 shares indirectly (by trust) at about $55.47 ($8.3M). Holdings by trust down 51% to 142,580 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 17, 2026 |
| Mar 12, 2026 | Sale | Kenneth L Calloway (SVP, Human Resources) sold 18,000 shares at $58.00 ($1.0M). Holdings down 42% to 24,902 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 13, 2026 |
| Mar 11, 2026 | Sale | Robert F Hoffman (SVP, IT and CAO) sold 10,529 shares at about $56.51 ($595K). Holdings down 16% to 56,643 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 13, 2026 |
| Mar 4, 2026 | Sale | Robert F Hoffman (SVP, IT and CAO) sold 10,000 shares at about $56.33 ($563K). Holdings down 13% to 67,172 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 6, 2026 |
| Mar 2–3, 2026 | Sale | Matt Aboud (SVP, Strategy & Business Dev't) sold 15,097 shares between Mar 2 and Mar 3 at about $52.53 ($793K). Holdings down 19% to 64,843 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 4, 2026 |
| Feb 27, 2026 | Sale | Agust F Hafberg (SVP & Chief Commercial Officer) sold 22,884 shares at $51.24 ($1.2M). Holdings down 34% to 45,059 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 3, 2026 |
| Feb 25, 2026 | Sale | Gunnar Gudlaugsson (EVP - Global Operations) sold 43,000 shares at $54.10 ($2.3M). Holdings down 24% to 136,393 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 27, 2026 |
| Feb 23, 2026 | Sale | John DeZee (EVP, GC and Secretary) sold 66,000 shares at about $50.72 ($3.3M). Holdings down 40% to 97,647 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 25, 2026 |
| Jan 23, 2026 | Planned (10b5-1) | Jesse E Gary (CEO and Director) sold 150,000 shares indirectly (by trust) at about $48.19 ($7.2M), marked as a 10b5-1 plan trade. Holdings by trust down 34% to 292,580 shares. | SEC filing Filed Jan 23, 2026 |
16 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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