Home / Filing-delay notices (10-K) / CENTURY ALUMINUM CO
Filed 2026-03-03 路 Form NT 10-K 路 Accession 0001628280-26-013780 mid
Price before filing: $51.36 (2026-03-02 close, split/dividend-adjusted)
Market cap at flag: $5.24B (2026-03-03) 路 Latest: $3.47B (2026-10-16)
| Window | CENX | SPY | vs SPY | |
|---|---|---|---|---|
| 30 days | +21.8% | -4.2% | +26.0% | 2026-04-02 |
| 90 days | +24.4% | +10.8% | +13.6% | 2026-06-01 |
| 180 days | -10.9% | +12.3% | -23.2% | 2026-08-31 |
| 1 year | pending | pending | until 2027-03-03 |
Return from the last close before the filing date to the first close on/after the window end. Pending windows have not fully elapsed. Past performance says nothing certain about the future.
90 days before the flag: 5 insiders sold $14.7M (5 sales)
30 days after: 6 insiders sold $338.3M (7 sales)
| Date | Insider | Type | Shares | Price | Value | 10b5-1 plan | Source |
|---|---|---|---|---|---|---|---|
| 2026-01-23 | Gary Jesse E President and CEO, Director | Sale | 150,000 | $48.19 | $7.2M | yes | Form 4 |
| 2026-02-23 | DeZee John EVP, GC and Secretary | Sale | 66,000 | $50.72 | $3.3M | no | Form 4 |
| 2026-02-25 | Gudlaugsson Gunnar EVP - Global Operations | Sale | 43,000 | $54.10 | $2.3M | no | Form 4 |
| 2026-02-27 | Hafberg Agust F SVP & Chief Commercial Officer | Sale | 22,884 | $51.24 | $1.2M | no | Form 4 |
| 2026-03-02 | Aboud Matt SVP, Strategy & Business Dev't | Sale | 12,126 | $52.50 | $637K | no | Form 4 |
| 2026-03-03: red flag filed | |||||||
| 2026-03-03 | Aboud Matt SVP, Strategy & Business Dev't | Sale | 2,971 | $52.67 | $156K | no | Form 4 |
| 2026-03-04 | GLENCORE INTERNATIONAL AG (+2 joint filers) 10% owner | Sale | 6,315,245 | $51.75 | $326.8M | no | Form 4 |
| 2026-03-04 | Hoffman Robert F SVP, IT and CAO | Sale | 10,000 | $56.33 | $563K | no | Form 4 |
| 2026-03-11 | Hoffman Robert F SVP, IT and CAO | Sale | 10,529 | $56.51 | $595K | no | Form 4 |
| 2026-03-12 | Calloway Kenneth L SVP, Human Resources | Sale | 18,000 | $58.00 | $1.0M | no | Form 4 |
| 2026-03-16 | Gary Jesse E President and CEO, Director | Sale | 150,000 | $55.47 | $8.3M | yes | Form 4 |
| 2026-03-25 | Trpkovski Peter A EVP, CFO | Sale | 16,739 | $50.51 | $845K | no | Form 4 |
Open-market purchases and sales (Form 4 codes P and S) by officers, directors and 10% owners, by transaction date, from 2025-12-03 to 2026-04-02. Excludes option exercises, grants, gifts and tax withholding. Amended filings replace the originals; joint filings count once. Foreign private issuers do not file Form 4. Many insider sales are pre-scheduled (10b5-1 plans) and are not by themselves a sign of wrongdoing.
The company filed Form NT 10-K, telling the SEC it could not file its annual report on time, and then filed the report within the 15-day extension. The SEC treats a report filed within the extension as timely, so this is the mildest kind of flag, but the notice itself is a warning sign that investors often react to: something, often the audit or the accounting, took longer than planned.
Status: filed within extension (report filed 2026-03-03) · the SEC treats a report filed within the extension as timely
Why this score: report filed within the extension on 2026-03-03
Read the original filing on SEC.gov →
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