Robert F. Hoffman is CAO & VP at CENTURY ALUMINUM CO (CENX). They have made 6 open-market trades across 1 company since 2022, most recently 2026-03-11.
CIK 0001603836
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 6 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CENX | 56,643 | $1.7M |
Shares reported on the most recent Form 4, priced at the 2026-03-13 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CENX | SELL | 2026-03-11 | 2026-03-13 | $56.51 | $595K | -8.7% | +23.5% | +10.8% |
| CENX | SELL | 2026-03-04 | 2026-03-06 | $56.33 | $563K | +6.3% | +23.9% | +27.5% |
| CENX | SELL | 2025-03-20 | 2025-03-24 | $20.24 | $202K | -7.1% | -10.3% | -8.6% |
| CENX | SELL | 2025-03-14 | 2025-03-18 | $19.99 | $50K | -7.8% | -22.5% | -8.6% |
| CENX | SELL | 2023-12-20 | 2023-12-22 | $12.06 | $145K | -14.6% | -20.4% | -1.2% |
| CENX | SELL | 2022-03-04 | 2022-03-08 | $29.19 | $203K | -3.8% | +7.9% | -51.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.