CENTURY ALUMINUM (CENX) — insider trading
Materials · NASDAQ
CENTURY ALUMINUM (CENX) has 14 reported SEC Form 4 insider transactions in our data, including 8 open-market sales among the most recent 14 (latest 2026-06-15).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-06-15 | Olivier Tamla A | Director | Grant / award / vesting | 2,172 | $0.00 | $0 | Form 4 |
| 2026-06-15 | Bush Jennifer Mary | Director | Grant / award / vesting | 2,172 | $0.00 | $0 | Form 4 |
| 2026-06-15 | Michelmore Andrew G | Director | Shares withheld for taxes / exercise cost | 652 | $54.55 | $35.6K | Form 4 |
| 2026-06-15 | Michelmore Andrew G | Director | Grant / award / vesting | 2,172 | $0.00 | $0 | Form 4 |
| 2026-06-15 | GLASSER ERROL | Director | Grant / award / vesting | 2,172 | $0.00 | $0 | Form 4 |
| 2026-06-15 | Berntzen Jarl | Director | Grant / award / vesting | 2,172 | $0.00 | $0 | Form 4 |
| 2026-03-25 | Trpkovski Peter A | Officer (EVP, CFO) | Open-market sale | 16,739 | $50.51 | $845.5K | Form 4 |
| 2026-03-16 | Gary Jesse E | Director, Officer (President and CEO) | Open-market sale | 150,000 | $55.47 | $8.32M | Form 4 |
| 2026-03-12 | Calloway Kenneth L | Officer (SVP, Human Resources) | Open-market sale | 18,000 | $58.00 | $1.04M | Form 4 |
| 2026-03-11 | Hoffman Robert F | Officer (SVP, IT and CAO) | Open-market sale | 10,529 | $56.51 | $595.0K | Form 4 |
| 2026-03-04 | Hoffman Robert F | Officer (SVP, IT and CAO) | Open-market sale | 10,000 | $56.33 | $563.3K | Form 4 |
| 2026-03-04 | GLENCORE INTERNATIONAL AG; Glencore AG; Glencore plc | 10% owner | Open-market sale | 6,315,245 | $51.75 | $326.81M | Form 4 |
| 2026-03-03 | Aboud Matt | Officer (SVP, Strategy & Business Dev't) | Open-market sale | 2,971 | $52.67 | $156.5K | Form 4 |
| 2026-03-02 | Aboud Matt | Officer (SVP, Strategy & Business Dev't) | Open-market sale | 12,126 | $52.50 | $636.6K | Form 4 |
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Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: CENTURY ALUMINUM (CENX).
Last updated 2026-06-15 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.