CENTURY ALUMINUM CO Insider Trading Activity
Every SEC Form 4 insider transaction reported for CENTURY ALUMINUM CO (CENX), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are CENX insiders buying or selling?
In the last 12 months, CENTURY ALUMINUM CO insiders reported 0 open-market purchases ($0) and 12 sales ($625.3M) — net selling of $625.3M. Since March 2018, Trabud has recorded 67 Form 4 filings for CENX: 5 buys ($290.0K) and 62 sells ($642.5M).
Source: SEC EDGAR Form 4
What stands out
- No CENTURY ALUMINUM CO insider made an open-market purchase in the last 12 months; the 12 reported open-market sales totaled $625.3M.
Key Statistics (March 2018 – Mar 27, 2026)
Total Form 4 filings
67
SEC EDGAR
Insider filers
15
Insider buys (5)
$290.0K
Insider sells (62)
$642.5M
Insider sentiment
Net sellingNet insider flow of $642.2M in net selling since March 2018, and $625.3M in net selling over the last 12 months.
Recent CENX insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Mar 27, 2026 | Peter A Trpkovski | EVP, CFO | Sale | 16.7K | $50.51 | $845.5K | SEC ↗ |
| Mar 17, 2026 | Jesse E Gary | President and CEO | Sale | 150.0K | $55.47 | $8.3M | SEC ↗ |
| Mar 13, 2026 | Kenneth L Calloway | SVP, Human Resources | Sale | 18.0K | $58.00 | $1.0M | SEC ↗ |
| Mar 13, 2026 | Robert F Hoffman | SVP, IT and CAO | Sale | 10.5K | $56.51 | $595.0K | SEC ↗ |
| Mar 6, 2026 | Robert F Hoffman | SVP, IT and CAO | Sale | 10.0K | $56.33 | $563.3K | SEC ↗ |
| Mar 4, 2026 | Matt Aboud | SVP, Strategy & Business Dev't | Sale | 15.1K | $52.53 | $793.1K | SEC ↗ |
| Mar 4, 2026 | International AG Glencore | 10% Owner | Sale | 6.3M | $51.75 | $326.8M | SEC ↗ |
| Mar 3, 2026 | Agust F Hafberg | SVP & Chief Commercial Officer | Sale | 22.9K | $51.24 | $1.2M | SEC ↗ |
| Feb 27, 2026 | Gunnar Gudlaugsson | EVP - Global Operations | Sale | 43.0K | $54.10 | $2.3M | SEC ↗ |
| Feb 25, 2026 | John Dezee | EVP, GC and Secretary | Sale | 66.0K | $50.72 | $3.3M | SEC ↗ |
| Jan 24, 2026 | Jesse E Gary | President and CEO | Sale | 150.0K | $48.19 | $7.2M | SEC ↗ |
| Nov 13, 2025 | International AG Glencore | 10% Owner | Sale | 9.0M | $30.25 | $272.3M | SEC ↗ |
| Sep 30, 2025 | Agust F Hafberg | SVP & Chief Commercial Officer | Sale | 9.5K | $27.91 | $264.9K | SEC ↗ |
| Sep 23, 2025 | Kenneth L Calloway | SVP, Human Resources | Sale | 16.4K | $27.50 | $452.4K | SEC ↗ |
| Aug 14, 2025 | Matt Aboud | SVP, Strategy & Business Dev't | Sale | 12.0K | $23.27 | $279.9K | SEC ↗ |
| Mar 24, 2025 | Robert F Hoffman | SVP, IT and CAO | Sale | 5.0K | $20.24 | $101.2K | SEC ↗ |
| Mar 18, 2025 | Robert F Hoffman | SVP, IT and CAO | Sale | 2.5K | $19.99 | $50.0K | SEC ↗ |
| Dec 30, 2024 | Jesse E Gary | President and CEO | Sale | 79.2K | $18.66 | $1.5M | SEC ↗ |
| Dec 9, 2024 | Gunnar Gudlaugsson | EVP - Global Operations | Sale | 20.0K | $23.85 | $477.0K | SEC ↗ |
| Jun 28, 2024 | Jesse E Gary | President and CEO | Sale | 60.0K | $16.21 | $972.6K | SEC ↗ |
| Mar 6, 2024 | Matt Aboud | SVP, Strategy & Business Dev't | Sale | 3.8K | $10.61 | $40.0K | SEC ↗ |
| Jan 2, 2024 | Peter A Trpkovski | SVP, Finance and Treasurer | Sale | 13.9K | $12.32 | $171.3K | SEC ↗ |
| Dec 28, 2023 | Jesse E Gary | President and CEO | Sale | 138.2K | $12.59 | $1.7M | SEC ↗ |
| Dec 23, 2023 | Robert F Hoffman | VP, IT and CAO | Sale | 12.0K | $12.06 | $144.7K | SEC ↗ |
| May 15, 2023 | Matt Aboud | SVP, Strategy & Business Dev't | Purchase | 18.0K | $7.25 | $130.5K | SEC ↗ |
Showing the 25 most recent of 67 Form 4 filings for CENTURY ALUMINUM CO.
Most active CENX insiders
- Michael A Bless16 filings
- Jesse E Gary12 filings
- John E. Hoerner7 filings
- Robert F Hoffman6 filings
- Matt Aboud4 filings
Ask anything about CENX insider activity
Use Trabud's AI agent to query CENTURY ALUMINUM CO's Form 4 history in plain English — "Show me CENX CEO purchases this year" or compare it against any other ticker.
Open the AI agentCENX insider trading FAQ
Are CENTURY ALUMINUM CO insiders buying or selling?
In the last 12 months, CENTURY ALUMINUM CO insiders reported 0 open-market purchases ($0) and 12 sales ($625.3M) — net selling of $625.3M. Since March 2018, Trabud has recorded 67 Form 4 filings for CENX: 5 buys ($290.0K) and 62 sells ($642.5M). Over the full record that is net selling of $642.2M.
How many insiders trade CENX stock?
15 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for CENTURY ALUMINUM CO. The most recent filing was accepted on Mar 27, 2026.
Where does Trabud get CENX insider trading data?
All CENX insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.