Summary
Updated Aug 31, 2026
Kenneth L. Calloway is SVP, Human Resources of CENTURY ALUMINUM CO (CENX). 2 SEC Form 4 filings on record going back to 2025, most recently on 13 March 2026. Most recent open-market trade: sold $1.04M of CENX on 13 March 2026. Lifetime open-market sales: $1.50M.
Recent Transactions
2Every recent SEC Form 4 transaction Kenneth L. Calloway has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Kenneth L. Calloway go back to 2025: 2 primary Form 4 filings, an average of 1.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Kenneth L. Calloway files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- GLENCORE INTERNATIONAL AG - $599.06M of CENX open-market activity in the last 12 months
- Jesse E. Gary - $15.55M of CENX open-market activity in the last 12 months
- John Dezee - $3.35M of CENX open-market activity in the last 12 months
- Gunnar Gudlaugsson - $2.33M of CENX open-market activity in the last 12 months
- Agust F. Hafberg - $1.44M of CENX open-market activity in the last 12 months
- Robert F. Hoffman - $1.16M of CENX open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Kenneth L. Calloway?
Kenneth L. Calloway is a corporate insider, tracked as SVP, Human Resources of CENTURY ALUMINUM CO (CENX). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Kenneth L. Calloway last file a Form 4?
The most recent primary Form 4 on record is dated 13 March 2026, one of 2 filings going back to 2025.
Has Kenneth L. Calloway been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($1.50M) across all tracked filings.
Where can I see all of Kenneth L. Calloway's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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