Summary
Updated Aug 31, 2026
Peter A. Trpkovski is EVP, CFO of CENTURY ALUMINUM CO (CENX). 2 SEC Form 4 filings on record, most recently on 27 March 2026. Most recent open-market trade: sold $845K of CENX on 27 March 2026. Lifetime open-market sales: $845K.
Recent Transactions
2Every recent SEC Form 4 transaction Peter A. Trpkovski has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Peter A. Trpkovski 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
- Kenneth L. Calloway - $1.50M 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
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Peter A. Trpkovski?
Peter A. Trpkovski is a corporate insider, tracked as EVP, CFO of CENTURY ALUMINUM CO (CENX). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Peter A. Trpkovski last file a Form 4?
The most recent primary Form 4 on record is dated 27 March 2026, one of 2 filings going back to 2026.
Has Peter A. Trpkovski been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($845K) across all tracked filings.
Where can I see all of Peter A. Trpkovski'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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