Summary
Updated Aug 31, 2026
Jarl Berntzen is Director of CENTURY ALUMINUM CO (CENX). 1 SEC Form 4 filing on record, dated 17 June 2026.
Recent Transactions
1Every recent SEC Form 4 transaction Jarl Berntzen has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Jarl Berntzen go back to 2026: 1 primary Form 4 filing, 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 Jarl Berntzen 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 Jarl Berntzen?
Jarl Berntzen is a corporate insider, tracked as Director of CENTURY ALUMINUM CO (CENX). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Jarl Berntzen submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Where can I see all of Jarl Berntzen'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.
Learn More
Follow Jarl Berntzen and every insider like them
A free account opens the full scored daily plan and every past day, a watchlist for any ticker, and 3 months of price history on every company page. No card.
Free plan available · Paid plans start with a 7-day free trial