Summary
Updated Aug 30, 2026
Marco Portmann is Group Chief Financial Officer of Aebi Schmidt Holding AG (AEBI). 4 SEC Form 4 filings on record going back to 2025, most recently on 3 June 2026. Most recent open-market trade: bought $57K of AEBI on 19 May 2026. Lifetime open-market purchases: $174K. Historical track record: 5/5 stars across 3 tracked purchases.
Recent Transactions
4Every recent SEC Form 4 transaction Marco Portmann 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 Marco Portmann 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.
- Steffen Schewerda - $112K of AEBI open-market activity in the last 12 months
- Patrick Francois Schaub - $74K of AEBI open-market activity in the last 12 months
- Thomas Schenkirsch - $71K of AEBI open-market activity in the last 12 months
- Barend Gerrit Fruithof - $60K of AEBI open-market activity in the last 12 months
- Henning Schroeder - $34K of AEBI open-market activity in the last 12 months
- Marcus Andreas Scherer - $24K of AEBI 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 Marco Portmann?
Marco Portmann is a corporate insider, tracked as Group Chief Financial Officer of Aebi Schmidt Holding AG (AEBI). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Marco Portmann submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Marco Portmann been buying or selling stock?
Recorded transactions: 3 open-market purchases ($174K) and 0 open-market sales across all tracked filings.
How accurate is Marco Portmann's historical track record?
Across 3 tracked purchases, Marco Portmann averaged +11.0% avg 30-day return with a 100% 30-day win rate. InsiderAlpha rates the track record at 5/5 stars.
Where can I see all of Marco Portmann'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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