Summary
Updated Aug 31, 2026
Boer Klaas de is Director of SmartKem, Inc. (SMTK). 1 SEC Form 4 filing on record, dated 3 September 2025.
Trading Pattern
InsiderAlpha's records for Boer Klaas de go back to 2025: 1 primary Form 4 filing, an average of 0.5 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 Sector
No other insider has filed at Boer Klaas de's companies, so these are insiders reporting open-market trades at other companies in the same sector.
- Craig A. Lampo - $90.02M of APH open-market activity in the last 12 months
- Ronald Clarke - $88.51M of CPAY open-market activity in the last 12 months
- Arthur D. Levinson - $86.74M of AAPL open-market activity in the last 12 months
- Strauss Zelnick - $86.03M of TTWO open-market activity in the last 12 months
- Alclear Investments, LLC - $84.88M of YOU open-market activity in the last 12 months
- Becker Caryn Seidman - $84.88M of YOU 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 Boer Klaas de?
Boer Klaas de is a corporate insider, tracked as Director of SmartKem, Inc. (SMTK). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Boer Klaas de last file a Form 4?
The only primary Form 4 on record is dated 3 September 2025.
Where can I see all of Boer Klaas de'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 Boer Klaas de 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