Summary
Updated Aug 31, 2026
Boer Daniel Anton de is Chief Executive Officer, Director of ProQR Therapeutics N.V. (PRQR). 3 SEC Form 4 filings on record, most recently on 3 August 2026. Most recent open-market trade: bought $354K of PRQR on 3 August 2026. Lifetime open-market purchases: $853K.
Recent Transactions
3Every recent SEC Form 4 transaction Boer Daniel Anton de 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 Boer Daniel Anton de 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.
- Bart Filius - $489K of PRQR 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 Daniel Anton de?
Boer Daniel Anton de is a corporate insider, tracked as Chief Executive Officer, Director of ProQR Therapeutics N.V. (PRQR). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Boer Daniel Anton de submitted recently?
3 primary Form 4 filings in the last 90 days, covering 1 company.
Has Boer Daniel Anton de been buying or selling stock?
Recorded transactions: 3 open-market purchases ($853K) and 0 open-market sales across all tracked filings.
Where can I see all of Boer Daniel Anton 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.
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