PRQR insider buying
3 cluster buysProQR Therapeutics N.V.
When two or more insiders at ProQR Therapeutics N.V. buy PRQR in a qualifying detection window, the grouped purchases provide a starting point for further research. Below is every cluster we've detected in PRQR plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.
Detected clusters
- Jun 26 – Jul 17, 2026Detected Jul 21, 2026Executive buyer2 insidersTotal bought$988.4KMarket capUnknown
- Jun 26 – Jul 9, 2026Detected Jul 13, 2026Executive buyer2 insidersTotal bought$730.5KMarket capUnknown
- Jun 26 – Jul 7, 2026Detected Jul 8, 2026Executive buyer2 insidersTotal bought$469.5KMarket cap$227.2M
All notable open-market buys in PRQR
Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.
| Date | Insider | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Jul 17, 2026 | Filius Bartcluster Director | 150,000 | $1.72 | $257.9K | SEC ↗ |
| Jul 9, 2026 | de Boer Daniel Antoncluster Director, Chief Executive Officer | 150,000 | $1.74 | $261.0K | SEC ↗ |
| Jul 7, 2026 | de Boer Daniel Antoncluster Director, Chief Executive Officer | 150,000 | $1.59 | $238.5K | SEC ↗ |
| Jun 26, 2026 | Filius Bartcluster Director | 150,000 | $1.54 | $231.0K | SEC ↗ |
PRQR insider buying — FAQ
- Are insiders buying PRQR stock?
- Yes — 2 distinct insiders have bought PRQR (ProQR Therapeutics N.V.) on the open market, including 3 cluster buys where two or more insiders bought within a rolling window. The most recent qualifying activity was Jul 21, 2026.
- How much PRQR stock have insiders bought?
- Insiders have bought a combined $988.4K of PRQR across 4 open-market purchases, based on SEC Form 4 filings.
- What is an insider cluster buy in PRQR?
- A cluster buy is two or more distinct ProQR Therapeutics N.V. insiders — officers, directors, or 10% owners — each buying PRQR on the open market within a rolling window. PRQR has 3 detected cluster buys to date.
- Where does this PRQR insider trading data come from?
- Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.
How we track insider buying in PRQR
We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy PRQR within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Transactions link to official filings; prices and market capitalizations may be cached market data. Read our methodology and data limits before interpreting the figures. What counts as a cluster buy?
This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding PRQR.