Latest filing published 03 Aug 2026 for ProQR Therapeutics N.V., €307k.
Filing timeline
BuySaleInsider track record
Closed purchases
Based on 2 purchases whose 90-day window has closed (published at least 91 days ago), the same population our ranking model reads.
Purchases by company
Since each purchase
- -27.3%Entry US$1.83 · Close 22 Oct 2026 US$1.33
- -21.8%Entry US$1.70 · Close 22 Oct 2026 US$1.33
- -24.4%Entry US$1.76 · Close 22 Oct 2026 US$1.33
Entry is the close on the day after publication, the first price a reader could act on. Prices in the listing currency. Past moves are not a forecast.
Daniel Anton de Boer: trading record in brief
Daniel Anton de Boer appears in our data through filings on ProQR Therapeutics N.V. shares, published by SEC (Form 4). The record holds 3 filings, for trades running from 7 July 2026 to 31 July 2026.
On the market, this insider has only ever bought: 3 purchases, €744k in total. Open-market purchases are the filings investors watch most closely, because the insider pays for the shares out of pocket.
In size, the median ticket on the buying side is €228k. Scaled by market value, the purchases weigh a median 0.11% of market cap (sample: 3 purchases). On 1 out of 3 purchases, another insider of the same company was buying within the same 30 days. Such overlaps are known as a cluster signal: distinct people reaching the same decision at about the same time.
On 3 August 2026 came the latest disclosure, an open-market purchase for €307k in ProQR Therapeutics N.V. Typically, a trade is published a median of 3 days after it takes place. US insiders must file a Form 4 within two business days of a trade. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.
Companies and markets linked to Daniel Anton de Boer
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
- 200,000 shares@ US$1.76980.14% mcap41.3% of flowOrdinary SharesSEC:0001104659-26-089780:0Canonical exit: 29 Oct 2026 (T+90)
- 150,000 shares@ US$1.740.11% mcap30.7% of flowOrdinary SharesSEC:0001104659-26-082890:0Canonical exit: 7 Oct 2026 (T+90)
- 150,000 shares@ US$1.590.098% mcap28.0% of flowOrdinary SharesSEC:0001104659-26-081762:0Canonical exit: 5 Oct 2026 (T+90)
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