PRQR insider buying and SEC filings, explained
ProQR Therapeutics N.V. · CIK 1612940
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$1.3M
Insiders who bought
2
Sold (not marked 10b5-1)
$0
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Jul 31, 2026 | Purchase (code P) | Boer Daniel Anton de (CEO and Director) bought 200,000 shares at $1.77 ($354K), reported as a purchase (code P). Holdings up 67% to 500,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 3, 2026 |
| Jul 17, 2026 | Purchase (code P) | Bart Filius (Director) bought 150,000 shares at $1.72 ($258K), reported as a purchase (code P). Holdings up 100% to 300,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 21, 2026 |
| Jul 9, 2026 | Purchase (code P) | Boer Daniel Anton de (CEO and Director) bought 150,000 shares at $1.74 ($261K), reported as a purchase (code P). Holdings up 100% to 300,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 13, 2026 |
| Jul 7, 2026 | Purchase (code P) | Boer Daniel Anton de (CEO and Director) bought 150,000 shares at $1.59 ($239K), reported as a purchase (code P). New position of 150,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 8, 2026 |
| Jun 26, 2026 | Purchase (code P) | Bart Filius (Director) bought 150,000 shares at $1.54 ($231K), reported as a purchase (code P). New position of 150,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 30, 2026 |
1 routine transaction (such as a grant, option exercise or tax withholding) is not listed.
Cluster buys
2 insiders bought in 30 days
$1.3M in purchases since Jun 26, 2026 · Purchases traded Jun 26, 2026 to Jul 31, 2026 · Closed
| Insider | Value | Traded | Source |
|---|---|---|---|
| Bart Filius (Director) | $231K | Jun 26, 2026 | SEC filing |
| Boer Daniel Anton de (CEO) | $239K | Jul 7, 2026 | SEC filing |
| Boer Daniel Anton de (CEO) | $261K | Jul 9, 2026 | SEC filing |
| Bart Filius (Director) | $258K | Jul 17, 2026 | SEC filing |
| Boer Daniel Anton de (CEO) | $354K | Jul 31, 2026 | SEC filing |
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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