ProQR Therapeutics N.V. (PRQR) Insider Trading
Over the last 3 months, PRQR insiders made 5 open-market buys and 0 sales, a net purchase of $1.3M (SEC Form 4). Over the last 6 months, 37 institutions increased and 26 reduced their position (13F).
Insider Activity
Sentiment
100/100
Buys (3m)
5
Sells (3m)
0
Net (3m)
$1.3M
Insiders buying
Insider trades by month Buys Sells
Jun
Jul
Aug
Context3-month price +17.5%Institutions reducing (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 3, 2026 | de Boer Daniel Antondirector, officer: Chief Executive Officer | Buy | 200,000 | $1.77 |
| Jul 21, 2026 | Filius Bartdirector | Buy | 150,000 | $1.72 |
| Jul 13, 2026 | de Boer Daniel Antondirector, officer: Chief Executive Officer | Buy | 150,000 | $1.74 |
| Jul 8, 2026 | de Boer Daniel Antondirector, officer: Chief Executive Officer | Buy | 150,000 | $1.59 |
| Jun 30, 2026 | Hinsch Gylvin Lykkedirector | Grant | 14,595 | $1.42 |
| Jun 30, 2026 | Filius Bartdirector | Buy | 150,000 | $1.54 |
Source: PRQR SEC Form 4 filings, latest Aug 3, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their PRQR positions over the last 6 months (SEC Form 13F).
Increased
37
New positions
14
Reduced
26
Sold out
35
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Unchanged | 6.3M | May 15, 2026 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Unchanged | 6.3M | Feb 17, 2026 |
| PRIVIUM FUND MANAGEMENT B.V. | Increased | 5.5M | May 5, 2026 |
| ABRDN PLC | Increased | 3.3M | Apr 29, 2026 |
| AFFINITY ASSET ADVISORS, LLC | Reduced | 2.5M | Feb 13, 2026 |
| AFFINITY ASSET ADVISORS, LLC | Unchanged | 2.5M | May 14, 2026 |
| SIO CAPITAL MANAGEMENT, LLC | Increased | 2.2M | Feb 17, 2026 |
| SIO CAPITAL MANAGEMENT, LLC | Reduced | 2.0M | May 14, 2026 |
| DAFNA CAPITAL MANAGEMENT LLC | Unchanged | 1.6M | May 15, 2026 |
| DAFNA CAPITAL MANAGEMENT LLC | Unchanged | 1.6M | Feb 17, 2026 |
| KYNAM CAPITAL MANAGEMENT, LP | Unchanged | 1.6M | May 15, 2026 |
| KYNAM CAPITAL MANAGEMENT, LP | Reduced | 1.6M | Feb 17, 2026 |
| IKARIAN CAPITAL, LLC | Unchanged | 1.5M | May 15, 2026 |
| IKARIAN CAPITAL, LLC | Increased | 1.5M | Feb 18, 2026 |
| MORGAN STANLEY | Reduced | 1.4M | Feb 13, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.