PRQR · Insider Trading

ProQR Therapeutics N.V. Ordinary Shares

Iron condor setups Expected move IV rank history Fibonacci levels Insider trading

Every open-market purchase and sale reported by PRQR officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Form 4 Filings

most recent

Open-Market Buys

code P

Sales

code S

Reporting Insiders

current holders

PRQR — Recent Form 4 Transactions (latest 2026-08-03)

Filed	Insider	Role	Type	Shares	Value
2026-08-03	Daniel Anton de Boer	Chief Executive Officer	Buy	+200,000	+$353.96K
2026-07-21	Bart Filius	Director	Buy	+150,000	+$257.93K
2026-07-13	Daniel Anton de Boer	Chief Executive Officer	Buy	+150,000	+$261.00K
2026-07-08	Daniel Anton de Boer	Chief Executive Officer	Buy	+150,000	+$238.50K
2026-06-03	Gylvin Lykke Hinsch	Director	A	+14,495 deriv.	—

PRQR — Current Insider Holders

Insider	Role	Shares Held	Value
Daniel Anton de Boer	Chief Executive Officer	500,000	$620.00K
Bart Filius	Director	300,000	$372.00K

PRQR Insider Trading FAQ

Who are the insiders at PRQR?

2 officers, directors and 10%+ beneficial owners currently report holdings in PRQR via SEC Form 4.

Are PRQR insiders buying or selling?

Across the 5 most recent Form 4 filings for PRQR, 4 were open-market purchases (code P) and 0 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.

How current is PRQR insider data?

Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent PRQR filing is dated 2026-08-03.

How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the PRQR quote page; the site-wide leaderboard is on the insider transactions hub.