Public ownership evidence

ProQR Therapeutics N.V. Ordinary Shares (PRQR) Ownership Disclosures

Read PRQR insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-10T12:08:28.848Z

Separate the three disclosure sources

Step 1 of 3

Recent Form 4 activity

ProQR Therapeutics N.V. Ordinary Shares: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-08-04
Trade date
2026-07-31
Reporting owners
de Boer Daniel Anton
Code
P
Shares
200,000
Reported value
Not reported
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

SEC 0001104659-26-089780
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read PRQR fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read PRQR fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

See the complete recent form 4 activity
2026-08-042026-07-31de Boer Daniel AntonP200,000Not reported
2026-07-222026-07-17Filius BartP150,000Not reported
2026-07-142026-07-09de Boer Daniel AntonP150,000Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

Palo Alto Investors LP2026-06-302026-08-20188,807$351,181None
Palo Alto Investors LP2026-06-302026-08-19188,807$351,181None
Palo Alto Investors LP2026-06-302026-08-18188,807$351,181None
Squadron Capital Management LLC2026-06-302026-08-151,511,496$2,811,383None
ADAR1 Capital Management, LLC2026-06-302026-08-1510,000$18,600None
Kynam Capital Management, LP2026-06-302026-08-151,566,317$2,913,350None
DIADEMA PARTNERS LP2026-06-302026-08-15926,016$1,722,390None
Velan Capital Investment Management LP2026-06-302026-08-1545,000$83,700None
Eversept Partners, LP2026-06-302026-08-151,022,265$1,901,413None
JANE STREET GROUP, LLC2026-06-302026-08-15159,814$297,254None
JANE STREET GROUP, LLC2026-06-302026-08-15295,290$549,239None
BOOTHBAY FUND MANAGEMENT, LLC2026-06-302026-08-15948,736$1,764,649None
SPHERA FUNDS MANAGEMENT LTD.2026-06-302026-08-151,757,458$3,268,872None
Medallion Wealth Advisors, LLC2026-06-302026-08-1510$19None
Ikarian Capital, LLC2026-06-302026-08-153,425,930$6,372,230None
Verdad Advisers, LP2026-06-302026-08-1519,100$35,526None
STEMPOINT CAPITAL LP2026-06-302026-08-15431,054$801,760None
683 Capital Management, LLC2026-06-302026-08-151,393,067$2,591,104None
DAFNA Capital Management LLC2026-06-302026-08-151,530,361$2,846,471None
NANO CAP NEW MILLENNIUM GROWTH FUND L P2026-06-302026-08-1517,500$32,550None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-15161,004$299,467None
Atom Investors LP2026-06-302026-08-1513,107$24,379None
Woodline Partners LP2026-06-302026-08-153,277,143$6,095,486None
ADAGE CAPITAL PARTNERS GP, L.L.C.2026-06-302026-08-159,015,897$16,769,568None
ROYAL BANK OF CANADA2026-06-302026-08-153,000$6,000None
CITADEL ADVISORS LLC2026-06-302026-08-1534,943$64,994None
CITADEL ADVISORS LLC2026-06-302026-08-151,149,371$2,137,830None
HEIGHTS CAPITAL MANAGEMENT, INC2026-06-302026-08-152,762,430$5,138,120None
Burkehill Global Management, LP2026-06-302026-08-15176,243$327,812None
Point72 Asset Management, L.P.2026-06-302026-08-1550,652$94,213None
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.2026-06-302026-08-15620,000$1,153,000None
TWO SIGMA SECURITIES, LLC2026-06-302026-08-1516,016$29,790None
TWO SIGMA INVESTMENTS, LP2026-06-302026-08-151,138,715$2,118,010None
RAYMOND JAMES FINANCIAL INC2026-06-302026-08-15380,186$707,146None
RAYMOND JAMES FINANCIAL INC2026-06-302026-08-15190,887$355,050None
WELLS FARGO & COMPANY/MN2026-06-302026-08-154,000$7,440None
BANK OF AMERICA CORP /DE/2026-06-302026-08-1558,040$107,954None
Lynx1 Capital Management LP2026-06-302026-08-14521,413$969,828None
Steward Partners Investment Advisory, LLC2026-06-302026-08-1435,241$65,548None
UBS Group AG2026-06-302026-08-14639,243$1,188,992None
Mariner, LLC2026-06-302026-08-1420,169$37,514None
Virtu Financial LLC2026-06-302026-08-1411,626$22,000None
PLATINUM INVESTMENT MANAGEMENT LTD2026-06-302026-08-141,159,428$2,156,536None
BNP PARIBAS FINANCIAL MARKETS2026-06-302026-08-14275,631$512,674None
Affinity Asset Advisors, LLC2026-06-302026-08-145,543,936$10,311,721None
M28 Capital Management LP2026-06-302026-08-14599,793$1,115,615None
MORGAN STANLEY2026-06-302026-08-141,703,996$3,169,433None
MORGAN STANLEY2026-06-302026-08-1433,019$61,415None
MORGAN STANLEY2026-06-302026-08-1430,200$56,172None
SIMPLEX TRADING, LLC2026-06-302026-08-13271$504None

90-day public filing window, up to 50 source positions.

Palo Alto Investors LP ↗Palo Alto Investors LP ↗Palo Alto Investors LP ↗Squadron Capital Management LLC ↗ADAR1 Capital Management, LLC ↗Kynam Capital Management, LP ↗DIADEMA PARTNERS LP ↗Velan Capital Investment Management LP ↗Eversept Partners, LP ↗JANE STREET GROUP, LLC ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

No records are available for this view.

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.

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