Gerardus Johannes Platenburg - 18 Mar 2026 Form 3 Insider Report for ProQR Therapeutics N.V. (PRQR)

Reporting relationship: Chief Scientific Officer, Director
Issuer ticker: PRQR
Reported as of: 18 Mar 2026
Net transaction value: $0
SEC form: 3
Accepted by SEC: 18 Mar 2026, 16:08:11 UTC
Source filing: View source filing
Reporting owner signature: /s/ Pieter Erik de Ridders, Attorney-in-Fact

Key filing fact

Gerardus Johannes Platenburg filed Form 3 for ProQR Therapeutics N.V. (PRQR) on 18 Mar 2026.

Key facts

This page summarizes Gerardus Johannes Platenburg's Form 3 filing for ProQR Therapeutics N.V. (PRQR).
0 reported transactions and 11 derivative rows are listed below.
Accepted by SEC: 18 Mar 2026, 16:08.

Change

No earlier filing in this sequence is available for direct comparison.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Official SEC source

Ownership activity is grounded in SEC Form 3 disclosures.

View source filing

Reporting Owners (1)

CIK 0002115507 Primary reporting owner

Platenburg Gerardus Johannes

Relationship: Chief Scientific Officer, Director
Address: PROQR THERAPEUTICS N.V., ZERNIKEDREEF 9, LEIDEN, NETHERLANDS
Signature: /s/ Pieter Erik de Ridders, Attorney-in-Fact
Signature date: 18 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

PRQR holding

Ordinary Shares

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 824,388
Date: 18 Mar 2026
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

PRQR holding Derivative

Share Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 18 Mar 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 61,453
Exercise price: $4.90
Footnotes: F1

PRQR holding Derivative

Share Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 18 Mar 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 71,409
Exercise price: $3.30
Footnotes: F1

PRQR holding Derivative

Share Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 18 Mar 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 17,878
Exercise price: $15.78
Footnotes: F1

PRQR holding Derivative

Share Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 18 Mar 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 141,369
Exercise price: $9.91
Footnotes: F1

PRQR holding Derivative

Share Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 18 Mar 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 79,033
Exercise price: $4.20
Footnotes: F1

PRQR holding Derivative

Share Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 18 Mar 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 77,353
Exercise price: $1.02
Footnotes: F1

PRQR holding Derivative

Share Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 18 Mar 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 172,603
Exercise price: $0.6700
Footnotes: F1

PRQR holding Derivative

Share Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 18 Mar 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 152,000
Exercise price: $3.41
Footnotes: F2

PRQR holding Derivative

Share Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 18 Mar 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 164,715
Exercise price: $1.98
Footnotes: F3

PRQR holding Derivative

Share Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 18 Mar 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 159,358
Exercise price: $2.65
Footnotes: F4

PRQR holding Derivative

Share Option (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 18 Mar 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 186,139
Exercise price: $2.02
Footnotes: F5

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 5 footnotes

Footnote F1

Fully vested.

Footnote F2

25% of the shares subject to such option vest and become exercisable on January 1, 2024, and the remaining 75% vest in 12 substantially equal quarterly installments thereafter, subject to the Reporting Person's continuous service to the Issuer on each such date.

Footnote F3

25% of the shares subject to such option vest and become exercisable on January 1, 2025, and the remaining 75% vest in 12 substantially equal quarterly installments thereafter, subject to the Reporting Person's continuous service to the Issuer on each such date.

Footnote F4

25% of the shares subject to such option vest and become exercisable on January 1, 2026, and the remaining 75% vest in 12 substantially equal quarterly installments thereafter, subject to the Reporting Person's continuous service to the Issuer on each such date.

Footnote F5

25% of the shares subject to such option vest and become exercisable on January 1, 2027, and the remaining 75% vest in 12 substantially equal quarterly installments thereafter, subject to the Reporting Person's continuous service to the Issuer on each such date.

SEC remarks

Exhibit 24 - Power of Attorney

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