Van Herk group reports 10.9% ProQR (PRQR) ownership after share issuances
Rhea-AI Filing Summary
ProQR Therapeutics N.V. received an updated ownership filing from Dutch investor Adrianus van Herk and affiliated entities. They report beneficial ownership of 15,384,250 ordinary shares, or about 10.9% of ProQR’s ordinary shares outstanding as of June 26, 2026.
The percentage change is due solely to an increase in ProQR’s total shares outstanding following issuances described in a recent Prospectus Supplement, not from new share purchases or sales by the Van Herk group. The group retains sole or shared voting and dispositive power over the same share amount, and reports no transactions in the past 60 days.
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Key Figures
Beneficial ownership: 15,384,250 ordinary shares
Ownership percentage: 10.9%
Shares outstanding baseline: 141,119,032 ordinary shares
+4 more
7 metrics
Beneficial ownership
15,384,250 ordinary shares
Aggregate shares held by reporting persons
Ownership percentage
10.9%
Portion of ProQR ordinary shares outstanding as of June 26, 2026
Shares outstanding baseline
141,119,032 ordinary shares
ProQR shares expected outstanding as of June 26, 2026
Sole voting power (VHI)
15,384,250 shares
Ordinary shares over which Van Herk Investments B.V. has sole voting power
Shared voting power (affiliates)
15,384,250 shares
Ordinary shares with shared voting power among affiliated entities
Amendment number
Amendment No. 6
Sixth amendment to the original Schedule 13D
Event date
June 26, 2026
Date of event requiring the amended statement
Key Terms
beneficial ownership, Schedule 13D, Prospectus Supplement, sole voting power, +2 more
6 terms
beneficial ownership financial
"The Reporting Persons hold an aggregate 15,384,250 ordinary shares... representing approximately 10.9% of the ordinary shares outstanding"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
Schedule 13D regulatory
"This /A (this "Amendment No. 6") amends the filed on May 28, 2025..."
A Schedule 13D is a legal document that investors file with regulators when they buy a large enough stake in a company to potentially influence its management or decisions. It provides details about the investor’s intention, ownership stake, and plans, helping other investors understand who is gaining control and what their motives might be.
Prospectus Supplement regulatory
"as described in the Issuer's Prospectus Supplement dated June 25, 2026 and filed with the SEC pursuant to Rule 424(b)(5)"
A prospectus supplement is an additional document provided alongside a company's main offering details, offering updated or extra information about a specific financial product being sold. It helps investors understand the latest terms, risks, and details of the investment, similar to how an update or revision clarifies or expands on original instructions, ensuring they have current and complete information before making a decision.
sole voting power financial
"Number of Shares Beneficially Owned by Each Reporting Person With: | 7 | Sole Voting Power 15,384,250.00"
Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.
AI-generated analysis. How Rhea-AI works. Not financial advice.
FAQ
What percentage of ProQR (PRQR) is owned by the Van Herk group?
The Van Herk group holds approximately 10.9% of ProQR’s ordinary shares. This percentage is calculated based on 141,119,032 ordinary shares expected to be outstanding as of June 26, 2026, after share issuances described in a Prospectus Supplement.
Why did the Van Herk group’s ProQR (PRQR) ownership percentage change?
The ownership percentage changed solely because ProQR’s outstanding share count increased following issuances described in a Prospectus Supplement. The Van Herk group’s share count remained at 15,384,250; only the denominator used for the percentage changed.
Who are the reporting entities in the ProQR (PRQR) Schedule 13D/A?
Reporting persons include Van Herk Investments B.V., several affiliated Dutch companies, foundations Penulata and Abchrys, and Adrianus van Herk. The structure reflects layered ownership and management entities through which the ProQR stake is held and controlled.