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Symbol
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QSI on Nasdaq
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Investment type
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Equity / Common Stock
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Latest Disclosed Shares Owned
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19,937,500 shares
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Security Ownership %
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100%
ROTHBERG JONATHAN M. ownership in Quantum-Si Inc Common Stock (QSI)
11 Sep 2025 - ROTHBERG JONATHAN M. has filed an SCHEDULE 13D/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 19,937,500 shares of Quantum-Si Inc Common Stock (QSI).
This represents 100% ownership of the company.
In their previous filing dated 31 Dec 2024, Ph.D. Jonathan M. Rothberg had reported owning 19,937,500 shares, indicating a new holding.