ARCH Venture Fund XII, L.P.

Holdings History for Prime Medicine, Inc. - COMMON STOCK (PRME)

Symbol: PRME on Nasdaq
Investment type: Equity / COMMON STOCK
Latest Disclosed Shares Owned: 18,587,036 shares
Security Ownership %: 10%

Robert Nelsen ownership in Prime Medicine, Inc. COMMON STOCK (PRME)

11 Aug 2025 - Robert Nelsen has filed an SCHEDULE 13D/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 18,587,036 shares of Prime Medicine, Inc. COMMON STOCK (PRME). This represents 10% ownership of the company. This is the first filing by ARCH Venture Fund XII, L.P. disclosing ownership of Prime Medicine, Inc. COMMON STOCK (PRME).

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filing time
Robert Nelsen	10%		$80,853,607	18,587,036			$4.35	13D/A	07 Aug 2025	11 Aug 2025, 21:48