ARCH Venture Fund XII, L.P.

13F Holdings History for Prime Medicine, Inc. - COMMON STOCK (PRME)

Symbol: PRME on Nasdaq
Investment type: Equity / COMMON STOCK
Latest Disclosed Ownership: 18.6M shares
Security Ownership: 10.4%

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

2025-08-11 - Robert Nelsen has filed an SCHEDULE 13D/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 18.6M shares of Prime Medicine, Inc. COMMON STOCK (PRME). This represents 10.4% percent ownership of the company.

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filed at
Robert Nelsen	10.4%		$23.6M	18.6M			$1.27	13D/A	8/7/2025	11 Aug 2025 21:48:39