ARCH Venture Fund XII, L.P. - Significant Ownership

Signature - Title
ARCH Venture Partners XII, L.P. - its General Partner
Location
Chicago, IL
Summary
This page shows a list of all the recent SCHEDULE 13D/G filings made by ARCH Venture Fund XII, L.P..

Significant Ownership of ARCH Venture Fund XII, L.P.

Sym Company Class Ownership Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
NMRA Neumora Therapeutics, Inc. Common Stock, $0.0001 par value 20.7% $61.8M 34M Kristina Burow Oct 27, 2025
PRME Prime Medicine, Inc. Common Stock, $0.00001 par value 10.4% $23.6M 18.6M Robert Nelsen Aug 7, 2025
MTSR Metsera, Inc. Common Stock, $0.00001 par value 0% $0 -$1.4B 0 -100% ARCH Venture Fund XII, L.P. Nov 13, 2025

Schedules 13D/G Reported by ARCH Venture Fund XII, L.P.:

Sym Target Class Ownership Change Current Shares Change Value Reporting name Form Report Period Date Filed
* An asterisk sign (*) next to the price indicates that the price is likely invalid.