ARCH Venture Fund XII, L.P. (CIK 0001906837)

Latest company ownership

Shares held
27,800,931
Last filed at
Oct 29, 2025
Confidence Score
83.8
2025Q4
Confidence Score History
2023Q3 2025Q4
MTSR - Metsera, Inc.
Role: 10% Owner
Shares held
1,139,951
Last filed at
Feb 3, 2025
Confidence Score
50.6
2025Q4
Confidence Score History
2025Q1 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Oct 27, 2025 Oct 29, 2025 Neumora Therapeutics, Inc. 10% Owner Buy 95.0 +1,915,700 6.00% ✗ $5M
Aug 1, 2025 Aug 1, 2025 Prime Medicine, Inc. 10% Owner Buy 100.0 +3,030,300 19.61% ✗ $10M
Feb 3, 2025 Feb 3, 2025 Metsera, Inc. 10% Owner Buy 97.5 +2,222,222 9.04% ✗ $40M
Feb 15, 2024 Feb 20, 2024 Prime Medicine, Inc. 10% Owner Buy 100.0 +3,200,000 26.11% ✗ $20M
Nov 13, 2023 Nov 15, 2023 Neumora Therapeutics, Inc. 10% Owner Buy 75.0 +35,010 0.85% ✗ $412.1K
Nov 8, 2023 Nov 13, 2023 Neumora Therapeutics, Inc. 10% Owner Buy 92.5 +140,605 3.55% ✗ $1.5M
Nov 3, 2023 Nov 7, 2023 Neumora Therapeutics, Inc. 10% Owner Buy 87.5 +95,694 2.48% ✗ $1.1M
Sep 28, 2023 Sep 29, 2023 Neumora Therapeutics, Inc. 10% Owner Buy 87.5 +76,511 2.02% ✗ $1M
Sep 26, 2023 Sep 27, 2023 Neumora Therapeutics, Inc. 10% Owner Buy 85.0 +58,504 1.57% ✗ $700.5K
Sep 22, 2023 Sep 25, 2023 Neumora Therapeutics, Inc. 10% Owner Buy 92.5 +100,740 2.78% ✗ $1.1M
Sep 19, 2023 Sep 20, 2023 Neumora Therapeutics, Inc. 10% Owner Buy 100.0 +1,500,000 70.62% ✗ $25.5M