ARCH Venture Partners IX, LLC (CIK 0001723174)

Latest company ownership

Shares held
2,343,750
Last filed at
Feb 10, 2021
Confidence Score
50.0
2025Q4
Confidence Score History
2024Q1 2025Q4
Role: 10% Owner
Shares held
366,301
Last filed at
Apr 4, 2024
Confidence Score
50.0
2025Q4
Confidence Score History
2024Q2 2025Q4
Shares held
61,160
Last filed at
Sep 7, 2022
Confidence Score
50.0
2025Q4
Confidence Score History
2019Q4 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Apr 2, 2024 Apr 4, 2024 Boundless Bio, Inc. 10% Owner Buy 100.0 +200,000 12.01% $3.2M
Feb 8, 2024 Feb 12, 2024 Sana Biotechnology, Inc. 10% Owner Buy 96.3 +1,818,181 5.39% $10M
Oct 16, 2019 Oct 18, 2019 Vir Biotechnology, Inc. 10% Owner Buy 100.0 +1,000,000 100.00% $20M