ARCH Venture Fund IX, L.P.

10% owner at Boundless Bio, Inc. · on record since Mar 27, 2024
10% owner at Lyell Immunopharma, Inc. · on record since Jun 23, 2021
10% owner at Gossamer Bio, Inc. · on record since Feb 12, 2019
10% owner at Karuna Therapeutics, Inc. · on record since Jun 27, 2019
10% owner at Beam Therapeutics Inc. · on record since Feb 11, 2020
10% owner at Sana Biotechnology, Inc. · on record since Feb 10, 2021
10% owner at Vir Biotechnology, Inc. · on record since Oct 18, 2019

Insider trading activity of ARCH Venture Fund IX, L.P.

Transactions on record: 38; since Apr 2, 2021

Open-market buys: 0

Open-market sells: 1; $39.8K

Companies traded: 4; last filing Jul 6, 2026

Figures computed from official regulatory filings — .

Companies where ARCH Venture Fund IX, L.P. has traded

Boundless Bio, Inc.3 tx · $56.3K · Jul 6, 2026
Vir Biotechnology, Inc.25 tx · Aug 26, 2022
Lyell Immunopharma, Inc.6 tx · Jun 23, 2021
Beam Therapeutics Inc.4 tx · Apr 2, 2021

Track record of ARCH Venture Fund IX, L.P.

Insufficient history for a statistical track record (fewer than 5 open-market buys).

Transaction history of ARCH Venture Fund IX, L.P.

Co-insiders of ARCH Venture Fund IX, L.P.

ARCH Venture Partners IX, LLCBeam Therapeutics Inc. +6

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Src
Boundless Bio, Inc.	Jul 6, 2026	Sell	-16,000	2.49 USD	$39.8K	SEC
Boundless Bio, Inc.	Jul 6, 2026	Exercise	16,000	1.03 USD	$16.5K	SEC
Boundless Bio, Inc.	Jul 6, 2026	ExerciseD (derivative)	-16,000	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 26, 2022	Other	1,475	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 26, 2022	Other	13,076	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 26, 2022	Other	2,952	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 26, 2022	Other	-217,781	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 26, 2022	Other	2,952	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 26, 2022	Other	-282,219	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 26, 2022	Other	1,475	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 26, 2022	Other	13,076	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 26, 2022	Other	-217,781	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 26, 2022	Other	-282,219	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	-217,781	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	2,952	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	2,952	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	-282,219	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	-282,219	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	1,475	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	2,952	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	13,076	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	13,076	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	1,475	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	-217,781	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	-217,781	0.00 USD	—	SEC

Company	Filed	Type	Qty	Price	Value · USD	Src
Boundless Bio, Inc.	Jul 6, 2026	Sell	-16,000	2.49 USD	$39.8K	SEC
Boundless Bio, Inc.	Jul 6, 2026	Exercise	16,000	1.03 USD	$16.5K	SEC
Boundless Bio, Inc.	Jul 6, 2026	ExerciseD (derivative)	-16,000	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 26, 2022	Other	1,475	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 26, 2022	Other	13,076	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 26, 2022	Other	2,952	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 26, 2022	Other	-217,781	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 26, 2022	Other	2,952	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 26, 2022	Other	-282,219	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 26, 2022	Other	1,475	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 26, 2022	Other	13,076	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 26, 2022	Other	-217,781	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 26, 2022	Other	-282,219	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	-217,781	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	2,952	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	2,952	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	-282,219	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	-282,219	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	1,475	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	2,952	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	13,076	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	13,076	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	1,475	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	-217,781	0.00 USD	—	SEC
Vir Biotechnology, Inc.	Aug 16, 2022	Other	-217,781	0.00 USD	—	SEC