Insider Trading & Ownership of ARCH Venture Partners IX, LLC

Location: Chicago, IL
Summary: The estimated value of insider holdings of ARCH Venture Partners IX, LLC is at least $114,602,954 dollars as of 09 Mar 2026. ARCH Venture Partners IX, LLC is the 10%+ Owner of Beam Therapeutics Inc. and owns shares of Beam Therapeutics Inc. (BEAM) stock worth about $77.93M. ARCH Venture Partners IX, LLC is the 10%+ Owner of Lyell Immunopharma, Inc. and owns shares of Lyell Immunopharma, Inc. (LYEL) stock worth about $36.53M. ARCH Venture Partners IX, LLC is the 10%+ Owner of Vir Biotechnology, Inc. and owns shares of Vir Biotechnology, Inc. (VIR) stock worth about $140.3K.
Signature: ARCH Venture Partners IX, LLC, By: /s/ Mark McDonnell, as Attorney-in-Fact for Robert Nelsen, Managing Director
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Ownership of ARCH Venture Partners IX, LLC

Symbol	Company	Relationship	Holdings Value	Past Year Net Change	Change %	Report Period
BEAM	Beam Therapeutics Inc.	10%+ Owner	$77,929,225			30 Jun 2021
LYEL	Lyell Immunopharma, Inc.	10%+ Owner	$36,533,382	+$12,499,985	+52%	06 Mar 2026
VIR	Vir Biotechnology, Inc.	10%+ Owner	$140,347			02 Sep 2022

Sym	Company	Class	Transaction	%	Value $	* Price $	Shares	Shares After	Date	Ownership

* An asterisk sign (*) next to the price indicates that the price is likely invalid.