ARCH Venture Partners IX, LLC

• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings

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Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other

Notification date	Transaction date	Company	B/S Transaction type	Nb. shares Price Value	Number of shares	Price	Value
2026-03-09	2026-03-06	Lyell Immunopharma Inc (LYEL)	B Purchase	28,439 +24.3% 167.35 US$2,481,598	28,439 +24.3%	167.35	US$2,481,598
2019-10-18	2019-10-16	Vir Biotechnology Inc (VIR)	B Purchase	95,943 -28.1% 338.35 US$4,831,544	95,943 -28.1%	338.35	US$4,831,544
2019-07-02	2019-07-02	Karuna Therapeutics Inc (KRTX)	B Purchase	4,938 +40.7% 371.42 US$3,934,983	4,938 +40.7%	371.42	US$3,934,983
2019-07-02	2019-07-02	Karuna Therapeutics Inc (KRTX)	B Purchase	100,000 +inf% 16.00 US$1,600,000	100,000 +inf%	16.00	US$1,600,000