Insider Trading & Ownership of David Shook

Location: South San Francisco, CA
Summary: The estimated net worth of David Shook is at least $939,350 dollars as of 11 Feb 2026. David Shook is the Chief Medical Officer of Lyell Immunopharma, Inc. and owns shares of Lyell Immunopharma, Inc. (LYEL) stock worth about $519.2K. David Shook is the Chief Medical Officer, Head of Research & Development of Nkarta, Inc. and owns shares of Nkarta, Inc. (NKTX) stock worth about $420.1K.
Signature: /s/ Mark Meltz, Attorney-in-Fact
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Ownership of David Shook

Symbol	Company	Relationship	Holdings Value	Past Year Net Change	Change %	Report Period
LYEL	Lyell Immunopharma, Inc.	Chief Medical Officer	$519,249			10 Feb 2026
NKTX	Nkarta, Inc.	Chief Medical Officer, Head of Research & Development	$420,101			15 Jan 2025

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.