Ownership

John Cox - Insider Trading & Ownership

Entity: Individual
Location: C/O Bioverativ Inc., 225 Second Avenue, Waltham, MA
Summary: The estimated net worth of John Cox is at least $2.11M dollars as of March 7, 2025. John Cox is the CEO & President, Director of Dyne Therapeutics, Inc. and owns shares of Dyne Therapeutics, Inc. (DYN) stock worth about $2.11M.
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Ownership of John Cox

Symbol	Company	Relationship	Holdings Value	Past Year Net Change	Change %	Report Period
DYN	Dyne Therapeutics, Inc.	CEO & President, Director	$2.11M	+$1.01M	+91.8%	Mar 5, 2025
SGTX	Sigilon Therapeutics, Inc.	Director				Aug 11, 2023

Insider Transactions Reported by John Cox:

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.