Insider Trading & Ownership of Jonathan McNeill

Location: Waltham, MA
Summary: The estimated net worth of Jonathan McNeill is at least $8.49M dollars as of 17 Dec 2025. Jonathan McNeill is the Chief Business Officer of Dyne Therapeutics, Inc. and owns shares of Dyne Therapeutics, Inc. (DYN) stock worth about $6.08M. Jonathan McNeill is the President and COO of CRESCENT BIOPHARMA, INC. and owns shares of GLYCOMIMETICS INC (GLYC) stock worth about $2.41M.
Signature: /s/ Barbara Bispham, as attorney-in-fact for Jonathan McNeill
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Ownership of Jonathan McNeill

Symbol	Company	Relationship	Holdings Value	Past Year Net Change	Change %	Report Period
DYN	Dyne Therapeutics, Inc.	Chief Business Officer	$6.08M			19 Aug 2024
GLYC	GLYCOMIMETICS INC	President and COO	$2.41M			15 Dec 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.