John Cox - CEO & President, Director at Dyne Therapeutics, Inc.

Insider Transactions and Holdings

Entity Type: Individual
Role: CEO & President, Director
Issuer Symbol: DYN on Nasdaq
All Insider Reports: All Insider Reports

John Cox - trading volume in the past year for Dyne Therapeutics, Inc.

	Shares	%	Avg Price	Total $
Buys	+100,000	89%	$9.11	+$911,000
Sells	-12,094	11%	$15.34	-$185,467
Net	+87,906	78%		+$725,533

Holdings reported by John Cox for Dyne Therapeutics, Inc.

Security	Num Shares	Value	Price $	Transaction Date	Ownership	Underlying Class	Underlying Amount
Common Stock	374,145	$5,574,760	$14.90	05 Mar 2026	Direct
Common Stock	18,000	$288,000	$16.00	05 Mar 2026	By Trust #1
Common Stock	18,000	$288,000	$16.00	05 Mar 2026	By Trust #2
Common Stock	18,000	$288,000	$16.00	05 Mar 2026	By Trust #3
Common Stock	18,000	$288,000	$16.00	05 Mar 2026	By Trust #4
Stock option (right to buy)	285,000			12 Feb 2026	Direct	Common Stock

Transactions reported by John Cox for Dyne Therapeutics, Inc.

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

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