John G. Cox owns 0.23% of Dyne Therapeutics
429,507 shares as of the September 8, 2026 filing, worth $6.1M at the latest close.
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Free.
The stake
0.23%
worth $6.1M at the latest close
Stake rank
#2,018
by dollar value of the stake
Last sale
41 days ago
Sep 8, 2026
Last buy
462 days ago
Jul 14, 2025 · $911,000
John G. Cox owns 0.23% of Dyne Therapeutics, Inc.: 429,507 of 186,746,431 shares, worth about $6.1M at the 2026-10-16 close. The stake has moved from 0.01% in 2024 to 0.23% on 2026-09-08, across 9 sales and 2 purchases that moved it since 2016. The last trade that moved it was a planned sale of $106,823 on 2026-09-08.
How the stake is held
as of the Sep 8, 2026 filing
SHARES
OF THE STAKE
COMMON STOCK · stated Sep 8, 2026 · Form 4 ↗
HELD DIRECTLY
357,507
83.2%
HELD INDIRECTLY · 4 VEHICLES
72,000
16.8%
By Trust #1
18,000
4.2%
By Trust #2
18,000
4.2%
By Trust #3
18,000
4.2%
By Trust #4
18,000
4.2%
THE STAKE
429,507
0.23%