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Cox John
InsiderCIK 0001498428
Total Volume
$3.1M
7 filings
Purchases
$911.0K
1 buy txns
Sales
$377.6K
5 sell txns
Net Activity
$533.4K
net bought
Profile
- Filings
- 7
- Buy transactions
- 1
- Sell transactions
- 5
- Companies
- 1
- Active
- 2025–2026
Cox John accounts for 7 disclosed filings worth $3.1M, all concentrated in Dyne Therapeutics, Inc. (DYN), active 2025–2026. The record is net buying, with $911.0K in purchases against $377.6K in sales. The largest single open-market purchase on record is $911.0K in Dyne Therapeutics, Inc.. Data is sourced from official SEC Form 3, 4, and 5 filings.
Associated Companies
Trading History
7 loaded
| Sep 8 | DYN Dyne Therapeutics, Inc. | Cox John | Insider | Sell | $106.8K |
| Aug 17 | DYN Dyne Therapeutics, Inc. | Cox John | Insider | Sell | $131.0K |
| Jun 17 | DYN Dyne Therapeutics, Inc. | Cox John | Insider | Sell | $49.2K |
| Dec 5 | DYN Dyne Therapeutics, Inc. | Cox John | Insider | Sell | $55.2K |
| Sep 9 | DYN Dyne Therapeutics, Inc. | Cox John | Insider | Sell | $35.4K |
| Jul 18 | DYN Dyne Therapeutics, Inc. | Cox John | Insider | Award | $1.8M |
| Jul 15 | DYN Dyne Therapeutics, Inc. | Cox John | Insider | Buy | $911.0K |
7 filings