John Cox's Net Worth
John Cox's net worth is estimated to be at least $10,501,803.63 as of 08/17/2025. CoreStreet's estimation of John Cox's net worth is based on their sale of stock and current holding of stock.
John Cox is CEO at Dyne Therapeutics Inc. They have executed at least 6 trades of stock as per SEC Form 4 filings. Their most recent trade was for 100,000 units of DYN stock on 07/14/2025. Their biggest sale was on 03/25/2015 when they sold 12,010 units of Biogen Inc stock for $5,393,210.60. They typically trade 1 times per year.
Total value of insider buys:
- $1,968,280.00
Total value of insider sells:
- $8,533,523.63
Most recent insider trade:
- July 14, 2025
John Cox's Insider Trading History
| Dyne Therapeutics Inc | Title | Amount | Price | Type | Total Value |
|---|---|---|---|---|---|
July 14, 2025 | CEO | 100,000 | $9.11 | Buy | $911,000.00 |
Sept. 4, 2024 | CEO | 32,000 | $33.04 | Buy | $1,057,280.00 |
| Repligen Corporation | Title | Amount | Price | Type | Total Value |
|---|---|---|---|---|---|
March 24, 2020 | Director | 1,858 | $96.72 | Sell | $179,705.76 |
March 18, 2020 | Director | 26,736 | $95.27 | Sell | $2,547,138.72 |
Feb. 24, 2020 | Director | 4,455 | $92.81 | Sell | $413,468.55 |
| Biogen Inc | Title | Amount | Price | Type | Total Value |
|---|---|---|---|---|---|
March 25, 2015 | EVP | 12,010 | $449.06 | Sell | $5,393,210.60 |