Insiders / Cox John
Cox John
CIK 1498428personinsider
Companies
1
First seen
Feb 17, 2026
Last activity
Mar 6, 2026
Companies
| Company | Shares held | Latest |
|---|---|---|
| Dyne Therapeutics, Inc. · DYN | 374,145 | — |
All securities held
2 positions · latest reported per filing
| Company | Security | Shares |
|---|---|---|
| Dyne Therapeutics, Inc. | Common Stock | 374,145 |
| Dyne Therapeutics, Inc. | Stock option (right to buy)Derivative | 285,000 |
Activity
InsidersInstitutions
This person's insider trades (Form 4), across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Mar 5, 2026 | Sell | DYN Dyne Therapeutics, Inc. Common Stock | $40.7K | -3K -0.72% | 374,145 0.20% of shares | low |
| Feb 12, 2026 | Grant | DYN Dyne Therapeutics, Inc. Common Stock | $0 | +180K +91.43% | 376,877 0.20% of shares | low |
| Feb 12, 2026 | Grant | DYN Dyne Therapeutics, Inc. Stock option (right to buy) | — | +285K | 285,000 0.15% of shares | low |