Cox John insider trades
Cox John has filed 18 Form 4s with the SEC that we hold, for Dyne Therapeutics, Inc. (DYN) (CEO & President, Director) and SGTX (Director). Across all of them we count 3 purchases worth $1.2M and 9 sales worth $581.3K reported on Form 4. In the last 12 months: 0 purchases ($0) and 6 sales ($443.7K). The largest single trade was a purchase of 100,000 shares of Dyne Therapeutics, Inc. worth $911.0K, dated 2025-07-14. Of 1 sale filed since we began reading the 10b5-1 checkbox, 1 (100%) was marked as made under a 10b5-1 trading plan. The first filing on our record is dated 2022-05-27 and the latest 2026-09-08.
Dyne Therapeutics, Inc. (DYN)
| Trade date | Code | Shares | Value as filed | Filed | Source |
|---|---|---|---|---|---|
| 2024-09-04 | P, purchase reported on Form 4 | 7,200 | $238.2K | 2024-09-04 | SEC |
| 2024-09-04 | P, purchase reported on Form 4 | 800 | $26.1K | 2024-09-04 | SEC |
| 2025-03-05 | S, sale reported on Form 4 | 4,061 | $48.0K | 2025-03-07 | SEC |
| 2025-06-05 | S, sale reported on Form 4 | 4,060 | $54.2K | 2025-06-06 | SEC |
| 2025-07-14 | P, purchase reported on Form 4 | 100,000 | $911.0K | 2025-07-15 | SEC |
| 2025-09-05 | S, sale reported on Form 4 | 2,640 | $35.4K | 2025-09-09 | SEC |
| 2025-12-05 | S, sale reported on Form 4 | 2,662 | $55.2K | 2025-12-05 | SEC |
| 2026-03-05 | S, sale reported on Form 4 | 2,732 | $40.7K | 2026-03-06 | SEC |
| 2026-05-13 | S, sale reported on Form 4 | 3,311 | $60.8K | 2026-05-14 | SEC |
| 2026-06-16 | S, sale reported on Form 4 | 2,683 | $49.2K | 2026-06-17 | SEC |
| 2026-08-13 | S, sale reported on Form 4 | 4,986 | $131.0K | 2026-08-17 | SEC |
| 2026-09-08 | S, sale reported on Form 4 | 5,658 | $106.8K | 2026-09-08 | SEC |
SGTX
No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.
Counted from the Form 4 filings this reporting owner (SEC CIK 1498428) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
