Senior insider sale
CEO & President at DYNE THERAPEUTICS, INC. — senior position signals high conviction
$287.1K
13.33K shares
What this filing means
COX JOHN plans to sell 13.33K shares of DYNE THERAPEUTICS, INC. valued at approximately $287.1K. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.
Filed: 9/8/2026ACC: 0001972481-26-000280
DirectorOfficer· CEO & President
Since Mar 2026
13.33K
Shares to sell
$287.1K
Approx. market value
9.08K
Acquired (3 months)
1
Planned
2 completed
Securities Acquired — Last 3 Months1
Restricted Stock Units
Equity Compensation
9/4/2026
9.08KTotal acquired9.08K
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
9/4/2026 | Restricted Stock Units Equity Compensation | 9.08K | — |
| Total | 9.08K | ||
Planned & Completed Dispositions3
Completed
—Completed
Units to sell
4.99K
Market value
$131.0K
8/13/2026
—Completed
Units to sell
2.68K
Market value
$49.2K
6/16/2026
Planned — Approximate Date
NasdaqPlanned
Units to sell
5.66K
Market value
$106.8K
9/8/2026
Total
Units
13.33K
Value
$287.1K
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
| Completed | ||||
8/13/2026 | 4.99K | $131.0K | — | Completed |
6/16/2026 | 2.68K | $49.2K | — | Completed |
| Planned — Approximate Date | ||||
9/8/2026 | 5.66K | $106.8K | Nasdaq | Planned |
| Total | 13.33K | $287.1K | ||