DYN Dyne Therapeutics, Inc.
Price Chart
Executive Summary
Director John Cox filed a Form 144 notice of intent to sell 3,311 shares of Dyne Therapeutics common stock, valued at approximately $60,805 based on the filing date. This is a small, routine sale by a director, representing a negligible fraction of the company's $3.0B market cap, and is not indicative of material insider concern.
Actionable Insight
This is a routine, small-dollar insider sale by a director following RSU vesting. No material signal for traders. Monitor for any larger insider sales ahead of upcoming clinical catalysts or earnings.
Key Facts
- Director John Cox filed Form 144 to sell 3,311 shares of DYN common stock.
- Estimated sale value: ~$60,805 based on filing date.
- Shares are from restricted stock units that vested on 05/12/2026.
- Sale represents a tiny fraction of DYN's $3.0B market cap.
- Recent insider activity (30d): 9 sells totaling $5.0M, indicating some ongoing insider selling but not unusual for a biotech.
Financial Impact
~$60,805 sale by a director, immaterial relative to $3.0B market cap
Risk Factors
- Insider selling pattern may increase if more directors file 144s ahead of data readouts.
- Biotech sector risk: any negative clinical data could amplify insider selling concerns.
Market Snapshot
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 144 Filing (Primary) | 0001972481-26-000156 |
| Document: 0001972481-26-000156-index.html | 0001972481-26-000156 |
| Document: 0001972481-26-000156.txt | 0001972481-26-000156 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
|
May 20, 2026
3d ago
|
Press Release
| $17.60 awaiting T+5 | awaiting T+5 | — | $17.37 (−1.31%) |
|
May 20, 2026
3d ago
|
Press Release
| — | awaiting T+5 | — | — |
|
May 13, 2026
10d ago
|
144
| — | awaiting T+5 | — | — |
|
May 13, 2026
10d ago
|
144
| — | awaiting T+5 | — | — |
|
May 11, 2026
12d ago
|
8-K
| $18.46 $16.54 | ▼ −10.40% | ▼ −10.32% | $17.37 (−5.90%) |
|
May 6, 2026
17d ago
|
144
| $17.54 $18.44 | ▲ +5.13% | ▲ +3.63% | $17.37 (−0.97%) |
|
May 6, 2026
17d ago
|
144
| $17.54 $18.44 | ▲ +5.13% | ▲ +3.63% | $17.37 (−0.97%) |
|
May 4, 2026
19d ago
|
144
| $17.47 $18.37 | ▲ +5.15% | ▲ +3.17% | $17.37 (−0.57%) |
|
May 4, 2026
19d ago
|
144
| $17.47 $18.37 | ▲ +5.15% | ▲ +3.17% | $17.37 (−0.57%) |
|
May 4, 2026
19d ago
|
144
| $17.47 $18.37 | ▲ +5.15% | ▲ +3.17% | $17.37 (−0.57%) |
US Market Status
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