Monitor for a subsequent Form 4 or updated Form 144 to confirm whether the sale was executed. Given the small share quantity and institutional seller, this is a low-impact event unlikely to move the stock materially.
Price Chart
Executive Summary
Atlas Venture Associates XI, L.P., a shareholder of Dyne Therapeutics, filed a Form 144 notifying intent to sell up to 1,401 shares of common stock. The filing is a routine notice of potential sale and does not confirm the transaction has occurred.
Key Facts
- Reporting entity: Atlas Venture Associates XI, L.P.
- Subject company: Dyne Therapeutics, Inc. (DYN)
- Security type: Common stock
- Number of shares proposed for sale: 1,401
- Filing date: April 20, 2026
- Method of sale: Not specified
- Shares acquired via private placement on April 26, 2019
Financial Impact
Approximately $285,944 (based on 1,401 shares at ~$204/share, derived from $3.4B market cap and ~16.5M shares outstanding)
Risk Factors
- Potential perception of negative sentiment if multiple insiders file near-simultaneous 144s
- Execution of sale could contribute to near-term supply pressure, though minimal given size
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 144 Filing (Primary) | 0001628280-26-026021 |
| Document: 0001628280-26-026021-index.html | 0001628280-26-026021 |
| Document: 0001628280-26-026021.txt | 0001628280-26-026021 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 17, 2026 6w ago | Insider Cluster | $26.15 $17.90 | ▲ +31.55% | ▲ +29.57% | $15.20 (+41.87%) |
Aug 14, 2026 6w ago | 144 | $26.15 $18.52 | ▼ −29.18% | ▼ −27.65% | $15.20 (−41.87%) |
Aug 13, 2026 7w ago | 144 | $25.70 $18.52 | ▲ +27.94% | ▲ +25.95% | $15.20 (+40.86%) |
Aug 13, 2026 7w ago | 144 | $25.70 $18.52 | ▼ −27.94% | ▼ −25.95% | $15.20 (−40.86%) |
Aug 13, 2026 7w ago | 144 | $25.70 $18.52 | ▼ −27.94% | ▼ −25.95% | $15.20 (−40.86%) |
Jul 29, 2026 9w ago | Press Release | $25.73 $26.09 | ▲ +1.40% | ▼ −2.57% | $15.20 (−40.92%) |
Jul 22, 2026 10w ago | Press Release | $23.21 $26.78 | ▼ −15.38% | ▼ −12.48% | $15.20 (+34.51%) |
Jul 20, 2026 10w ago | 8-K | $23.45 $26.15 | ▲ +11.51% | ▲ +7.39% | $15.20 (−35.18%) |
Jun 30, 2026 13w ago | Insider Cluster | $21.79 $25.10 | ▲ +15.19% | ▲ +17.38% | $15.20 (−30.24%) |
Jun 29, 2026 13w ago | 144 | $22.21 $25.63 | ▼ −15.40% | ▼ −16.43% | $15.20 (+31.56%) |
US Market Status
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