This is a trivial insider sale proposal by a venture affiliate; the dollar amount is immaterial. No immediate action warranted. Monitor for any large-scale insider selling patterns, but this single filing is not a signal of deterioration.
Price Chart
Executive Summary
Atlas Venture Opportunity Fund I, L.P., a venture capital affiliate, filed a Form 144 indicating intent to sell 5,019 shares of Dyne Therapeutics (DYN) common stock, with an estimated value of approximately $102,036. The shares were acquired via private placement in August 2020. The proposed sale is negligible relative to DYN's $3.6B market cap and appears routine portfolio management by a significant early investor.
Key Facts
- Reporting owner: Atlas Venture Opportunity Fund I, L.P.
- Proposed sale: 5,019 shares of DYN common stock
- Estimated market value: $102,036.27 as of June 25, 2026
- Shares acquired via private placement on August 7, 2020
- Broker: Merrill Lynch
- Filing date: June 25, 2026
Financial Impact
Proposed sale of 5,019 shares ($102,036.27) — negligible relative to DYN's $3.6B market cap
Risk Factors
- Sale may be executed, but volume is too small to affect stock price or liquidity
- No risk of material dilution or insider sentiment shift from this filing alone
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 144 Filing (Primary) | 0001628280-26-045612 |
| Document: 0001628280-26-045612-index.html | 0001628280-26-045612 |
| Document: 0001628280-26-045612.txt | 0001628280-26-045612 |
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
Subscribe to SecBot
Get Real-Time SEC Filing Intelligence
Comprehensive SEC filing analysis delivered the moment filings hit EDGAR. Sentiment scoring, impact analysis, and actionable insights for every material event.
Try SecBot Free Coming soon: SecBot Pro with alerts, watchlists, and API access