Company profile
Dyne Therapeutics, Inc. Insider Trading
DYNEvery SEC Form 4 insider trading filing for Dyne Therapeutics, Inc. (DYN) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- Nasdaq
- Sector
- Pharmaceutical Preparations
- CIK
- 0001818794
- Filings
- 227
- Insiders
- 28
- Last filing
- 2026-08-14
Activity summary
No discretionary insider buying or selling in the last 30 days. The 10 transactions filed were made under a 10b5-1 plan, scheduled in advance rather than decided on the day.
Three year balance
Buy and sell value by quarter, Q4 23 to Q3 26. Dyne Therapeutics, Inc. insiders are net sellers across the period shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $118.9M.
90 day insight
Over the last 90 days, Dyne Therapeutics, Inc. insiders bought $34K (4 transactions) and sold $166K (2 transactions).
- Most active insider: Rhodes Jason P with 31 transactions totaling $99.4M.
- Largest single sale: $34.0M by Rhodes Jason P on Aug 14, 2026.
- 96% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.
Activity skews bullish — buys outpace sales.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 14, 2026 | Rhodes Jason P | DYN | Sale10b5 | 478,377 | $25.00 | $11.96M |
| Aug 14, 2026 | Rhodes Jason P | DYN | Sale10b5 | 1,359,674 | $25.00 | $33.99M |
| Aug 14, 2026 | Rhodes Jason P | DYN | Sale10b5 | 322,465 | $25.00 | $8.06M |
| Aug 13, 2026 | Kerr Douglas | DYN | Sale10b5 | 1,556 | $26.28 | $41K |
| Aug 13, 2026 | Rhodes Jason P | DYN | Sale10b5 | 94,415 | $26.20 | $2.47M |
45 more transactions hidden
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By total value filed.
Institutional Ownership
Top 13F-HR holders of Dyne Therapeutics, Inc. as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →