// company-profile
Dyne Therapeutics, Inc.
DYN// activity-summary
Recent insider activity is bullish. Over the last 30 days, 10 insiders purchased shares (net $114K). Buying was led by Posner Brian S.
// 90-day insight
Over the last 90 days, Dyne Therapeutics, Inc. insiders bought $157K across 11 transactions with no open-market sales.
- Most active insider: Rhodes Jason P with 30 transactions totaling $12.1M.
- Largest single sale: $2.2M by Rhodes Jason P on Apr 28, 2026.
- 100% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Dyne Therapeutics, Inc. as of 2026-03-31
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 18, 2026 | Kersten Dirk | DYN | Sale10b5 | 46,901 | $20.07 | $941K |
| Jun 17, 2026 | Kersten Dirk | DYN | Sale10b5 | 37,454 | $20.14 | $754K |
| Jun 16, 2026 | Kerr Douglas | DYN | Sale10b5 | 887 | $18.33 | $16K |
| Jun 16, 2026 | Friedl-Naderer Johanna | DYN | Sale10b5 | 145 | $18.33 | $3K |
| Jun 16, 2026 | Cox John | DYN | Sale10b5 | 2,683 | $18.33 | $49K |
45 more transactions hidden
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