Kerr Douglas 4
4 · Dyne Therapeutics, Inc. · Filed Mar 6, 2026
Research Summary
AI-generated summary of this filing
Dyne Therapeutics CMO Kerr Douglas Sells 904 Shares
What Happened
- Kerr Douglas, Chief Medical Officer of Dyne Therapeutics (DYN), disposed of 904 shares on 2026-03-05 at $14.90 per share for proceeds of $13,470. The sale was an automatic disposition to satisfy tax withholding tied to vesting restricted stock units, not a discretionary open-market trade.
Key Details
- Transaction date and price: 2026-03-05, 904 shares sold at $14.90 each.
- Proceeds: $13,470.
- Transaction type/codes: Sale (S); tax-withholding disposition (F) per the filing.
- Shares owned after transaction: the filing notes holdings that include 153,625 unvested RSUs (per footnote).
- Footnotes: F1 — automatic sale to satisfy tax withholding under the RSU agreement; treated as a binding contract consistent with a Rule 10b5-1 affirmative defense and not a discretionary trade. F2 — includes 153,625 unvested RSUs.
- Filing timeliness: Report filed 2026-03-06 for a 2026-03-05 transaction — filed within the standard 2-business-day window.
Context
- This sale was a routine, automatic tax-withholding transaction tied to RSU vesting and does not necessarily signal insider sentiment about the company. For retail investors, purchases typically carry more interpretive weight than automatic tax-related sales.
Insider Transaction Report
Form 4
Kerr Douglas
Chief Medical Officer
Transactions
- Sale
Common Stock
[F1][F2]2026-03-05$14.90/sh−904$13,470→ 171,606 total
Footnotes (2)
- [F1]Represents shares automatically sold by the Reporting Person to satisfy tax withholding obligations in connection with the vesting of restricted stock units granted to the Reporting Person on December 4, 2024. The automatic sale of the Reporting Person's shares is provided for in a restricted stock unit agreement constituting a "binding contract" consistent with the affirmative defense to liability under Rule 10b5-1 and the sale does not represent a discretionary trade by the Reporting Person.
- [F2]Includes 153,625 unvested RSUs.
Signature
/s/ Ron Caponigro, Attorney-in-Fact|2026-03-06