InsiderTrades

Form 4 for DYN Dyne Therapeutics, Inc.

Accepted 2026-03-06 00:00:00 ET · period of report 2026-03-05 · accession 0001193125-26-096512 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
T 2026-03-06 2026-03-05 DYN Cox John CEO, Pres, Dir S - Sale $14.90 -2,732 374.1K -0.7% -$40.7K

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-03-05 S D 2,732 $14.90 374,145 D — — (F2) Includes 279,895 unvested RSUs.