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DYN insider trading

Dyne Therapeutics, Inc. — open-market insider buys and $1M+ sells from SEC Forms 3, 4 and 5.
Insider buys · 24 mo
9
Bought · 24 mo
$2.2M
Buys · last 90 days
2 · $78k
Most recent buy
2026-06-09

Recent insider filings

FiledInsiderTypeSharesPriceValue
2026-08-17Rhodes Jason P
Director
Sold2,586,928$25.20$65.2M
2026-07-29Kersten Dirk
Director
Sold256,072$25.50$6.5M
2026-07-08Rhodes Jason P
Director
Sold716,355$22.92$16.4M
2026-06-30Rhodes Jason P
Director
Sold463,993$21.23$9.9M
2026-06-26Rhodes Jason P
Director
Sold128,385$21.09$2.7M
2026-06-24Kersten Dirk
Director
Sold262,305$20.70$5.4M
2026-06-09Posner Brian S
Director
Bought2,000$16.94$34k
2026-06-05Posner Brian S
Director
Bought2,500$17.48$44k
2026-05-28Posner Brian S
Director
Bought2,000$18.21$36k
2026-05-22Posner Brian S
Director
Bought2,500$17.12$43k
2026-04-30Rhodes Jason P
Director
Sold178,985$18.38$3.3M
2026-04-27Rhodes Jason P
Director
Sold163,253$18.30$3.0M
2026-04-22Rhodes Jason P
Director
Sold827,099$19.75$16.3M
2026-04-21Kersten Dirk
Director
Sold337,248$20.21$6.8M
2026-04-17Kersten Dirk
Director
Sold81,840$20.27$1.7M
2026-04-01Posner Brian S
Director
Bought2,000$17.08$34k
2026-03-13Posner Brian S
Director
Bought2,000$19.35$39k
2026-03-13Kersten Dirk
Director
Sold129,672$19.52$2.5M
2026-03-11Kersten Dirk
Director
Sold679,306$19.10$13.0M
2026-03-10Posner Brian S
Director
Bought3,000$15.06$45k
2025-07-15Cox John
CEO & President
Bought100,000$9.11$911k
2024-12-10Kersten Dirk
Director
Sold136,112$29.30$4.0M
2024-12-06Kersten Dirk
Director
Sold135,039$29.39$4.0M
2024-12-04Kersten Dirk
Director
Sold79,973$29.66$2.4M
2024-10-01Kersten Dirk
Director
Sold29,007$35.47$1.0M

Showing the 25 most recent of 30 filings for DYN in the last two years. The full history, the price chart with every buy and sell marked, and daily updates are in the members browser.

Most active insider buyers

InsiderRoleBuysTotal bought
Cox JohnCEO & President2$2.0M
Posner Brian SDirector7$275k

See DYN on the chart

Every insider buy and sell for DYN plotted on the price, the full two-year history, cluster scores and daily updates — in the members area, $29/month. A free quarterly sample of the whole dataset needs no account.

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Data from the SEC EDGAR ownership filings, refreshed daily. Only open-market purchases (transaction code P) and sales of $1M or more are shown; grants, option exercises and tax withholding are excluded because they run on schedules set years earlier. Not investment advice.