Form 4 Tracker
Dyne Therapeutics, Inc.
DYN

44 insider filings · Latest: Jun 26, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
Mar 11, 2026Mar 13 8:46 PMBrian S PosnerDirector
Purchase
2,000$19.35$38.7K13,500(D)

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Mar 11, 2026Mar 13 8:35 PMDirk KerstenDirector
Sale
129,672$19.52$2.5M4,644,386(I)

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Mar 10, 2026Mar 11 9:27 PMDirk KerstenDirector
Sale
511,098$19.57$10.0M4,774,058(I)

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Mar 9, 2026Mar 11 9:27 PMDirk KerstenDirector
Sale
177,690$17.72$3.1M5,285,156(I)

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Mar 11, 2026Mar 11 8:05 PMForDyne B.V.
Proposed Sale
807,295$19.75$15.9M

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Mar 6, 2026Mar 10 9:33 PMBrian S PosnerDirector
Purchase
3,000$15.06$45.2K11,500(D)

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Mar 9, 2026Mar 9 8:09 PMForDyne B.V.
Proposed Sale
807,295$17.72$14.3M

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Mar 5, 2026Mar 6 9:10 PMJohanna Friedl-NadererChief Commercial Officer
Sale
148$14.90$2.2K154,581(D)

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Mar 5, 2026Mar 6 9:09 PMDouglas KerrChief Medical Officer
Sale
904$14.90$13.5K171,606(D)

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Mar 5, 2026Mar 6 9:08 PMJohn CoxDirector, CEO & President
Sale
2,732$14.90$40.7K374,145(D)

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Mar 5, 2026Mar 5 9:06 PMCox John
Proposed Sale
2,732$14.90$40.7K

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Dec 5, 2025Dec 5 9:56 PMKerr Douglas
Proposed Sale
880$20.72$18.2K

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Dec 5, 2025Dec 5 9:55 PMCox John
Proposed Sale
2,662$20.72$55.1K

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Sep 5, 2025Sep 5 8:14 PMCox John
Proposed Sale
2,640$13.41$35.4K

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Sep 4, 2025Sep 4 8:45 PMKerr Douglas
Proposed Sale
4,552$13.27$60.4K

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Jun 11, 2025Jun 11 8:30 PMScalzo Richard William
Proposed Sale
1,330$14.75$19.6K

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Jun 11, 2025Jun 11 8:29 PMBeskrovnaya Oxana
Proposed Sale
2,132$14.75$31.4K

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Jun 5, 2025Jun 5 8:13 PMKerr Douglas
Proposed Sale
1,342$13.35$17.9K

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Jun 5, 2025Jun 5 8:11 PMCox John
Proposed Sale
4,060$13.35$54.2K

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Jun 5, 2025Jun 5 8:09 PMScalzo Richard William
Proposed Sale
914$13.35$12.2K

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Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
Jun 22, 2026Jun 23 8:07 PMBarry E GreeneDirector
Grant/Award
57,463$20.8757,463(D)

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Jun 5, 2026Jun 9 9:15 PMEdward HurwitzDirector
Grant/Award
35,152$17.0435,152(D)

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Jun 5, 2026Jun 9 9:13 PMDavid Charles LubnerDirector
Grant/Award
35,152$17.0435,152(D)

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Jun 5, 2026Jun 9 9:13 PMJason P RhodesDirector
Grant/Award
35,152$17.0435,152(D)

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Jun 5, 2026Jun 9 9:12 PMDirk KerstenDirector
Grant/Award
35,152$17.0435,152(D)

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Jun 5, 2026Jun 9 9:12 PMCarlo IncertiDirector
Grant/Award
35,152$17.0435,152(D)

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Jun 5, 2026Jun 9 9:09 PMCatherine Stehman-BreenDirector
Grant/Award
35,152$17.0435,152(D)

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Jun 5, 2026Jun 9 9:06 PMBrian S PosnerDirector
Grant/Award
35,152$17.0435,152(D)

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Feb 12, 2026Feb 17 10:11 PMJohn CoxDirector, CEO & President
Grant/Award
285,000$16.00285,000(D)

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Feb 12, 2026Feb 17 10:10 PMDouglas KerrChief Medical Officer
Grant/Award
130,000$16.00130,000(D)

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Feb 12, 2026Feb 17 10:09 PMJohanna Friedl-NadererChief Commercial Officer
Grant/Award
90,000$16.0090,000(D)

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Feb 12, 2026Feb 17 10:08 PMErick LuceraChief Financial Officer
Grant/Award
105,000$16.00105,000(D)

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