Form 4 Tracker
Dyne Therapeutics, Inc.
DYN

25 insider filings · Latest: May 13, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
May 13, 2026May 14 8:05 PMJohanna Friedl-NadererChief Commercial Officer
Sale
228$18.36$4.2K154,353(D)

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May 13, 2026May 14 8:04 PMDouglas KerrChief Medical Officer
Sale
1,564$18.36$28.7K170,042(D)

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May 13, 2026May 14 8:03 PMErick LuceraChief Financial Officer
Sale
1,448$18.36$26.6K123,925(D)

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May 13, 2026May 14 8:02 PMJohn CoxDirector, CEO & President
Sale
3,311$18.36$60.8K370,834(D)

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May 13, 2026May 13 8:57 PMCox John
Proposed Sale
3,311$18.36$60.8K

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May 13, 2026May 13 8:55 PMLucera Erick
Proposed Sale
1,448$18.36$26.6K

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May 6, 2026May 6 9:09 PMJason P RhodesDirector
Sale
83,219$18.18$1.5M1,136,810(I)

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May 5, 2026May 6 9:09 PMJason P RhodesDirector
Sale
11,600$18.03$209.1K1,154,054(I)

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May 4, 2026May 6 9:09 PMJason P RhodesDirector
Sale
11,904$18.00$214.3K1,156,457(I)

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May 6, 2026May 6 8:43 PMAtlas Venture Fund XI, LP
Proposed Sale
43,621$17.47$762.1K

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May 6, 2026May 6 8:43 PMAtlas Venture Opportunity Fund II, LP
Proposed Sale
21,926$17.47$383.0K

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May 6, 2026May 6 8:42 PMAtlas Venture Associates XI, LP
Proposed Sale
428$17.47$7.5K

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May 6, 2026May 6 8:42 PMAtlas Venture Opportunity Fund I, LP
Proposed Sale
17,244$17.47$301.3K

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May 5, 2026May 5 8:39 PMAtlas Venture Fund XI, LP
Proposed Sale
6,081$17.71$107.7K

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May 5, 2026May 5 8:37 PMAtlas Venture Opportunity Fund II, LP
Proposed Sale
3,056$17.71$54.1K

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May 5, 2026May 5 8:36 PMAtlas Venture Associates XI, LP
Proposed Sale
60$17.71$1.1K

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May 5, 2026May 5 8:36 PMAtlas Venture Opportunity Fund I, LP
Proposed Sale
2,403$17.71$42.6K

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May 4, 2026May 4 9:00 PMAtlas Venture Opportunity Fund I, LP
Proposed Sale
2,466$17.39$42.9K

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May 4, 2026May 4 8:59 PMAtlas Venture Fund XI, LP
Proposed Sale
6,241$17.39$108.5K

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May 4, 2026May 4 8:59 PMAtlas Venture Opportunity Fund II, LP
Proposed Sale
3,136$17.39$54.5K

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Page 1 of 6

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Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
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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