DYN insider transaction filings
Dyne Therapeutics, Inc. — 50 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-09-08. Screen DYN transaction legs live →
Insider transaction summary — last 90 days
2026-06-24 to 2026-09-22, from the filings listed below: 14 Form 4 filings. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 46 legs across 14 filings by 6 insiders — 4,684,961 shares, $112,058,792 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 0.
- Largest priced transaction: sale of 1,359,674 shares @ $25.00 ($33,991,850) by Rhodes Jason P, filed 2026-08-17.
By insider — same window
Open-market purchase/sale legs on non-derivative securities, grouped by the filing's reporting owner(s); joint filings appear once. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Insider | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|
| Rhodes Jason P — Director | 4 | — | 31 legs · 4,136,834 sh · $99,402,433 | — |
| Kersten Dirk — Director | 2 | — | 5 legs · 525,422 sh · $12,135,381 | — |
| Cox John — CEO & President, Director | 2 | — | 2 legs · 10,644 sh · $237,855 | — |
| Kerr Douglas — Chief Medical Officer | 2 | — | 3 legs · 6,591 sh · $156,438 | — |
| Lucera Erick — Chief Financial Officer | 2 | — | 2 legs · 4,159 sh · $95,339 | — |
| Friedl-Naderer Johanna — Chief Commercial Officer | 2 | — | 3 legs · 1,311 sh · $31,347 | — |
Recent Form 4 filings — Dyne Therapeutics, Inc.
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-08 | 4 | Cox John — CEO & President, Director | Sale (S): 5,658 @ $18.88 | EDGAR |
| 2026-09-08 | 4 | Kerr Douglas — Chief Medical Officer | Sale (S): 3,745 @ $24.35 · Sale (S): 1,290 @ $18.88 | EDGAR |
| 2026-09-08 | 4 | Friedl-Naderer Johanna — Chief Commercial Officer | Sale (S): 900 @ $24.35 · Sale (S): 185 @ $18.88 | EDGAR |
| 2026-08-17 | 4 | Rhodes Jason P — Director | Sale (S): 268,354 @ $26.20 · Sale (S): 94,415 @ $26.20 · Sale (S): 63,643 @ $26.20 · Sale (S): 1,359,674 @ $25 · Sale (S): 478,377 @ $25 · Sale (S): 322,465 @ $25 | EDGAR |
| 2026-08-17 | 4 | Friedl-Naderer Johanna — Chief Commercial Officer | Sale (S): 226 @ $26.28 | EDGAR |
| 2026-08-17 | 4 | Lucera Erick — Chief Financial Officer | Sale (S): 1,797 @ $26.28 | EDGAR |
| 2026-08-17 | 4 | Cox John — CEO & President, Director | Sale (S): 4,986 @ $26.28 | EDGAR |
| 2026-08-17 | 4 | Kerr Douglas — Chief Medical Officer | Sale (S): 1,556 @ $26.28 | EDGAR |
| 2026-07-29 | 4 | Kersten Dirk — Director | Sale (S): 256,072 @ $25.50 · Sale (S): 5,388 @ $26.04 | EDGAR |
| 2026-07-08 | 4 | Rhodes Jason P — Director | Sale (S): 253,039 @ $22.79 · Sale (S): 127,182 @ $22.79 · Sale (S): 100,019 @ $22.79 · Sale (S): 124,379 @ $23.17 · Sale (S): 29,587 @ $23.62 · Sale (S): 62,543 @ $23.17 · +4 more | EDGAR |
| 2026-06-30 | 4 | Rhodes Jason P — Director | Sale (S): 162,954 @ $21.28 · Sale (S): 81,903 @ $21.28 · Sale (S): 64,411 @ $21.28 · Sale (S): 102,969 @ $21.14 · Sale (S): 51,756 @ $21.14 · Sale (S): 40,702 @ $21.14 | EDGAR |
| 2026-06-26 | 4 | Lucera Erick — Chief Financial Officer | Sale (S): 2,362 @ $20.37 | EDGAR |
| 2026-06-26 | 4 | Rhodes Jason P — Director | Sale (S): 77,855 @ $21.13 · Sale (S): 39,131 @ $21.13 · Sale (S): 30,774 @ $21.13 · Sale (S): 50,530 @ $21.02 · Sale (S): 25,397 @ $21.02 · Sale (S): 19,973 @ $21.02 · +3 more | EDGAR |
| 2026-06-24 | 4 | Kersten Dirk — Director | Sale (S): 190,676 @ $20.57 · Sale (S): 71,629 @ $21.04 · Sale (S): 1,657 @ $21.47 | EDGAR |
| 2026-06-23 | 4 | Greene Barry E — Director | Grant/award (A): 57,463 (derivative) @ $0 | EDGAR |
| 2026-06-22 | 4 | Kersten Dirk — Director | Sale (S): 37,454 @ $20.14 · Sale (S): 46,901 @ $20.07 | EDGAR |
| 2026-06-17 | 4 | Friedl-Naderer Johanna — Chief Commercial Officer | Sale (S): 145 @ $18.33 | EDGAR |
| 2026-06-17 | 4 | Kerr Douglas — Chief Medical Officer | Sale (S): 887 @ $18.33 | EDGAR |
| 2026-06-17 | 4 | Cox John — CEO & President, Director | Sale (S): 2,683 @ $18.33 | EDGAR |
| 2026-06-09 | 4 | Kersten Dirk — Director | Grant/award (A): 35,152 (derivative) @ $0 | EDGAR |
| 2026-06-09 | 4 | Incerti Carlo — Director | Grant/award (A): 35,152 (derivative) @ $0 | EDGAR |
| 2026-06-09 | 4 | Stehman-Breen Catherine — Director | Grant/award (A): 35,152 (derivative) @ $0 | EDGAR |
| 2026-06-09 | 4 | Rhodes Jason P — Director | Grant/award (A): 35,152 (derivative) @ $0 | EDGAR |
| 2026-06-09 | 4 | Lubner David Charles — Director | Grant/award (A): 35,152 (derivative) @ $0 | EDGAR |
| 2026-06-09 | 4 | Posner Brian S — Director | Purchase (P): 2,000 @ $16.94 · Grant/award (A): 35,152 (derivative) @ $0 | EDGAR |
| 2026-06-09 | 4 | HURWITZ EDWARD — Director | Grant/award (A): 35,152 (derivative) @ $0 | EDGAR |
| 2026-06-05 | 4 | Posner Brian S — Director | Purchase (P): 2,500 @ $17.48 | EDGAR |
| 2026-05-28 | 4 | Posner Brian S — Director | Purchase (P): 2,000 @ $18.21 | EDGAR |
| 2026-05-22 | 4 | Posner Brian S — Director | Purchase (P): 2,500 @ $17.12 | EDGAR |
| 2026-05-14 | 4 | Friedl-Naderer Johanna — Chief Commercial Officer | Sale (S): 228 @ $18.36 | EDGAR |
| 2026-05-14 | 4 | Kerr Douglas — Chief Medical Officer | Sale (S): 1,564 @ $18.36 | EDGAR |
| 2026-05-14 | 4 | Lucera Erick — Chief Financial Officer | Sale (S): 1,448 @ $18.36 | EDGAR |
| 2026-05-14 | 4 | Cox John — CEO & President, Director | Sale (S): 3,311 @ $18.36 | EDGAR |
| 2026-05-06 | 4 | Rhodes Jason P — Director | Sale (S): 3,136 @ $18 · Sale (S): 6,241 @ $18 · Sale (S): 61 @ $18 · Sale (S): 2,466 @ $18 · Sale (S): 3,056 @ $18.03 · Sale (S): 6,081 @ $18.03 · +6 more | EDGAR |
| 2026-04-30 | 4 | Rhodes Jason P — Director | Sale (S): 59,870 @ $18.38 · Sale (S): 119,115 @ $18.38 · Sale (S): 1,170 @ $18.38 · Sale (S): 47,082 @ $18.38 · Sale (S): 26 @ $19 · Sale (S): 52 @ $19 · +2 more | EDGAR |
| 2026-04-28 | 4 | Lubner David Charles — Director | Gift (G): 53,625 @ $0 | EDGAR |
| 2026-04-27 | 4 | Rhodes Jason P — Director | Sale (S): 19,261 @ $19.19 · Sale (S): 38,322 @ $19.19 · Sale (S): 377 @ $19.19 · Sale (S): 15,148 @ $19.19 · Sale (S): 36,345 @ $18.48 · Sale (S): 72,310 @ $18.48 · +6 more | EDGAR |
| 2026-04-23 | 4 | Kersten Dirk — Director | Sale (S): 8,300 @ $20.01 · Sale (S): 2,652 @ $20.00 | EDGAR |
| 2026-04-22 | 4 | Rhodes Jason P — Director | Sale (S): 71,676 @ $20.06 · Sale (S): 142,604 @ $20.06 · Sale (S): 1,401 @ $20.06 · Sale (S): 56,368 @ $20.06 · Sale (S): 71,499 @ $19.51 · Sale (S): 142,253 @ $19.51 · +10 more | EDGAR |
| 2026-04-21 | 4 | Kersten Dirk — Director | Sale (S): 211,974 @ $20.29 · Sale (S): 125,274 @ $20.07 | EDGAR |
| 2026-04-17 | 4 | Kersten Dirk — Director | Sale (S): 81,840 @ $20.27 · Sale (S): 11,116 @ $21.10 · Sale (S): 6,657 @ $20.06 | EDGAR |
| 2026-04-03 | 4 | Lucera Erick — Chief Financial Officer | Sale (S): 5,727 @ $18.64 | EDGAR |
| 2026-04-01 | 4 | Posner Brian S — Director | Purchase (P): 2,000 @ $17.08 | EDGAR |
| 2026-03-13 | 4 | Kersten Dirk — Director | Sale (S): 129,672 @ $19.52 | EDGAR |
| 2026-03-13 | 4 | Posner Brian S — Director | Purchase (P): 2,000 @ $19.35 | EDGAR |
| 2026-03-11 | 4 | Kersten Dirk — Director | Sale (S): 177,690 @ $17.72 · Sale (S): 9,482 @ $18.21 · Sale (S): 219,758 @ $19.32 · Sale (S): 281,858 @ $19.80 | EDGAR |
| 2026-03-10 | 4 | Posner Brian S — Director | Purchase (P): 3,000 @ $15.06 | EDGAR |
| 2026-03-06 | 4 | Friedl-Naderer Johanna — Chief Commercial Officer | Sale (S): 148 @ $14.90 | EDGAR |
| 2026-03-06 | 4 | Kerr Douglas — Chief Medical Officer | Sale (S): 904 @ $14.90 | EDGAR |
| 2026-03-06 | 4 | Cox John — CEO & President, Director | Sale (S): 2,732 @ $14.90 | EDGAR |
Recent 8-K events — Dyne Therapeutics, Inc.
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-07-29 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-07-22 | 8-K | 1.01 — Entry into a Material Definitive Agreement 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-07-20 | 8-K | 8.01 — Other Events | EDGAR |
| 2026-06-22 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers | EDGAR |
| 2026-06-17 | 8-K | 1.01 — Entry into a Material Definitive Agreement 2.03 — Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant | EDGAR |
| 2026-06-08 | 8-K | 5.07 — Submission of Matters to a Vote of Security Holders | EDGAR |
| 2026-06-03 | 8-K | 7.01 — Regulation FD Disclosure 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-11 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-03-02 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-01-12 | 8-K | 2.02 — Results of Operations and Financial Condition 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
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