Company · CIK 0001818794 · SIC 2834 — Pharmaceutical Preparations · Nasdaq
Dyne Therapeutics, Inc. · DYN
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 8, 2026 SForm 4 → | Sep 8, 4:13 pm EDT | John CoxCEO & President, Director | 5,658 | $18.88 | $106,823 | 357,507 | −1.56% | 10b5-1 |
| Sep 4, 2026 SForm 4 → | Sep 8, 4:15 pm EDT | Johanna Friedl-NadererChief Commercial Officer | 1,085 | $23.42 | $25,408 | 152,897 | −0.70% | 10b5-1 |
| Sep 4, 2026 SForm 4 → | Sep 8, 4:14 pm EDT | Douglas KerrChief Medical Officer | 5,035 | $22.95 | $115,546 | 162,564 | −3.00% | 10b5-1 |
| Aug 13, 2026 SForm 4 → | Aug 17, 5:30 pm EDT | Jason P RhodesDirector | 2,586,928 | $25.20 | $65,184,894 | 428,946 | −85.8% | 10b5-1 |
| Aug 13, 2026 SForm 4 → | Aug 17, 4:08 pm EDT | Johanna Friedl-NadererChief Commercial Officer | 226 | $26.28 | $5,939 | 153,982 | −0.15% | 10b5-1 |
| Aug 13, 2026 SForm 4 → | Aug 17, 4:08 pm EDT | Douglas KerrChief Medical Officer | 1,556 | $26.28 | $40,892 | 167,599 | −0.92% | 10b5-1 |
| Aug 13, 2026 SForm 4 → | Aug 17, 4:07 pm EDT | John CoxCEO & President, Director | 4,986 | $26.28 | $131,032 | 363,165 | −1.35% | 10b5-1 |
| Aug 13, 2026 SForm 4 → | Aug 17, 4:06 pm EDT | Erick LuceraChief Financial Officer | 1,797 | $26.28 | $47,225 | 119,766 | −1.48% | 10b5-1 |
| Jul 27, 2026 SForm 4 → | Jul 29, 4:15 pm EDT | Dirk KerstenDirector | 261,460 | $25.51 | $6,670,769 | 3,586,796 | −6.79% | 10b5-1 |
| Jul 6, 2026 SForm 4 → | Jul 8, 5:35 pm EDT | Jason P RhodesDirector | 777,451 | $22.97 | $17,858,492 | 2,962 | −99.6% | 10b5-1 |
| Jun 26, 2026 SForm 4 → | Jun 30, 7:05 pm EDT | Jason P RhodesDirector | 504,695 | $21.23 | $10,712,550 | 975,931 | −34.1% | 10b5-1 |
| Jun 25, 2026 SForm 4 → | Jun 26, 4:15 pm EDT | Erick LuceraChief Financial Officer | 2,362 | $20.37 | $48,114 | 121,563 | −1.91% | |
| Jun 23, 2026 SForm 4 → | Jun 26, 8:40 am EDT | Jason P RhodesDirector | 267,760 | $21.09 | $5,646,497 | 1,081,044 | −19.9% | 10b5-1 late |
| Jun 22, 2026 SForm 4 → | Jun 24, 4:27 pm EDT | Dirk KerstenDirector | 263,962 | $20.70 | $5,464,611 | 3,848,256 | −6.42% | 10b5-1 |
| Jun 17, 2026 SForm 4 → | Jun 22, 4:15 pm EDT | Dirk KerstenDirector | 84,355 | $20.10 | $1,695,689 | 4,112,218 | −2.01% | 10b5-1 |
| Jun 16, 2026 SForm 4 → | Jun 17, 4:08 pm EDT | Douglas KerrChief Medical Officer | 887 | $18.33 | $16,259 | 169,155 | −0.52% | 10b5-1 |
| Jun 16, 2026 SForm 4 → | Jun 17, 4:07 pm EDT | Johanna Friedl-NadererChief Commercial Officer | 145 | $18.33 | $2,658 | 154,208 | −0.09% | 10b5-1 |
| Jun 16, 2026 SForm 4 → | Jun 17, 4:07 pm EDT | John CoxCEO & President, Director | 2,683 | $18.33 | $49,179 | 368,151 | −0.72% | 10b5-1 |
| Jun 8, 2026 PForm 4 → | Jun 9, 5:06 pm EDT | Brian S PosnerDirector | 2,000 | $16.94 | $33,880 | 24,500 | +8.89% | |
| Jun 3, 2026 PForm 4 → | Jun 5, 4:10 pm EDT | Brian S PosnerDirector | 2,500 | $17.48 | $43,700 | 22,500 | +12.5% |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Jun 22, 2026 AForm 4 → | Jun 23, 4:07 pm EDT | Barry E GreeneDirector | 57,463 | — | — | 57,463 | — | |
| Jun 5, 2026 AForm 4 → | Jun 9, 5:15 pm EDT | Edward HurwitzDirector | 35,152 | — | — | 35,152 | — | |
| Jun 5, 2026 AForm 4 → | Jun 9, 5:13 pm EDT | David Charles LubnerDirector | 35,152 | — | — | 35,152 | — | |
| Jun 5, 2026 AForm 4 → | Jun 9, 5:13 pm EDT | Jason P RhodesDirector | 35,152 | — | — | 35,152 | — | |
| Jun 5, 2026 AForm 4 → | Jun 9, 5:12 pm EDT | Dirk KerstenDirector | 35,152 | — | — | 35,152 | — | |
| Jun 5, 2026 AForm 4 → | Jun 9, 5:12 pm EDT | Carlo IncertiDirector | 35,152 | — | — | 35,152 | — | |
| Jun 5, 2026 AForm 4 → | Jun 9, 5:09 pm EDT | Catherine Stehman-BreenDirector | 35,152 | — | — | 35,152 | — | |
| Jun 5, 2026 AForm 4 → | Jun 9, 5:06 pm EDT | Brian S PosnerDirector | 35,152 | — | — | 35,152 | — |