| $350M | ||
| $217M | ||
| $172M | ||
| $109M | ||
| $107M | ||
| $104M |
Buys | $314,840 | 8 | 13 |
Sells | $168,369,342 | 52 | 87 |
| Posner Brian S | director | 8 | $314,840 | 0 | $0 | $314,840 |
| Friedl-Naderer Johanna | Chief Commercial Officer | 0 | $0 | 5 | $17,972 | $-17,972 |
| Kerr Douglas | Chief Medical Officer | 0 | $0 | 5 | $117,569 | $-117,569 |
| Lucera Erick | Chief Financial Officer | 0 | $0 | 4 | $228,676 | $-228,676 |
| Cox John | CEO & President | 0 | $0 | 5 | $336,865 | $-336,865 |
| Kersten Dirk | director | 0 | $0 | 14 | $38.57M | $-38.57M |
| Rhodes Jason P | director | 0 | $0 | 19 | $129.1M | $-129.1M |
Dyne Therapeutics, Inc. is a U.S.-based biotechnology firm focused on developing advanced treatments for genetically driven muscle disorders. Utilizing its proprietary FORCE platform, which is engineered to deliver disease-modifying therapeutics, the company is actively engaged in various programs. These initiatives target conditions such as myotonic dystrophy type 1, Duchenne muscular dystrophy, and facioscapulohumeral dystrophy, in addition to other rare skeletal, cardiac, and metabolic muscle diseases. The company was founded in 2017 and …
Over the last 12 months, insiders at Dyne Therapeutics, Inc. have bought $314,840 and sold $168.37M worth of Dyne Therapeutics, Inc. stock.
On average, over the past 5 years, insiders at Dyne Therapeutics, Inc. have bought $12.87M and sold $81M worth of stock each year.
Highest buying activity among insiders over the last 12 months: Posner Brian S (director) — $314,840.
The last purchase of 2,500 shares for transaction amount of $40,000 was made by Posner Brian S (director) on 2026‑10‑02.
| 2026-10-02 | Posner Brian S | director | 2,500 0.0016% | $16.00 | $40,000 | +5.03% | ||
| 2026-08-14 | Sale | Rhodes Jason P | director | 2.16M 1.2703% | $25.00 | $54.01M | -33.56% | |
| 2026-08-13 | Sale | Rhodes Jason P | director | 426,412 0.2601% | $26.20 | $11.17M | -34.09% | |
| 2026-08-13 | Sale | Cox John | CEO & President | 4,986 0.0031% | $26.28 | $131,032 | -34.09% | |
| 2026-08-13 | Sale | Kerr Douglas | Chief Medical Officer | 1,556 0.001% | $26.28 | $40,892 | -34.09% | |
| 2026-08-13 | Sale | Friedl-Naderer Johanna | Chief Commercial Officer | 226 0.0001% | $26.28 | $5,939 | -34.09% | |
| 2026-08-13 | Sale | Lucera Erick | Chief Financial Officer | 1,797 0.0011% | $26.28 | $47,225 | -34.09% | |
| 2026-07-27 | Sale | Kersten Dirk | director | 261,460 0.1574% | $25.51 | $6.67M | -29.56% | |
| 2026-07-07 | Sale | Rhodes Jason P | director | 297,211 0.1755% | $23.26 | $6.91M | -3.63% | |
| 2026-07-06 | Sale | Rhodes Jason P | director | 480,240 0.2899% | $22.79 | $10.94M | +1.62% | |
| 2026-06-29 | Sale | Rhodes Jason P | director | 195,427 0.1175% | $21.14 | $4.13M | +7.43% | |
| 2026-06-26 | Sale | Rhodes Jason P | director | 309,268 0.1901% | $21.28 | $6.58M | +8.79% | |
| 2026-06-25 | Sale | Rhodes Jason P | director | 24,100 0.0149% | $21.10 | $508,510 | +10.24% | |
| 2026-06-25 | Sale | Lucera Erick | Chief Financial Officer | 2,362 0.0014% | $20.37 | $48,114 | +10.24% | |
| 2026-06-24 | Sale | Rhodes Jason P | director | 95,900 0.0602% | $21.02 | $2.02M | +10.50% | |
| 2026-06-23 | Sale | Kersten Dirk | director | 73,286 0.0461% | $21.05 | $1.54M | +9.62% | |
| 2026-06-23 | Sale | Rhodes Jason P | director | 147,760 0.0932% | $21.13 | $3.12M | +9.62% | |
| 2026-06-22 | Sale | Kersten Dirk | director | 190,676 0.1137% | $20.57 | $3.92M | +5.41% | |
| 2026-06-18 | Sale | Kersten Dirk | director | 46,901 0.0288% | $20.07 | $941,373 | +10.05% | |
| 2026-06-17 | Sale | Kersten Dirk | director | 37,454 0.0238% | $20.14 | $754,316 | +12.11% |
| Kersten Dirk | director | 3586796 1.9207% | $64.74M | 3 | 56 | +56.53% |
| Rhodes Jason P | director | 428946 0.2297% | $7.74M | 1 | 30 | <0.0001% |
| Cox John | CEO & President | 363165 0.1945% | $6.56M | 2 | 8 | +20.31% |
| Posner Brian S | director | 27000 0.0145% | $487,350.00 | 8 | 0 | |
| Litespeed Management, L.L.C. | 10 percent owner | 28507291 15.2653% | $514.56M | 19 | 0 | |
| VV Manager II, LLC | 10 percent owner | 2880125 1.5423% | $51.99M | 1 | 0 | <0.0001% |
| RA CAPITAL MANAGEMENT, L.P. | 10 percent owner | 2805045 1.5021% | $50.63M | 1 | 0 | <0.0001% |
| Logos Global Management LP | 10 percent owner | 1504392 0.8056% | $27.15M | 1 | 0 | <0.0001% |
| HURWITZ EDWARD | 1326313 0.7102% | $23.94M | 2 | 0 | ||
| Atlas Venture Opportunity Fund II, L.P. | director | 934581 0.5005% | $16.87M | 1 | 0 | <0.0001% |
| FLEXON ROBERT C | President and CEO | 720506 0.3858% | $13.01M | 8 | 0 | |
| Lubner David Charles | director | 177872 0.0952% | $3.21M | 1 | 0 | |
| Freeland Clint | Exec. VP and CFO | 71894 0.0385% | $1.3M | 3 | 0 | |
| Callaway Catherine B. | Exec VP and General Counsel | 63042 0.0338% | $1.14M | 1 | 0 | |
| Wood Patrick III | director | 45023 0.0241% | $812,665.15 | 3 | 0 | |
| Stehman-Breen Catherine | director | 35574 0.019% | $642,110.70 | 1 | 0 | |
| Klein Lawrence Otto | director | 35574 0.019% | $642,110.70 | 1 | 0 | |
| HAMMICK PATRICIA A | director | 25000 0.0134% | $451,250.00 | 3 | 0 | |
| Stein Jeffrey Scott | director | 15489 0.0083% | $279,576.45 | 1 | 0 | |
| GRIJALVA VICTOR | director | 15000 0.008% | $270,750.00 | 1 | 0 | |
| TRUBECK WILLIAM L | director | 11000 0.0059% | $198,550.00 | 2 | 0 | |
| ELWARD THOMAS W | director | 5000 0.0027% | $90,250.00 | 1 | 0 | |
| Kuersteiner Richard Lee | director | 2500 0.0013% | $45,125.00 | 1 | 0 | |
| Ackermann Hilary E. | director | 1000 0.0005% | $18,050.00 | 1 | 0 |
$52,263,649 | 70 | 1.18% | $2.49B | |
$104,428,685 | 44 | 22.55% | $3.78B | |
$1,275,975,557 | 32 | 19.44% | $3.54B | |
$151,136,640 | 31 | -1.41% | $3.95B | |
$9,463,680 | 28 | 0.72% | $2.4B |
| Increased Positions | 155 | +74.52% | 50M | +31.95% |
| Decreased Positions | 93 | -44.71% | 27M | -17.45% |
| New Positions | 60 | New | 13M | New |
| Sold Out Positions | 34 | Sold Out | 9M | Sold Out |
| Total Postitions | 270 | +29.81% | 179M | +14.5% |
| Janus Henderson Group Plc | $272,792.00 | 9.1% | 14.75M | +5M | +56.24% | 2025-09-30 |
| Vanguard Group Inc | $180,568.00 | 6.03% | 9.76M | +2M | +27.57% | 2025-09-30 |
| Blackrock, Inc. | $178,246.00 | 5.95% | 9.63M | +2M | +19.27% | 2025-09-30 |
| Atlas Venture Life Science Advisors, Llc | $168,914.00 | 5.64% | 9.13M | 0 | 0% | 2025-09-30 |
| Fcpm Iii Services B.V. | $101,063.00 | 3.37% | 5.46M | 0 | 0% | 2025-09-30 |
| Fmr Llc | $99,935.00 | 3.34% | 5.4M | +108,547 | +2.05% | 2025-09-30 |
| State Street Corp | $97,475.00 | 3.25% | 5.27M | +2M | +57.02% | 2025-09-30 |
| Siren, L.L.C. | $87,490.00 | 2.92% | 4.73M | -107,263 | -2.22% | 2025-09-30 |
| Tcg Crossover Management, Llc | $85,380.00 | 2.85% | 4.62M | +848,484 | +22.53% | 2025-09-30 |
| Adage Capital Partners Gp, L.L.C. | $65,749.00 | 2.19% | 3.55M | +363,000 | +11.38% | 2025-09-30 |