CIK 0001818794 · Large accelerated filer
Dyne Therapeutics, Inc.
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- DYN
- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- FY end
- Dec 31
- Incorporated
- DE
- Entity type
- operating
- EIN
- 364883909
- Phone
- (781) 786-8230
- Business address
- 1560 TRAPELO ROAD, WALTHAM, MA, 02451
- Open-market buys, last 90 days
- $40,000
- in 1 filing
- Open-market sales, last 90 days
- $247,777
- in 3 filings, $248K under 10b5-1 plans
Net −$207,777. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
Reading 100 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-04-20 | Rhodes Jason P Director | Sale 10b5-1 | −56,368 | $20.06 | $1.1M | 1,402,200 |
| 2026-04-20 | Kersten Dirk Director | Sale 10b5-1 | −125,274 | $20.07 | $2.5M | 4,207,525 |
| 2026-04-17 | Kersten Dirk Director | Sale 10b5-1 | −211,974 | $20.29 | $4.3M | 4,332,799 |
| 2026-04-16 | Kersten Dirk Director | Sale 10b5-1 | −11,116 | $21.10 | $235K | 4,551,430 |
| 2026-04-16 | Kersten Dirk Director | Sale 10b5-1 | −6,657 | $20.06 | $134K | 4,544,773 |
| 2026-04-15 | Kersten Dirk Director | Sale 10b5-1 | −81,840 | $20.27 | $1.7M | 4,562,546 |
| 2026-04-01 | Lucera Erick Chief Financial Officer | Sale 10b5-1 | −5,727 | $18.64 | $107K | 125,373 |
| 2026-03-30 | Posner Brian S Director | Purchase | +2,000 | $17.08 | $34K | 15,500 |
| 2026-03-11 | Posner Brian S Director | Purchase | +2,000 | $19.35 | $39K | 13,500 |
| 2026-03-11 | Kersten Dirk Director | Sale 10b5-1 | −129,672 | $19.52 | $2.5M | 4,644,386 |
| 2026-03-10 | Kersten Dirk Director | Sale 10b5-1 | −9,482 | $18.21 | $173K | 5,275,674 |
| 2026-03-10 | Kersten Dirk Director | Sale 10b5-1 | −219,758 | $19.33 | $4.2M | 5,055,916 |
| 2026-03-10 | Kersten Dirk Director | Sale 10b5-1 | −281,858 | $19.80 | $5.6M | 4,774,058 |
| 2026-03-09 | Kersten Dirk Director | Sale 10b5-1 | −177,690 | $17.72 | $3.1M | 5,285,156 |
| 2026-03-06 | Posner Brian S Director | Purchase | +3,000 | $15.06 | $45K | 11,500 |
| 2026-03-05 | Friedl-Naderer Johanna Chief Commercial Officer | Sale 10b5-1 | −148 | $14.90 | $2K | 154,581 |
| 2026-03-05 | Kerr Douglas Chief Medical Officer | Sale 10b5-1 | −904 | $14.90 | $13K | 171,606 |
| 2026-03-05 | Cox John CEO & President | Sale 10b5-1 | −2,732 | $14.90 | $41K | 374,145 |
| 2026-02-12 | Cox John CEO & President | Grant or award | +180,000 | 376,877 | ||
| 2026-02-12 | Cox John CEO & President | Grant or award · Stock option (right to buy) | +285,000 | 285,000 |
Page 7 of 29 · 561 trades