Dirk Kersten insider trades: Dyne Therapeutics (DYN) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Dirk reports to the SEC
Open-market buys and sales
29 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jun 23, 2026 | DYN | ↓ Sell | 263,962 | $20.70 | $5.5M | Indirect | Jun 24, 2026 (1d) |
| Jun 18, 2026 | DYN | ↓ Sell | 84,355 | $20.10 | $1.7M | Indirect | Jun 22, 2026 (4d) |
| Apr 22, 2026 | DYN | ↓ Sell | 10,952 | $20.01 | $219K | Indirect | Apr 23, 2026 (1d) |
| Apr 16, 2026 | DYN | ↓ Sell | 99,613 | $20.35 | $2.0M | Indirect | Apr 17, 2026 (1d) |
| Mar 10, 2026 | DYN | ↓ Sell | 688,788 | $19.09 | $13.1M | Indirect | Mar 11, 2026 (1d) |
| Dec 9, 2024 | DYN | ↓ Sell | 136,112 | $29.30 | $4.0M | Indirect | Dec 10, 2024 (1d) |
| Dec 5, 2024 | DYN | ↓ Sell | 138,845 | $29.38 | $4.1M | Indirect | Dec 6, 2024 (1d) |
| Dec 3, 2024 | DYN | ↓ Sell | 110,933 | $29.50 | $3.3M | Indirect | Dec 4, 2024 (1d) |
| Nov 14, 2024 | DYN | ↓ Sell | 19,732 | $34.14 | $674K | Indirect | Nov 15, 2024 (1d) |
| Oct 21, 2024 | DYN | ↓ Sell | 13,535 | $35.16 | $476K | Indirect | Oct 22, 2024 (1d) |
| Oct 17, 2024 | DYN | ↓ Sell | 36,684 | $35.29 | $1.3M | Indirect | Oct 18, 2024 (1d) |
| Oct 3, 2024 | DYN | ↓ Sell | 5,441 | $35.13 | $191K | Indirect | Oct 7, 2024 (4d) |
| Oct 2, 2024 | DYN | ↓ Sell | 29,941 | $35.32 | $1.1M | Indirect | Oct 3, 2024 (1d) |
| Sep 30, 2024 | DYN | ↓ Sell | 30,974 | $35.50 | $1.1M | Indirect | Oct 1, 2024 (1d) |
| Sep 26, 2024 | DYN | ↓ Sell | 3,617 | $35.14 | $127K | Indirect | Sep 27, 2024 (1d) |
| Sep 23, 2024 | DYN | ↓ Sell | 120,242 | $36.07 | $4.3M | Indirect | Sep 24, 2024 (1d) |
| Sep 19, 2024 | DYN | ↓ Sell | 80,293 | $36.15 | $2.9M | Indirect | Sep 20, 2024 (1d) |
| Sep 17, 2024 | DYN | ↓ Sell | 4,592 | $35.10 | $161K | Indirect | Sep 18, 2024 (1d) |
| Sep 5, 2024 | DYN | ↓ Sell | 1,577 | $35.03 | $55K | Indirect | Sep 9, 2024 (4d) |
| Aug 30, 2024 | DYN | ↓ Sell | 31,300 | $45.59 | $1.4M | Indirect | Sep 4, 2024 (5d) |
| Aug 29, 2024 | DYN | ↓ Sell | 134,261 | $45.03 | $6.0M | Indirect | Aug 30, 2024 (1d) |
| Aug 27, 2024 | DYN | ↓ Sell | 154,900 | $44.87 | $7.0M | Indirect | Aug 28, 2024 (1d) |
| Aug 23, 2024 | DYN | ↓ Sell | 180,409 | $46.02 | $8.3M | Indirect | Aug 26, 2024 (3d) |
| Aug 21, 2024 | DYN | ↓ Sell | 222,603 | $46.61 | $10.4M | Indirect | Aug 22, 2024 (1d) |
| Aug 19, 2024 | DYN | ↓ Sell | 248,675 | $45.48 | $11.3M | Indirect | Aug 20, 2024 (1d) |
| Aug 15, 2024 | DYN | ↓ Sell | 281,541 | $44.76 | $12.6M | Indirect | Aug 16, 2024 (1d) |
| Aug 13, 2024 | DYN | ↓ Sell | 212,477 | $42.93 | $9.1M | Indirect | Aug 14, 2024 (1d) |
| Aug 9, 2024 | DYN | ↓ Sell | 183,834 | $42.85 | $7.9M | Indirect | Aug 12, 2024 (3d) |
| Jan 9, 2024 | DYN | ↑ Buy | 1,714,285 | $17.50 | $30.0M | Indirect | Jan 11, 2024 (2d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other DYN insiders
Open-market trades in the last 12 months
About Dirk Kersten's insider trades
Dirk Kersten is an insider at Dyne Therapeutics (DYN). Since Jan 9, 2024, Dirk has reported 1 open-market purchase worth $30.0M and 28 sales worth $120.3M on SEC Form 4. In the last 12 months: 5 sales ($22.6M).
Their filings also include grants and awards (6 filings), conversions (1 filing), other transactions (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every DYN insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.