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DYNE THERAPEUTCS (DYN)
NASDAQ
$26.11+$0.010 (+0.04%)
Price as of Aug 21, 2026 7:30 PM EDT- $4.9BMarket Cap
- 107.47%1-Year Change
- BiotechnologyIndustry
DYNE THERAPEUTCS (DYN)
$26.11+$0.010 (+0.04%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | 16.55% | 30.9M | +126,486 (+0.41%) | Jun 30, 2026 |
JANUS HENDERSON GROUP PLC | 7.31% | 13.6M | -240,346 (-1.76%) | Mar 31, 2026 |
BLACKROCK, INC. | 6.64% | 12.4M | +704,460 (+5.68%) | Jun 30, 2026 |
N/A | 6.42% | 12.0M | +12.0M (+100.00%) | Jun 30, 2026 |
JUPITER TOPCO LLC | 6.42% | 12.0M | +12.0M (+100.00%) | Jun 30, 2026 |
VANGUARD GROUP INC | 6.01% | 11.2M | +1.5M (+12.97%) | Dec 31, 2025 |
FMR LLC | 6.00% | 11.2M | +2.3M (+20.51%) | Jun 30, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
VANGUARD INDEX FUNDS | 4.84% | 9.0M | +173,786 (+1.92%) | Mar 31, 2026 |
T. Rowe Price Small-Cap Stock Fund, Inc. | 3.75% | 7.0M | +1.6M (+22.45%) | Mar 31, 2026 |
T. Rowe Price Small-Cap Value Fund, Inc. | 2.48% | 4.6M | +2.2M (+46.68%) | Mar 31, 2026 |
FIDELITY MT VERNON STREET TRUST | 2.36% | 4.4M | +1.7M (+38.00%) | May 31, 2026 |
T. Rowe Price Equity Funds, Inc. | 2.04% | 3.8M | +859,802 (+22.57%) | Mar 31, 2026 |
SPDR SERIES TRUST | 1.84% | 3.4M | 0 (0.00%) | Apr 30, 2026 |
T. Rowe Price Capital Appreciation Fund, Inc. | 1.76% | 3.3M | +3.3M (+100.00%) | Mar 31, 2026 |
Current Ownership Distribution
- Institutions1.9B (83.80%)
- Mutual Funds336.4M (14.86%)
- Insiders30.4M (1.34%)
- Other0 (0.00%)
Insider Transactions
- 1.34% (30.4M)Current InsiderOwnership (%, shares)
- 1Number of InsiderBuying (last 12 months)
- $581,115.00Amount of InsiderBuying (last 12 months)
- 6Number of InsiderSelling (last 12 months)
- $1.8BAmount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
Friedl-Naderer Johanna Chief Commercial Officer | Sell | Aug 13, 2026 | $5,939.28 | 226 | $26.28 | 153,982 |
Kerr Douglas Chief Medical Officer | Sell | Aug 13, 2026 | $40,891.68 | 1,556 | $26.28 | 167,599 |
Cox John CEO & President | Sell | Aug 13, 2026 | $131,032.08 | 4,986 | $26.28 | 363,165 |
Lucera Erick Chief Financial Officer | Sell | Aug 13, 2026 | $47,225.16 | 1,797 | $26.28 | 119,766 |
Kersten Dirk | Sell | Jul 27, 2026 | $6.5M | 256,072 | $25.50 | 3.6M |
Kersten Dirk | Sell | Jul 27, 2026 | $140,318.61 | 5,388 | $26.04 | 3.6M |
Rhodes Jason P | Sell | Jul 07, 2026 | $2.9M | 124,379 | $23.17 | 4.1M |
Rhodes Jason P | Sell | Jul 07, 2026 | $698,844.94 | 29,587 | $23.62 | 4.1M |
Rhodes Jason P | Sell | Jul 07, 2026 | $1.4M | 62,543 | $23.17 | 1.2M |
Rhodes Jason P | Sell | Jul 07, 2026 | $350,615.28 | 14,844 | $23.62 | 1.1M |
Rhodes Jason P | Sell | Jul 07, 2026 | $1.1M | 49,193 | $23.17 | 826,719 |
Rhodes Jason P | Sell | Jul 07, 2026 | $275,527.30 | 11,665 | $23.62 | 815,054 |
Rhodes Jason P | Sell | Jul 07, 2026 | $118,050.00 | 5,000 | $23.61 | 2,962 |
Rhodes Jason P | Sell | Jul 06, 2026 | $5.8M | 253,039 | $22.79 | 4.2M |
Rhodes Jason P | Sell | Jul 06, 2026 | $2.9M | 127,182 | $22.79 | 1.2M |
Rhodes Jason P | Sell | Jul 06, 2026 | $2.3M | 100,019 | $22.79 | 875,912 |
Rhodes Jason P | Sell | Jun 29, 2026 | $2.2M | 102,969 | $21.14 | 4.5M |
Rhodes Jason P | Sell | Jun 29, 2026 | $1.1M | 51,756 | $21.14 | 1.3M |
Rhodes Jason P | Sell | Jun 29, 2026 | $860,440.28 | 40,702 | $21.14 | 975,931 |
Rhodes Jason P | Sell | Jun 26, 2026 | $3.5M | 162,954 | $21.28 | 4.6M |
Rhodes Jason P | Sell | Jun 26, 2026 | $1.7M | 81,903 | $21.28 | 1.4M |
Rhodes Jason P | Sell | Jun 26, 2026 | $1.4M | 64,411 | $21.28 | 1.0M |
Lucera Erick Chief Financial Officer | Sell | Jun 25, 2026 | $48,113.94 | 2,362 | $20.37 | 121,563 |
Kersten Dirk | Sell | Jun 23, 2026 | $1.5M | 71,629 | $21.04 | 3.8M |
Kersten Dirk | Sell | Jun 23, 2026 | $35,582.75 | 1,657 | $21.47 | 3.8M |
Greene Barry E | Award | Jun 22, 2026 | $0.00 | 57,463 | $0.00 | 57,463 |
Kersten Dirk | Sell | Jun 22, 2026 | $3.9M | 190,676 | $20.57 | 3.9M |
Kersten Dirk | Sell | Jun 18, 2026 | $941,373.42 | 46,901 | $20.07 | 4.1M |
Kersten Dirk | Sell | Jun 17, 2026 | $754,316.07 | 37,454 | $20.14 | 4.2M |
Friedl-Naderer Johanna Chief Commercial Officer | Sell | Jun 16, 2026 | $2,657.85 | 145 | $18.33 | 154,208 |