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DYNE THERAPEUTCS (DYN)
NASDAQ
$20.55-$0.32 (-1.54%)
Price as of Jun 23, 2026 2:47 PM EDT- $3.5BMarket Cap
- 105.41%1-Year Change
- BiotechnologyIndustry
DYNE THERAPEUTCS (DYN)
$20.55-$0.32 (-1.54%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | 18.62% | 30.8M | +13.2M (+43.03%) | Mar 31, 2026 |
JANUS HENDERSON GROUP PLC | 8.26% | 13.6M | -240,346 (-1.76%) | Mar 31, 2026 |
BLACKROCK, INC. | 7.08% | 11.7M | +509,032 (+4.35%) | Mar 31, 2026 |
VANGUARD GROUP INC | 6.78% | 11.2M | +1.5M (+12.97%) | Dec 31, 2025 |
RA CAPITAL MANAGEMENT, L.P. | 5.88% | 9.7M | 0 (0.00%) | Jun 30, 2025 |
ATLAS VENTURE LIFE SCIENCE ADVISORS, LLC | 5.52% | 9.1M | 0 (0.00%) | Mar 31, 2026 |
FMR LLC | 5.39% | 8.9M | +2.3M (+26.26%) | Mar 31, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
VANGUARD INDEX FUNDS | 5.47% | 9.0M | +173,786 (+1.92%) | Mar 31, 2026 |
T. Rowe Price Small-Cap Stock Fund, Inc. | 4.24% | 7.0M | +1.6M (+22.45%) | Mar 31, 2026 |
iSHARES TRUST | 3.34% | 5.5M | +349,980 (+6.33%) | Mar 31, 2026 |
T. Rowe Price Small-Cap Value Fund, Inc. | 2.80% | 4.6M | +2.2M (+46.68%) | Mar 31, 2026 |
T. Rowe Price Equity Funds, Inc. | 2.30% | 3.8M | +859,802 (+22.57%) | Mar 31, 2026 |
SPDR SERIES TRUST | 2.08% | 3.4M | -457,841 (-13.32%) | Mar 31, 2026 |
T. Rowe Price Capital Appreciation Fund, Inc. | 1.98% | 3.3M | +3.3M (+100.00%) | Mar 31, 2026 |
Current Ownership Distribution
- Institutions1.7B (83.56%)
- Mutual Funds309.0M (15.23%)
- Insiders24.4M (1.20%)
- Other0 (0.00%)
Insider Transactions
- 1.20% (24.4M)Current InsiderOwnership (%, shares)
- 2Number of InsiderBuying (last 12 months)
- $1.9MAmount of InsiderBuying (last 12 months)
- 5Number of InsiderSelling (last 12 months)
- $644.4MAmount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
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 |
Lucera Erick Chief Financial Officer | Sell | Apr 01, 2026 | $106,751.28 | 5,727 | $18.64 | 125,373 |
Posner Brian S | Buy | Mar 30, 2026 | $34,160.00 | 2,000 | $17.08 | 15,500 |
Posner Brian S | Buy | Mar 11, 2026 | $38,700.00 | 2,000 | $19.35 | 13,500 |
Kersten Dirk | Sell | Mar 11, 2026 | $2.5M | 129,672 | $19.52 | 4.6M |
Kersten Dirk | Sell | Mar 10, 2026 | $172,687.13 | 9,482 | $18.21 | 5.3M |
Kersten Dirk | Sell | Mar 10, 2026 | $4.2M | 219,758 | $19.32 | 5.1M |
Kersten Dirk | Sell | Mar 10, 2026 | $5.6M | 281,858 | $19.80 | 4.8M |
Kersten Dirk | Sell | Mar 09, 2026 | $3.1M | 177,690 | $17.72 | 5.3M |
Posner Brian S | Buy | Mar 06, 2026 | $45,180.00 | 3,000 | $15.06 | 11,500 |
Cox John CEO & President | Sell | Mar 05, 2026 | $40,706.80 | 2,732 | $14.90 | 374,145 |
Friedl-Naderer Johanna Chief Commercial Officer | Sell | Mar 05, 2026 | $2,205.20 | 148 | $14.90 | 154,581 |
Kerr Douglas Chief Medical Officer | Sell | Mar 05, 2026 | $13,469.60 | 904 | $14.90 | 171,606 |
Friedl-Naderer Johanna Chief Commercial Officer | Award | Feb 12, 2026 | $0.00 | 90,000 | $0.00 | 90,000 |
Kerr Douglas Chief Medical Officer | Award | Feb 12, 2026 | $0.00 | 130,000 | $0.00 | 130,000 |
Friedl-Naderer Johanna Chief Commercial Officer | Award | Feb 12, 2026 | $0.00 | 60,000 | $0.00 | 154,729 |
Kerr Douglas Chief Medical Officer | Award | Feb 12, 2026 | $0.00 | 85,000 | $0.00 | 172,510 |
Cox John CEO & President | Award | Feb 12, 2026 | $0.00 | 285,000 | $0.00 | 285,000 |
Cox John CEO & President | Award | Feb 12, 2026 | $0.00 | 180,000 | $0.00 | 376,877 |
Posner Brian S | Award | Oct 01, 2025 | $0.00 | 70,000 | $0.00 | 70,000 |
Cox John CEO & President | Sell | Sep 05, 2025 | $35,402.40 | 2,640 | $13.41 | 199,539 |
Kerr Douglas Chief Medical Officer | Sell | Sep 05, 2025 | $11,706.93 | 873 | $13.41 | 88,390 |
Friedl-Naderer Johanna Chief Commercial Officer | Sell | Sep 05, 2025 | $1,931.04 | 144 | $13.41 | 94,873 |
Friedl-Naderer Johanna Chief Commercial Officer | Sell | Sep 04, 2025 | $11,863.38 | 894 | $13.27 | 95,017 |
Kerr Douglas Chief Medical Officer | Sell | Sep 04, 2025 | $47,135.04 | 3,552 | $13.27 | 89,263 |
Cox John CEO & President | Award | Jul 16, 2025 | $0.00 | 197,285 | $0.00 | 197,285 |
Friedl-Naderer Johanna Chief Commercial Officer | Award | Jul 16, 2025 | $0.00 | 51,255 | $0.00 | 51,255 |
Kerr Douglas Chief Medical Officer | Award | Jul 16, 2025 | $0.00 | 65,110 | $0.00 | 65,110 |