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SUMMIT THERAP (SMMT)
NASDAQ
$13.21+$0.05 (+0.40%)
Price as of Aug 21, 2026 7:57 PM EDT- $10.5BMarket Cap
- -49.77%1-Year Change
- BiotechnologyIndustry
SUMMIT THERAP (SMMT)
$13.21+$0.05 (+0.40%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
BAKER BROS. ADVISORS LP | 4.11% | 32.8M | -3.6M (-10.99%) | Jun 30, 2026 |
VANGUARD GROUP INC | 1.40% | 11.2M | -202,508 (-1.81%) | Dec 31, 2025 |
FMR LLC | 1.26% | 10.0M | -809,252 (-8.06%) | Jun 30, 2026 |
STATE STREET CORP | 1.20% | 9.5M | +2.5M (+26.30%) | Jun 30, 2026 |
BLACKROCK, INC. | 1.19% | 9.5M | -124,717 (-1.31%) | Jun 30, 2026 |
BLACKROCK FUNDING, INC. /DE | 1.06% | 8.4M | +336,839 (+3.99%) | Dec 31, 2024 |
BLACKROCK INC. | 0.99% | 7.9M | -1.9M (-24.37%) | Jun 30, 2024 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
VANGUARD INDEX FUNDS | 1.24% | 9.9M | +553,318 (+5.61%) | Mar 31, 2026 |
T. Rowe Price Health Sciences Fund, Inc. | 0.75% | 5.9M | -1.3M (-22.49%) | Mar 31, 2026 |
SPDR SERIES TRUST | 0.61% | 4.9M | 0 (0.00%) | Apr 30, 2026 |
FIDELITY MT VERNON STREET TRUST | 0.51% | 4.1M | +361,471 (+8.84%) | May 31, 2026 |
FIDELITY SELECT PORTFOLIOS | 0.23% | 1.9M | -390,804 (-20.92%) | May 31, 2026 |
FIDELITY CONCORD STREET TRUST | 0.23% | 1.8M | +89,477 (+4.97%) | May 31, 2026 |
SCHWAB STRATEGIC TRUST | 0.10% | 777,299 | +39,046 (+5.02%) | May 31, 2026 |
Current Ownership Distribution
- Insiders1.2B (44.35%)
- Institutions1.2B (44.01%)
- Mutual Funds304.8M (11.64%)
- Other0 (0.00%)
Insider Transactions
- 44.35% (1.2B)Current InsiderOwnership (%, shares)
- 2Number of InsiderBuying (last 12 months)
- $47.2BAmount of InsiderBuying (last 12 months)
- 0Number of InsiderSelling (last 12 months)
- $0.00Amount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
DUGGAN ROBERT W Co-Chief Executive Officer | Buy | Jun 12, 2026 | $50.0M | 3.8M | $13.12 | 573.9M |
Anand Bhaskar Chief Accounting Officer | Award | Jan 08, 2026 | $0.00 | 30,000 | $0.00 | 30,000 |
Xia Yu | Award | Jan 02, 2026 | $0.00 | 35,000 | $0.00 | 35,000 |
Booth Robert F. | Award | Jan 02, 2026 | $0.00 | 35,000 | $0.00 | 35,000 |
Ronaghi Mostafa | Award | Jan 02, 2026 | $0.00 | 35,000 | $0.00 | 35,000 |
Huber Jeff | Award | Jan 02, 2026 | $0.00 | 35,000 | $0.00 | 35,000 |
DUGGAN ROBERT W Co-Chief Executive Officer | Award | Jan 02, 2026 | $98,392.32 | 11,232 | $8.76 | 11,232 |
Clark Kenneth A | Award | Jan 02, 2026 | $0.00 | 35,000 | $0.00 | 35,000 |
Cesano Alessandra | Award | Jan 02, 2026 | $0.00 | 35,000 | $0.00 | 35,000 |
Huber Jeff | Award | Jan 02, 2026 | $86,592.60 | 9,885 | $8.76 | 9,885 |
Cesano Alessandra | Award | Jan 02, 2026 | $28,198.44 | 3,219 | $8.76 | 3,219 |
Booth Robert F. | Award | Jan 02, 2026 | $62,896.80 | 7,180 | $8.76 | 7,180 |
Clark Kenneth A | Award | Jan 02, 2026 | $155,892.96 | 17,796 | $8.76 | 17,796 |
DUGGAN ROBERT W Co-Chief Executive Officer | Award | Oct 21, 2025 | $262.0M | 14.0M | $18.74 | 570.1M |
Zanganeh Maky Co-Chief Executive Officer | Award | Oct 21, 2025 | $5.0M | 266,808 | $18.74 | 25.7M |
Soni Manmeet Singh COO and CFO | Award | Oct 21, 2025 | $999,985.14 | 53,361 | $18.74 | 3.1M |
Anand Bhaskar Chief Accounting Officer | Award | Oct 21, 2025 | $499,983.20 | 26,680 | $18.74 | 159,751 |
DUGGAN ROBERT W Co-Chief Executive Officer | Award | Oct 21, 2025 | $5.0M | 266,808 | $18.74 | 25.7M |
Zanganeh Maky Co-Chief Executive Officer | Buy | Oct 21, 2025 | $499,983.20 | 26,680 | $18.74 | 76,680 |
DUGGAN ROBERT W Co-Chief Executive Officer | Buy | Oct 21, 2025 | $499,983.20 | 26,680 | $18.74 | 76,680 |
Zanganeh Maky Co-Chief Executive Officer | Award | Oct 21, 2025 | $262.0M | 14.0M | $18.74 | 570.1M |
Anand Bhaskar Chief Accounting Officer | Award | Sep 18, 2025 | $0.00 | 50,000 | $0.00 | 50,000 |
DUGGAN ROBERT W Co-Chief Executive Officer | Buy | Sep 11, 2025 | $90,350.00 | 5,000 | $18.07 | 556.1M |
Zanganeh Maky Co-Chief Executive Officer | Buy | Sep 11, 2025 | $90,350.00 | 5,000 | $18.07 | 556.1M |
DUGGAN ROBERT W Co-Chief Executive Officer | Buy | Sep 10, 2025 | $5.9M | 333,394 | $17.68 | 556.1M |
Zanganeh Maky Co-Chief Executive Officer | Buy | Sep 10, 2025 | $5.9M | 333,394 | $17.68 | 556.1M |
DUGGAN ROBERT W Co-Chief Executive Officer | Exempt | May 30, 2025 | $0.00 | 74,545 | $0.00 | 0 |
Zanganeh Maky Co-Chief Executive Officer | Exempt | May 30, 2025 | $0.00 | 74,545 | $0.00 | 0 |
DUGGAN ROBERT W Co-Chief Executive Officer | Exempt | May 30, 2025 | $196,798.80 | 74,545 | $2.64 | 555.8M |
Zanganeh Maky Co-Chief Executive Officer | Exempt | May 30, 2025 | $196,798.80 | 74,545 | $2.64 | 555.8M |