Institutional Ownership
Summit Therapeutics Inc
CUSIP 86627T108COMSMMTQ1 2026
13D / 13G Filings
17
Schedule 13D/13G on record
Beneficial Filers
4
Distinct reporting persons
Largest Stake
81.8%
Max % of class reported
Institutional Holders
217
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
17 filings · latest Sep 13, 2024
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Sep 13, 2024 | Duggan Robert W | 13D/A | 75.2% | 555.74M | SEC |
| 2 | Mar 13, 2023 | Zanganeh Mahkam | 13D/A | 5.3% | 36.88M | SEC |
| 3 | Feb 16, 2023 | Duggan Robert W | 13D/A | 78.1% | 175.86M | SEC |
| 4 | Feb 14, 2023 | Polar Capital Holdings PLC | 13G/A | — | — | SEC |
| 5 | Dec 9, 2022 | Duggan Robert W | 13D/A | 81.8% | 175.86M | SEC |
| 6 | Aug 18, 2022 | Duggan Robert W | 13D/A | 81.2% | 166.52M | SEC |
| 7 | Feb 14, 2022 | Polar Capital Holdings PLC | 13G/A | 6.4% | 6.30M | SEC |
| 8 | May 14, 2021 | Duggan Robert W | 13D/A | 70.8% | 71.65M | SEC |
| 9 | Apr 22, 2021 | Duggan Robert W | 13D/A | 69.4% | 60.28M | SEC |
| 10 | Mar 26, 2021 | Duggan Robert W | 13D/A | 69.4% | 60.28M | SEC |
7 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Summit Therapeutics Inc.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Baker Bros. Advisors LP | 36.39M | $689.97M |
| 2 | Fmr LLC | 10.85M | $205.78M |
| 3 | Blackrock, Inc. | 9.65M | $183.04M |
| 4 | State Street Corp | 7.03M | $133.25M |
| 5 | Ubs Group AG | 3.68M | $69.78M |
| 6 | Geode Capital Management, LLC | 3.32M | $62.89M |
| 7 | D. E. Shaw & Co., Inc. | 2.24M | $42.51M |
| 8 | Morgan Stanley | 1.65M | $31.30M |
| 9 | Apeiron Capital Ltd | 1.31M | $24.82M |
| 10 | Pictet Asset Management Holding SA | 1.32M | $23.96M |