Companies / Summit Therapeutics Inc.
Summit Therapeutics Inc.
Nasdaq: SMMTCIK 1599298MIAMI, FL
Insider flow · last 90 daysNet buys $51.45M
Financials · FY2024
Ownership
797.7M shares outstanding · as of Jul 17, 2026
Ownership
| Insiders | 75.17% | 599,708,353 |
| Institutions | 15.50% | 123,679,778 |
| Public float | 9.32% | 74,361,471 |
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 9
View all →| Insider | % of shares | Shares |
|---|---|---|
Robert W. DugganCEOCo-Chief Executive Officer · Director · 10% owner | 75.18% | 599,708,353 |
Anand BhaskarChief Accounting Officer | — | — |
Booth Robert F.Director | — | — |
Cesano AlessandraDirector | — | — |
Clark Kenneth ADirector | — | — |
Huber JeffDirector | — | — |
Ronaghi MostafaDirector | — | — |
Xia YuDirector | — | — |
Zanganeh MahkamCEOCo-Chief Executive Officer · Director · 10% owner | — | — |
Institutional holders 220
View all →| Holder | Value | % of shares |
|---|---|---|
| $689.97M | 4.56% | |
| $233.68M | 1.67% | |
| $195.49M | 1.40% | |
| $138.95M | 1.20% | |
| $138.84M | 1.19% | |
| $62.89M | 0.42% | |
| $43.30M | 0.31% | |
| $42.51M | 0.28% | |
| $24.86M | 0.18% | |
| $24.38M | 0.17% |
Activity
InsidersInstitutions
What insiders are doing in this stock (Form 4).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Jun 12, 2026 | Robert W. Duggan CEO | Buy | Common Stock | $49.99M | +3.8M +0.67% | 573,883,879 71.94% of shares | high |
| Jun 4, 2026 | Robert W. Duggan CEO | Buy | Common Stock | $1.46M | +100K +0.39% | 25,824,474 3.24% of shares | high |
| Jan 2, 2026 | Cesano Alessandra Director | Grant | Stock Option (right to buy) | — | +3K | 3,219 <0.01% of shares | low |
| Jan 2, 2026 | Cesano Alessandra Director | Grant | Stock Option (right to buy) | — | +35K | 35,000 <0.01% of shares | low |
| Jan 8, 2026 | Anand Bhaskar Executive | Grant | Stock Option (right to buy) | — | +30K | 30,000 <0.01% of shares | low |
| Jan 2, 2026 | Xia Yu Director | Grant | Stock Option (right to buy) | — | +35K | 35,000 <0.01% of shares | low |
| Jan 2, 2026 | Clark Kenneth A Director | Grant | Stock Option (right to buy) | — | +18K | 17,796 <0.01% of shares | low |
| Jan 2, 2026 | Clark Kenneth A Director | Grant | Stock Option (right to buy) | — | +35K | 35,000 <0.01% of shares | low |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| SMMT | Common Stock | 86627T108 |