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
Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q2 2026 as of | State Street Corporation 13F manager | Add | Common Stock | $42.26M | +2.9M +43.71% | 9,536,796 1.20% of shares | medium |
| Q1 2026 as of | D. E. Shaw & Co., Inc. 13F manager | Add | Common Stock | $34.64M | +1.8M +439.93% | 2,242,229 0.28% of shares | medium |
| Q1 2026 as of | Norges Bank 13F manager | Exit | Common Stock | $-24.03M | -1.4M -100.00% | 0 | medium |
| Q1 2026 as of | Balyasny Asset Management L.P. 13F manager | Add | Common Stock | $9.44M | +498K +990.17% | 548,335 0.07% of shares | medium |
| Q1 2026 as of | Marshall Wace, LLP 13F manager | New | Common Stock | $9.01M | +475K | 475,241 0.06% of shares | medium |
| Q1 2026 as of | Two Sigma Investments, LP 13F manager | Add | Common Stock | $7.64M | +403K +69.68% | 981,185 0.12% of shares | medium |
| Q1 2026 as of | Millennium Management LLC 13F manager | Trim | Common Stock | $-6.50M | -343K -73.08% | 126,273 0.02% of shares | medium |
| Q4 2025 as of | Sculptor Capital LP 13F manager | New | Common Stock | $6.24M | +357K | 356,900 0.04% of shares | medium |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| SMMT | Common Stock | 86627T108 |