Summit Therapeutics Inc (SMMT) insider trading
Every open-market stock purchase and sale by Summit Therapeutics Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Insiders bought $114M over the last 12 months (8 buys).
- Last insider buy: Mahkam Zanganeh (CEO), $50M, 4 months ago.
Last 12 months: insiders bought $114M (8 buys) and sold $0 (0 sales). Last close $14.11 on Jun 7, 2026.
Recent SMMT insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Jun 12, 2026 | Robert W Duggan (CEO) | Bought | $50M |
| Jun 12, 2026 | Mahkam Zanganeh (CEO) | Bought | $50M |
| Jun 4, 2026 | Mahkam Zanganeh (CEO) | Bought | $1.5M |
| Jun 4, 2026 | Robert W Duggan (CEO) | Bought | $1.5M |
| Jun 4, 2026 | Manmeet Singh Soni (CFO) | Bought | $361K |
| Jan 8, 2026 | Bhaskar Anand (C-suite exec) | Bought (not open market) | $565K |
| Jan 2, 2026 | Alessandra Cesano (Director) | Bought (not open market) | $613K |
| Jan 2, 2026 | Robert F. Booth (Director) | Bought (not open market) | $613K |
| Jan 2, 2026 | Kenneth A Clark (Director) | Bought (not open market) | $613K |
| Jan 2, 2026 | Jeff Huber (Director) | Bought (not open market) | $613K |
| Jan 2, 2026 | Mostafa Ronaghi (Director) | Bought (not open market) | $613K |
| Jan 2, 2026 | Yu Xia (Director) | Bought (not open market) | $613K |
| Jan 2, 2026 | Kenneth A Clark (Director) | Bought (not open market) | $156K |
| Jan 2, 2026 | Robert W Duggan (CEO) | Bought (not open market) | $98.4K |
| Jan 2, 2026 | Mahkam Zanganeh (CEO) | Bought (not open market) | $98.4K |
| Jan 2, 2026 | Jeff Huber (Director) | Bought (not open market) | $86.6K |
| Jan 2, 2026 | Robert F. Booth (Director) | Bought (not open market) | $62.9K |
| Jan 2, 2026 | Alessandra Cesano (Director) | Bought (not open market) | $28.2K |
| Oct 21, 2025 | Robert W Duggan (CEO) | Bought (not open market) | $262M |
| Oct 21, 2025 | Mahkam Zanganeh (CEO) | Bought (not open market) | $262M |
| Oct 21, 2025 | Yu Xia (Director) | Bought | $10M |
| Oct 21, 2025 | Mahkam Zanganeh (CEO) | Bought (not open market) | $5M |
| Oct 21, 2025 | Robert W Duggan (CEO) | Bought (not open market) | $5M |
| Oct 21, 2025 | Manmeet Singh Soni (CFO) | Bought (not open market) | $1M |
| Oct 21, 2025 | Bhaskar Anand (C-suite exec) | Bought (not open market) | $500K |
Who's trading SMMT
- Robert W Duggan, CEO: bought $51.9M (3 buys), last Jun 12, 2026
- Mahkam Zanganeh, CEO: bought $51.9M (3 buys), last Jun 12, 2026
- Manmeet Singh Soni, CFO: bought $361K (1 buy), last Jun 4, 2026
- Bhaskar Anand, C-suite exec: other filings, last Jan 8, 2026
- Robert F. Booth, Director: other filings, last Jan 2, 2026
- Yu Xia, Director: bought $10M (1 buy), last Jan 2, 2026
- Kenneth A Clark, Director: other filings, last Jan 2, 2026
- Jeff Huber, Director: other filings, last Jan 2, 2026
- Mostafa Ronaghi, Director: other filings, last Jan 2, 2026
- Alessandra Cesano, Director: other filings, last Jan 2, 2026
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