SMMT
Summit Therapeutics Inc.
Stock Price & Insider Activity
Historical close with open-market insider transaction markers
Insider activity
Sign in to download CSVBought$776.6M27 buy days
Sold$321.5K5 sell days
Net insider flow+$776.2Mnet buying · 10 years
Latest trade2026-06-12DUGGAN ROBERT W
| Date | Side | Insider | Role | Shares | Avg price | Value | Trades |
|---|---|---|---|---|---|---|---|
| 2026-06-12 | Buy | DUGGAN ROBERT W | CEO | 3,810,000 | $13.12 | $50.0M | 1 |
| 2026-06-12 | Buy | Zanganeh Mahkam | CEO | 3,810,000 | $13.12 | $50.0M | 1 |
| 2026-06-04 | Buy | Zanganeh Mahkam | CEO | 100,000 | $14.60 | $1.5M | 1 |
| 2026-06-04 | Buy | DUGGAN ROBERT W | CEO | 100,000 | $14.60 | $1.5M | 1 |
| 2026-06-04 | Buy | Soni Manmeet Singh | CFO | 50,000 | $14.45 | $722.2K | 2 |
| 2025-10-21 | Buy | Xia Yu | Director | 533,617 | $18.74 | $10.0M | 1 |
| 2025-10-21 | Buy | Zanganeh Mahkam | CEO | 26,680 | $18.74 | $500.0K | 1 |
| 2025-10-21 | Buy | DUGGAN ROBERT W | CEO | 26,680 | $18.74 | $500.0K | 1 |
| 2025-09-11 | Buy | DUGGAN ROBERT W | CEO | 5,000 | $18.07 | $90.3K | 1 |
| 2025-09-11 | Buy | Zanganeh Mahkam | CEO | 5,000 | $18.07 | $90.3K | 1 |
| 2025-09-10 | Buy | DUGGAN ROBERT W | CEO | 333,394 | $17.68 | $5.9M | 1 |
| 2025-09-10 | Buy | Zanganeh Mahkam | CEO | 333,394 | $17.68 | $5.9M | 1 |
| 2024-03-27 | Buy | Zanganeh Mahkam | CEO | 80,321 | $3.72 | $298.6K | 3 |
| 2024-03-26 | Buy | Dhingra Ankur | CFO | 100,000 | $3.75 | $375.0K | 1 |
| 2024-03-26 | Buy | Zanganeh Mahkam | CEO | 30,000 | $3.75 | $112.5K | 1 |
| 2023-12-13 | Buy | Dhingra Ankur | CFO | 20,400 | $2.17 | $44.3K | 2 |
| 2023-12-12 | Buy | Zanganeh Mahkam | CEO | 5,000 | $2.07 | $10.3K | 1 |
| 2023-10-13 | Buy | Soni Manmeet Singh | COO | 2,976,190 | $1.68 | $5.0M | 1 |
| 2023-03-08 | Buy | Zanganeh Mahkam | CEO | 40,305,459 | $1.05 | $42.3M | 4 |
| 2023-03-07 | Buy | Dhingra Ankur | CFO | 196,362 | $1.05 | $206.2K | 1 |
| 2023-03-06 | Buy | DUGGAN ROBERT W | CEO | 376,489,880 | $1.05 | $395.3M | 1 |
| 2022-08-16 | Buy | DUGGAN ROBERT W | CEO | 94,849,203 | $0.97 | $92.0M | 1 |
| 2022-08-16 | Buy | Zanganeh Maky | CEO | 5,809,132 | $0.97 | $5.6M | 3 |
| 2022-08-16 | Buy | Dhingra Ankur | CFO | 49,242 | $0.97 | $47.8K | 3 |
| 2021-05-12 | Buy | DUGGAN ROBERT W | CEO | 11,365,921 | $5.24 | $59.6M | 1 |
| 2021-05-12 | Buy | Zanganeh Maky | COO | 389,077 | $5.24 | $2.0M | 1 |
| 2020-11-30 | Sell | Powell David Jonathan | Other C-suite | 13,713 | $4.44 | $60.9K | 1 |
| 2020-11-27 | Sell | Powell David Jonathan | Other C-suite | 29,569 | $4.39 | $129.8K | 1 |
| 2020-11-25 | Sell | Powell David Jonathan | Other C-suite | 12,070 | $4.32 | $52.1K | 1 |
| 2020-11-24 | Sell | Powell David Jonathan | Other C-suite | 11,374 | $4.21 | $47.9K | 1 |
| 2020-11-23 | Sell | Powell David Jonathan | Other C-suite | 6,987 | $4.40 | $30.7K | 1 |
| 2020-11-06 | Buy | DUGGAN ROBERT W | CEO | 14,071,856 | $3.34 | $47.0M | 1 |