SMMT
Summit Therapeutics PLC
NASDAQ: SMMT · HEALTHCARE · BIOTECHNOLOGY
$21.46
+3.02% today
Updated 2026-04-30
Market cap
$16.50B
P/E ratio
—
P/S ratio
3,891.31x
EPS (TTM)
$-1.44
Dividend yield
—
52W range
$14 – $31
Volume
3.1M
Summit Therapeutics PLC (SMMT) Insider transactions
Net insider activity
Net buying (118,651,241 shares)
Buy transactions
95
Sell transactions
5
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-01-08 | ANAND, BHASKAR | Chief Accounting Officer | Buy | 30,000 | — | — |
| 2026-01-02 | ZANGANEH, MAHKAM | Director, Co-Chief Executive Officer, 10% Owner | Buy | 11,232 | $8.76 | $98392.32 |
| 2026-01-02 | XIA, YU | Director | Buy | 35,000 | — | — |
| 2026-01-02 | RONAGHI, MOSTAFA | Director | Buy | 35,000 | — | — |
| 2026-01-02 | HUBER, JEFF | Director | Buy | 35,000 | — | — |
| 2026-01-02 | HUBER, JEFF | Director | Buy | 9,885 | $8.76 | $86592.60 |
| 2026-01-02 | DUGGAN, ROBERT W | Director, Co-Chief Executive Officer, 10% Owner | Buy | 11,232 | $8.76 | $98392.32 |
| 2026-01-02 | CLARK, KENNETH A | Director | Buy | 35,000 | — | — |
| 2026-01-02 | CLARK, KENNETH A | Director | Buy | 17,796 | $8.76 | $155892.96 |
| 2026-01-02 | CESANO, ALESSANDRA | Director | Buy | 35,000 | — | — |
| 2026-01-02 | CESANO, ALESSANDRA | Director | Buy | 3,219 | $8.76 | $28198.44 |
| 2026-01-02 | BOOTH, ROBERT F. | Director | Buy | 35,000 | — | — |
| 2026-01-02 | BOOTH, ROBERT F. | Director | Buy | 7,180 | $8.76 | $62896.80 |
| 2025-10-21 | ZANGANEH, MAHKAM | Director, Co-Chief Executive Officer, 10% Owner | Buy | 13,980,789 | $18.74 | $262.00M |
| 2025-10-21 | ZANGANEH, MAHKAM | Director, Co-Chief Executive Officer, 10% Owner | Buy | 266,808 | $18.74 | $5.00M |
| 2025-10-21 | ZANGANEH, MAHKAM | Director, Co-Chief Executive Officer, 10% Owner | Buy | 26,680 | $18.74 | $499983.20 |
| 2025-10-21 | XIA, YU | Director | Buy | 533,617 | $18.74 | $10.00M |
| 2025-10-21 | SONI, MANMEET SINGH | Director, COO and CFO | Buy | 53,361 | $18.74 | $999985.14 |
| 2025-10-21 | DUGGAN, ROBERT W | Director, Co-Chief Executive Officer, 10% Owner | Buy | 13,980,789 | $18.74 | $262.00M |
| 2025-10-21 | DUGGAN, ROBERT W | Director, Co-Chief Executive Officer, 10% Owner | Buy | 266,808 | $18.74 | $5.00M |
| 2025-10-21 | DUGGAN, ROBERT W | Director, Co-Chief Executive Officer, 10% Owner | Buy | 26,680 | $18.74 | $499983.20 |
| 2025-10-21 | ANAND, BHASKAR | Chief Accounting Officer | Buy | 26,680 | $18.74 | $499983.20 |
| 2025-09-18 | ANAND, BHASKAR | Chief Accounting Officer | Buy | 50,000 | — | — |
| 2025-09-11 | ZANGANEH, MAHKAM | Director, Co-Chief Executive Officer, 10% Owner | Buy | 5,000 | $18.07 | $90350.00 |
| 2025-09-11 | DUGGAN, ROBERT W | Director, Co-Chief Executive Officer, 10% Owner | Buy | 5,000 | $18.07 | $90350.00 |
| 2025-09-10 | ZANGANEH, MAHKAM | Director, Co-Chief Executive Officer, 10% Owner | Buy | 333,394 | $17.68 | $5.89M |
| 2025-09-10 | DUGGAN, ROBERT W | Director, Co-Chief Executive Officer, 10% Owner | Buy | 333,394 | $17.68 | $5.89M |
| 2025-05-30 | ZANGANEH, MAHKAM | Director, Co-Chief Executive Officer, 10% Owner | Sale | 74,545 | — | — |
| 2025-05-30 | ZANGANEH, MAHKAM | Director, Co-Chief Executive Officer, 10% Owner | Buy | 74,545 | $2.64 | $196798.80 |
| 2025-05-30 | DUGGAN, ROBERT W | Director, Co-Chief Executive Officer, 10% Owner | Sale | 74,545 | — | — |
| 2025-05-30 | DUGGAN, ROBERT W | Director, Co-Chief Executive Officer, 10% Owner | Buy | 74,545 | $2.64 | $196798.80 |
| 2025-04-29 | ZANGANEH, MAHKAM | Director, Co-Chief Executive Officer, 10% Owner | Buy | 9,590,558 | — | — |
| 2025-04-29 | ZANGANEH, MAHKAM | Director, Co-Chief Executive Officer, 10% Owner | Buy | 1,040,000 | — | — |
| 2025-04-29 | ZANGANEH, MAHKAM | Director, Co-Chief Executive Officer, 10% Owner | Buy | 400,000 | — | — |
| 2025-04-29 | SONI, MANMEET SINGH | Director, COO and CFO | Buy | 11,200,000 | — | — |
| 2025-04-29 | DUGGAN, ROBERT W | Director, Co-Chief Executive Officer, 10% Owner | Buy | 9,590,558 | — | — |
| 2025-04-29 | DUGGAN, ROBERT W | Director, Co-Chief Executive Officer, 10% Owner | Buy | 1,040,000 | — | — |
| 2025-04-29 | DUGGAN, ROBERT W | Director, Co-Chief Executive Officer, 10% Owner | Buy | 400,000 | — | — |
| 2025-04-29 | ANAND, BHASKAR | Chief Accounting Officer | Buy | 600,000 | — | — |
| 2025-04-29 | ANAND, BHASKAR | Chief Accounting Officer | Buy | 75,000 | — | — |
| 2025-04-08 | ZANGANEH, MAHKAM | Director, Co-Chief Executive Officer, 10% Owner | Buy | 3,985,055 | — | — |
| 2025-04-08 | ZANGANEH, MAHKAM | Director, Co-Chief Executive Officer, 10% Owner | Buy | 3,985,055 | $1.58 | $6.30M |
| 2025-04-08 | DUGGAN, ROBERT W | Director, Co-Chief Executive Officer, 10% Owner | Buy | 3,985,055 | — | — |
| 2025-04-08 | DUGGAN, ROBERT W | Director, Co-Chief Executive Officer, 10% Owner | Buy | 3,985,055 | $1.58 | $6.30M |
| 2025-01-12 | ANAND, BHASKAR | Chief Accounting Officer | Buy | 75,000 | — | — |
| 2025-01-02 | ZANGANEH, MAHKAM | Director, Co-Chief Executive Officer, 10% Owner | Buy | 10,724 | $9.18 | $98446.32 |
| 2025-01-02 | XIA, YU | Director | Buy | 35,000 | — | — |
| 2025-01-02 | XIA, YU | Director | Buy | 5,438 | $9.18 | $49920.84 |
| 2025-01-02 | RONAGHI, MOSTAFA | Director | Buy | 35,000 | — | — |
| 2025-01-02 | HUBER, JEFF | Director | Buy | 35,000 | — | — |
| 2025-01-02 | DUGGAN, ROBERT W | Director, Co-Chief Executive Officer, 10% Owner | Buy | 10,724 | $9.18 | $98446.32 |
| 2025-01-02 | CLARK, KENNETH A | Director | Buy | 35,000 | — | — |
| 2025-01-02 | CLARK, KENNETH A | Director | Buy | 16,991 | $9.18 | $155977.38 |
| 2025-01-02 | CESANO, ALESSANDRA | Director | Buy | 35,000 | — | — |
| 2025-01-02 | CESANO, ALESSANDRA | Director | Buy | 3,073 | $9.18 | $28210.14 |
| 2025-01-02 | BOOTH, ROBERT F. | Director | Buy | 35,000 | — | — |
| 2025-01-02 | BOOTH, ROBERT F. | Director | Buy | 6,855 | $9.18 | $62928.90 |
| 2024-10-11 | CLARK, KENNETH A | Director | Buy | 200,000 | — | — |
| 2024-10-03 | ZANGANEH, MAHKAM | Director, Co-Chief Executive Officer | Sale | 315,681 | — | — |
| 2024-10-03 | ZANGANEH, MAHKAM | Director, Co-Chief Executive Officer | Buy | 315,681 | $1.58 | $498775.98 |
| 2024-09-11 | ZANGANEH, MAHKAM | Director, Co-Chief Executive Officer | Buy | 44,052 | $22.70 | $999980.40 |
| 2024-09-11 | SONI, MANMEET SINGH | Director, COO and CFO | Buy | 44,052 | $22.70 | $999980.40 |
| 2024-09-11 | HUBER, JEFF | Director | Buy | 44,052 | $22.70 | $999980.40 |
| 2024-09-11 | DUGGAN, ROBERT W | Director, Co-Chief Executive Officer, 10% Owner | Buy | 3,325,991 | $22.70 | $75.50M |
| 2024-09-11 | ANAND, BHASKAR | Chief Accounting Officer | Buy | 22,026 | $22.70 | $499990.20 |
| 2024-08-23 | ZANGANEH, MAHKAM | Director, Chief Executive Officer | Buy | 2,397,640 | — | — |
| 2024-08-23 | ZANGANEH, MAHKAM | Director, Chief Executive Officer | Buy | 260,000 | — | — |
| 2024-08-23 | ZANGANEH, MAHKAM | Director, Chief Executive Officer | Buy | 100,000 | — | — |
| 2024-08-23 | SONI, MANMEET SINGH | Director, COO and CFO | Buy | 2,800,000 | — | — |
| 2024-06-27 | HUBER, JEFF | Director | Buy | 200,000 | — | — |
| 2024-06-27 | HUBER, JEFF | Director | Buy | 17,883 | — | — |
| 2024-04-11 | RONAGHI, MOSTAFA | Director | Buy | 200,000 | — | — |
| 2024-04-11 | RONAGHI, MOSTAFA | Director | Buy | 25,315 | — | — |
| 2024-04-02 | SONI, MANMEET SINGH | Director, Chief Operating Officer | Buy | 1,100,000 | — | — |
| 2024-04-02 | ANAND, BHASKAR | Chief Accounting Officer | Buy | 600,000 | — | — |
| 2024-03-27 | ZANGANEH, MAHKAM | Director, Chief Executive Officer | Buy | 34,321 | $3.72 | $127674.12 |
| 2024-03-27 | ZANGANEH, MAHKAM | Director, Chief Executive Officer | Buy | 26,000 | $3.72 | $96720.00 |
| 2024-03-27 | ZANGANEH, MAHKAM | Director, Chief Executive Officer | Buy | 20,000 | $3.71 | $74200.00 |
| 2024-03-26 | ZANGANEH, MAHKAM | Director, Chief Executive Officer | Buy | 30,000 | $3.75 | $112500.00 |
| 2024-03-26 | DHINGRA, ANKUR | Chief Financial Officer | Buy | 100,000 | $3.75 | $375000.00 |
| 2024-01-02 | XIA, YU | Director | Buy | 200,000 | — | — |
| 2024-01-02 | XIA, YU | Director | Buy | 35,000 | — | — |
| 2024-01-02 | MAHATME, UJWALA | Director | Buy | 52,575 | $1.32 | $69399.00 |
| 2024-01-02 | MAHATME, UJWALA | Director | Buy | 35,000 | — | — |
| 2024-01-02 | DUGGAN, ROBERT W | Director, Co-Chief Executive Officer, 10% Owner | Buy | 74,545 | $1.32 | $98399.40 |
| 2024-01-02 | CLARK, KENNETH A | Director | Buy | 70,492 | $1.32 | $93049.44 |
| 2024-01-02 | CLARK, KENNETH A | Director | Buy | 35,000 | — | — |
| 2024-01-02 | CESANO, ALESSANDRA | Director | Buy | 35,000 | — | — |
| 2024-01-02 | CESANO, ALESSANDRA | Director | Buy | 21,363 | $1.32 | $28199.16 |
| 2024-01-02 | BOOTH, ROBERT F. | Director | Buy | 47,651 | $1.32 | $62899.32 |
| 2024-01-02 | BOOTH, ROBERT F. | Director | Buy | 35,000 | — | — |
| 2023-12-13 | DHINGRA, ANKUR | Chief Financial Officer | Buy | 19,700 | $2.17 | $42749.00 |
| 2023-12-13 | DHINGRA, ANKUR | Chief Financial Officer | Buy | 700 | $2.15 | $1505.00 |
| 2023-12-12 | ZANGANEH, MAHKAM | Director, Chief Executive Officer | Buy | 5,000 | $2.07 | $10350.00 |
| 2023-12-11 | ZANGANEH, MAHKAM | Director, Chief Executive Officer | Sale | 489,814 | — | — |
| 2023-12-11 | ZANGANEH, MAHKAM | Director, Chief Executive Officer | Sale | 315,681 | — | — |
| 2023-12-11 | ZANGANEH, MAHKAM | Director, Chief Executive Officer | Buy | 489,814 | $1.44 | $705332.16 |
| 2023-12-11 | ZANGANEH, MAHKAM | Director, Chief Executive Officer | Buy | 315,681 | $1.58 | $498775.98 |
| 2023-10-13 | ZANGANEH, MAHKAM | Director, Chief Executive Officer | Buy | 11,988,198 | — | — |
| 2023-10-13 | SONI, MANMEET SINGH | Director, Chief Operating Officer | Buy | 14,000,000 | — | — |