SMMT insider buying
Every open-market purchase of Summit Therapeutics Inc. (SMMT) stock by its officers, directors and major shareholders, from SEC Form 4 filings.
Bought, last 12 months$103.62M
Insiders buying (12m)3
Purchases on record8
Last purchase filedJun 12, 2026
In the last 12 months, 3 insiders of Summit Therapeutics Inc. bought $103.62M of SMMT stock on the open market in 5 reported purchases. The most recent was filed on Jun 12, 2026: Zanganeh Mahkam (Co-Chief Executive Officer, Director, 10% Owner) bought 3,810,000 shares at $13.12, worth $49.99M.
Get the next SMMT insider buy on TelegramFree daily recap of the biggest insider purchases, straight from SEC filings. Real-time alerts for Premium members.
Join free on TelegramAll SMMT insider purchases
| Filed | Insider | Value | Shares | Price | Stake | Trade | |
|---|---|---|---|---|---|---|---|
| Jun 12 | Zanganeh MahkamCo-Chief Executive Officer, Direc… | $49.99M | 3,810,000 | $13.12 | +1% | Jun 12 | SEC |
| Jun 12 | Duggan Robert WCo-Chief Executive Officer, Direc… | $49.99M | 3,810,000 | $13.12 | +1% | Jun 12 | SEC |
| Jun 4 | Soni Manmeet SinghCOO and CFO, Director | $722.25K | 50,000 | $14.45 | +2% | Jun 4 | SEC |
| Jun 4 | Zanganeh MahkamCo-Chief Executive Officer, Direc… | $1.46M | 100,000 | $14.60 | +0% | Jun 4 | SEC |
| Jun 4 | Duggan Robert WCo-Chief Executive Officer, Direc… | $1.46M | 100,000 | $14.60 | +0% | Jun 4 | SEC |
| Oct 23 | Xia YuDirector | $10M | 533,617 | $18.74 | +2% | Oct 21 | SEC |
| Oct 23 | Zanganeh MahkamCo-Chief Executive Officer, Direc… | $499.98K | 26,680 | $18.74 | +53% | Oct 21 | SEC |
| Oct 23 | Duggan Robert WCo-Chief Executive Officer, Direc… | $499.98K | 26,680 | $18.74 | +53% | Oct 21 | SEC |