SMMT
Summit Therapeutics Inc
$52.17M
Cluster buy
Discretionary Insider Activity
Date:
06/04/2026
Insiders:
Zanganeh Mahkam, director, and 2 others
Prior trend:
23 months of no clear discretionary insider activity

Summary

A $52.17M cluster buy for Summit Therapeutics Inc (SMMT) on 06/04/2026 after 23 months of no clear discretionary insider activity trend.

Reports

Action Amount Date Insider Role(s) SEC Filing No
Buy $1.46M 06/04/2026 Zanganeh Mahkam Director, Co-Chief Executive Officer, a 10%+ owner 0001507650-26-000005
Buy $722K 06/04/2026 Soni Manmeet Singh Director, COO and CFO 0001569769-26-000004
Buy $49.99M 06/12/2026 DUGGAN ROBERT W Director, Co-Chief Executive Officer, a 10%+ owner 0001055919-26-000007

Stake Changes

Action Insider Role(s) Total Change % Change
Buy Zanganeh Mahkam Director, Co-Chief Executive Officer, a 10%+ owner $1.46M 0.4%
Buy Soni Manmeet Singh Director, COO and CFO $722K 1.6%
Buy DUGGAN ROBERT W Director, Co-Chief Executive Officer, a 10%+ owner $49.99M 0.7%

Transactions

Action Amount Date Insider Security Type SEC Code
Buy $1.46M 06/04/2026 Zanganeh Mahkam Common Stock Discretionary Purchase
Buy $362K 06/04/2026 Soni Manmeet Singh Common Stock Discretionary Purchase
Buy $361K 06/04/2026 Soni Manmeet Singh Common Stock Discretionary Purchase
Buy $49.99M 06/12/2026 DUGGAN ROBERT W Common Stock Discretionary Purchase

Stats

Prior max multiple:
8.7
Prior median multiple:
8.7

Metadata

Signal ID:
7lAT4GeqXaPH9MAA
Scanned on:
06/12/2026
Status:
Current