Mahkam Zanganeh - Co-Chief Executive Officer, Director, 10%+ Owner at Summit Therapeutics Inc.

Issuer-level insider activity

Role: Co-Chief Executive Officer, Director, 10%+ Owner
Issuer ticker: SMMT on Nasdaq
Entity type: Individual
Source filing history: Open source filing history

Past-year transaction volume for Mahkam Zanganeh in Summit Therapeutics Inc.

Buys

Open market

Shares: +3,936,680
Avg price: $13.20
Total value: +$51,947,183

Sells

Open market

Shares
Avg price
Total value

Net

Past year

Shares: +3,936,680
Share %: 100%
Total value: +$51,947,183

Reported holdings for Mahkam Zanganeh in Summit Therapeutics Inc.

Form 4 holding Co-Chief Executive Officer, Director, 10%+ Owner

Summit Therapeutics Inc.

Security class: Common Stock
Shares / value: 573,883,879
Estimated value: $7,529,356,492
Report date: 12 Jun 2026
Price: $13.12
Ownership: By Spouse

Form 4 holding Co-Chief Executive Officer, Director, 10%+ Owner

Summit Therapeutics Inc.

Security class: Common Stock
Shares / value: 25,824,474
Estimated value: $489,632,027
Report date: 12 Jun 2026
Price: $18.96
Ownership: By the Mahkam Zanganeh Revocable Trust, with the Reporting Person as Trustee

Form 4 holding Co-Chief Executive Officer, Director, 10%+ Owner

Summit Therapeutics Inc.

Security class: Common Stock
Shares / value: 10,199,776
Estimated value: $193,387,752
Report date: 12 Jun 2026
Price: $18.96
Ownership: By the Shaun Zanganeh Irrevocable Trust, with the Reporting Person as Trustee

Form 4 holding Co-Chief Executive Officer, Director, 10%+ Owner

Summit Therapeutics Inc.

Security class: Common Stock
Shares / value: 76,680
Estimated value: $1,453,852
Report date: 12 Jun 2026
Price: $18.96
Ownership: Immediate family member

Form 4 holding Co-Chief Executive Officer, Director, 10%+ Owner

Summit Therapeutics Inc.

Security class: Common Stock
Shares / value: 31,000
Estimated value: $587,760
Report date: 12 Jun 2026
Price: $18.96
Ownership: Direct

Form 4 holding Co-Chief Executive Officer, Director, 10%+ Owner

Summit Therapeutics Inc.

Security class: Stock Option (right to buy)
Shares / value: 11,232
Estimated value: $98,392
Report date: 02 Jan 2026
Price: $8.76
Ownership: By Spouse
Underlying class: Common Stock
Underlying amount

Form 4 holding Co-Chief Executive Officer, Director, 10%+ Owner

Summit Therapeutics Inc.

Security class: Stock Option (right to buy)
Shares / value: 9,590,558
Estimated value
Report date: 29 Apr 2025
Price
Ownership: Direct
Underlying class: Common Stock
Underlying amount

Form 4 holding Co-Chief Executive Officer, Director, 10%+ Owner

Summit Therapeutics Inc.

Security class: Warrant (right to buy)
Shares / value: 0
Estimated value
Report date: 08 Apr 2025
Price
Ownership: By Spouse
Underlying class: Common Stock
Underlying amount: 3,985,055

Transaction history for Mahkam Zanganeh in Summit Therapeutics Inc.

Sym	Class	Transaction	%	SEC-reported value	SEC-reported price	Shares	Shares after	Date	Ownership

^* marks a reported price that did not pass the local price check.

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