Summit Therapeutics Inc.

Pharmaceutical Preparations·MIAMI, FL·FY end 12/31·CIK 1599298

Board of Directors

9 members · 1 independent · FY 2025

Director	Role	Tenure	Age	Committees	Indep.	Annual fees
Robert W. Duggan	CEO and Director	7y	81	—	—	—
Mahkam Zanganeh	CEO and Director	6y	55	—	—	—
Manmeet Soni	Director	7y	48	—	—	—
Kenneth A. Clark	Lead Independent Director	5y	67	—		$835,697
Robert Booth	Director	4y	72	—	—	$672,773
Alessandra Cesano	Director	4y	65	—	—	$640,181
Yu (Michelle) Xia	Director	3y	59	—	—	$649,996
Mostafa Ronaghi	Director	2y	57	—	—	$625,486
Jeff Huber	Director	2y	57	—	—	$649,186

10-K Item 1A — YoY changes

Need at least two years of 10-K filings to compute. Will populate once both this year's and last year's 10-Ks have been ingested.

Clawback, anti-hedging, stock ownership, and related-party policies will populate from extracted proxy sections.