DUGGAN ROBERT W - Insider Non-Derivative Transactions at Summit Therapeutics Inc. (SMMT) - (SEC)

Updated on January 3, 2026.

According to recent SEC insider information filed on Oct 21, 2025, DUGGAN ROBERT W's relationship to Summit Therapeutics Inc. (SMMT) is Director,Officer,TenPercentOwner (Co-Chief Executive Officer), and currently has 570,073,879 shares of Common Stock.

The chart below shows the number of shares owned, and the table shows the recent insider transactions.

You can see similar information for other SMMT insiders.

Related Topics: SEC Topic List.

Data Source: SEC.

DUGGAN ROBERT W - Insider Non-Derivative Transactions of SMMT Common Stock

DUGGAN ROBERT W - Insider Non-Derivative Transactions at SMMT

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Date	Transaction	No. of Shares	Price Per Share	Shares Owned After Transactions
Oct 22, 2025	P -- (Common Stock)	26680	18.74	76680
Oct 22, 2025	Acquisition -- (Common Stock)	266808	18.74	25724474
Oct 22, 2025	Acquisition -- (Common Stock)	13980789	18.74	570073879
Sep 12, 2025	P -- (Common Stock)	5000	18.07	556093090
Sep 11, 2025	P -- (Common Stock)	333394	17.68	556088090
May 31, 2025	M -- (Common Stock)	74545	2.64	555754696
Apr 9, 2025	X -- (Common Stock)	3985055	1.58	555680151
Sep 12, 2024	Acquisition -- (Common Stock)	3325991	22.7	551695096
Mar 7, 2023	P -- (Common Stock)	376489880	1.05	552354161