Zanganeh Mahkam - 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, Zanganeh Mahkam'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.

Zanganeh Mahkam - Insider Non-Derivative Transactions of SMMT Common Stock

Zanganeh Mahkam - 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
Oct 4, 2024	X -- (Common Stock)	315681	1.58	10199776
Sep 12, 2024	Acquisition -- (Common Stock)	44052	22.7	24967852
Mar 28, 2024	P -- (Common Stock)	20000	3.71	50000
Mar 28, 2024	P -- (Common Stock)	26000	3.72	520814
Mar 28, 2024	P -- (Common Stock)	34321	3.72	24923800
Mar 27, 2024	P -- (Common Stock)	30000	3.75	30000
Dec 13, 2023	P -- (Common Stock)	5000	2.07	494814
Dec 12, 2023	X -- (Common Stock)	489814	1.44	489814
Dec 12, 2023	X -- (Common Stock)	315681	1.58	24889479
Mar 9, 2023	P -- (Common Stock)	804672	1.05	1178529
Mar 9, 2023	P -- (Common Stock)	6748629	1.05	9884095
Mar 9, 2023	P -- (Common Stock)	15973743	1.05	23395269
Mar 9, 2023	P -- (Common Stock)	16778415	1.05	24573798