Summit Therapeutics Inc

NAS:SMMTHealthcareNASDAQ:NBINASDAQ:NQUSMG

——At close · Market cap — · Next earnings Wed 11 Nov

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Summit Therapeutics Inc · Ownership · TradingHolo

Insider activity

Open-market trades from Form 4 filings

Insiders bought $114.26M and sold $0 in the filings shown.

Date	Name	Role	Type	Shares	Value
Thu, 8 Oct 2026	Anand Bhaskar	officer: Chief Accounting Officer	A-Award	100,000	$0
Fri, 12 Jun 2026	DUGGAN ROBERT W	director, officer, 10 percent owner: Co-Chief Executive Officer	P-Purchase	3,810,000	$49.99M
Fri, 12 Jun 2026	Zanganeh Mahkam	director, officer, 10 percent owner: Co-Chief Executive Officer	P-Purchase	3,810,000	$49.99M
Thu, 4 Jun 2026	DUGGAN ROBERT W	director, officer, 10 percent owner: Co-Chief Executive Officer	P-Purchase	100,000	$1.46M
Thu, 4 Jun 2026	Zanganeh Mahkam	director, officer, 10 percent owner: Co-Chief Executive Officer	P-Purchase	100,000	$1.46M
Thu, 4 Jun 2026	Soni Manmeet Singh	director, officer: COO and CFO	P-Purchase	25,000	$361.5K
Tue, 21 Oct 2025	DUGGAN ROBERT W	director, officer, 10 percent owner: Co-Chief Executive Officer	A-Award	13,980,789	$262M
Tue, 21 Oct 2025	DUGGAN ROBERT W	director, officer, 10 percent owner: Co-Chief Executive Officer	P-Purchase	26,680	$499.98K
Tue, 21 Oct 2025	DUGGAN ROBERT W	director, officer, 10 percent owner: Co-Chief Executive Officer	A-Award	266,808	$5M
Tue, 21 Oct 2025	Zanganeh Mahkam	director, officer, 10 percent owner: Co-Chief Executive Officer	A-Award	13,980,789	$262M
Tue, 21 Oct 2025	Zanganeh Mahkam	director, officer, 10 percent owner: Co-Chief Executive Officer	P-Purchase	26,680	$499.98K
Tue, 21 Oct 2025	Zanganeh Mahkam	director, officer, 10 percent owner: Co-Chief Executive Officer	A-Award	266,808	$5M
Tue, 21 Oct 2025	Soni Manmeet Singh	director, officer: COO and CFO	A-Award	53,361	$999.99K
Tue, 21 Oct 2025	Anand Bhaskar	officer: Chief Accounting Officer	A-Award	26,680	$499.98K
Tue, 21 Oct 2025	Xia Yu	director	P-Purchase	533,617	$10M

Institutional holders

From 13F filings · Tue, 30 Jun 2026

Holder	Shares	% out	Change
BAKER BROS. ADVISORS LP	32,786,348	4.1%	−3,604,715
FMR LLC	10,043,947	1.3%	−809,252
STATE STREET CORP	9,536,796	1.2%	+2,508,636
BlackRock, Inc.	9,529,041	1.2%	−124,717
VANGUARD CAPITAL MANAGEMENT LLC	5,734,484	0.7%	+22,682
UBS Group AG	5,233,798	0.7%	+1,553,483
VANGUARD PORTFOLIO MANAGEMENT LLC	5,042,190	0.6%	−191,062
GOLDMAN SACHS GROUP INC	4,513,399	0.6%	+4,202,671
Point72 Asset Management, L.P.	3,697,803	0.5%	+2,913,617
GEODE CAPITAL MANAGEMENT, LLC	3,427,263	0.4%	+111,409
MILLENNIUM MANAGEMENT LLC	2,349,081	0.3%	+2,222,808
ADAGE CAPITAL PARTNERS GP, L.L.C.	1,989,591	0.2%	—
Balyasny Asset Management L.P.	1,904,254	0.2%	+1,355,919
CITADEL ADVISORS LLC