Summit Therapeutics (SMMT.US) Shareholders - Institutional Holders, Major Shareholders & Insiders | Longbridge

Shareholder Type

Individuals & Insiders76.88%
Institutions17.17%
Public companies4.02%
Public and others1.92%
State-owned enterprises<0.01%

Major Shareholders

Major Shareholders Latest
Shareholder
Robert DugganCo-CEO & Executive Chairman	71.94%	573.88M	1.52%	+3.81M	06/12/2026
Mahkam ZanganehCo-CEO, President & Director	4.53%	36.13M	0.11%	+100.00K	06/04/2026
Baker Bros. Advisors LP	4.11%	32.79M	0.58%	-3.60M	06/30/2026
Akeso, Inc.	4.02%	32.06M	0.11%	+0	04/15/2026
FMR LLC	1.26%	10.04M	0.14%	-809.81K	06/30/2026
State Street Investment Management	1.20%	9.54M	0.29%	+2.51M	06/30/2026
BlackRock, Inc.	1.19%	9.53M	0.05%	-124.72K	06/30/2026
Vanguard Capital Management, LLC	0.84%	6.70M	0.02%	+54.87K	06/30/2026
UBS Asset Management AG	0.67%	5.32M	0.18%	+1.56M	06/30/2026
Vanguard Portfolio Management, LLC	0.63%	5.04M	0.04%	-191.06K	06/30/2026
The Goldman Sachs Group, Inc.	0.53%	4.22M	0.50%	+4.03M	06/30/2026
T. Rowe Price Group, Inc.	0.49%	3.89M	0.58%	-4.38M	06/30/2026
Point72 Asset Management, L.P.	0.46%	3.70M	0.36%	+2.91M	06/30/2026
Geode Capital Management, LLC	0.43%	3.43M	<0.01%	+111.41K	06/30/2026
Manmeet SoniCOO, CFO & Director	0.39%	3.12M	<0.01%	+50.00K	06/04/2026
Millennium Management LLC	0.35%	2.78M	0.32%	+2.60M	06/30/2026
Adage Capital Management, L.P.	0.25%	1.99M	--	+1.99M	06/30/2026
Balyasny Asset Management L.P.	0.24%	1.90M	0.17%	+1.36M	06/30/2026
Citadel Advisors LLC	0.22%	1.73M	0.16%	+1.28M	06/30/2026
Aberdeen Group Plc	0.21%	1.69M	0.13%	+1.03M	06/30/2026