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Summit Therapeutics
SMMT
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Overview
Overview
Options
Options
News
News
Posts
Posts
Financials
Financials
Forecast
Forecast
Valuation
Valuation
Shareholders
Shareholders
Profile
Profile
All Shareholders
Institutional Holders
Insiders
All Shareholders
Shareholder Type
Individuals & Insiders
79.02%
Institutions
15.61%
Public companies
4.13%
Public and others
1.23%
State-owned enterprises
<0.01%
Major Shareholders
Latest
Major Shareholders Latest
Shareholder
% Held
Shares Held
Change %
Shares Changed
Report Date
Robert Duggan
Co-CEO & Executive Chairman
73.94%
573.88M
0.48%
+3.81M
06/12/2026
Baker Bros. Advisors LP
4.69%
36.39M
<0.01%
+0
03/31/2026
Mahkam Zanganeh
Co-CEO, President & Director
4.66%
36.13M
0.01%
+100.00K
06/04/2026
Akeso, Inc.
4.13%
32.06M
<0.01%
+0
04/15/2026
FMR LLC
1.40%
10.85M
0.32%
-2.51M
03/31/2026
BlackRock, Inc.
1.24%
9.65M
0.04%
+291.84K
03/31/2026
T. Rowe Price Group, Inc.
1.07%
8.28M
0.14%
-1.10M
03/31/2026
State Street Global Advisors, Inc.
0.91%
7.03M
0.05%
+391.80K
03/31/2026
Vanguard Capital Management, LLC
0.74%
5.71M
--
+5.71M
03/31/2026
Vanguard Portfolio Management, LLC
0.67%
5.23M
--
+5.23M
03/31/2026
UBS Asset Management AG
0.48%
3.76M
0.36%
+2.81M
03/31/2026
Geode Capital Management, LLC
0.43%
3.32M
0.02%
+168.37K
03/31/2026
Manmeet Soni
COO, CFO & Director
0.40%
3.12M
<0.01%
+50.00K
06/04/2026
D. E. Shaw & Co., L.P.
0.29%
2.24M
0.24%
+1.83M
03/31/2026
Morgan Stanley
0.20%
1.56M
0.09%
+687.67K
03/31/2026
Norges Bank Investment Management
0.18%
1.37M
<0.01%
+0
12/31/2025
Pictet Asset Management Limited
0.17%
1.32M
<0.01%
-60.60K
03/31/2026
Apeiron Capital Limited
0.17%
1.31M
<0.01%
-100.00
03/31/2026
Two Sigma Investments, LP
0.13%
981.19K
0.05%
+402.94K
03/31/2026
Charles Schwab Investment Management, Inc.
0.12%
960.87K
<0.01%
+0
06/30/2026
