SMMT

Summit Therapeutics Inc.

Pharmaceutical PreparationsNasdaqLarge accelerated filer

Total Trades

16

Buys

14

Sells

0

Largest Trade

$1M+

Insiders

6

Institutional Funds

171

Inst. Value

$1M+

Activist Filings

7

Insider Trades

InsiderTitleTypeValueSharesPriceDate
Xia YuDirectorBUY$1M+534K$18.74Oct 24, 2025
DUGGAN ROBERT WCEOBUY$100K–$500K27K$18.74Oct 23, 2025
DUGGAN ROBERT WCEOGRANT$1M+14.2M$18.74Oct 23, 2025
Zanganeh MahkamCEOBUY$100K–$500K27K$18.74Oct 23, 2025
Zanganeh MahkamCEOGRANT$1M+14.2M$18.74Oct 23, 2025
Zanganeh MahkamCEOBUY$1M+338K$17.69Sep 11, 2025
DUGGAN ROBERT WCEOBUY$1M+338K$17.69Sep 11, 2025
Zanganeh MahkamCEOBUY$100K–$500K110K$3.73Mar 28, 2024
Dhingra AnkurCFOBUY$100K–$500K100K$3.75Mar 28, 2024
Soni Manmeet SinghCOOBUY$1M+3.0M$1.68Oct 16, 2023
Zanganeh MahkamCEOBUY$1M+23.5M$1.05Mar 9, 2023
Dhingra AnkurCFOBUY$100K–$500K196K$1.05Mar 8, 2023
DUGGAN ROBERT WCEOBUY$1M+376.5M$1.05Mar 8, 2023
DUGGAN ROBERT WCEOBUY$1M+94.8M$0.97Aug 18, 2022
Zanganeh MakyCo-CEO & PresidentBUY$1M+5.8M$0.97Aug 18, 2022
Dhingra AnkurCFOBUY$15K–$50K36K$0.97Aug 17, 2022
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Activist & 5%+ Owners

SC 13D/13G filings — investors holding 5%+ of outstanding shares

ROBERT W. DUGGAN 2

SC 13D/A · Sep 13, 2024

75.2%

55.6B shares

MAHKAM ZANGANEH

SC 13D/A · Mar 13, 2023

5.3%

36.9M shares

ROBERT W. DUGGAN

SC 13D/A · Feb 16, 2023

78.1%

175.9M shares

Polar Capital Holdings Plc

SC 13G/A · Feb 14, 2023

0.0%

0 shares

ROBERT W. DUGGAN

SC 13D/A · Dec 9, 2022

81.8%

175.9M shares

ROBERT W. DUGGAN

SC 13D/A · Aug 18, 2022

81.2%

166.5M shares

Polar Capital Holdings Plc

SC 13G/A · Feb 14, 2022

6.4%

6.3M shares

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