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NASDAQ: SMMT
Summit Therapeutics Inc Stock Ownership - Who owns Summit Therapeutics?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Summit Therapeutics Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Mahkam ZanganehCo-Chief Executive Officer2025-10-2113,980,789$18.74
$262.00MBuy
Robert W. DugganCo-Chief Executive Officer2025-10-2113,980,789$18.74
$262.00MBuy
Robert W. DugganCo-Chief Executive Officer2025-10-21266,808$18.74
$5.00MBuy
Robert W. DugganCo-Chief Executive Officer2025-10-2126,680$18.74
$499.98kBuy
Manmeet Singh SoniCOO and CFO2025-10-2153,361$18.74
$999.99kBuy
Yu XiaDirector2025-10-21533,617$18.74
$10.00MBuy
Mahkam ZanganehCo-Chief Executive Officer2025-10-21266,808$18.74
$5.00MBuy
Mahkam ZanganehCo-Chief Executive Officer2025-10-2126,680$18.74
$499.98kBuy
Bhaskar AnandChief Accounting Officer2025-10-2126,680$18.74
$499.98kBuy
Mahkam ZanganehCo-Chief Executive Officer2025-09-115,000$18.07
$90.35kBuy

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Net Insider Buy/Sell (L12M) Ownership

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SMMT Shareholders

What type of owners hold Summit Therapeutics Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Mahkam Zanganeh86.05%640,563,702$10.21BInsider
Robert W. Duggan81.42%606,105,809$9.66BInsider
Baker Bros Advisors LP4.89%36,391,063$580.07MInstitution
Yu Xia4.31%32,057,147$510.99MInsider
Maky Zanganeh2.00%14,915,775$237.76MInsider
Fmr LLC1.79%13,360,807$212.97MInstitution
Vanguard Group Inc1.50%11,177,220$178.16MInstitution
Price T Rowe Associates Inc1.26%9,371,415$149.38MInstitution
Blackrock Inc1.26%9,361,921$149.23MInstitution
State Street Corp0.89%6,636,361$105.78MInstitution

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SMMT vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
SMMT8.32%91.68%Net Buying
BMRN96.73%1.74%Net SellingNet Selling
EXEL94.74%5.26%Net SellingNet Selling
RNA89.02%10.98%Net SellingNet Selling
BBIO64.21%35.79%Net SellingNet Selling
View Top Biotech Stocks

Summit Therapeutics Stock Ownership FAQ

Who owns Summit Therapeutics?

Summit Therapeutics (NASDAQ: SMMT) is owned by 15.81% institutional shareholders, 174.27% Summit Therapeutics insiders, and 0.00% retail investors. Mahkam Zanganeh is the largest individual Summit Therapeutics shareholder, owning 640.56M shares representing 86.05% of the company. Mahkam Zanganeh's Summit Therapeutics shares are currently valued at $10.21B.

If you're new to stock investing, here's how to buy Summit Therapeutics stock.
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