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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
Robert W. DugganCo-Chief Executive Officer2025-09-115,000$18.07
$90.35kBuy
Mahkam ZanganehCo-Chief Executive Officer2025-09-115,000$18.07
$90.35kBuy
Mahkam ZanganehCo-Chief Executive Officer2025-09-10333,394$17.68
$5.89MBuy
Robert W. DugganCo-Chief Executive Officer2025-09-10333,394$17.68
$5.89MBuy
Mahkam ZanganehCo-Chief Executive Officer2025-05-3074,545$2.64
$196.80kBuy
Robert W. DugganCo-Chief Executive Officer2025-05-3074,545$2.64
$196.80kBuy
Robert W. DugganCo-Chief Executive Officer2025-04-083,985,055$1.58
$6.30MBuy
Mahkam ZanganehCo-Chief Executive Officer2025-04-083,985,055$1.58
$6.30MBuy
Mahkam ZanganehCo-Chief Executive Officer2024-10-03315,681$1.58
$498.78kBuy

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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 Zanganeh84.31%626,289,425$11.35BInsider
Robert W. Duggan79.67%591,831,532$10.72BInsider
Baker Bros Advisors LP4.54%33,722,974$611.06MInstitution
Yu Xia2.90%21,523,530$390.01MInsider
Maky Zanganeh2.01%14,915,775$270.27MInsider
Fmr LLC1.24%9,226,376$167.18MInstitution
Vanguard Group Inc1.17%8,673,672$157.17MInstitution
Blackrock Inc0.92%6,846,667$124.06MInstitution
State Street Corp0.54%4,017,697$72.80MInstitution
Price T Rowe Associates Inc0.53%3,905,148$70.76MInstitution

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SMMT vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
SMMT7.22%92.78%Net BuyingNet Buying
ASND100.00%0.00%
EXEL94.53%5.32%Net Selling
BMRN95.96%1.74%Net Selling
ROIV42.84%57.16%Net SellingNet Selling
View Top Biotech Stocks

Summit Therapeutics Stock Ownership FAQ

Who owns Summit Therapeutics?

Summit Therapeutics (NASDAQ: SMMT) is owned by 13.17% institutional shareholders, 169.37% Summit Therapeutics insiders, and 0.00% retail investors. Mahkam Zanganeh is the largest individual Summit Therapeutics shareholder, owning 626.29M shares representing 84.31% of the company. Mahkam Zanganeh's Summit Therapeutics shares are currently valued at $11.33B.

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