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SMMT Insider Trading

Insider Ownership Percentage: 84.90%
Insider Buying (Last 12 Months): $22,969,460.82
Insider Selling (Last 12 Months): $0.00

Summit Therapeutics Insider Trading History Chart

This chart shows the insider buying and selling history at Summit Therapeutics by year and by quarter.

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Summit Therapeutics Share Price & Price History

Current Price: $18.51
Price Change: ▲ Price Increase of +1.525 (8.98%)
As of 03/31/2026 02:19 PM ET

This chart shows the closing price history over time for SMMT up to the past year.

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Days: 30 | 90 | 365

Summit Therapeutics Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
10/21/2025Mahkam ZanganehCEOBuy26,680$18.74$499,983.2076,680View SEC Filing Icon  
10/21/2025Robert W. DugganCEOBuy26,680$18.74$499,983.2076,680View SEC Filing Icon  
10/21/2025Yu XiaDirectorBuy533,617$18.74$9,999,982.5832,057,147View SEC Filing Icon  
9/11/2025Mahkam ZanganehCEOBuy5,000$18.07$90,350.00556,093,090View SEC Filing Icon  
9/11/2025Robert W. DugganCEOBuy5,000$18.07$90,350.00556,093,090View SEC Filing Icon  
9/10/2025Mahkam ZanganehCEOBuy333,394$17.68$5,894,405.92556,088,090View SEC Filing Icon  
9/10/2025Robert W. DugganCEOBuy333,394$17.68$5,894,405.92556,088,090View SEC Filing Icon  
3/26/2024Ankur DhingraCFOBuy100,000$3.75$375,000.00354,958View SEC Filing Icon  
3/26/2024Mahkam ZanganehCEOBuy30,000$3.75$112,500.0030,000View SEC Filing Icon  
12/13/2023Ankur DhingraCFOBuy20,400$2.17$44,268.00254,958View SEC Filing Icon  
12/12/2023Mahkam ZanganehCEOBuy5,000$2.07$10,350.00494,814View SEC Filing Icon  
10/13/2023Manmeet Singh SoniCOOBuy2,976,190$1.68$4,999,999.202,976,190View SEC Filing Icon  
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SEC Filings (Institutional Ownership Changes) for Summit Therapeutics (NASDAQ:SMMT)

4.61% of Summit Therapeutics stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at SMMT by year and by quarter.

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Summit Therapeutics Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
3/6/2026Hsbc Holdings PLC98,766$1.72M0.0%N/A0.013%Search for SEC Filing on Google Icon
2/19/2026T. Rowe Price Investment Management Inc.1,873$33K0.0%+2,654.4%0.000%Search for SEC Filing on Google Icon
2/19/2026Invesco Ltd.461,301$8.07M0.0%+8.3%0.060%Search for SEC Filing on Google Icon
2/18/2026Vident Advisory LLC35,880$0.63M0.0%-2.1%0.005%Search for SEC Filing on Google Icon
2/18/2026Beacon Pointe Advisors LLC39,611$0.69M0.0%+10.9%0.005%Search for SEC Filing on Google Icon
2/18/2026Virtus Investment Advisers LLC15,141$0.27M0.1%+168.3%0.002%Search for SEC Filing on Google Icon
2/18/2026Tudor Investment Corp ET AL423,084$7.40M0.0%+21.8%0.055%Search for SEC Filing on Google Icon
2/18/2026Readystate Asset Management LP306,184$5.36M0.2%N/A0.040%Search for SEC Filing on Google Icon
2/18/2026Balyasny Asset Management L.P.50,298$0.88M0.0%-74.2%0.007%Search for SEC Filing on Google Icon
2/18/2026Baker BROS. Advisors LP36,391,063$636.48M3.7%+7.9%4.719%Search for SEC Filing on Google Icon
2/17/2026Guggenheim Capital LLC49,798$0.87M0.0%+21.5%0.006%Search for SEC Filing on Google Icon
2/17/2026ADAR1 Capital Management LLC91,869$1.61M0.1%-10.8%0.012%Search for SEC Filing on Google Icon
2/17/2026Schonfeld Strategic Advisors LLC27,304$0.48M0.0%N/A0.004%Search for SEC Filing on Google Icon
2/17/2026AQR Capital Management LLC357,870$6.20M0.0%+90.9%0.046%Search for SEC Filing on Google Icon
2/17/2026Price T Rowe Associates Inc. MD9,371,415$163.91M0.0%+106.5%1.215%Search for SEC Filing on Google Icon
2/17/2026T. Rowe Price Investment Management Inc.1,873$33K0.0%+2,654.4%0.000%Search for SEC Filing on Google Icon
2/17/2026Public Employees Retirement System of Ohio35,158$0.62M0.0%-3.7%0.005%Search for SEC Filing on Google Icon
2/17/2026Russell Investments Group Ltd.16,966$0.30M0.0%-70.8%0.002%Search for SEC Filing on Google Icon
2/17/2026State of Wisconsin Investment Board92,882$1.63M0.0%+1.1%0.012%Search for SEC Filing on Google Icon
2/17/2026Royal Bank of Canada3,196$56K0.0%-98.3%0.000%Search for SEC Filing on Google Icon
2/17/2026Cynosure Group LLC22,070$0.39M0.0%+18.6%0.003%Search for SEC Filing on Google Icon
2/16/2026Squarepoint Ops LLC715,410$12.51M0.0%-7.4%0.093%Search for SEC Filing on Google Icon
2/16/2026Truvestments Capital LLC2,603$46K0.0%+200.2%0.000%Search for SEC Filing on Google Icon
2/16/2026Verition Fund Management LLC228,990$4.01M0.0%+38.3%0.030%Search for SEC Filing on Google Icon
2/16/2026Mariner LLC73,497$1.29M0.0%-7.6%0.010%Search for SEC Filing on Google Icon
2/16/2026Entropy Technologies LP25,162$0.44M0.0%N/A0.003%Search for SEC Filing on Google Icon
2/16/2026Barclays PLC338,390$5.92M0.0%-28.9%0.044%Search for SEC Filing on Google Icon
2/13/2026Kestra Advisory Services LLC1,622$28K0.0%N/A0.000%Search for SEC Filing on Google Icon
2/13/2026The Manufacturers Life Insurance Company 440,953$7.71M0.0%+47.2%0.057%Search for SEC Filing on Google Icon
2/13/2026Hudson Bay Capital Management LP11,440$0.20M0.0%N/A0.001%Search for SEC Filing on Google Icon
2/13/2026Schroder Investment Management Group251,391$4.40M0.0%+3.6%0.033%Search for SEC Filing on Google Icon
2/13/2026Rafferty Asset Management LLC287,810$5.03M0.0%-15.1%0.037%Search for SEC Filing on Google Icon
2/13/2026First Trust Advisors LP28,115$0.49M0.0%-83.6%0.004%Search for SEC Filing on Google Icon
2/13/2026Charles Schwab Investment Management Inc.892,629$15.61M0.0%+1.9%0.116%Search for SEC Filing on Google Icon
2/13/2026State Street Corp6,636,361$116.07M0.0%+4.3%0.861%Search for SEC Filing on Google Icon
2/13/2026Polymer Capital Management HK LTD1,421,155$24.86M3.5%+73.9%0.184%Search for SEC Filing on Google Icon
2/13/2026Wells Fargo & Company MN130,886$2.29M0.0%-32.2%0.017%Search for SEC Filing on Google Icon
2/12/2026Federation des caisses Desjardins du Quebec8,613$0.15M0.0%-7.4%0.001%Search for SEC Filing on Google Icon
2/12/2026Dimensional Fund Advisors LP376,563$6.59M0.0%+0.5%0.049%Search for SEC Filing on Google Icon
2/12/2026Steward Partners Investment Advisory LLC23,045$0.40M0.0%+15.7%0.003%Search for SEC Filing on Google Icon
2/12/2026New York State Common Retirement Fund53,777$0.94M0.0%-79.7%0.007%Search for SEC Filing on Google Icon
2/12/2026Campbell & CO Investment Adviser LLC15,407$0.27M0.0%N/A0.002%Search for SEC Filing on Google Icon
2/12/2026Bank of Montreal Can95,371$1.67M0.0%-2.7%0.012%Search for SEC Filing on Google Icon
2/11/2026Illinois Municipal Retirement Fund99,367$1.74M0.0%+44.7%0.013%Search for SEC Filing on Google Icon
2/11/2026Deutsche Bank AG237,788$4.16M0.0%-11.9%0.031%Search for SEC Filing on Google Icon
2/11/2026Cerity Partners LLC112,878$1.97M0.0%-1.6%0.015%Search for SEC Filing on Google Icon
2/11/2026LPL Financial LLC13,160$0.23M0.0%-42.3%0.002%Search for SEC Filing on Google Icon
2/11/2026Havemeyer Place LP6,254$0.11M0.0%N/A0.001%Search for SEC Filing on Google Icon
2/11/2026Daiwa Securities Group Inc.2,157$38K0.0%-83.0%0.000%Search for SEC Filing on Google Icon
2/11/2026State of Wyoming11,533$0.20M0.0%N/A0.001%Search for SEC Filing on Google Icon
2/10/2026TD Asset Management Inc1,205,272$21.08M0.0%+124.2%0.156%Search for SEC Filing on Google Icon
2/10/2026CIBC Asset Management Inc24,289$0.43M0.0%+9.8%0.003%Search for SEC Filing on Google Icon
2/10/2026Goldman Sachs Group Inc.485,566$8.49M0.0%-2.4%0.063%Search for SEC Filing on Google Icon
2/10/2026AXQ Capital LP81,519$1.43M0.3%+366.7%0.011%Search for SEC Filing on Google Icon
2/10/2026Norges Bank1,373,943$24.03M0.0%N/A0.178%Search for SEC Filing on Google Icon
2/10/2026Eurizon Capital SGR S.p.A.25,662$0.45M0.0%N/A0.003%Search for SEC Filing on Google Icon
2/9/2026Geode Capital Management LLC3,147,480$55.06M0.0%+0.5%0.408%Search for SEC Filing on Google Icon
2/9/2026Sectoral Asset Management Inc.79,625$1.39M1.1%+7.5%0.010%Search for SEC Filing on Google Icon
2/9/2026Jefferies Financial Group Inc.100,000$1.75M0.0%+566.7%0.013%Search for SEC Filing on Google Icon
2/6/2026Griffin Asset Management Inc.195,547$3.42M0.4%+39.4%0.025%Search for SEC Filing on Google Icon
2/6/2026Handelsbanken Fonder AB37,600$0.66M0.0%+9.9%0.005%Search for SEC Filing on Google Icon
2/6/2026Capstone Capital Management Ltd28,190$0.49M0.5%N/A0.004%Search for SEC Filing on Google Icon
2/6/2026Profund Advisors LLC103,761$1.82M0.1%+48.4%0.013%Search for SEC Filing on Google Icon
2/6/2026ProShare Advisors LLC32,881$0.58M0.0%+24.3%0.004%Search for SEC Filing on Google Icon
2/5/2026DNB Asset Management AS61,061$1.07M0.0%+97.5%0.008%Search for SEC Filing on Google Icon
2/2/2026APEIRON CAPITAL Ltd1,309,241$22.90M26.5%-0.1%0.170%Search for SEC Filing on Google Icon
1/30/2026Levin Capital Strategies L.P.37,676$0.66M0.1%+2.7%0.005%Search for SEC Filing on Google Icon
1/29/2026Pictet Asset Management Holding SA1,383,775$24.38M0.0%-13.7%0.179%Search for SEC Filing on Google Icon
1/29/2026UBS Group AG870,719$15.23M0.0%-36.2%0.113%Search for SEC Filing on Google Icon
1/29/2026Vanguard Group Inc.11,177,220$195.49M0.0%-1.8%1.449%Search for SEC Filing on Google Icon
1/29/2026China Universal Asset Management Co. Ltd.121,307$2.12M0.2%-6.8%0.016%Search for SEC Filing on Google Icon
1/27/2026GF Fund Management CO. LTD.14,629$0.26M0.0%-8.5%0.002%Search for SEC Filing on Google Icon
1/26/2026Mirae Asset Global Investments Co. Ltd.37,991$0.66M0.0%+24.2%0.005%Search for SEC Filing on Google Icon
1/23/2026Farther Finance Advisors LLC57,282$1M0.0%+3.7%0.007%Search for SEC Filing on Google Icon
1/16/2026Aberdeen Group plc927,171$16.22M0.0%-18.6%0.120%Search for SEC Filing on Google Icon
1/16/2026Tema Etfs LLC95,782$1.68M0.1%+19.3%0.012%Search for SEC Filing on Google Icon
1/12/2026Wealth Management Partners LLC59,430$1.04M0.3%-20.3%0.008%Search for SEC Filing on Google Icon
1/9/2026SG Americas Securities LLC15,589$0.27M0.0%+204.7%0.002%Search for SEC Filing on Google Icon
1/9/2026Assenagon Asset Management S.A.59,621$1.04M0.0%N/A0.008%Search for SEC Filing on Google Icon
1/8/2026Wealth Enhancement Advisory Services LLC20,875$0.39M0.0%+27.2%0.003%Search for SEC Filing on Google Icon
1/1/2026Tudor Investment Corp ET AL347,241$7.17M0.0%N/A0.045%Search for SEC Filing on Google Icon
12/9/2025Tudor Investment Corp ET AL347,241$7.17M0.0%N/A0.045%Search for SEC Filing on Google Icon
11/17/2025Woodline Partners LP214,507$4.43M0.0%+17.9%0.028%Search for SEC Filing on Google Icon
11/17/2025Dark Forest Capital Management LP112,199$2.32M0.1%N/A0.015%Search for SEC Filing on Google Icon
11/17/2025Verition Fund Management LLC165,602$3.42M0.0%-9.0%0.021%Search for SEC Filing on Google Icon
11/17/2025Polar Capital Holdings Plc746,393$15.42M0.1%-25.4%0.097%Search for SEC Filing on Google Icon
11/17/2025Polymer Capital Management HK LTD817,276$16.89M2.3%-8.2%0.106%Search for SEC Filing on Google Icon
11/17/2025Mariner LLC79,572$1.64M0.0%+576.5%0.010%Search for SEC Filing on Google Icon
11/17/2025Millennium Management LLC120,514$2.49M0.0%-80.2%0.016%Search for SEC Filing on Google Icon
11/17/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.17,996$0.38M0.0%+74.5%0.002%Search for SEC Filing on Google Icon
11/17/2025Focus Partners Wealth88,419$1.83M0.0%+2.3%0.011%Search for SEC Filing on Google Icon
11/17/2025Brevan Howard Capital Management LP11,351$0.24M0.0%-89.2%0.001%Search for SEC Filing on Google Icon
11/17/2025Bank of America Corp DE657,313$13.58M0.0%+16.1%0.085%Search for SEC Filing on Google Icon
11/17/2025Alliancebernstein L.P.20,223$0.42M0.0%+15.6%0.003%Search for SEC Filing on Google Icon
11/17/2025Ameriprise Financial Inc.53,512$1.11M0.0%+63.0%0.007%Search for SEC Filing on Google Icon
11/14/2025Creative Planning15,490$0.32M0.0%-27.6%0.002%Search for SEC Filing on Google Icon
11/14/2025Raymond James Financial Inc.14,108$0.29M0.0%+20.7%0.002%Search for SEC Filing on Google Icon
11/14/2025Bellevue Group AG18,982$0.39M0.0%-54.5%0.002%Search for SEC Filing on Google Icon
11/14/2025Amundi13,999$0.31M0.0%+22.7%0.002%Search for SEC Filing on Google Icon
11/14/2025Man Group plc29,550$0.61M0.0%-26.9%0.004%Search for SEC Filing on Google Icon
Data available starting January 2016

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Summit Therapeutics logo
Summit Therapeutics Inc., a biopharmaceutical company, focuses on discovery, development, and commercialization of patient, physician, caregiver, and societal friendly medicinal therapies in the United States, and the United Kingdom. The company's lead development candidate is Ivonescimab, a bispecific antibody for immunotherapy through blockade of PD-1 with the anti-angiogenesis; and anti-infectives portfolio includes SMT-738, a novel class of precision antibiotics for the treatment of multidrug resistant infections, which primarily includes carbapenem-resistant Enterobacteriaceae infections. It has a collaboration and license agreement with Akeso, Inc. and its affiliates to develop and commercialize ivonescimab, as well as strategic collaboration with The University of Texas MD Anderson Cancer Center for the purpose of accelerating the development of ivonescimab. The company was founded in 2003 and is headquartered in Miami, Florida.
Read More on Summit Therapeutics

Today's Range

Now: $18.51
Low: $17.20
High: $18.64

50 Day Range

MA: $15.71
Low: $13.85
High: $17.94

52 Week Range

Now: $18.51
Low: $13.83
High: $36.91

Volume

1,597,246 shs

Average Volume

2,669,151 shs

Market Capitalization

$14.35 billion

P/E Ratio

N/A

Dividend Yield

N/A

Beta

N/A

Who are the company insiders with the largest holdings of Summit Therapeutics?

Summit Therapeutics' top insider investors include:
  1. Mahkam Zanganeh (CEO)
  2. Robert W Duggan (CEO)
  3. Yu Xia (Director)
  4. Manmeet Singh Soni (COO)
  5. Ankur Dhingra (CFO)
  6. David Jonathan Powell (Insider)
  7. Maky Zanganeh (COO)
Learn More about top insider investors at Summit Therapeutics.

Who are the major institutional investors of Summit Therapeutics?

Summit Therapeutics' top institutional shareholders include:
  1. Baker BROS. Advisors LP — 4.72%
  2. Vanguard Group Inc. — 1.45%
  3. Price T Rowe Associates Inc. MD — 1.22%
  4. State Street Corp — 0.86%
  5. Geode Capital Management LLC — 0.41%
  6. Polymer Capital Management HK LTD — 0.18%
Learn More about top institutional investors of Summit Therapeutics stock.

Which major investors are selling Summit Therapeutics stock?

During the previous quarter, SMMT stock was sold by these institutional investors:
  1. UBS Group AG
  2. Pictet Asset Management Holding SA
  3. Aberdeen Group plc
  4. New York State Common Retirement Fund
  5. Vanguard Group Inc.
  6. Royal Bank of Canada
  7. Balyasny Asset Management L.P.
  8. First Trust Advisors LP

Which major investors are buying Summit Therapeutics stock?

In the previous quarter, SMMT stock was purchased by institutional investors including:
  1. Price T Rowe Associates Inc. MD
  2. Baker BROS. Advisors LP
  3. Norges Bank
  4. TD Asset Management Inc
  5. Polymer Capital Management HK LTD
  6. Readystate Asset Management LP
  7. State Street Corp
  8. AQR Capital Management LLC
Within the last year, these company insiders have bought Summit Therapeutics stock:
  1. Mahkam Zanganeh (CEO)
  2. Robert W Duggan (CEO)
  3. Yu Xia (Director)
Learn More investors buying Summit Therapeutics stock.

Summit Therapeutics Active Insiders

Robert W Duggan
Robert W Duggan (Age 82)
CEO
1 recent trades
Mahkam Zanganeh
Mahkam Zanganeh (Age 56)
CEO
1 recent trades
Maky Zanganeh
Maky Zanganeh
COO
1 recent trades
Ankur Dhingra
Ankur Dhingra (Age 50)
CFO
Yu Xia
Yu Xia
Director
1 recent trades