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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: $18.81
Price Change: ▲ Price Increase of +0.44 (2.40%)
As of 12/4/2025 05:00 PM ET

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

Skip Chart and Table DataPrice Data in Insider Trading History Table
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  
3/8/2023Mahkam ZanganehCEOBuy15,973,743$1.05$16,772,430.1523,395,269View SEC Filing Icon  
3/7/2023Ankur DhingraCFOBuy196,362$1.05$206,180.10234,558View SEC Filing Icon  
3/6/2023Robert W. DugganCEOBuy376,489,880$1.05$395,314,374.00552,354,161View SEC Filing Icon  
See Full Table

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.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Summit Therapeutics Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
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
11/14/2025ADAR1 Capital Management LLC102,969$2.13M0.2%-8.1%0.013%Search for SEC Filing on Google Icon
11/14/2025UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC79,589$1.64M0.0%-8.4%0.010%Search for SEC Filing on Google Icon
11/14/2025Two Sigma Investments LP25,030$0.52M0.0%N/A0.003%Search for SEC Filing on Google Icon
11/14/2025Vident Advisory LLC36,646$0.76M0.0%-6.4%0.005%Search for SEC Filing on Google Icon
11/13/2025Invesco Ltd.426,075$8.80M0.0%+0.5%0.055%Search for SEC Filing on Google Icon
11/13/2025Sei Investments Co.27,163$0.56M0.0%+3.3%0.004%Search for SEC Filing on Google Icon
11/13/2025Capital Fund Management S.A.74,153$1.53M0.0%N/A0.010%Search for SEC Filing on Google Icon
11/13/2025BNP Paribas Financial Markets29,176$0.60M0.0%-2.2%0.004%Search for SEC Filing on Google Icon
11/13/2025WINTON GROUP Ltd64,900$1.34M0.1%N/A0.008%Search for SEC Filing on Google Icon
11/13/2025Russell Investments Group Ltd.58,099$1.20M0.0%-71.5%0.008%Search for SEC Filing on Google Icon
11/13/2025Schroder Investment Management Group242,619$5.13M0.0%+67.9%0.031%Search for SEC Filing on Google Icon
11/13/2025Jefferies Financial Group Inc.15,000$0.31M0.0%N/A0.002%Search for SEC Filing on Google Icon
11/13/2025Parallel Advisors LLC1,864$39K0.0%N/A0.000%Search for SEC Filing on Google Icon
11/13/2025First Trust Advisors LP171,524$3.54M0.0%N/A0.022%Search for SEC Filing on Google Icon
11/12/2025Barclays PLC475,777$9.83M0.0%+51.6%0.062%Search for SEC Filing on Google Icon
11/12/2025Orion Porfolio Solutions LLC20,278$0.42M0.0%-61.7%0.003%Search for SEC Filing on Google Icon
11/12/2025Dimensional Fund Advisors LP374,583$7.74M0.0%-1.4%0.049%Search for SEC Filing on Google Icon
11/12/2025Rafferty Asset Management LLC339,176$7.01M0.0%+70.6%0.044%Search for SEC Filing on Google Icon
11/12/2025Quantbot Technologies LP23,381$0.48M0.0%+276.7%0.003%Search for SEC Filing on Google Icon
11/12/2025DNB Asset Management AS30,923$0.64M0.0%-4.2%0.004%Search for SEC Filing on Google Icon
11/10/2025TD Asset Management Inc537,530$11.11M0.0%+11.1%0.070%Search for SEC Filing on Google Icon
11/10/2025AXQ Capital LP17,468$0.36M0.1%N/A0.002%Search for SEC Filing on Google Icon
11/10/2025Citigroup Inc.159,873$3.30M0.0%+41.1%0.021%Search for SEC Filing on Google Icon
11/10/2025China Universal Asset Management Co. Ltd.130,210$2.69M0.2%-12.7%0.017%Search for SEC Filing on Google Icon
11/7/2025Fiera Capital Corp762,094$15.75M0.1%-2.7%0.099%Search for SEC Filing on Google Icon
11/7/2025NEOS Investment Management LLC80,284$1.66M0.0%-24.9%0.010%Search for SEC Filing on Google Icon
11/7/2025Skandinaviska Enskilda Banken AB publ 338,363$6.99M0.0%+409.2%0.044%Search for SEC Filing on Google Icon
11/7/2025Vanguard Group Inc.11,379,728$235.11M0.0%+31.2%1.476%Search for SEC Filing on Google Icon
11/7/2025PNC Financial Services Group Inc.1,790$37K0.0%-32.1%0.000%Search for SEC Filing on Google Icon
11/7/2025GF Fund Management CO. LTD.15,982$0.33M0.0%-15.4%0.002%Search for SEC Filing on Google Icon
11/6/2025Assetmark Inc.29,866$0.62M0.0%-3.9%0.004%Search for SEC Filing on Google Icon
11/6/2025Verde Servicos Internacionais S.A.40,000$0.83M0.2%N/A0.005%Search for SEC Filing on Google Icon
11/6/2025Illinois Municipal Retirement Fund68,673$1.42M0.0%+121.1%0.009%Search for SEC Filing on Google Icon
11/6/2025Profund Advisors LLC69,933$1.45M0.0%+76.4%0.009%Search for SEC Filing on Google Icon
11/6/2025ProShare Advisors LLC26,463$0.55M0.0%-4.6%0.003%Search for SEC Filing on Google Icon
11/5/2025Envestnet Asset Management Inc.92,538$1.91M0.0%-2.1%0.012%Search for SEC Filing on Google Icon
11/4/2025Allianz Asset Management GmbH22,200$0.46M0.0%-25.5%0.003%Search for SEC Filing on Google Icon
11/4/2025Yong Rong HK Asset Management Ltd100,000$2.07M0.6%N/A0.013%Search for SEC Filing on Google Icon
11/3/2025AlphaQuest LLC19,296$0.40M0.0%+227.6%0.003%Search for SEC Filing on Google Icon
11/3/2025New York State Common Retirement Fund264,290$5.46M0.0%+2.9%0.034%Search for SEC Filing on Google Icon
10/30/2025Strs Ohio2,793$58K0.0%-92.4%0.000%Search for SEC Filing on Google Icon
10/29/2025Wealth Enhancement Advisory Services LLC16,411$0.37M0.0%+55.1%0.002%Search for SEC Filing on Google Icon
10/29/2025Amalgamated Bank8,552$0.18M0.0%+7.7%0.001%Search for SEC Filing on Google Icon
10/28/2025APEIRON CAPITAL Ltd1,310,941$27.08M12.9%+9.2%0.176%Search for SEC Filing on Google Icon
10/24/2025Tema Etfs LLC80,284$1.66M0.1%-24.9%0.011%Search for SEC Filing on Google Icon
10/24/2025World Equity Group Inc.18,854$0.39M0.1%+29.4%0.003%Search for SEC Filing on Google Icon
10/24/2025JGP Global Gestao de Recursos Ltda.12,868$0.27M0.2%-16.3%0.002%Search for SEC Filing on Google Icon
10/23/2025SG Americas Securities LLC5,117$0.11M0.0%N/A0.001%Search for SEC Filing on Google Icon
10/21/2025Wealth Management Partners LLC74,570$1.54M0.5%-1.4%0.010%Search for SEC Filing on Google Icon
10/21/2025Crowley Wealth Management Inc.1,500$31K0.0%+66.7%0.000%Search for SEC Filing on Google Icon
10/20/2025Calamos Advisors LLC18,628$0.39M0.0%-19.4%0.003%Search for SEC Filing on Google Icon
10/17/2025Capricorn Fund Managers Ltd496,266$10.25M3.4%N/A0.067%Search for SEC Filing on Google Icon
10/16/2025Griffin Asset Management Inc.140,282$2.90M0.3%+17.5%0.019%Search for SEC Filing on Google Icon
10/16/2025Polianta Ltd74,700$1.54M0.6%+23.3%0.010%Search for SEC Filing on Google Icon
10/14/2025Farther Finance Advisors LLC55,236$1.14M0.0%N/A0.007%Search for SEC Filing on Google Icon
10/9/2025Voya Investment Management LLC202,618$4.19M0.0%-1.5%0.027%Search for SEC Filing on Google Icon
9/4/2025Osaic Holdings Inc.6,064$0.13M0.0%-49.6%0.001%Search for SEC Filing on Google Icon
9/3/2025Q3 Asset Management19,567$0.42M0.1%+18.8%0.003%Search for SEC Filing on Google Icon
8/28/2025China Universal Asset Management Co. Ltd.149,162$3.17M0.3%+0.8%0.020%Search for SEC Filing on Google Icon
8/27/2025Orion Porfolio Solutions LLC52,964$1.13M0.0%+130.6%0.007%Search for SEC Filing on Google Icon
8/15/2025Tower Research Capital LLC TRC 16,044$0.34M0.0%+73.0%0.002%Search for SEC Filing on Google Icon
8/15/2025Florida Financial Advisors LLC15,921$0.34M0.1%+23.0%0.002%Search for SEC Filing on Google Icon
8/15/2025E Fund Management Co. Ltd.22,196$0.47M0.0%-92.5%0.003%Search for SEC Filing on Google Icon
8/15/2025Vident Advisory LLC39,156$0.83M0.0%-4.9%0.005%Search for SEC Filing on Google Icon
8/15/2025Two Sigma Securities LLC13,149$0.28M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/15/2025Snowden Capital Advisors LLC14,915$0.32M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/15/2025Rafferty Asset Management LLC198,853$4.23M0.0%-13.4%0.027%Search for SEC Filing on Google Icon
8/15/2025Oxford Asset Management LLP11,535$0.25M0.1%N/A0.002%Search for SEC Filing on Google Icon
8/15/2025Orion Porfolio Solutions LLC38,064$0.81M0.0%+65.7%0.005%Search for SEC Filing on Google Icon
8/15/2025Man Group plc40,407$0.86M0.0%+112.6%0.005%Search for SEC Filing on Google Icon
8/15/2025HRT Financial LP241,685$5.14M0.0%N/A0.033%Search for SEC Filing on Google Icon
8/15/2025Engineers Gate Manager LP87,830$1.87M0.0%N/A0.012%Search for SEC Filing on Google Icon
8/15/2025BI Asset Management Fondsmaeglerselskab A S125,100$2.66M0.0%N/A0.017%Search for SEC Filing on Google Icon
8/15/2025BNP Paribas Financial Markets29,844$0.64M0.0%-97.3%0.004%Search for SEC Filing on Google Icon
8/15/2025Bellevue Group AG41,738$0.89M0.0%-38.3%0.006%Search for SEC Filing on Google Icon
8/15/2025Brevan Howard Capital Management LP104,660$2.23M0.0%N/A0.014%Search for SEC Filing on Google Icon
8/15/2025Bank of America Corp DE566,147$12.05M0.0%+53.3%0.076%Search for SEC Filing on Google Icon
8/15/2025Ameriprise Financial Inc.32,827$0.70M0.0%-22.5%0.004%Search for SEC Filing on Google Icon
8/14/2025California State Teachers Retirement System7,368$0.16M0.0%+62.3%0.001%Search for SEC Filing on Google Icon
8/14/2025Raymond James Financial Inc.11,692$0.25M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/14/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.10,311$0.21M0.0%-84.2%0.001%Search for SEC Filing on Google Icon
8/14/2025Treasurer of the State of North Carolina54,560$1.16M0.0%N/A0.007%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
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: $18.81
Low: $18.19
High: $18.99

50 Day Range

MA: $19.30
Low: $16.19
High: $23.34

52 Week Range

Now: $18.81
Low: $15.55
High: $36.91

Volume

2,782,157 shs

Average Volume

2,226,085 shs

Market Capitalization

$14.51 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. Ankur Dhingra (CFO)
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. Vanguard Group Inc. — 1.48%
  2. Susquehanna International Group LLP — 0.00%
  3. APEIRON CAPITAL Ltd — 0.18%
  4. Polymer Capital Management HK LTD — 0.11%
  5. Fiera Capital Corp — 0.10%
  6. Polar Capital Holdings Plc — 0.10%
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. Caption Management LLC
  2. Millennium Management LLC
  3. Squarepoint Ops LLC
  4. Polar Capital Holdings Plc
  5. Russell Investments Group Ltd.
  6. Brevan Howard Capital Management LP
  7. Polymer Capital Management HK LTD
  8. Strs Ohio

Which major investors are buying Summit Therapeutics stock?

In the previous quarter, SMMT stock was purchased by institutional investors including:
  1. Vanguard Group Inc.
  2. Capricorn Fund Managers Ltd
  3. Susquehanna International Group LLP
  4. Citadel Advisors LLC
  5. Skandinaviska Enskilda Banken AB publ
  6. First Trust Advisors LP
  7. Barclays PLC
  8. Rafferty Asset 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)
  4. Ankur Dhingra (CFO)
Learn More investors buying Summit Therapeutics stock.