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INBX Insider Trading

Insider Ownership Percentage: 18.26%
Insider Buying (Last 12 Months): $4,499,725.00
Insider Selling (Last 12 Months): $11,456,090.00

Inhibrx Biosciences Insider Trading History Chart

This chart shows the insider buying and selling history at Inhibrx Biosciences by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Inhibrx Biosciences Share Price & Price History

Current Price: $99.61
Price Change: +0.30 (1.20%)
As of 09/25/2026 04:00 PM ET

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

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Inhibrx Biosciences Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
9/23/2026Jon Faiz KayyemDirectorBuy5,000$100.00$500,000.00434,360View SEC Filing Icon  
9/16/2026Jon Faiz KayyemDirectorBuy5,000$100.00$500,000.00429,360View SEC Filing Icon  
9/14/2026Kimberly ManhardDirectorSell500$110.26$55,130.008,000View SEC Filing Icon  
9/11/2026Kimberly ManhardDirectorSell500$111.78$55,890.008,500View SEC Filing Icon  
9/8/2026Douglas ForsythDirectorBuy2,500$114.65$286,625.00227,064View SEC Filing Icon  
9/8/2026Jon Faiz KayyemDirectorBuy5,000$113.52$567,600.00424,360View SEC Filing Icon  
9/8/2026Kimberly ManhardDirectorSell500$115.14$57,570.009,500View SEC Filing Icon  
9/8/2026Mark LappeCEOBuy25,000$105.82$2,645,500.00730,548View SEC Filing Icon  
10/7/2025Global Investors Lp VikingMajor ShareholderSell350,000$32.25$11,287,500.0067,018View SEC Filing Icon  
11/19/2024Jon Faiz KayyemDirectorBuy69,686$14.23$991,631.7851,093View SEC Filing Icon  
9/16/2024Mark LappeCEOBuy13,037$17.13$223,323.81705,548View SEC Filing Icon  
9/12/2024Mark LappeCEOBuy26,963$15.05$405,793.15692,511View SEC Filing Icon  
9/10/2024Kristiina VuoriDirectorBuy179$15.00$2,685.007,319View SEC Filing Icon  
9/9/2024Mark LappeCEOBuy9,500$15.21$144,495.00657,048View SEC Filing Icon  
9/6/2024Mark LappeCEOBuy26,000$15.29$397,540.00647,548View SEC Filing Icon  
9/3/2024Mark LappeCEOBuy20,000$15.81$316,200.00165,000View SEC Filing Icon  
8/29/2024Mark LappeCEOBuy10,000$14.03$140,300.00135,000View SEC Filing Icon  
6/5/2024Jon Faiz KayyemDirectorBuy57,549$17.32$996,748.681,150,410View SEC Filing Icon  
5/28/2024Brendan P. EckelmanInsiderSell300,000$34.30$10,290,000.001,735,553View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for Inhibrx Biosciences (NASDAQ:INBX)

82.46% of Inhibrx Biosciences 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 INBX by year and by quarter.

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

Inhibrx Biosciences Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/9/2026Opaleye Management Inc.20,291$1.92M0.2%N/A0.138%Search for SEC Filing on Google Icon
9/9/2026Tidal Investments LLC10,170$0.96M0.0%N/A0.069%Search for SEC Filing on Google Icon
9/9/2026Integrated Wealth Concepts LLC330$31K0.0%N/A0.002%Search for SEC Filing on Google Icon
9/9/2026Squarepoint Ops LLC6,543$0.62M0.0%-58.2%0.044%Search for SEC Filing on Google Icon
8/27/2026Corient Private Wealth LP28,653$2.72M0.0%-0.6%0.195%Search for SEC Filing on Google Icon
8/26/2026HighTower Advisors LLC870,551$82.49M0.1%+0.0%5.914%Search for SEC Filing on Google Icon
8/20/2026NINE MASTS CAPITAL Ltd3,000$0.28M0.0%N/A0.020%Search for SEC Filing on Google Icon
8/20/2026Harvest Management LLC2,600$0.25M0.1%N/A0.018%Search for SEC Filing on Google Icon
8/19/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC20,067$1.90M0.0%+29,850.7%0.137%Search for SEC Filing on Google Icon
8/19/2026Wellington Management Group LLP21,421$2.03M0.0%-16.9%0.146%Search for SEC Filing on Google Icon
8/18/2026Ratan Capital Management LP16,612$1.57M0.5%N/A0.113%Search for SEC Filing on Google Icon
8/18/2026Jefferies Financial Group Inc.73,416$6.96M0.0%N/A0.500%Search for SEC Filing on Google Icon
8/17/2026Corient Private Wealth LP28,653$2.72M0.0%N/A0.195%Search for SEC Filing on Google Icon
8/17/2026Bank of America Corp DE841,141$79.70M0.0%N/A5.734%Search for SEC Filing on Google Icon
8/15/2026Jupiter Topco LLC3,400$0.32M0.0%N/A0.023%Search for SEC Filing on Google Icon
8/14/2026Nicholas Investment Partners LP21,443$2.03M0.1%N/A0.146%Search for SEC Filing on Google Icon
8/14/2026Parkman Healthcare Partners LLC256,950$24.35M2.5%N/A1.752%Search for SEC Filing on Google Icon
8/14/2026Legal & General Group Plc5,138$0.49M0.0%N/A0.035%Search for SEC Filing on Google Icon
8/14/2026The Manufacturers Life Insurance Company4,206$0.40M0.0%N/A0.029%Search for SEC Filing on Google Icon
8/12/2026Quantbot Technologies LP721$68K0.0%N/A0.005%Search for SEC Filing on Google Icon
8/11/2026Western Standard LLC47,000$4.45M1.5%N/A0.320%Search for SEC Filing on Google Icon
8/10/2026NewEdge Wealth LLC3,507$0.33M0.0%N/A0.024%Search for SEC Filing on Google Icon
8/7/2026NINE MASTS CAPITAL Ltd3,000$0.28M0.0%N/A0.020%Search for SEC Filing on Google Icon
8/7/2026BlackRock Inc.825,972$78.26M0.0%N/A5.630%Search for SEC Filing on Google Icon
8/7/2026Deutsche Bank AG9,579$0.91M0.0%N/A0.065%Search for SEC Filing on Google Icon
8/7/2026Mitsubishi UFJ Asset Management Co. Ltd.2,045$0.19M0.0%N/A0.014%Search for SEC Filing on Google Icon
8/6/2026Bank of New York Mellon Corp26,200$2.48M0.0%N/A0.179%Search for SEC Filing on Google Icon
8/6/2026State of Wyoming1,227$0.12M0.0%N/A0.008%Search for SEC Filing on Google Icon
7/10/2026Tema ETFs LLC10,170$0.96M0.0%N/A0.069%Search for SEC Filing on Google Icon
6/4/2026Seven Fleet Capital Management LP2,482$0.17M0.1%N/A0.017%Search for SEC Filing on Google Icon
5/29/2026Perceptive Advisors LLC1,442,707$96.99M1.9%-0.7%9.834%Search for SEC Filing on Google Icon
5/19/2026Bank of America Corp DE32,683$2.20M0.0%-52.7%0.223%Search for SEC Filing on Google Icon
5/19/2026Janus Henderson Group PLC3,400$0.23M0.0%N/A0.023%Search for SEC Filing on Google Icon
5/16/2026The Manufacturers Life Insurance Company4,228$0.28M0.0%+51.8%0.029%Search for SEC Filing on Google Icon
5/16/2026Quantinno Capital Management LP17,704$1.19M0.0%+76.4%0.121%Search for SEC Filing on Google Icon
5/16/2026SummitTX Capital L.P.137,821$9.27M0.3%+66.3%0.943%Search for SEC Filing on Google Icon
5/14/2026Healthcare of Ontario Pension Plan Trust Fund170,700$11.48M0.0%-35.3%1.168%Search for SEC Filing on Google Icon
5/14/2026Renaissance Technologies LLC50,183$3.37M0.0%-4.6%0.343%Search for SEC Filing on Google Icon
5/7/2026Swiss National Bank14,400$0.97M0.0%N/A0.099%Search for SEC Filing on Google Icon
5/5/2026Bank of New York Mellon Corp25,874$1.74M0.0%-3.3%0.177%Search for SEC Filing on Google Icon
5/4/2026Empirical Financial Services LLC d.b.a. Empirical Wealth Management22,584$1.52M0.0%-1.3%0.155%Search for SEC Filing on Google Icon
4/27/2026Moran Wealth Management LLC3,163$0.21M0.0%N/A0.022%Search for SEC Filing on Google Icon
4/22/2026Janney Montgomery Scott LLC6,406$0.43M0.0%+16.6%0.044%Search for SEC Filing on Google Icon
3/9/2026Corient Private Wealth LLC20,443$1.62M0.0%N/A0.141%Search for SEC Filing on Google Icon
2/19/2026Invesco Ltd.112,396$8.88M0.0%+539.6%0.773%Search for SEC Filing on Google Icon
2/19/2026Corient Private Wealth LLC20,443$1.62M0.0%N/A0.141%Search for SEC Filing on Google Icon
2/18/2026XTX Topco Ltd9,021$0.71M0.0%N/A0.062%Search for SEC Filing on Google Icon
2/18/2026Virtus Investment Advisers LLC3,343$0.26M0.1%N/A0.023%Search for SEC Filing on Google Icon
2/18/2026Wellington Management Group LLP28,393$2.24M0.0%-4.6%0.195%Search for SEC Filing on Google Icon
2/18/2026SummitTX Capital L.P.82,885$6.55M0.2%+53.1%0.570%Search for SEC Filing on Google Icon
2/18/2026Tudor Investment Corp ET AL4,642$0.37M0.0%N/A0.032%Search for SEC Filing on Google Icon
2/18/2026Perceptive Advisors LLC1,452,707$114.76M2.0%+9.4%9.991%Search for SEC Filing on Google Icon
2/18/2026Millennium Management LLC275,917$21.80M0.0%-7.4%1.898%Search for SEC Filing on Google Icon
2/18/2026Bridgeway Capital Management LLC9,000$0.71M0.0%-45.5%0.062%Search for SEC Filing on Google Icon
2/17/2026Viking Global Investors LP1,437,705$113.58M0.3%-19.6%9.888%Search for SEC Filing on Google Icon
2/17/2026Schonfeld Strategic Advisors LLC214,725$16.96M0.1%+120.5%1.477%Search for SEC Filing on Google Icon
2/17/2026AQR Capital Management LLC7,501$0.59M0.0%+25.1%0.052%Search for SEC Filing on Google Icon
2/17/2026Jain Global LLC12,098$0.96M0.0%N/A0.083%Search for SEC Filing on Google Icon
2/17/2026Laird Norton Wetherby Trust Company LLC40,382$3.19M0.1%N/A0.278%Search for SEC Filing on Google Icon
2/17/2026Jump Financial LLC3,504$0.28M0.0%N/A0.024%Search for SEC Filing on Google Icon
2/17/2026Price T Rowe Associates Inc. MD5,334$0.42M0.0%N/A0.037%Search for SEC Filing on Google Icon
2/17/2026Diadema Partners LP1,299$0.10M0.0%N/A0.009%Search for SEC Filing on Google Icon
2/17/2026Russell Investments Group Ltd.20,778$1.64M0.0%-45.5%0.143%Search for SEC Filing on Google Icon
2/17/2026Persistent Asset Partners Ltd346$27K0.0%N/A0.002%Search for SEC Filing on Google Icon
2/17/2026Hurley Capital LLC1,660$0.13M0.1%N/A0.011%Search for SEC Filing on Google Icon
2/16/2026Squarepoint Ops LLC3,398$0.27M0.0%N/A0.023%Search for SEC Filing on Google Icon
2/16/2026Sofinnova Investments Inc.454,657$35.92M1.5%+3.3%3.127%Search for SEC Filing on Google Icon
2/16/2026Mariner LLC12,746$1.01M0.0%-26.5%0.088%Search for SEC Filing on Google Icon
2/16/2026Healthcare of Ontario Pension Plan Trust Fund264,000$20.86M0.0%N/A1.816%Search for SEC Filing on Google Icon
2/16/2026Kennedy Capital Management LLC71,488$5.65M0.1%-55.8%0.492%Search for SEC Filing on Google Icon
2/16/2026Barclays PLC21,879$1.73M0.0%+62.5%0.150%Search for SEC Filing on Google Icon
2/13/2026Marshall Wace LLP29,310$2.32M0.0%+7.6%0.202%Search for SEC Filing on Google Icon
2/13/2026The Manufacturers Life Insurance Company 2,785$0.22M0.0%N/A0.019%Search for SEC Filing on Google Icon
2/13/2026Morgan Stanley1,167,728$92.25M0.0%+163.7%8.031%Search for SEC Filing on Google Icon
2/13/2026Rafferty Asset Management LLC8,582$0.68M0.0%N/A0.059%Search for SEC Filing on Google Icon
2/13/2026Birchview Capital LP3,698$0.29M0.2%-88.3%0.025%Search for SEC Filing on Google Icon
2/13/2026Charles Schwab Investment Management Inc.27,341$2.16M0.0%-1.6%0.188%Search for SEC Filing on Google Icon
2/13/2026State Street Corp374,961$29.62M0.0%+83.9%2.579%Search for SEC Filing on Google Icon
2/13/2026Wells Fargo & Company MN10,813$0.85M0.0%+42.3%0.074%Search for SEC Filing on Google Icon
2/12/2026MetLife Investment Management LLC5,320$0.42M0.0%-28.4%0.037%Search for SEC Filing on Google Icon
2/12/2026Groupe la Francaise15,636$1.24M0.0%-67.0%0.108%Search for SEC Filing on Google Icon
2/12/2026State Board of Administration of Florida Retirement System3,800$0.30M0.0%N/A0.026%Search for SEC Filing on Google Icon
2/12/2026Renaissance Technologies LLC52,600$4.16M0.0%+526.2%0.362%Search for SEC Filing on Google Icon
2/12/2026Nuveen LLC17,090$1.35M0.0%-2.8%0.118%Search for SEC Filing on Google Icon
2/11/2026Janney Montgomery Scott LLC5,495$0.43M0.0%N/A0.038%Search for SEC Filing on Google Icon
2/11/2026Deutsche Bank AG6,638$0.52M0.0%N/A0.046%Search for SEC Filing on Google Icon
2/11/2026Franklin Resources Inc.29,308$2.32M0.0%+70.8%0.202%Search for SEC Filing on Google Icon
2/11/2026Capital Research Global Investors421,575$33.30M0.0%N/A2.899%Search for SEC Filing on Google Icon
2/11/2026Daiwa Securities Group Inc.841$66K0.0%N/A0.006%Search for SEC Filing on Google Icon
2/10/2026Norges Bank133,300$10.53M0.0%N/A0.917%Search for SEC Filing on Google Icon
2/10/2026Intech Investment Management LLC3,242$0.26M0.0%N/A0.022%Search for SEC Filing on Google Icon
2/9/2026Geode Capital Management LLC226,009$17.86M0.0%+1.8%1.554%Search for SEC Filing on Google Icon
2/9/2026Jefferies Financial Group Inc.8,901$0.70M0.0%N/A0.061%Search for SEC Filing on Google Icon
2/6/2026PSP Research LLC6,389$0.51M0.4%N/A0.044%Search for SEC Filing on Google Icon
2/6/2026HighTower Advisors LLC870,507$68.77M0.1%-0.1%5.985%Search for SEC Filing on Google Icon
2/3/2026Ethic Inc.12,971$1.03M0.0%-10.5%0.089%Search for SEC Filing on Google Icon
2/3/2026Credit Industriel ET Commercial8,656$0.68M0.1%-70.1%0.060%Search for SEC Filing on Google Icon
2/3/2026Mitsubishi UFJ Asset Management Co. Ltd.3,101$0.23M0.0%N/A0.021%Search for SEC Filing on Google Icon
1/29/2026UBS Group AG73,699$5.82M0.0%+681.9%0.507%Search for SEC Filing on Google Icon
1/29/2026Vanguard Group Inc.623,084$49.22M0.0%+4.7%4.285%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Inhibrx Biosciences logo
Inhibrx, Inc., a clinical-stage biopharmaceutical company, develops a pipeline of novel biologic therapeutic candidates. The company's therapeutic candidate includes INBRX-101, an alpha-1 antitrypsin (AAT)-Fc fusion protein therapeutic candidate, which is in Phase 1 clinical trials for use in the treatment of patients with AAT deficiency. It also develops INBRX-109, a tetravalent therapeutic candidate targeting death receptor 5, which is in Phase 2 clinical trials to treat cancers, such as chondrosarcoma, mesothelioma, colorectal cancer, ewing sarcoma, and pancreatic adenocarcinoma; and INBRX-106, a hexavalent agonist of OX40 for a range of oncology indications. The company has license and collaboration agreements with 2seventy bio, Inc. and Bristol-Myers Squibb Company. Inhibrx, Inc. was incorporated in 2009 and is headquartered in La Jolla, California.
Read More on Inhibrx Biosciences

Today's Range

Now: $99.61
Low: $98.09
High: $101.29

50 Day Range

MA: $101.24
Low: $79.25
High: $126.70

52 Week Range

Now: $99.61
Low: $28.16
High: $155.29

Volume

158,652 shs

Average Volume

349,952 shs

Market Capitalization

$1.47 billion

P/E Ratio

N/A

Dividend Yield

N/A

Beta

3.66

Who are the company insiders with the largest holdings of Inhibrx Biosciences?

Inhibrx Biosciences' top insider shareholders include:
  1. Jon Faiz Kayyem (Director)
  2. Mark Lappe (CEO)
  3. Brendan P Eckelman (Insider)
  4. Global Investors Lp Viking (Major Shareholder)
  5. Douglas Forsyth (Director)
  6. Kimberly Manhard (Director)
  7. Kristiina Md Vuori (Director)
Learn More about top insider investors at Inhibrx Biosciences.

Who are the major institutional investors of Inhibrx Biosciences?

Inhibrx Biosciences' top institutional shareholders include:
  1. HighTower Advisors LLC — 5.91%
  2. Bank of America Corp DE — 5.73%
  3. BlackRock Inc. — 5.63%
  4. Parkman Healthcare Partners LLC — 1.75%
  5. Jefferies Financial Group Inc. — 0.50%
  6. Western Standard LLC — 0.32%
Learn More about top institutional investors of Inhibrx Biosciences stock.

Which major investors are selling Inhibrx Biosciences stock?

Within the last quarter, INBX stock was sold by these institutional investors:
  1. Squarepoint Ops LLC
  2. Wellington Management Group LLP
  3. Corient Private Wealth LP
In the last year, company insiders that have sold Inhibrx Biosciences company stock include:
  1. Global Investors Lp Viking (Major Shareholder)
  2. Kimberly Manhard (Director)
Learn More investors selling Inhibrx Biosciences stock.

Which major investors are buying Inhibrx Biosciences stock?

During the previous quarter, INBX stock was acquired by institutional investors including:
  1. Bank of America Corp DE
  2. BlackRock Inc.
  3. Parkman Healthcare Partners LLC
  4. Jefferies Financial Group Inc.
  5. Western Standard LLC
  6. Corient Private Wealth LP
  7. Bank of New York Mellon Corp
  8. Nicholas Investment Partners LP
Within the previous year, these company insiders have bought Inhibrx Biosciences stock:
  1. Mark Lappe (CEO)
  2. Jon Faiz Kayyem (Director)
  3. Douglas Forsyth (Director)
Learn More investors buying Inhibrx Biosciences stock.

Inhibrx Biosciences Active Insiders

Mark Lappe
Mark Lappe
CEO
1 recent trades
Jon Faiz Kayyem
Jon Faiz Kayyem
Director
3 recent trades
Kristiina Md Vuori
Kristiina Md Vuori
Director
Douglas Forsyth
Director
1 recent trades
Kimberly Manhard
Director
3 recent trades
Mr. Jeffrey J. Jensen
Mr. Jeffrey J. Jensen
EVP & Chief Clinical Devel. Officer
Brendan P Eckelman
Brendan P Eckelman (Age 47)
Insider
Mr. Mark Paul Lappe
Mr. Mark Paul Lappe
Founder