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YMAB Insider Trading

Notice: This stock is marked as potentially delisted. It may not be actively trading.
Insider Ownership Percentage: 19.70%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $76,904.70

Y-mAbs Therapeutics Insider Trading History Chart

This chart shows the insider buying and selling history at Y-mAbs Therapeutics by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Y-mAbs Therapeutics Share Price & Price History

Current Price: $8.61
Price Change: +0.30 (1.20%)
As of 09/16/2025 01:00 AM ET

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

Skip Chart and Table DataPrice Data in Insider Trading History Table

Y-mAbs Therapeutics Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
3/7/2025Michael J RossiCEOSell3,917$5.20$20,368.40137,083View SEC Filing Icon  
3/7/2025Thomas GadInsiderSell10,810$5.23$56,536.30202,721View SEC Filing Icon  
9/16/2024Thomas GadInsiderSell30,000$12.97$389,100.0067,681View SEC Filing Icon  
9/13/2024Thomas GadInsiderSell65,000$13.47$875,550.0097,681View SEC Filing Icon  
8/26/2024Joris WilmsCOOSell5,000$14.69$73,450.0030,600View SEC Filing Icon  
6/10/2024Gerard BerDirectorSell722$12.00$8,664.001,608View SEC Filing Icon  
6/10/2024Thomas GadInsiderSell35,000$12.03$421,050.00197,681View SEC Filing Icon  
5/31/2024Bo KruseCFOSell31,371$12.07$378,647.97210,877View SEC Filing Icon  
5/23/2024Thomas GadInsiderSell7,351$13.00$95,563.00232,681View SEC Filing Icon  
5/21/2024Thomas GadInsiderSell25,000$12.00$300,000.00240,032View SEC Filing Icon  
3/5/2024Vignesh RajahSVPSell1,711$16.53$28,282.8333,889View SEC Filing Icon  
12/15/2023Thomas GadInsiderSell50,000$6.61$330,500.00265,032View SEC Filing Icon  
12/13/2023Thomas GadInsiderSell50,000$6.58$329,000.00365,032View SEC Filing Icon  
12/11/2023Biotech Aps WgDirectorBuy102,863$7.01$721,069.634,552,778View SEC Filing Icon  
12/7/2023Biotech Aps WgDirectorBuy6,183$6.50$40,189.504,431,412View SEC Filing Icon  
11/29/2023Biotech Aps WgDirectorBuy51,837$5.97$309,466.894,425,229View SEC Filing Icon  
11/27/2023Johan Wedell-WedellsborgDirectorBuy62,516$5.49$343,212.844,342,721View SEC Filing Icon  
11/20/2023Thomas GadInsiderSell75,000$5.30$397,500.00490,032View SEC Filing Icon  
5/15/2023Johan Wedell-WedellsborgDirectorBuy101,740$9.65$981,791.004,280,205View SEC Filing Icon  
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SEC Filings (Institutional Ownership Changes) for Y-mAbs Therapeutics (NASDAQ:YMAB)

70.85% of Y-mAbs 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 YMAB by year and by quarter.

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

Y-mAbs Therapeutics Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/15/2025Tower Research Capital LLC TRC 11,494$52K0.0%+129.0%0.025%Search for SEC Filing on Google Icon
8/15/2025Bridgeway Capital Management LLC55,700$0.25M0.0%+123.7%0.123%Search for SEC Filing on Google Icon
8/15/2025Bank of America Corp DE274,164$1.24M0.0%-2.9%0.603%Search for SEC Filing on Google Icon
8/15/2025Acorn Capital Advisors LLC3,418,995$15.42M10.1%+5.7%7.524%Search for SEC Filing on Google Icon
8/14/2025Nantahala Capital Management LLC351,878$1.59M0.1%N/A0.774%Search for SEC Filing on Google Icon
8/14/2025Jane Street Group LLC60,873$0.28M0.0%N/A0.134%Search for SEC Filing on Google Icon
8/14/2025Raymond James Financial Inc.7,701$35K0.0%N/A0.017%Search for SEC Filing on Google Icon
8/14/2025Federated Hermes Inc.119,425$0.54M0.0%-22.2%0.263%Search for SEC Filing on Google Icon
8/13/2025Jump Financial LLC61,500$0.28M0.0%+61.5%0.135%Search for SEC Filing on Google Icon
8/13/2025Marshall Wace LLP40,181$0.18M0.0%N/A0.088%Search for SEC Filing on Google Icon
8/13/2025Stonepine Capital Management LLC285,300$1.29M1.3%+117.5%0.628%Search for SEC Filing on Google Icon
8/13/2025Invesco Ltd.42,833$0.19M0.0%+31.6%0.094%Search for SEC Filing on Google Icon
8/12/2025XTX Topco Ltd86,440$0.39M0.0%-5.5%0.191%Search for SEC Filing on Google Icon
8/12/2025Rhumbline Advisers68,399$0.31M0.0%+26.9%0.151%Search for SEC Filing on Google Icon
8/12/2025JPMorgan Chase & Co.164,055$0.74M0.0%-33.7%0.362%Search for SEC Filing on Google Icon
8/8/2025Intech Investment Management LLC21,674$98K0.0%-18.8%0.048%Search for SEC Filing on Google Icon
8/7/2025Los Angeles Capital Management LLC10,284$46K0.0%N/A0.023%Search for SEC Filing on Google Icon
7/25/2025CWM LLC7,121$32K0.0%+203.0%0.016%Search for SEC Filing on Google Icon
6/27/2025Goldman Sachs Group Inc.201,776$0.89M0.0%-7.9%0.446%Search for SEC Filing on Google Icon
5/29/2025Rhumbline Advisers53,909$0.24M0.0%+4.8%0.119%Search for SEC Filing on Google Icon
5/28/2025Strs Ohio43,400$0.19M0.0%N/A0.096%Search for SEC Filing on Google Icon
5/19/2025Acorn Capital Advisors LLC3,235,387$14.33M9.3%+13.1%7.145%Search for SEC Filing on Google Icon
5/16/2025Goldman Sachs Group Inc.201,776$0.89M0.0%-7.9%0.446%Search for SEC Filing on Google Icon
5/16/2025Jacobs Levy Equity Management Inc.237,511$1.05M0.0%+58.7%0.525%Search for SEC Filing on Google Icon
5/16/2025AQR Capital Management LLC164,788$0.73M0.0%+869.3%0.364%Search for SEC Filing on Google Icon
5/15/2025Cubist Systematic Strategies LLC155,522$0.69M0.0%+223.9%0.343%Search for SEC Filing on Google Icon
5/14/2025MetLife Investment Management LLC17,076$76K0.0%-22.9%0.038%Search for SEC Filing on Google Icon
5/14/2025Stonepine Capital Management LLC131,160$0.58M0.6%N/A0.290%Search for SEC Filing on Google Icon
5/14/2025Jump Financial LLC38,079$0.17M0.0%+14.1%0.084%Search for SEC Filing on Google Icon
5/14/2025AlphaQuest LLC38,925$0.17M0.0%+43.4%0.086%Search for SEC Filing on Google Icon
5/14/2025EntryPoint Capital LLC12,654$56K0.0%N/A0.028%Search for SEC Filing on Google Icon
5/14/2025Wellington Management Group LLP204,052$0.90M0.0%+53.1%0.451%Search for SEC Filing on Google Icon
5/13/2025Brooklyn Investment Group5,923$26K0.0%+4,563.8%0.013%Search for SEC Filing on Google Icon
5/12/2025Nuveen LLC112,483$0.50M0.0%N/A0.248%Search for SEC Filing on Google Icon
5/12/2025Invesco Ltd.32,547$0.14M0.0%+118.1%0.072%Search for SEC Filing on Google Icon
5/12/2025Connor Clark & Lunn Investment Management Ltd.11,084$49K0.0%N/A0.024%Search for SEC Filing on Google Icon
5/9/2025Deutsche Bank AG28,803$0.13M0.0%-10.7%0.064%Search for SEC Filing on Google Icon
5/9/2025Charles Schwab Investment Management Inc.277,610$1.23M0.0%-2.4%0.613%Search for SEC Filing on Google Icon
5/8/2025XTX Topco Ltd91,454$0.41M0.0%+340.4%0.202%Search for SEC Filing on Google Icon
5/8/2025Federated Hermes Inc.153,453$0.68M0.0%+245.0%0.339%Search for SEC Filing on Google Icon
5/7/2025Corton Capital Inc.12,432$55K0.2%N/A0.027%Search for SEC Filing on Google Icon
5/1/2025Rice Hall James & Associates LLC103,642$0.46M0.0%-4.5%0.229%Search for SEC Filing on Google Icon
4/30/2025Alps Advisors Inc.33,309$0.15M0.0%-8.0%0.074%Search for SEC Filing on Google Icon
4/17/2025Exchange Traded Concepts LLC26,762$0.12M0.0%+107.9%0.059%Search for SEC Filing on Google Icon
4/14/2025Wesbanco Bank Inc.55,000$0.24M0.0%N/A0.122%Search for SEC Filing on Google Icon
4/8/2025Rhumbline Advisers53,909$0.24M0.0%+4.8%0.119%Search for SEC Filing on Google Icon
3/24/2025Wellington Management Group LLP133,263$1.04M0.0%-2.5%0.295%Search for SEC Filing on Google Icon
2/26/2025Infinitum Asset Management LLC155,529$1.22M0.6%N/A0.347%Search for SEC Filing on Google Icon
2/17/2025UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC52,356$0.41M0.0%+17.4%0.117%Search for SEC Filing on Google Icon
2/17/2025Soleus Capital Management L.P.349,982$2.74M0.2%-12.5%0.781%Search for SEC Filing on Google Icon
2/17/2025Squarepoint Ops LLC102,968$0.81M0.0%-33.5%0.230%Search for SEC Filing on Google Icon
2/17/2025Two Sigma Advisers LP73,900$0.58M0.0%-13.1%0.165%Search for SEC Filing on Google Icon
2/17/2025Two Sigma Investments LP88,337$0.69M0.0%+31.6%0.197%Search for SEC Filing on Google Icon
2/17/2025Rafferty Asset Management LLC41,255$0.32M0.0%+17.6%0.092%Search for SEC Filing on Google Icon
2/17/2025ProShare Advisors LLC12,645$99K0.0%N/A0.028%Search for SEC Filing on Google Icon
2/17/2025Paradigm Biocapital Advisors LP4,236,346$33.17M1.2%+3.7%9.458%Search for SEC Filing on Google Icon
2/17/2025Millennium Management LLC35,447$0.28M0.0%-50.5%0.079%Search for SEC Filing on Google Icon
2/17/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.22,818$0.18M0.0%+12.6%0.051%Search for SEC Filing on Google Icon
2/17/2025Deutsche Bank AG32,253$0.25M0.0%+52.2%0.072%Search for SEC Filing on Google Icon
2/17/2025D. E. Shaw & Co. Inc.615,131$4.82M0.0%-21.9%1.373%Search for SEC Filing on Google Icon
2/17/2025Cubist Systematic Strategies LLC48,011$0.38M0.0%N/A0.107%Search for SEC Filing on Google Icon
2/17/2025Bridgeway Capital Management LLC49,900$0.39M0.0%-34.3%0.111%Search for SEC Filing on Google Icon
2/17/2025Bank of America Corp DE127,159$1M0.0%+59.5%0.284%Search for SEC Filing on Google Icon
2/17/2025BNP Paribas Financial Markets4,874$38K0.0%-81.6%0.011%Search for SEC Filing on Google Icon
2/17/2025Acorn Capital Advisors LLC2,861,825$22.41M12.3%N/A6.389%Search for SEC Filing on Google Icon
2/14/2025Caligan Partners LP1,767,982$13.84M3.7%+47.9%3.947%Search for SEC Filing on Google Icon
2/14/2025Jane Street Group LLC33,203$0.26M0.0%-14.7%0.074%Search for SEC Filing on Google Icon
2/14/2025Northern Trust Corp359,223$2.81M0.0%+6.5%0.802%Search for SEC Filing on Google Icon
2/14/2025Boothbay Fund Management LLC693,693$5.43M0.1%+24.4%1.549%Search for SEC Filing on Google Icon
2/14/2025Virtus ETF Advisers LLC35,789$0.28M0.1%+30.9%0.080%Search for SEC Filing on Google Icon
2/14/2025Price T Rowe Associates Inc. MD14,067$0.11M0.0%-37.6%0.031%Search for SEC Filing on Google Icon
2/14/2025Dimensional Fund Advisors LP463,235$3.63M0.0%-3.0%1.034%Search for SEC Filing on Google Icon
2/13/2025Marshall Wace LLP49,225$0.39M0.0%+217.4%0.110%Search for SEC Filing on Google Icon
2/13/2025Jump Financial LLC33,380$0.26M0.0%N/A0.075%Search for SEC Filing on Google Icon
2/13/2025XTX Topco Ltd20,768$0.16M0.0%+83.8%0.046%Search for SEC Filing on Google Icon
2/13/2025Barclays PLC75,862$0.59M0.0%+9.6%0.169%Search for SEC Filing on Google Icon
2/13/2025Renaissance Technologies LLC131,600$1.03M0.0%+371.7%0.294%Search for SEC Filing on Google Icon
2/13/2025Legal & General Group Plc34,942$0.27M0.0%-7.3%0.078%Search for SEC Filing on Google Icon
2/13/2025Wells Fargo & Company MN17,458$0.14M0.0%+54.1%0.039%Search for SEC Filing on Google Icon
2/12/2025ExodusPoint Capital Management LP32,256$0.25M0.0%N/A0.072%Search for SEC Filing on Google Icon
2/12/2025Geode Capital Management LLC822,309$6.44M0.0%+1.1%1.836%Search for SEC Filing on Google Icon
2/12/2025Wellington Management Group LLP133,263$1.04M0.0%-2.5%0.298%Search for SEC Filing on Google Icon
2/12/2025Pictet Asset Management Holding SA756,297$5.92M0.0%+9.9%1.689%Search for SEC Filing on Google Icon
2/12/2025JPMorgan Chase & Co.97,660$0.77M0.0%+221.9%0.218%Search for SEC Filing on Google Icon
2/11/2025Prudential Financial Inc.18,625$0.15M0.0%-39.2%0.042%Search for SEC Filing on Google Icon
2/11/2025Vanguard Group Inc.2,000,022$15.66M0.0%-1.7%4.465%Search for SEC Filing on Google Icon
2/11/2025KLP Kapitalforvaltning AS5,900$46K0.0%N/A0.013%Search for SEC Filing on Google Icon
2/7/2025AlphaQuest LLC27,135$0.21M0.0%+6,911.6%0.061%Search for SEC Filing on Google Icon
2/6/2025Charles Schwab Investment Management Inc.284,540$2.23M0.0%+1.8%0.635%Search for SEC Filing on Google Icon
1/31/2025Principal Financial Group Inc.22,197$0.17M0.0%+9.4%0.050%Search for SEC Filing on Google Icon
1/17/2025SG Americas Securities LLC17,729$0.14M0.0%+30.7%0.040%Search for SEC Filing on Google Icon
12/26/2024JPMorgan Chase & Co.30,335$0.40M0.0%+10.4%0.068%Search for SEC Filing on Google Icon
12/19/2024Principal Financial Group Inc.20,294$0.27M0.0%N/A0.045%Search for SEC Filing on Google Icon
11/19/2024Barclays PLC69,222$0.91M0.0%+433.4%0.155%Search for SEC Filing on Google Icon
11/18/2024Empire Financial Management Company LLC16,000$0.21M0.1%N/A0.036%Search for SEC Filing on Google Icon
11/16/2024Geode Capital Management LLC813,489$10.70M0.0%+6.2%1.816%Search for SEC Filing on Google Icon
11/15/2024Barclays PLC69,222$0.91M0.0%+433.4%0.155%Search for SEC Filing on Google Icon
11/15/2024XTX Topco Ltd11,300$0.15M0.0%-54.1%0.025%Search for SEC Filing on Google Icon
11/15/2024Wellington Management Group LLP136,714$1.80M0.0%-14.8%0.305%Search for SEC Filing on Google Icon
11/15/2024State Street Corp1,209,781$15.91M0.0%+50.4%2.701%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Y-mAbs Therapeutics logo
Y-mAbs Therapeutics, Inc., a commercial-stage biopharmaceutical company, focuses on the development and commercialization of antibody based therapeutic products for the treatment of cancer in the United States and internationally. It offers DANYELZA, a monoclonal antibody in combination with granulocyte-macrophage colony-stimulating factor for the treatment of pediatric patients with relapsed or refractory high-risk neuroblastoma in the bone or bone marrow. The company is also developing DANYELZA for the treatment of patients with second-line relapsed osteosarcoma and is in Phase II clinical study; GD2-SADA, which is in Phase I clinical trial for the treatment of GD2 positive solid tumor; and Omburtamab, a murine monoclonal antibody for the treatment of central nervous system/leptomeningeal metastases from neuroblastoma, as well as SADA PRIT technology platform. In addition, it is engages in the developing of CD38-SADA and GD2-GD3 Vaccine. The company has a license agreement with Memorial Sloan Kettering Cancer Center and Massachusetts Institute of Technology to develop and commercialize licensed products. Y-mAbs Therapeutics, Inc. was incorporated in 2015 and is headquartered in New York, New York.
Read More on Y-mAbs Therapeutics

Today's Range

Now: $8.61
Low: $8.61
High: $8.61

50 Day Range

MA: $8.58
Low: $8.51
High: $8.61

52 Week Range

Now: $8.61
Low: $3.55
High: $16.11

Volume

N/A

Average Volume

676,583 shs

Market Capitalization

$391.24 million

P/E Ratio

N/A

Dividend Yield

N/A

Beta

0.54

Who are the company insiders with the largest holdings of Y-mAbs Therapeutics?

Y-mAbs Therapeutics' top insider shareholders include:
  1. Biotech Aps Wg (Director)
  2. Thomas Gad (Insider)
  3. Bo Kruse (CFO)
  4. Michael J Rossi (CEO)
  5. Vignesh Rajah (SVP)
  6. Joris Wilms (COO)
  7. Gerard Ber (Director)
Learn More about top insider investors at Y-mAbs Therapeutics.