CTSO Insider Trading

Insider Ownership Percentage: 7.30%
Insider Buying (Last 12 Months): $29,313.07
Insider Selling (Last 12 Months): $0.00

Cytosorbents Insider Trading History Chart

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

Skip ChartChart Data in Insider Trading History Table

Cytosorbents Share Price & Price History

Current Price: $1.22
Price Change: Price Increase of +0.13 (11.93%)
As of 06/16/2025 05:00 PM ET

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

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

Cytosorbents Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
12/13/2024Peter J MarianiCFOBuy20,000$0.96$19,200.00401,363View SEC Filing Icon  
12/11/2024Peter J MarianiCFOBuy11,363$0.89$10,113.07361,363View SEC Filing Icon  
12/13/2023Alan D SobelDirectorBuy22,557$1.33$30,000.81101,857View SEC Filing Icon  
8/7/2023Michael G BatorDirectorBuy2,000$3.17$6,340.0087,800View SEC Filing Icon  
8/4/2023Michael G BatorDirectorBuy1,000$3.23$3,230.0085,800View SEC Filing Icon  
5/25/2023Kathleen P. BlochCFOBuy3,300$2.85$9,405.0047,000View SEC Filing Icon  
5/10/2023Kathleen P. BlochCFOBuy10,000$3.11$31,100.0043,700View SEC Filing Icon  
12/8/2022Phillip P. ChanCEOBuy5,859$1.26$7,382.34897,279View SEC Filing Icon  
12/6/2022Phillip P. ChanCEOBuy14,291$1.26$18,006.66881,570View SEC Filing Icon  
9/8/2022Phillip P. ChanCEOBuy35,000$1.70$59,500.00867,279View SEC Filing Icon  
8/25/2022Jiny KimDirectorBuy1,000$1.91$1,910.0070,300View SEC Filing Icon  
6/21/2022Vincent CapponiCOOBuy2,000$1.80$3,600.00443,545View SEC Filing Icon  
6/16/2022Phillip P. ChanCEOBuy2,221$1.85$4,108.85768,351View SEC Filing Icon  
6/16/2022Vincent CapponiInsiderBuy3,000$2.00$6,000.00441,545View SEC Filing Icon  
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SEC Filings (Institutional Ownership Changes) for Cytosorbents (NASDAQ:CTSO)

32.87% of Cytosorbents 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 CTSO by year and by quarter.

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

Cytosorbents Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
5/16/2025Goldman Sachs Group Inc.62,662$63K0.0%+149.2%0.100%Search for SEC Filing on Google Icon
5/16/2025Granahan Investment Management LLC358,418$0.36M0.0%-70.2%0.572%Search for SEC Filing on Google Icon
5/14/2025Avenir Corp5,044,918$5.05M0.5%+63.1%8.058%Search for SEC Filing on Google Icon
5/9/2025CM Management LLC954,076$0.95M0.9%+36.3%1.524%Search for SEC Filing on Google Icon
5/5/2025Sargent Investment Group LLC823,500$0.82M0.1%-34.1%1.315%Search for SEC Filing on Google Icon
4/25/2025Skylands Capital LLC3,002,702$3M0.4%+7.9%4.804%Search for SEC Filing on Google Icon
4/10/2025Key Client Fiduciary Advisors LLC78,457$78K0.0%+127.0%0.126%Search for SEC Filing on Google Icon
2/17/2025Millennium Management LLC33,280$30K0.0%N/A0.061%Search for SEC Filing on Google Icon
2/17/2025Granahan Investment Management LLC1,204,580$1.10M0.0%-42.5%2.203%Search for SEC Filing on Google Icon
2/14/2025Northern Trust Corp91,560$83K0.0%+22.3%0.167%Search for SEC Filing on Google Icon
2/13/2025Avenir Corp3,093,946$2.82M0.3%+4.0%5.658%Search for SEC Filing on Google Icon
2/13/2025Neuberger Berman Group LLC1,681,883$1.53M0.0%-5.6%3.076%Search for SEC Filing on Google Icon
2/13/2025Raymond James Financial Inc.108,621$99K0.0%N/A0.199%Search for SEC Filing on Google Icon
2/13/2025Renaissance Technologies LLC88,020$80K0.0%+10.6%0.161%Search for SEC Filing on Google Icon
2/7/2025CM Management LLC700,000$0.64M0.6%-12.5%1.280%Search for SEC Filing on Google Icon
2/6/2025Raymond James Financial Inc.108,621$99K0.0%N/A0.199%Search for SEC Filing on Google Icon
2/4/2025Skylands Capital LLC2,781,622$2.53M0.4%+1.0%5.087%Search for SEC Filing on Google Icon
1/27/2025Sargent Investment Group LLC1,248,863$1.14M0.2%-23.2%2.284%Search for SEC Filing on Google Icon
11/16/2024Geode Capital Management LLC467,058$0.70M0.0%+7.5%0.854%Search for SEC Filing on Google Icon
11/6/2024Sargent Investment Group LLC1,626,247$2.44M0.4%+13.4%2.988%Search for SEC Filing on Google Icon
10/8/2024Atomi Financial Group Inc.34,292$51K0.0%N/A0.063%Search for SEC Filing on Google Icon
8/10/2024Sargent Investment Group LLC1,433,500$1.01M0.2%+4.9%2.640%Search for SEC Filing on Google Icon
8/2/2024CM Management LLC850,000$0.60M0.5%+3.0%1.565%Search for SEC Filing on Google Icon
7/26/2024Skylands Capital LLC2,840,778$2M0.3%-1.2%5.231%Search for SEC Filing on Google Icon
5/16/2024Avenir Corp3,172,696$3.01M0.3%+4.0%5.842%Search for SEC Filing on Google Icon
5/14/2024CM Management LLC825,000$0.78M0.6%+98.8%1.519%Search for SEC Filing on Google Icon
4/15/2024Key Client Fiduciary Advisors LLC34,557$33K0.0%+188.0%0.064%Search for SEC Filing on Google Icon
2/14/2024Avenir Corp3,051,402$3.39M0.3%+12.3%6.866%Search for SEC Filing on Google Icon
2/14/2024Neuberger Berman Group LLC1,801,799$2M0.0%+19.9%4.054%Search for SEC Filing on Google Icon
2/9/2024Neuberger Berman Group LLC1,801,799$2M0.0%+19.9%4.054%Search for SEC Filing on Google Icon
2/5/2024Skylands Capital LLC3,254,213$3.61M0.5%+10.5%7.323%Search for SEC Filing on Google Icon
2/5/2024Sargent Investment Group LLC1,308,747$1.45M0.3%+4.1%2.945%Search for SEC Filing on Google Icon
1/16/2024Raymond James & Associates50,000$56K0.0%N/A0.113%Search for SEC Filing on Google Icon
11/13/2023Sargent Investment Group LLC1,257,048$2.36M0.6%-2.5%2.834%Search for SEC Filing on Google Icon
11/1/2023Jacob Asset Management of New York LLC197,940$0.37M0.5%-16.8%0.446%Search for SEC Filing on Google Icon
10/27/2023Skylands Capital LLC2,944,670$5.54M0.8%+5.4%6.638%Search for SEC Filing on Google Icon
10/26/2023Chicago Partners Investment Group LLC36,358$67K0.0%+84.0%0.082%Search for SEC Filing on Google Icon
8/14/2023Granahan Investment Management LLC1,616,587$5.80M0.2%+3.1%3.644%Search for SEC Filing on Google Icon
8/11/2023Regal Investment Advisors LLC19,168$69K0.0%+36.6%0.043%Search for SEC Filing on Google Icon
8/11/2023Avenir Corp2,719,732$9.76M0.9%+6.4%6.131%Search for SEC Filing on Google Icon
8/8/2023Chicago Partners Investment Group LLC19,760$66K0.0%+88.2%0.045%Search for SEC Filing on Google Icon
8/7/2023Acadian Asset Management LLC9,059$32K0.0%N/A0.020%Search for SEC Filing on Google Icon
8/4/2023Simplex Trading LLC26,581$95K0.0%-18.8%0.060%Search for SEC Filing on Google Icon
8/3/2023Skylands Capital LLC2,793,470$10.03M1.4%+1.4%6.356%Search for SEC Filing on Google Icon
8/2/2023Houlihan Financial Resource Group Ltd.18,600$59K0.0%N/A0.042%Search for SEC Filing on Google Icon
7/31/2023Cowen Prime Advisors LLC42,301$0.15M0.1%-8.1%0.096%Search for SEC Filing on Google Icon
7/31/2023Sargent Investment Group LLC1,289,546$4.63M1.1%+5.8%2.934%Search for SEC Filing on Google Icon
7/19/2023Eudaimonia Partners LLC23,500$84K0.0%+17.5%0.053%Search for SEC Filing on Google Icon
7/10/2023B.O.S.S. Retirement Advisors LLC13,491$48K0.0%N/A0.031%Search for SEC Filing on Google Icon
7/10/2023AE Wealth Management LLC13,783$49K0.0%N/A0.031%Search for SEC Filing on Google Icon
5/15/2023Granahan Investment Management LLC1,567,540$5.28M0.2%-1.6%3.566%Search for SEC Filing on Google Icon
5/11/2023Jacob Asset Management of New York LLC237,940$0.80M0.9%-4.0%0.541%Search for SEC Filing on Google Icon
5/11/2023Texas Capital Bank Wealth Management Services Inc.37,625$0.13M0.0%-23.1%0.086%Search for SEC Filing on Google Icon
5/8/2023CM Management LLC450,000$1.52M1.8%-5.3%1.024%Search for SEC Filing on Google Icon
5/5/2023Coastal Investment Advisors Inc.12,000$40K0.0%N/A0.027%Search for SEC Filing on Google Icon
5/4/2023Skylands Capital LLC2,754,970$9.28M1.4%+8.4%6.268%Search for SEC Filing on Google Icon
5/3/2023Cowen Prime Advisors LLC46,050$0.11M0.0%+11.8%0.105%Search for SEC Filing on Google Icon
5/2/2023Sargent Investment Group LLC1,218,533$4.22M1.1%+23.8%2.773%Search for SEC Filing on Google Icon
4/26/2023Chicago Partners Investment Group LLC10,498$29K0.0%-31.0%0.024%Search for SEC Filing on Google Icon
2/14/2023Avenir Corp2,447,089$3.79M0.4%+5.7%5.608%Search for SEC Filing on Google Icon
2/14/2023Susquehanna International Group LLP31,943$50K0.0%+379.5%0.073%Search for SEC Filing on Google Icon
2/14/2023Granahan Investment Management LLC1,593,711$2.47M0.1%+5.5%3.652%Search for SEC Filing on Google Icon
2/13/2023Neuberger Berman Group LLC1,529,095$2.33M0.0%+3.3%3.504%Search for SEC Filing on Google Icon
2/9/2023CM Management LLC475,000$0.74M0.9%-29.6%1.089%Search for SEC Filing on Google Icon
2/9/2023Skylands Capital LLC2,542,091$3.94M0.6%+8.3%5.826%Search for SEC Filing on Google Icon
1/31/2023Sargent Investment Group LLC984,133$1.53M0.5%-11.2%2.255%Search for SEC Filing on Google Icon
1/24/2023Eudaimonia Partners LLC20,000$31K0.0%+81.8%0.046%Search for SEC Filing on Google Icon
11/16/2022Avenir Corp2,314,854$3.15M0.3%+6.9%5.304%Search for SEC Filing on Google Icon
11/14/2022Ergoteles LLC177,503$0.24M0.0%-12.4%0.407%Search for SEC Filing on Google Icon
11/4/2022CM Management LLC675,000$0.92M1.0%+12.5%1.549%Search for SEC Filing on Google Icon
11/1/2022Skylands Capital LLC2,347,034$3.19M0.5%+0.9%5.386%Search for SEC Filing on Google Icon
10/27/2022Sargent Investment Group LLC1,108,233$2.03M0.6%+13.4%2.543%Search for SEC Filing on Google Icon
8/15/2022Winning Points Advisors LLC24,900$54K0.1%-63.6%0.057%Search for SEC Filing on Google Icon
8/11/2022Avenir Corp2,164,999$4.74M0.5%-0.5%4.968%Search for SEC Filing on Google Icon
8/8/2022CM Management LLC600,000$1.31M1.4%+71.4%1.377%Search for SEC Filing on Google Icon
8/8/2022Y Intercept Hong Kong Ltd14,304$31K0.0%N/A0.033%Search for SEC Filing on Google Icon
8/4/2022Texas Capital Bank Wealth Management Services Inc.48,958$0.11M0.0%N/A0.112%Search for SEC Filing on Google Icon
8/1/2022Cowen Prime Advisors LLC42,200$92K0.1%+170.5%0.097%Search for SEC Filing on Google Icon
7/28/2022Skylands Capital LLC2,324,997$5.09M0.7%+9.3%5.337%Search for SEC Filing on Google Icon
7/27/2022Country Club Bank GFN15,225$34K0.0%N/A0.035%Search for SEC Filing on Google Icon
7/26/2022Sargent Investment Group LLC977,496$2.14M0.7%+18.1%2.244%Search for SEC Filing on Google Icon
7/19/2022Key Client Fiduciary Advisors LLC12,000$26K0.0%N/A0.028%Search for SEC Filing on Google Icon
5/16/2022Granahan Investment Management LLC1,215,928$3.88M0.1%+10.0%2.791%Search for SEC Filing on Google Icon
5/11/2022GSA Capital Partners LLP131,655$0.42M0.1%+912.5%0.302%Search for SEC Filing on Google Icon
5/9/2022CM Management LLC350,000$1.12M0.9%+16.7%0.803%Search for SEC Filing on Google Icon
5/6/2022Sargent Investment Group LLC827,380$2.64M0.7%+5.4%1.899%Search for SEC Filing on Google Icon
5/5/2022Skylands Capital LLC2,127,952$6.79M0.8%+9.3%4.885%Search for SEC Filing on Google Icon
5/5/2022Royce & Associates LP349,000$1.11M0.0%+39.0%0.801%Search for SEC Filing on Google Icon
5/2/2022Cowen Prime Advisors LLC15,600$50K0.0%+316.0%0.036%Search for SEC Filing on Google Icon
4/27/2022Winning Points Advisors LLC68,400$0.22M0.2%N/A0.157%Search for SEC Filing on Google Icon
3/11/2022Bradley Foster & Sargent Inc. CT10,250$43K0.0%-70.1%0.024%Search for SEC Filing on Google Icon
2/16/2022Avenir Corp1,787,275$7.49M0.6%+28.1%4.111%Search for SEC Filing on Google Icon
2/15/2022Cushing Asset Management LP18,671$78K0.0%-84.6%0.043%Search for SEC Filing on Google Icon
2/14/2022Redmile Group LLC717,244$3.01M0.1%-31.3%1.650%Search for SEC Filing on Google Icon
2/14/2022GSA Capital Partners LLP13,003$54K0.0%N/A0.030%Search for SEC Filing on Google Icon
2/10/2022Paradigm Financial Partners LLC41,790$0.16M0.0%N/A0.096%Search for SEC Filing on Google Icon
2/8/2022Raymond James Financial Services Advisors Inc.47,543$0.20M0.0%N/A0.109%Search for SEC Filing on Google Icon
2/8/2022Skylands Capital LLC1,946,374$8.16M0.9%+5.9%4.477%Search for SEC Filing on Google Icon
2/8/2022Northern Trust Corp379,252$1.59M0.0%-0.8%0.872%Search for SEC Filing on Google Icon
2/7/2022Royce & Associates LP251,000$1.05M0.0%+28.1%0.577%Search for SEC Filing on Google Icon
Data available starting January 2016

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Cytosorbents logo
Cytosorbents Corporation engages in the research, development, and commercialization of medical devices with its blood purification technology platform incorporating a proprietary adsorbent and porous polymer technology in the United States, Germany, and internationally. Its flagship product is CytoSorb, an extracorporeal cytokine adsorber for adjunctive therapy in the treatment of sepsis, adjunctive therapy in other critical care applications, prevention, and treatment of perioperative complications, and maintaining or enhancing the quality of solid organs harvested from donors for organ transplant; and offers VetResQ, a device for adjunctive therapy in the treatment of sepsis, pancreatitis, and other critical illnesses in animals. The company also develops CytoSorb-XL, a device for adjunctive therapy in the treatment of sepsis and other critical illnesses; HemoDefend blood purification technology platform to reduce contaminants in the blood supply that can cause transfusion reactions or disease when administering blood and blood products to patients, and removal of anti-A and anti-B blood group antibodies from whole blood and plasma; K+ontrol for treatment of severe hyperkalemia in patients with life-threatening conditions; and ContrastSorb for the removal of IV contrast in blood administered during CT imaging, an angiogram, or during a vascular interventional radiology procedure to reduce the risk of contrast-induced nephropathy. In addition, it develops BetaSorb, a device for the prevention and treatment of health complications caused by the accumulation of metabolic toxins in patients with chronic renal failure; DrugSorb, a device to remove drugs and chemicals from the blood; and DrugSorb-ATR, an antithrombotic removal system. The company was formerly known as MedaSorb Technologies Corporation and changed its name to Cytosorbents Corporation in May 2010. Cytosorbents Corporation was founded in 1997 and is headquartered in Princeton, New Jersey.
Read More on Cytosorbents

Today's Range

Now: $1.22
Low: $1.04
High: $1.29

50 Day Range

MA: $0.97
Low: $0.81
High: $1.22

52 Week Range

Now: $1.22
Low: $0.70
High: $1.61

Volume

195,686 shs

Average Volume

147,956 shs

Market Capitalization

$76.38 million

P/E Ratio

N/A

Dividend Yield

N/A

Beta

1.05

Who are the company insiders with the largest holdings of Cytosorbents?

Cytosorbents' top insider investors include:
  1. Peter J Mariani (CFO)
  2. Alan D Sobel (Director)
  3. Michael G Bator (Director)
Learn More about top insider investors at Cytosorbents.

Who are the major institutional investors of Cytosorbents?

Cytosorbents' top institutional investors include:
  1. Avenir Corp — 8.06%
  2. Skylands Capital LLC — 4.80%
  3. CM Management LLC — 1.52%
  4. Sargent Investment Group LLC — 1.32%
  5. Granahan Investment Management LLC — 0.57%
  6. Key Client Fiduciary Advisors LLC — 0.13%
Learn More about top institutional investors of Cytosorbents stock.

Which institutional investors are selling Cytosorbents stock?

Within the last quarter, CTSO stock was sold by these institutional investors:
  1. Granahan Investment Management LLC
  2. Sargent Investment Group LLC

Which institutional investors are buying Cytosorbents stock?

During the last quarter, CTSO stock was purchased by institutional investors including:
  1. Avenir Corp
  2. CM Management LLC
  3. Skylands Capital LLC
  4. Key Client Fiduciary Advisors LLC
  5. Goldman Sachs Group Inc.
During the last year, these company insiders have bought Cytosorbents stock:
  1. Peter J Mariani (CFO)
  2. Alan D Sobel (Director)
  3. Michael G Bator (Director)
Learn More investors buying Cytosorbents stock.