Institutional shares held 15.8 Million
16K calls
0 puts
Total value of holdings $16.2M
$16K calls
$0 puts
Market Cap $44.9M
43,577,400 Shares Out.
Institutional ownership 36.2%
# of Institutions 58


Latest Institutional Activity in CTSO

Top Purchases

Q1 2025
Key Client Fiduciary Advisors, LLC Shares Held: 78.5K ($80.8K)
Q1 2025
Merit Financial Group, LLC Shares Held: 15.1K ($15.5K)
Q4 2024
Ubs Group Ag Shares Held: 145K ($149K)
Q4 2024
Avenir Corp Shares Held: 3.09M ($3.19M)
Q4 2024
Raymond James Financial Inc Shares Held: 109K ($112K)

Top Sells

Q4 2024
Granahan Investment Management, LLC Shares Held: 1.2M ($1.24M)
Q4 2024
Sargent Investment Group, LLC Shares Held: 1.25M ($1.29M)
Q4 2024
Cm Management, LLC Shares Held: 700K ($721K)
Q4 2024
Neuberger Berman Group LLC Shares Held: 1.68M ($1.73M)
Q4 2024
Morgan Stanley Shares Held: 107K ($110K)

About CTSO

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. Its flagship product is CytoSorb, an extracorporeal cytokine filter for adjunctive therapy in the treatment of sepsis, adjunctive therapy in other critical care applications, prevention and treatment of perioperative complications of cardiopulmonary bypass surgery, and maintaining or enhancing the quality of solid organs harvested from donors for organ transplant. The company also develops VetResQ, a device for adjunctive therapy in the treatment of sepsis, pancreatitis, and other critical illnesses in animals; 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, as well as removal of anti-A and anti-B blood group antibodies from fresh 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 is involved in the development of 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 toxic 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.


Insider Transactions at CTSO

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
721K Shares
From 13 Insiders
Grant, award, or other acquisition 350K shares
Exercise of out-of-the-money derivative securities 111K shares
Open market or private purchase 51.4K shares
Exercise of in-the-money or at-the-money derivatives securities 209K shares
Sell / Disposition
0 Shares
From 0 Insiders

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P - Open market or private purchase×
S - Open market or private sale×
V - Transaction voluntarily reported earlier than required×
A - Grant, award, or other acquisition×
D - Sale (or disposition) back to the issuer×
F - Payment of exercise price or tax liability×
I - Discretionary transaction×
M - Exercise of conversion of derivative security×
C - Conversion of derivative security×
E - Expiration of short derivative position×
H - Expiration (or cancellation) of long derivative position with value received×
O - Exercise of out-of-the-money derivative securities×
X - Exercise of in-the-money or at-the-money derivatives securities×
G - Bona fide gift×
L - Small Acquisition×
W - Acquisition or disposition by will or laws×
Z - Deposit into or withdrawal from voting trust×
J - Other acquisition or disposition×
K - Transaction in equity swap or similar instrument×
U - Disposition due to a tender of shares in a change of control transaction×
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