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Companies / Health Care / Cytosorbents Corp
CTSO

Cytosorbents Corp

Health CareSurgical & Medical Instruments
Ticker CTSOPRINCETON, NJFiscal year ends DecemberBook value per share $-0.01Diluted shares 62.8M

CytoSorbents Corporation (Nasdaq: CTSO) develops and commercializes blood purification technologies based on porous polymer beads that remove harmful substances from blood and other bodily fluids. Its cartridges connect to standard hospital blood-pumping systems, including dialysis, continuous renal replacement… From the company’s description.

Over the twelve months to Jun 30, 2026, Cytosorbents Corp reported revenue of $37.22M, up 8.6% from a year earlier, and a net loss of $18.21M. Its operating margin was −34.7%, and operations used $9.15M in cash. In fiscal 2025, it reported revenue of $37.06M, up 4.1% from fiscal 2024, and a net loss of $8.20M.

Fiscal year 2025 · ends 12-31Changes are against fiscal 2024The amber dot is the latest twelve months, to 2026-06-30
Sales & profitability
$37.06MFY2025
+4.1% year over year
Last 12 mo $37.22M
-39.79%FY2025
+7.4 percentage points
Last 12 mo -34.74%
$-8.20MFY2025
+60.4% year over year
Last 12 mo $-18.21M
-129.84%FY2025
+56.7 percentage points
Last 12 mo 2425.30%
Cash & financing
$-12.38MFY2025
+14.2% year over year
Last 12 mo $-9.15M
$-12.54MFY2025
+14.8% year over year
Last 12 mo $-9.30M
2.82FY2025
Was 1.26× a year earlier
Last 12 mo -22.96
62.2MFY2025
+14.3% year over year
Last 12 mo 62.8M

Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.

What Cytosorbents Corp does

In the company’s own words

CytoSorbents Corporation (Nasdaq: CTSO) develops and commercializes blood purification technologies based on porous polymer beads that remove harmful substances from blood and other bodily fluids. Its cartridges connect to standard hospital blood-pumping systems, including dialysis, continuous renal replacement therapy, ECMO and heart-lung machines. The lead product, CytoSorb, is used in critical care and cardiac surgery to remove inflammatory substances, toxins and certain blood-thinning drugs; it is approved in the European Union and distributed in more than 70 countries. More than 300,000 CytoSorb devices have been used cumulatively. Other products include ECOS-300CY for organ perfusion before transplantation, VetResQ for critical illness in animals, and the PuriFi hemoperfusion pump. DrugSorb-ATR, an investigational system for removing antithrombotic drugs during urgent cardiac surgery, is being developed for the U.S. and Canadian markets. Customers include hospitals and healthcare providers, distributors, and veterinary care providers. Its website is http://www.cytosorbents.com.

Company details
Sector
Health Care
Industry (SIC)
Surgical & Medical Instruments
Headquarters
PRINCETON, NJ
Fiscal year end
December
CIK
1175151
SIC
3841

Financial performance, year by year

Fiscal 2011–2025 · USD
$-40.41M$-17.62M$5.18M$27.97M$50.76M201120122013201420152016201720182019202020212022202320242025Last 12 moLast 12 monthsLast 12 months

The full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.

Ownership

Who owns Cytosorbents Corp — and what changed

Funds as of 2026Q2 · superinvestors as of 2026-06-30

13
funds hold it
0 of 35
superinvestors hold it
$1.34M
held by funds, at market
5.0%
of shares held by funds

Largest fund holders · Cytosorbents Corp’s weight in each

VANGUARD TOTAL STOCK MARKET INDEX FUND
VTI · VANGUARD INDEX FUNDS
0.00%of fund net assets
Neuberger Intrinsic Value Fund
NINAX · NEUBERGER BERMAN EQUITY FUNDS
—of fund net assets
VANGUARD EXTENDED MARKET INDEX FUND
VXF · VANGUARD INDEX FUNDS
0.00%of fund net assets
Fidelity Extended Market Index Fund
FSMAX · Fidelity Concord Street Trust
—of fund net assets
Fidelity Total Market Index Fund
FSKAX · Fidelity Concord Street Trust
—of fund net assets

Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.

Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.

Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.

Connected research

Put this business in context.

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