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NASDAQ · Health care

Cytosorbents Corp (CTSO)

Cytosorbents Corp brought in $37.2M of revenue over the twelve months to June 30, 2026, up 3.1% from a year earlier. It posted a net loss of $18.2M. In fiscal 2025 capital spending exceeded operating cash flow by $12.5M. At June 30, 2026 it held $4.4M in cash against $17.2M of debt. Its latest periodic report to the SEC is the quarterly report (10-Q) filed on August 6, 2026.

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Price
$5.34
-7.93% on the day · November 11, 2026
52-week range $2.84 to $17.00
Market cap
$335.6M
Revenue (last 12 months)
$37.2M
+3.1% year on year
Net margin
-48.9%

Key facts about Cytosorbents Corp

Net worth
Cytosorbents Corp has a market value (market cap) of $335.6M at the latest share price, and shareholders' equity of -$751K on its balance sheet at June 30, 2026. A company's "net worth" usually means one of these: what the market pays for all its shares, or its assets minus its liabilities.
Revenue and profit
In fiscal 2025 revenue was $37.1M (+4.1% year on year), with a net loss of $8.2M. Over the 12 months to June 30, 2026: revenue $37.2M, net loss $18.2M.
Cash flow
In fiscal 2025 operations used $12.4M of cash.
Latest report
The latest periodic report (quarterly report, 10-Q) was filed with the SEC on August 6, 2026 and covers the period to June 30, 2026. Open on SEC EDGAR
Next earnings report
Cytosorbents Corp's next report was expected around October 30, 2026 and is not on file with the SEC yet.

What Cytosorbents Corp does

Cytosorbents Corp is registered with the SEC under industry code SIC 3841 (Surgical & Medical Instruments & Apparatus). Its shares trade on NASDAQ under the ticker CTSO.

Revenue and profit by year

Revenue
FY18: $22.5M $22.5M FY18FY19: $24.9M $24.9M FY19FY20: $41M $41M FY20FY21: $43.2M $43.2M FY21FY22: $34.7M $34.7M FY22FY23: $31.1M $31.1M FY23FY24: $35.6M $35.6M FY24FY25: $37.1M $37.1M FY25
Net income
FY18: -$17.2M -$17.2M FY18FY19: -$19.3M -$19.3M FY19FY20: -$7.8M -$7.8M FY20FY21: -$24.6M -$24.6M FY21FY22: -$32.8M -$32.8M FY22FY23: -$29.2M -$29.2M FY23FY24: -$20.7M -$20.7M FY24FY25: -$8.2M -$8.2M FY25

Fiscal years as reported in annual reports. Amounts in USD.

Key figures

Fiscal yearRevenueOperating incomeNet incomeDiluted EPSFree cash flow
2025$37.1M-$14.7M-$8.2M-$0.13-$12.5M
2024$35.6M-$16.5M-$20.7M-$0.38-$14.7M
2023$31.1M-$31.9M-$29.2M-$0.65-$22.2M
2022$34.7M-$31.5M-$32.8M-$0.75-$34.3M
2021$43.2M-$22.7M-$24.6M-$0.57-$17.6M
2020$41M-$10.4M-$7.8M-$0.20-$6.3M

Earnings: every quarter and the next report date

Full financial statements: income, balance sheet and cash flow

A report was expected around October 30, 2026 and is not on file yet.

Estimated from its filing rhythm: about 85 days after its last report of August 6, 2026, its usual gap. Not a date the company has announced. See the report calendar · Earnings, quarter by quarter

Where CTSO ranks in Health care

Revenue$37.1M
#425 of 751 in Health care · Bottom 43%
Revenue growth+4.1%
#363 of 532 in Health care · Bottom 32%
Net margin-22.1%
#333 of 544 in Health care · Bottom 39%
Free cash flow margin-33.8%
#355 of 490 in Health care · Bottom 28%

Latest fiscal year of every company in the sector with the figure reported. Revenue is ranked among companies reporting in US dollars; growth and margins among companies with at least 10 million of revenue. Health care

Latest SEC filings

What Cytosorbents Corp has filed recently, newest first. Each links to the original document on SEC EDGAR.

  1. September 23, 2026
  2. September 8, 2026
  3. August 14, 2026
  4. August 7, 2026
  5. August 6, 2026
  6. August 6, 2026
    Quarterly report 10-Q · period to June 30, 2026Revenue was flat at $9.6M versus the same quarter last year; diluted EPS -$0.07 versus $0.03.
  7. July 6, 2026
  8. June 25, 2026
  9. June 25, 2026
  10. June 25, 2026

Recent insider filings (Forms 3, 4 and 144): 10, the latest on September 16, 2026. Insider transactions on SEC

Insider trades

What the people running Cytosorbents Corp did with its shares, from the Form 4 filings they must send the SEC within two business days.

Insiders bought $120.4K worth of shares on the open market in the last 90 days and sold none.

Bought (open market)
$120.4K
last 90 days
Sold
$0
last 90 days
Net bought
208,347
$120.4K
DateInsiderWhatSharesPriceValueFiling
September 15, 2026 Sobel Alan D.Director Bought 1,900 $6.12 $11.6K Form 4
September 15, 2026 Sobel Alan D.Director Bought 500 $6.05 $3K Form 4
September 15, 2026 Sobel Alan D.Director Bought 100 $6.01 $601 Form 4
September 15, 2026 Chan Phillip P.Chief Executive Officer, Director Bought 3,774 $6.00 $22.6K Form 4
September 14, 2026 Capponi VincentPresident and COO Bought 1,800 $6.07 $10.9K Form 4
September 14, 2026 Capponi VincentPresident and COO Bought 273 $5.90 $1.6K Form 4
September 4, 2026 Chan Phillip P.Chief Executive Officer, Director Bought 200,000 $0.35 $70K Form 4
June 15, 2026 Mariani Peter JChief Financial Officer Bought 100,000 $0.44 $44K Form 4

All insider filings on SEC.gov · Where insiders are buying across the market

Who owns CTSO

Three views from three kinds of SEC filings, each with its own date. They overlap and are not added up.

5% holders

Anyone who owns more than 5% of a class of shares must say so on Schedule 13D (if they may seek to influence the company) or 13G (a passive holder). The latest filing of each holder is shown: 13G filings of the last 2 years, 13D of the last 3.

HolderOf classSharesFiled
Avenir Corp13G, passive with 1 related filers 8.3% 5,230,099 February 13, 2026
Thomas A. Satterfield, Jr.13G, passive 6.56% 3,998,867 January 17, 2025
Avenue Capital Management II, L.P.13G, passive with 7 related filers 5.7% 3,755,273 May 28, 2025

Latest filings below 5%: The Vanguard Group 3.11% (April 30, 2025); Skylands Capital, LLC 4.8% (April 17, 2025); Granahan Investment Management LLC 3.85% (November 14, 2024).

Largest institutional holders

No Form 13F positions imported for this company yet.

Insiders

Reported holdings of insiders who filed a Form 4 in the last 12 months: the shares each one held after their latest reported transaction. This is not the total held by all insiders.

4 insiders reported holding 789,383 shares in total, about $4.2M at the last price.

HolderSharesAs of
Mariani Peter JChief Financial Officer 638,113 June 15, 2026
Chan Phillip P.Chief Executive Officer, Director 100,996 September 15, 2026
Capponi VincentPresident and COO 40,387 September 14, 2026
Sobel Alan D.Director 9,887 September 15, 2026

Schedule 13D/13G filings on SEC.gov

All filings on SEC EDGAR

Questions about CTSO

What does Cytosorbents Corp do?

Cytosorbents Corp is a company in the Health care sector, listed on NASDAQ as CTSO. Its shares trade on NASDAQ under the ticker CTSO.

What is Cytosorbents Corp's net worth?

Cytosorbents Corp has a market value (market cap) of $335.6M at the latest share price, and shareholders' equity of -$751K on its balance sheet at June 30, 2026. A company's "net worth" usually means one of these: what the market pays for all its shares, or its assets minus its liabilities.

Is Cytosorbents Corp profitable?

No. Over the twelve months to June 30, 2026 it reported a net loss of $18.2M on revenue of $37.2M.

How much revenue does Cytosorbents Corp make?

Over the twelve months to June 30, 2026 Cytosorbents Corp reported revenue of $37.2M. That is 3.1% more than a year earlier.

When did Cytosorbents Corp last report?

Its most recent periodic report is the quarterly report (10-Q) filed on August 6, 2026. It covers the period to June 30, 2026. Its newest filing of any kind is the investor disclosure from September 23, 2026.

When is Cytosorbents Corp's next earnings report?

Cytosorbents Corp's next report was expected around October 30, 2026 and is not on file with the SEC yet.

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Where the numbers come from

Financial figures are the values Cytosorbents Corp tagged in its own SEC filings (XBRL), taken from the latest filing for each period, so restatements replace older figures. Revenue, profit and cash flow are for full fiscal years unless marked as the last twelve months, which is the sum of the four most recent quarters. Where a company reports only the full year, the fourth quarter is the year minus the first three.

Prices are delayed end-of-day market data in the listing currency, and market cap moves with the price. P/E is shown only when earnings per share are positive. Nothing here is investment advice.