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Cytosorbents Corporation (CTSO)

Cytosorbents Corporation at a glance — key fundamentals, SEC filings, insider buying and selling, and earnings dates.

Cytosorbents Corporation (CTSO) is a Medical - Devices company based in US with a market capitalization of $31M. Revenue grew 4.1% year-over-year and free cash flow was negative at -$12.5M. This page tracks CTSO's SEC filings, insider buying and selling, earnings dates, and key fundamentals in one place.

US · 149 employees · IPO Aug 8, 2006

Valuation

Valuation & price

$0.50 · as of May 17, 2026 · -58.5% vs 52w high

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P/E ratio

Latest-FY diluted EPS

5.25

P/B ratio

Market cap ÷ book equity

—

Dividend yield

Price — last 12 months

$1.20$0.78$0.36Jul 25Dec 25Jul 26Jul 7, 25$1.03Jul 9, 25$1.11Jul 11, 25$1.06Jul 15, 25$1.03Jul 17, 25$0.99Jul 21, 25$1.04Jul 23, 25$1.02Jul 25, 25$0.94Jul 29, 25$0.91Jul 31, 25$0.85Aug 4, 25$0.91Aug 6, 25$0.90Aug 11, 25$1.20Aug 13, 25$1.08Aug 15, 25$1.16Aug 19, 25$1.08Aug 21, 25$0.84Aug 25, 25$0.91Aug 27, 25$0.93Aug 29, 25$0.94Sep 3, 25$0.98Sep 5, 25$0.97Sep 9, 25$1.00Sep 11, 25$0.95Sep 16, 25$0.91Sep 18, 25$0.93Sep 22, 25$0.97Sep 24, 25$0.95Sep 26, 25$0.93Sep 30, 25$0.93Oct 2, 25$0.98Oct 6, 25$0.94Oct 8, 25$0.97Oct 10, 25$0.92Oct 14, 25$0.92Oct 16, 25$0.91Oct 21, 25$0.83Oct 23, 25$0.84Oct 27, 25$0.82Oct 29, 25$0.78Oct 31, 25$0.80Nov 4, 25$0.79Nov 6, 25$0.71Nov 10, 25$0.72Nov 12, 25$0.64Nov 14, 25$0.66Nov 18, 25$0.62Nov 20, 25$0.62Nov 25, 25$0.84Nov 28, 25$0.81Dec 2, 25$0.77Dec 4, 25$0.74Dec 8, 25$0.72Dec 10, 25$0.66Dec 12, 25$0.68Dec 16, 25$0.64Dec 18, 25$0.64Dec 22, 25$0.77Dec 24, 25$0.69Dec 29, 25$0.66Jan 2, 26$0.66Jan 6, 26$0.68Jan 8, 26$0.67Jan 12, 26$0.70Jan 14, 26$0.72Jan 16, 26$0.70Jan 21, 26$0.68Jan 23, 26$0.68Jan 27, 26$0.68Jan 29, 26$0.66Feb 2, 26$0.68Feb 4, 26$0.67Feb 9, 26$0.67Feb 11, 26$0.62Feb 13, 26$0.64Feb 18, 26$0.65Feb 20, 26$0.64Feb 24, 26$0.69Feb 26, 26$0.73Mar 2, 26$0.75Mar 4, 26$0.79Mar 6, 26$0.80Mar 10, 26$0.78Mar 12, 26$0.73Mar 17, 26$0.68Mar 19, 26$0.64Mar 23, 26$0.67Mar 25, 26$0.67Mar 27, 26$0.59Mar 31, 26$0.57Apr 2, 26$0.58Apr 7, 26$0.61Apr 9, 26$0.60Apr 13, 26$0.59Apr 15, 26$0.59Apr 17, 26$0.66Apr 22, 26$0.63Apr 24, 26$0.63Apr 28, 26$0.60Apr 30, 26$0.61May 4, 26$0.62May 6, 26$0.57May 8, 26$0.61May 12, 26$0.59May 14, 26$0.54May 18, 26$0.48May 20, 26$0.47May 22, 26$0.46May 28, 26$0.50Jun 1, 26$0.47Jun 3, 26$0.49Jun 5, 26$0.46Jun 9, 26$0.42Jun 11, 26$0.39Jun 15, 26$0.43Jun 17, 26$0.48Jun 22, 26$0.41Jun 24, 26$0.47Jun 26, 26$0.36Jul 2, 26$0.39
$0.3652-week range$1.20
Loading valuation history…

Fundamentals

Key fundamentals

$31M

Market cap

4.1%

Revenue growth (YoY)

71.5%

Gross margin

-$12.5M

Free cash flow (USD)

$22.9M

Net debt

14.3%

Share dilution

0/5

Graham criteria passed

Defensive-investor screen

Healthcare

Sector

Trajectory

Long-term trends

Revenue by year

2016 → 2025

FY 2016$8.2MFY 2017$13.4MFY 2018$20.3MFY 2019$22.8MFY 2020$39.5MFY 2021$40.1MFY 2022$34.7MFY 2023$31.1MFY 2024$35.6MFY 2025$37.1M
$8.2M$37.1M

Free cash flow by year

2016 → 2025

FY 2016$-7.3MFY 2017$-8.1MFY 2018$-12.4MFY 2019$-18.3MFY 2020$-7.3MFY 2021$-18.3MFY 2022$-34.7MFY 2023$-22.6MFY 2024$-14.7MFY 2025$-12.5M
-$7.3M-$12.5M

Gross margin by year

2021 → 2025

FY 202172.5%FY 202259.8%FY 202370.6%FY 202469.9%FY 202571.5%
72.5%71.5%

Value screen

Graham defensive-investor tests

Computing the scorecard — refreshing any stale inputs…

2

Insider buys · 90 days

0

Insider sells · 90 days

Earnings

Last report: 10-Q filed May 13, 2026

Next expected: not yet scheduled

On the tape

Recent SEC & insider activity

  • 8-K eventRegulatory UpdateJun 25, 2026Filing
  • Insider buyInsider Buy $44KMARIANI PETER J · Chief Financial Officer · $44KJun 16, 2026Filing
  • Insider buyInsider Buy $105KChan Phillip P. · Director, Chief Executive Officer · $104.9KJun 15, 2026Filing
  • 8-K eventEarnings ReleaseMay 13, 2026Filing
  • Quarterly report10-Q FiledMay 13, 2026Filing
  • Annual report10-K FiledApr 15, 2026Filing
  • 8-K eventDelisting NoticeApr 2, 2026Filing

Questions

Frequently asked questions

What is Cytosorbents Corporation's market cap?

Cytosorbents Corporation (CTSO) has a market capitalization of $31M.

What is CTSO's P/E ratio?

A meaningful P/E ratio is not available for CTSO — the company's latest fiscal-year earnings per share is zero, negative, or not yet cached.

What is CTSO's price-to-book (P/B) ratio?

CTSO trades at 5.25 times book value per share.

Are insiders buying CTSO stock?

Yes — SEC Form 4 filings show 2 open-market insider buys and 0 sells at Cytosorbents Corporation in the last 90 days.

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Timeline

Every filing, insider trade & earnings on a price-anchored timeline

Filing Analyzer

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News

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Data: SEC EDGAR filings and cached fundamental data; prices and ratios use the most recent cached quote and statements (may lag by up to a day). Educational and research purposes only. Not investment advice.