Cytosorbents (CTSO) Latest Stock Analysis Report – Oct 15, 2026, 4:00 PM ET
Updated Oct 15, 2026, 4:00 PM ET
- Closed at $3.06, -0.97% vs the prior close of $3.09.
- Volume 10.80K shares, 0.7x its 50-day average.
- No new SEC filings since the prior session.
- No new insider buys or sales reported since the prior session.
CTSO dips 1.0% to $3.06, a 52-week low, 4 down days in a row. Closed at $3.06, -0.97% vs the prior close of $3.09. Day range $2.84–$3.09, opened at $2.95.
CTSO daily analysis — what happened
A plain-English, data-only note written after every US trading day. Newest first; older days stay archived below.
Oct 15, 2026 — CTSO dips 1.0% to $3.06, a 52-week low, 4 down days in a row
- Closed at $3.06, -0.97% vs the prior close of $3.09. Day range $2.84–$3.09, opened at $2.95.
- Volume was 10.80K shares, 0.7x its 50-day average of 15.63K.
- Price is -47.4% vs its 50-day average ($5.81) and -69.3% vs its 200-day average ($9.96).
- 52-week range $2.84–$18.80; today's close sits at 1% of that range, 83.7% below the 52-week high.
- That makes 4 straight losses.
Oct 14, 2026 — CTSO slides 10.7% to $3.09, a 52-week low, 3 down days in a row
- Closed at $3.09, -10.69% vs the prior close of $3.46. Day range $2.96–$3.46, opened at $3.39.
- Volume was 16.50K shares, 1.1x its 50-day average of 15.41K.
- Price is -47.7% vs its 50-day average ($5.91) and -69.1% vs its 200-day average ($10.01).
- 52-week range $2.96–$18.80; today's close sits at 1% of that range, 83.6% below the 52-week high.
- That makes 3 straight losses.
Oct 13, 2026 — CTSO slides 3.6% to $3.46, a 52-week low
- Closed at $3.46, -3.62% vs the prior close of $3.59. Day range $3.42–$3.65, opened at $3.65.
- Volume was 10.20K shares, 0.7x its 50-day average of 15.30K.
- Price is -42.3% vs its 50-day average ($5.99) and -65.6% vs its 200-day average ($10.07).
- 52-week range $3.42–$19.72; today's close sits at 0% of that range, 82.5% below the 52-week high.
Oct 12, 2026 — CTSO slides 5.3% to $3.59, a 52-week low
- Closed at $3.59, -5.28% vs the prior close of $3.79. Day range $3.51–$3.82, opened at $3.65.
- Volume was 8.30K shares, 0.5x its 50-day average of 15.22K — lighter than usual.
- Price is -40.9% vs its 50-day average ($6.07) and -64.5% vs its 200-day average ($10.12).
- 52-week range $3.51–$19.72; today's close sits at 0% of that range, 81.8% below the 52-week high.
Oct 9, 2026 — CTSO rises 1.6% to $3.79
- Closed at $3.79, +1.61% vs the prior close of $3.73. Day range $3.59–$3.80, opened at $3.67.
- Volume was 6.20K shares, 0.4x its 50-day average of 15.14K — lighter than usual.
- Price is -38.3% vs its 50-day average ($6.15) and -62.7% vs its 200-day average ($10.17).
- 52-week range $3.59–$20.00; today's close sits at 1% of that range, 81.1% below the 52-week high.
Oct 8, 2026 — CTSO slides 3.6% to $3.73, a 52-week low, 5 down days in a row
- Closed at $3.73, -3.62% vs the prior close of $3.87. Day range $3.67–$3.81, opened at $3.81.
- Volume was 10.80K shares, 0.7x its 50-day average of 14.95K.
- Price is -39.9% vs its 50-day average ($6.21) and -63.5% vs its 200-day average ($10.23).
- 52-week range $3.66–$20.00; today's close sits at 0% of that range, 81.3% below the 52-week high.
- That makes 5 straight losses.
Oct 7, 2026 — CTSO dips 2.3% to $3.87, a 52-week low, 4 down days in a row
- Closed at $3.87, -2.27% vs the prior close of $3.96. Day range $3.84–$4.06, opened at $4.00.
- Volume was 6.40K shares, 0.4x its 50-day average of 14.92K — lighter than usual.
- Price is -38.3% vs its 50-day average ($6.28) and -62.3% vs its 200-day average ($10.27).
- 52-week range $3.66–$20.00; today's close sits at 1% of that range, 80.7% below the 52-week high.
- That makes 4 straight losses.
Oct 6, 2026 — CTSO ends flat (-0.1%) to $3.96, 3 down days in a row
- Closed at $3.96, -0.13% vs the prior close of $3.96. Day range $3.89–$4.29, opened at $4.07.
- Volume was 24.80K shares, 1.7x its 50-day average of 14.49K.
- Price is -37.6% vs its 50-day average ($6.35) and -61.6% vs its 200-day average ($10.32).
- 52-week range $3.66–$20.00; today's close sits at 2% of that range, 80.2% below the 52-week high.
- That makes 3 straight losses.
Oct 5, 2026 — CTSO dips 2.1% to $3.96
- Closed at $3.96, -2.10% vs the prior close of $4.05. Day range $3.66–$4.05, opened at $3.85.
- Volume was 8.40K shares, 0.6x its 50-day average of 14.36K — lighter than usual.
- Price is -38.2% vs its 50-day average ($6.41) and -61.7% vs its 200-day average ($10.36).
- 52-week range $3.66–$20.40; today's close sits at 2% of that range, 80.6% below the 52-week high.
Oct 2, 2026 — CTSO slides 3.2% to $4.05
- Closed at $4.05, -3.23% vs the prior close of $4.18. Day range $3.83–$4.29, opened at $4.17.
- Volume was 12.50K shares, 0.9x its 50-day average of 14.15K.
- Price is -37.5% vs its 50-day average ($6.48) and -61.1% vs its 200-day average ($10.41).
- 52-week range $3.77–$20.40; today's close sits at 2% of that range, 80.1% below the 52-week high.
CTSO latest news & SEC filings
Every SEC filing by or about CTSO in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.
Sep 23, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 7.01 — Released information under Regulation FD (e.g. a presentation or press release).
- Item 8.01 — Reported other events the company considers important.
Sep 16, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Chan Phillip P. bought 3,774 shares at $6.00 (≈$22.64K) on Sep 15, 2026; now holds 100,996
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Sep 16, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Capponi Vincent bought 1,800 shares at $6.07 (≈$10.93K) on Sep 14, 2026; now holds 40,114
- Capponi Vincent bought 273 shares at $5.90 (≈$1.61K) on Sep 14, 2026; now holds 40,387
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Sep 16, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Sobel Alan D. bought 1,900 shares at $6.12 (≈$11.63K) on Sep 15, 2026; now holds 9,287
- Sobel Alan D. bought 500 shares at $6.05 (≈$3.02K) on Sep 15, 2026; now holds 9,787
- Sobel Alan D. bought 100 shares at $6.01 (≈$601) on Sep 15, 2026; now holds 9,887
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Sep 9, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Chan Phillip P. bought 200,000 shares at $0.35 (≈$70.00K) on Sep 4, 2026
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Sep 8, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 5.03 — Amended its charter or bylaws / changed fiscal year.
Aug 14, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 5.07 — Reported shareholder vote results.
Aug 7, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 7.01 — Released information under Regulation FD (e.g. a presentation or press release).
Aug 6, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 2.02 — Reported results of operations (earnings release).
This is a results-day filing: the earnings press release is attached as an exhibit.
Aug 6, 2026 · Form 10-Q — Quarterly report
Quarterly report (unaudited financial statements for the quarter)
Quarter ended Jun 30, 2026:
- Revenue: $9.63M (prior year $9.62M) (+0.2% vs Jun 30, 2025)
- Net income: -$4.42M (prior year $1.95M) (loss widened vs Jun 30, 2025)
- Diluted EPS: -$0.07 (prior year $0.03) (loss widened vs Jun 30, 2025)
Jul 6, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 3.01 — Stock exchange listing notice or transfer of listing.
Jun 25, 2026 · Form ARS — Annual report to shareholders
Annual report to shareholders
Jun 25, 2026 · Form DEFA14A — Additional proxy materials
Additional proxy materials
Jun 25, 2026 · Form DEF 14A — Proxy statement
Proxy statement — agenda for the shareholder meeting (board elections, executive pay, votes)
Jun 25, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 7.01 — Released information under Regulation FD (e.g. a presentation or press release).
Things to know before you trade CTSO
- Last results release: Aug 6, 2026 (8-K Item 2.02). Previous ones: May 13, 2026, Mar 25, 2026, Nov 13, 2025. Based on that rhythm, the next report is likely around Nov 5, 2026 — an estimate, not a confirmed date.
- How much it moves: over the last 20 sessions the average daily move was 4.09% (largest 12.4%). That is a volatile stock.
- Liquidity: about 11.55K shares (≈$35.34K) trade per day on average. Thin volume can mean wider bid/ask spreads.
- 52-week position: $3.06 vs a range of $2.84–$18.80 (1% of the range).
- Dividends: no cash dividends in the last 2 years.
- Splits: 1:20 on Sep 8, 2026
- Insider trades (Form 4, last 12 months, recent 25 shown): 10 open-market buys, 0 sales; latest: Phillip P. Chan bought 3,774 shares on Sep 15, 2026.
- Latest filings: 8-K Sep 23, 2026; 8-K Sep 8, 2026; 8-K Aug 14, 2026.
- Share count: 62.84M shares outstanding (Jul 31, 2026), +0.1% vs a year earlier.
- Listing: Nasdaq · industry: Surgical & Medical Instruments & Apparatus.
CTSO market data (last 20 sessions)
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Oct 15, 2026 | 2.95 | 3.09 | 2.84 | 3.06 | 10.80K |
| Oct 14, 2026 | 3.39 | 3.46 | 2.96 | 3.09 | 16.50K |
| Oct 13, 2026 | 3.65 | 3.65 | 3.42 | 3.46 | 10.20K |
| Oct 12, 2026 | 3.65 | 3.82 | 3.51 | 3.59 | 8.30K |
| Oct 9, 2026 | 3.67 | 3.80 | 3.59 | 3.79 | 6.20K |
| Oct 8, 2026 | 3.81 | 3.81 | 3.67 | 3.73 | 10.80K |
| Oct 7, 2026 | 4.00 | 4.06 | 3.84 | 3.87 | 6.40K |
| Oct 6, 2026 | 4.07 | 4.29 | 3.89 | 3.96 | 24.80K |
| Oct 5, 2026 | 3.85 | 4.05 | 3.66 | 3.96 | 8.40K |
| Oct 2, 2026 | 4.17 | 4.29 | 3.83 | 4.05 | 12.50K |
| Oct 1, 2026 | 4.38 | 4.50 | 3.93 | 4.18 | 8.30K |
| Sep 30, 2026 | 4.13 | 4.15 | 3.77 | 3.90 | 13.70K |
| Sep 29, 2026 | 4.08 | 4.48 | 4.00 | 4.00 | 9.80K |
| Sep 28, 2026 | 4.28 | 4.57 | 3.97 | 4.02 | 14.30K |
| Sep 25, 2026 | 4.44 | 4.83 | 4.33 | 4.38 | 6.50K |
| Sep 24, 2026 | 5.20 | 5.20 | 3.94 | 4.30 | 24.90K |
| Sep 23, 2026 | 5.25 | 5.36 | 4.89 | 4.91 | 6.10K |
| Sep 22, 2026 | 5.53 | 5.59 | 5.31 | 5.32 | 6.40K |
| Sep 21, 2026 | 5.79 | 5.79 | 5.16 | 5.51 | 14.30K |
| Sep 18, 2026 | 5.88 | 6.00 | 5.50 | 5.75 | 11.80K |
About Cytosorbents
Cytosorbents (CTSO) is listed on the Nasdaq and classified by the SEC under “Surgical & Medical Instruments & Apparatus”. Its business address is in PRINCETON, NJ. State of incorporation: DE. Fiscal year ends December 31. SEC CIK 1175151.
CTSO board of directors & executives
From SEC Form 3/4/5 insider filings made in the last 12 months (date = latest filing).
Directors
| Name | Role | Latest filing |
|---|---|---|
| Phillip P. Chan | Chief Executive Officer | Sep 16, 2026 |
| Alan D. Sobel | Director | Sep 16, 2026 |
Executive officers
| Name | Title | Latest filing |
|---|---|---|
| Vincent Capponi | President and COO | Sep 16, 2026 |
| Phillip P. Chan | Chief Executive Officer | Sep 16, 2026 |
| Peter J Mariani | Chief Financial Officer | Jun 16, 2026 |
Recent insider buys & sales
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Sep 15, 2026 | Phillip P. Chan | Buy | 3,774 | $6.00 |
| Sep 15, 2026 | Alan D. Sobel | Buy | 100 | $6.01 |
| Sep 15, 2026 | Alan D. Sobel | Buy | 1,900 | $6.12 |
| Sep 15, 2026 | Alan D. Sobel | Buy | 500 | $6.05 |
| Sep 14, 2026 | Vincent Capponi | Buy | 273 | $5.90 |
| Sep 14, 2026 | Vincent Capponi | Buy | 1,800 | $6.07 |
| Sep 4, 2026 | Phillip P. Chan | Buy | 200,000 | $0.35 |
| Jun 15, 2026 | Peter J Mariani | Buy | 100,000 | $0.44 |
| Jun 15, 2026 | Phillip P. Chan | Buy | 10,333 | $0.43 |
| Jun 12, 2026 | Phillip P. Chan | Buy | 251,136 | $0.40 |
CTSO financials (annual, from XBRL filings)
| Fiscal year end | Revenue | Net income | Diluted EPS | Operating cash flow |
|---|---|---|---|---|
| Dec 31, 2025 | — | $-8.20M | -0.13 | $-12.38M |
| Dec 31, 2024 | — | $-20.72M | -0.38 | $-14.43M |
| Dec 31, 2023 | — | $-29.25M | -0.65 | $-21.66M |
| Dec 31, 2022 | — | $-32.81M | -0.75 | $-28.23M |
| Dec 31, 2021 | — | $-24.56M | -0.57 | $-14.01M |
Latest balance sheet: total assets $37.96M, total liabilities $38.71M, cash $4.41M (as of Jun 30, 2026).
CTSO earnings / results-day log
| Date | Filing | Close that day |
|---|---|---|
| Aug 6, 2026 | 8-K Item 2.02 (results) | $7.98 |
| May 13, 2026 | 8-K Item 2.02 (results) | $11.42 |
| Mar 25, 2026 | 8-K Item 2.02 (results) | $13.42 |
| Nov 13, 2025 | 8-K Item 2.02 (results) | $13.32 |
| May 14, 2025 | 8-K Item 2.02 (results) | $16.16 |
| Mar 31, 2025 | 8-K Item 2.02 (results) | $20.00 |
| Mar 21, 2025 | 8-K Item 2.02 (results) | $19.68 |
| Mar 4, 2025 | 8-K Item 2.02 (results) | $20.00 |
| Jan 13, 2025 | 8-K Item 2.02 (results) | $21.00 |
| Jan 3, 2025 | 8-K Item 2.02 (results) | $18.74 |
| Nov 7, 2024 | 8-K Item 2.02 (results) | $18.06 |
| Oct 1, 2024 | 8-K Item 2.02 (results) | — |
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Information only, not investment advice. BuyMeWhiskey is not a registered investment adviser or broker-dealer; nothing here is a recommendation to buy, sell or hold any security, and there are no price targets. Data comes from SEC EDGAR filings and public end-of-day market data and may be delayed or contain errors. Verify with the company's filings before making decisions. Prices: end-of-day data as of Oct 15, 2026, 4:00 PM ET. Filings: SEC EDGAR. Updated after every US trading day.