NASDAQ · CTSO

Cytosorbents Corp

Closing price · Nov 13, 2026 $4.87
Last insider buy price $6.12 Paid by Director Alan Sobel on Sep 15, 2026 (Form 4). Not today's price.

Latest quarter · ended Jun 30, 2026

Cash got weaker, but sales grew

descriptionFiled Aug 6, 2026
Revenue growthSlower
+0.2%
Quarter ended Sep 30, 2024: −2.2% sales vs. a year beforeQuarter ended Dec 31, 2024: +5.6% sales vs. a year beforeQuarter ended Mar 31, 2025: −2.9% sales vs. a year beforeQuarter ended Jun 30, 2025: +8.8% sales vs. a year beforeQuarter ended Sep 30, 2025: +10.1% sales vs. a year beforeQuarter ended Dec 31, 2025: +0.9% sales vs. a year beforeQuarter ended Mar 31, 2026: +1.6% sales vs. a year beforeQuarter ended Jun 30, 2026: +0.2% sales vs. a year before
Sep '24Jun '26
$9.63M vs. $9.62M a year ago
Gross marginBetter
73.2%
Quarter ended Sep 30, 2024: 61.0% gross marginQuarter ended Dec 31, 2024: 68.4% gross marginQuarter ended Mar 31, 2025: 71.1% gross marginQuarter ended Jun 30, 2025: 70.9% gross marginQuarter ended Sep 30, 2025: 70.3% gross marginQuarter ended Dec 31, 2025: 73.7% gross marginQuarter ended Mar 31, 2026: 69.2% gross marginQuarter ended Jun 30, 2026: 73.2% gross margin
Sep '24Jun '26
vs. 70.9% a year ago
Cash from operationsBetter
−$583K
Quarter ended Sep 30, 2024: −$2.46M cash from operationsQuarter ended Dec 31, 2024: −$2.34M cash from operationsQuarter ended Mar 31, 2025: −$3.47M cash from operationsQuarter ended Jun 30, 2025: −$1.51M cash from operationsQuarter ended Sep 30, 2025: −$2.58M cash from operationsQuarter ended Dec 31, 2025: −$4.83M cash from operationsQuarter ended Mar 31, 2026: −$1.16M cash from operationsQuarter ended Jun 30, 2026: −$583K cash from operations
Sep '24Jun '26
vs. −$1.51M a year ago
Share countSteady
+0.1%
Quarter ended Sep 30, 2024: 54.68M sharesQuarter ended Dec 31, 2024: 62.5M sharesQuarter ended Mar 31, 2025: 62.61M sharesQuarter ended Jun 30, 2025: 62.76M sharesQuarter ended Sep 30, 2025: 62.8M sharesQuarter ended Dec 31, 2025: 62.7M sharesQuarter ended Mar 31, 2026: 62.79M sharesQuarter ended Jun 30, 2026: 62.84M shares
Sep '24Jun '26
62.84M shares vs. 62.76M a year ago

Numbers come from the company's own 10-Q and 10-K reports filed with the SEC. Each bar is one quarter, oldest on the left. The colored bar is the latest. Hover over or tap a bar to see its number.

Smart money pulse

What insiders and funds are doing

Buying Insiders: as of Nov 13 Funds: as of Jun 30, 2026
−1000+100 +100
  • info
    No real insider sales in 12 months. Planned 10b5-1 sales and tax withholding are left out.

−100 means everyone selling, +100 everyone buying. This is data, not advice.

How the Pulse works

Pulse runs from −100 (everyone selling) to +100 (everyone buying). Half comes from insiders: real buyers vs. real sellers in the last 90 days (Form 4). Half comes from funds: funds that bought vs. funds that sold last quarter (13F). 13F is a snapshot of long positions on the last day of the quarter, filed up to 45 days later. It does not show short positions or trades since then.

Who owns it

51 funds report owning CTSO, up from 49

Holdings as of Jun 30, 2026
New9
Added7
Held27
Trimmed8
Sold out7

Insider trades · last 12 months

Real buys and sales

● Open-market buy● Open-market sale
CEOCFOOther officersDirectorsDecJanFebMarAprMayJunJulAugSepOctNovOpen-market buy · Jun 12 · $100KOpen-market buy · Jun 15 · $4.44KOpen-market buy · Jun 15 · $44KOpen-market buy · Sep 4 · $70KOpen-market buy · Sep 14 · $12.5KOpen-market buy · Sep 15 · $22.6KOpen-market buy · Sep 15 · $15.3K
CEOCFOOther officersDirectorsJunJulAugSepOctNovOpen-market buy · Jun 12 · $100KOpen-market buy · Jun 15 · $4.44KOpen-market buy · Jun 15 · $44KOpen-market buy · Sep 4 · $70KOpen-market buy · Sep 14 · $12.5KOpen-market buy · Sep 15 · $22.6KOpen-market buy · Sep 15 · $15.3K

Last 6 months. A wider screen shows 12.

Showing 7 real trades. Bigger dot means a bigger trade.

Real trades, newest first

Sep 15 Phillip Chan CEO, Director Open-market buy $22.6K 3,774 sh at $6.00
Sep 15 Alan Sobel Director Open-market buy $15.3K 2,500 sh at $6.10
Sep 14 Vincent Capponi President and COO Open-market buy $12.5K 2,073 sh at $6.05
Sep 4 Phillip Chan CEO, Director Open-market buy $70K 200,000 sh at $0.35
Jun 15 Peter Mariani CFO Open-market buy $44K 100,000 sh at $0.44
Jun 15 Phillip Chan CEO, Director Open-market buy $4.44K 10,333 sh at $0.43
Jun 12 Phillip Chan CEO, Director Open-market buy $100K 251,136 sh at $0.40

Showing every filing. Dashed circles are routine: grants, tax withholding, option exercises and planned sales.

Top holders

Biggest funds in CTSO

As of Jun 30, 2026
FundOwnsValueChange
Avenir Corp8.3%$1.94M−1%
Neuberger Berman Group LLC3.1%$741K+17%
Vanguard Capital Management LLC3.0%$716K+2%
CM Management, LLC2.3%$552KSame
Skylands Capital, LLC1.9%$453K−29%

"Owns" is shares reported divided by shares outstanding.

Where this data comes from. Insider trades, fund holdings, activist stakes and company results come from public SEC EDGAR filings (Forms 4, 13F, 13D/13G, 10-Q and 8-K). Congress trades come from the STOCK Act reports members file with the House Clerk and the Senate. Daily closing prices come from post-no-preference/stocks on DoltHub, a community-run database shared under CC BY-SA 4.0; the prices we show stay under that license. They are each day's close, not live or official exchange prices.

This is data, not investment advice. About StockToast