LYTIR

Company · CTSO

Cytosorbents Corporation

Name as listed on its exchange; filed with the SEC as Cytosorbents Corp.

Nasdaq's symbol directory lists CTSO on Nasdaq as “Cytosorbents Corporation - Common Stock”.

In the 12 months to Nov 8, 2026: insiders bought on 6 occasions ($199K); 1 company report (Form 8-K, since May 26, 2026).

All insider filings at the SEC

Insider purchases and sales, by month (last 12 months)Insider purchases: $199K in total; Insider sales: $0 in total.Jun: Insider purchases $149KSep: Insider purchases $50KDecJanFebMarAprMayJunJulAugSepOctNov
Insider purchases above the line: $199KInsider sales below: $0
Dollar value of open-market purchases and sales reported on SEC Form 4, by the month traded. Sales include pre-arranged 10b5-1 plan sales.

Insider trades · SEC Form 4

Those inside the hall

Open-market purchases and sales only. Legs one person filed for one day are combined.

Who traded

  1. Phillip P. Chan, Chief Executive Officer bought on 3 days latest Sep 15, 2026 bought $128K
  2. Peter J. Mariani, Chief Financial Officer bought on 1 day latest Jun 15, 2026 bought $44K
  3. Sobel Alan D. bought on 1 day latest Sep 15, 2026 bought $15K
  4. Capponi Vincent, President and COO bought on 1 day latest Sep 14, 2026 bought $13K
Every trade (6)
  1. BUYPhillip P. Chan, Chief Executive Officer bought Sep 15, 2026 3,774 shares filing $23K
  2. BUYSobel Alan D. bought Sep 15, 2026 2,500 shares 3 legs combined filing $15K
  3. BUYCapponi Vincent, President and COO bought Sep 14, 2026 2,073 shares 2 legs combined filing $13K
  4. BUYPeter J. Mariani, Chief Financial Officer bought Jun 15, 2026 100,000 shares filing $44K
  5. BUYPhillip P. Chan, Chief Executive Officer bought Jun 15, 2026 10,333 shares filing $4K
  6. BUYPhillip P. Chan, Chief Executive Officer bought Jun 12, 2026 251,136 shares filing $100K

Company reports · SEC Form 8-K

In its own words

Current reports the company filed with the SEC; most items are due within four business days of the event. Each line lists the report's items by the SEC's own titles; the filing says what happened. Reports collected since May 26, 2026; every 8-K at the SEC.

  1. Regulation FD disclosure; Other events filing Sep 23, 2026

Sources: SEC EDGAR (Forms 4, 144 and 8-K) and STOCK Act periodic transaction reports. Filings can be late, amended or wrong at the source; see methodology.