CIK 0001175151 · Non-accelerated filer<br>Smaller reporting company
Cytosorbents Corp
Sign in to watch- Ticker
- CTSO
- Exchange
- Nasdaq
- Industry
- Surgical & Medical Instruments & Apparatus
- FY end
- Dec 31
- Incorporated
- DE
- Entity type
- operating
- EIN
- 980373793
- Phone
- 973-329-8885
- Business address
- 305 COLLEGE ROAD EAST, PRINCETON, NJ, 08540
- Former names
- MedaSorb Technologies CORP, GILDER ENTERPRISES INC
- Open-market buys, last 90 days
- $120,435
- in 4 filings
- Open-market sales, last 90 days
- $0
- in 0 filings
Net +$120,435. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
Reading 63 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-09-15 | Chan Phillip P. Chief Executive Officer | Purchase | +3,774 | $6.00 | $23K | 100,996 |
| 2026-09-15 | Sobel Alan D. Director | Purchase | +1,900 | $6.12 | $12K | 9,287 |
| 2026-09-15 | Sobel Alan D. Director | Purchase | +500 | $6.05 | $3K | 9,787 |
| 2026-09-15 | Sobel Alan D. Director | Purchase | +100 | $6.01 | $601 | 9,887 |
| 2026-09-14 | Capponi Vincent President and COO | Purchase | +1,800 | $6.07 | $11K | 40,114 |
| 2026-09-14 | Capponi Vincent President and COO | Purchase | +273 | $5.90 | $2K | 40,387 |
| 2026-09-04 | Chan Phillip P. Chief Executive Officer | Purchase | +200,000 | $0.35 | $70K | 1,944,432 |
| 2026-06-15 | MARIANI PETER J Chief Financial Officer | Purchase | +100,000 | $0.44 | $44K | 638,113 |
| 2026-06-15 | Chan Phillip P. Chief Executive Officer | Purchase | +10,333 | $0.43 | $4K | 1,744,432 |
| 2026-06-12 | Chan Phillip P. Chief Executive Officer | Purchase | +251,136 | $0.40 | $100K | 1,734,099 |
| 2025-11-18 | Chan Phillip P. Chief Executive Officer | Grant or award | +100,000 | $0.64 | $64K | 1,482,963 |
| 2025-08-08 | Chan Phillip P. Chief Executive Officer | Grant or award | +105,600 | 1,382,963 | ||
| 2025-08-08 | Chan Phillip P. Chief Executive Officer | Grant or award · Stock Option (Right to Buy) | +136,400 | 136,400 | ||
| 2025-08-08 | Jones Edward Raymond Director | Grant or award · Stock Option (Right to Buy) | +22,000 | 22,000 | ||
| 2025-08-08 | BATOR MICHAEL G. Director | Grant or award · Stock Option (Right to Buy) | +44,000 | 44,000 | ||
| 2025-08-08 | MARIANI PETER J Chief Financial Officer | Grant or award | +71,500 | 538,113 | ||
| 2025-08-08 | MARIANI PETER J Chief Financial Officer | Grant or award · Stock Option (Right to Buy) | +90,000 | 90,000 | ||
| 2025-08-08 | Kim Jiny Director | Grant or award · Stock Option (Right to Buy) | +22,000 | 22,000 | ||
| 2025-08-08 | Capponi Vincent President and COO | Grant or award | +89,100 | 766,268 | ||
| 2025-08-08 | Capponi Vincent President and COO | Grant or award · Stock Option (Right to Buy) | +111,100 | 111,100 |
Page 1 of 35 · 698 trades