Cytosorbents Crp (CTSO) insider buying
14 open-market purchases of CTSO by Cytosorbents Crp's executives and directors since May 2023, worth $229,824 in total, from SEC Form 4 filings.
The most recent: Alan D. Sobel, Director bought $11,628 on September 15, 2026.
The biggest buyer over the period is Phillip P. Chan (Chief Executive Officer): 2 purchases, $92,644.
By year
| Year | Purchases | Value |
|---|---|---|
| 2026 | 7 | $120,435 |
| 2024 | 2 | $29,313 |
| 2023 | 5 | $80,076 |
Biggest buyers
| Insider | Buys | Value |
|---|---|---|
| Phillip P. Chan Chief Executive Officer | 2 | $92,644 |
| Kathleen P Bloch | 2 | $40,505 |
| Alan D Sobel | 1 | $30,001 |
| Peter J Mariani | 2 | $29,313 |
| Alan D. Sobel Director | 3 | $15,254 |
| Vincent Capponi President and COO | 2 | $12,537 |
| Michael G Bator | 2 | $9,570 |
Every purchase
Newest first. From SEC Form 4 filings. Insider buying across the market.
| Date | Insider | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Sep 15, 2026 | Alan D. Sobel Director |
1,900 | $6.12 | $11,628 | Form 4 |
| Sep 15, 2026 | Phillip P. Chan Chief Executive Officer |
3,774 | $6.00 | $22,644 | Form 4 |
| Sep 15, 2026 | Alan D. Sobel Director |
100 | $6.01 | $601 | Form 4 |
| Sep 15, 2026 | Alan D. Sobel Director |
500 | $6.05 | $3,025 | Form 4 |
| Sep 14, 2026 | Vincent Capponi President and COO |
273 | $5.90 | $1,611 | Form 4 |
| Sep 14, 2026 | Vincent Capponi President and COO |
1,800 | $6.07 | $10,926 | Form 4 |
| Sep 4, 2026 | Phillip P. Chan Chief Executive Officer |
200,000 | $0.35 | $70,000 | Form 4 |
| Dec 13, 2024 | Peter J Mariani |
20,000 | $0.96 | $19,200 | Form 4 |
| Dec 11, 2024 | Peter J Mariani |
11,363 | $0.89 | $10,113 | Form 4 |
| Dec 13, 2023 | Alan D Sobel |
22,557 | $1.33 | $30,001 | Form 4 |
| Aug 7, 2023 | Michael G Bator |
2,000 | $3.17 | $6,340 | Form 4 |
| Aug 4, 2023 | Michael G Bator |
1,000 | $3.23 | $3,230 | Form 4 |
| May 25, 2023 | Kathleen P Bloch |
3,300 | $2.85 | $9,405 | Form 4 |
| May 10, 2023 | Kathleen P Bloch |
10,000 | $3.11 | $31,100 | Form 4 |
Questions
Are Cytosorbents Crp insiders buying the stock?
14 open-market purchases of CTSO by Cytosorbents Crp's executives and directors since May 2023, worth $229,824 in total, from SEC Form 4 filings. The most recent: Alan D. Sobel, Director bought $11,628 on September 15, 2026.
What counts as insider buying here?
Open-market purchases (Form 4 code P) by officers and directors. Option exercises, grants and purchases by 10% owners are left out.
From Cytosorbents Crp's annual reports filed with the SEC (XBRL data), standardised by Investingly. Information only, not investment advice.