Greedy Insider
Cytosorbents Corp (CTSO) Insider Trades and Scores
Cytosorbents Corp (CTSO) insider trades: since Nov 18, 2025, Greedy Insider recorded 11 open-market buys and 0 sales on Form 4 from 4 insiders. The strongest recent filing scored 81 (Strong).
Who bought and who sold
Across the last 11 scoreable Form 4 transactions in CTSO, 11 were open-market purchases and 0 were sales. The table lists the most recent filings with each one's Greediness Score, so the structurally unusual trades are easy to spot first.
| Insider | Role | Type | Shares | Date | Score | ||
|---|---|---|---|---|---|---|---|
| Chan Phillip P. | CEO | Buy | 3774.0 | 22644.0 | 2026-09-15 | 61 | View |
| Sobel Alan D. | Director | Buy | 1900.0 | 11628.0 | 2026-09-15 | 78 | View |
| Sobel Alan D. | Director | Buy | 500.0 | 3025.0 | 2026-09-15 | 67 | View |
| Sobel Alan D. | Director | Buy | 100.0 | 601.0 | 2026-09-15 | 54 | View |
| Capponi Vincent | President | Buy | 1800.0 | 10926.0 | 2026-09-14 | 81 | View |
| Capponi Vincent | President | Buy | 273.0 | 1610.7 | 2026-09-14 | 63 | View |
| Chan Phillip P. | CEO | Buy | 200000.0 | 70000.0 | 2026-09-04 | 74 | View |
| Chan Phillip P. | CEO | Buy | 10333.0 | 4443.19 | 2026-06-15 | 54 | View |
| MARIANI PETER J | CFO | Buy | 100000.0 | 44000.0 | 2026-06-15 | 72 | View |
| Chan Phillip P. | CEO | Buy | 251136.0 | 100454.4 | 2026-06-12 | 80 | View |
The strongest recent filing
Capponi Vincent (President) bought 1,800 shares of Cytosorbents Corp on Sep 14, 2026, a filing that scored 81 (Strong). It scored Strong because a senior insider was trading and it was direct personal ownership. The score describes the filing, not future returns. This is not investment advice.
Cluster activity
A cluster buy is present: 3 insiders (Chan Phillip P., Sobel Alan D., Capponi Vincent) traded CTSO the same direction within a 7-day window. Shared conviction is a stronger structural signal than a lone trade.
How this compares with Cytosorbents Corp's own history
Open-market buys make up 100% of the 11 scoreable CTSO transactions on record between Nov 18, 2025 and Sep 15, 2026. Comparing a filing with the company's own buy/sell mix is how you tell a routine disposal from an unusual accumulation.
Methodology and sources
Scores come from six published, user-adjustable factors (insider role, cluster activity, trade size versus the insider's own history, position impact, filing urgency, and direct versus indirect ownership). The score describes the filing, not future returns. This is not investment advice.
Key facts
- Scoreable Form 4 transactions on record: 11
- Open-market buys: 11
- Sales: 0
- Distinct insiders: 4
- Strongest recent Greediness Score: 81 (Strong)
Primary sources
Related
- Strongest filing
- CTSO in the live feed
- How the Greediness Score works
- What is a cluster buy?
- Form 4 transaction codes
The score describes the filing, not future returns. This is not investment advice.