CTSO — Cytosorbents Corp
4 Form 4 filings from 3 reporting persons. Open-market rows (codes P and S) are the decisions; grants, exercises and withholding are shown but not counted as flow. Rows dropped by our data checks are excluded.
Open-market flow
Definition: 3 or more distinct insiders reported open-market purchases within a 10-trading-day window, and the net open-market flow over the whole period shown is positive. The label is data, not a judgement.
Filings
| Filed | Reporting person | Codes | Rows | Buys | Sells | Accept → seen | Filing |
|---|---|---|---|---|---|---|---|
| Sep 09, 2026 | Chan Phillip P. · Chief Executive Officer | P | 1 | $70,000 | — | 10 min 38 s | 0001104659-26-106308 |
| Sep 16, 2026 | Sobel Alan D. · Director | P | 3 | $15,254 | — | 10 min 30 s | 0001104659-26-108246 |
| Sep 16, 2026 | Capponi Vincent · President and COO | P | 2 | $12,537 | — | 10 min 14 s | 0001104659-26-108247 |
| Sep 16, 2026 | Chan Phillip P. · Chief Executive Officer | P | 1 | $22,644 | — | 0 min 40 s | 0001104659-26-108326 |
"Accept → seen" is measured per filing from SEC acceptance to our first read; "index" means the filing reached us through EDGAR's daily index and the interval is not measured. Filings without a link did not meet our page threshold or were withdrawn by a check; rows excluded by our data checks are not in the flow above.
Reading
The most ordinary reading of several insiders buying in the same window is directors and officers adding to holdings in an open trading window, often after results are public. Form 4 does not state a reason, and this page does not infer one.
Scope: SEC Form 4, Table I (non-derivative) only — Table II (options, RSUs) is not shown; on multi-owner filings the first reporting owner; Senate PTRs are covered, House is not. Every filing is reconciled daily against EDGAR's own index — see coverage.
Generated 2026-09-16 21:31 UTC from our reconciled ledger. Found an error? hello@followthefilings.io.