Follow the Filings · Data · CTSO · Form 4
SEC Form 4 · CTSO · filed Sep 16, 2026

CTSO: director bought $15,254 of Cytosorbents Corp

The filing shows 3 Table I transactions by a director of Cytosorbents Corp: bought $15,254. Source document and our reading of it are below; the SEC filing is the record, this page is the index.

Freshness

16:05:14SEC acceptance (ET) · Sep 16, 2026
16:15:44first seen by FTF (ET) · SEC current-filings feed
10 min 30 sacceptance → first seen

UTC: accepted 2026-09-16T20:05:14Z · seen 2026-09-16T20:15:44Z. Measured per filing; the distribution for every day is on coverage.

What the filing shows (Table I)

Trade dateCodeSharesPriceValueOwned after
Sep 15, 2026P · Open-market or private purchase1,900$6.12$11,6289,287
Sep 15, 2026P · Open-market or private purchase500$6.05$3,0259,787
Sep 15, 2026P · Open-market or private purchase100$6.01$6019,887
Reporting person
Sobel Alan D. · Director
Issuer
Cytosorbents Corp · CIK 1175151
Accession
0001104659-26-108246
Source
SEC filing index · complete submission
Rule 10b5-1
checkbox not captured by our parser yet — check the filing

Checks

Cluster buyPrice check: consistent

filing price is 1.01× the 2026-09-15 close (close $6.06 on 2026-09-15). Band: filing price within 0.4–2.5× of the last market close on or before the trade date; a filing outside the band is not published. Rows dropped by our data checks (duplicates, superseded amendments, impossible values, bulk program events, price outside the band) are excluded from every number on this page.

CTSO insider flow — 30 days to this filing

$120,435open-market buys · 7 rows · 3 insiders
$0open-market sells · 0 rows · 0 insiders
+$120,435net open-market flow
Cluster buy — 3 distinct insiders, $120,435 of open-market purchases between Sep 04, 2026 and Sep 15, 2026.
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.
FiledReporting personCodesRowsBuysSellsFiling
Sep 09, 2026Chan Phillip P. · Chief Executive OfficerP1$70,000—0001104659-26-106308
Sep 16, 2026Sobel Alan D. · DirectorP3$15,254—0001104659-26-108246 (this filing)
Sep 16, 2026Capponi Vincent · President and COOP2$12,537—0001104659-26-108247
Sep 16, 2026Chan Phillip P. · Chief Executive OfficerP1$22,644—0001104659-26-108326

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. Amended filings (Form 4/A) replace this page with a notice, they do not delete it. Found an error? hello@followthefilings.io.