Cytosorbents Corp (CTSO)

SEC FORM 4CLUSTER · 3 INSIDERS

$50,434.70

Purchase of 8,347 shares across 3 reporting persons.

Transaction Code P · Reporting Persons 3

Capponi Vincent, President and COOPurchase of 1,800 shares at $6.07 per share.$10,926.00
Capponi Vincent, President and COOPurchase of 273 shares at $5.90 per share.$1,610.70
Sobel Alan D.Purchase of 1,900 shares at $6.12 per share.$11,628.00
Sobel Alan D.Purchase of 500 shares at $6.05 per share.$3,025.00
Sobel Alan D.Purchase of 100 shares at $6.01 per share.$601.00
Chan Phillip P., Chief Executive OfficerPurchase of 3,774 shares at $6.00 per share.$22,644.00

Surfaced by rule: 3 distinct insiders, open-market purchases, 7-day window — a deterministic filter, not a recommendation.

Traded Sep 14, 2026 · Disclosed Sep 16, 2026

Source: SEC Form 4 · 0001104659-26-108247 · filed 2026-09-16 · View filing →

Source: SEC Form 4 · 0001104659-26-108246 · filed 2026-09-16 · View filing →

Source: SEC Form 4 · 0001104659-26-108326 · filed 2026-09-16 · View filing →

SEC FORM 4

$70,000.00

Purchase of 200,000 shares at $0.35 per share.

Reporting Person Chan Phillip P. · Officer Title Chief Executive Officer · Transaction Code P

Traded Sep 4, 2026 · Disclosed Sep 9, 2026

Source: SEC Form 4 · 0001104659-26-106308 · filed 2026-09-09 · View filing →