---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-031979"
form_type: "8-K"
ticker: "CTSO"
cik: "0001175151"
company_name: "Cytosorbents Corp"
filed_at: "2025-04-04T23:59:59+00:00"
generated_at: "2026-05-23T20:42:22.604018+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# CytoSorbents extends Series B Right Warrant expiration to June 10, 2025

## Summary
- Expiration date extended from April 10, 2025 to June 10, 2025.
- Exercise price set at 90% of 5-day VWAP, with floor $2.00 and cap $4.00.
- Approximately 4.8 million shares of common stock remain reserved for warrant exercise.
- Holders must pay the maximum $4.00 per warrant; difference refunded based on final price.

## SEC filing metadata
- accession: 0001104659-25-031979
- form_type: 8-K
- ticker: CTSO
- cik: 0001175151
- company_name: Cytosorbents Corp
- filed_at: 2025-04-04T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1175151/000110465925031979/0001104659-25-031979-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1175151/000110465925031979/tm2511160d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-031979
- JSON: https://secwatch.observer/filing/0001104659-25-031979.json
- Plain text: https://secwatch.observer/filing/0001104659-25-031979.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.