AVENIR CORP

Activist investor & 5%+ owner · SC 13D/13G filings

Total Filings

2

Stocks Covered

1

Latest Filing

Feb 13, 2026

Filings

CTSO

Cytosorbents Corp

SC 13G/A · Feb 13, 2026

8.3%

5.2M shares

CTSO

Cytosorbents Corp

SC 13G/A · Feb 14, 2025

5.7%

3.1M shares