John D. Halpern
Activist investor & 5%+ owner · SC 13D/13G filings
Total Filings
5
Stocks Covered
1
Latest Filing
May 16, 2025
Filings
ERNA
SC 13G/A 1 d770056dsc13ga.htm SC 13G/A SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (A MENDMENT N O . 1)* Eterna Therapeutics Inc.
SC 13G/A · Dec 5, 2022
8.8%
451K shares