Significant Ownership of John D. Halpern

Large-stake filing summary
  • Recent SEC Schedule 13D/G filings for John D. Halpern focus on large-stake beneficial ownership disclosures and amendments.
  • Use this view to spot new large holders, amended positions, and activist-style ownership evidence.

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Significant Ownership of John D. Halpern

Sym Company Class Ownership Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
ERNA Eterna Therapeutics Inc. Common Stock, par value $0.005 per share 9.6% $1,254,084 +$175,402 5,971,830 +16% John D. Halpern 31 Mar 2025
ERNA Ernexa Therapeutics Inc. Common Stock, par value $0.005 per share 5.6% $13,350 66,751 John D. Halpern 10 Feb 2026

Schedules 13D/G Reported by John D. Halpern:

Sym Target Class Ownership Change Current shares Change Value Reporting name Form Report period Filing date
Schedule rows are parsed from SEC 13D/G filings. Open the linked filing or target page to verify the reported ownership and shares.
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