- Info
- Significant Ownership
- Insider Ownership
Significant Ownership of John D. Halpern
- Summary
- This page shows a list of all the recent SCHEDULE 13D/G filings made by John D. Halpern.
Follow Filing Activity
Follow John D. Halpern and return when a new Schedule 13D/G filing changes the record on this page.
This uses the existing product follow flow to surface future filing-backed changes without guessing what they mean.
Useful next steps after a schedule filing
Use the page below that answers the next obvious question about this reporting manager or security.
- Latest 13D/G reports to compare this manager with other current ownership disclosures.
- Latest insider ownership reports if you want insider activity alongside the beneficial ownership record.
- Latest 13F portfolio filings for broader institutional context.
- Latest investment quarter holder pages when the next step is security-level holder history.
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 |
Schedules 13D/G Reported by John D. Halpern:
| Sym | Target | Class | Ownership | Change | Current Shares | Change | Value | Reporting name | Form | Report Period | Filing Date |
|---|
* An asterisk sign (*) next to the price indicates that the price is likely invalid.