JOHN D. HALPERN

Top holdings (ownership)
ERNA and CMRA
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JOHN D. HALPERN has filed 12 SEC EDGAR filings since 02 Oct 2003

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
SCHEDULE 13G/A Open Document Open Filing 15 May 2025
SCHEDULE 13G/A Open Document Open Filing 14 Feb 2025
SC 13G/A Open Document Open Filing SC 13G/A 31 Jan 2024
3 Open Document Open Filing INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES 08 Jan 2024 27 Dec 2023 001-41403
SC 13G/A Open Document Open Filing SC 13G/A 31 Jan 2023
4 Open Document Open Filing STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 05 Dec 2022 02 Dec 2022 001-11460
SC 13G/A Open Document Open Filing SC 13G/A 05 Dec 2022
SC 13G Open Document Open Filing SC 13G 24 May 2021
3 Open Document Open Filing PRIMARY DOCUMENT 19 May 2021 25 Mar 2021 001-11460