John D. Halpern SEC EDGAR Filings (CIK 0001234950)

SEC EDGAR filings, ownership reports, and insider transactions for John D. Halpern.

Top holdings (ownership)
ERNA and CMRA
Top holdings (Schedule 13G)
ERNA
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John D. Halpern has filed 12 SEC EDGAR filings since 02 Oct 2003

Latest Filings

Recent SEC filings for John D. Halpern including SCHEDULE 13G/A, SC 13G/A, 3 and more.

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

About this filer

John D. Halpern files with the SEC under CIK 0001234950. This page aggregates EDGAR filings and related ownership activity.

See reporting owner transactions.

FAQ

What is a CIK?
A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
Why are some filings missing?
New filings appear as the SEC updates EDGAR, and older records can vary by availability.
How often is this page updated?
Updates follow new EDGAR submissions and periodic data refreshes.

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