Filer Snapshot

John D. Halpern SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001234950.

Entity Type

Individual

Total Filings

12

Latest Filing

15 May 2025

Industry

n/a

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Go to latest filings table Open reporting owner context
Source: SEC Schedule 13D/G

SCHEDULE 13G/A filed on 15 May 2025 for CIK 0001234950.

View Source Filing
Top holdings (ownership)
ERNA and CMRA
Top holdings (Schedule 13G)
ERNA

Quick Takeaways

  • John D. Halpern is an SEC filer tracked under CIK 0001234950.
  • 12 filings are listed on this profile.
  • Common form coverage includes SCHEDULE 13G/A, SC 13G/A, 3 and more.

What Changed

  • Latest filing: SCHEDULE 13G/A filed on 15 May 2025.
  • Report period: not specified in filing header.

Why This Matters

  • You can quote filing dates and form types directly from the SEC record on this page.
  • Use this profile before deeper ownership or insider analysis to confirm filing history context.

Source Evidence

Source: SEC Schedule 13D/G

SCHEDULE 13G/A filed on 15 May 2025 for CIK 0001234950.

View Source Filing

Return Loop

Why revisit this filer page

A newly filed SCHEDULE 13G/A can change the filing history, ownership context, or next research path for John D. Halpern.

Latest source-backed update
SCHEDULE 13G/A filed 15 May 2025
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Revisit after a new SEC filing appears to compare the updated record with prior filings.
  • Latest filing on record: SCHEDULE 13G/A filed 15 May 2025.
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Filer freshness comes from SEC EDGAR submission history and related source-backed ownership or portfolio filings when available.

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Latest update

What changed recently for John D. Halpern

New filing available

Latest Schedule 13D/G period: 31 Mar 2025. Open the source-backed page to inspect the fresh filing or facts context.

Update date

15 May 2025

Page type

Filer profile

Latest period

31 Mar 2025

Schedule 13D/G context is visible from filings filed on 15 May 2025.

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Filer Overview

John D. Halpern has filed 12 SEC EDGAR filings since 02 Oct 2003. Common forms include SCHEDULE 13G/A, SC 13G/A, 3, 4 and more.

Reporting owner transactions Latest 13F filings

Latest Filings

Recent SEC filings for John D. Halpern with direct links to document and filing folders.

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.

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.