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.

SEC EDGAR filings, ownership reports, and insider transactions for John Hugh MacDiarmid.

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John Hugh MacDiarmid has filed 2 SEC EDGAR filings since 07 Nov 2025

Recent SEC filings for John Hugh MacDiarmid including 4, 3.

Form type	Document	Filing	Description	Filing date	Reporting date	File number(s)
4	Open 4 document	View SEC filing for 4	STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES	22 Dec 2025	18 Dec 2025	001-42252
3	Open 3 document	View SEC filing for 3	OWNERSHIP DOCUMENT	07 Nov 2025	28 Oct 2025	001-42252

John Hugh MacDiarmid files with the SEC under CIK 0002092518. This page aggregates EDGAR filings and related ownership activity.

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.