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 Margaret D. Klein.

Business address: C/O American Superconductor Corporation, 114 East Main Street, Ayer, MA, 01432
Top holdings (ownership): AMSC

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Margaret D. Klein has filed 6 SEC EDGAR filings since 13 Jun 2022

Recent SEC filings for Margaret D. Klein including 4, 3.

Form type	Document	Filing	Description	Filing date	Reporting date	File number(s)
4	Open 4 document	View SEC filing for 4	4	06 Aug 2025	04 Aug 2022	000-19672
4	Open 4 document	View SEC filing for 4	4	04 Apr 2025	03 Apr 2025	000-19672
4	Open 4 document	View SEC filing for 4	4	04 Apr 2024	03 Apr 2024	000-19672
4	Open 4 document	View SEC filing for 4	FORM 4 SUBMISSION	07 Apr 2023	05 Apr 2023	000-19672
4	Open 4 document	View SEC filing for 4	FORM 4 SUBMISSION	14 Jun 2022	10 Jun 2022	000-19672
3	Open 3 document	View SEC filing for 3	FORM 3 SUBMISSION	13 Jun 2022	10 Jun 2022	000-19672

Margaret D. Klein files with the SEC under CIK 0001933357. 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.