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 Michael Mendelsohn.

Business address: C/O Cyclerion Therapeutics, Inc., 301 Binney Street, Cambridge, MA, 02142
Top holdings (ownership): FHTX

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Michael Mendelsohn has filed 15 SEC EDGAR filings since 06 Nov 2013

Recent SEC filings for Michael Mendelsohn including 4, 3.

Form type	Document	Filing	Description	Filing date	Reporting date	File number(s)
4	Open 4 document	View SEC filing for 4	PRIMARY DOCUMENT	17 Jun 2025	17 Jun 2025	001-39634
4	Open 4 document	View SEC filing for 4	PRIMARY DOCUMENT	28 Jun 2024	26 Jun 2024	001-39634
4	Open 4 document	View SEC filing for 4	PRIMARY DOCUMENT	22 Jun 2023	21 Jun 2023	001-39634
4	Open 4 document	View SEC filing for 4	PRIMARY DOCUMENT	22 Jun 2022	21 Jun 2022	001-39634
4	Open 4 document	View SEC filing for 4	FORM 4	16 Jun 2022	14 Jun 2022	001-38787
4	Open 4 document	View SEC filing for 4	PRIMARY DOCUMENT	14 Jul 2021	13 Jul 2021	001-39634
4	Open 4 document	View SEC filing for 4	FORM 4	28 Jun 2021	24 Jun 2021	001-38787
3	Open 3 document	View SEC filing for 3	FORM 3 SUBMISSION	22 Oct 2020	22 Oct 2020	001-39634
4	Open 4 document	View SEC filing for 4	FORM 4 SUBMISSION	18 Jun 2020	16 Jun 2020	001-38787
4	Open 4 document	View SEC filing for 4	FORM 4 SUBMISSION	04 Jun 2019	01 Jun 2019	001-38787
4	Open 4 document	View SEC filing for 4	FORM 4 SUBMISSION	03 Apr 2019	01 Apr 2019	001-38787
3	Open 3 document	View SEC filing for 3	FORM 3 SUBMISSION	03 Apr 2019	01 Apr 2019	001-38787
4	Open 4 document	View SEC filing for 4	FORM 4 SUBMISSION	05 Jan 2015	01 Jan 2015	001-35953
4	Open 4 document	View SEC filing for 4	FORM 4	03 Jan 2014	01 Jan 2014	001-35953
3	Open 3 document	View SEC filing for 3	FORM 3	06 Nov 2013	04 Nov 2013	001-35953

Michael Mendelsohn files with the SEC under CIK 0001591109. 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.