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 Mark Leuchtenberger.

Business address: C/O Therion Biologics Corporation, 76 Rogers Street, Cambridge, MA, 02142
Top holdings (ownership): NRSN

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Mark Leuchtenberger has filed 12 SEC EDGAR filings since 20 Sep 2004

Recent SEC filings for Mark Leuchtenberger including 3, 4.

Form type	Document	Filing	Description	Filing date	Reporting date	File number(s)
3	Open 3 document	View SEC filing for 3		18 Mar 2026	18 Mar 2026	001-41084
4	Open 4 document	View SEC filing for 4	FORM 4 SUBMISSION	12 Feb 2016	10 Feb 2016	001-37500
3	Open 3 document	View SEC filing for 3	FORM 3 SUBMISSION	15 Jul 2015	15 Jul 2015	001-37500

Mark Leuchtenberger files with the SEC under CIK 0001303315. 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.