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 Mossler.

Business address: C4 Therapeutics, Inc., 490 Arsenal Way, Suite 120, Watertown, MA, 02472
Top holdings (ownership): CCCC

Get insider transactions for this reporting owner

Mark Mossler has filed 3 SEC EDGAR filings since 19 Sep 2023

Recent SEC filings for Mark Mossler including 4, 3.

Form type	Document	Filing	Description	Filing date	Reporting date	File number(s)
4	Open 4 document	View SEC filing for 4	FORM 4	18 Feb 2025	14 Feb 2025	001-39567
4	Open 4 document	View SEC filing for 4	FORM 4	10 Apr 2024	14 Feb 2024	001-39567
3	Open 3 document	View SEC filing for 3	FORM 3	19 Sep 2023	18 Sep 2023	001-39567

Mark Mossler files with the SEC under CIK 0001992219. 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.