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 Sergio L. Santillana.

Business address: Merrimack Pharmaceuticals, Inc., One Kendall Square, Suite B7201, Cambridge, MA, 02139

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Sergio L. Santillana has filed 8 SEC EDGAR filings since 15 Jun 2017

Recent SEC filings for Sergio L. Santillana including 4, 3/A, 3.

Form type	Document	Filing	Description	Filing date	Reporting date	File number(s)
4	Open 4 document	View SEC filing for 4	FORM 4 SUBMISSION	05 Jan 2023	03 Jan 2023	001-40287
4	Open 4 document	View SEC filing for 4	FORM 4 SUBMISSION	04 Feb 2022	02 Feb 2022	001-40287
3/A	Open 3/A document	View SEC filing for 3/A	FORM 3/A SUBMISSION	30 Mar 2021	25 Mar 2021	001-40287
3	Open 3 document	View SEC filing for 3	FORM 3 SUBMISSION	25 Mar 2021	25 Mar 2021	001-40287
4	Open 4 document	View SEC filing for 4	FORM 4 SUBMISSION	13 Dec 2018	11 Dec 2018	001-35409
4	Open 4 document	View SEC filing for 4	FORM 4 SUBMISSION	16 Feb 2018	15 Feb 2018	001-35409
4	Open 4 document	View SEC filing for 4	FORM 4 SUBMISSION	15 Jun 2017	13 Jun 2017	001-35409
3	Open 3 document	View SEC filing for 3	FORM 3 SUBMISSION	15 Jun 2017	12 Jun 2017	001-35409

Sergio L. Santillana files with the SEC under CIK 0001708767. 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.