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 Gerald M. Blumenstock.

Business address: Axcelis Technologies, Inc., 108 Cherry Hill Drive, Beverly, MA, 01915
Top holdings (ownership): ACLS

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Gerald M. Blumenstock has filed 9 SEC EDGAR filings since 12 Jun 2023

Recent SEC filings for Gerald M. Blumenstock including 4, 144, 3.

Form type	Document	Filing	Description	Filing date	Reporting date	File number(s)
4	Open 4 document	View SEC filing for 4		12 Dec 2025	11 Dec 2025	000-30941
144	Open 144 document	View SEC filing for 144		11 Dec 2025
4	Open 4 document	View SEC filing for 4		17 Jun 2025	16 Jun 2025	000-30941
4	Open 4 document	View SEC filing for 4		19 May 2025	15 May 2025	000-30941
4	Open 4 document	View SEC filing for 4		04 Mar 2025	28 Feb 2025	000-30941
4	Open 4 document	View SEC filing for 4		18 Jun 2024	17 Jun 2024	000-30941
4	Open 4 document	View SEC filing for 4		15 May 2024	15 May 2024	000-30941
4	Open 4 document	View SEC filing for 4	FORM 4 SUBMISSION	15 Jun 2023	15 Jun 2023	000-30941
3	Open 3 document	View SEC filing for 3	FORM 3 SUBMISSION	12 Jun 2023	12 Jun 2023	000-30941

Gerald M. Blumenstock files with the SEC under CIK 0001979418. 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.