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 Aaron Deykin.

Business address: Upstream Bio, Inc., 460 Totten Pond Road, Suite 420, Waltham, MA, 02451
Top holdings (ownership): UPB

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Aaron Deykin has filed 3 SEC EDGAR filings since 10 Oct 2024

Recent SEC filings for Aaron Deykin including 4, 3.

Form type	Document	Filing	Description	Filing date	Reporting date	File number(s)
4	Open 4 document	View SEC filing for 4	4	06 Jan 2026	02 Jan 2026	001-42366
4	Open 4 document	View SEC filing for 4	4	07 Feb 2025	06 Feb 2025	001-42366
3	Open 3 document	View SEC filing for 3	3	10 Oct 2024	10 Oct 2024	001-42366

Aaron Deykin files with the SEC under CIK 0002031693. 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.