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 Brendan R. Winslow.

Business address: C/O Avidity Biosciences, Inc., 3020 Callan Road, San Diego, CA, 92121

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Brendan R. Winslow has filed 1 SEC EDGAR filings since 26 Feb 2026

Recent SEC filings for Brendan R. Winslow including 3.

Form type	Document	Filing	Description	Filing date	Reporting date	File number(s)
3	Open 3 document	View SEC filing for 3	3	26 Feb 2026	26 Feb 2026	001-43008

Brendan R. Winslow files with the SEC under CIK 0002105552. 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.