Filer Snapshot

Barbara Kosacz SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001763316.

Entity Type

Individual

Total Filings

28

Latest Filing

03 Jun 2025

Industry

n/a

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Review latest filings on this page Open reporting owner context
Business address
3175 Hanover Street, Palo Alto, CA, 94304
Top holdings (ownership)
KRON, XOMA, and CERO

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Quick Takeaways

  • Barbara Kosacz is an SEC filer tracked under CIK 0001763316.
  • 28 filings are listed on this profile.
  • Common form coverage includes 4, 3.

What Changed

  • Latest filing: 4 filed on 03 Jun 2025.
  • Report period: 30 May 2025.

Why This Matters

  • You can quote filing dates and form types directly from the SEC record on this page.
  • Use this profile before deeper ownership or insider analysis to confirm filing history context.

Official SEC Source

Official SEC Source

SEC EDGAR submissions for CIK 0001763316.

See Original Filing

Filer Overview

Barbara Kosacz has filed 28 SEC EDGAR filings since 03 Jan 2019. Common forms include 4, 3.

Reporting owner transactions Latest 13F filings

Latest Filings

Recent SEC filings for Barbara Kosacz with direct links to document and filing folders.

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open 4 document View SEC filing for 4 03 Jun 2025 30 May 2025 001-39503
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 23 May 2025 21 May 2025 001-39801
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 23 May 2025 21 May 2025 001-39801
4 Open 4 document View SEC filing for 4 24 May 2024 24 May 2024 001-39503
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 May 2024 15 May 2024 001-39801
4 Open 4 document View SEC filing for 4 16 Feb 2024 14 Feb 2024 001-40877
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 05 Jan 2024 04 Jan 2024 001-39592
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 22 May 2023 19 May 2023 001-39503
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 May 2023 17 May 2023 001-39801
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 17 Feb 2023 15 Feb 2023 001-39592
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 27 Jul 2022 25 Jul 2022 001-39592
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 27 May 2022 20 May 2022 001-39503
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 20 May 2022 18 May 2022 001-39801
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 17 Feb 2022 15 Feb 2022 001-39592
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 12 Oct 2021 08 Oct 2021 001-40877
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 05 Oct 2021 05 Oct 2021 001-40877
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 21 May 2021 19 May 2021 001-39801
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 08 Mar 2021 04 Mar 2021 001-39503
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 08 Mar 2021 04 Mar 2021 001-39503
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 14 Jan 2021 12 Jan 2021 001-39866
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 07 Jan 2021 07 Jan 2021 001-39866
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 Dec 2020 09 Dec 2020 001-39592
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 16 Oct 2020 14 Oct 2020 001-39592
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 08 Oct 2020 08 Oct 2020 001-39592
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 27 May 2020 20 May 2020 000-14710
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 20 May 2019 16 May 2019 000-14710
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Jan 2019 01 Jan 2019 000-14710
3 Open 3 document View SEC filing for 3 PRIMARY DOCUMENT 03 Jan 2019 01 Jan 2019 000-14710

About this filer

Barbara Kosacz files with the SEC under CIK 0001763316. This page aggregates EDGAR filings and related ownership activity.

FAQ

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.

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