Filer Snapshot

Stephen W. Webster SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001438421.

Entity Type

Individual

Total Filings

73

Latest Filing

24 Jun 2025

Industry

n/a

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Go to latest filings table Open reporting owner context
Source: SEC Forms 3/4/5

4 filed on 24 Jun 2025 for CIK 0001438421.

View Source Filing
Business address
C/O Cullinan Therapeutics, Inc., 1 Main Street Suite 1350, Cambridge, MA, 02142
Top holdings (ownership)
GRTS and NBRV

Quick Takeaways

  • Stephen W. Webster is an SEC filer tracked under CIK 0001438421.
  • 73 filings are listed on this profile.
  • Common form coverage includes 4, 3.

What Changed

  • Latest filing: 4 filed on 24 Jun 2025.
  • Report period: 20 Jun 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.

Source Evidence

Source: SEC Forms 3/4/5

4 filed on 24 Jun 2025 for CIK 0001438421.

View Source Filing

Return Loop

Why revisit this filer page

A newly filed 4 can change the filing history, ownership context, or next research path for Stephen W. Webster.

Latest source-backed update
4 filed 24 Jun 2025
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Revisit after a new SEC filing appears to compare the updated record with prior filings.
  • Latest filing on record: 4 filed 24 Jun 2025.
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Filer freshness comes from SEC EDGAR submission history and related source-backed ownership or portfolio filings when available.

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Latest update

What changed recently for Stephen W. Webster

Ownership report updated

Latest ownership report period: 20 Jun 2025. Open the source-backed page to inspect the fresh filing or facts context.

Update date

24 Jun 2025

Page type

Ownership filings

Latest period

20 Jun 2025

Ownership context was refreshed from SEC Forms 3/4/5 filed on 24 Jun 2025.

Open ownership filings Browse recent public updates

Filer Overview

Stephen W. Webster has filed 73 SEC EDGAR filings since 24 Jun 2008. Common forms include 4, 3.

Reporting owner transactions Latest 13F filings

Latest Filings

Recent SEC filings for Stephen W. Webster 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 24 Jun 2025 20 Jun 2025 001-38905
4 Open 4 document View SEC filing for 4 4 16 Jun 2025 12 Jun 2025 001-39856
4 Open 4 document View SEC filing for 4 08 Apr 2025 04 Apr 2025 001-38663
4 Open 4 document View SEC filing for 4 4 27 Jun 2024 26 Jun 2024 001-39856
4 Open 4 document View SEC filing for 4 21 Jun 2024 20 Jun 2024 001-38905
4 Open 4 document View SEC filing for 4 20 Jun 2024 17 Jun 2024 001-38663
4 Open 4 document View SEC filing for 4 30 Apr 2024 26 Apr 2024 001-38663
3 Open 3 document View SEC filing for 3 30 Apr 2024 26 Apr 2024 001-38663
4 Open 4 document View SEC filing for 4 23 Jun 2023 22 Jun 2023 001-38905
4 Open 4 document View SEC filing for 4 4 12 Jun 2023 08 Jun 2023 001-39856
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 01 Jun 2023 01 Jun 2023 001-38811
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 19 Dec 2022 15 Dec 2022 001-38811
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 04 Aug 2022 02 Aug 2022 001-37558
4 Open 4 document View SEC filing for 4 FORM 4 24 Jun 2022 23 Jun 2022 001-38905
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 23 Jun 2022 22 Jun 2022 001-39856
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 25 Mar 2022 16 Sep 2021 001-39856
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 10 Dec 2021 09 Dec 2021 001-38811
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 04 Aug 2021 02 Aug 2021 001-37558
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 30 Jul 2021 28 Jul 2021 001-37558
4 Open 4 document View SEC filing for 4 FORM 4 28 Jun 2021 24 Jun 2021 001-38905
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 07 Jan 2021 07 Jan 2021 001-39856
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 11 Dec 2020 10 Dec 2020 001-38811
4 Open 4 document View SEC filing for 4 4 31 Jul 2020 29 Jul 2020 001-37558
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 15 Jun 2020 11 Jun 2020 001-38905
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 04 May 2020 30 Apr 2020 001-38811
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 04 May 2020 30 Apr 2020 001-38811
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Jan 2020 02 Jan 2020 001-37355
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 17 Dec 2019 17 Dec 2019 001-36819
4 Open 4 document View SEC filing for 4 4 01 Aug 2019 31 Jul 2019 001-37558
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 Jun 2019 13 Jun 2019 001-38905
3 Open 3 document View SEC filing for 3 PRIMARY DOCUMENT 08 May 2019 08 May 2019 001-38905
4 Open 4 document View SEC filing for 4 FORM 4 23 Jan 2019 18 Jan 2019 001-36819
4 Open 4 document View SEC filing for 4 FORM 4 17 Jan 2019 15 Jan 2019 001-36819
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Jan 2019 02 Jan 2019 001-37355
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 31 May 2018 29 May 2018 001-37355
4 Open 4 document View SEC filing for 4 4 23 May 2018 23 May 2018 001-37558
4 Open 4 document View SEC filing for 4 4 04 May 2018 02 May 2018 001-37558
4 Open 4 document View SEC filing for 4 FORM 4 22 Jan 2018 18 Jan 2018 001-36819
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Jan 2018 02 Jan 2018 001-37355
4 Open 4 document View SEC filing for 4 FORM 4 20 Nov 2017 16 Nov 2017 001-36819
4 Open 4 document View SEC filing for 4 4 19 Sep 2017 15 Sep 2017 001-37558
4 Open 4 document View SEC filing for 4 FORM 4 15 Aug 2017 15 Aug 2017 001-36819
4 Open 4 document View SEC filing for 4 FORM 4 02 Aug 2017 31 Jul 2017 001-36819
4 Open 4 document View SEC filing for 4 4 27 Jun 2017 23 Jun 2017 001-38132
4 Open 4 document View SEC filing for 4 FORM 4 21 Jun 2017 19 Jun 2017 001-36819
4 Open 4 document View SEC filing for 4 FORM 4 26 Apr 2017 24 Apr 2017 001-36819
4 Open 4 document View SEC filing for 4 FORM 4 20 Jan 2017 18 Jan 2017 001-36819
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 05 Jan 2017 03 Jan 2017 001-37355
3 Open 3 document View SEC filing for 3 3 30 Dec 2016 30 Dec 2016 001-37558
4 Open 4 document View SEC filing for 4 FORM 4 24 May 2016 20 May 2016 001-36819
4 Open 4 document View SEC filing for 4 FORM 4 07 Jan 2016 05 Jan 2016 001-36819
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 06 Jan 2016 04 Jan 2016 001-37355
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 09 Oct 2015 07 Oct 2015 001-36819
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 30 Apr 2015 28 Apr 2015 001-37355
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 28 Apr 2015 28 Apr 2015 001-37355
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 18 Mar 2015 16 Mar 2015 001-36819
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 06 Feb 2015 04 Feb 2015 001-36819
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 29 Jan 2015 29 Jan 2015 001-36819
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 28 Oct 2013 24 Oct 2013 001-33291
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 28 Feb 2013 26 Feb 2013 001-33291
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Jul 2012 29 Jun 2012 001-33291
3 Open 3 document View SEC filing for 3 PRIMARY DOCUMENT 02 Jul 2012 25 Jun 2012 001-33291
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 14 Dec 2011 12 Dec 2011 000-30039
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 Aug 2011 09 Aug 2011 000-30039
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 27 Jun 2011 27 Jun 2011 000-30039
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Sep 2010 09 Sep 2010 000-30039
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 14 Jun 2010 10 Jun 2010 001-11655

About this filer

Stephen W. Webster files with the SEC under CIK 0001438421. 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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