Filer Snapshot

Henderson John T. SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001226488.

Entity Type

Individual

Total Filings

120

Latest Filing

15 Apr 2026

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 15 Apr 2026 for CIK 0001226488.

View Source Filing
Business address
C/O Cytokinetics, Incorporated, 350 Oyster Point Blvd, South San Francisco, CA, 94080
Top holdings (ownership)
CYTK

Quick Takeaways

  • Henderson John T. is an SEC filer tracked under CIK 0001226488.
  • 120 filings are listed on this profile.
  • Common form coverage includes 4, 144, 4/A and more.

What Changed

  • Latest filing: 4 filed on 15 Apr 2026.
  • Report period: 15 Apr 2026.

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 15 Apr 2026 for CIK 0001226488.

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 Henderson John T..

Latest source-backed update
4 filed 15 Apr 2026
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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 15 Apr 2026.
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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 Henderson John T.

Ownership report updated

Latest ownership report period: 15 Apr 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

15 Apr 2026

Page type

Ownership filings

Latest period

15 Apr 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 15 Apr 2026.

Open ownership filings Browse recent public updates

Filer Overview

Henderson John T. has filed 120 SEC EDGAR filings since 12 Feb 2004. Common forms include 4, 144, 4/A, 3 and more.

Reporting owner transactions Latest 13F filings

Latest Filings

Recent SEC filings for Henderson John T. 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 PRIMARY DOCUMENT 15 Apr 2026 15 Apr 2026 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Jan 2026 15 Jan 2026 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Dec 2025 02 Dec 2025 000-50633
144 Open 144 document View SEC filing for 144 02 Dec 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Oct 2025 15 Oct 2025 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Jul 2025 15 Jul 2025 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 14 May 2025 14 May 2025 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Apr 2025 15 Apr 2025 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Apr 2025 15 Apr 2025 000-50633
144 Open 144 document View SEC filing for 144 15 Apr 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Jan 2025 02 Jan 2025 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 Dec 2024 11 Dec 2024 000-50633
144 Open 144 document View SEC filing for 144 11 Dec 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Oct 2024 01 Oct 2024 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Jul 2024 01 Jul 2024 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 May 2024 15 May 2024 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 25 Apr 2024 25 Apr 2024 000-50633
144 Open 144 document View SEC filing for 144 25 Apr 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 14 Feb 2024 14 Feb 2024 000-50633
144 Open 144 document View SEC filing for 144 14 Feb 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 Jan 2024 12 Jan 2024 000-50633
144 Open 144 document View SEC filing for 144 12 Jan 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Jan 2024 02 Jan 2024 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 Dec 2023 18 Dec 2023 000-50633
144 Open 144 document View SEC filing for 144 18 Dec 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Oct 2023 02 Oct 2023 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Jul 2023 03 Jul 2023 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 18 May 2023 10 May 2023 000-50633
144 Open 144 document View SEC filing for 144 15 May 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 15 May 2023 15 May 2023 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Apr 2023 03 Apr 2023 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Jan 2023 03 Jan 2023 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Oct 2022 03 Oct 2022 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 Sep 2022 12 Sep 2022 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 Jul 2022 01 Jul 2022 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 11 May 2022 10 May 2022 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Apr 2022 01 Apr 2022 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Mar 2022 01 Mar 2022 000-50633
4/A Open 4/A document View SEC filing for 4/A FORM 4/A SUBMISSION 08 Feb 2022 01 Apr 2021 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Jan 2022 03 Jan 2022 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Nov 2021 05 Nov 2021 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Oct 2021 01 Oct 2021 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 08 Jul 2021 01 Jul 2021 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 May 2021 12 May 2021 000-50633
4/A Open 4/A document View SEC filing for 4/A PRIMARY DOCUMENT 08 Apr 2021 19 May 2020 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Apr 2021 01 Apr 2021 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Jan 2021 04 Jan 2021 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 31 Dec 2020 31 Dec 2020 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Oct 2020 05 Oct 2020 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 20 May 2020 19 May 2020 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 14 May 2020 13 May 2020 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 14 Feb 2020 12 Feb 2020 000-50633
4/A Open 4/A document View SEC filing for 4/A PRIMARY DOCUMENT 29 Jan 2020 02 Jan 2020 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Jan 2020 02 Jan 2020 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Jan 2020 19 Nov 2019 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Dec 2019 05 Dec 2019 000-26642
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 20 Nov 2019 15 May 2019 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 07 Nov 2019 07 Nov 2019 000-26642
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 May 2019 15 May 2019 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Jan 2019 02 Jan 2019 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 30 Nov 2018 29 Nov 2018 000-26642
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Jul 2018 11 Jul 2018 000-26642
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 May 2018 16 May 2018 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Jan 2018 02 Jan 2018 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 30 Nov 2017 30 Nov 2017 000-26642
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Sep 2017 01 Sep 2017 000-26642
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 22 May 2017 18 May 2017 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 23 Feb 2017 22 Feb 2017 000-26642
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Jan 2017 03 Jan 2017 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Dec 2016 01 Dec 2016 000-26642
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Sep 2016 09 Sep 2016 000-26642
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 20 May 2016 18 May 2016 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Jan 2016 04 Jan 2016 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 07 Dec 2015 03 Dec 2015 000-26642
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 21 May 2015 20 May 2015 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Jan 2015 02 Jan 2015 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Dec 2014 04 Dec 2014 000-26642
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Jun 2014 05 Jun 2014 000-26642
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 22 May 2014 21 May 2014 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 11 Mar 2014 07 Mar 2014 000-26642
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 07 Mar 2014 05 Mar 2014 000-26642
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Jan 2014 02 Jan 2014 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Dec 2013 05 Dec 2013 000-26642
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 29 May 2013 22 May 2013 000-50633
4 Open 4 document View SEC filing for 4 FORM 4 25 Jan 2013 18 Jan 2013 001-34275
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Jan 2013 02 Jan 2013 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 11 Dec 2012 10 Dec 2012 000-26642
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Dec 2012 05 Dec 2012 000-26642
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 24 May 2012 22 May 2012 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Jan 2012 03 Jan 2012 000-50633
4 Open 4 document View SEC filing for 4 MAIN DOCUMENT DESCRIPTION 12 Dec 2011 08 Dec 2011 001-34275
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Dec 2011 02 Dec 2011 000-26642
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 19 May 2011 18 May 2011 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Jan 2011 03 Jan 2011 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Dec 2010 03 Dec 2010 000-26642
4 Open 4 document View SEC filing for 4 FORM 4 15 Nov 2010 11 Nov 2010 001-34275
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 21 May 2010 20 May 2010 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Jan 2010 04 Jan 2010 000-50633

About this filer

Henderson John T. files with the SEC under CIK 0001226488. 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.