Filer Snapshot

Robert Arthur Harrington SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001923988.

Entity Type

Individual

Total Filings

29

Latest Filing

15 Apr 2026

Industry

n/a

Save this filer page for the next filing cycle

Keep this page in your research queue, then return to compare new filings with prior context.

Save and revisit

Save this filer page

Create a free account to keep this page in your watchlists. After verification, we will save it automatically and open your saved research list.

Create free account and save this filer Already have an account? Sign in and save it

Best next steps

Start with the latest filings table, then open the strongest context page for this filer.

  • Use the filings table to verify the newest submission, form type, and report period.
  • Open the deeper context page only when this filer actually has insider or ownership signal.
Go to latest filings table Open reporting owner context
Source: SEC Forms 3/4/5

4 filed on 15 Apr 2026 for CIK 0001923988.

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

Quick Takeaways

  • Robert Arthur Harrington is an SEC filer tracked under CIK 0001923988.
  • 29 filings are listed on this profile.
  • Common form coverage includes 4, 144, 3.

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 0001923988.

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 Robert Arthur Harrington.

Latest source-backed update
4 filed 15 Apr 2026
Why come back
Revisit after a new SEC filing appears to compare the updated record with prior filings.
  • Latest filing on record: 4 filed 15 Apr 2026.
  • Save this filer if you want a stable place to return after the next filing cycle.
  • Open the latest filing table or ownership context to verify what changed.

Filer freshness comes from SEC EDGAR submission history and related source-backed ownership or portfolio filings when available.

Jump to save and follow actions Open latest filings table

Latest update

What changed recently for Robert Arthur Harrington

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

Robert Arthur Harrington has filed 29 SEC EDGAR filings since 18 Apr 2022. Common forms include 4, 144, 3.

Reporting owner transactions Latest 13F filings

Latest Filings

Recent SEC filings for Robert Arthur Harrington 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 01 Dec 2025 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Oct 2025 15 Oct 2025 000-50633
144 Open 144 document View SEC filing for 144 02 Sep 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Sep 2025 02 Sep 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 19 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 04 Apr 2025 03 Apr 2025 000-50633
144 Open 144 document View SEC filing for 144 04 Mar 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Mar 2025 04 Mar 2025 000-50633
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 03 Oct 2024 01 Oct 2024 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 08 Jul 2024 05 Jul 2024 000-50633
144 Open 144 document View SEC filing for 144 05 Jul 2024
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 05 Jun 2024 03 Jun 2024 000-50633
144 Open 144 document View SEC filing for 144 03 Jun 2024
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 03 Jan 2024 02 Jan 2024 000-50633
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
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 11 May 2022 10 May 2022 000-50633
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 18 Apr 2022 08 Apr 2022 000-50633
3 Open 3 document View SEC filing for 3 PRIMARY DOCUMENT 18 Apr 2022 08 Apr 2022 000-50633

About this filer

Robert Arthur Harrington files with the SEC under CIK 0001923988. 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.
We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. Here you can make detailed settings or revoke your consent (in part if necessary) with effect for the future. For further information, please refer to our Privacy Policy .