SEC Form 4 reporting owner

Harrington Robert Arthur

Harrington Robert Arthur has filed 6 Form 4 transactions reported between December 1, 2025 and July 15, 2026, as Director of CYTOKINETICS INC.

Name as filed: Harrington Robert Arthur

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$144K
1 lines
Companies
1
with Form 4 filings
Latest transaction
Jul 15, 2026
transaction date

Roles and reported holdings

  • CYTKCYTOKINETICS INC
    Dec 1, 2025 – Jul 15, 2026

    Director

    Held directly18,542 sh as of Dec 1, 2025 · Form 4

    24 months: $144K sold

Transaction history

All 6 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Jul 15, 2026CYTKDirectorGrant or awardCode A · direct151$12K@ $82.62Form 4
May 27, 2026CYTKDirectorGrant or awardCode A · direct4,301—Form 4
May 27, 2026CYTKDirectorGrant or awardCode A · direct2,851—Form 4
Apr 15, 2026CYTKDirectorGrant or awardCode A · direct191$12K@ $65.37Form 4
Jan 15, 2026CYTKDirectorGrant or awardCode A · direct197$12K@ $63.44Form 4
Dec 1, 2025CYTKDirectorOpen-market saleCode S · direct2,150$144K@ $66.80Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.