13F Pro

SEC Form 4 reporting owner

Blum Robert I

Blum Robert I has filed 28 Form 4 transactions reported between December 3, 2025 and September 15, 2026, as President & CEO of CYTOKINETICS INC.

Name as filed: Blum Robert I

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$13.3M
12 lines
Companies
1
with Form 4 filings
Latest transaction
Sep 15, 2026
transaction date

Roles and reported holdings

  • CYTKCYTOKINETICS INC
    Dec 3, 2025 – Sep 15, 2026

    President & CEO

    Held directly278,544 sh as of Sep 14, 2026 · Form 4
    Held indirectly (latest line)0 sh as of Sep 15, 2026 · Form 4

    24 months: $13.3M sold

Transaction history

All 28 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Sep 15, 2026CYTKPresident & CEOOpen-market saleCode S · indirect97,926$6.8M@ $69.33Form 4
Sep 14, 2026CYTKPresident & CEOGiftCode G · direct97,926—Form 4
Sep 14, 2026CYTKPresident & CEOGiftCode G · direct1,350—Form 4
Sep 14, 2026CYTKPresident & CEOOption exerciseCode M · direct7,500$80K@ $10.60Form 4
Aug 31, 2026CYTKPresident & CEOOption exerciseCode M · direct7,500$80K@ $10.60Form 4
Aug 10, 2026CYTKPresident & CEOOption exerciseCode M · direct7,500$80K@ $10.60Form 4
Jul 27, 2026CYTKPresident & CEOOption exerciseCode M · direct7,500$80K@ $10.60Form 4
Jul 13, 2026CYTKPresident & CEOOption exerciseCode M · direct7,490$79K@ $10.60Form 4
Jul 13, 2026CYTKPresident & CEOOpen-market saleCode S · direct10$820@ $82.02Form 4
Jul 1, 2026CYTKPresident & CEOOpen-market saleCode S · direct7,500$637K@ $84.92Form 4
Jun 15, 2026CYTKPresident & CEOOpen-market saleCode S · direct7,500$528K@ $70.46Form 4
May 27, 2026CYTKPresident & CEOOpen-market saleCode S · direct7,500$579K@ $77.21Form 4
May 14, 2026CYTKPresident & CEOOpen-market saleCode S · direct7,500$584K@ $77.92Form 4
Apr 29, 2026CYTKPresident & CEOOpen-market saleCode S · direct7,500$447K@ $59.62Form 4
Apr 15, 2026CYTKPresident & CEOOpen-market saleCode S · direct7,500$490K@ $65.38Form 4
Apr 1, 2026CYTKPresident & CEOOpen-market saleCode S · direct7,500$500K@ $66.63Form 4
Mar 17, 2026CYTKPresident & CEOOpen-market saleCode S · direct23,928$1.5M@ $62.15Form 4
Mar 17, 2026CYTKPresident & CEOOpen-market saleCode S · direct12,673$788K@ $62.15Form 4
Mar 15, 2026CYTKPresident & CEOGrant or awardCode A · direct111,864—Form 4
Mar 15, 2026CYTKPresident & CEOGrant or awardCode A · direct1,665—Form 4
Mar 15, 2026CYTKPresident & CEOGrant or awardCode A · direct75,258—Form 4
Mar 9, 2026CYTKPresident & CEOOpen-market saleCode S · direct7,931$482K@ $60.72Form 4
Dec 22, 2025CYTKPresident & CEOOption exerciseCode M · direct16,506$110K@ $6.67Form 4
Dec 22, 2025CYTKPresident & CEOShares withheld for tax or exercise priceCode F · direct30,426$2.1M@ $68.18Form 4
Dec 22, 2025CYTKPresident & CEOOption exerciseCode M · direct54,727$365K@ $6.67Form 4
Dec 22, 2025CYTKPresident & CEOShares withheld for tax or exercise priceCode F · direct2,935$184K@ $62.72Form 4
Dec 22, 2025CYTKPresident & CEOGrant or awardCode A · direct5,765—Form 4
Dec 3, 2025CYTKPresident & CEOShares withheld for tax or exercise priceCode F · direct5,930$386K@ $65.02Form 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.