As of November 6, 2026, Cytokinetics, Incorporated is a publicly traded company (Nasdaq: CYTK); its largest reported holder is T. Rowe Price, with 14.5% on Schedule 13G/A of February 17, 2026, then Vanguard (5.21%). The largest insider holding is Robert I. Blum, the chief executive and president, with 282,710 shares (0.20% of shares outstanding), per Form 4 of November 2, 2026 (Schedule 13G/A, February 17, 2026).
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Is Cytokinetics, Incorporated a real, registered company?
- Cytokinetics, Incorporated files with the SEC under CIK 1061983 (its SEC filings).
- Its shares are listed under the ticker CYTK on Nasdaq (SEC company record).
- business address in South San Francisco, California, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under Cytokinetics, Incorporated in our court records and SEC 8-K records (as of 2026-11-06).
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Wellington Management (filed 2026-08-13).
Who are Cytokinetics, Incorporated's owners and officers?
Cytokinetics, Incorporated: business address in South San Francisco, California; industry Pharmaceutical Preparations (Schedule 13G/A, 2026-08-13).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G/A, 2026-08-13 | Wellington Management Group LLP | 5.1% |
| Schedule 13G/A, 2026-07-08 | Fmr LLC | 3.9% |
| Schedule 13G/A, 2026-05-06 | Fmr LLC | 9% |
| Schedule 13G, 2026-04-29 | Vanguard Capital Management | 5.21% |
| Schedule 13G/A, 2026-03-26 | The Vanguard Group | 0% |
| Schedule 13G/A, 2026-02-17 | T. Rowe Price Investment Management, Inc. | 14.5% |
| Schedule 13G/A, 2025-11-14 | T. Rowe Price Investment Management, Inc. | 16% |
| Schedule 13G, 2025-11-10 | State Street Corporation | 4.7% |
| Schedule 13G/A, 2025-08-14 | T. Rowe Price Investment Management, Inc. | 14.7% |
| Schedule 13G/A, 2025-08-07 | Fmr LLC | 10.9% |
Questions about who owns Cytokinetics, Incorporated
Who owns Cytokinetics, Incorporated?
On this page, 3 holders' latest ownership filings report 5% or more of Cytokinetics, Incorporated: T. Rowe Price Investment Management, Inc. (14.5%, Schedule 13G/A, filed 2026-02-17), Vanguard Capital Management (5.21%, Schedule 13G, filed 2026-04-29) and Wellington Management Group LLP (5.1%, Schedule 13G/A, filed 2026-08-13).
Who are the largest shareholders of Cytokinetics, Incorporated?
By the share each holder's latest filing reports, the largest holders of Cytokinetics, Incorporated on this page are T. Rowe Price Investment Management, Inc. (14.5%), Vanguard Capital Management (5.21%) and Wellington Management Group LLP (5.1%).
When did T. Rowe Price Investment Management, Inc. buy into Cytokinetics, Incorporated?
The filings give report dates, not purchase dates. The earliest filing from T. Rowe Price Investment Management, Inc. on this page is the Schedule 13G/A, filed 2025-08-14, reporting 14.7%; its latest, Schedule 13G/A filed 2026-02-17, reports 14.5%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 10 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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What They Do, And How The Money Works
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The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
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Which insiders own Cytokinetics, Incorporated shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , the chief executive and president: 282,710 shares (0.20% of shares outstanding), 278,544 held directly and 4,166 indirectly (Form 4, 2026-11-02).
- , the executive vice president research and amp: 153,902 shares (0.11% of shares outstanding) (Form 4, 2026-11-03).
- , the chief legal and admin officer: 107,943 shares (0.08% of shares outstanding) (Form 4, 2026-03-17).
- , a director: 78,795 shares (0.06% of shares outstanding), 78,712 held directly and 83 indirectly (Form 4, 2026-10-20).
- , the chief financial officer and executive vice president: 63,221 shares (0.05% of shares outstanding) (Form 4, 2026-07-02).
Shares outstanding: 139,303,351 as of 2026-11-02, from the company's latest SEC cover page.
How much has Cytokinetics, Incorporated raised?
No fundraising or offering filing from Cytokinetics, Incorporated is on file with us.
Keep reading
More on Cytokinetics, Incorporated and the records around it.
Cytokinetics, Incorporated elsewhere on the record
- 5%+ stake filings Aug 2026
Companies that share a holder
- T. Rowe Price Investment Management, Inc. also filed stake reports on 167 other companies: CABALETTA BIO INC (Nov 2026), MADISON SQUARE GARDEN SPORTS CORP (Nov 2026), MSG RANGERS CORP (Nov 2026)
- Wellington Management Group LLP also filed stake reports on 240 other companies: Hub Group, Inc. (Oct 2026), Latham Group, Inc. (Oct 2026), Redwood Trust, Inc. (Oct 2026)
- STATE STREET CORPORATION also filed stake reports on 343 other companies: TRADE DESK INC/THE (Oct 2026), CENTRUS ENERGY CORP (Sep 2026), ACADIA PHARMACEUTICALS INC (Aug 2026)
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