person · Reporting owner
Harrington Robert Arthur
Disclosed activity across 1 company
Sign in to followReported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| CYTOKINETICS INCCYTK · Entity 3528 | Director | July 15, 2026 | July 16, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
CYTOKINETICS INC
Report date July 15, 2026 · Filed July 16, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 21,932 |
Reported balance
After 2026-07-15 transaction · row 1
1 source rowRow 1 · 2026-07-15 · Grant · Acquired 151 · Balance 21,932 F1: Shares of common stock granted pursuant to the Cytokinetics Equity in lieu of Cash Retainer Program. Shares are fully vested at the time of grant. |
Filing footnotes · ownership attribution and instrument terms
F1: Shares of common stock granted pursuant to the Cytokinetics Equity in lieu of Cash Retainer Program. Shares are fully vested at the time of grant.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| July 15, 2026 Filed Jul 16, 2026 20:29 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantCommon Stock | 151 | $82.62 | $12,475.62 |
DisclosureSEC source: 0001061983-26-000079 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 21,932 F1 · kind: Shares of common stock granted pursuant to the Cytokinetics Equity in lieu of Cash Retainer Program. Shares are fully vested at the time of grant. Read SEC document |
| May 27, 2026 Filed May 27, 2026 23:13 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantNon-Qualified Stock Option (Right to Buy) · Derivative | 4,301 | $0.00 Strike: $77.15 | $0.00 |
DisclosureSEC source: 0001061983-26-000060 · form4.xml · derivative · entry 2 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 4,301 Underlying: Common Stock · 4,301 shares Expires 2036-05-26 Read SEC document |
| May 27, 2026 Filed May 27, 2026 23:13 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantCommon Stock | 2,851 | $0.00 | $0.00 |
DisclosureSEC source: 0001061983-26-000060 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 21,781 Read SEC document |
| April 15, 2026 Filed Apr 15, 2026 22:33 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantCommon Stock | 191 | $65.37 | $12,485.67 |
DisclosureSEC source: 0001061983-26-000038 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 18,930 F1 · kind: Shares of common stock granted pursuant to Director Equity in Lieu of Cash Retainer Program. Shares are fully vested. Read SEC document |
| January 15, 2026 Filed Jan 16, 2026 21:15 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantCommon Stock | 197 | $63.44 | $12,497.68 |
DisclosureSEC source: 0001061983-26-000004 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 18,739 F1 · kind: Fully vested shares of common stock received in lieu of cash retainer pursuant to Equity in Lieu of Cash Retainer Option available to members of our Board of Directors. Read SEC document |
| December 01, 2025 Filed Dec 2, 2025 14:13 UTC | CYTOKINETICS INC CYTK · Entity 3528 | SaleCommon Stock | 2,150 | $66.80 | $143,620.00 |
DisclosureSEC source: 0001061983-25-000039 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 18,542 Read SEC document |
| October 15, 2025 Filed Oct 16, 2025 20:37 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantCommon Stock | 199 | $62.80 | $12,497.20 |
DisclosureSEC source: 0001061983-25-000013 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 20,692 F1 · kind: Director equity in lieu of cash retainer program. Read SEC document |
| September 02, 2025 Filed Sep 2, 2025 20:34 UTC | CYTOKINETICS INC CYTK · Entity 3528 | SaleCommon Stock | 2,150 | $48.67 | $104,640.50 |
DisclosureSEC source: 0001127602-25-021071 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 20,493 Read SEC document |
| July 15, 2025 Filed Jul 16, 2025 21:41 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantCommon Stock | 328 | $38.01 | $12,467.28 |
DisclosureSEC source: 0001127602-25-019287 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 22,643 F1 · kind: Director equity in lieu of cash retainer program. Read SEC document |
| May 14, 2025 Filed May 19, 2025 20:12 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantNon-Qualified Stock Option (Right to Buy) · Derivative | 10,880 | $0.00 Strike: $30.00 | $0.00 |
DisclosureSEC source: 0001127602-25-014892 · form4.xml · derivative · entry 2 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 10,880 Underlying: Common Stock · 10,880 shares Expires 2035-05-13 F2 · kind: Comprised of stock options that will vest monthly in equal installments over a period commencing on the grant date and ending on the earlier to occur of (x) the one-year anniversary of the date of the grant and (y) the date of the issuer's annual meeting of stockholders for the calendar year immediately subsequent to the grant date, subject to the director's continuous service as a member of the issuer's Board of Directors. Read SEC document |
| May 14, 2025 Filed May 19, 2025 20:12 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantCommon Stock | 7,333 | $0.00 | $0.00 |
DisclosureSEC source: 0001127602-25-014892 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 22,315 F1 · kind: Comprised of restricted stock units ("RSUs") that will vest in one installment on the earlier to occur of (x) the one-year anniversary of the grant date and (y) the date of the issuer's annual meeting of stockholders for the calendar year immediately subsequent to the grant date, subject to the director's continuous service as a member of the issuer's Board of Directors. RSUs convert to shares of common stock on a 1:1 basis upon vesting. Read SEC document |
| April 15, 2025 Filed Apr 16, 2025 20:06 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantCommon Stock | 324 | $38.56 | $12,493.44 |
DisclosureSEC source: 0001127602-25-012115 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 14,982 F1 · kind: Shares acquired pursuant to Director Stock in lieu of Cash Retainer Plan. Read SEC document |
| April 03, 2025 Filed Apr 4, 2025 20:10 UTC | CYTOKINETICS INC CYTK · Entity 3528 | SaleCommon Stock | 450 | $39.43 | $17,743.50 |
DisclosureSEC source: 0001127602-25-011689 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 14,658 Read SEC document |
| March 04, 2025 Filed Mar 4, 2025 21:24 UTC | CYTOKINETICS INC CYTK · Entity 3528 | SaleCommon Stock | 900 | $42.50 | $38,250.00 |
DisclosureSEC source: 0001127602-25-007902 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 15,108 Read SEC document |
| January 02, 2025 Filed Jan 6, 2025 21:25 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantCommon Stock | 255 | $48.93 | $12,477.15 |
DisclosureSEC source: 0001127602-25-000768 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 16,008 F1 · kind: Director Stock in Lieu of Cash Retainer Program Read SEC document |
| October 01, 2024 Filed Oct 3, 2024 21:28 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantCommon Stock | 237 | $52.60 | $12,466.20 |
DisclosureSEC source: 0001127602-24-025197 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 15,753 F1 · kind: Stock award in lieu of cash retainer payment. Read SEC document |
| July 05, 2024 Filed Jul 8, 2024 21:06 UTC | CYTOKINETICS INC CYTK · Entity 3528 | SaleCommon Stock | 253 | $54.61 | $13,816.33 |
DisclosureSEC source: 0001127602-24-020198 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 15,516 Read SEC document |
| July 01, 2024 Filed Jul 4, 2024 00:00 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantCommon Stock | 228 | $0.00 | $0.00 |
DisclosureSEC source: 0001127602-24-020145 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 15,769 F1 · kind: Stock award in lieu of cash retainer payment. Read SEC document |
| June 03, 2024 Filed Jun 5, 2024 21:23 UTC | CYTOKINETICS INC CYTK · Entity 3528 | SaleCommon Stock | 1,580 | $48.64 | $76,851.20 |
DisclosureSEC source: 0001127602-24-017963 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 15,541 Read SEC document |
| May 15, 2024 Filed May 16, 2024 22:05 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantNon-Qualified Stock Option (Right to Buy) · Derivative | 3,636 | $0.00 Strike: $60.50 | $0.00 |
DisclosureSEC source: 0001127602-24-015723 · form4.xml · derivative · entry 2 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 3,636 Underlying: Common Stock · 3,636 shares Expires 2034-05-15 Read SEC document |
| May 15, 2024 Filed May 16, 2024 22:05 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantCommon Stock | 5,600 | $0.00 | $0.00 |
DisclosureSEC source: 0001127602-24-015723 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 17,121 Read SEC document |
| January 02, 2024 Filed Jan 3, 2024 21:20 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantCommon Stock | 148 | $84.12 | $12,449.76 |
DisclosureSEC source: 0001127602-24-000423 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 11,521 F1 · kind: Shares issued at Reporting Person's election pursuant to Issuer's stock in lieu of cash for all or part of director's annual base retainer program. Shares are fully vested from the moment of grant. Shares are issued at per share price of $84.12, representing the closing stock price of the Issuer's common stock on January 2, 2024. Read SEC document |
| October 02, 2023 Filed Oct 3, 2023 20:21 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantCommon Stock | 448 | $27.88 | $12,490.24 |
DisclosureSEC source: 0001127602-23-025197 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 11,373 F1 · kind: Shares issued at Reporting Person's election pursuant to Issuer's stock in lieu of cash for all or part of director's annual base retainer program. Shares are fully vested from the moment of grant. Shares are issued at per share price of $27.88, representing the closing stock price of the Issuer's common stock on October 2, 2023. Read SEC document |
| July 03, 2023 Filed Jul 5, 2023 20:19 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantCommon Stock | 374 | $33.36 | $12,476.64 |
DisclosureSEC source: 0001127602-23-020043 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 10,925 F1 · kind: Shares issued at Reporting Person's election pursuant to Issuer's stock in lieu of cash for all or part of director's annual base retainer program. Shares are fully vested from the moment of grant. Shares are issued at per share price of $33.36, representing the closing stock price of the Issuer's common stock on July 3, 2023. Read SEC document |
| May 10, 2023 Filed May 18, 2023 20:43 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantNon-Qualified Stock Option (Right to Buy) · Derivative | 10,000 | $0.00 Strike: $37.89 | $0.00 |
DisclosureSEC source: 0001127602-23-016164 · form4.xml · derivative · entry 2 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 10,000 Underlying: Common Stock · 10,000 shares Expires 2033-05-10 F2 · kind: Options shall vest and become exercisable in 12 equal monthly installments, the first such installment vesting on 06/10/2023 and the last such installment vesting on 05/10/2024. Read SEC document |
| May 10, 2023 Filed May 18, 2023 20:43 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantCommon Stock | 5,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001127602-23-016164 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 10,551 F1 · kind: Comprised of restricted stock units that will vest in full and in one installment on 05/10/2024. Read SEC document |
| April 03, 2023 Filed Apr 5, 2023 20:13 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantCommon Stock | 298 | $37.71 | $11,237.58 |
DisclosureSEC source: 0001127602-23-012559 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 5,551 F1 · kind: Shares issued at Reporting Person's election pursuant to Issuer's stock in lieu of cash for all or part of director's annual base retainer program. Shares are fully vested from the moment of grant. Shares are issued at per share price of $37.71, representing the closing stock price of the Issuer's common stock on April 3, 2023. Read SEC document |
| January 03, 2023 Filed Jan 4, 2023 23:46 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantCommon Stock | 253 | $44.35 | $11,220.55 |
DisclosureSEC source: 0001127602-23-000722 · form4.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 5,253 F1 · kind: Shares issued at Reporting Person's election pursuant to Issuer's stock in lieu of cash for all or part of director's annual base retainer program. Shares are fully vested from the moment of grant. Shares are issued at per share price of $44.35, representing the closing stock price of the Issuer's common stock on January 3, 2023. Read SEC document |
| May 10, 2022 Filed May 11, 2022 22:05 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantNon-Qualified Stock Option (right to buy) · Derivative | 10,000 | $0.00 Strike: $37.89 | $0.00 |
DisclosureSEC source: 0001061983-22-000117 · edgardoc.xml · derivative · entry 2 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 10,000 Underlying: Common Stock · 10,000 shares Expires 2032-05-10 F2 · derivative.exercise_date: Options shall vest and become exercisable in 12 equal monthly installments, the first such installment vesting on 06/10/2022 and the last such installment vesting on 05/10/2023. Read SEC document |
| May 10, 2022 Filed May 11, 2022 22:05 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantCommon Stock | 5,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001061983-22-000117 · edgardoc.xml · nonDerivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 5,000 F1 · kind: Comprised of restricted stock units that will vest in full and in one installment on 05/10/2023. Read SEC document |
| April 08, 2022 Filed Apr 19, 2022 01:22 UTC | CYTOKINETICS INC CYTK · Entity 3528 | GrantNon-Qualified Stock Option (right to buy) · Derivative | 35,000 | $41.69 Strike: $41.69 | $1,459,150.00 |
DisclosureSEC source: 0001061983-22-000101 · edgardoc.xml · derivative · entry 1 Harrington Robert Arthur · CIK 0001923988 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 35,000 Underlying: Common Stock · 35,000 shares Expires 2032-04-08 F1 · derivative.exercise_date: Options shall vest and become exercisable in 36 equal monthly installments as from the date of the grant. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.