Follow the people · Insider
Sung Lee
Sung Lee files insider transactions with the SEC as an evp, chief financial officer of Cytokinetics (CYTK). We hold 5 disclosed purchases and sales filed since 26 November 2019, 3 of them in the last 90 days.
- Files forCYTK
- Disclosed buys and sells5 in all, 3 in the last 90 days
- Last disclosure2 July 2026
Positions held
4 posts we hold — a term names its own dates; a run of filings only says when they filed- Filed 31 May 2024 — 1 July 2026EVP, Chief Financial Officer · Cytokinetics (CYTK)51 Form 4 lines · source: SEC Form 4
- Filed 2 January 2026 — 5 June 2026Director · Tango Therapeutics (TNGX)8 Form 4 lines · source: SEC Form 4
- Filed 27 March 2023 — 27 March 2024EVP & Chief Financial Officer · Vir Biotechnology (VIR)5 Form 4 lines · source: SEC Form 4
- Filed 25 November 2019 — 25 November 2020EVP, Chief Financial Officer · Sangamo Therapeutics (SGMO)5 Form 4 lines · source: SEC Form 4
Everything they disclosed
69 entries, newest first — one per disclosure report, one per Form 4 line- exercised options over 1,112 shares of CytokineticsSEC Form 42 July 2026Common Stock · traded 1 July 2026 · filed 2 July 2026
- ▼ sold on the open market 1,112 shares of CytokineticsSEC Form 42 July 2026Common Stock · traded 1 July 2026 · filed 2 July 2026
- exercised options over 1,112 shares of Cytokinetics (a derivative holding)SEC Form 42 July 2026Non-Qualified Stock Option (Right to Buy) · traded 1 July 2026 · filed 2 July 2026
- exercised options over 188 shares of CytokineticsSEC Form 429 June 2026Common Stock · traded 29 June 2026 · filed 29 June 2026
- exercised options over 188 shares of Cytokinetics (a derivative holding)SEC Form 429 June 2026Incentive Stock Option (Right to Buy) · traded 29 June 2026 · filed 29 June 2026
- exercised options over 823 shares of Cytokinetics (a derivative holding)SEC Form 429 June 2026Non-Qualified Stock Option (Right to Buy) · traded 29 June 2026 · filed 29 June 2026
- exercised options over 822 shares of CytokineticsSEC Form 429 June 2026Common Stock · traded 29 June 2026 · filed 29 June 2026
- exercised options over 1,113 shares of CytokineticsSEC Form 429 June 2026Common Stock · traded 29 June 2026 · filed 29 June 2026
- exercised options over 188 shares of CytokineticsSEC Form 429 June 2026Common Stock · traded 29 June 2026 · filed 29 June 2026
- exercised options over 823 shares of CytokineticsSEC Form 429 June 2026Common Stock · traded 29 June 2026 · filed 29 June 2026
- ▼ sold on the open market 3,134 shares of CytokineticsSEC Form 429 June 2026Common Stock · traded 29 June 2026 · filed 29 June 2026
- exercised options over 188 shares of Cytokinetics (a derivative holding)SEC Form 429 June 2026Incentive Stock Option (Right to Buy) · traded 29 June 2026 · filed 29 June 2026
- exercised options over 822 shares of Cytokinetics (a derivative holding)SEC Form 429 June 2026Non-Qualified Stock Option (Right to Buy) · traded 29 June 2026 · filed 29 June 2026
- exercised options over 1,113 shares of Cytokinetics (a derivative holding)SEC Form 429 June 2026Non-Qualified Stock Option (Right to Buy) · traded 29 June 2026 · filed 29 June 2026
- exercised options over 23,370 shares of CytokineticsSEC Form 429 June 2026Common Stock · traded 24 June 2026 · filed 29 June 2026
- exercised options over 9,307 shares of Cytokinetics (a derivative holding)SEC Form 429 June 2026Non-Qualified Stock Option (Right to Buy) · traded 24 June 2026 · filed 29 June 2026
- exercised options over 2,817 shares of Cytokinetics (a derivative holding)SEC Form 429 June 2026Incentive Stock Option (Right to Buy) · traded 24 June 2026 · filed 29 June 2026
- exercised options over 1,113 shares of Cytokinetics (a derivative holding)SEC Form 429 June 2026Non-Qualified Stock Option (Right to Buy) · traded 24 June 2026 · filed 29 June 2026
- exercised options over 188 shares of Cytokinetics (a derivative holding)SEC Form 429 June 2026Incentive Stock Option (Right to Buy) · traded 24 June 2026 · filed 29 June 2026
- exercised options over 822 shares of Cytokinetics (a derivative holding)SEC Form 429 June 2026Non-Qualified Stock Option (Right to Buy) · traded 24 June 2026 · filed 29 June 2026
- exercised options over 1,113 shares of Cytokinetics (a derivative holding)SEC Form 429 June 2026Non-Qualified Stock Option (Right to Buy) · traded 24 June 2026 · filed 29 June 2026
- exercised options over 9,307 shares of CytokineticsSEC Form 429 June 2026Common Stock · traded 24 June 2026 · filed 29 June 2026
- exercised options over 2,817 shares of CytokineticsSEC Form 429 June 2026Common Stock · traded 24 June 2026 · filed 29 June 2026
- exercised options over 1,113 shares of CytokineticsSEC Form 429 June 2026Common Stock · traded 24 June 2026 · filed 29 June 2026
- exercised options over 188 shares of CytokineticsSEC Form 429 June 2026Common Stock · traded 24 June 2026 · filed 29 June 2026
- exercised options over 822 shares of CytokineticsSEC Form 429 June 2026Common Stock · traded 24 June 2026 · filed 29 June 2026
- exercised options over 1,113 shares of CytokineticsSEC Form 429 June 2026Common Stock · traded 24 June 2026 · filed 29 June 2026
- ▼ sold on the open market 38,730 shares of CytokineticsSEC Form 429 June 2026Common Stock · traded 24 June 2026 · filed 29 June 2026
- exercised options over 23,370 shares of Cytokinetics (a derivative holding)SEC Form 429 June 2026Non-Qualified Stock Option (Right to Buy) · traded 24 June 2026 · filed 29 June 2026
- was granted 570 shares of Tango TherapeuticsSEC Form 48 June 2026Common Stock · traded 5 June 2026 · filed 8 June 2026
- was granted 3,570 shares of Tango Therapeutics (a derivative holding)SEC Form 48 June 2026Stock Option (Right to Buy) · traded 5 June 2026 · filed 8 June 2026
- ▼ sold on the open market 23,906 shares of CytokineticsSEC Form 45 May 2026Common Stock · traded 5 May 2026 · filed 5 May 2026
- was granted 12,300 shares of Tango TherapeuticsSEC Form 41 May 2026Common Stock · traded 29 April 2026 · filed 1 May 2026
- was granted 5,200 shares of Tango Therapeutics (a derivative holding)SEC Form 41 May 2026Stock Option (Right to Buy) · traded 29 April 2026 · filed 1 May 2026
- ▼ sold on the open market 4,935 shares of CytokineticsSEC Form 418 March 2026Common Stock · traded 17 March 2026 · filed 18 March 2026
- ▼ sold on the open market 4,935 shares of CytokineticsSEC Form 418 March 2026Common Stock · traded 17 March 2026 · filed 18 March 2026
- was granted 20,646 shares of CytokineticsSEC Form 417 March 2026Common Stock · traded 15 March 2026 · filed 17 March 2026
- was granted 1,665 shares of Cytokinetics (a derivative holding)SEC Form 417 March 2026Incentive Stock Option (Right to Buy) · traded 15 March 2026 · filed 17 March 2026
- was granted 29,480 shares of Cytokinetics (a derivative holding)SEC Form 417 March 2026Non-Qualified Stock Option (Right to Buy) · traded 15 March 2026 · filed 17 March 2026
- was granted 1,665 shares of Cytokinetics (a derivative holding)SEC Form 417 March 2026Incentive Stock Option (Right to Buy) · traded 15 March 2026 · filed 17 March 2026
- was granted 29,480 shares of Cytokinetics (a derivative holding)SEC Form 417 March 2026Non-Qualified Stock Option (Right to Buy) · traded 15 March 2026 · filed 17 March 2026
- was granted 20,646 shares of CytokineticsSEC Form 417 March 2026Common Stock · traded 15 March 2026 · filed 17 March 2026
- was granted 10,000 shares of Tango TherapeuticsSEC Form 46 January 2026Common Stock · traded 2 January 2026 · filed 6 January 2026
- was granted 60,000 shares of Tango Therapeutics (a derivative holding)SEC Form 46 January 2026Stock Option (Right to Buy) · traded 2 January 2026 · filed 6 January 2026
- was granted 60,000 shares of Tango Therapeutics (a derivative holding)SEC Form 46 January 2026Stock Option (Right to Buy) · traded 2 January 2026 · filed 6 January 2026
- was granted 10,000 shares of Tango TherapeuticsSEC Form 46 January 2026Common Stock · traded 2 January 2026 · filed 6 January 2026
- was granted 2,152 shares of CytokineticsSEC Form 429 December 2025Common Stock · traded 22 December 2025 · filed 29 December 2025
- was granted 2,152 shares of CytokineticsSEC Form 429 December 2025Common Stock · traded 22 December 2025 · filed 29 December 2025
- had shares withheld for tax on 805 shares of CytokineticsSEC Form 429 December 2025Common Stock · traded 22 December 2025 · filed 29 December 2025
- had shares withheld for tax on 1,560 shares of CytokineticsSEC Form 45 December 2025Common Stock · traded 3 December 2025 · filed 5 December 2025
- had shares withheld for tax on 4,965 shares of CytokineticsSEC Form 43 June 2025Common Stock · traded 2 June 2025 · filed 3 June 2025
- was granted 9,016 shares of Cytokinetics (a derivative holding)SEC Form 418 March 2025Incentive Stock Option (Right to Buy) · traded 14 March 2025 · filed 18 March 2025
- was granted 41,326 shares of Cytokinetics (a derivative holding)SEC Form 418 March 2025Non-Qualified Stock Option (Right to Buy) · traded 14 March 2025 · filed 18 March 2025
- was granted 32,687 shares of CytokineticsSEC Form 418 March 2025Common Stock · traded 14 March 2025 · filed 18 March 2025
- was granted 4,303 shares of CytokineticsSEC Form 45 December 2024Common Stock · traded 3 December 2024 · filed 5 December 2024
- had shares withheld for tax on 1,536 shares of CytokineticsSEC Form 45 December 2024Common Stock · traded 3 December 2024 · filed 5 December 2024
- was granted 4,304 shares of CytokineticsSEC Form 45 December 2024Common Stock · traded 3 December 2024 · filed 5 December 2024
- was granted 53,417 shares of Cytokinetics (a derivative holding)SEC Form 43 June 2024Non-Qualified Stock Option (Right to Buy) · traded 31 May 2024 · filed 3 June 2024
- was granted 34,684 shares of CytokineticsSEC Form 43 June 2024Common Stock · traded 31 May 2024 · filed 3 June 2024
- ▼ sold on the open market 6,008 shares of Vir BiotechnologySEC Form 428 March 2024Common Stock · traded 27 March 2024 · filed 28 March 2024
- was granted 80,000 shares of Vir Biotechnology (a derivative holding)SEC Form 426 February 2024Stock Option (Right to Buy) · traded 22 February 2024 · filed 26 February 2024
- was granted 40,000 shares of Vir BiotechnologySEC Form 426 February 2024Common Stock · traded 22 February 2024 · filed 26 February 2024
- was granted 133,000 shares of Vir Biotechnology (a derivative holding)SEC Form 429 March 2023Stock Option (Right to Buy) · traded 27 March 2023 · filed 29 March 2023
- was granted 66,500 shares of Vir BiotechnologySEC Form 429 March 2023Common Stock · traded 27 March 2023 · filed 29 March 2023
- had shares withheld for tax on 5,042 shares of Sangamo TherapeuticsSEC Form 430 November 2020Common Stock · traded 25 November 2020 · filed 30 November 2020
- was granted 100,500 shares of Sangamo Therapeutics (a derivative holding)SEC Form 426 February 2020Stock Option (Right-to-Buy) · traded 25 February 2020 · filed 26 February 2020
- was granted 50,000 shares of Sangamo TherapeuticsSEC Form 426 February 2020Common Stock · traded 25 February 2020 · filed 26 February 2020
- was granted 262,000 shares of Sangamo Therapeutics (a derivative holding)SEC Form 426 November 2019Stock Option (Right to Buy) · traded 25 November 2019 · filed 26 November 2019
- was granted 43,750 shares of Sangamo TherapeuticsSEC Form 426 November 2019Common Stock · traded 25 November 2019 · filed 26 November 2019
Positions come from the unitedstates/congress-legislators roster, the Office of Government Ethics and the SEC’s Form 4 index. Every disclosed line names its own source and links the document the government published; we print what the filing says and never a price we did not read from it. Headlines and links come from the GDELT Global Knowledge Graph — the story stays with the publisher. The portrait, where we have one, is the public-domain Congressional Bioguide photograph.