Follow the people · Insider
AmirAli Talasaz
AmirAli Talasaz files insider transactions with the SEC as a co-chief executive officer of Guardant Health (GH). We hold 5 disclosed purchases and sales filed since 11 October 2018, 3 of them in the last 90 days.
- Files forGH
- Disclosed buys and sells5 in all, 3 in the last 90 days
- Last disclosure24 August 2026
Positions held
1 post we hold — a term names its own dates; a run of filings only says when they filed- Filed 9 October 2018 — 21 August 2026Co-Chief Executive Officer · Guardant Health (GH)612 Form 4 lines · source: SEC Form 4
Everything they disclosed
120 entries, newest first — one per disclosure report, one per Form 4 line- exercised options over 4,815 shares of Guardant Health (a derivative holding)SEC Form 42 July 2025Restricted Stock Units · traded 30 June 2025 · filed 2 July 2025
- exercised options over 23,997 shares of Guardant Health (a derivative holding)SEC Form 42 July 2025Restricted Stock Units · traded 1 July 2025 · filed 2 July 2025
- exercised options over 4,815 shares of Guardant HealthSEC Form 42 July 2025Common Stock · traded 30 June 2025 · filed 2 July 2025
- had shares withheld for tax on 2,441 shares of Guardant HealthSEC Form 42 July 2025Common Stock · traded 30 June 2025 · filed 2 July 2025
- ▼ sold on the open market 72,068 shares of Guardant HealthSEC Form 42 July 2025Common Stock · traded 1 July 2025 · filed 2 July 2025
- ▼ sold on the open market 27,932 shares of Guardant HealthSEC Form 42 July 2025Common Stock · traded 1 July 2025 · filed 2 July 2025
- exercised options over 23,997 shares of Guardant HealthSEC Form 42 July 2025Common Stock · traded 1 July 2025 · filed 2 July 2025
- had shares withheld for tax on 12,162 shares of Guardant HealthSEC Form 42 July 2025Common Stock · traded 1 July 2025 · filed 2 July 2025
- ▼ sold on the open market 1,680 shares of Guardant HealthSEC Form 49 June 2025Common Stock · traded 5 June 2025 · filed 9 June 2025
- ▼ sold on the open market 39,751 shares of Guardant HealthSEC Form 49 June 2025Common Stock · traded 6 June 2025 · filed 9 June 2025
- ▼ sold on the open market 77,853 shares of Guardant HealthSEC Form 49 June 2025Common Stock · traded 9 June 2025 · filed 9 June 2025
- ▼ sold on the open market 18,069 shares of Guardant HealthSEC Form 45 May 2025Common Stock · traded 1 May 2025 · filed 5 May 2025
- ▼ sold on the open market 38,477 shares of Guardant HealthSEC Form 45 May 2025Common Stock · traded 1 May 2025 · filed 5 May 2025
- ▼ sold on the open market 44,691 shares of Guardant HealthSEC Form 45 May 2025Common Stock · traded 1 May 2025 · filed 5 May 2025
- ▼ sold on the open market 3,445 shares of Guardant HealthSEC Form 45 May 2025Common Stock · traded 1 May 2025 · filed 5 May 2025
- ▼ sold on the open market 1,748 shares of Guardant HealthSEC Form 45 May 2025Common Stock · traded 1 May 2025 · filed 5 May 2025
- ▼ sold on the open market 354 shares of Guardant HealthSEC Form 45 May 2025Common Stock · traded 1 May 2025 · filed 5 May 2025
- ▼ sold on the open market 13,932 shares of Guardant HealthSEC Form 45 May 2025Common Stock · traded 2 May 2025 · filed 5 May 2025
- exercised options over 4,814 shares of Guardant Health (a derivative holding)SEC Form 42 April 2025Restricted Stock Units · traded 31 March 2025 · filed 2 April 2025
- exercised options over 23,998 shares of Guardant Health (a derivative holding)SEC Form 42 April 2025Restricted Stock Units · traded 1 April 2025 · filed 2 April 2025
- exercised options over 4,814 shares of Guardant HealthSEC Form 42 April 2025Common Stock · traded 31 March 2025 · filed 2 April 2025
- had shares withheld for tax on 2,440 shares of Guardant HealthSEC Form 42 April 2025Common Stock · traded 31 March 2025 · filed 2 April 2025
- exercised options over 23,998 shares of Guardant HealthSEC Form 42 April 2025Common Stock · traded 1 April 2025 · filed 2 April 2025
- had shares withheld for tax on 12,163 shares of Guardant HealthSEC Form 42 April 2025Common Stock · traded 1 April 2025 · filed 2 April 2025
- exercised options over 68,769 shares of Guardant Health (a derivative holding)SEC Form 418 March 2025Performance-Based Restricted Stock Units · traded 14 March 2025 · filed 18 March 2025
- exercised options over 68,769 shares of Guardant HealthSEC Form 418 March 2025Common Stock · traded 14 March 2025 · filed 18 March 2025
- had shares withheld for tax on 34,853 shares of Guardant HealthSEC Form 418 March 2025Common Stock · traded 14 March 2025 · filed 18 March 2025
- was granted 19,258 shares of Guardant Health (a derivative holding)SEC Form 413 March 2025Restricted Stock Units · traded 12 March 2025 · filed 13 March 2025
- was granted 116,010 shares of Guardant Health (a derivative holding)SEC Form 413 March 2025Restricted Stock Units · traded 12 March 2025 · filed 13 March 2025
- exercised options over 11,462 shares of Guardant Health (a derivative holding)SEC Form 43 January 2025Restricted Stock Units · traded 31 December 2024 · filed 3 January 2025
- exercised options over 94,555 shares of Guardant Health (a derivative holding)SEC Form 43 January 2025Restricted Stock Units · traded 1 January 2025 · filed 3 January 2025
- exercised options over 11,462 shares of Guardant HealthSEC Form 43 January 2025Common Stock · traded 31 December 2024 · filed 3 January 2025
- had shares withheld for tax on 5,809 shares of Guardant HealthSEC Form 43 January 2025Common Stock · traded 31 December 2024 · filed 3 January 2025
- exercised options over 94,555 shares of Guardant HealthSEC Form 43 January 2025Common Stock · traded 1 January 2025 · filed 3 January 2025
- had shares withheld for tax on 43,309 shares of Guardant HealthSEC Form 43 January 2025Common Stock · traded 1 January 2025 · filed 3 January 2025
- exercised options over 11,461 shares of Guardant Health (a derivative holding)SEC Form 41 October 2024Restricted Stock Units · traded 30 September 2024 · filed 1 October 2024
- exercised options over 11,461 shares of Guardant HealthSEC Form 41 October 2024Common Stock · traded 30 September 2024 · filed 1 October 2024
- had shares withheld for tax on 5,809 shares of Guardant HealthSEC Form 41 October 2024Common Stock · traded 30 September 2024 · filed 1 October 2024
- exercised options over 11,462 shares of Guardant Health (a derivative holding)SEC Form 42 July 2024Restricted Stock Units · traded 30 June 2024 · filed 2 July 2024
- exercised options over 11,462 shares of Guardant HealthSEC Form 42 July 2024Common Stock · traded 30 June 2024 · filed 2 July 2024
- had shares withheld for tax on 5,809 shares of Guardant HealthSEC Form 42 July 2024Common Stock · traded 30 June 2024 · filed 2 July 2024
- exercised options over 283,830 shares of Guardant Health (a derivative holding)SEC Form 46 May 2024Stock Option (Right to Buy) · traded 2 May 2024 · filed 6 May 2024
- exercised options over 283,830 shares of Guardant HealthSEC Form 46 May 2024Common Stock · traded 2 May 2024 · filed 6 May 2024
- exercised options over 11,461 shares of Guardant Health (a derivative holding)SEC Form 41 April 2024Restricted Stock Units · traded 31 March 2024 · filed 1 April 2024
- exercised options over 11,461 shares of Guardant HealthSEC Form 41 April 2024Common Stock · traded 31 March 2024 · filed 1 April 2024
- had shares withheld for tax on 4,509 shares of Guardant HealthSEC Form 41 April 2024Common Stock · traded 31 March 2024 · filed 1 April 2024
- acquired or disposed of, other 1,130,382 shares of Guardant Health (a derivative holding)SEC Form 422 March 2024Performance-Based Restricted Stock Units · traded 18 March 2024 · filed 22 March 2024
- was granted 45,846 shares of Guardant Health (a derivative holding)SEC Form 422 March 2024Restricted Stock Units · traded 18 March 2024 · filed 22 March 2024
- was granted 286,533 shares of Guardant Health (a derivative holding)SEC Form 422 March 2024Restricted Stock Units · traded 18 March 2024 · filed 22 March 2024
- ▲ bought on the open market 12,187 shares of Guardant HealthSEC Form 415 March 2023COMMON STOCK · traded 13 March 2023 · filed 15 March 2023
- ▲ bought on the open market 27,813 shares of Guardant HealthSEC Form 415 March 2023COMMON STOCK · traded 13 March 2023 · filed 15 March 2023
- ▲ bought on the open market 6,094 shares of Guardant HealthSEC Form 415 March 2023COMMON STOCK · traded 13 March 2023 · filed 15 March 2023
- ▲ bought on the open market 13,906 shares of Guardant HealthSEC Form 415 March 2023COMMON STOCK · traded 13 March 2023 · filed 15 March 2023
- ▲ bought on the open market 6,094 shares of Guardant HealthSEC Form 415 March 2023COMMON STOCK · traded 13 March 2023 · filed 15 March 2023
- ▲ bought on the open market 13,906 shares of Guardant HealthSEC Form 415 March 2023COMMON STOCK · traded 13 March 2023 · filed 15 March 2023
- ▲ bought on the open market 8,500 shares of Guardant HealthSEC Form 415 March 2023COMMON STOCK · traded 14 March 2023 · filed 15 March 2023
- ▲ bought on the open market 4,250 shares of Guardant HealthSEC Form 415 March 2023COMMON STOCK · traded 14 March 2023 · filed 15 March 2023
- ▲ bought on the open market 4,250 shares of Guardant HealthSEC Form 415 March 2023COMMON STOCK · traded 14 March 2023 · filed 15 March 2023
- ▲ bought on the open market 37,721 shares of Guardant HealthSEC Form 423 November 2021COMMON STOCK · traded 19 November 2021 · filed 23 November 2021
- ▲ bought on the open market 12,279 shares of Guardant HealthSEC Form 423 November 2021COMMON STOCK · traded 19 November 2021 · filed 23 November 2021
- ▲ bought on the open market 6,033 shares of Guardant HealthSEC Form 423 November 2021COMMON STOCK · traded 23 November 2021 · filed 23 November 2021
- ▲ bought on the open market 23,467 shares of Guardant HealthSEC Form 423 November 2021COMMON STOCK · traded 23 November 2021 · filed 23 November 2021
- ▲ bought on the open market 5,000 shares of Guardant HealthSEC Form 423 November 2021COMMON STOCK · traded 23 November 2021 · filed 23 November 2021
- ▲ bought on the open market 5,000 shares of Guardant HealthSEC Form 423 November 2021COMMON STOCK · traded 23 November 2021 · filed 23 November 2021
- ▲ bought on the open market 14,900 shares of Guardant HealthSEC Form 423 November 2021COMMON STOCK · traded 23 November 2021 · filed 23 November 2021
- ▲ bought on the open market 100 shares of Guardant HealthSEC Form 423 November 2021COMMON STOCK · traded 23 November 2021 · filed 23 November 2021
- exercised options over 23,923 shares of Guardant Health (a derivative holding)SEC Form 417 August 2021STOCK OPTION (RIGHT TO BUY) · traded 13 August 2021 · filed 17 August 2021
- exercised options over 23,923 shares of Guardant HealthSEC Form 417 August 2021COMMON STOCK · traded 13 August 2021 · filed 17 August 2021
- ▼ sold on the open market 43,364 shares of Guardant HealthSEC Form 417 February 2021COMMON STOCK · traded 2 February 2021 · filed 17 February 2021
- ▼ sold on the open market 15,676 shares of Guardant HealthSEC Form 417 February 2021COMMON STOCK · traded 2 February 2021 · filed 17 February 2021
- ▼ sold on the open market 17,988 shares of Guardant HealthSEC Form 417 February 2021COMMON STOCK · traded 4 February 2021 · filed 17 February 2021
- ▼ sold on the open market 13,874 shares of Guardant HealthSEC Form 417 February 2021COMMON STOCK · traded 4 February 2021 · filed 17 February 2021
- ▼ sold on the open market 1,315 shares of Guardant HealthSEC Form 417 February 2021COMMON STOCK · traded 4 February 2021 · filed 17 February 2021
- ▼ sold on the open market 4,069 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 10 February 2021 · filed 12 February 2021
- ▼ sold on the open market 4,579 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 10 February 2021 · filed 12 February 2021
- ▼ sold on the open market 709 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 10 February 2021 · filed 12 February 2021
- ▼ sold on the open market 5,007 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 10 February 2021 · filed 12 February 2021
- ▼ sold on the open market 4,583 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 10 February 2021 · filed 12 February 2021
- ▼ sold on the open market 4,594 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 10 February 2021 · filed 12 February 2021
- ▼ sold on the open market 27,471 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 10 February 2021 · filed 12 February 2021
- ▼ sold on the open market 2,292 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 10 February 2021 · filed 12 February 2021
- ▼ sold on the open market 5,000 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 10 February 2021 · filed 12 February 2021
- ▼ sold on the open market 492 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 10 February 2021 · filed 12 February 2021
- ▼ sold on the open market 701 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 10 February 2021 · filed 12 February 2021
- ▼ sold on the open market 141 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 10 February 2021 · filed 12 February 2021
- ▼ sold on the open market 759 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 10 February 2021 · filed 12 February 2021
- ▼ sold on the open market 621 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 10 February 2021 · filed 12 February 2021
- ▼ sold on the open market 653 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 10 February 2021 · filed 12 February 2021
- ▼ sold on the open market 4,497 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 10 February 2021 · filed 12 February 2021
- ▼ sold on the open market 496 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 10 February 2021 · filed 12 February 2021
- ▼ sold on the open market 329 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 10 February 2021 · filed 12 February 2021
- ▼ sold on the open market 2,308 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 11 February 2021 · filed 12 February 2021
- ▼ sold on the open market 1,372 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 11 February 2021 · filed 12 February 2021
- ▼ sold on the open market 48,728 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 11 February 2021 · filed 12 February 2021
- ▼ sold on the open market 44,676 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 11 February 2021 · filed 12 February 2021
- ▼ sold on the open market 49,899 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 11 February 2021 · filed 12 February 2021
- ▼ sold on the open market 50,245 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 11 February 2021 · filed 12 February 2021
- ▼ sold on the open market 5,023 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 11 February 2021 · filed 12 February 2021
- ▼ sold on the open market 144 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 11 February 2021 · filed 12 February 2021
- ▼ sold on the open market 204 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 11 February 2021 · filed 12 February 2021
- ▼ sold on the open market 7,116 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 11 February 2021 · filed 12 February 2021
- ▼ sold on the open market 6,764 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 11 February 2021 · filed 12 February 2021
- ▼ sold on the open market 9,301 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 11 February 2021 · filed 12 February 2021
- ▼ sold on the open market 5,632 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 11 February 2021 · filed 12 February 2021
- ▼ sold on the open market 981 shares of Guardant HealthSEC Form 412 February 2021COMMON STOCK · traded 11 February 2021 · filed 12 February 2021
- ▼ sold on the open market 567 shares of Guardant HealthSEC Form 49 February 2021COMMON STOCK · traded 5 February 2021 · filed 9 February 2021
- ▼ sold on the open market 2,071 shares of Guardant HealthSEC Form 49 February 2021COMMON STOCK · traded 5 February 2021 · filed 9 February 2021
- ▼ sold on the open market 30,028 shares of Guardant HealthSEC Form 49 February 2021COMMON STOCK · traded 5 February 2021 · filed 9 February 2021
- ▼ sold on the open market 32,240 shares of Guardant HealthSEC Form 49 February 2021COMMON STOCK · traded 5 February 2021 · filed 9 February 2021
- ▼ sold on the open market 126,582 shares of Guardant HealthSEC Form 49 February 2021COMMON STOCK · traded 5 February 2021 · filed 9 February 2021
- ▼ sold on the open market 10,373 shares of Guardant HealthSEC Form 49 February 2021COMMON STOCK · traded 5 February 2021 · filed 9 February 2021
- ▼ sold on the open market 84 shares of Guardant HealthSEC Form 49 February 2021COMMON STOCK · traded 5 February 2021 · filed 9 February 2021
- ▼ sold on the open market 406 shares of Guardant HealthSEC Form 49 February 2021COMMON STOCK · traded 5 February 2021 · filed 9 February 2021
- ▼ sold on the open market 4,512 shares of Guardant HealthSEC Form 49 February 2021COMMON STOCK · traded 5 February 2021 · filed 9 February 2021
- ▼ sold on the open market 4,825 shares of Guardant HealthSEC Form 49 February 2021COMMON STOCK · traded 5 February 2021 · filed 9 February 2021
- ▼ sold on the open market 19,096 shares of Guardant HealthSEC Form 49 February 2021COMMON STOCK · traded 5 February 2021 · filed 9 February 2021
- ▼ sold on the open market 1,161 shares of Guardant HealthSEC Form 49 February 2021COMMON STOCK · traded 5 February 2021 · filed 9 February 2021
- ▼ sold on the open market 14,416 shares of Guardant HealthSEC Form 49 February 2021COMMON STOCK · traded 8 February 2021 · filed 9 February 2021
- ▼ sold on the open market 49,237 shares of Guardant HealthSEC Form 49 February 2021COMMON STOCK · traded 8 February 2021 · filed 9 February 2021
- ▼ sold on the open market 28,995 shares of Guardant HealthSEC Form 49 February 2021COMMON STOCK · traded 8 February 2021 · filed 9 February 2021
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.