AmirAli Talasaz
Co-Chief Executive Officer at Guardant Health Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: Guardant Health Inc., 3 years.
Chief executive roles
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
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Guardant Health Inc. June 12, 202499.5%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Aug 21, 2026 | Guardant Health Inc. | Open-market sale | −9,023 | $168.20 | $1,517,631 |
| Aug 21, 2026 | Guardant Health Inc. | Open-market sale | −20,888 | $169.16 | $3,533,452 |
| Aug 21, 2026 | Guardant Health Inc. | Open-market sale | −7,589 | $170.29 | $1,292,302 |
| Aug 10, 2026 | Guardant Health Inc. | Gift | −75,000 | — | — |
| Aug 10, 2026 | Guardant Health Inc. | Gift | +75,000 | — | — |
| Jul 1, 2026 | Guardant Health Inc. | Option exercise | +23,997 | — | — |
| Jul 1, 2026 | Guardant Health Inc. | Option exercise | +9,715 | — | — |
| Jul 1, 2026 | Guardant Health Inc. | Shares withheld for tax | −17,086 | $170.77 | $2,917,776 |
| Jun 30, 2026 | Guardant Health Inc. | Option exercise | +2,817 | — | — |
| Jun 30, 2026 | Guardant Health Inc. | Shares withheld for tax | −1,428 | $150.03 | $214,243 |
| Jun 29, 2026 | Guardant Health Inc. | Option exercise | +143,028 | $4.18 | $597,857 |
| Jun 29, 2026 | Guardant Health Inc. | Open-market sale | −25,812 | $150.53 | $3,885,480 |
| Jun 29, 2026 | Guardant Health Inc. | Open-market sale | −70,513 | $151.47 | $10,680,604 |
| Jun 29, 2026 | Guardant Health Inc. | Open-market sale | −46,663 | $152.20 | $7,102,109 |
| Jun 29, 2026 | Guardant Health Inc. | Open-market sale | −40 | $153.00 | $6,120 |
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