As of September 12, 2026, Guardant Health's top three insider holders are Helmy Eltoukhy (Co Chief Executive Officer, 2.05Mn shares), Helmy Eltoukhy (Co Chief Executive Officer, 2.00Mn shares), Amirali Talasaz (Co Chief Executive Officer, 1.95Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Helmy Eltoukhy | Co Chief Executive Officer | 2,049,238 | 2,000,934 | 4,050,172 | 47.3% | 27 Aug, 2026 |
| 2 | Amirali Talasaz | Co Chief Executive Officer | 1,902,345 | 1,910,351 | 3,812,696 | 44.5% | 24 Aug, 2026 |
| 3 | Darya Chudova | Chief Technology Officer | 113,678 | 0 | 113,678 | 1.3% | 02 Jul, 2026 |
| 4 | Craig Eagle | Chief Medical Officer | 82,360 | 0 | 82,360 | 1.0% | 02 Apr, 2026 |
| 5 | Chris Freeman | Chief Commercial Officer | 79,947 | 0 | 79,947 | 0.9% | 11 Aug, 2026 |
| 6 | Michael Brian Bell | Chief Financial Officer | 63,465 | 0 | 63,465 | 0.7% | 02 Jul, 2026 |
| 7 | John G. Saia | Chief Legal Officer | 60,167 | 0 | 60,167 | 0.7% | 12 Aug, 2026 |
| 8 | Amelia Merrill | Svp, People | 54,857 | 0 | 54,857 | 0.6% | 04 Mar, 2024 |
| 9 | Kumud Kalia | Chief Information Officer | 53,873 | 0 | 53,873 | 0.6% | 02 Jul, 2026 |
| 10 | Vijaya Gadde | Director | 40,565 | 0 | 40,565 | 0.5% | 22 Jun, 2026 |
| 11 | Myrtle S Potter | Director | 29,647 | 0 | 29,647 | 0.3% | 23 Jun, 2026 |
| 12 | Terilyn J. Monroe | Chief People Officer | 22,979 | 0 | 22,979 | 0.3% | 13 Aug, 2026 |
| 13 | Meghan V. Joyce | Director | 19,875 | 0 | 19,875 | 0.2% | 22 Jun, 2026 |
| 14 | Steve E. Krognes | Director | 17,356 | 0 | 17,356 | 0.2% | 02 Jul, 2026 |
| 15 | Ian T Clark | Director | 8,901 | 2,975 | 11,876 | 0.1% | 05 Aug, 2026 |
| 16 | Samir Kaul | Director | 11,404 | 0 | 11,404 | 0.1% | 16 Jun, 2023 |
| 17 | Musa Tariq | Director | 11,316 | 0 | 11,316 | 0.1% | 18 Aug, 2026 |
| 18 | Roberto Mignone | Director | 10,010 | 0 | 10,010 | 0.1% | 24 Aug, 2026 |
| 19 | Bahija Jallal | Director | 7,408 | 0 | 7,408 | 0.1% | 17 Jun, 2022 |
| 20 | Stanley J Meresman | Director | 5,873 | 0 | 5,873 | 0.1% | 17 Jun, 2022 |
| 21 | Medina Manuel Hidalgo | Director | 4,788 | 0 | 4,788 | 0.1% | 18 Aug, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 26 Aug, 2026 | Helmy Eltoukhy | Co Chief Executive Officer | Disposed J | 25,000 | $0.00 | $0 | 1,970,934 | Indirect |
| 26 Aug, 2026 | Helmy Eltoukhy | Co Chief Executive Officer | Acquired J | 25,000 | $0.00 | $0 | 60,000 | Indirect |
| 26 Aug, 2026 | Helmy Eltoukhy | Co Chief Executive Officer | Disposed G | 30,000 | $0.00 | $0 | 1,940,934 | Indirect |
| 21 Aug, 2026 | Amirali Talasaz | Co Chief Executive Officer | Disposed S | 9,023 | $168.20 | $1.52Mn | 65,977 | Indirect |
| 21 Aug, 2026 | Roberto Mignone | Director | Acquired M | 264 | $0.00 | $0 | 10,010 | Direct |
| 21 Aug, 2026 | Amirali Talasaz | Co Chief Executive Officer | Disposed S | 20,888 | $169.16 | $3.53Mn | 45,089 | Indirect |
| 21 Aug, 2026 | Roberto Mignone | Director | Disposed M | 264 | $0.00 | $0 | 6,864 | Direct |
| 21 Aug, 2026 | Amirali Talasaz | Co Chief Executive Officer | Disposed S | 7,589 | $170.29 | $1.29Mn | 37,500 | Indirect |
| 17 Aug, 2026 | Medina Manuel Hidalgo | Director | Acquired M | 232 | $0.00 | $0 | 4,788 | Direct |
| 15 Aug, 2026 | Musa Tariq | Director | Acquired M | 250 | $0.00 | $0 | 11,432 | Direct |
| 17 Aug, 2026 | Musa Tariq | Director | Disposed S | 116 | $156.45 | $18.15K | 11,316 | Direct |
| 17 Aug, 2026 | Medina Manuel Hidalgo | Director | Disposed M | 232 | $0.00 | $0 | 5,337 | Direct |
| 15 Aug, 2026 | Musa Tariq | Director | Disposed M | 250 | $0.00 | $0 | 1,749 | Direct |
| 12 Aug, 2026 | Terilyn J. Monroe | Chief People Officer | Acquired M | 32,288 | $20.14 | $650.28K | 55,267 | Direct |
| 12 Aug, 2026 | Terilyn J. Monroe | Chief People Officer | Acquired M | 14,012 | $28.61 | $400.88K | 69,279 | Direct |
| 12 Aug, 2026 | Terilyn J. Monroe | Chief People Officer | Disposed S | 3,704 | $163.41 | $605.29K | 65,575 | Direct |
| 12 Aug, 2026 | Terilyn J. Monroe | Chief People Officer | Disposed S | 9,934 | $164.27 | $1.63Mn | 55,641 | Direct |
| 12 Aug, 2026 | Terilyn J. Monroe | Chief People Officer | Disposed S | 19,014 | $165.16 | $3.14Mn | 36,627 | Direct |
| 12 Aug, 2026 | Terilyn J. Monroe | Chief People Officer | Disposed S | 13,248 | $166.11 | $2.20Mn | 23,379 | Direct |
| 12 Aug, 2026 | Terilyn J. Monroe | Chief People Officer | Disposed S | 400 | $167.92 | $67.17K | 22,979 | Direct |