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Joyce Meghan V.
Director
Meghan Joyce has served as a member of our Board since August 2021. She is co-founder and CEO of Duckbill Technologies, Inc., a consumer tech startup, a role she has held since April 2022, and also serves as an independent director and advisor to select high growth organizations in the healthcare and consumer space. Previously, from September 2019 to April 2022, Ms. Joyce served as Chief Operating Officer and Executive Vice President of Platform at Oscar Health, a high-growth health tech and health insurance company, where she led operations, technology, clinical, marketing, and new business lines. Prior to joining Oscar Health, from 2013 to 2019, Ms. Joyce held several leadership roles at Uber…
Biography from the company’s latest DEF 14A proxy statement
Guardant Health, Inc. 15 open-market prints by this insider, 6/15/2023 – 6/3/2026. Triangles mark only their Form 4 purchases and sales. Full GH chart
GH trades
| Date | Form 4 | Ticker | Side | Shares | Value | 90d | 180d |
|---|---|---|---|---|---|---|---|
| 6/3/2026 | Form 410b5-1 | Guardant Health, Inc · Services-Medical LaboratoriesIndustryServices-Medical LaboratoriesMkt cap (est.)$60.10BPrice$179.3852w high$183.1052w low$57.67 | SELL | 3,516 | $444.8K | −29.4% | −16.4%hist |
| 6/3/2026 | Form 410b5-1 | Guardant Health, Inc · Services-Medical LaboratoriesIndustryServices-Medical LaboratoriesMkt cap (est.)$60.10BPrice$179.3852w high$183.1052w low$57.67 | SELL | 650 | $83.2K | −29.4% | −16.4%hist |
| 6/3/2026 | Form 410b5-1 | Guardant Health, Inc · Services-Medical LaboratoriesIndustryServices-Medical LaboratoriesMkt cap (est.)$60.10BPrice$179.3852w high$183.1052w low$57.67 | SELL | 106 | $13.7K | −29.4% | −16.4%hist |
| 6/3/2026 | Form 410b5-1 | Guardant Health, Inc · Services-Medical LaboratoriesIndustryServices-Medical LaboratoriesMkt cap (est.)$60.10BPrice$179.3852w high$183.1052w low$57.67 | SELL | 5,728 | $728.1K | −29.4% | −16.4%hist |
| 9/2/2025 | Form 410b5-1 | Guardant Health, Inc · Services-Medical LaboratoriesIndustryServices-Medical LaboratoriesMkt cap (est.)$60.10BPrice$179.3852w high$183.1052w low$57.67 | SELL | 100 | $6.6K | −58.2% | −38.7% |
| 6/13/2025 | Form 410b5-1 | Guardant Health, Inc · Services-Medical LaboratoriesIndustryServices-Medical LaboratoriesMkt cap (est.)$60.10BPrice$179.3852w high$183.1052w low$57.67 | SELL | 3,337 | $157.6K | −15.2% | −108.2% |
| 6/2/2025 | Form 410b5-1 | Guardant Health, Inc · Services-Medical LaboratoriesIndustryServices-Medical LaboratoriesMkt cap (est.)$60.10BPrice$179.3852w high$183.1052w low$57.67 | SELL | 100 | $4.2K | −58.0% | −149.9% |
| 3/3/2025 | Form 410b5-1 | Guardant Health, Inc · Services-Medical LaboratoriesIndustryServices-Medical LaboratoriesMkt cap (est.)$60.10BPrice$179.3852w high$183.1052w low$57.67 | SELL | 100 | $4.3K | −3.34% | −63.3% |
| 12/2/2024 | Form 410b5-1 | Guardant Health, Inc · Services-Medical LaboratoriesIndustryServices-Medical LaboratoriesMkt cap (est.)$60.10BPrice$179.3852w high$183.1052w low$57.67 | SELL | 100 | $3.6K | −14.7% | −18.5% |
| 11/13/2024 | Form 410b5-1 | Guardant Health, Inc · Services-Medical LaboratoriesIndustryServices-Medical LaboratoriesMkt cap (est.)$60.10BPrice$179.3852w high$183.1052w low$57.67 | SELL | 2,896 | $86.6K | −37.9% | −31.8% |
| 6/4/2024 | Form 410b5-1 | Guardant Health, Inc · Services-Medical LaboratoriesIndustryServices-Medical LaboratoriesMkt cap (est.)$60.10BPrice$179.3852w high$183.1052w low$57.67 | SELL | 100 | $2.8K | +12.2% | −26.9% |
| 3/4/2024 | Form 410b5-1 | Guardant Health, Inc · Services-Medical LaboratoriesIndustryServices-Medical LaboratoriesMkt cap (est.)$60.10BPrice$179.3852w high$183.1052w low$57.67 | SELL | 100 | $1.9K | −44.9% | −29.9% |
| 12/4/2023 | Form 410b5-1 | Guardant Health, Inc · Services-Medical LaboratoriesIndustryServices-Medical LaboratoriesMkt cap (est.)$60.10BPrice$179.3852w high$183.1052w low$57.67 | SELL | 100 | $2.6K | +29.7% | −1.78% |
| 9/5/2023 | Form 410b5-1 | Guardant Health, Inc · Services-Medical LaboratoriesIndustryServices-Medical LaboratoriesMkt cap (est.)$60.10BPrice$179.3852w high$183.1052w low$57.67 | SELL | 100 | $3.5K | +23.7% | +46.4% |
| 6/15/2023 | Form 410b5-1 | Guardant Health, Inc · Services-Medical LaboratoriesIndustryServices-Medical LaboratoriesMkt cap (est.)$60.10BPrice$179.3852w high$183.1052w low$57.67 | SELL | 2,766 | $103.9K | +14.8% | +29.2% |
Chart uses split-adjusted closes from the first print through the latest available bar. Returns use the last close on or before the trade date and the first close on or after 90 and 180 calendar days. Sales are signed so a declining price is a positive result for the seller. Not investment advice.