GH Stock: Insider Activity, Filings & Research
Guardant Health, Inc. (GH) — Drillr’s hub for GH insider activity, SEC filings, earnings signals and AI research. Over the trailing 3 months, GH insiders filed 0 open-market buys and 30 sales (SEC Form 4).
GH insider trading activity (SEC Form 4)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Jun 1, 2026 | Krognes Steve E.director | Option | 154 | — |
| May 29, 2026 | Hidalgo Medina Manueldirector | Sell | 1,000 | $130.06 |
| May 28, 2026 | Saia John G.officer: Chief Legal Officer | Sell | 9,994 | $125.08 |
| May 28, 2026 | Saia John G.officer: Chief Legal Officer | Sell | 6 | $126.08 |
| May 26, 2026 | Freeman Chrisofficer: Chief Commercial Officer | Option | 24,406 | $32.86 |
| May 26, 2026 | Freeman Chrisofficer: Chief Commercial Officer | Sell | 24,406 | $118.67 |
| May 22, 2026 | Talasaz AmirAlidirector, officer: Co-Chief Executive Officer | Sell | 37,900 | $112.02 |
| May 22, 2026 | Talasaz AmirAlidirector, officer: Co-Chief Executive Officer | Sell | 900 | $102.57 |
| May 22, 2026 | Talasaz AmirAlidirector, officer: Co-Chief Executive Officer | Sell | 33,069 | $108.11 |
| May 22, 2026 | Talasaz AmirAlidirector, officer: Co-Chief Executive Officer | Sell | 1,366 | $103.82 |
| May 22, 2026 | CLARK IAN Tdirector | Sell | 6,876 | $106.90 |
| May 22, 2026 | Hidalgo Medina Manueldirector | Option | 1,000 | $32.55 |
| May 22, 2026 | Talasaz AmirAlidirector, officer: Co-Chief Executive Officer | Sell | 11,919 | $105.01 |
| May 22, 2026 | Hidalgo Medina Manueldirector | Sell | 1,000 | $107.10 |
| May 22, 2026 | Saia John G.officer: Chief Legal Officer | Sell | 5,632 | $105.34 |
Source: GH SEC Form 4 filings, latest Jun 1, 2026. For informational purposes only — not investment advice.
Guardant Health, Inc. company profile
Overview
Guardant Health, Inc. (NASDAQ:GH) is a precision oncology company founded in 2011 and headquartered in Redwood City, California. The company went public in October 2018 and has established itself as a leader in liquid biopsy technology, which uses blood tests to detect and analyze cancer-related genetic material. Guardant Health operates primarily in the United States with expanding international presence, serving oncologists, patients, and biopharmaceutical companies with innovative blood-based cancer testing solutions.
Business
Guardant Health operates in the precision oncology diagnostics industry, developing and commercializing liquid biopsy tests that analyze circulating tumor DNA (ctDNA) and other biomarkers found in blood samples. Liquid biopsy represents a revolutionary approach to cancer diagnostics, offering a less invasive alternative to traditional tissue biopsies by detecting cancer-related genetic material that tumors shed into the bloodstream. The company's business is organized around three main segments: 1. **Oncology Clinical Testing (~75% of revenue)**: The flagship Guardant360 test serves advanced cancer patients by analyzing 739 genes to identify actionable mutations that can guide targeted therapy selection. The company also offers GuardantOMNI for comprehensive genomic profiling and Guardant Reveal for minimal residual disease (MRD) detection, which monitors whether cancer remains in the body after treatment. Additionally, Guardant provides tissue-based testing through its Guardant360 Tissue product, requiring 40% less tissue than traditional methods. 2. **Biopharma Services (~20% of revenue)**: Through partnerships with over 180 biopharmaceutical companies, Guardant provides companion diagnostic development, clinical trial support, and regulatory services. The company's Smart Liquid Biopsy platform enables drug developers to identify patients most likely to respond to specific treatments and monitor treatment efficacy. 3. **Screening (~5% of revenue)**: The recently launched Shield test represents the first FDA-approved blood test for colorectal cancer screening in average-risk individuals aged 45-84. This test addresses the significant problem of low screening compliance, as traditional colonoscopy screening has participation rates of only about 60% in the eligible population. The company also operates GuardantINFORM, a research platform containing clinical-genomic data from advanced cancer patients, and is developing multi-cancer detection capabilities for early-stage cancer screening.
Revenue model
Guardant Health generates revenue through multiple complementary business models centered around its liquid biopsy technology platform. The primary revenue streams include direct-pay clinical testing services, biopharma partnerships, and emerging screening test sales. For oncology clinical testing, the company charges healthcare providers and payers per test performed. The Guardant360 test commands an average selling price (ASP) of approximately $3,000, significantly higher than the original target of $2,850-2,900 set for 2028. This premium pricing reflects the test's comprehensive 739-gene panel and clinical utility in guiding treatment decisions for advanced cancer patients. The Reveal MRD test and tissue testing products generate additional per-test revenue streams. The biopharma segment operates on a fee-for-service model, providing companion diagnostic development, clinical study support, and testing services to pharmaceutical companies developing cancer therapies. This business benefits from the industry trend toward personalized medicine, where drug approvals increasingly require companion diagnostics to identify appropriate patient populations. The screening business represents a significant growth opportunity, with the Shield test priced at $1,495 for Medicare beneficiaries following its Advanced Diagnostic Laboratory Test (ADLT) designation. The company targets the 120 million Americans eligible for colorectal cancer screening, addressing a market with historically low compliance rates. Revenue growth drivers include expanding test utilization among existing oncology accounts, geographic expansion, new product launches, and increasing reimbursement coverage. The company benefits from secular trends including aging demographics, rising cancer incidence, growing adoption of precision medicine, and increasing preference for less invasive diagnostic procedures. Margin pressures could arise from competitive pricing dynamics, reimbursement rate reductions, regulatory changes affecting coverage policies, or technological disruption from alternative diagnostic approaches. Conversely, margins benefit from economies of scale in laboratory operations, improved test performance requiring less sample processing, and premium pricing for differentiated products with strong clinical evidence.
Competitive moat
Guardant Health's competitive moat stems from several interconnected factors, though the strength of these advantages varies across its business segments. The company's most significant moat lies in its extensive clinical validation and regulatory approvals, particularly the FDA approval of Shield as the first blood-based colorectal cancer screening test. This first-mover advantage provides meaningful protection, as subsequent competitors must demonstrate superior performance to gain market acceptance. The company's Smart Liquid Biopsy platform represents a technological moat built on years of research and development, extensive genomic databases, and proprietary algorithms for detecting and analyzing circulating tumor DNA. The platform's ability to process multiple test types on a single infrastructure creates operational efficiencies and cross-selling opportunities that are difficult for competitors to replicate quickly. Guardant's relationships with over 180 biopharmaceutical partners create a network effect moat, where each new partnership generates data that improves the platform's capabilities, making it more attractive to additional partners. The company's clinical-genomic dataset from hundreds of thousands of patients provides valuable insights that enhance test performance and support new product development. However, the moat faces several challenges. The liquid biopsy field is rapidly evolving with well-funded competitors including Grail (owned by Illumina), Exact Sciences, and Natera. These companies possess similar technological capabilities and are pursuing overlapping market opportunities. Additionally, the core technology relies on next-generation sequencing platforms primarily supplied by Illumina, creating supplier concentration risk. The screening market presents both the greatest opportunity and the most competitive threat. While Guardant currently holds first-mover advantage with Shield, the large market opportunity will likely attract significant competition from established diagnostics companies and well-funded startups. The company's moat in screening depends on maintaining superior test performance, building strong physician relationships, and achieving favorable reimbursement terms before competitors enter the market. Overall, Guardant Health maintains a moderate but not insurmountable competitive moat, with strength varying by business segment and time horizon.
Risks & safety
The company presents moderate financial risk with mixed safety indicators: **Cash Position and Burn Rate:** - Cash and short-term investments: $699 million as of Q1 2025 - Quarterly cash burn: approximately $67 million in free cash flow - Current cash runway: approximately 2.5-3 years at current burn rate - Management targeting cash flow breakeven by 2028 **Debt and Solvency:** - Strong current ratio of 4.1x indicating good short-term liquidity - Quick ratio of 3.8x demonstrates ability to meet immediate obligations - Negative shareholders' equity of -$251 million due to accumulated losses - Debt-to-equity ratio distorted by negative equity but manageable debt levels **Valuation Metrics:** - EV/EBITDA not meaningful due to negative EBITDA - Trading at approximately 7.3x trailing revenue (based on $739M 2024 revenue) - Price-to-book ratio not applicable due to negative book value - High revenue growth (31% in 2024) supporting growth premium **Other Considerations:** - Revenue visibility improving with Medicare coverage for key products - Operating leverage potential as business scales - Regulatory approval risks for pipeline products - Competitive pressure in rapidly evolving market
Recent development
Over the past few years, Guardant Health has executed several strategic initiatives to expand its market presence and product portfolio. The most significant development was achieving FDA approval for the Shield colorectal cancer screening test in 2024, making it the first blood-based screening test approved for average-risk individuals. This milestone was followed by Medicare coverage at $920 per test, with Advanced Diagnostic Laboratory Test (ADLT) status achieved in 2025, increasing reimbursement to $1,495. The company has substantially upgraded its core Guardant360 platform, expanding the gene panel from approximately 70 genes to 739 genes on its Smart Liquid Biopsy platform. This nearly 10-fold increase in testing capability has enabled the company to achieve premium pricing, with average selling prices reaching $3,000, four years ahead of the original 2028 target. In the minimal residual disease (MRD) testing space, Guardant has made significant progress with its Reveal test, achieving Medicare reimbursement for colorectal cancer surveillance and demonstrating strong clinical performance in breast cancer applications. The company has reduced cost of goods sold for Reveal by over 50% and expects the product to achieve gross margin positivity in 2025. International expansion has accelerated, with new laboratory facilities in Spain, partnerships in Japan and China, and a recent collaboration with Abu Dhabi for Shield test distribution. The company has also strengthened its biopharma services business, with the Smart Liquid Biopsy platform now representing over 50% of new contract samples. Looking forward, Guardant is developing multi-cancer detection capabilities, with selection for the National Cancer Institute's Vanguard study demonstrating 60% overall sensitivity for 10 different cancer types. The company is also pursuing lung cancer screening as a second indication for its screening platform and continues to expand the clinical applications of its MRD testing across multiple cancer types.
GH company profile · for informational purposes only — not investment advice.
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