Investor Presentaiton

Guardant has created momentum for National Biomarker Testing Coverage INVESTOR 20 DAY 23 In many cases will support private payer coverage for both Therapy Selection and MRD GUARDANT™ As of August 13, 2023 State Biomarker Legislation Enacted (signed into law) Passed legislation (pending gubernatorial action) In current legislative process Introduced but did not advance 12 states enacted laws for biomarker testing 5+ states have current legislation in progress 87

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