Investor Presentaiton

Power of More Data Learning from data for continuous improvement Technology paradigm shift for radical change in capability GUARDANT™ Tumor Fraction, % Continuous improvement INVESTOR 20 DAY 23 Continuous improvement GUARDANT 360CDX 1% 1% GUARDANTREVEAL shield™ 0.1% 0.01% 0.001% Source: Internal data on file 0.1% 0.01% Technology Paradigm Shift Data growth 0.001% Data growth 43 3

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