PALO ALTO, Calif. February 23, 2023 – Guardant Health, Inc. (Nasdaq: GH), a leading precision oncology company focused on helping conquer cancer globally through use of its proprietary tests, vast data sets and advanced analytics, today reported financial results for the quarter and full year ended December 31, 2022.

•Revenue of $126.9 million for the fourth quarter of 2022, an increase of 17% over the fourth quarter of 2021.

•Reported 36,000 tests to clinical customers and 8,200 tests to biopharmaceutical customers in the fourth quarter of 2022, representing an increase of 41% and 24%, respectively, over the fourth quarter of 2021.

•Revenue of $449.5 million for the full year 2022, an increase of 20% over the full year 2021.

•Reported 124,800 tests to clinical customers and 26,000 tests to biopharmaceutical customers in the full year 2022, representing an increase of 42% and 40%, respectively, over the full year 2021.

•Demonstrated 83% sensitivity and 90% specificity in pivotal ECLIPSE study evaluating Shield for colorectal cancer detection. Separately, Guardant Shield LDT has shown greater than 90% adherence in real world settings.

•Announced FDA approval for Guardant360 CDx as companion diagnostic for ORSERDU for treatment of patients with ESR1 mutations in ER+, HER2- advanced or metastatic breast cancer.

•Obtained coverage for Guardant360 CDx tests in lung and breast cancer from United Healthcare.

•Introduced Guardant Galaxy suite of advanced AI analytics in partnership with Lunit to enhance our portfolio of cancer tests starting with the Guardant360 TissueNext PD-L1 test, shown to improve biomarker detection by >20% in NSCLC.

“2022 marked another year of great progress at Guardant Health. We achieved record revenues and volumes during the year, launched new offerings in minimal residual disease with multi cancer Reveal and expanded market access for our tests. We also launched our Smart Liquid Biopsy platform, which we believe will drive the next chapter of growth for our oncology business and enable significant R&D efficiency and operating leverage. With the approval of our first companion diagnostic in breast cancer and expanded payor coverage, we are poised for continued strong growth in the year ahead,” said Helmy Eltoukhy, co-founder and co-CEO.

“In December, we reported successful results in our pivotal ECLIPSE study for colorectal cancer screening with 83% sensitivity at 90% specificity. With over 90% of individuals completing the blood-based screening test, Shield significantly improves adherence rates and adds an important new option for patients and healthcare providers to boost screening rates, detect more cancers and save countless lives,” said AmirAli Talasaz, co-founder and co-CEO. “We intend to complete our submission to FDA in the first quarter of 2023 as we continue our research and development efforts in screening for lung and additional cancers.”

Revenue was $126.9 million for the three months ended December 31, 2022, a 17% increase from $108.1 million for the three months ended December 31, 2021. Precision oncology revenue grew 28%, driven predominantly by an increase in clinical testing volume and biopharma sample volume, which grew 41% and 24%, respectively, over the prior year period. Development services and other revenue decreased by 33%, primarily due to a one-time catch-up royalty payment that was recognized in the fourth quarter of 2021.

Gross profit, or total revenue less cost of precision oncology testing and cost of development services and other, was $79.8 million for the fourth quarter of 2022, an increase of $5.1 million from $74.7 million for the corresponding prior year period. Gross margin, or gross profit divided by total revenue, was 63%, as compared to 69% for the corresponding prior year period.

Operating expenses were $225.9 million for the fourth quarter of 2022, as compared to $172.9 million for the corresponding prior year period, an increase of 31%. Non-GAAP operating expenses were $201.2 million for the fourth quarter of 2022, as compared to $146.2 million for the corresponding prior year period.

Net loss attributable to Guardant Health, Inc. common stockholders was $139.9 million for the fourth quarter of 2022, as compared to $90.9 million for the corresponding prior year period. Net loss per share attributable to Guardant Health, Inc. common stockholders was $1.36 for the fourth quarter of 2022, as compared to $0.89 for the corresponding prior year period. Non-GAAP net loss was $119.6 million for the fourth quarter of 2022, as compared to $70.4 million for the corresponding prior year period. Non-GAAP net loss per share was $1.17 for the fourth quarter of 2022, as compared to $0.69 for the corresponding prior year period.

Adjusted EBITDA loss was $109.8 million for the fourth quarter of 2022, as compared to a $64.6 million loss for the corresponding prior year period.

Revenue was $449.5 million for the year ended December 31, 2022, a 20% increase from $373.7 million for the year ended December 31, 2021. Precision oncology revenue grew 29%, driven predominantly by an increase in clinical testing volume and biopharma sample volume, which grew 42% and 40%, respectively, over the prior year period. Development services and other revenue decreased by 17%, primarily due to the change in collaboration projects with biopharmaceutical customers for companion diagnostic development and regulatory approval services, and discontinuation of our Guardant-19 tests in August 2021, partially offset by revenues earned from licensing our technologies, and providing data services during the year ended December 31, 2022.

Gross profit, or total revenue less cost of precision oncology testing and cost of development services and other, was $293.2 million for 2022, an increase of $42.5 million from $250.7 million for the corresponding prior year period. Gross margin, or gross profit divided by total revenue, was 65%, as compared to 67% for the corresponding prior year period.

Operating expenses were $837.6 million for 2022, as compared to $661.7 million for the corresponding prior year period, an increase of 27%. Non-GAAP operating expenses were $736.6 million for 2022, as compared to $506.8 million for the corresponding prior year period.

Net loss attributable to Guardant Health, Inc. common stockholders was $654.6 million for 2022, as compared to $405.7 million for the corresponding prior year period. Net loss per share attributable to Guardant Health, Inc. common stockholders was $6.41 for 2022, as compared to $4.00 for the corresponding prior year period. Non-GAAP net loss was $435.4 million for 2022, as compared to $251.7 million for the corresponding prior year period. Non-GAAP net loss per share was $4.26 for 2022, as compared to $2.48 for the corresponding prior year period.

Adjusted EBITDA loss was $403.4 million for 2022, as compared to a $231.5 million loss for the corresponding prior year period.

Cash, cash equivalents and marketable debt securities were $1.0 billion as of December 31, 2022.

Guardant Health expects full year 2023 revenue to be in the range of $525 million to $540 million, representing growth of 17% to 20% compared to full year 2022.

We expect full year 2023 operating expenses to be below full year 2022, and free cash outflow to be approximately $350 million in 2023.

Guardant Health will host a conference call to discuss the fourth quarter and full year 2022 financial results after market close on Thursday, February 23, 2023 at 1:30 pm Pacific Time / 4:30 pm Eastern Time. A webcast of the conference call can be accessed at http://investors.guardanthealth.com. The webcast will be archived and available for replay for at least 90 days after the event.

Guardant Health has presented in this release certain financial information in accordance with U.S. Generally Accepted Accounting Principles (GAAP) and also on a non-GAAP basis, including non-GAAP cost of precision oncology testing, non-GAAP research and development expense, non-GAAP sales and marketing expense, non-GAAP general and administrative expense, non-GAAP loss from operations, non-GAAP net loss, non-GAAP net loss attributable to Guardant Health, Inc., common stockholders, non-GAAP net loss per share attributable to Guardant Health, Inc. common stockholders, basic and diluted, and Adjusted EBITDA.

We define our non-GAAP measures as the applicable GAAP measure adjusted for the impacts of stock-based compensation and related employer payroll tax payments, changes in estimated fair value of noncontrolling interest liability, adjustments relating to redeemable noncontrolling interest, contingent consideration, acquisition related expenses, amortization of intangible assets, fair value adjustments on marketable equity securities, impairment of other assets, and other non-recurring items.

Adjusted EBITDA is defined as net loss attributable to Guardant Health, Inc. common stockholders adjusted for interest income; interest expense; other income (expense), net; provision for income taxes; depreciation and amortization expense; stock-based compensation expense and related employer payroll tax payments; changes in estimated fair value of noncontrolling interest liability; adjustments relating to redeemable noncontrolling interest and contingent consideration; and, if applicable in a reporting period, acquisition-related expenses, and other non-recurring items.

We believe that the exclusion of certain income and expenses in calculating these non-GAAP financial measures can provide a useful measure for investors when comparing our period-to-period core operating results, and when comparing those same results to that published by our peers. We exclude certain other items because we believe that these income (expenses) do not reflect expected future operating expenses. Additionally, certain items are inconsistent in amounts and frequency, making it difficult to perform a meaningful evaluation of our current or past operating performance. We use these non-GAAP financial measures to evaluate ongoing operations, for internal planning and forecasting purposes, and to manage our business.

These non-GAAP financial measures are not intended to be considered in isolation from, as substitute for, or as superior to, the corresponding financial measures prepared in accordance with GAAP. There are limitations inherent in non-GAAP financial measures because they exclude charges and credits that are required to be included in a GAAP presentation, and do not present the full measure of our recorded costs against its revenue. In addition, our definition of the non-GAAP financial measures may differ from non-GAAP measures used by other companies.

Guardant Health is a leading precision oncology company focused on helping conquer cancer globally through use of its proprietary tests, vast data sets and advanced analytics. The Guardant Health oncology platform leverages capabilities to drive commercial adoption, improve patient clinical outcomes and lower healthcare costs across all stages of the cancer care continuum. Guardant Health has commercially launched Guardant360®, Guardant360 CDx, Guardant360 TissueNext™, Guardant360 Response™, and GuardantOMNI® tests for advanced stage cancer patients, and Guardant Reveal™ for early-stage cancer patients. The Guardant Health screening portfolio, including the Shield™ test, aims to address the needs of individuals eligible for cancer screening.

This press release contains forward-looking statements within the meaning of federal securities laws, including statements relating to Guardant Health’s future results, or regarding the potential benefits and advantages of Guardant Health’s platforms, assays and tests, which involve risks and uncertainties that could cause Guardant Health’s actual results to differ materially from the anticipated results and expectations expressed in these forward-looking statements. These statements are based on current expectations, forecasts and assumptions, and actual outcomes and results could differ materially from these statements due to a number of factors. These and additional risks and uncertainties that could affect Guardant Health’s financial and operating results and cause actual results to differ materially from those indicated by the forward-looking statements made in this press release include those discussed under the captions “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operation” and elsewhere in its Annual Report on Form 10-K for the year ended December 31, 2022, and any current and periodic reports filed with or furnished to the Securities and Exchange Commission thereafter. The forward-looking statements in this press release are based on information available to Guardant Health as of the date hereof, and Guardant Health disclaims any obligation to update any forward-looking statements provided to reflect any change in its expectations or any change in events, conditions, or circumstances on which any such statement is based, except as required by law. These forward-looking statements should not be relied upon as representing Guardant Health’s views as of any date subsequent to the date of this press release.

investors@guardanthealth.com

press@guardanthealth.com

Reconciliation of GAAP Net Loss Attributable to Guardant Health, Inc. Common Stockholders
to Adjusted EBITDA