You should read the following discussion and analysis of our financial condition
and results of operations together with the unaudited condensed consolidated
financial statements and related notes included elsewhere in this Quarterly
Report on Form 10-Q. This discussion and other parts of this Quarterly Report on
Form 10-Q contain forward-looking statements that involve risk and
uncertainties, such as statements of our plans, objectives, beliefs,
expectations and intentions. Our actual results could differ materially from
those discussed in these forward-looking statements. Factors that could cause or
contribute to such differences include, but are not limited to, those discussed
in Part I, Item 1A, "Risk Factors," of our Annual Report on Form 10-K for the
year ended December 31, 2019 and in Part II, Item 1A, "Risk Factors" of our
Quarterly Report on Form 10-Q for the period ended March 31, 2020.

Overview


We are a leading precision oncology company focused on helping conquer cancer
globally through use of our proprietary blood tests, vast data sets and advanced
analytics. We believe that the key to conquering cancer is unprecedented access
to its molecular information throughout all stages of the disease, which we
intend to enable by a routine blood draw, or liquid biopsy. Our Guardant Health
Oncology Platform is designed to leverage our capabilities in technology,
clinical development, regulatory and reimbursement to drive commercial adoption,
accelerate drug development, improve patient clinical outcomes and lower
healthcare costs. In pursuit of our goal to manage cancer across all stages of
the disease, we launched our Guardant360 and GuardantOMNI liquid biopsy-based
tests for advanced stage cancer. Our Guardant360 test, launched in 2014, has
been used by more than 7,000 oncologists, over 50 biopharmaceutical companies
and all 28 National Comprehensive Cancer Network, or NCCN, Centers. More than
150,000 Guardant360 tests have been performed to date. Using data collected from
our Guardant360 tests, we have also developed our GuardantINFORM platform to
further accelerate precision oncology drug development by biopharmaceutical
companies by offering them an in-silico research platform to further unlock
insights into tumor evolution and treatment resistance across various
biomarker-driven cancers. Our GuardantOMNI test, launched in 2017, has been used
by our biopharmaceutical customers as a comprehensive genomic profiling tool to
help accelerate clinical development programs in both immuno-oncology and
targeted therapy.
Our Guardant360 and GuardantOMNI tests fuel development of our LUNAR program.
Our LUNAR-1 assay is intended to address identification of those who are likely
to benefit from adjuvant treatment, detection of minimal residual disease in the
blood of cancer patients after surgery, and surveillance of patients who have
completed curative cancer treatment to potentially detect recurrence at an
earlier stage, and was launched in 2018 for research use and in late 2019 for
investigational use. To help demonstrate the utility of our LUNAR-1 assay, we
have initiated multiple clinical trials to evaluate recurrence-free survival in
patients who receive ctDNA-directed therapy as compared to the current
standard-of-care active surveillance. We are developing our LUNAR-2 assay to
address early cancer detection in screening eligible asymptomatic individuals
and higher risk individuals. Recent data reported at the 2019 National
Colorectal Cancer Roundtable shows that although the percentage of U.S. adults
who are up to date with recommended colorectal cancer screening has gradually
increased from approximately 65% in 2012 to approximately 69% in 2018, this
falls short of the 80% screening compliance goal set by the Centers for Disease
Control and Prevention. Our LUNAR-2 assay recently demonstrated an average
sensitivity of approximately 90%, with specificity of approximately 97%, in a
case-control cohort of 113 recently diagnosed patients with stages I, II or III
colorectal cancer and 88 colonoscopy-screened negative controls. Recent data
reported at the 2020 American Society of Clinical Oncology (ASCO) Annual Meeting
shows improved performance of the LUNAR-2 assay to detect early-stage colorectal
cancer in average-risk adults. In a blinded cohort analysis of colonoscopy
screened negative patients (n=88) and patients newly diagnosed with early stage
colorectal cancer (n=113) using a further optimized, integrated genomic and
epigenomic analysis, the LUNAR-2 assay demonstrated overall sensitivity of 90.3%
and overall specificity of 96.6%. Recent data presented at the 2020 American
Association for Cancer Research (AACR) Virtual Annual Meeting shows that the
LUNAR-2 assay achieved 90% sensitivity and 94% specificity in detecting
early-stage colorectal cancer. When restricting analysis of the controls to
those who were negative for colorectal cancer by colonoscopy (n=74), the LUNAR-2
assay demonstrated improved specificity (99%) with no reduction in sensitivity.
Our GuardantOMNI test has a broader 500-gene panel, including genes associated
with homologous recombination repair deficiency and biomarkers for
immuno-oncology applications, such as tumor mutational burden and microsatellite
instability, and has achieved comparable analytical performance in clinical
studies, including for translational science applications in collaboration with
several biopharmaceutical companies, including AstraZeneca, Bristol-Myers
Squibb, Merck MSD, Merck KGaA of Darmstadt, Germany and Pfizer.

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Our Guardant360 and GuardantOMNI tests have each been designated by the FDA as a
breakthrough device for use as a companion diagnostic in connection with certain
specified therapeutic products of our biopharmaceutical customers. Among other
things, designation as a breakthrough device provides for priority review by the
FDA and more interactive communication with the FDA during the development
process. Our Guardant360 and GuardantOMNI tests are both being developed as
companion diagnostics under collaborations with biopharmaceutical companies,
including AstraZeneca, Amgen, Janssen Biotech and Radius Health.

We perform our Guardant360, GuardantOMNI and other tests in our clinical
laboratory located in Redwood City, California. Our laboratory is certified
pursuant to the Clinical Laboratory Improvement Amendments of 1988, or CLIA,
accredited by the College of American Pathologists, or CAP, permitted by the New
York State Department of Health, or NYSDOH, and licensed in California and four
other states.

The analytical and clinical data that we have generated in our efforts to
establish clinical utility, combined with the support we have developed with key
opinion leaders, or KOLs, in the oncology space have led to positive coverage
decisions by a number of commercial payers. Our Guardant360 test is currently
covered by Cigna, Priority Health, multiple Blue Cross Blue Shield plans as well
as the health plans associated with eviCore, which have adopted policies that
specifically cover Guardant360 test for non-small cell lung cancer, or NSCLC,
which we believe gives us a competitive advantage with these payers.

In July 2018, Palmetto GBA, or Palmetto, the Medicare Administrative Contractor,
or MAC, responsible for administering Medicare's Molecular Diagnostic Services
Program, or MolDx, issued a local coverage determination, or LCD, for our
Guardant360 test for qualifying NSCLC patients. Subsequently in 2018, Noridian
Healthcare Solutions, or Noridian, a participant in MolDx and the MAC
responsible for adjudicating claims in California, where our laboratory is
located, also finalized its LCD for our Guardant360 test. Pursuant to this
Noridian LCD, in September 2018, we began to submit claims for reimbursement for
Guardant360 clinical testing performed for NSCLC patients covered under the LCD,
and in October 2018, we began to receive payments for these services from
Medicare.

In December 2019, Palmetto finalized its expanded LCD for our Guardant360 test
to provide limited Medicare coverage for use of Guardant360 for qualifying
patients diagnosed with solid tumor cancers of non-central nervous system
origin. In May 2019, Noridian also issued an expanded draft LCD for our
Guardant360 test consistent with the expanded draft LCD issued by Palmetto in
March 2019. In May 2020, Noridian issued a coverage article and confirmed
limited Medicare coverage for our Guardant360 test for qualifying patients
diagnosed with solid tumor cancers of non-central nervous system origin.
Noridian also retired the expanded draft LCD issued in May 2019 as being
superseded by the coverage article. We estimate that approximately 85% of
Medicare patients are covered under the coverage article issued by Noridian in
May 2020.
Certain commercial insurance payors have issued decisions to cover the use of
Guardant360 for patients with NSCLC. For the three months ended June 30, 2020
and 2019, respectively, approximately 42% and 46% of our U.S. clinical
tests were for patients tested for NSCLC, and for the six months ended June 30,
2020 and 2019, respectively, approximately 43% and 46% of our U.S. clinical
tests were for patients tested for NSCLC.

In the United States, we market our tests to clinical customers through our
sales organization, which is engaged in sales efforts and promotional activities
primarily targeting oncologists and cancer centers. Outside the United States,
we market our tests to clinical customers through distributors and direct
contracts with healthcare institutions. We also market our tests to
biopharmaceutical customers globally through our business development team,
which promotes the broad utility of our tests throughout drug development and
commercialization. Additionally, we have established a joint venture with
SoftBank to accelerate commercialization of our products including in Asia, the
Middle East and Africa, with our initial focus being on Japan. Our products are
currently marketed in approximately 40 countries.
The recent global outbreak of coronavirus 2019, or COVID-19, has disrupted, and
we expect will continue to disrupt, our operations. To protect the health and
well-being of our workforce, partners, vendors and customers, we have provided
free COVID-19 testing for employees working on-site, implemented social distance
and building entry policies at work, restricted travel and facility visits, and
followed California's "shelter in place" public health orders and the guidance
from the Centers for Disease Control and Prevention. Employees who can perform
their duties remotely are asked to work from home and those on site are asked to
follow our social distance guidelines. Our sales, marketing and business
development efforts are also constrained by our operational response to the
COVID-19 pandemic. We expect to continue to adjust our operational norms in an
effort to help slow the spread of
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COVID-19 in the coming months, including complying with government directives
and guidelines as they are modified and supplemented.
The COVID-19 global pandemic also has started to negatively affect, and we
expect will continue to negatively affect, our revenue and our clinical studies.
For example, cancer patients may have more limited access to hospitals,
healthcare providers and medical resources as they take steps to control the
spread of COVID-19. Our biopharmaceutical customers are facing challenges in
recruiting patients and in conducting clinical trials to advance their
pipelines, for which our tests could be utilized. As a result of the COVID-19
pandemic, beginning in the latter half of March 2020, we have been receiving
fewer samples for testing on a daily average basis from our clinical and
biopharmaceutical customers than before the outbreak of the COVID-19 pandemic.
Further, our clinical studies, especially those such as our ECLIPSE trial and
the COBRA study that are deemed as preventive care or are not part of a standard
of care, as well as our development services arrangements with our
biopharmaceutical customers, are expected to take longer to complete, if at all,
than what we expected before the outbreak of the COVID-19 pandemic.

The limited availability of broad-based COVID-19 diagnostic testing has hindered
recovery efforts to date. As a result, in early April 2020 we initiated a
feasibility assessment that has included our research and development team
working to determine our ability to bring a new COVID-19 test to market
utilizing our current laboratory facilities, as well as our outreach to
potential public and private partners for their assistance in operationalizing
such test. As part of the initial progress of this assessment, in June 2020 we
submitted an Emergency Use Authorization (EUA) package to the FDA for our
nasopharyngeal Guardant-19 SARS-CoV-2 test, or Guardant-19 test. We launched the
Guardant-19 test as a CLIA-certified test operating under the FDA's emergency
use authorization to test our employees and made it available to a limited
number of third parties for testing. However, we cannot predict the extent to
which the Guardant-19 test will be used by third parties and have not yet
determined the scale and financial elements of this program.
The ultimate impact of the COVID-19 pandemic on our business and financial
condition will depend on many factors, including the duration of the outbreak
and the mitigation requirements affecting our operations, and healthcare
delivery and society in general. As a result, we expect our revenue and results
of operations to be adversely affected until testing, treatments and vaccines
substantially eliminate the impact of the COVID-19 pandemic.

We generated total revenue of $66.3 million and $54.0 million for the three
months ended June 30, 2020 and 2019, respectively, and $133.8 million and $90.6
million for the six months ended June 30, 2020 and 2019, respectively. We also
incurred net losses of $49.7 million and $11.3 million for the three months
ended June 30, 2020 and 2019, respectively, and $81.6 million and $32.7 million
for the six months ended June 30, 2020 and 2019, respectively. We have funded
our operations to date principally from the sale of our stock and revenue from
our precision oncology testing and development services. In June 2020, we
completed an underwritten public offering, where we sold 4,312,500 shares of our
common stock at a price of $84.00 per share and received net proceeds of
approximately $354.6 million after deducting underwriting discounts, commissions
and offering expenses payable by us. As of June 30, 2020, we had cash, cash
equivalents and marketable securities of $1.1 billion.
Factors affecting our performance
We believe there are several important factors that have impacted and that we
expect will impact our operating performance and results of operations,
including:
•Testing volume, pricing and customer mix. Our revenue and costs are affected by
the volume of testing and mix of customers from period to period. We evaluate
both the volume of tests that we perform for patients on behalf of clinicians
and the number of tests we perform for biopharmaceutical companies. Our
performance depends on our ability to retain and broaden adoption with existing
customers, as well as attract new customers. We believe that the test volume we
receive from clinicians and biopharmaceutical companies are indicators of growth
in each of these customer verticals. Customer mix for our tests has the
potential to significantly affect our results of operations, as the average
selling price for biopharmaceutical sample testing is currently higher than our
average selling price for clinical tests because we are not a contracted
provider for, or our tests are not covered by clinical patients' insurance for,
the majority of the tests that we perform for patients on behalf of clinicians.
Approximately 37% and 38% of our U.S. clinical tests for the three months ended
June 30, 2020 and 2019, respectively, and approximately 37% and 38% of our U.S.
clinical tests for the six months ended June 30, 2020 and 2019, respectively,
were for Medicare beneficiaries.
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•Regulatory approval. Our Guardant360 test was the first comprehensive liquid
biopsy test approved by NYSDOH. In addition, we believe our facility was the
first comprehensive liquid biopsy laboratory to be CLIA-certified,
CAP-accredited and NYSDOH-permitted. In the fourth quarter of 2019, we submitted
a premarket approval, or PMA, application to seek the FDA's approval of our
Guardant360 test to be used as a companion diagnostic, initially in connection
with one therapeutic product of a biopharmaceutical customer, and to provide
tumor mutation profiling for cancer patients with solid tumors. In February
2020, we submitted an additional module of the PMA application for our
Guardant360 test to the FDA. Medicare's National Coverage Determination for Next
Generation Sequencing established in 2018 and subsequently updated in 2020
provides coverage for molecular diagnostic tests such as our Guardant360 test,
if, among other criteria, such tests are offered within their FDA-approved
companion diagnostic labeling. We believe that this establishes a competitive
advantage for tests receiving FDA approval and that FDA approval will be
increasingly necessary for diagnostic tests to gain adoption, both in the United
States and abroad. We believe FDA approval, if obtained, will help increase
adoption of our tests and facilitate favorable reimbursement decisions by
Medicare and commercial payers. We also intend to pursue regulatory approvals in
specific markets outside of the United States, including in Europe, Japan and
China. Any negative regulatory decisions or changes in regulatory requirements
affecting our business could adversely impact our operations and financial
results.

•Payer coverage and reimbursement. Our revenue depends on achieving broad
coverage and reimbursement for our tests from third-party payers, including both
commercial and government payers. Payment from commercial payers can vary
depending on whether we have entered into a contract with the payers as a
"participating provider" or do not have a contract and are considered a
"non-participating provider." Payers often reimburse non-participating
providers, if at all, at a lower amount than participating providers. We have
received a substantial portion of our revenue from a limited number of
commercial payers, most of which have not contracted with us to be a
participating provider. We have received reimbursement for tests of patients
with a variety of cancers, though for amounts that on average are significantly
lower than for participating providers. We have experienced situations where
commercial payers proactively reduced the amounts they were willing to reimburse
for our tests, and in other situations, commercial payers have determined that
the amounts they previously paid were too high and have sought to recover those
perceived excess payments by deducting such amounts from payments otherwise
being made. When we contract with a payer to serve as a participating provider,
reimbursements by the payer are generally made pursuant to a negotiated fee
schedule and are limited to only covered indications or where prior approval has
been obtained. Becoming a participating provider can result in higher
reimbursement amounts for covered uses of our test and, potentially, no
reimbursement for non-covered uses identified under the payer's policies or the
contract. As a result, the potential for more favorable reimbursement associated
with becoming a participating provider may be offset by a potential loss of
reimbursement for non-covered uses of our tests. Current Procedural Terminology,
or CPT, coding plays a significant role in how our Guardant360 test is
reimbursed both from commercial and governmental payers. Changes to the codes
used to report the Guardant360 test to payers may result in significant changes
in its reimbursement. If our Guardant360 test receives approval from the FDA, we
may be required to obtain a new code to report the Guardant360 test on claims
submitted to U.S. payers. If a coding change were to occur, payments for certain
uses of the Guardant360 test could be reduced or eliminated by such payers.
Cigna, Priority Health, multiple Blue Cross Blue Shield plans as well as the
health plans associated with eviCore adopted policies that cover our Guardant360
test for the majority of NSCLC patients we test. If their policies were to
change in the future to cover additional cancer indications, we anticipate that
our total reimbursement would increase. In September 2018, we began to submit
claims to Medicare for reimbursement with respect to Guardant360 clinical tests
performed for NSCLC patients covered under the 2018 Noridian LCD, and in October
2018, we began to receive payments from Medicare for these clinical tests. In
March 2020, we began to receive reimbursement from Medicare for claims
submitted, with respect to Guardant360 clinical tests performed for qualifying
patients diagnosed with solid tumor cancers of non-central nervous system origin
other than NSCLC. In May 2020, Noridian issued a coverage article and confirmed
limited Medicare coverage for our Guardant360 test for qualifying patients
diagnosed with solid tumor cancers of non-central nervous system origin who meet
the criteria of Medicare's National Coverage Determination for Next Generation
Sequencing established in March 2018. Noridian also retired the draft LCD issued
in May 2019 as being superseded by the coverage article. Future actions taken by
Noridian or Palmetto may change Medicare coverage for our Guardant360 test. We
estimate total coverage in the United States for the Guardant360 test to be more
than 180 million lives, including Medicare beneficiaries and members of several
commercial health plans. If we fail to obtain or maintain coverage and adequate
reimbursement from third-party payers, including from Medicare, we may be unable
to increase our testing volume and revenue as expected. Retrospective
reimbursement adjustments, such as deductions from further payments
and clawbacks, can also negatively impact our revenue and cause our financial
results to fluctuate. Due to the inherent variability of the insurance
landscape, historic
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success of, and payments from, appeals of reimbursement denials by payers are
not indicative of future success of and payments from such appeals.
•Biopharmaceutical customers. Our revenue also depends on our ability to attract
new, and to maintain and expand relationships with existing, biopharmaceutical
customers, and we expect to increase our sales and marketing expense in
furtherance of this goal. As we continue to develop these relationships, we
expect to support a growing number of clinical trials both in the United States
and internationally. If our relationships expand with biopharmaceutical
customers, we believe we may continue to have opportunities to offer our
platform to such customers for companion diagnostic development, novel target
discovery and validation as well as clinical trial enrollment, and to grow into
other business opportunities. For example, we believe that our genomic data, in
combination with clinical outcomes or claims data, has revenue-generating
potential, supporting novel drug development and companion diagnostic
development.
•Research and development. A significant aspect of our business is our
investment in research and development, including the development of new
products, such as those being developed as part of our LUNAR program. In
particular, we have invested heavily in clinical studies, including more than 50
clinical outcomes studies, the largest-ever liquid-to-tissue concordance study,
and a prospective interventional clinical utility study demonstrating clinical
overall response rates in line with tissue biopsy approaches. Our clinical
research has resulted in over 150 peer-reviewed publications. With respect to
our LUNAR program, we initiated a prospective screening study, which we refer to
as the ECLIPSE trial, aiming to recruit approximately 10,000 patients and
evaluate the performance of our LUNAR-2 assay in detecting colorectal cancer in
average-risk adults, and in collaboration with a National Clinical Trials
Network group, initiated a prospective multi-center randomized controlled trial,
which we refer to as the COBRA study, in approximately 1,400 patients with
resected stage II colon cancer to use our LUNAR-1 assay to evaluate
recurrence-free survival in patients who receive ctDNA-directed therapy as
compared to the current standard-of-care active surveillance. Furthermore, we
are collaborating with investigators from multiple academic cancer centers,
including MD Anderson Cancer Center, the University of Colorado, Memorial Sloan
Kettering Cancer Center, Massachusetts General Cancer Center, Wake Forest Cancer
Center and the University of California San Francisco, as well as several
international institutions. The COVID-19 global pandemic has negatively
impacted, and is expected to continue to negatively impact, the recruitment for
clinical studies, especially those that are deemed as preventive care or are not
part of a standard of care, including the ECLIPSE trial and the COBRA study. We
believe these studies are critical to gaining physician adoption and driving
favorable coverage decisions by payers, and expect our investments in clinical
studies to increase. We expect to increase our research and development expense
with the goal of fueling further innovation.
•International expansion. A component of our long-term growth strategy is to
expand our commercial footprint internationally, and we expect to increase our
sales and marketing expense to execute on this strategy. We currently offer our
tests in countries outside the United States primarily through distributor
relationships or direct contracts with hospitals. In May 2018, we formed and
capitalized a joint venture, Guardant Health AMEA, Inc., which we refer to as
the Joint Venture, with SoftBank, relating to the sale, marketing and
distribution of our tests generally outside the Americas and Europe. We expect
to rely on the Joint Venture to accelerate commercialization of our products in
Asia, the Middle East and Africa, with our initial focus being on Japan. That
effort could be negatively impacted by the COVID-19 global pandemic.
•General and administrative expense. Our financial results have historically,
and will likely continue to, fluctuate significantly based upon the impact of
our general and administrative expense, and in particular, our stock-based
compensation expense. For example, in May 2020, our Board of Directors approved
the grant of a long-term market-based restricted stock unit award to our Chief
Executive Officer and our President and Chief Operating Officer (the
"Founders"). The Founders each received a grant of 1,695,574 market-based
restricted stock units which consist of three separate tranches and the vesting
of each tranche is subject to the closing price of our common stock closing
price being maintained at or above a pre-determined stock price goal for a
period of 30 consecutive calendar days any time during the seven-year
performance period. Our equity awards, including the Founders' market-based
restricted stock units, are intended to retain and incentivize employees to lead
us to sustained, long-term superior financial and operational performance. The
market-based restricted stock units, in particular, were designed to focus the
Founders on our long-term operational and strategic development, including the
successful development and commercialization of our LUNAR program.
While each of these areas presents significant opportunities for us, they also
pose significant risks and challenges that we must address. See Part I, Item
1A, "Risk Factors" of our Annual Report on Form 10-K for the year ended
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December 31, 2019, and Part II, Item 1A, "Risk Factors" of our Quarterly Report
on Form 10-Q for the period ended March 31, 2020, for more information.
Non-GAAP Financial Measure
Adjusted Earnings Before Interest, Taxes, Depreciation and Amortization
("Adjusted EBITDA"), a non-GAAP financial measure is a key metric to assess
period-to-period comparison in evaluating the performance of our core business
by removing the impact of income (expenses) attributable to material non-cash
items, specifically stock-based compensation and fair value remeasurements due
to the subjectivity, management judgment, and market fluctuations involved
around these amounts. 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.
"Adjusted EBITDA" is defined by us as net loss attributable to Guardant Health,
Inc. common stockholders before: (i) interest income, (ii) interest expense,
(iii) provision for (benefit from) income taxes, (iv) depreciation and
amortization expense, (v) other (income) expense, net, (vi) stock-based
compensation expense, (vii) Adjustments relating to non-controlling interest and
contingent consideration and, if applicable in a reporting period, and (viii)
acquisition-related expenses, and other non-recurring items.
Our use of Adjusted EBITDA as a non-GAAP financial measure is not intended to be
considered in isolation from, as substitute for, or as superior to, the
corresponding financial measure prepared in accordance with GAAP and you should
not consider it in isolation or substitute for analysis of our results reported
under 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 non-GAAP financial measures
may differ from non-GAAP measures used by other companies.
The following table reconciles net loss attributable to Guardant Health, Inc.
common stockholders (which is the most directly comparable GAAP operating
financial measure) to Adjusted EBITDA.
                                                 Three Months Ended June 30,                               Six Months Ended June
                                                                                                                    30,
                                                   2020                  2019               2020                 2019

Net loss attributable to Guardant Health,
Inc. common stockholders                     $     (54,639)          $ (11,600)         $ (82,368)         $   (37,651)
Adjustments:
Interest income                                     (2,640)             (3,099)            (5,958)              (5,584)
Interest expense                                        10                 287                 22                  580
Other (income) expense, net                         (2,285)                 51             (2,076)                 (96)
Provision for (benefit from) income taxes               34              (1,207)                48               (1,181)
Depreciation and amortization                        3,805               2,657              7,109                5,011
Stock-based compensation expense                    25,815               3,215             32,153                6,398
Adjustments relating to noncontrolling
interest and contingent consideration                4,900                 300                610                5,000
Acquisition related expenses (1)                         -                 422              9,707                  422

Adjusted EBITDA (non-GAAP)                   $     (25,000)          $  (8,974)         $ (40,753)         $   (27,101)


(1) For the six months ended June 30, 2020, acquisition related expenses consist
of a dispute settlement expense of $1.2 million and IPR&D technology write off
for $8.5 million incurred for the three months ended March 31, 2020 in
connection with a settlement and a license purchase agreement. For the three and
six months ended June 30, 2019, acquisition related expenses of $0.4 million
primarily include certain diligence, accounting, and legal expenses incurred
related to our Bellwether acquisition.


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Components of results of operations

Revenue


We derive our revenue from two sources: (i) precision oncology testing and (ii)
development services.
Precision oncology testing. Precision oncology testing revenue is generated from
sales of our Guardant360 and GuardantOMNI tests to clinical and
biopharmaceutical customers. In the United States, through June 30, 2020, we
generally performed tests as an out-of-network service provider without
contracts with health insurance companies. We submit claims for payment for
tests performed for patients covered by U.S. private payers. We submit claims to
Medicare for reimbursement for Guardant360 clinical testing performed for
qualifying patients diagnosed with solid tumor cancers of non-central nervous
system origin who meet the criteria of Medicare's National Coverage
Determination for Next Generation Sequencing established in March 2018. Tests
for patients covered by Medicare represented approximately 37% and 38% of U.S.
tests performed during the three months ended June 30, 2020 and 2019,
respectively, and 37% and 38% of U.S. tests performed during the six months
ended June 30, 2020 and 2019, respectively. We also provide precision oncology
testing to biopharmaceutical customers under contracts for which all recognition
criteria are met, and we have recognized revenue on an accrual basis for those
services.
Development services. Development services revenue represents services, other
than precision oncology testing, that we provide to biopharmaceutical companies
and large medical institutions. It includes companion diagnostic development and
regulatory approval services, clinical trial referrals and liquid biopsy testing
development and support. We collaborate with biopharmaceutical companies in the
development and clinical trials of new drugs. As part of these collaborations,
we provide services related to regulatory filings with the FDA to support
companion diagnostic device submissions for our liquid biopsy panels. Under
these arrangements, we generate revenue from progression of our collaboration
efforts, as well as from provision of on-going support. Development services
revenue can vary over time as different projects start and complete.
Costs and operating expenses
Cost of precision oncology testing. Cost of precision oncology testing generally
consists of cost of materials, direct labor, including bonus, benefit and
stock-based compensation; equipment and infrastructure expenses associated with
processing liquid biopsy test samples, including sample accessioning, library
preparation, sequencing, quality control analyses and shipping charges to
transport blood samples; freight; curation of test results for physicians; and
license fees due to third parties. Infrastructure expenses include depreciation
of laboratory equipment, rent costs, amortization of leasehold improvements and
information technology costs. Costs associated with performing our tests are
recorded as the tests are performed regardless of whether revenue was recognized
with respect to the tests. Royalties for licensed technology are calculated as a
percentage of revenues generated using the associated technology and recorded as
expense at the time the related revenue is recognized. One-time royalty payments
related to signing of license agreements or other milestones, such as issuance
of new patents, are amortized to expense over the expected useful life of the
patents. While we do not believe the technologies underlying these licenses are
necessary to permit us to provide our tests, we do believe these technologies
are potentially valuable and of possible strategic importance to us or our
competitors.
We expect the cost of precision oncology testing to generally increase in line
with the increase in the number of tests we perform, but the cost per test to
decrease modestly over time due to the efficiencies we may gain as test volume
increases, and from automation and other cost reductions.
Cost of development services. Cost of development services includes costs
incurred for the performance of development services requested by our customers.
For development of new products, costs incurred before technological feasibility
has been achieved are reported as research and development expenses, while costs
incurred thereafter are reported as cost of revenue. Cost of development
services will vary depending on the nature, timing and scope of customer
projects.
Research and development expense. Research and development expenses consist of
costs incurred to develop technology and include salaries and benefits including
stock-based compensation, reagents and supplies used in research and development
laboratory work, infrastructure expenses, including allocated facility occupancy
and information technology costs, contract services, other outside costs and
costs to develop our technology capabilities. Research and development expenses
also include costs related to activities performed under contracts with
biopharmaceutical companies before technological feasibility has been achieved.
Research and development costs are expensed as incurred. Payments made prior to
the receipt of goods or services to be used in research and development are
deferred and recognized as expense in the period in which the related goods are
received or
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services are rendered. Costs to develop our technology capabilities are recorded
as research and development unless they meet the criteria to be capitalized as
internal-use software costs.
We expect that our research and development expenses will continue to increase
in absolute dollars as we continue to innovate and develop additional products,
expand our genomic and medical data management resources and conduct our ongoing
and new clinical trials with a particular focus on our LUNAR program.
Sales and marketing expense. Our sales and marketing expenses are expensed as
incurred and include costs associated with our sales organization, including our
direct sales force and sales management, client services, marketing and
reimbursement, medical affairs, as well as business development personnel who
are focused on our biopharmaceutical customers. These expenses consist primarily
of salaries, commissions, bonuses, employee benefits, travel expenses and
stock-based compensation, as well as marketing and educational activities and
allocated overhead expenses.
We expect our sales and marketing expenses to increase in absolute dollars as we
expand our sales force, increase our presence within and outside of the United
States, and increase our marketing activities to drive further awareness and
adoption of our Guardant360 and GuardantOMNI tests.
General and administrative expense. Our general and administrative expenses
include costs for our executive, accounting and finance, legal and human
resources functions. These expenses consist principally of salaries, bonuses,
employee benefits, travel expenses and stock-based compensation, as well as
professional services fees such as consulting, audit, tax and legal fees, and
general corporate costs and allocated overhead expenses.
We expect that our general and administrative expenses will continue to increase
in absolute dollars, primarily due to increased stock-based compensation
expense, including resulting from the market-based restricted stock units
granted to our Founders in May 2020, increased headcount and increased costs
associated with operating as a growing public company, including expenses
related to legal, accounting, regulatory, maintaining compliance with exchange
listing and requirements of the SEC, director and officer insurance premiums and
investor relations. These expenses, though expected to increase in absolute
dollars, are expected to decrease modestly as a percentage of revenue in the
long term, though they may fluctuate as a percentage of revenue from period to
period due to the timing and extent of these expenses being incurred.

Interest income
Interest income consists of interest earned on our cash, cash equivalents and
marketable securities.
Interest expense
Interest expense consists primarily of interest from finance leases or capital
leases and royalty obligations.
Other income (expense), net
Other income (expense), net consists of foreign currency exchange gains and
losses and the relief fund grant from the Department of Health and Human
Services, or HHS, under the U.S. Coronavirus Aid, Relief, and Economic Security
Act, or the CARES Act. We expect our foreign currency gains and losses to
continue to fluctuate in the future due to changes in foreign currency exchange
rates.
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Results of operations The following table set forth the significant components of our results of operations for the periods presented.


                                                       Three Months Ended                                     Six Months Ended
                                                            June 30,                                              June 30,
                                                     2020               2019               2020                  2019

                                                                                 (unaudited)
                                                                               (in thousands)
Revenue:
Precision oncology testing                       $  50,991          $  42,064          $ 111,237          $        70,901
Development services                                15,344             11,911             22,608                   19,729
Total revenue                                       66,335             53,975            133,845                   90,630
Costs and operating expenses:
Cost of precision oncology testing(1)               17,809             14,650             36,000                   25,673
Cost of development services                         4,626              2,183              6,941                    4,695
Research and development expense(1)                 36,319             19,532             73,335                   35,848
Sales and marketing expense(1)                      25,015             19,439             50,130                   37,246
General and administrative expense(1)               37,186             13,439             56,971                   26,100
Total costs and operating expenses                 120,955             69,243            223,377                  129,562
Loss from operations                               (54,620)           (15,268)           (89,532)                 (38,932)
Interest income                                      2,640              3,099              5,958                    5,584
Interest expense                                       (10)              (287)               (22)                    (580)
Other income (expense), net                          2,285                (51)             2,076                       96
Loss before provision for income taxes             (49,705)           (12,507)           (81,520)                 (33,832)
Provision for (benefit from) income taxes               34             (1,207)                48                   (1,181)
Net loss                                         $ (49,739)         $ (11,300)         $ (81,568)         $       (32,651)

(1)Amounts include stock-based compensation expense as follows:


                                                                                                               Six Months Ended June
                                                     Three Months Ended June 30,                                        30,
                                                        2020                 2019              2020                 2019

                                                                                  (unaudited)
                                                                                 (in thousands)
Cost of precision oncology testing               $          407           $    126          $    710          $       296
Research and development expense                          2,622              1,428             4,986                2,638
Sales and marketing expense                               2,167                646             3,965                1,472
General and administrative expense                       20,619              1,015            22,492                1,992
Total stock-based compensation expense           $       25,815           $  3,215          $ 32,153          $     6,398



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Comparison of the Three Months Ended June 30, 2020 and 2019
Revenue
                                     Three Months Ended June 30,                              Change
                                    2020                       2019             $            %

                                             (unaudited)
                                                   (in thousands)
Precision oncology testing    $      50,991                 $ 42,064       $  8,927          21  %
Development services                 15,344                   11,911          3,433          29  %
Total revenue                 $      66,335                 $ 53,975       $ 12,360          23  %


Total revenue was $66.3 million for the three months ended June 30, 2020
compared to $54.0 million for the three months ended June 30, 2019, an increase
of $12.4 million, or 23%.
Precision oncology testing revenue increased to $51.0 million for the three
months ended June 30, 2020 from $42.1 million for the three months ended June
30, 2019, an increase of $8.9 million, or 21%. This increase in precision
oncology testing revenue was primarily due to an increase in average selling
price per test as a result of expanded coverage of our tests for clinical
customers, plus $2.6 million in revenue received during the three months ended
June 30, 2020 from Medicare for samples processed in 2019 up from $1.4 million
in revenue received during the three months ended June 30, 2019 from Medicare
for samples processed in 2018. Precision oncology revenue from tests for
clinical customers was $39.6 million in the three months ended June 30, 2020 and
$21.8 million in the three months ended June 30, 2019, respectively. Tests for
clinical customers increased to 13,694 for the three months ended June 30, 2020
from 11,875 for the three months ended June 30, 2019 mainly due to an increase
in the number of physicians ordering Guardant360 tests. In March 2020, we began
to receive reimbursement from Medicare for claims submitted with respect to
Guardant360 clinical tests performed for qualifying patients diagnosed with
solid tumor cancers of non-central nervous system origin other than NSCLC. In
May 2020, Noridian issued a coverage article and confirmed limited Medicare
coverage for our Guardant360 test for qualifying patients diagnosed with solid
tumor cancers of non-central nervous system origin who meet the criteria of
Medicare's National Coverage Determination for Next Generation Sequencing
established in March 2018.
Precision oncology revenue from tests for biopharmaceutical customers was $11.4
million in the three months ended June 30, 2020 and $20.2 million in the three
months ended June 30, 2019, respectively. Tests for biopharmaceutical customers
decreased to 2,805 for the three months ended June 30, 2020 from 5,285 for the
three months ended June 30, 2019 primarily due to the timing and progression of
clinical trials and studies which resulted in fluctuation in the number of
samples received for testing. The average selling price of biopharmaceutical
tests was $4,054 for the three months ended June 30, 2020, up from $3,827 for
the three months ended June 30, 2019 due to a greater proportion of such tests
being the GuardantOMNI test, which has a higher selling price than the
Guardant360 test. As a result of the COVID-19 pandemic, beginning in the latter
half of March 2020, we began receiving fewer samples for testing on a daily
average basis from our clinical and biopharmaceutical customers than before the
outbreak of the COVID-19 pandemic. Our future sample volumes and precision
oncology revenue may be adversely impacted by the COVID-19 pandemic depending on
the duration and severity of the pandemic.
Development services revenue increased to $15.3 million for the three months
ended June 30, 2020 from $11.9 million for the three months ended June 30, 2019,
an increase of $3.4 million, or 29%. This increase in development services
revenue was due to new collaboration projects from biopharmaceutical customers
for companion diagnostic development and regulatory approval services during the
three months ended June 30, 2020. Our development services arrangements with
biopharmaceutical customers and development services revenue may be adversely
impacted by the COVID-19 pandemic in future periods.
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Costs and operating expenses
Cost of revenue
                         Three Months Ended June 30,                             Change
                        2020                       2019            $            %

                                 (unaudited)
                                      (in thousands)
Cost of revenue   $      22,435                 $ 16,833       $ 5,602          33  %
Gross profit      $      43,900                 $ 37,142
Gross margin                 66   %                   69  %


Cost of revenue was $22.4 million for the three months ended June 30, 2020
compared to $16.8 million for the three months ended June 30, 2019, an increase
of $5.6 million, or 33%.
Cost of precision oncology testing revenue was $17.8 million for the three
months ended June 30, 2020 compared to $14.7 million for the three months ended
June 30, 2019, an increase of $3.2 million, or 22%. This increase in cost of
precision oncology testing was attributable to an increase in sample volumes and
was primarily due to a $3.2 million increase in production labor and overhead
costs.
Cost of development services was $4.6 million for the three months ended June
30, 2020 compared to $2.2 million for the three months ended June 30, 2019, an
increase of $2.4 million, or 112%. This increase in cost of development services
was primarily due to an increase in material and labor costs related to
companion diagnostic development and regulatory approval service contracts.
Gross margin for the three months ended June 30, 2020 was 66% compared to 69%
for the three months ended June 30, 2019. The decrease in gross margin was
primarily due to overall increase in the costs related to companion diagnostic
programs. We expect our gross margin to be adversely impacted by the COVID-19
pandemic for the affected periods.

Research and development expense


                                  Three Months Ended June 30,                              Change
                                 2020                       2019             $            %

                                          (unaudited)
                                                (in thousands)
Research and development   $      36,319                 $ 19,532       $ 16,787          86  %


Research and development expenses were $36.3 million for the three months ended
June 30, 2020 compared to $19.5 million for the three months ended June 30,
2019, an increase of $16.8 million, or 86%. This increase in research and
development expense was primarily due to an increase of $7.5 million in
personnel-related costs for employees in our research and development group,
including a $1.2 million increase in stock-based compensation, as we increased
our headcount to support continued investment in our technology. The increase is
also attributable to an increase of $4.7 million in material costs, an increase
of $2.6 million in development consulting fees, an increase of $1.5 million
related to allocated facilities and information technology infrastructure costs
and an increase of $0.2 million in office administrative costs as we increased
our headcount to support continued investment in our technology.
Sales and marketing expense
                               Three Months Ended June 30,                             Change
                              2020                       2019            $            %

                                       (unaudited)
                                            (in thousands)
Sales and marketing     $      25,015                 $ 19,439       $ 5,576          29  %


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Selling and marketing expenses were $25.0 million for the three months ended
June 30, 2020 compared to $19.4 million for the three months ended June 30,
2019, an increase of $5.6 million, or 29%. This increase was primarily due to an
increase of $3.9 million in personnel-related costs, including a $1.5 million
increase in stock-based compensation, associated with the expansion of our
commercial organization. The increase is also attributable to an increase of
$1.3 million in professional service expenses related to marketing activities,
an increase of $1.2 million related to allocated facilities and information
technology infrastructure costs, offset by a decrease of $0.7 million related to
office administrative costs as a result of the COVID-19 pandemic.
General and administrative expense
                                     Three Months Ended June 30,                              Change
                                    2020                       2019             $            %

                                             (unaudited)
                                                   (in thousands)
General and administrative    $      37,186                 $ 13,439       $ 23,747         177  %


General and administrative expenses were $37.2 million for the three months
ended June 30, 2020 compared to $13.4 million for the three months ended June
30, 2019, an increase of $23.7 million, or 177%. This increase was primarily due
to an increase of $20.6 million in personnel-related costs, including a $19.6
million increase in stock-based compensation primarily in connection with the
issuance of market-based restricted stock units to our Founders as well as an
increase in our headcount, an increase of $1.6 million in professional service
expenses related to outside legal, accounting, consulting and IT services, and
an increase of $1.3 million related to allocated facilities and information
technology infrastructure cost. We expect our general and administrative
expenses to significantly increase in the near term primarily due to the expense
recognition associated with the market-based restricted stock units.
Interest income
                         Three Months Ended June 30,                             Change
                        2020                         2019           $           %

                                 (unaudited)
                                      (in thousands)
Interest income   $       2,640                   $ 3,099       $ (459)        (15) %


Interest income was $2.6 million for the three months ended June 30, 2020
compared to $3.1 million for the three months ended June 30, 2019, a decrease of
$0.5 million, or 15%. This decrease was primarily due to a significant decrease
in interest rate as the U.S. Federal Reserve made emergency cuts and lowered the
risk-free interest rate to nearly zero, partially offset by an increase in cash,
cash equivalents and marketable securities during the three months ended June
30, 2020 primarily as a result of cash proceeds from our follow-on public
offering completed in June 2020.
Interest expense
                             Three Months Ended June 30,                             Change
                           2020                           2019          $           %

                                     (unaudited)
                                          (in thousands)
Interest expense     $        (10)                      $ (287)      $ 277         (97) %


Interest expense was immaterial for the three months ended June 30, 2020
compared to $0.3 million for the three months ended June 30, 2019, a decrease of
$0.3 million, or 97%. This decrease was primarily due to the settlement of all
outstanding balances in March 2020 related to the patent license agreement
entered into in January 2017.
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Other income (expense), net
                                      Three Months Ended June 30,                              Change
                                     2020                          2019          $           %

                                              (unaudited)
                                                   (in thousands)
Other income (expense), net   $        2,285                     $ (51)      $ 2,336         *



For the three months ended June 30, 2020, other income (expense), net included
receipt of $1.8 million from HHS's relief fund under the CARES Act and foreign
currency exchange gains of $0.2 million. Other income (expense), net included
foreign currency exchange losses of $0.1 million for the three months ended June
30, 2019.

Provision for (benefit from) income taxes


                                        Three Months Ended June 30,                                     Change
                                         2020                 2019                 $                  %

                                                (unaudited)
                                                        (in thousands)
Provision for (benefit from) income
taxes                               $        34           $   (1,207)         $   1,241               *


* Not meaningful
Provision for income taxes was immaterial for the three months ended June 30,
2020. Benefit from income taxes for the three months ended June 30, 2019 relates
primarily to the release of a valuation allowance of $1.2 million associated
with nondeductible intangible assets recorded as part of the acquisition of
Bellwether Bio, Inc., partially offset by state minimum income tax and income
tax on our earnings in foreign jurisdictions.

Comparison of the Six Months Ended June 30, 2020 and 2019
Revenue
                                    Six Months Ended June 30,                              Change
                                    2020                    2019             $            %

                                           (unaudited)
                                                 (in thousands)
Precision oncology testing    $     111,237              $ 70,901       $ 40,336          57  %
Development services                 22,608                19,729          2,879          15  %
Total revenue                 $     133,845              $ 90,630       $ 43,215          48  %


Total revenue was $133.8 million for the six months ended June 30, 2020 compared
to $90.6 million for the six months ended June 30, 2019, an increase of $43.2
million, or 48%.
Precision oncology testing revenue increased to $111.2 million for the six
months ended June 30, 2020 from $70.9 million for the six months ended June 30,
2019, an increase of $40.3 million, or 57%. This increase in precision oncology
testing revenue was primarily due to an increase in tests performed, an increase
in average selling price per test for similar reasons as noted above, plus $4.1
million in revenue received from Medicare for samples processed in 2019 up from
$1.4 million in revenue received during the six months ended June 30, 2019 from
Medicare for samples processed in 2018. Precision oncology revenue from tests
for clinical customers was $77.6 million in the six months ended June 30, 2020
and $39.0 million in the six months ended June 30, 2019, respectively. Tests for
clinical customers increased to 28,951 for the six months ended June 30, 2020
from 21,396 for the six months ended June 30, 2019 mainly due to an increase in
the number of physicians ordering Guardant360 tests. In March 2020, we began to
receive reimbursement from Medicare for claims submitted with respect to
Guardant360 clinical tests performed for qualifying patients diagnosed with
solid tumor cancers of non-central nervous system origin other than NSCLC. In
May 2020, Noridian issued a coverage article and confirmed limited Medicare
coverage for our Guardant360 test for qualifying patients diagnosed with solid
tumor cancers of non-central nervous system origin
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who meet the criteria of Medicare's National Coverage Determination for Next
Generation Sequencing established in March 2018.
Precision oncology revenue from tests for biopharmaceutical customers was $33.6
million in the six months ended June 30, 2020 and $31.9 million in the six
months ended June 30, 2019, respectively. Tests for biopharmaceutical customers
decreased to 8,071 for the six months ended June 30, 2020 from 9,046 for the six
months ended June 30, 2019 primarily due to the timing and progression of
clinical trials and studies which resulted in fluctuation in the number of
samples received for testing. The average selling price of biopharmaceutical
tests was $4,169 for the six months ended June 30, 2020, up from $3,529 for the
six months ended June 30, 2019 due to a greater number of such tests being the
GuardantOMNI test, which has a higher selling price than the Guardant360 test.
As a result of the COVID-19 pandemic, beginning in the latter half of March
2020, we began receiving fewer samples for testing on a daily average basis from
our clinical and biopharmaceutical customers than before the outbreak of the
COVID-19 pandemic. Our future sample volumes and precision oncology revenue may
be adversely impacted by the COVID-19 pandemic for the affected periods.
Development services revenue increased to $22.6 million for the six months ended
June 30, 2020 from $19.7 million for the six months ended June 30, 2019, an
increase of $2.9 million, or 15%. This increase in development services revenue
was due to progression of collaboration projects from biopharmaceutical
customers for companion diagnostic development and regulatory approval services
completed during the six months ended June 30, 2020. We expect our development
services arrangements with biopharmaceutical customers and development services
revenue to be adversely impacted by the COVID-19 pandemic depending on the
duration and severity of the pandemic.
Cost of Revenue and Gross Margin
                        Six Months Ended June 30,                              Change
                        2020                    2019             $            %

                               (unaudited)
                                 (dollars in thousands)
Cost of revenue   $     42,941               $ 30,368       $ 12,573          41  %
Gross profit      $     90,904               $ 60,262
Gross margin                68   %                 66  %


Cost of revenue was $42.9 million for the six months ended June 30, 2020
compared to $30.4 million for the six months ended June 30, 2019, an increase of
$12.6 million, or 41%.
Cost of precision oncology testing revenue was $36.0 million for the six months
ended June 30, 2020 compared to $25.7 million for the six months ended June 30,
2019, an increase of $10.3 million, or 40%. This increase in cost of precision
oncology testing was attributable to an increase in sample volumes and was
primarily due to a $7.0 million increase in production labor and overhead costs
and a $3.3 million increase in material costs.
Cost of development services was $6.9 million for the six months ended June 30,
2020 compared to $4.7 million for the six months ended June 30, 2019, an
increase of $2.2 million, or 48%. This increase in cost of development services
was primarily due to an increase in labor costs related to companion diagnostic
development and regulatory approval service contracts.
Gross margin for the six months ended June 30, 2020 was 68% compared to 66% for
the six months ended June 30, 2019. Gross margin improvement reflects the impact
of increased average selling price per test. Our gross margin may be adversely
impacted by the COVID-19 pandemic depending on how long the pandemic lasts and
the severity of the situation in coming quarters.
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Operating Expenses
Research and development expense
                                 Six Months Ended June 30,                              Change
                                 2020                    2019             $            %

                                        (unaudited)
                                              (in thousands)
Research and development   $     73,335               $ 35,848       $ 37,487         105  %


Research and development expenses were $73.3 million for the six months ended
June 30, 2020 compared to $35.8 million for the six months ended June 30, 2019,
an increase of $37.5 million, or 105%. This increase in research and development
expense was primarily due to an increase of $11.9 million in personnel-related
costs for employees in our research and development group, including a $2.3
million increase in stock-based compensation, as we increased our headcount to
support continued investment in our technology, an increase of $8.5 million
relating to IPR&D technology expensed in connection with a patent license
acquisition that occurred in March 2020, an increase of $7.2 million in material
costs related to various programs, an increase of $6.2 million in development
consulting fees, an increase of $2.3 million related to allocated facility and
information technology infrastructure costs and an increase of $0.7 million in
office administrative costs as we increased our headcount to support continued
investment in our technology.
Sales and marketing expense
                              Six Months Ended June 30,                              Change
                              2020                    2019             $            %

                                     (unaudited)
                                           (in thousands)
Sales and marketing     $     50,130               $ 37,246       $ 12,884          35  %


Selling and marketing expenses were $50.1 million for the six months ended June
30, 2020 compared to $37.2 million for the six months ended June 30, 2019, an
increase of $12.9 million, or 35%. This increase was primarily due to an
increase of $9.1 million in personnel-related costs, including a $2.5 million
increase in stock-based compensation, associated with the expansion of our
commercial organization, an increase of $2.1 million in professional service
expenses related to marketing activities and an increase of $1.9 million related
to allocated facility and information technology infrastructure costs, offset by
a decrease of $0.2 million related to office administrative costs as a result of
the COVID-19 pandemic.
General and administrative expense
                                    Six Months Ended June 30,                              Change
                                    2020                    2019             $            %

                                           (unaudited)
                                                 (in thousands)
General and administrative    $     56,971               $ 26,100       $ 30,871         118  %


General and administrative expenses were $57.0 million for the six months ended
June 30, 2020 compared to $26.1 million for the six months ended June 30, 2019,
an increase of $30.9 million, or 118%. This increase was primarily due to an
increase of $23.8 million in personnel-related costs, including a $20.5 million
increase in stock-based compensation primarily in connection with the issuance
of market-based restricted stock units to our Founders as well as an increase in
our headcount, an increase of $2.2 million in professional service expenses
related to outside legal, accounting, consulting and IT services, an increase of
$2.4 million related to allocated facilities and information technology
infrastructure costs, an increase of $1.2 million related to settlement costs in
connection with a patent license acquisition that occurred in March 2020, and an
increase of $0.9 million in office administrative costs. We expect our general
and administrative expenses to significantly increase in near term primarily due
to the expense recognition associated with the market-based restricted stock
units.
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Interest income
                         Six Months Ended June 30,                           Change
                        2020                      2019          $           %

                                (unaudited)
                                    (in thousands)
Interest income   $      5,958                 $ 5,584       $ 374           7  %


Interest income was $6.0 million for the six months ended June 30, 2020 compared
to $5.6 million for the six months ended June 30, 2019, an increase of $0.4
million, or 7%. This increase was primarily due to a significant increase in
cash, cash equivalents and marketable securities related to the receipt of cash
proceeds from our follow-on public offering completed in June 2020, offset by a
significant decrease in interest rate as the U.S. Federal Reserve made emergency
cuts and lowered the risk-free interest rate to nearly zero.
Interest expense
                            Six Months Ended June 30,                           Change
                          2020                       2019          $           %

                                   (unaudited)
                                       (in thousands)
Interest expense     $      (22)                   $ (580)      $ 558         (96) %


Interest expense was immaterial for the six months ended June 30, 2020 compared
to $0.6 million for the six months ended June 30, 2019, a decrease of $0.6
million, or 96%. This decrease was primarily due to the settlement of all
outstanding balances in March 2020 related to the patent license agreement
entered into in January 2017.
Other income (expense), net
                                      Six Months Ended June 30,                              Change
                                     2020                        2019          $           %

                                             (unaudited)
                                                  (in thousands)
Other income (expense), net   $        2,076                    $ 96       $ 1,980         *



For the six months ended June 30, 2020, other income (expense), net included
receipt of $1.8 million received from HHS's relief fund under the CARES Act and
foreign currency exchange losses of $0.1 million. Other income (expense), net
included foreign currency exchange gains of $0.1 million for the six months
ended June 30, 2019.

Provision for (benefit from) income taxes


                                         Six Months Ended June 30,                                     Change
                                          2020                2019                $                  %

                                                (unaudited)
                                                        (in thousands)
Provision for (benefit from) income
taxes                                $       48           $  (1,181)         $   1,229               *


* Not meaningful
Provision for income taxes was immaterial for the six months ended June 30,
2020. Benefit from income taxes for the six months ended June 30, 2019 relates
primarily to the release of a valuation allowance of $1.2 million associated
with nondeductible intangible assets recorded as part of the acquisition of
Bellwether Bio, Inc., partially offset by state minimum income tax and income
tax on our earnings in foreign jurisdictions.
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Liquidity and capital resources
We have incurred losses and negative cash flows from operations since our
inception, and as of June 30, 2020, we had an accumulated deficit of $435.2
million. We expect to incur additional operating losses in the near future and
our operating expenses will increase as we continue to invest in clinical trials
and develop new product offerings from our research programs, including our
LUNAR program, expand our sales organization, and increase our marketing efforts
to drive market adoption of our Guardant360 and GuardantOMNI tests. Our capital
expenditure requirements could also increase if we build additional laboratory
capacity.
We have funded our operations to date principally from the sale of stock, and
revenue from precision oncology testing and development services. As of June 30,
2020, we had cash and cash equivalents of $164.7 million and marketable
securities of $919.3 million. Cash in excess of immediate requirements is
invested in accordance with our investment policy, primarily with a view to
provide liquidity while ensuring capital preservation. Currently, our funds are
held in marketable securities consisting of United States treasury securities
and corporate bonds.
Based on our current business plan, we believe our current cash, cash
equivalents and marketable securities and anticipated cash flows from
operations, will be sufficient to meet our anticipated cash requirements over at
least the next 12 months from the date of this report. We may consider raising
additional capital to expand our business, to pursue strategic investments, to
take advantage of financing opportunities or for other reasons. As revenue from
precision oncology testing and development services is expected to grow
long-term, we expect our accounts receivable and inventory balances to increase.
Any increase in accounts receivable and inventory may not be completely offset
by increases in accounts payable and accrued expenses, which could result in
greater working capital requirements.
If our available cash, cash equivalents and marketable securities and
anticipated cash flows from operations are insufficient to satisfy our liquidity
requirements including because of lower demand for our products as a result of
lower than currently expected rates of reimbursement from our customers or other
risks described in our Form 10-K for the year ended December 31, 2019 and our
Form 10-Q for the quarter ended March 31, 2020, we may seek to sell additional
common or preferred equity or convertible debt securities, enter into a credit
facility or another form of third-party funding or seek other debt financing.
The sale of equity and convertible debt securities may result in dilution to our
stockholders and, in the case of preferred equity securities or convertible
debt, those securities could provide for rights, preferences or privileges
senior to those of our common stock. The terms of debt securities issued or
borrowings pursuant to a credit agreement could impose significant restrictions
on our operations. If we raise funds through collaborations and licensing
arrangements, we might be required to relinquish significant rights to our
platform technologies or products or grant licenses on terms that are not
favorable to us. Additional capital may not be available to us on reasonable
terms, or at all.
Cash flows
The following table summarizes our cash flows for the periods presented:
                                                Six Months Ended June 30,
                                                  2020              2019

                                                       (unaudited)
                                                     (in thousands)

Net cash used in operating activities $ (36,647) $ (18,139) Net cash used in investing activities $ (304,745) $ (305,198) Net cash provided by financing activities $ 362,786 $ 357,356




Operating activities
Cash used in operating activities during the six months ended June 30, 2020 was
$36.6 million, which resulted from a net loss of $81.6 million and net change in
our operating assets and liabilities of $7.1 million, partially offset by
non-cash charges of $52.0 million. Non-cash charges primarily consisted of $32.2
million of stock-based compensation, $8.5 million of charge of in-process
research and development costs with no alternative future use, $7.1 million of
depreciation and amortization, $3.4 million of right-of-use assets amortization,
and $1.1 million of amortization of premium on investment. The net change in our
operating assets and liabilities was primarily the result of a $5.2 million
increase in inventory, a $3.9 million payment of operating lease liabilities, a
$2.5 million
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decrease in accounts payable, a $1.8 million decrease in accrued expenses and a
$0.8 million decrease in deferred revenue, partially offset by a $6.9 million
decrease in accounts receivables.
Cash used in operating activities during the six months ended June 30, 2019 was
$18.1 million, which resulted from a net loss of $32.7 million, partially offset
by non-cash charges of $10.5 million and net change in our operating assets and
liabilities of $4.0 million. Non-cash charges primarily consisted of $5.0
million of depreciation and amortization, $6.4 million of stock-based
compensation, and $1.6 million of right-of-use assets amortization, partially
offset by $1.3 million of amortization of discount on investment and $1.2
million of benefit from income tax differences. The net change in our operating
assets and liabilities was primarily the result of a $3.4 million increase in
accounts payable due to timing of payment, a $2.9 million increase in accrued
expenses, a $1.4 million receipt of tenant improvement allowance net of payment
of operating lease liabilities, and a $0.7 million increase in accrued
compensation due to increased personnel, partially offset by a $5.0 million
increase in inventory due to higher testing volumes.
Investing activities
Cash used in investing activities during the six months ended June 30, 2020 was
$304.7 million, which resulted primarily from purchases of marketable securities
of $465.3 million, purchases of property and equipment of $19.1 million and
purchases of intangible assets and capitalized license obligations of $17.9
million, partially offset by maturities of marketable securities of $197.5
million.
Cash used in investing activities during the six months ended June 30, 2019 was
$305.2 million, which resulted primarily from purchases of marketable securities
of $418.8 million, business acquisition, net of cash acquired, of $9.8 million
and purchases of property and equipment of $5.8 million, partially offset by
maturities of marketable securities of $129.2 million.
Financing activities
Cash provided by financing activities during the six months ended June 30, 2020
was $362.8 million, which was primarily due to proceeds from a follow-on
offering of our common stock, net of underwriting discounts and commissions and
offering expenses payable by us, of $354.6 million, proceeds from issuances of
common stock under employee stock purchase plan of $4.0 million and proceeds
from exercise of stock options of $3.5 million.
Cash provided by financing activities during the six months ended June 30, 2019
was $357.4 million, which was primarily due to proceeds from a public offering
of our common stock, net of underwriting discounts and commissions and offering
expenses payable by us, of $349.7 million, proceeds from exercise of stock
options of $5.5 million, and proceeds from issuances of common stock under
employee stock purchase plan of $1.9 million.
Contractual obligations and commitments
Except as set forth in Note 9, Commitments and Contingencies, of the notes to
our condensed consolidated financial statements included elsewhere in this
Quarterly Report on Form 10-Q, there have been no material changes outside the
ordinary course of business to our contractual obligations and commitments as
described in "Management's Discussion and Analysis of Financial Condition and
Results of Operations" in our Annual Report on Form 10-K for the year ended
December 31, 2019.
Off-balance sheet arrangements
As of June 30, 2020, we have not had any off-balance sheet arrangements as
defined in the rules and regulations of the SEC.
Critical accounting policies and estimates
We have prepared our financial statements in accordance with accounting
principles generally accepted in the United States of America ("GAAP"). Our
preparation of these financial statements requires us to make estimates,
assumptions and judgments that affect the reported amounts of assets,
liabilities, expenses and related disclosures at the date of the financial
statements, as well as revenue and expenses recorded during the reporting
periods. We evaluate our estimates and judgments on an ongoing basis. We base
our estimates on historical experience and on various other factors that we
believe are reasonable under the circumstances, the results of which form the
basis for
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making judgments about the carrying value of assets and liabilities that are not
readily apparent from other sources. Actual results could therefore differ
materially from these estimates under different assumptions or conditions.
While our significant accounting policies are described in more detail in Note 2
to our unaudited condensed consolidated financial statements included elsewhere
in this Quarterly Report on Form 10-Q, we believe the following accounting
policies to be critical to the judgments and estimates used in the preparation
of our financial statements.
Revenue recognition
We derive revenue from the provision of precision oncology testing services
provided to our ordering physicians and biopharmaceutical customers, as well as
from biopharmaceutical research and development services provided to our
biopharmaceutical customers. Precision oncology services include genomic
profiling and the delivery of other genomic information derived from our
platform. Development services include companion diagnostic development,
information solutions and laboratory services. We currently receive payments
from commercial third-party payors, certain hospitals and oncology centers and
individual patients, as well as biopharmaceutical companies and research
institutes.
Effective January 1, 2019, we began recognizing revenue in accordance with ASC
Topic 606, Revenue from Contracts with Customers, or ASC 606. Revenues are
recognized when control of services is transferred to customers, in an amount
that reflects the consideration we expect to be entitled to in exchange for
those services. ASC 606 provides for a five-step model that includes identifying
the contract with a customer, identifying the performance obligations in the
contract, determining the transaction price, allocating the transaction price to
the performance obligations, and recognizing revenue when, or as, an entity
satisfies a performance obligation.
Precision oncology testing
We recognize revenue from the sale of our precision oncology tests for clinical
customers, including certain hospitals, cancer centers, other institutions and
patients, at the time results of the test are reported to physicians. Most
precision oncology tests requested by clinical customers are sold without a
written agreement; however, we determine an implied contract exists with our
clinical customers. We identify each sale of our liquid biopsy test to clinical
customer as a single performance obligation. With the exception of certain
limited contracted arrangements with insurance carriers and other institutions
where the transaction price is fixed, a stated contract price does not exist and
the transaction price for each implied contract with our clinical customers
represents variable consideration. We estimate the variable consideration under
the portfolio approach and consider the historical reimbursement data from
third-party payers and patients, as well as known current or anticipated
reimbursement trends not reflected in the historical data. We monitor the
estimated amount to be collected in the portfolio at each reporting period based
on actual cash collections in order to assess whether a revision to the estimate
is required. Both the estimate and any subsequent revision contain uncertainty
and require the use of judgment in the estimation of the variable consideration
and application of the constraint for such variable consideration. We analyze
actual cash collections over the expected reimbursement period and compare it
with the estimated variable consideration for each portfolio and any difference
is recognized as an adjustment to estimated revenue after the expected
reimbursement period, subject to assessment of the risk of future revenue
reversal.
Revenue from sales of precision oncology tests to biopharmaceutical customers
are based on a negotiated price per test or on the basis of an agreement to
provide certain testing volume over a defined period. We identify our promise to
transfer a series of distinct liquid biopsy tests to biopharmaceutical customers
as a single performance obligation. Precision oncology tests to
biopharmaceutical customers are generally billed at a fixed price for each test
performed. For agreements involving testing volume to be satisfied over a
defined period, revenue is recognized over time based on the number of tests
performed as the performance obligation is satisfied over time.
Results of our precision oncology services are delivered electronically, and as
such there are no shipping or handling fees incurred by us or billed to
customers.
Development services
We perform development services for our biopharmaceutical customers utilizing
our precision oncology information platform. Development services typically
represent a single performance obligation as we perform a significant
integration service, such as analytical validation and regulatory submissions.
The individual promises are not separately identifiable from other promises in
the contracts and, therefore, are not distinct. However, under certain
contracts, a biopharmaceutical customer may engage us for multiple distinct
development services which are both capable of being distinct and separately
identifiable from other promises in the contracts and, therefore, distinct
performance obligations.
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We collaborate with pharmaceutical companies in the development and clinical
trials of new drugs. As part of these collaborations, we provide services
related to regulatory filings with the FDA to support companion diagnostic
device submissions for our liquid biopsy panels. Under these collaborations, we
generate revenue from achievement of milestones, as well as provision of
on-going support. These collaboration arrangements include no royalty
obligations. For development services performed, we are compensated through a
combination of an upfront fee and performance-based non-refundable regulatory
and other developmental milestone payments. The transaction price of our
development services contracts typically represents variable consideration.
Application of the constraint for variable consideration to milestone payments
is an area that requires significant judgment. We evaluate factors such as the
scientific, clinical, regulatory, commercial, and other risks that must be
managed to achieve the respective milestone and the level of effort and
investment required to achieve the respective milestone. In making this
assessment, we consider our historical experience with similar milestones, the
degree of complexity and uncertainty associated with each milestone, and whether
achievement of the milestone is dependent on parties other than us. The
constraint for variable consideration is applied such that it is probable a
significant reversal of revenue will not occur when the uncertainty associated
with the contingency is resolved. Application of the constraint for variable
consideration is updated at each reporting period as a revision to the estimated
transaction price.
We recognize development services revenue over the period in which
biopharmaceutical research and development services are provided. Specifically,
we recognize revenue using an input method to measure progress, utilizing costs
incurred to-date relative to total expected costs as its measure of progress. We
also assess the changes to the total expected cost estimates as well as any
incremental fees negotiated resulting from changes to the scope of the original
contract in determining the revenue recognition at each reporting period. For
development of new products or services under these arrangements, costs incurred
before technological feasibility is reached are included as research and
development expenses in our condensed consolidated statements of operations,
while costs incurred thereafter are recorded as cost of development services.
Contracts with multiple performance obligations
Contracts with biopharmaceutical customers may include multiple distinct
performance obligations, such as provision of precision oncology testing,
biopharmaceutical research and development services, and clinical trial
enrollment assistance, among others. We evaluate the terms and conditions
included within our contracts with biopharmaceutical customers to ensure
appropriate revenue recognition, including whether services are considered
distinct performance obligations that should be accounted for separately versus
together. We first identify material promises, in contrast to immaterial
promises or administrative tasks, under the contract and then evaluates whether
these promises are both capable of being distinct and distinct within the
context of the contract. In assessing whether a promised service is capable of
being distinct, we consider whether the customer could benefit from the service
either on its own or together with other resources that are readily available to
the customer, including factors such as the research, development, and
commercialization capabilities of a third party and the availability of the
associated expertise in the general marketplace. In assessing whether a promised
service is distinct within the context of the contract, we consider whether we
provide a significant integration of the services, whether the services
significantly modify or customize one another, or whether the services are
highly interdependent or interrelated.
For contracts with multiple performance obligations, the transaction price is
allocated to the separate performance obligations on a relative standalone
selling price basis. We determine standalone selling price by considering the
historical selling price of these performance obligations in similar
transactions as well as other factors, including, but not limited to, the price
that customers in the market would be willing to pay, competitive pricing of
other vendors, industry publications and current pricing practices, and expected
costs of satisfying each performance obligation plus appropriate margin.
Variable interest entity
We review agreements we enter into with third party entities, pursuant to which
we may have a variable interest in the entity, in order to determine if the
entity is a variable interest entity, or VIE. If the entity is a VIE, we assess
whether or not we are the primary beneficiary of that entity. In determining
whether we are the primary beneficiary of an entity, we apply a qualitative
approach that determines whether we have both (1) the power to direct the
economically significant activities of the entity and (2) the obligation to
absorb losses of, or the right to receive benefits from, the entity that could
potentially be significant to that entity. If we determine we are the primary
beneficiary of a VIE, we consolidate the statements of operations and financial
condition of the VIE into our consolidated financial statements. Accounting for
the consolidation is based on our determination if the VIE meets the definition
of a business or and asset. Assets, liabilities and noncontrolling interests,
excluding goodwill, of VIEs that are not determined to be businesses are
recorded at fair value in our financial statements upon consolidation. Assets
and liabilities that we have transferred to a VIE, after, or shortly before the
date we became the primary
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beneficiary are recorded at the same amount at which the assets and liabilities
would have been measured if they had not been transferred. Our determination
about whether we should consolidate such VIEs is made continuously as changes to
existing relationships or future transactions may result in a consolidation or
deconsolidation event.
In May 2018, we and an affiliate of SoftBank formed and capitalized the Joint
Venture for the sale, marketing and distribution of our tests in the JV
Territory. We expect to rely on the Joint Venture to accelerate
commercialization of our products in Asia, the Middle East and Africa, with an
initial focus on Japan. The Joint Venture is deemed to be a VIE and we are
identified as the primary beneficiary of the VIE. Consequently, we have
consolidated the financial position, results of operations and cash flows of the
Joint Venture in our financial statements and all intercompany balances have
been eliminated in consolidation.
The joint venture agreement also includes a put-call arrangement with respect to
the shares of the Joint Venture held by SoftBank and its affiliates. SoftBank
will have a put right to cause us to purchase all shares of the Joint Venture
held by SoftBank and its affiliates, and we will have a call right to purchase
all such shares in the event of (i) certain material disagreement relating to
the Joint Venture or its business that may seriously affect the ability of the
Joint Venture to perform its obligations under the joint venture agreement or
may otherwise seriously impair the ability of the Joint Venture to conduct its
business in an effective matter, other than one relating to the Joint Venture's
business plan or to factual matters that may be capable of expert determination;
(ii) the effectiveness of our initial public offering, a change in control, the
seventh anniversary of the formation of the Joint Venture, or each subsequent
anniversary of each of the foregoing events; or (iii) a material breach of the
joint venture agreement by the other party that goes unremedied
within 20 business days. Unless the shares of the Joint Venture are publicly
traded and listed on a nationally recognized stock exchange; the purchase price
per share of the Joint Venture in these situations will be determined by a
third-party valuation firm on the assumption that the sale is on an arm's-length
basis on the date of the put or call notice. The third-party valuation firm may
evaluate a range of factors and employ assumptions that are subjective in
nature, which could result in the fair value of SoftBank's interest in the Joint
Venture being determined to be materially different from what has been recorded
in our condensed consolidated financial statements, including those included
elsewhere in this Quarterly Report on Form 10-Q.
In the event we exercise our call right, the fair value of the Joint Venture
will be deemed to be no less than an amount that yields a 20% internal rate of
return on each tranche of capital invested by SoftBank and its affiliates in the
Joint Venture, taking into account all proceeds received by SoftBank and its
affiliates arising from their shares through such date.
In the event SoftBank exercises its put right and the fair value of the Joint
Venture is determined to be greater than 40% of our fair value, we will only be
required to purchase the number of shares of the Joint Venture held by SoftBank
and its affiliates having an aggregate value equal to the product of 40% of our
fair value and the pro rata portion of the outstanding shares of the Joint
Venture held by SoftBank and its affiliates.
We may pay the purchase price for the shares of the Joint Venture in cash, in
shares of our common stock, or in a combination thereof. In the event we
exercise the call right, SoftBank will choose the form of consideration. In the
event SoftBank exercises the put right, we will choose the form of
consideration.
The noncontrolling interest held by SoftBank contains embedded put-call
redemption features that are not solely within our control and has been
classified outside of permanent equity in our consolidated balance sheets. The
put-call feature embedded in the redeemable noncontrolling interest do not
currently require bifurcation as it does not meet the definition of a derivative
and is considered to be clearly and closely related to the redeemable
noncontrolling interest. The noncontrolling interest is considered probable of
becoming redeemable as SoftBank has the option to exercise its put right to sell
its equity ownership in the Joint Venture to us on or after the seventh
anniversary of the formation of the Joint Venture, on each subsequent
anniversary of the IPO and under certain other circumstances. We elected to
recognize the change in redemption value immediately as they occur as if the
put-call redemption feature were exercisable at the end of the reporting period.
Stock-based compensation
After the adoption of Accounting Standards Update 2018-07, Compensation-Stock
Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment
Accounting on January 1, 2019, we measure stock-based compensation expense for
stock options granted to our employees, directors, and nonemployee consultants
on the date of grant and recognize the corresponding compensation expense of
those awards over the period that the related services are rendered, which is
generally the vesting period of the respective award. Compensation expense for
stock options with performance metrics is calculated based upon expected
achievement of the metrics specified in the grant.
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We estimate the fair value of stock options granted to our employees, directors,
and nonemployee consultants and stock purchase rights under our 2018 Employee
Stock Purchase Plan on the grant date using the Black-Scholes option-pricing
model. The Black-Scholes option-pricing model requires the use of assumptions
regarding a number of variables that are complex, subjective and generally
require significant judgment to determine. The assumptions used to calculate the
fair value of our stock options were:
Expected term
Our expected term represents the period that our stock options are expected to
be outstanding. After the adoption of Accounting Standards Update 2018-07,
Compensation-Stock Compensation (Topic 718): Improvements to Nonemployee
Share-Based Payment Accounting on January 1, 2019, the expected term of stock
options issued to employees, directors and nonemployee consultants is determined
using the simplified method (based on the mid-point between the vesting date and
the end of the contractual term), as we do not have sufficient historical data
to use any other method to estimate expected term.
Expected volatility
Prior to the commencement of trading of our common stock on the Nasdaq Global
Select Market on October 4, 2018 in connection with the IPO, there was no active
trading market for our common stock. Due to limited historical data for the
trading of our common stock, expected volatility is estimated based on the
average volatility for comparable publicly traded peer group companies in the
same industry plus our expected volatility for the available periods. The
comparable companies are chosen based on their similar size, stage in the life
cycle or area of specialty.

Risk-free interest rate
The risk-free interest rate is based on the U.S. treasury zero coupon issues in
effect at the time of grant for periods corresponding with the expected term of
the stock option grants.
Expected dividend yield
We have never paid dividends on our common stock and have no plans to pay
dividends on our common stock. Therefore, we use an expected dividend yield of
zero.
Black-Scholes assumptions
The weighted-average assumptions used in our Black-Scholes option-pricing model
were as follows for stock option granted to our employees, directors and
nonemployees for the periods presented:
                                                            Three Months Ended June 30,                                                      Six Months Ended June 30,
                                                       2020                            2019                      2020                      2019

                                                                                              (unaudited)
Expected term (in years)                            5.50 - 6.10                     5.50 - 6.16               5.50 - 6.10               5.50 - 6.22
Expected volatility                                66.5% - 68.5%                   66.9% - 68.3%             66.5% - 73.3%             66.7% - 68.3%
Risk-free interest rate                             0.4% - 0.4%                        1.9%                   0.4% - 1.6%               1.9% - 2.7%
Expected dividend yield                                 -%                              -%                        -%                        -%


For market-based restricted stock units, we derive the requisite service period
using the Monte Carlo simulation model. The estimated fair value of the
market-based restricted stock units was determined using a Monte Carlo
simulation model which requires the use of assumptions regarding a number of
variables that are complex, subjective and generally require significant
judgment to determine. Stock-based compensation expense will be recorded
regardless of achieving the market conditions or not. If the related market
condition is achieved earlier than its expected derived service period, the
stock-based compensation expense will be recognized as a cumulative catch-up
expense from the grant date to that point in time in achieving the share price
goal.
The assumptions used to calculate the fair value of our market-based restricted
stock units were as follows:
Fair Value of Common Stock
The fair value of our common stock is determined by the closing price, on the
date of grant, of its common stock, which is traded on the Nasdaq Global Select
Market.
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Expected Volatility
Due to limited historical data for the trading of the our common stock, expected
volatility is estimated based on the average volatility for comparable publicly
traded peer group companies and implied volatility of publicly traded options in
the same industry plus our expected volatility for the available periods. The
comparable companies are chosen based on their similar size, stage in the life
cycle or area of specialty.

Expected Term
The expected term represents the derived service period for the respective
tranches which has been estimated using the Monte Carlo simulation model.
Risk-Free Interest Rate
The risk-free interest rate is based on the U.S. Treasury rate, with maturities
similar to the expected term of the market-based restricted stock units.
Risky Rate
The risky rate represents our cost of equity.
Expected Dividend Yield
We do not anticipate paying any dividends in the foreseeable future and,
therefore, uses an expected dividend yield of zero.
Discount for Lack of Marketability
The discount for lack of marketability represents the discount applied for post
vest term restrictions and has been derived using the Monte Carlo simulation
model.
The following assumptions were used to calculate the stock-based compensation
for market-based restricted stock units: a weighted-average expected life of
0.83 - 2.07 years; expected volatility of 65.5%; a risk-free interest rate of
0.5%; a zero dividend yield; a risky rate (cost of equity) of 16%; and a
discount for post-vesting restrictions of 10.4% - 14.5%.
We recognize stock-based compensation expense net of forfeitures as they occur.
We will continue to use judgment in evaluating the assumptions related to our
stock-based compensation on a prospective basis. As we continue to accumulate
additional data related to our common stock, we may have refinements to our
estimates, which could materially impact our future stock-based compensation
expense.
Recent accounting pronouncements
See Note 2, Summary of Significant Accounting Policies, to our unaudited
condensed consolidated financial statements included elsewhere in this Quarterly
Report on Form 10-Q for more information.
Item 3. Quantitative and Qualitative Disclosures About Market Risk
We are exposed to market risk in the ordinary course of our business. Market
risk represents the risk of loss that may impact our financial position due to
adverse changes in financial market prices and rates.
Interest rate risk
We are exposed to market risk for changes in interest rates related primarily to
our cash and cash equivalents and marketable securities. As of June 30, 2020, we
had cash and cash equivalents of $164.7 million held primarily in cash deposits
and money market funds. Our marketable securities are held in U.S. government
debt securities, U.S. government agency bonds and corporate bonds. As of
June 30, 2020, we had short-term marketable securities of $773.2 million and
long-term marketable securities of $146.1 million. Our primary exposure to
market risk is interest income sensitivity, which is affected by changes in the
general level of the interest rates in the United States. As of June 30, 2020, a
hypothetical 100 basis point increase in interest rates would have resulted in
an approximate $6.1 million decline of the fair value of our available-for-sale
securities and a hypothetical 100 basis point decrease in interest rates would
have resulted in an approximate $1.0 million increase of the fair value of our
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available-for-sale securities. This estimate is based on a sensitivity model
that measures market value changes when changes in interest rates occur.
Foreign currency risk
The majority of our revenue is generated in the United States. Through June 30,
2020, we have generated an insignificant amount of revenues denominated in
foreign currencies. As we expand our presence in the international market, our
results of operations and cash flows are expected to increasingly be subject to
fluctuations due to changes in foreign currency exchange rates and may be
adversely affected in the future due to changes in foreign exchange rates. As of
June 30, 2020, the effect of a hypothetical 10% change in foreign currency
exchange rates would not be material to our financial condition or results of
operations. To date, we have not entered into any hedging arrangements with
respect to foreign currency risk. As our international operations grow, we will
continue to reassess our approach to manage our risk relating to fluctuations in
currency rates.
Item 4. Controls and Procedures
Evaluation of disclosure controls and procedures
Our Chief Executive Officer, or CEO, and our Chief Financial Officer, or CFO
with the participation of other members of our management, have evaluated the
effectiveness of our "disclosure controls and procedures" (as such term is
defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of
1934, as amended (the "Exchange Act")) as of June 30, 2020, and our CEO and our
CFO have concluded that our disclosure controls and procedures are effective
based on their evaluation of these controls and procedures as required by
paragraph (b) of Exchange Act Rules 13a-15 or 15d-15.

Changes in internal control
There was no change in our internal control over financial reporting identified
in connection with the evaluation required by Rule 13a-15(d) and 15d-15(d) of
the Exchange Act that occurred during the period covered by this Quarterly
Report on Form 10-Q that has materially affected, or is reasonably likely to
materially affect, our internal control over financial reporting. We have not
experienced any material impact to our internal controls over financial
reporting despite the fact that a number of our employees are working remotely
due to the COVID-19 pandemic. We are continually monitoring and assessing the
COVID-19 situation on our internal controls to minimize the impact on their
design and operating effectiveness.
Limitations on effectiveness of controls and procedures
Our management, including our CEO and our CFO, believes that our disclosure
controls and procedures and internal control over financial reporting are
designed to provide reasonable assurance of achieving their objectives and are
effective at the reasonable assurance level. However, our management does not
expect that our disclosure controls and procedures or our internal control over
financial reporting will prevent all errors and all fraud. A control system, no
matter how well conceived and operated, can provide only reasonable, not
absolute, assurance that the objectives of the control system are met. Further,
the design of a control system must reflect the fact that there are resource
constraints, and the benefits of controls must be considered relative to their
costs. Because of the inherent limitations in all control systems, no evaluation
of controls can provide absolute assurance that all control issues and instances
of fraud, if any, have been detected. These inherent limitations include the
realities that judgments in decision making can be faulty, and that breakdowns
can occur because of a simple error or mistake. Additionally, controls can be
circumvented by the individual acts of some persons, by collusion of two or more
people or by management override of the controls. The design of any system of
controls also is based in part upon certain assumptions about the likelihood of
future events, and there can be no assurance that any design will succeed in
achieving its stated goals under all potential future conditions; over time,
controls may become inadequate because of changes in conditions, or the degree
of compliance with policies or procedures may deteriorate. Because of the
inherent limitations in a cost-effective control system, misstatements due to
error or fraud may occur and not be detected.

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