You should read the following discussion and analysis of our financial condition and results of operations in conjunction with our unaudited condensed consolidated financial statements and related notes included in Part I, Item 1 of this report. Our actual results could differ materially from those discussed below. Factors that could cause or contribute to such differences include, but are not limited to, those identified below and those discussed in "Risk Factors" in our Annual Report on Form 10-K for the year ended December 31, 2021, filed as of February 25, 2022).

Overview

We are a diagnostics company with proprietary molecular and bioinformatics technology that we deploy to change the management of disease worldwide. We began in the women's health space, in which we develop and commercialize non- or minimally- invasive tests to evaluate risk for, and thereby enable early detection of, a wide range of genetic conditions, such as Down syndrome. Our technology is now also being proven in the oncology market, in which we are commercializing, among others, a personalized blood-based DNA test to detect molecular residual disease and monitor disease recurrence, as well as in the organ health market, with tests to assess organ transplant rejection. We seek to enable even wider adoption of our technology through Constellation, our global cloud-based distribution model. In addition to our direct sales force in the United States, we have a global network of over 100 laboratory and distribution partners, including many of the largest international laboratories.

We currently provide a comprehensive suite of products in women's health, as well as our oncology and organ health products, and our Constellation cloud-based platform. We generate a majority of our revenues from the sale of Panorama, our non-invasive prenatal test ("NIPT"), as well as Horizon, our Carrier Screening ("HCS") test. In addition to Panorama and Horizon, our product offerings in women's health include Spectrum Preimplantation Genetics, our Anora miscarriage test, and Vistara single-gene NIPT, as well as our Empower hereditary cancer screening test, which we also plan to offer to oncologists through our oncology sales channel. We also offer our Signatera molecular residual disease test for oncology applications, which we commercialize as a test run in our CLIA laboratory and offer on a RUO basis to research laboratories and pharmaceutical companies; and our Prospera organ transplant assessment tests.

We process tests in our laboratories certified under the Clinical Laboratory Improvement Amendments of 1988 ("CLIA") in Austin, Texas and San Carlos, California. A portion of our testing is performed by third-party laboratories. Our customers include independent laboratories, national and regional reference laboratories, medical centers and physician practices for our screening tests, and research laboratories and pharmaceutical companies. We market and sell our tests through our direct sales force and, for our women's health tests, through our laboratory distribution partners. We bill clinics, laboratory distribution partners, patients, pharmaceutical companies and insurance payers for the tests we perform. In cases where we bill laboratory distribution partners, our partners in turn bill clinics, patients and insurers. The majority of our revenue comes from insurers with whom we have in-network contracts. Such insurers reimburse us for our tests pursuant to our in-network contracts with them, based on positive coverage determinations, which means that the insurer has determined that the test in general is medically necessary for this category of patient.

In addition to offering tests to be performed at our laboratories, either directly or through our laboratory distribution partners, we also establish licensing arrangements with laboratories under Constellation, our cloud-based distribution model, whereby our laboratory licensees run the molecular workflows themselves and then access our bioinformatics algorithms through our cloud-based software. This cloud-based distribution model results in lower revenues and gross profit per test than cases in which we process a test ourselves; however, because we do not incur the costs of processing the tests, our costs per test under this model are also lower. We began entering into these licensing arrangements starting in the fourth quarter of 2015.

The principal focus of our commercial operations is to offer our tests through both our direct sales force and laboratory distribution partners, and our Constellation licensees under our cloud-based distribution model. The number of tests that we accession is a key indicator that we use to assess our business. A test is accessioned when we receive the test at our laboratory, the relevant information about the test is entered into our computer system, and the test sample is routed into the appropriate workflow. This number is a subset of the number of tests that we process, which includes tests



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distributed through our Constellation licensees. The number of tests that we process is a key metric as it tracks overall volume growth, particularly as our laboratory partners may transition from sending samples to our laboratory to our cloud-based distribution model, as a result of which our tests accessioned would decrease but our tests processed would remain unchanged.

During the three months ended March 31, 2022, we processed 489,300 tests, comprised of approximately 473,200 tests accessioned in our laboratory, compared to approximately 348,200 tests processed, comprised of approximately 333,400 tests accessioned in our laboratory, during the three months ended March 31, 2021. This increase in volume primarily represents continued commercial growth of Panorama and HCS, both as tests performed in our laboratory as well as through our Constellation software platform.

The percent of our revenues attributable to our U.S. direct sales force for the three months ended March 31, 2022 was 90%, flat compared to 90% for the three months ended March 31, 2021. The percent of our revenues attributable to U.S. laboratory distribution partners for the three months ended March 31, 2022 was 7%, an increase from 5% in the same period in the prior year. Our ability to increase our revenues and gross profit will depend on our ability to further penetrate the U.S. market with our direct sales force. The percent of our revenues attributable to international laboratory distribution partners and other international sales for the three months ended March 31, 2022 was 3%, down from 5% for the three months ended March 31, 2021, due primarily to the increase in US direct sales as a percentage of revenue.

For the three months ended March 31, 2022, total revenues were $194.1 million, compared to $152.3 million in the three months ended March 31, 2021. Revenues generated from testing accounted for $190.0 million, 98% of total revenues for the three months ended March 31, 2022; compared to $120.4 million representing 79% of total revenues for the three months ended March 31, 2021. For the three months ended March 31, 2022 and 2021, no customers exceeded 10% of the total revenues on an individual basis. Revenues from customers outside the United States were $6.9 million, representing approximately 4% of total revenues for the three months ended March 31, 2022. For the three months ended March 31, 2021, revenues from customers outside the United States were $7.4 million, representing approximately 5% total revenues. Most of our revenues have been denominated in U.S. dollars, though we generate some revenue in foreign currency, primarily denominated in Euros and Singapore Dollars.

Our net loss for the three months ended March 31, 2022 and 2021 were $138.6 million and $63.9 million, respectively. This included non-cash stock compensation expense of $35.1 million and $23.2 million for the three months ended March 31, 2022 and 2021, respectively. As of March 31, 2022, we had an accumulated deficit of $1.5 billion.

COVID-19 Impact

The COVID-19 pandemic has continued to present a global public health and economic challenge that has affected our business operations and the U.S. and other major economies and financial markets. We have modified our business practices in response to the spread of COVID-19 (including temporary closures of our offices, implementing remote work policies and practices, vaccination requirements, travel restrictions, and other measures as we have deemed necessary or appropriate from time to time), and incur additional operating costs, and we may take further actions from time to time as may be required by government authorities or that we determine are in the best interests of our employees, customers and business partners. Such actions could also impact our ability to fully integrate businesses we may acquire in the future. There is no certainty that such actions will be sufficient to mitigate the continuing risks posed by the virus or otherwise be satisfactory to government authorities. If significant portions of our workforce, and particularly our laboratory staff, are unable to work effectively, including due to illness, quarantines, social distancing, recruiting and retention difficulties, government actions, including the prospect of rising interest rates, inflationary pressure, and stock market volatility, or other restrictions in connection with the COVID-19 pandemic, our operations and financial results will be impacted.

The extent to which the COVID-19 pandemic will continue to impact our business, results of operations and financial condition will depend on future developments, which continue to remain highly uncertain and cannot be predicted, including, but not limited to, the continued duration and spread of the pandemic, including the contagiousness of variants and their severity, the actions to contain the virus or address its impact, and whether, when and to what extent pre-pandemic economic and operating activities can resume. The COVID-19 pandemic could continue to limit the ability



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of our customers, suppliers and business partners to perform under their contracts with us, including third-party payers' ability to make timely payments to us during and following the pandemic. We may also experience a shortage of laboratory supplies and reagents or a suspension of services from other laboratories or third parties. We also increased our dependence on growing and maintaining a network of mobile phlebotomy specialists who can provide testing capabilities, as many consumers are unable to visit clinics, hospitals or other testing facilities as a result of the COVID-19 pandemic. Even after the COVID-19 pandemic has subsided, we may continue to experience an adverse impact to our business because of its global economic impact, including as a result of inflation and any recession that has occurred or may occur in the future.

Specifically, difficult macroeconomic conditions as a result of COVID-19, such as decreases in per capita income and level of disposable income, increased and prolonged unemployment, a decline in consumer confidence, as well as limited or significantly reduced points of access of our products, could have a material adverse effect on the demand for some of our products, such as our products targeted for the IVF market. Decreased demand for our tests, particularly in the United States, could negatively affect our overall financial performance. A significant portion of our revenue is concentrated in the United States, where the impact of COVID-19 has been significant, and the potential decrease in demand for our tests could have a disproportionately negative impact on our business and financial results.

In particular, while our test volumes and the average selling price of our tests collected from insurance payors in the three months ended March 31, 2022 have increased compared to the three months ended March 31, 2021, we cannot predict volatility of the volumes and selling prices of our tests that may result from the continued impact of the COVID-19 pandemic, and either or both of these metrics may fluctuate from period to period. Further, we cannot predict the potential nature, magnitude and duration of the effects of the COVID-19 pandemic on our business.

In response to the COVID-19 pandemic, we have implemented measures to protect the health of our employees and to support the functionality of our laboratories. We will continue to support and incur expenditures towards COVID-19 prevention and employee safety.

Since the World Health Organization ("WHO") declared the global outbreak of COVID-19 to be a pandemic in March 2020, we have operated in an uncertain and disruptive pandemic environment but to date we have successfully maintained our operational effectiveness, including the operation of financial reporting systems, internal control over financial reporting and disclosure controls and procedures. We continue to closely monitor the recent developments surrounding this pandemic and resurgences including, among other developments, local, state, national and global vaccination efforts and the potential impacts of variants.

Components of the Results of Operations

Revenues

We generate revenues from the sale of our tests, primarily from the sale of our Panorama and HCS tests. Our two primary distribution channels are our direct sales force and our laboratory partners. In cases where we promote our tests through our direct sales force, we generally bill directly to a patient, clinic or insurance carrier, or a combination of the insurance carrier and patient, for the fees.

Sales of our clinical tests are recorded as product revenues. Revenues recognized from tests processed through our Constellation model, from the Qiagen, BGI Genomics, and Foundation Medicine agreements (collectively the "Strategic Partnership Agreements") are reported in licensing and other revenues.

In cases where we sell our tests through our laboratory partners, the majority of our laboratory partners bill the patient, clinic or insurance carrier for the performance of our tests, and we are entitled to either a fixed price per test or a percentage of their collections.

Our ability to increase our revenues will depend on our ability to further penetrate the domestic and international markets and, in particular, generate sales through our direct sales force, develop and commercialize additional tests, obtain reimbursement from additional third-party payers and increase our reimbursement rate for tests performed. In particular,



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our financial performance depends on reimbursement for Panorama in the average risk population and for microdeletions. There has been a significant increase in the number of commercial third-party payers that cover the use of Panorama in the average risk population, representing approximately 95% of commercial covered lives in the United States, as well as an increasing number of state Medicaid payers expanding coverage to average risk pregnancies. Many third-party payers do not currently reimburse for microdeletions screening in part because there is currently limited published data on the performance of microdeletions screening tests. A new current procedure terminology ("CPT") code for microdeletions went into effect beginning January 1, 2017. We have experienced low average reimbursement rates thus far for microdeletions testing under this new code, and we expect that this new code will cause, at least in the near term, our microdeletions reimbursement to remain low, due to third-party payers declining to reimburse and through reduced reimbursement under the new code. This has had, and we expect it will continue to have, an adverse impact on our revenues. In addition, a new CPT code for expanded carrier screening went into effect beginning January 1, 2019, and has had, and may continue to have, an adverse effect on our reimbursement rates for our broader Horizon carrier screening panel for which we previously primarily received reimbursement on a per-condition basis, as those tests may be reimbursed as a combined single panel instead of as multiple individual tests. Because our revenues from Horizon continue to represent an increasing proportion of our overall revenues, a decline in our reimbursement rates for, and therefore our average selling price of, Horizon, could result in a decline in our overall revenue.

Our financial performance has also been impacted by the increase in in-network coverage of our tests by third-party payers, which we believe is crucial to our growth and long-term success. However, because the negotiated fees under our contracts with third-party payers are typically lower than the list price of our tests, as we enter into additional in-network contracts with insurance providers, our average reimbursement per test may decrease as compared to out-of-network contracts. While we expect the reduction in average reimbursement per test from in-network pricing to reduce our revenues and gross margins in the near term, in-network pricing is more predictable than out-of-network pricing, and we intend to continue to mitigate the impact by driving more business from our most profitable accounts.

Cost of Product Revenues

The components of our cost of product revenues are material and service costs, impairment charges associated with testing equipment, personnel costs, including stock-based compensation expense, equipment and infrastructure expenses associated with testing samples, electronic medical records, order and delivery systems, shipping charges to transport samples, costs incurred from third party test processing fees, and allocated overhead such as rent, information technology costs, equipment depreciation and utilities. Costs associated with Whole Exome Sequencing ("WES") are also included, as well as labor costs, relating to our Signatera CLIA and Signatera research use only offerings. Costs associated with performing tests are recorded when the test is accessioned. We expect cost of product revenues in absolute dollars to increase as the number of tests we perform increases.

As we continue to achieve scale, we have increased our focus on more efficient use of labor, automation, and DNA sequencing. For example, we updated the molecular and bioinformatics process for Panorama to further reduce the sequencing reagents, test steps and associated labor costs required to obtain a test result, while increasing the accuracy of the test to allow it to run with lower fetal fraction input. These improvements also reduced the frequency of the need to require blood redraws from the patient.

Cost of Licensing and Other Revenues

The components of our cost of licensing and other revenues are material costs associated with test kits sold to Constellation clients, development and support services relating to our Strategic Partnership Agreements, and costs associated with specimens and WES.

We currently have 15 revenue generating licensing and service agreements with laboratories under our Constellation distribution model. We consider our cost of licensing and other revenues for the Constellation software platform to be relatively low, and therefore we expect its associated gross margin is higher. We expect our cost of licensing will increase in relation to volume growth.



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Critical Accounting Policies

Our management's discussion and analysis of our financial condition and results of operations is based on our financial statements, which have been prepared in accordance with generally accepted accounting principles in the United States. The preparation of these financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported revenue generated, and expenses incurred during the reporting periods. Our estimates are based on our historical experience and on various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions. We consider our critical accounting policies and estimates to be revenue recognition, leases, inventory, fair value measurements, and stock-based compensation.

Recent Accounting Pronouncements

There have been no material changes to our other critical accounting policies and estimates as compared to the disclosures in our annual report on Form 10-K for the year ended December 31, 2021.

Results of Operations

Comparison of the three months ended March 31, 2022 and 2021



                                        Three Months Ended
                                            March 31,                    Change
                                        2022           2021         Amount      Percent
(in thousands except percentage)
Revenues
Product revenues                     $   190,002    $  120,384    $   69,618       57.8 %
Licensing and other revenues               4,131        31,932      (27,801)     (87.1)
Total revenues                           194,133       152,316        41,817       27.5
Cost and expenses
Cost of product revenues                 102,670        65,832        36,838       56.0
Cost of licensing and other revenues         545           981         (436)     (44.4)
Research and development                  80,414        40,188        40,226      100.1

Selling, general and administrative 147,634 108,332 39,302 36.3 Total cost and expenses

                  331,263       215,333       115,930       53.8
Loss from operations                   (137,130)      (63,017)      (74,113)      117.6
Interest expense                         (2,087)       (2,073)          (14)        0.7
Interest and other income, net               801         1,371         (570)     (41.6)
Loss before income taxes               (138,416)      (63,719)      (74,697)      117.2
Income tax expense                         (179)         (134)          (45)       33.6
Net loss                             $ (138,595)    $ (63,853)    $ (74,742)      117.1 %


Revenues

Total revenues are comprised of product revenues, which are primarily driven by sales of our Panorama and HCS tests, oncology testing, and licensing and other revenues, which primarily includes development licensing revenue and licensing of our Constellation software. Total revenues increased by $41.8 million, or 27.5%, when compared to the three months ended March 31, 2021.

We derive our revenues from tests based on units reported to customers-tests delivered with a result. All reported units are either accessioned in our laboratory or processed outside of our laboratory. As noted in the section titled "Overview" above, the number of tests that we process is a key metric as it tracks overall volume growth. During the three



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months ended March 31, 2022, total reported units were approximately 456,100, comprised of approximately 440,900 tests reported in our laboratory. Comparatively, during the three months ended March 31, 2021, total reported units were approximately 313,800, comprising of approximately 300,000 tests reported in our laboratory.

Product Revenues

During the three months ended March 31, 2022, product revenues increased by $69.6 million, or 57.8% compared to the three months ended March 31, 2021, as a result of the continued revenue growth from test volumes.

Licensing and Other Revenues

Licensing and other revenues decreased by $27.8 million, or 87.1%, during the three months ended March 31, 2022 when compared to the three months ended March 31, 2021. The decrease in revenue was primarily due to $28.6 million of revenue recognized from Qiagen associated with deferred revenues recognized as a result from a settlement with Qiagen in prior year partially offset by a $0.8 million increase in revenue from our collaborative agreements.

Cost of Product Revenues

During the three months ended March 31, 2022, cost of product revenues increased compared to the three months ended March 31, 2021 by approximately $36.8 million, or 56.0%, due to a $15.7 million increase in third-party fees, higher costs related to inventory consumption of $2.4 million driven by an increase in accessioned tests, a $2.5 million increase in shipping related charges, and a $16.2 million increase in labor and overhead costs driven by headcount growth and product support.

Cost of Licensing and Other Revenues

Cost of licensing and other revenues for the three months ended March 31, 2022, when compared to the three months ended March 31, 2021, decreased by $0.4 million, or 44.4%, primarily due to labor efficiencies from our collaborative agreements.

Research and Development

Research and development expenses during the three months ended March 31, 2022, increased by $40.2 million, or 100.1%, when compared to the three months ended March 31, 2021. The increase was driven by a $18.3 million increase in salary and related compensation expenditures primarily due to headcount growth, which includes a $5.5 million increase in stock-based compensation expense. Additionally, there was an increase of $2.3 million of consulting costs, a $15.8 million increase of costs related to clinical studies to support our new product offerings and future commercialization of our products, and a $3.8 million increase in facilities, software, office and other costs.

Selling, General and Administrative

Selling, general and administrative expenses increased by $39.3 million, or 36.3%, during the three months ended March 31, 2022 compared to the three months ended March 31, 2021. The increase was attributable to an increase of $22.3 million in salary and related compensation expenditures primarily due to headcount growth, which includes a $5.3 million increase in stock-based compensation expense. Additionally, there was a $1.8 million increase in marketing expenses, a $3.7 million increase in travel related costs, a $5.4 million increase in consulting and legal fees, a $2.2 million increase in hardware and software licenses, and a $3.9 million increase from business insurance and other administrative costs.

Interest Expense

Interest expense remained flat in the three months ended March 31, 2022 compared to the same period in the prior year. The interest expense is primarily from the Convertible Notes issued in April 2020.



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Interest and Other Income

Interest and other income for the three months ended March 31, 2022 decreased $0.6 million compared to the same period in the prior year, primarily due to the sale and maturities of investments resulting in lower interest income as well as lower yields from our investments.

Liquidity and Capital Resources

We have incurred net losses each year since our inception. For the three months ended March 31, 2022, we had a net loss of $138.6 million, and we expect to continue to incur losses in future periods as we continue to devote a substantial portion of our resources to our research and development and commercialization efforts for our existing and new products. As of March 31, 2022, we had an accumulated deficit of $1.5 billion. We had $158.5 million in cash and cash equivalents and restricted cash, $593.7 million in marketable securities, $50.1 million of outstanding balance of the Credit Line including accrued interest, and $287.5 million outstanding principal balance on the Convertible Notes.

While we have introduced multiple products that are generating revenues, these revenues have not been sufficient to fund all operations. Accordingly, we have funded the portion of operating costs that exceeds revenues through a combination of equity issuances and debt and other financings. We expect to develop and commercialize future products and continue to invest in the growth of our business and, consequently, we will need to generate additional revenues to achieve future profitability and may need to raise additional equity or incur additional debt. If we raise additional funds by issuing equity securities, our stockholders would experience dilution. Additional debt financing, if available, may involve covenants restricting our operations or our ability to incur additional debt. Any additional debt financing or additional equity that we raise may contain terms that are not favorable to us or our stockholders and requires significant debt service payments, which diverts resources from other activities. Additional financing may not be available at all, or in amounts or on terms acceptable to us. If we are unable to obtain additional financing, we may be required to delay the development and commercialization of our products and significantly scale back our business and operations.

In July 2021, the Company completed an underwritten equity offering and sold 5,175,000 shares of its common stock at a price of $113 per share to the public. Before offering expenses of $0.4 million, the Company received proceeds of $551.2 million net of the underwriting discount.

Refer to additional disclosures associated with risks and our ability to generate and obtain adequate amounts of cash to meet capital requirements for both short-term and long-term obligations.

Based on our current business plan, we believe that our existing cash and marketable securities will be sufficient to meet our anticipated cash requirements for at least 12 months after May 6, 2022.

Credit Line Agreement

In September 2015, we entered into the Credit Line with UBS providing for a $50.0 million revolving line of credit which can be drawn in increments at any time. The Credit Line was amended in July 2017 and bears interest at 30-day LIBOR plus 1.10%, and it is secured by a first priority lien and security interest in our money market and marketable securities held in our managed investment account with UBS. UBS has the right to demand full or partial payment of the Credit Line obligations and terminate it, in its discretion and without cause, at any time. As of March 31, 2022, the total principal amount outstanding with accrued interest was $50.1 million.

Convertible Notes

In April 2020, we issued $287.5 million aggregate principal amount of Convertible Notes in a private placement offering to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended.

The Convertible Notes are senior, unsecured obligations of the Company and bear interest at a rate of 2.25% per year, payable in cash semi-annually in arrears in May and November of each year, beginning in November 2020. The



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Convertible Notes mature in May 2027, unless earlier converted, repurchased or redeemed in accordance with their terms. Upon conversion, the Convertible Notes are convertible into cash, shares of our common stock or a combination of cash and shares of our common stock, at our election.

We received net proceeds from the Convertible Notes of $278.3 million, after deducting the initial purchasers' discounts and debt issuance costs. We used approximately $79.2 million of the net proceeds from the Convertible Notes offering to repay our obligations under the 2017 Term Loan with OrbiMed.

Cash Flows



The following table summarizes our condensed consolidated cash flows for the
periods indicated:

                                                            Three Months Ended
                                                                March 31,
                                                            2022            2021
(in thousands)
Cash used in operating activities                       $   (137,277)    $ (74,876)
Cash provided by investing activities                         207,033        86,740
Cash provided by financing activities                           4,156         4,570
Net increase in cash, cash equivalents and
restricted cash                                                73,912        16,434
Cash, cash equivalents and restricted cash,
beginning of period                                            84,614        48,855

Cash, cash equivalents and restricted cash, end of period

$     158,526    $   65,289

Cash Used in Operating Activities

Cash used in operating activities during the three months ended March 31, 2022 was $137.3 million. The net loss of $138.6 million includes $43.7 million in non-cash charges resulting from $3.0 million of depreciation and amortization, $1.8 million premium amortization and discount accretion on investment securities, $35.1 million of stock-based compensation expense, $3.3 million of non-cash lease expense, $0.3 million for amortization of debt discount and issuance cost, $0.1 million of inventory reserve adjustments, $0.3 million of provision for credit losses, $0.1 million for amortization of other assets offset by $0.3 million unrealized losses on investment securities. Operating assets had cash outflows of $50.8 million resulting from a $46.1 million increase in accounts receivable, a $6.3 million increase in prepaid expenses and other assets offset by a $1.7 million decrease in inventory. Operating liabilities resulted in cash inflows of $8.3 million resulting from a $21.3 million increase in other accrued liabilities, and a $5.7 million increase in deferred revenue offset by a $7.5 million decrease in accounts payable, $8.5 million decrease in accrued compensation, and a $2.7 million decrease in lease liabilities.

Cash used in operating activities during the three months ended March 31, 2021 was $74.9 million. The net loss of $63.9 million includes $31.2 million in non-cash charges resulting from $2.5 million of depreciation and amortization, $2.1 million premium amortization and discount accretion on investment securities, $23.2 million of stock-based compensation expense, $2.7 million of non-cash lease expense, $0.3 million of inventory reserve adjustments, $0.3 million for amortization of debt discount and issuance cost, and $0.1 million of other non-cash charges. Operating assets had cash outflows of $10.5 million resulting from $9.0 million in increases in accounts receivable and $4.0 million in increases in inventory, offset by a decrease of $2.5 million from prepaid expenses and other current assets. Operating liabilities generated cash outflows of $31.7 million resulting from a $3.3 million decrease in accounts payable, a $4.5 million decrease in accrued compensation, a $2.5 million decrease in operating lease liabilities, and $40.0 million decrease in deferred revenue, offset by a $18.6 million increase in other accrued liabilities.



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Cash Used in Investing Activities

Cash provided by investing activities for the three months ended March 31, 2022 totaled $207.0 million, which was comprised of $166.9 million from proceeds from sale of investments, $81.0 million from proceeds of investments maturities, offset by $25.0 million in purchasing of new investments, and $15.8 million in acquisitions of property, plant and equipment.

Cash provided by investing activities for the three months ended March 31, 2021 totaled $86.7 million, which was comprised of $140 million from proceeds from investment maturities, which was offset by $43.0 million in purchasing of new investments and $10.3 million in acquisitions of property, plant and equipment.

Cash Provided by Financing Activities

Cash provided by financing activities for the three months ended March 31, 2022, totaled $4.2 million of proceeds from the exercise of stock options.

Cash provided by financing activities for the three months ended March 31, 2021 totaled $4.6 million of proceeds from the exercise of stock options.

Contractual Obligations and Other Commitments

We have entered into arrangements that contractually obligate us to make payments that will affect our liquidity and cash flows in future periods. Such arrangements include those related to our lease commitments, Credit Line, Convertible Notes, commercial supply agreements and other agreements.

Operating leases

Our lease commitments consist of $19.4 million of payments, which will be paid over the term of the lease, consisting of the "Second Expansion Premises" from the lease amendment for the laboratory and office space in Austin, Texas. The lease for the Second Premises has not commenced under Accounting Standards Codification (ASC) Topic 842, Leases (ASC 842), as of March 31, 2022. As a result, the lease is not reflected within the consolidated balance sheets. We expect the leases to commence in September 2022 and expire in March 2033. For additional information on our leases and timing of future payments, please refer to Note 7, Leases.

Credit Line

The short-term debt obligations consist of the $49.0 million principal amount drawn from the UBS Credit Line and applicable interest. The Credit Line was amended in July 2017 and bears interest at 30-day LIBOR plus 1.10%, and it is secured by a first priority lien and security interest in our money market and marketable securities held in our managed investment account with UBS. UBS has the right to demand full or partial payment of the Credit Line obligations and terminate it, in its discretion and without cause, at any time. Please refer to Note 10, Debt, for further details.

Convertible Notes

The long-term debt obligations consist of the $287.5 million principal amount from a private placement offering to qualified institutional buyers and applicable interest. The Convertible Notes are senior, unsecured obligations of the Company and bear interest at a rate of 2.25% per year, payable in cash semi-annually in arrears in May and November of each year, beginning in November 2020. The Convertible Notes mature in May 2027, unless earlier converted, repurchased or redeemed in accordance with their terms. Upon conversion, the Convertible Notes are convertible into cash, shares of our common stock or a combination of cash and shares of our common stock, at our election. Please refer to Note 10, Debt, for further details.



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Inventory purchase and other contractual obligations

We enter into contracts in the normal course of business with various third parties for clinical trials, preclinical research studies, testing, manufacturing, and other services for operational purposes. The contractual obligations also include a $35.0 million potential earnout payment from our IPR&D asset acquisition. Payments due upon cancellation generally consist only of payments for services provided or expenses incurred, including non-cancellable obligations of our service providers, up to the date of cancellation. These payments have not been included separately within these contractual and other obligations disclosures. Please refer to Note 8, Commitments and Contingencies, for further details.

Off-Balance Sheet Arrangements

We do not have any off-balance sheet arrangements during the periods presented.

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