Adaptive Biotechnologies Corp (ADPT) FY 2022 MD&A

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

You should read the following discussion and analysis of our financial condition and results of operations together with our consolidated financial statements and related notes and the other financial information appearing elsewhere in this Annual Report on Form 10-K, as well as the other financial information we file with the Securities and Exchange Commission ("SEC") from time to time. Some of the information contained in this discussion and analysis or set forth elsewhere in this report, including information with respect to our plans and strategy for our business and related financing, includes forward-looking statements that involve risks and uncertainties relating to our future plans, objectives, expectations, intentions and financial performance and the assumptions that underlie these statements. As a result of many factors, including those factors set forth in the “Risk Factors” section of this Annual Report on Form 10-K, our actual results could differ materially from the results described in or implied by the forward-looking statements contained in the following discussion and analysis.

This section generally discusses 2022 and 2021 items and year-to-year comparisons between 2022 and 2021. Discussions of 2020 items and year-to-year comparisons between 2021 and 2020 may be found in Part II, Item 7 under the caption "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, 2021 filed with the SEC on February 15, 2022.

Overview

We are advancing the field of immune medicine by harnessing the inherent biology of the adaptive immune system to transform the diagnosis and treatment of disease. We believe the adaptive immune system is nature’s most finely tuned diagnostic and therapeutic for most diseases, but the inability to decode it has prevented the medical community from fully leveraging its capabilities. Our immune medicine platform applies our proprietary technologies to read the diverse genetic code of a patient’s immune system and aims to understand precisely how the immune system detects and treats disease in that patient. We capture these insights in our dynamic clinical immunomics database, which is underpinned by computational biology and machine learning, and use them to develop and commercialize clinical products and services that we are tailoring to each individual patient. We have commercial products and services and a robust pipeline of clinical products and services that we are designing to diagnose, monitor and enable the treatment of diseases, such as cancer and autoimmune disorders. Our existing and future commercial products and services are aligned to two markets which we refer to as MRD and Immune Medicine.

Our current product and service offerings in MRD related to the MRD market are our clonoSEQ clinical diagnostic test, offered to clinicians, and our clonoSEQ or MRD assay, offered to biopharmaceutical partners to advance drug development efforts (“MRD Pharma”). Our first clinical diagnostic product, clonoSEQ, is the first test authorized by the Food and Drug Administration for the detection and monitoring of minimal residual disease (“MRD”) in patients with multiple myeloma, B cell acute lymphoblastic leukemia and chronic lymphocytic leukemia, and is also available as a CLIA-validated laboratory developed test for patients with other lymphoid cancers, including diffuse large B-cell lymphoma. With the use of clonoSEQ, we are transforming how lymphoid cancers are treated by working with providers, pharmaceutical partners and payors.

Immune Medicine leverages our platform’s proprietary ability to sequence, map, pair and characterize TCRs and BCRs at scale to drive opportunities in cancer, autoimmune disorders, infectious diseases and neurodegenerative disorders. The cornerstone of our platform and core immunosequencing product, immunoSEQ, serves as our underlying research and development engine and generates revenue from biopharmaceutical and academic customers. Leveraging our collaboration with Microsoft Corporation, we are creating the TCR-Antigen Map. We are using the TCR-Antigen Map to identify and validate disease signatures to improve the diagnosis and treatment of many diseases. We are focused on expanding and growing our revenue and offerings in two areas of growth: IM Pharma Services and Drug Discovery. In IM Pharma Services, we deliver rich TCR and BCR sequencing data back to our biopharmaceutical and academic customers. These data inform biomarkers of drug response with the ability to accelerate our customers’ clinical development programs in four major therapeutic areas. In Drug Discovery, we use our proprietary capabilities to discover new drug targets and leverage our validated TCR and BCR discovery approaches to discover and develop TCR or antibody therapeutic assets. Drug Discovery includes the Genentech Agreement. Part of our strategy within Immune Medicine is to develop a diagnostic test for many diseases from a single blood test, known as T-Detect. In 2022, we decided to defer further commercialization of T-Detect until we have strong enough data in multiple disease states to impact physician behavior with a clear path to reimbursement.

We recognized revenue of $185.3 million and $154.3 million for the year ended December 31, 2022 and 2021, respectively. Net loss attributable to Adaptive Biotechnologies Corporation was $200.2 million and $207.3 million for the year ended December 31, 2022 and 2021, respectively. We have funded our operations to date principally from the sale of convertible preferred stock and common stock and, to a lesser extent, revenue and proceeds from the revenue interest purchase agreement. As of December 31, 2022 and 2021, we had cash, cash equivalents and marketable securities of $498.2 million and $570.2 million, respectively.

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Revenue Interest Purchase Agreement

In September 2022, we entered into the Purchase Agreement with OrbiMed. Pursuant to the Purchase Agreement, we received $125.0 million from the Purchasers at closing, less certain transaction expenses. We will also be entitled to receive up to $125.0 million in subsequent installments as follows: (i) $75.0 million upon our request occurring no later than September 12, 2025 and (ii) $50.0 million upon our request in connection with certain permitted acquisitions occurring no later than September 12, 2025, in each case subject to certain funding conditions.

As consideration for such payments, the Purchasers will have a right to receive Revenue Interests from us based on the Applicable Payment Percentage of the Revenue Base. If only the First Payment has been made, the Applicable Payment Percentage shall be five percent of the quarterly Revenue Base. If both the First Payment and Second Payment have been made, the Applicable Payment Percentage shall be eight percent of the quarterly Revenue Base. If each of the First Payment, Second Payment and Third Payment have been made, the applicable payment percentage applied to the Revenue Interest shall be ten percent of the quarterly Revenue Base.

Revenue Interest Payments shall be made quarterly within 45 days following the end of each fiscal quarter. If OrbiMed has not received Revenue Interest Payments in the aggregate equal to or greater than the sum of its invested capital on or prior to September 12, 2028, the revenue interest rate shall be increased to a rate which, if applied retroactively to our cumulative Revenue Base, would have resulted in Revenue Interest Payments equal to the sum of all Cumulative Purchaser Payments.

OrbiMed will be entitled to 100% of the Revenue Interest Payments until it has received a total cumulative value of 165% of the Cumulative Purchaser Payments, unless full repayment of the amount of the Return Cap has not been made by September 12, 2032, in which case the Return Cap shall be increased to 175% of the Cumulative Purchaser Payments.

In addition, the Purchase Agreement contains various representations and warranties, information rights, non-financial covenants, indemnification obligations and other provisions that are customary for a transaction of this nature.

Reduction in Workforce

In March 2022, we began implementing a restructuring plan to reduce operating costs and drive future growth aligned with the strategic reorganization of our business around our MRD and Immune Medicine market opportunities. Under this restructuring plan, we reduced our workforce by approximately 100 employees.

We incurred aggregate restructuring costs of $2.0 million, all of which was recognized during the year ended December 31, 2022. These costs primarily related to one-time termination benefits and ongoing benefit arrangements, both of which included severance payments and extended benefits coverage support and were contingent upon the impacted employees’ execution and non-revocation of separation agreements. Our aggregate restructuring costs also included certain contract termination costs.

The activities related to our reduction in workforce were primarily completed in March 2022 and the $2.0 million aggregate restructuring costs were paid as of December 31, 2022.

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Revenue Reclassification and clonoSEQ Test Volume

We previously disclosed revenue bifurcated into sequencing and development financial statement captions. In 2022, we changed how we classify revenue and now present total revenue on our consolidated statements of operations included elsewhere in this Annual Report on Form 10-K. We disaggregate revenue under our Immune Medicine and MRD market opportunities in Note 3 of the accompanying notes to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K.

The following tables present the amount of sequencing revenue and development revenue recognized under our Immune Medicine and MRD market opportunities for the periods presented (in thousands):

We also previously disclosed the number of clonoSEQ reports provided to ordering physicians in the United States, referred to as “clinical sequencing volume” or “clinical sequencing volume, excluding T-Detect COVID volume” in the “Management’s Discussion and Analysis of Financial Condition and Results of Operations” section of certain of our SEC filings. In 2022, we changed our disclosures related to volume metrics and now present the number of clonoSEQ reports and results we have provided to ordering physicians in the United States and international technology transfer sites, collectively referred to as “clonoSEQ test volume.” Our clonoSEQ test volume does not include sample results from our biopharmaceutical customers or academic institutions utilizing our MRD services.

The following tables present our clonoSEQ test volume for the periods presented:

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Components of Results of Operations

Revenue

We derive revenue by providing diagnostic and research services in our Immune Medicine and MRD market opportunities. Our Immune Medicine revenue consists of revenue generated from (1) providing sample testing services for our commercial research product, immunoSEQ, to biopharmaceutical customers and academic institutions; (2) providing our T-Detect COVID tests to clinical customers; and (3) our collaboration agreements with Genentech and other biopharmaceutical customers in areas of drug and target discovery. Our MRD revenue consists of revenue generated from (1) providing our clonoSEQ report to clinical customers; (2) providing MRD sample testing services to biopharmaceutical customers and certain academic institutions, including investigator-led clinical trials; and (3) providing our clonoSEQ report or results to certain international laboratory sites through technology transfers. We disclose our clonoSEQ test volume, which includes the number of clonoSEQ reports and results we have provided to ordering physicians in the United States and international technology transfer sites. These volumes do not include sample results from our biopharmaceutical customers or academic institutions utilizing our MRD services.

For our research customers, which include biopharmaceutical customers and academic institutions for both our immunoSEQ and MRD services, delivery of the respective test results may include some level of professional support and analysis. Terms with biopharmaceutical customers generally include non-refundable payments made in advance of services ("upfront payments"), which we record as deferred revenue. For all research customers, we recognize revenue as we deliver sequencing results. From time to time, we offer discounts in order to gain rights and access to certain datasets. Revenue is recognized net of these discounts and costs associated with these services are reflected in cost of revenue. In periods where our sample estimates are reduced or a customer project is cancelled and, in either case, we have remaining related deferred revenue, we recognize revenue using a cumulative catch-up approach based on the proportion of samples delivered to date relative to the remaining samples expected to be delivered. Certain of our MRD revenue arrangements with biopharmaceutical customers include consideration in the form of regulatory milestones upon regulatory approval of the respective biopharmaceutical partners’ therapeutics. Such revenue is constrained from recognition until it becomes probable that such milestone will be achieved.

Under certain agreements with our biopharmaceutical customers who seek access to our platform to support their therapeutic development activities, revenues are generated from research and development support services that we provide. These agreements may include substantial non-refundable upfront payments, which we recognize over time as we perform the respective services. Revenue recognized from these activities relate primarily to the Genentech Agreement.

For our clinical customers, we primarily derive revenue from providing our clonoSEQ report to ordering physicians. We bill commercial, government and medical institution payors based on reports delivered to ordering physicians. Amounts paid for clonoSEQ by commercial, government and medical institution payors vary based on respective reimbursement rates and patient responsibilities, which may differ from our targeted list price. We recognize clinical revenue by evaluating customer payment history, contracted reimbursement rates, if applicable, and other adjustments to estimate the amount of revenue that is collectible.

For our clonoSEQ coverage under Medicare, we bill an episode of treatment when we deliver the first eligible test report. This billing contemplates all necessary tests required during a patient’s treatment cycle, which is currently estimated at approximately four tests per patient, including the initial sequence identification test. Revenue recognition commences at the time the initial billable test report is delivered and is based upon cumulative tests delivered to date. Any unrecognized revenue from the initial billable test is recorded as deferred revenue and recognized either as we deliver our estimate of the remaining tests in a patient’s treatment cycle or when the likelihood becomes remote that a patient will receive additional testing.

We expect revenue to increase over the long term. Our revenue may fluctuate from period to period due to the uncertain nature of delivery of our products and services, the achievement of milestones by our customers, timing of expenses incurred, changes in estimates of total anticipated costs related to the Genentech Agreement and other events not within our control, such as the delivery of customer samples or customer decisions to no longer pursue their development initiatives.

Cost of Revenue

Cost of revenue includes the cost of materials, personnel-related expenses (including salaries, benefits and share-based compensation), shipping and handling expenses, equipment costs, allocated facility costs associated with processing samples and professional support costs related to our service revenue activities. Allocated facility costs include depreciation of laboratory equipment, as well as allocated facility occupancy and information technology costs. Costs associated with processing samples are recorded as expense, regardless of the timing of revenue recognition. As such, cost of revenue and related volume does not always trend in the same direction as revenue recognition and related volume. Additionally, costs to support the Genentech Agreement are a component of our research and development expenses.

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We expect cost of revenue to increase in absolute dollars as we grow our sample testing volume and make investments in laboratory consolidation and facilities, but the cost per sample to decrease over the long term due to the efficiencies we may gain as assay volume increases from improved utilization of our laboratory capacity, automation and other value engineering initiatives. If our sample volume throughput is reduced, cost of revenue as a percentage of total revenue may be adversely impacted due to fixed overhead costs.

Research and Development Expenses

Research and development expenses consist of laboratory materials costs, personnel-related expenses (including salaries, benefits and share-based compensation), equipment costs, allocated facility costs, information technology expenses and contract service expenses. Research and development activities support further development and refinement of existing assays and products, discovery of new technologies and investments in our immune medicine platform. We also include in research and development expenses the costs associated with software development of applications to support future commercial opportunities, as well as development activities to support laboratory scaling and workflow. We are currently conducting research and development activities for several products and services and we typically use our laboratory materials, personnel, facilities, information technology and other development resources across multiple development programs. Additionally, certain of these research and development activities benefit more than one of our product opportunities. We have not historically tracked research and development expenses by specific product candidates.

A component of our research and development expenses are costs supporting clinical and analytical validations to obtain regulatory approval for future clinical products and services. Additionally, the costs to support the Genentech Agreement are a component of our research and development expenses. Some of these activities have generated and may in the future generate revenue.

We expect research and development expenses to experience decreases in the short term and to decrease as a percentage of revenue in the long term, although the percentage may fluctuate from period to period due to the timing and extent of our development and commercialization efforts.

Sales and Marketing Expenses

Sales and marketing expenses include personnel-related expenses (including salaries, benefits and share-based compensation) for commercial sales, product and account management, marketing, reimbursement, medical education and business development personnel that support commercialization of our platform products. In addition, these expenses include external costs such as advertising expenses, customer education and promotional expenses, market analysis expenses, conference fees, travel expenses and allocated facility costs.

We expect sales and marketing expenses to remain relatively consistent in the short term. In the long term, we expect sales and marketing expenses to increase in absolute dollars as we increase marketing activities to drive awareness and adoption of our products and services. However, we expect sales and marketing expenses to decrease as a percentage of revenue in the long term, subject to fluctuations from period to period due to the timing and magnitude of these expenses.

General and Administrative Expenses

General and administrative expenses include personnel-related expenses (including salaries, benefits and share-based compensation) for our personnel in executive, legal, finance and accounting, human resources and other administrative functions, including third-party clinical billing services. In addition, these expenses include insurance costs, external legal costs, accounting and tax service expenses, consulting fees and allocated facility costs.

We expect general and administrative expenses to remain relatively consistent in the short term and to decrease as a percentage of revenue in the long term.

Interest Expense

Interest expense includes costs associated with our revenue interest liability and noncash interest costs associated with the amortization of the related deferred issuance costs. We impute the related interest expense using the effective interest rate method. We calculate an effective interest rate which will amortize our related obligation to zero over the anticipated repayment period. A significant increase or decrease in or changes in timing of forecasted revenue will prospectively impact our interest expense.

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Statements of Operations Data and Other Financial and Operating Data

The following table sets forth our statements of operations data and other financial and operating data for the periods presented (in thousands, except share and per share amounts):

(1) Adjusted EBITDA is a non-GAAP financial measure that we define as net loss attributable to Adaptive Biotechnologies Corporation adjusted for interest and other income, net, interest expense, income tax (expense) benefit, depreciation and amortization expense, restructuring expense and share-based compensation expense. Please refer to “Adjusted EBITDA” below for a reconciliation between Adjusted EBITDA and net loss attributable to Adaptive Biotechnologies Corporation, the most directly comparable GAAP financial measure, and a discussion about the limitations of Adjusted EBITDA.

Comparison of the Years Ended December 31, 2022 and 2021

Revenue

The $10.0 million increase in Immune Medicine revenue was primarily due to a $13.6 million increase in revenue generated from our biopharmaceutical and academic customers and a $0.8 million increase in revenue generated from the Genentech Agreement due to increased collaboration expenses, which were partially offset by a $4.4 million decrease in revenue generated from our T-Detect COVID clinical customers largely related to our decision to defer commercialization of T-Detect COVID.

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The $20.9 million increase in MRD revenue was primarily due to a $15.8 million increase in revenue generated from providing our clonoSEQ report to clinical customers and a $10.1 million increase in revenue generated from providing MRD sample testing services to biopharmaceutical customers. These increases were partially offset by a $4.0 million decrease in revenue recognized upon the achievement of certain regulatory milestones by our biopharmaceutical customers' therapeutics and a $1.3 million decrease in revenue generated from providing MRD sample testing services to investigator-led clinical trials. Our clonoSEQ test volume increased by 51% to 36,871 tests delivered in the year ended December 31, 2022 from 24,388 tests delivered in the year ended December 31, 2021.

Cost of Revenue

The $8.6 million increase in cost of revenue was primarily attributable to a $6.0 million increase in labor, overhead and facility costs, a $2.4 million increase in cost of materials related to mix to higher cost assays and a $2.0 million increase related to higher usage of our production laboratory to process revenue samples versus research and development samples. These increases were partially offset by a $1.3 million decrease in certain sample collection costs and a $0.5 million decrease in materials cost, both of which were driven primarily by decreased T-Detect sample volume largely related to our decision to defer commercialization of T-Detect COVID.

Research and Development

The following table presents disaggregated research and development expenses by cost classification for the periods presented:

The $0.6 million decrease in research and development expenses was primarily attributable to a $7.9 million decrease in cost of materials and allocated production laboratory expenses, which was driven primarily by decreased investments in T-Detect and TCR-Antigen Map development activities, drug discovery and clonoSEQ. This decrease was partially offset by a $5.3 million increase in personnel costs, of which $0.7 million related to our restructuring activities, and a $2.5 million increase in allocable facility expenses. A $1.8 million increase in depreciation expense and a $1.3 million decrease in collaboration and medical advisory costs were the primary drivers of the change in depreciation and other expenses.

Sales and Marketing

The modest increase in sales and marketing expenses was primarily attributable to $6.8 million in additional personnel costs, of which $0.9 million related to our restructuring activities, as well as a $1.4 million increase in travel and customer event related expenses. These increases were partially offset by an $8.0 million decrease in marketing expenses driven primarily by reduced clonoSEQ, T-Detect and corporate marketing activities.

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General and Administrative

The $14.0 million increase in general and administrative expenses was primarily attributable to a $7.2 million increase in building, facility and depreciation related expenses, a $5.0 million increase in personnel costs and a $2.8 million increase in computer and software expenses. These increases were partially offset by a $1.3 million decrease in accounting and legal fees.

Interest and Other Income, Net

The $2.4 million increase in interest and other income, net was primarily attributable to an increase in net interest income and investment amortization resulting primarily from increased interest rates and related yields of our invested cash and cash equivalents and marketable securities.

Interest Expense

The $4.2 million increase in interest expense was attributable to the Purchase Agreement entered into during the year ended December 31, 2022.

Adjusted EBITDA

Adjusted EBITDA is a non-GAAP financial measure that we define as net loss attributable to Adaptive Biotechnologies Corporation adjusted for interest and other income, net, interest expense, income tax (expense) benefit, depreciation and amortization expense, restructuring expense and share-based compensation expense.

Management uses Adjusted EBITDA to evaluate the financial performance of our business and the effectiveness of our business strategies. We present Adjusted EBITDA because we believe it is frequently used by analysts, investors and other interested parties to evaluate companies in our industry and it facilitates comparisons on a consistent basis across reporting periods. Further, we believe it is helpful in highlighting trends in our operating results because it excludes items that are not indicative of our core operating performance.

Adjusted EBITDA has limitations as an analytical tool and you should not consider it in isolation or as a substitute for analysis of our results as reported under GAAP. We may in the future incur expenses similar to the adjustments in the presentation of Adjusted EBITDA. In particular, we expect to incur meaningful share-based compensation expense in the future. Other limitations include that Adjusted EBITDA does not reflect:

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all expenditures or future requirements for capital expenditures or contractual commitments;

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changes in our working capital needs;

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interest expense, which is an ongoing element of our costs to operate;

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income tax (expense) benefit, which may be a necessary element of our costs and ability to operate;

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the costs of replacing the assets being depreciated and amortized, which will often have to be replaced in the future;

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the noncash component of employee compensation expense; and

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the impact of earnings or charges resulting from matters we consider not to be reflective, on a recurring basis, of our ongoing operations, such as our March 2022 restructuring and reduction in workforce.

In addition, Adjusted EBITDA may not be comparable to similarly titled measures used by other companies in our industry or across different industries.

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The following is a reconciliation of net loss attributable to Adaptive Biotechnologies Corporation, the most directly comparable GAAP financial measure, to Adjusted EBITDA for the periods presented (in thousands):

(1) Represents costs associated with our revenue interest liability and noncash interest costs associated with the amortization of the related deferred issuance costs. See Note 11 of the accompanying notes to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K for details on the Purchase Agreement.

(2) Represents expenses recognized in conjunction with restructuring activities. See Note 16 of the accompanying notes to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K for details on our restructuring expense.

(3) Represents share-based compensation expense related to stock option, restricted stock unit and market-based restricted stock unit awards. See Note 14 of the accompanying notes to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K for details on our share-based compensation expense.

Liquidity and Capital Resources

We have incurred losses since inception and have incurred negative cash flows from operations since inception through December 31, 2018, and again in the years ended December 31, 2020, 2021 and 2022. As of December 31, 2022, we had an accumulated deficit of $919.1 million.

We have funded our operations to date principally from the sale of convertible preferred stock and common stock, and, to a lesser extent, revenue and proceeds from the Purchase Agreement. Pursuant to the Purchase Agreement entered into with OrbiMed in September 2022, we received net cash proceeds of $124.4 million, after deducting issuance costs. We will also be entitled to receive up to $125.0 million in subsequent installments as follows: (i) $75.0 million upon our request occurring no later than September 12, 2025 and (ii) $50.0 million upon our request in connection with certain permitted acquisitions occurring no later than September 12, 2025, in each case subject to certain funding conditions. As of December 31, 2022, we had cash, cash equivalents and marketable securities of $498.2 million.

We believe our existing cash, cash equivalents and marketable securities will be sufficient to fund our operating expenses and capital expenditure requirements through at least the next 12 months. We may consider raising additional capital to expand our business, to pursue strategic investments, to take advantage of financing opportunities or for other reasons.

If our available cash, cash equivalents and marketable securities balances and anticipated cash flows from operations are insufficient to satisfy our liquidity requirements, we may seek to sell additional 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 shareholders 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. This additional capital may not be available on reasonable terms, or at all.

We plan to utilize the existing cash, cash equivalents and marketable securities on hand primarily to fund our continued research and development initiatives for our drug discovery initiatives, our ongoing investments in our immune medicine platform, our commercial and marketing activities associated with our clinical products and services and our continued investments in streamlining our laboratory operations. Cash in excess of immediate requirements is invested in accordance with our investment policy, primarily with a view to capital preservation and liquidity. Currently, our funds are held in money market funds and marketable securities consisting of United States government debt securities, corporate bonds and commercial paper.

While we may experience variability in revenue in the near term, as long-term revenue from sales of our current and future products and services is expected to grow, 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.

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Contractual Obligations

Our contractual obligations as of December 31, 2022 include operating lease obligations of $135.3 million, reflecting the minimum commitments for our office and laboratory spaces in Seattle, Washington and South San Francisco, California, our warehouse lease in Bothell, Washington and our office lease in New York City, New York. See Note 10 of the accompanying notes to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K for more information, including the timing of cash payments related to these lease obligations. In connection with one of our lease agreements, we have an existing letter of credit of $2.1 million with one of our existing financial institutions.

Additionally, pursuant to the Purchase Agreement, the Purchasers will have a right to receive Revenue Interests from us based on the Applicable Payment Percentage of the Revenue Base. If only the First Payment has been made, the Applicable Payment Percentage shall be five percent of the quarterly Revenue Base. If both the First Payment and Second Payment have been made, the Applicable Payment Percentage shall be eight percent of the quarterly Revenue Base. If each of the First Payment, Second Payment and Third Payment have been made, the applicable payment percentage applied to the Revenue Interest shall be ten percent of the quarterly Revenue Base. Revenue Interest Payments shall be made quarterly within 45 days following the end of each fiscal quarter. If OrbiMed has not received Revenue Interest Payments in the aggregate equal to or greater than the Cumulative Purchaser Payments on or prior to September 12, 2028, the revenue interest rate shall be increased to a rate which, if applied retroactively to our cumulative Revenue Base, would have resulted in Revenue Interest Payments equal to the sum of all Cumulative Purchaser Payments. OrbiMed will be entitled to 100% of the Revenue Interest Payments until it has received the Return Cap, unless full repayment of the amount of the Return Cap has not been made by September 12, 2032, in which case the Return Cap shall be increased to 175% of the Cumulative Purchaser Payments. As projected revenues change from our initial estimates, the amount of the obligation and timing of payment is likely to change. See Note 11 of the accompanying notes to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K for more information.

We also have minimum commitments for laboratory material suppliers, which are generally fulfilled within one year, software and service license commitments, which are generally fulfilled within one to three years, and royalty commitments.

Cash Flows

The following table summarizes our uses and sources of cash for the years ended December 31, 2022 and 2021 (in thousands):

Operating Activities

Cash used in operating activities during the year ended December 31, 2022 was $183.9 million, which was primarily attributable to a net loss of $200.4 million and a net change in our operating assets and liabilities of $71.5 million, partially offset by noncash share-based compensation of $55.5 million, noncash depreciation and amortization of $21.7 million, noncash lease expense of $7.2 million, a research and development inventory reserve charge of $2.6 million and noncash interest expense related to the Purchase Agreement of $1.0 million. The net change in our operating assets and liabilities was primarily due to a $56.5 million reduction in deferred revenue driven largely by revenue recognized from the Genentech Agreement, an increase in accounts receivable, net of $22.6 million, $7.1 million of which was attributed to growth in receivables related to clonoSEQ with the remaining increase driven largely by growth in receivables from biopharmaceutical customers, and a $4.1 million decrease in operating lease right-of-use assets and liabilities. These changes were partially offset by a $7.1 million increase in accounts payable and accrued liabilities, a $3.6 million decrease in prepaid expenses and other current assets and a $0.8 million decrease in inventory.

Cash used in operating activities during the year ended December 31, 2021 was $192.7 million, which was primarily attributable to a net loss of $207.3 million and a net change in operating assets and liabilities of $56.8 million, partially offset by noncash share-based compensation of $43.3 million, noncash depreciation and amortization of $21.2 million and noncash lease expense of $7.0 million. The net change in operating assets and liabilities was primarily due to a $57.7 million reduction in deferred revenue driven largely by revenue recognized from the Genentech Agreement, a $7.4 million increase in accounts receivable, net and a $5.2 million increase in inventory, which were partially offset by an $8.5 million increase in operating lease right-of-use assets and liabilities, a $3.9 million increase in accounts payable and accrued liabilities primarily related to our corporate bonus paid in 2022, and a $1.3 million decrease in prepaid expenses and other assets.

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Investing Activities

Cash provided by investing activities during the year ended December 31, 2022 was $2.9 million, which was primarily attributable to proceeds from maturities of marketable securities of $298.0 million, partially offset by purchases of marketable securities of $278.8 million and purchases of property and equipment of $16.3 million.

Cash provided by investing activities during the year ended December 31, 2021 was $181.2 million, which was primarily attributable to proceeds from maturities of marketable securities of $559.5 million, partially offset by purchases of marketable securities of $316.5 million and purchases of property and equipment of $61.7 million.

Financing Activities

Cash provided by financing activities during the year ended December 31, 2022 was $132.3 million, which was primarily attributable to $124.4 million in proceeds from the Purchase Agreement, net of issuance costs, as well as $7.9 million in proceeds from the exercise of stock options.

Cash provided by financing activities during the year ended December 31, 2021 was $27.1 million, which was primarily attributable to proceeds from the exercise of stock options.

Net Operating Loss Carryforwards

Utilization of our net operating loss ("NOL") carryforwards and credits may be subject to a substantial annual limitation due to the ownership change limitations provided by Section 382 of the Internal Revenue Code of 1986 (“Section 382”) and similar state provisions. The annual limitation may result in the expiration of NOL carryforwards and credits before utilization. If there should be an ownership change, our ability to utilize our NOL carryforwards and credits could be limited. We have completed a Section 382 analysis for changes in ownership through December 31, 2020 and continue to monitor for changes that could trigger a limitation. Based on this analysis, we do not expect to have any permanent limitations on the utilization of our federal NOLs. Under the Tax Cuts and Jobs Act, federal NOLs incurred in 2018 and future years may be carried forward indefinitely, but the deductibility of such federal NOLs is subject to an annual limitation. NOLs generated prior to 2018 are eligible to be carried forward up to 20 years. Based on the available objective evidence, management determined that it was more likely than not that the net deferred tax assets would not be realizable as of December 31, 2022. Accordingly, management applied a full valuation allowance against net deferred tax assets as of December 31, 2022.

Critical Accounting Policies and Estimates

We have prepared our consolidated financial statements in accordance with GAAP. Our preparation of these consolidated financial statements requires us to make estimates, assumptions and judgments that affect the reported amounts of assets, liabilities and related disclosures at the date of the consolidated financial statements, as well as revenue and expense recorded during the reporting periods. We evaluate our estimates and judgments on an ongoing basis. We base our estimates on historical experience and or other relevant assumptions that we believe to be reasonable under the circumstances. Estimates are used in several areas, including, but not limited to, estimates of progress to date for certain performance obligations and the transaction price for certain contracts with customers, imputing interest for the Purchase Agreement, the provision for income taxes, including related reserves, and the analysis of goodwill impairment, among others. These estimates generally involve complex issues and require judgments, involve the analysis of historical results and prediction of future trends, can require extended periods of time to resolve and are subject to change from period to period. Actual results may differ materially from management’s estimates.

While our significant accounting policies are described in more detail in Note 2 of the accompanying notes to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K, we believe the following accounting policies are critical to the judgments and estimates used in the preparation of our consolidated financial statements.

Revenue Recognition

Our revenue arrangements may include upfront payments for the performance of services in the future, which have both fixed and variable consideration. Non-refundable upfront fees and funding for related development services are generally considered fixed consideration, while milestone payments are identified as variable consideration.

In determining the appropriate amount of revenue to recognize as we fulfill our obligations under these agreements, we perform the following steps to determine the amount of revenue to be recognized: (1) identify the contract or contracts; (2) determine whether the promised goods or services are performance obligations, including whether they are distinct in the context of the contract; (3) measure the transaction price, including the constraint on variable consideration; (4) allocate the transaction price to the performance obligations based on estimated selling prices; and (5) recognize revenue when (or as) we satisfy each performance obligation.

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A performance obligation is a promise in a contract to transfer a distinct good or service to the customer and is the unit of account in Accounting Standards Codification (“ASC”) Topic 606, Revenue from Contracts with Customers. Our performance obligations include sequencing services and services associated with regulatory submission and approval processes. Significant management judgment is applied to determine (1) the measurement of the transaction price, including the constraint on variable consideration, (2) the allocation of the transaction price to the performance obligations and (3) the appropriate input or output based method to recognize revenue and the extent of progress to date.

We include the unconstrained amount of estimated variable consideration in the transaction price. The amount included in the transaction price is constrained to the amount for which it is probable that a significant reversal of cumulative revenue recognized will not occur. At the end of each subsequent reporting period, we re-evaluate the estimated variable consideration included in the transaction price and any related constraint and, if necessary, adjust our estimate of the overall transaction price.

To determine the allocation of the transaction price to the performance obligations, we apply the adjusted market assessment approach. Using this approach, we evaluate the market in which we sell the services and estimate the price that a customer in that market would be willing to pay for those services.

To select the measure of progress, we consider the expectations of the performance period which may be based on customer-dependent estimates of samples or internal estimates of the performance period based on both the customer and our expected development timeframes. For our collaboration with Genentech, we estimate the extent of progress using a proportional performance model that uses an input method based on costs incurred relative to the total estimated costs of research and development efforts to pursue both the Shared Products and Personalized Product pathways. These estimates are based on our internal estimates and development timeframes, which are subject to revision based on the potential outcomes for both product pathways, decisions made by Genentech, regulatory feedback or other factors not currently known. We regularly review our expectations of the extent of progress, including whether any variable consideration is no longer constrained, and, if any changes in estimates are made, we recognize revenue using the cumulative catch-up method.

Revenue Interest Liability, Net and Related Imputed Interest

The revenue interest liability balance associated with the Purchase Agreement that we entered into in September 2022 with OrbiMed is presented net of unamortized issuance costs on our consolidated balance sheets. We impute our associated interest expense using the effective interest rate method. We calculate an effective interest rate which will amortize our related obligation to zero over the anticipated repayment period. The effective interest rate may vary during the term of the agreement depending on a number of factors, including changes in forecasted GAAP revenues. We evaluate the effective interest rate quarterly based on both achieved and forecasted revenues, utilizing the prospective method. The estimates of future revenues and resulting revenue interest payments are based on key assumptions including population, penetration, probability of success and sales price, among others. A significant increase or decrease in or changes in timing of forecasted revenue will prospectively impact our interest expense and the time period for repayment. As of December 31, 2022, a hypothetical ten percent increase in forecasted quarterly revenue would not result in a material change in projected annual interest expense.

Goodwill

Goodwill represents the excess of the purchase price over the net amount of identifiable assets acquired and liabilities assumed in a business combination measured at fair value. We assess goodwill for impairment annually on October 1 and upon any occurrence of triggering events or substantive changes in circumstances that could indicate a potential impairment.

We evaluate goodwill for impairment by first assessing qualitative factors to determine whether it is more likely than not that the fair value of our reporting unit is less than its carrying amount. We evaluate certain qualitative factors such as macroeconomic conditions, the market and industry in which we operate, cost factors, overall financial performance and other relevant entity-specific events to determine if there are any negative trends or events that could indicate impairment. Key assumptions in this analysis include anticipated demand for our products and services, including industry and regulatory changes, future revenue growth and cash flow trends. These assumptions are determined based on our historical performance and management’s forecasted results. Management’s estimates of forecasted results are based upon assumptions believed to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ from estimates. If we determine that it is more likely than not that the fair value of our reporting unit is less than its carrying amount, or if we choose to bypass the qualitative assessment, we perform a quantitative goodwill impairment test. If impairment exists, the carrying value of the goodwill is reduced to fair value through an impairment charge recorded in our consolidated statements of operations. To date, we have not recognized any impairment of goodwill.

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