Summary of Significant Accounting Policies | Summary of Significant Accounting Policies Basis of Presentation The Company’s fiscal year ends on March 31, and its first three fiscal quarters end on June 30, September 30 and December 31. The Company manages its operations as a single segment for purposes of assessing performance, making operating decisions, and allocating resources. This one operating and reporting segment primarily focuses on the development and commercialization of innovative medicines in areas of unmet medical need. The accompanying consolidated financial statements have been prepared in accordance with United States generally accepted accounting principles (“U.S. GAAP”). Any reference in these notes to applicable accounting guidance is meant to refer to the authoritative U.S. GAAP included in the Accounting Standards Codification (“ASC”), and Accounting Standards Update (“ASU”) issued by the Financial Accounting Standards Board (“FASB”). The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. Liquidity and Capital Resources As of March 31, 2022, the Company had approximately $434.2 million in cash, cash equivalents, and marketable securities. The Company believes that its existing cash, cash equivalents, and marketable securities will be sufficient to fund its anticipated operating expenses and capital expenditure requirements for at least the next 12 months from the date of issuance of this Annual Report on Form 10-K (“Annual Report”). In future periods, if the Company’s cash, cash equivalents, marketable securities, and amounts that it expects to generate from product sales and/or third-party collaboration payments are not sufficient to enable the Company to fund its operations, the Company may need to raise additional funds in the form of equity, debt, or from other sources. There can be no assurances that such funding sources will be available at terms acceptable to the Company, or at all. If the Company has insufficient funding to meet its working capital needs, it could be required to delay, limit, reduce, or terminate its drug development programs, commercialization efforts, and/or limit or cease operations. As of March 31, 2022, the Company had approximately $41.3 million of borrowing capacity available to it under the Sumitomo Pharma Loan Agreement (see Note 6(A)). As of March 31, 2022, the Company is also eligible to earn up to $3.6 billion and $122.5 million of additional milestone payments from Pfizer and Richter pursuant to the Pfizer Collaboration and License Agreement (see Note 13(B)) and the Richter Development and Commercialization Agreement (see Note 13(A)), respectively, as well as potential royalty payments on net sales under the Richter Development and Commercialization Agreement. Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires the Company’s management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the consolidated financial statements and the accompanying notes, and the reported amounts of revenue and expenses during the reported periods. Actual results could differ materially from those estimates. On an ongoing basis, the Company’s management evaluates its estimates, including those related to valuation of inventories, impairment testing for long-lived-assets, variables used in calculating the fair value of the Company’s equity awards, expected achievement of performance-based vesting criteria for equity awards, variable consideration and other relevant inputs impacting the gross and net revenue recognition, contingent liabilities, recoverability of deferred tax assets, determination of lease term, research and development (“R&D”) expenses and accruals, and effective income tax rates. Management bases estimates on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities as of the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period, that are not readily apparent from other sources. Estimates and assumptions are periodically reviewed considering changes in circumstances, facts, or experience. Changes in estimates and assumptions are reflected in reported results in the period in which they become known. In addition, management’s assessment of the Company’s ability to continue as a going concern involves the estimation of the amount and timing of future cash inflows and outflows. The Company has assessed the impact that the COVID-19 pandemic and the conflict in Ukraine has had on its operations and financial results as of March 31, 2022, and through May 11, 2022, the issuance date of these consolidated financial statements. The Company’s analysis was informed by the facts and circumstances as they were known to the Company. Through May 11, 2022, the Company’s results of operations and cash flows have not been significantly impacted by the COVID-19 pandemic or the conflict in Ukraine. The Company is not aware of any specific event or circumstance that would require an update to its estimates, judgments, and assumptions or a revision of the carrying value of the Company’s assets or liabilities as of May 11, 2022. Reclassifications Certain reclassifications have been made to the consolidated statements of cash flows for the years ended March 31, 2021, and 2020 to place them on a comparable basis with the year ended March 31, 2022, regarding the presentation of amortization of operating lease right-of-use assets of $1.5 million and $1.1 million, respectively. The reclassifications had no effect on the previously reported results of operations. The reclassifications had no effect on previously reported cash flows from operating activities in the consolidated statements of cash flows. Risks and Uncertainties The Company is subject to risks and uncertainties common to companies in the biotechnology and pharmaceutical industries, including, but not limited to, risks of failure or unsatisfactory results of nonclinical and clinical studies, the need for significant capital to fund the development of its product candidates and the commercialization of any product candidates that may obtain marketing approval, the need to obtain marketing approval for its product candidates, the need to successfully commercialize and gain market acceptance of any of its product candidates that obtain regulatory approval, dependence on strategic relationships with collaboration and commercialization partners and on key personnel, securing and protecting proprietary technology, compliance with government regulations, development by competitors of technological innovations, ability to transition from pilot-scale manufacturing to large-scale production of products, and dependence on third-party service providers such as contract research organizations (“CROs”), contract manufacturing organizations (“CMOs”), other suppliers, and third-party logistics providers. Concentrations of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk include cash, cash equivalents, and marketable securities. The Company is exposed to credit risk in the event of default by the financial institutions holding its cash and the issuers of its cash equivalents and marketable securities. The Company maintains its cash deposits and cash equivalents in highly-rated, federally-insured financial institutions in excess of federally insured limits. The Company has established guidelines relative to diversification and maturities of investments to maintain safety and liquidity. The Company has not historically experienced any significant credit losses related to these financial instruments and does not believe that it is exposed to any significant credit risk related to these instruments. The Company is also subject to credit risk from accounts receivable from product sales, amount due from its related party, and amounts due from its collaboration and commercialization partners. The Company monitors its exposure and records a reserve against uncollectible amounts as necessary. For the year ended March 31, 2022, four customers represented 87% of the Company’s ORGOVYX and MYFEMBREE product revenue, net and each of these customers represented 10% or greater of the Company’s ORGOVYX and MYFEMBREE product revenue, net. As of March 31, 2022, three customers represented 82% of the Company’s accounts receivable, and each of these customers represented 10% or greater of the Company’s accounts receivable. For the year ended March 31, 2021, four customers represented 90% of the Company’s product revenue, net and 95% of the Company’s accounts receivable as of March 31, 2021, and each of these customers represented 10% or greater of the Company’s product revenue, net and accounts receivable. The Company had no product sales for the year ended March 31, 2020. Cash, Cash Equivalents, and Restricted Cash Cash and cash equivalents include cash deposits in banks and all highly liquid investments that are readily convertible to cash (maturity of three months or less at the time of purchase). Interest income consists of interest earned and the accretion of discounts to maturity for cash equivalents and marketable securities. Restricted cash consists of funds held or designated to satisfy the requirements of certain agreements that are restricted in their use. As of March 31, 2022, and 2021, restricted cash includes approximately $7.1 million and $1.0 million, respectively, that is held in an escrow fund for use by Sunovion Pharmaceuticals Inc. (“Sunovion”), a subsidiary of Sumitomo Pharma, to manage payments for rebates, chargebacks, and similar fees pursuant to the Market Access Services Agreement (see Note 6(C)). The following represents a reconciliation of cash and cash equivalents on the consolidated balance sheets to total cash, cash equivalents and restricted cash in the consolidated statements of cash flows (in thousands): March 31, 2022 2021 2020 Cash and cash equivalents $ 406,704 $ 674,493 $ 76,644 Restricted cash (included in other assets) 10,100 2,987 1,374 Total cash, cash equivalents and restricted cash $ 416,804 $ 677,480 $ 78,018 Accounts Receivable, Net The Company’s accounts receivable consists of amounts due from customers related to product sales and have standard payment terms. For certain customers, the accounts receivable for the customer is net of prompt payment discounts. The Company monitors the financial performance and creditworthiness of its customers so that it can properly assess and respond to changes in their credit profile. The Company reserves against accounts receivable for estimated losses that may arise from a customer’s inability to pay, and any amounts determined to be uncollectible are written off against the reserve when it is probable that the receivable will not be collected. The Company has historically not experienced significant credit losses and no amounts were reserved for estimated losses as of March 31, 2022, and 2021. Marketable Debt Securities Investments in marketable debt securities are held in custodial accounts at a financial institution and managed by the Company’s investment advisor based on the Company’s investment guidelines. The Company considers all highly liquid investments in securities with a maturity of greater than three months at the time of purchase to be marketable securities. The Company classifies its marketable debt securities as available-for-sale at the time of purchase and reevaluates such designation at each balance sheet date. Unrealized gains and losses on available-for-sale securities are excluded from earnings and are recorded in accumulated other comprehensive (loss) income until realized. Any unrealized losses are evaluated for other-than-temporary impairment at each balance sheet date. Realized gains and losses are determined based on the specific identification method. The Company does not intend to sell its marketable debt securities that are in an unrealized loss position, and it is unlikely that the Company will be required to sell its marketable debt securities before recovery of their amortized cost basis, which may be maturity. Factors considered in determining whether a loss is temporary include the length of time and extent to which the fair value has been less than the amortized cost basis and whether the Company intends to sell the security or whether it is more likely than not that the Company would be required to sell the marketable debt security before recovery of the amortized cost basis. See Note 4 for additional information. Fair Value Measurements The Company utilizes fair value measurement guidance prescribed by accounting standards to value its financial instruments. The guidance establishes a fair value hierarchy for financial instruments measured at fair value that distinguishes between assumptions based on market data (observable inputs) and the Company’s own assumptions (unobservable inputs). Observable inputs are inputs that market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the inputs that market participants would use in pricing the asset or liability and are developed based on the best information available in the circumstances. Fair value is defined as the exchange price, or exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants on the measurement date. The fair value hierarchy contains three levels of inputs that may be used to measure fair value, in accordance with ASC 820, Fair Value Measurement, of which the first two are considered observable and the last is considered unobservable. These levels are as follows: • Level 1—inputs, which include unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access; • Level 2—inputs, which include observable inputs other than Level 1 inputs, such as quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset or liability; and • Level 3—inputs, which include unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the underlying asset or liability. Level 3 assets and liabilities include those whose fair value measurements are determined using pricing models, discounted cash flow methodologies, or similar valuation techniques, as well as significant management judgment or estimation. To the extent the valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3. A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. The recorded amounts of certain financial instruments, including cash, cash equivalents, accounts receivable, accounts payable, accrued liabilities, amounts due to Pfizer, and amounts due to and due from related parties, approximate fair value due to their relatively short maturities. Marketable debt securities that are classified as available-for-sale are recorded at estimated fair value and are included in Level 2 of the fair value hierarchy. The fair value of marketable debt securities is based on market prices from a variety of industry standard data providers and generally represents quoted prices for similar assets in active markets or have been derived from observable market data. Cost share advance from Pfizer is recorded at its estimated fair value and is included in Level 2 of the fair value hierarchy. Share-based compensation liabilities related to stock options are remeasured at fair value on a recurring basis using the Black-Scholes option pricing model and are included in Level 2 of the fair value hierarchy. Share-based compensation liabilities related to common shares are remeasured at fair value on a recurring basis and are included in Level 1 of the fair value hierarchy. Inventories The Company values its inventories at the lower-of-cost or net realizable value and determines the cost of inventories using the average-cost method. Net realizable value is the estimated selling prices in the ordinary course of the Company’s business, less reasonably predictable costs of completion, disposal, and transportation. The cost basis of the Company’s inventories is reduced for any products that are considered excessive or obsolete based upon assumptions about future demand and market conditions. Inventories include the cost for raw materials, the cost to manufacture the raw materials into finished goods, and overhead. Due to the nature of the Company’s supply chain process, inventory that is owned by the Company is physically stored at third-party warehouses, logistics providers and contract manufacturing organizations. The Company performs an assessment of the recoverability of inventories during each reporting period and writes down any excess and obsolete inventories to their net realizable value in the period in which the impairment is first identified. If they occur, such impairment charges are recorded as a component of cost of goods sold in the consolidated statements of operations. The Company capitalizes inventory costs associated with products following regulatory approval when based on management’s judgement, future commercialization is considered probable, and the future economic benefit is expected to be realized. As such, the manufacturing costs for product candidates incurred prior to regulatory approval are not capitalized, but rather expensed as R&D expenses when incurred. Property and Equipment, net Property and equipment are stated at cost, net of accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the assets, ranging from three The Company reviews the recoverability of its long-lived assets, including the related useful lives, whenever events or changes in circumstances indicate that the carrying amount of a long-lived asset might not be recoverable, based on undiscounted cash flows. If such assets are considered to be impaired, an impairment loss is recognized and is measured as the amount by which the carrying amount of the assets exceed their estimated fair value, which is measured based on the projected discounted future net cash flows arising from the assets. Leases The Company determines if an arrangement includes a lease at the inception of the agreement. For each of the Company’s lease arrangements, the Company records a right-of-use asset representing the Company’s right to use an underlying asset for the lease term and a lease liability representing the Company’s obligation to make lease payments. Operating lease right-of-use assets and operating lease liabilities are recognized at the lease commencement date based on the net present value of the remaining future minimum lease payments over the lease term. If the interest rate implicit in the Company’s leases is not readily determinable, in determining the weighted-average discount rate used to calculate the net present value of lease payments, the Company utilizes an estimate of its incremental borrowing rate based on market sources including interest rates for companies with similar credit quality for agreements of similar duration, determined by class of underlying asset, to discount the lease payments. Lease expense for the Company’s operating leases is recognized on a straight-line basis over the lease term and variable lease costs are expensed as incurred. The Company elected the practical expedient not to apply the recognition and measurement requirements to short-term leases, which is any lease with a term of one year or less as of the lease commencement date. The lease may require the Company to pay additional amounts for taxes, insurance, maintenance, and other expenses, which are generally referred to as non-lease components. The Company has elected the practical expedient to combine lease and non-lease components. If a lease includes options to extend the lease term, the Company does not assume the option will be exercised in its initial lease term assessment unless there is reasonable certainty that the Company will renew based on an assessment of economic factors present as of the lease commencement date. Collaborative Arrangements The Company may enter into collaboration arrangements with pharmaceutical and biotechnology partners. The Company analyzes its collaboration arrangements to assess whether they are within the scope of ASC 808, Collaborative Arrangements , to determine whether such arrangements involve joint operating activities performed by the parties that are both active participants in the activities and exposed to significant risks and rewards dependent on the commercial success of such activities. This assessment is performed throughout the life of the arrangement based on changes in responsibilities of all parties in the arrangement. For collaboration arrangements within the scope of ASC 808 that contain multiple units of account, the Company first determines which units of account of the collaboration are deemed to be within the scope of ASC 808 and those that are reflective of a vendor-customer relationship and, therefore, within the scope of ASC 606, Revenue from Contracts with Customers . While ASC 808 defines collaboration arrangements and provides guidance on income statement presentation, classification, and disclosures related to such arrangements, it does not address recognition and measurement matters, such as (1) determining the appropriate unit of account or (2) when the recognition criteria are met. Therefore, the accounting for these arrangements is either based on an analogy to other accounting literature, such as ASC 606, or an accounting policy election by management. For units of account within collaboration arrangements that are accounted for pursuant to ASC 808, an appropriate revenue recognition method is determined and applied consistently. The Company evaluates the presentation of amounts due from its collaborative partners associated with activities in the collaborative arrangements based on the nature of each activity. Amounts received prior to satisfying the revenue recognition criteria are recorded as deferred revenue in the Company’s consolidated balance sheets. If the related efforts underlying the deferred revenue are expected to be satisfied within the next twelve months, the deferred revenue is classified in current liabilities, otherwise it is classified as a non-current liability. Revenue Recognition For units of account under ASC 606, the Company recognizes revenue when its customer obtains control of promised goods or services, in an amount that reflects the consideration which the Company expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that the Company determines are within the scope of ASC 606, the Company performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when or as the Company satisfies a performance obligation. The Company only applies the five-step model to contracts when it is probable that the Company will collect the consideration it is entitled to in exchange for the goods or services it transfers to the customer. At contract inception, once the contract is determined to be within the scope of ASC 606, the Company assesses the goods or services promised within each contract, determines those that are performance obligations, and assesses whether each promised good or service is distinct. The Company then recognizes as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) the performance obligation is satisfied. License, Milestone and Other Revenue For units of account under ASC 606, the Company applies significant judgment when evaluating whether contractual obligations represent distinct performance obligations, allocating transaction price to performance obligations within a contract, determining when performance obligations have been met, assessing the recognition and future reversal of variable consideration, and determining and applying appropriate methods of measuring progress for performance obligations satisfied over time. These judgments are discussed in more detail below. • Licenses of intellectual property : If the licenses to intellectual property are determined to be distinct from the other performance obligations identified in the arrangement, the Company recognizes revenues from non-refundable, upfront fees allocated to the license when the license is transferred to the licensee and the licensee is able to use and benefit from the license. For licenses that are not distinct from other promises, the Company applies judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue from non-refundable, upfront fees. The Company evaluates the measure of progress each reporting period and, if necessary, adjusts the related revenue recognition accordingly. • Milestone payments : At the inception of each arrangement that includes research, development or regulatory milestone payments, the Company evaluates whether the milestones are considered probable of being reached and estimates the amount to be included in the transaction price using the most likely amount method. If it is probable that a significant revenue reversal would not occur, the associated milestone value is included in the transaction price. Milestone payments that are not within the Company’s control or the licensee, such as regulatory approvals, are not considered probable of being achieved until those approvals are received. The transaction price is then allocated to each performance obligation on a relative standalone selling price basis, for which the Company recognizes revenue as or when the performance obligations under the contract are satisfied. At the end of each subsequent reporting period, the Company re-evaluates the probability of achievement of such milestones and any related constraint, and if necessary, adjusts its estimate of the overall transaction price on a cumulative catch-up basis in earnings in the period of the adjustment. • Royalties and sales-based milestone payments : For arrangements that include sales-based royalties, including sales-based milestone payments based on pre-specified level of sales, the Company recognizes revenue at the later of (i) when the related sales occur, or (ii) when the performance obligation to which some or all of the royalty has been allocated has been satisfied (or partially satisfied). Product Revenue, net The Company sells its products in the U.S. principally through wholesale and specialty distribution and pharmacy channels (collectively, “customers”). These customers subsequently resell the Company’s products to healthcare providers and patients. In addition to distribution agreements with customers, the Company enters into arrangements with healthcare providers and payors that provide for government-mandated and/or privately-negotiated rebates, chargebacks and discounts with respect to the purchase of the Company’s products. Revenues from product sales are recognized when the customer obtains control of the Company’s products, which occurs at a point in time, typically upon delivery to the customer. Revenues from product sales are recorded at the net sales price, or “transaction price,” which includes estimates of variable consideration for which reserves are established that result from (a) invoice discounts for prompt payment and specialty distributor and specialty pharmacy service fees, (b) government and private payer rebates, chargebacks, discounts and fees, (c) group purchasing organization (“GPO”) discounts, performance rebates and administrative fees, (d) product returns and (e) costs of co-pay assistance programs for patients. These reserves are based on amounts earned or to be claimed on the related sale and are classified as reductions of accounts receivable (if the amount is payable to the customer) or accrued expenses and other current liabilities (if the amount is payable to a party other than a customer). Where appropriate, the Company utilizes the expected value method to determine the appropriate amount for estimates of variable consideration. The estimates of reserves established for variable consideration reflect current contractual and statutory requirements, the Company’s historical experience, specific known market events and trends, industry data and forecasted customer buying and payment patterns. The amount of variable consideration that is included in the transaction price may be constrained and is included in net product revenues only to the extent that it is probable that a significant reversal in the amount of the cumulative revenue recognized will not occur in a future period. Actual amounts of consideration ultimately received may differ from the Company’s estimates. If actual results vary from the Company’s estimates, the Company adjusts these estimates in the period such change in estimate becomes known, which could affect net product revenue and earnings in the period of the adjustment. More specifically, these adjustments include the following: • Prompt Pay Discounts: The Company generally provides invoice discounts on product sales to its customers for prompt payment. The Company estimates that its customers will earn these discounts and fees, and deducts the full amount of these discounts and fees from its gross product revenues and accounts receivable at the time such revenues are recognized. • Product Returns : Consistent with industry practice, the Company offers its customers limited product return rights for damages, shipment errors, and expiring product; provided that the return is within a specified period around the product expiration date as set forth in the applicable individual distribution agreement. The Company does not allow product returns for product that has been dispensed to a patient. In arriving at its estimate for product returns, the Company considers historical product returns, the underlying product demand, and industry specific data. • Chargebacks: Chargebacks are discounts that occur when contracted customers purchase directly from a specialty distributor. Contracted customers, which currently consist primarily of Public Health Service institutions, Federal government entities purchasing via the Federal Supply Schedule, GPOs, and health maintenance organizations, generally purchase the product at a discounted price. The specialty distributor, in turn, charges back to the Company the difference between the price initially paid by the specialty distributor and the discounted price paid to the specialty distributor by the customer. The allowance for chargebacks is based on actual chargebacks received and an estimate of sales to contracted customers. • Rebates: Allowances for rebates include mandated discounts under the Medicaid Drug Rebate Program and the Medicare Part D prescription drug benefit. Rebates are amounts owed after the final dispensing of the product to a benefit plan participant and are based upon contractual agreements with, or statutory requirements pertaining to, Medicaid and Medicare benefit providers. The allowance for rebates is based on statutory discount rates, estimated payor mix, and expected utilization. The Company’s es |