Organization and Summary of Significant Accounting Policies (Policies)	12 Months Ended
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Principles of Consolidation	Principles of Consolidation. The consolidated financial statements include the accounts of Incyte Corporation and our wholly owned subsidiaries. All inter-company accounts, transactions, and profits have been eliminated in consolidation.
Foreign Currency Translation	Foreign Currency Translation. Operations in non-U.S. entities are recorded in the functional currency of each entity. For financial reporting purposes, the functional currency of an entity is determined by a review of the source of an entity's most predominant cash flows. The results of operations for any non-U.S. dollar functional currency entities are translated from functional currencies into U.S. dollars using the average currency rate during each month. Assets and liabilities are translated using currency rates at the end of the period. Adjustments resulting from translating the financial statements of our foreign entities that use their local currency as the functional currency into U.S. dollars are reflected as a component of other comprehensive income (loss). Transaction gains and losses are recorded in other income (expense), net, in the consolidated statements of operations.
Use of Estimates	Use of Estimates. The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. Reclassifications. Certain prior year amounts have been reclassified for consistency with the current year presentation. These reclassifications had no effect on the reported results of operations.
Concentrations of Credit Risk	Concentrations of Credit Risk. Cash, cash equivalents, marketable securities, and trade receivables are financial instruments which potentially subject us to concentrations of credit risk. The estimated fair value of financial instruments approximates the carrying value based on available market information. By policy, we invest our excess available funds primarily in U.S. government debt securities which are securities issued or guaranteed by the U.S. government and money market funds that meet certain guidelines, which limits exposure to potential credit losses. Our receivables mainly relate to our product sales and collaborative agreements with pharmaceutical companies. We have not experienced any significant credit losses on cash, cash equivalents, marketable securities, or trade receivables to date and do not require collateral on receivables.
Current Expected Credit Losses	Current Expected Credit Losses. Financial assets measured at amortized cost are assessed for future expected credit losses under guidance within ASC 326, Financial Instruments – Credit Losses, to determine if application of an expected credit losses reserve is necessary. On a quarterly basis, receivables that resulted from revenue transactions within the scope of ASC 606, Revenue from Contracts with Customers, and recognized on an amortized cost basis are reviewed on a customer-level basis to analyze expectations of future collections based upon past history of collections, payment, aging of receivables and viability of the customer to continue payment, as well as estimates of future economic conditions. Receivables generally consist of two types: receivables from collaborative agreements, including milestones, reimbursements for agreed-upon activities and sales royalties; and receivables from customer product sales. Collaborative agreement receivables are closely monitored relationships with select, reputable industry peers. Collection of receivables is assessed within each collaborative partnership on a quarterly basis, including evaluation of each entity’s credit quality, financial health and past history of payment. Customer product sales receivables are independently evaluated on a monthly basis, on which unusual items or aged receivables are closely monitored for signs of credit deterioration, or indications of payment refusal. Customer product sales are with specialty pharmaceutical distributors, wholesalers, and certain public and private institutions, some of which whose financial obligations are funded by various government agencies.
Cash and Cash Equivalents	Cash and Cash Equivalents. Cash and cash equivalents are held in banks or in custodial accounts with banks. Cash equivalents are defined as all liquid investments and money market funds with maturity from date of purchase of 90 days or less that are readily convertible into cash.
Marketable Securities-Available-for-Sale	Marketable Securities—Available-for-Sale. Our marketable securities consist of investments in U.S. government debt securities that are classified as available-for-sale. Available-for-sale securities are carried at fair value, based on quoted market prices and observable inputs, with unrealized gains and losses, net of tax, reported as a separate component of stockholders’ equity. We classify marketable securities that are available for use in current operations as current assets on the consolidated balance sheets. Realized gains and losses and declines in value judged to be other than temporary for available-for-sale securities are included in other income (expense), net on the consolidated statements of operations. The cost of securities sold is based on the specific identification method.
Accounts Receivable	Accounts Receivable. As of December 31, 2024 and December 31, 2023, we had a de minimis amount of allowance for doubtful accounts. We provide an allowance for doubtful accounts based on management’s assessment of the collectability of specific customer accounts, which includes consideration of the credit worthiness and financial condition of those customers, aging of such receivables, history of collectability with the customer and the general economic environment. We record an allowance to reduce the receivables to the amount that is expected to be collected.
Inventory	Inventory. Inventories are valued at the lower of cost and net realizable value. We use the specific identification method to account for commercial product manufactured by third-party contractors, which is our predominant source of inventory. We apply the first-in, first-out (FIFO) method to inventories produced at our internal manufacturing facility located in Yverdon, Switzerland. Inventories consist of costs of materials, including shipping and handling fees, third-party contract manufacturing, and allocable overhead associated with the production of our commercialized products. We capitalize inventory after regulatory approval from U.S. Food and Drug Administration (FDA), European Medicines Agency (EMA) or Japanese Ministry of Health, Labour and Welfare (MHLW) as the related costs are expected to be recoverable through the commercialization of the product. Costs incurred prior to approval are recorded as research and development expense in our consolidated statements of operations. Raw materials, active pharmaceutical ingredients ("API") and work-in-process inventory are monitored for obsolescence, as applicable, and generally the shelf life of the finished goods inventory is approximately 36 months from the start of manufacturing of the finished goods, with the exception of OPZELURA, ZYNYZ and NIKTIMVO, which currently has an approximate shelf life of 24 months. We evaluate for potential excess inventory by analyzing current and future product demand relative to the remaining product shelf life. We build demand forecasts by considering factors such as, but not limited to, overall market potential, market share, market acceptance and patient usage. We classify inventory as current on the consolidated balance sheets when we expect inventory to be consumed for commercial use within the next twelve months.
Variable Interest Entities	Variable Interest Entities. We perform an initial and ongoing evaluation of the entities with which we have variable interests, such as equity ownership, in order to identify entities (i) that do not have sufficient equity investment at risk to permit the entity to finance its activities without additional subordinated financial support or (ii) in which the equity investors lack an essential characteristic of a controlling financial interest as variable interest entities (“VIE” or “VIEs”). If an entity is identified as a VIE, we perform an assessment to determine whether we have both (i) the power to direct activities that most significantly impact the VIE’s economic performance and (ii) have the obligation to absorb losses from or the right to receive benefits of the VIE that could potentially be significant to the VIE. If both of these criteria are satisfied, we are identified as the primary beneficiary of the VIE. As of December 31, 2024, there were no entities in which we held a variable interest which we determined to be VIEs.
Equity Investments	Equity Investments. Our equity investments consist of investments in common stock of publicly-held companies with whom we have entered into collaboration and license agreements. We classify our equity investments in common stock of publicly-held companies as either short term investments, for those investments which we intend to sell within one year, or long term investments, for those investments which we intend to hold for longer than one year, on the consolidated balance sheets. Our equity investments are accounted for at fair value using readily determinable pricing available on a securities exchange on the consolidated balance sheets. All changes in fair value are reported in the consolidated statements of operations as a realized and unrealized gain (loss) on equity investments. In assessing whether we exercise significant influence over any of the companies in which we hold equity investments, we consider the nature and magnitude of our investment, any voting and protective rights we hold, any participation in the governance of the other company, and other relevant factors such as the presence of a collaboration or other business relationship. Currently, none of our equity investments in publicly-held companies are considered relationships in which we have the ability to exercise significant influence.
Property and Equipment, net	Property and Equipment, net. Property and equipment, net is stated at cost, less accumulated depreciation and amortization. Depreciation is recorded using the straight-line method over the estimated useful lives of the respective assets. Leasehold improvements are amortized over the shorter of the estimated useful life of the assets or lease term.
Lease Accounting	Lease Accounting. All leases with a lease term greater than 12 months, regardless of lease type classification, are recorded as an obligation on the balance sheet with a corresponding right-of-use asset. Both finance and operating leases are reflected as liabilities on the commencement date of the lease based on the present value of the lease payments to be made over the lease term. Current operating lease liabilities are reflected in accrued and other current liabilities and noncurrent operating lease liabilities are reflected in other liabilities on the consolidated balance sheet. Right-of-use assets are valued at the initial measurement of the lease liability, plus any initial direct costs or rent prepayments, minus lease incentives and any deferred lease payments. Operating lease right-of-use assets are recorded in property and equipment, net on the consolidated balance sheet and lease cost is recognized on a straight-line basis. For finance leases, expense is recognized as separate amortization and interest expense, with higher interest expense in the earlier periods of a lease. Leases with an initial term of 12 months or less are not recorded on the balance sheet and we recognize lease expense for these leases on a straight-line basis over the term of the lease. In determining whether a contract contains a lease, asset and service agreements are assessed at onset and upon modification for criteria of specifically identified assets, control and economic benefit.
Other Intangible Assets, net	Other Intangible Assets, net. Other intangible assets, net consist of licensed intellectual property rights acquired in business combinations, which are reported at acquisition date fair value, less accumulated amortization, as well as milestone payments made to collaboration partners incurred at or after the product has obtained regulatory approval. Intangible assets with finite lives are amortized over their estimated useful lives using the straight-line method. Intangible assets with finite lives are tested for recoverability whenever events or changes in circumstances indicate that the carrying amounts may not be recoverable.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets. Long-lived assets with finite lives are tested for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. If indicators of impairment are present, the asset is tested for recoverability by comparing the carrying value of the asset to the related estimated undiscounted future cash flows expected to be derived from the asset. If the expected cash flows are less than the carrying value of the asset, then the asset is considered to be impaired and its carrying value is written down to fair value, based on the related estimated discounted future cash flows.
Goodwill	Goodwill. Goodwill is calculated as the difference between the acquisition date fair value of the consideration transferred and the values assigned to the assets acquired and liabilities assumed. Goodwill is not amortized but is tested for impairment at the reporting unit level at least annually as of October 1 or when a triggering event occurs that could indicate a potential impairment by assessing qualitative factors or performing a quantitative analysis in determining whether it is more-likely-than-not that the fair value of net assets are below their carrying amounts. A reporting unit is the same as, or one level below, an operating segment. Our operations are currently comprised of a single, entity wide reporting unit. We completed our most recent annual impairment assessment as of October 1, 2024 and determined that the carrying value of our goodwill was not impaired.
Income Taxes	Income Taxes. We account for income taxes using the asset and liability approach which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the carrying amount of assets and liabilities for financial reporting purposes and amounts reportable for income tax purposes. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more-likely-than-not that some portion or all of the deferred tax assets will not be realized. The primary factors used to assess the likelihood of realization are our recent history of cumulative earnings or losses, expected reversals of taxable temporary timing differences, forecasts of future taxable income and available tax planning strategies that could be implemented to realize the deferred tax assets. The tax effects of global intangible low-taxed income from certain foreign subsidiaries is recognized in the income tax provision in the period the tax arises. We recognize the tax benefit from an uncertain tax position only if it is more-likely-than-not that the position will be sustained upon examination by the taxing authorities, including resolutions of any related appeals or litigation processes, based on the technical merits of the position. The tax benefit that is recorded for these positions is measured at the largest amount of benefit that is greater than 50 percent likely of being realized upon ultimate settlement. We adjust the level of the liability to reflect any subsequent changes in the relevant facts surrounding the uncertain positions. Any interest and penalties on uncertain tax positions are included within the tax provision.
Net Income Per Share	Net Income Per Share. Our basic and diluted net income per share is calculated by dividing the net income by the weighted average number of shares of common stock outstanding during all periods presented. Options to purchase stock, restricted stock units and performance stock units are included in diluted earnings per share calculations, unless the effects are anti-dilutive.
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss). Accumulated other comprehensive income (loss) consists of unrealized gains or losses on our marketable debt securities that are classified as available-for-sale, foreign currency translation gains or losses and unrecognized actuarial gains or loss related to our defined benefit pension plan.
Revenue Recognition	Revenue Recognition. Revenue-generating contracts are assessed under ASC 606, Revenue from Contracts with Customers, to identify distinct performance obligations, determine the transaction price of the contract and allocate the transaction price to each of the distinct performance obligations. Revenue is recognized when we have satisfied a performance obligation through transferring control of the promised good or service to a customer. Control, in this instance, may mean the ability to prevent other entities from directing the use of, and receiving benefit from, a good or service. We apply the following five-step model in order to determine this amount: (i) identification of the promised goods or services in the contract; (ii) determination of whether the promised goods or services are performance obligations, including whether they are distinct in the context of the contract; (iii) measurement of the transaction price, including the constraint on variable consideration; (iv) allocation of the transaction price to the performance obligations; and (v) recognition of revenue when (or as) the Company satisfies each performance obligation, which for the Company is generally at a point in time. We also assess collectability based primarily on the customer’s payment history and on the creditworthiness of the customer. Product Revenues Our product revenues consist of sales of JAKAFI, MONJUVI, OPZELURA, PEMAZYRE and ZYNYZ in the U.S., sales of MINJUVI, PEMAZYRE, ICLUSIG and OPZELURA in Europe, sales of OPZELURA in Canada, and sales of PEMAZYRE in Japan. Product revenues are recognized at a point in time once we satisfy the performance obligation and control is transferred under the revenue recognition criteria as described above. We sell JAKAFI, MONJUVI, OPZELURA, PEMAZYRE and ZYNYZ to our customers in the U.S., which include specialty and retail pharmacies, specialty distributors and wholesalers. We sell MINJUVI, PEMAZYRE, ICLUSIG and OPZELURA to our customers in the European Union and certain other jurisdictions, which include retail pharmacies, hospital pharmacies and distributors. We sell PEMAZYRE in Japan to an exclusive wholesaler. We recognize revenues for product received by our customers net of allowances for customer credits, including estimated rebates, chargebacks, discounts, returns, distribution service fees, patient assistance programs, and government rebates, such as the Medicaid Drug Rebate Program and Medicare Part D coverage gap reimbursements in the U.S. and mandated discounts in Europe. Product shipping and handling costs are included in cost of product revenues. Customer Credits: Our customers are offered various forms of consideration, including allowances, service fees and prompt payment discounts. We expect our customers will earn prompt payment discounts and, therefore, we deduct the full amount of these discounts from total product sales when revenues are recognized. Service fees are also deducted from total product sales as they are earned. Rebates and Discounts: Allowances for rebates include mandated discounts under the Medicaid Drug Rebate Program in the U.S. and mandated discounts in Europe in markets where government-sponsored healthcare systems are the primary payers for healthcare. Rebates are amounts owed after the final dispensing of the product to a benefit plan participant and are based upon contractual agreements or legal requirements with public sector benefit providers. The accrual for rebates is based on statutory discount rates and expected utilization as well as historical data we have accumulated since product launches. Rebates are generally invoiced and paid in arrears so that the accrual balance consists of an estimate of the amount expected to be incurred for the current quarter’s activity, plus an accrual balance for known prior quarters’ unpaid rebates. If actual future rebates vary from estimates, we may need to adjust prior period accruals, which would affect revenue in the period of adjustment. Chargebacks: Chargebacks are discounts that occur when certain indirect contracted customers, which currently consist primarily of group purchasing organizations, Public Health Service institutions, non-profit clinics, and Federal government entities purchasing via the Federal Supply Schedule, purchase directly from our wholesalers. Contracted customers generally purchase the product at a discounted price. The wholesalers, in turn, charges back to us the difference between the price initially paid by the wholesalers and the discounted price paid by the contracted customers. In addition to actual chargebacks received, we maintain an accrual for chargebacks based on the estimated contractual discounts on the inventory levels on hand in our distribution channel. If actual future chargebacks vary from these estimates, we may need to adjust prior period accruals, which would affect revenue in the period of adjustment. Medicare Part D Coverage Gap: Medicare Part D prescription drug benefit mandates manufacturers to fund a portion of the Medicare Part D insurance coverage gap for prescription drugs sold to eligible patients. Our estimates for the expected Medicare Part D coverage gap are based on historical invoices received and in part from data received from our customers. Funding of the coverage gap is generally invoiced and paid in arrears so that the accrual balance consists of an estimate of the amount expected to be incurred for the current quarter’s activity, plus an accrual balance for known prior quarters. If actual future funding varies from estimates, we may need to adjust prior period accruals, which would affect revenue in the period of adjustment. Co-payment Assistance: Patients who have commercial insurance and meet certain eligibility requirements may receive co-payment assistance. We accrue a liability for co-payment assistance based on actual program participation and estimates of program redemption using data provided by third-party administrators. Product Royalty Revenues Royalty revenues on commercial sales for ruxolitinib (marketed as JAKAVI® outside the United States) by Novartis Pharmaceutical International Ltd. (“Novartis”) are based on net sales of licensed products in licensed territories as provided by Novartis. Royalty revenues on commercial sales for baricitinib (marketed as OLUMIANT) by Eli Lilly and Company (“Lilly”) are based on net sales of licensed products in licensed territories as provided by Lilly. Royalty revenues on commercial sales for capmatinib (marketed as TABRECTA®) by Novartis are based on net sales of licensed products in the licensed territories as provided by Novartis. Royalty revenues on commercial sales for pemigatinib (marketed as PEMAZYRE®) by Innovent Biologics, Inc. (“Innovent”) are based on net sales of licensed products in licensed territories as provided by Innovent. We recognize royalty revenues in the period the sales occur. Milestone and Contract Revenues For each collaborative research, development and/or commercialization agreement that results in revenue under the guidance of ASC 606, we identify all material performance obligations, which may include the license to intellectual property and know-how, research and development activities and/or other activities. In order to determine the transaction price, in addition to any upfront payment, we estimate the amount of variable consideration, including milestone payments, at the outset of the contract utilizing the most likely amount method. The most likely amount method is used since the milestone payments have a binary outcome (i.e., we receive all or none of the milestone payment). We constrain the estimate of variable consideration such that it is probable that a significant reversal of previously recognized revenue will not occur. When determining if variable consideration should be constrained, management considers whether there are factors outside the Company’s control that could result in a significant reversal of revenue. In making these assessments, management considers the likelihood and magnitude of a potential reversal of revenue. These estimates are re-assessed each reporting period as required. Once the estimated transaction price is established, amounts are allocated to the performance obligations that have been identified. The transaction price is generally allocated to each separate performance obligation on a relative standalone selling price basis. Out-licensing arrangements contain the right to use functional intellectual property, which is the underlying performance obligation of these collaborative arrangements. If the license of our intellectual property is determined to be distinct from other performance obligations in the arrangement, the functional intellectual property that is transferred to the collaborative partner at the onset of the arrangement is concluded to have significant standalone functionality and value at the point in time at which the intellectual property is made available to the collaborative partner. For licenses that are not distinct from other obligations identified in the arrangement, we utilize 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. If the combined performance obligation is satisfied over time, we apply an appropriate method of measuring progress for purposes of recognizing revenue from nonrefundable, upfront license fees. We evaluate the measure of progress each reporting period and, if necessary, adjust the measure of performance and related revenue recognition. For each of the three years ended December 31, 2024, we had no revenues from intellectual property licenses recognized over time. For milestone revenues related to sales-based achievements, we recognize the milestone revenues in the corresponding period of the product sale, in accordance with the guidance of ASC 606-10-55-65 for contracts that include a license to intellectual property and the license is the predominant item to which the product sale relates. Subsequent to the transfer of the intellectual property, we may earn milestones through achievement of pre-specified developmental or regulatory events and, as such, milestones are accounted for as variable consideration. We include developmental or regulatory milestones in the transaction price only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the milestone is subsequently resolved. Under the agreements currently in place, we do not consider these events to be within our control, but rather dependent upon the development activities of our collaborative partners and the decisions made by regulatory agencies. Accordingly, these milestones are not included in the transaction price until the counterparty, or third-party in the event of a regulatory submission, confirms the satisfaction or completion of the milestone triggering event. Given the high level of uncertainty of achievement, variable consideration associated with milestones are fully constrained until confirmation of the satisfaction or completion of the milestone by the third-party. Generally, the milestone events contained in our collaboration agreements coincide with the progression of our drugs from development, to regulatory approval and then to commercialization. The value of these milestones is dictated within the contract and is fixed upon achievement and reflects the amount of consideration which we expect to be entitled to in exchange for the satisfaction of that milestone. The process of successfully discovering a new development candidate, having it approved and successfully commercialized is highly uncertain. As such, the milestone payments we may earn from our partners involve a significant degree of risk to achieve and therefore, subsequent milestone payments due to Incyte are recognized as revenue at the point in time when such milestones are achieved. Our collaboration agreements may also include an option for the collaborative partner to elect to participate in research and development activities, such as shared participation in additional clinical trials using the compound. The presence of additional options for future participatory activities are assessed to determine if they represent material rights offered by us to the collaborative partner. We also determine whether the reimbursement of research and development expenses should be accounted for as collaborative revenues or an offset to research and development expenses in accordance with the provisions of gross or net revenue presentation and recognize the corresponding revenues or records the corresponding offset to research and development expenses as incurred. Our collaborative agreements may also include provisions for additional future collaborative efforts, such as options for shared commercialization staffing or licensing of additional molecules, involvement in joint committees, or options for inclusion in negotiations of future supply rights, which at the time of each collaborative agreement’s inception, are assessed to determine if these meet the definition of a performance obligation under ASC 606. Cost of Product Revenues Cost of product revenues includes all product related costs and royalties owed under our collaboration and license agreements, contingent on certain conditions. In addition, cost of product revenues includes the amortization of our licensed intellectual property for ICLUSIG and the amortization of capitalized milestone payments, using the straight-line method over the respective estimated useful lives, which range between approximately 10 to 14 years. Cost of product revenues also includes employee personnel costs, including stock compensation, for those employees dedicated to the production of our commercial products.
Research and Development Costs	Research and Development Costs. Our policy is to expense research and development costs as incurred, including amounts funded by research and development collaborations. Research and development expenses are comprised of costs we incur in performing research and development activities, including salary and benefits; stock-based compensation expense; outsourced services and other direct expenses, including clinical trial and pharmaceutical development costs; collaboration payments; expenses associated with drug supplies that are not being capitalized; and infrastructure costs, including facilities costs and depreciation expense. If a collaboration is a cost-sharing arrangement in which both we and our collaborator perform development work and share costs, we also recognize, as research and development expense in the period when our collaborator incurs development expenses, our portion of the co-development expenses that we are obligated to reimburse. Costs incurred under the collaboration arrangement that are reimbursable to us are recorded net against the related research and development expenses in the period in which the related expense is incurred. We often contract with contract research organizations (“CROs”) to facilitate, coordinate and perform agreed upon research and development of a new drug. To ensure that research and development costs are expensed as incurred, we record monthly accruals for clinical trials and preclinical testing costs based on the work performed under the contract. These CRO contracts typically call for the payment of fees for services at the initiation of the contract and/or upon the achievement of certain clinical trial milestones. In the event that we prepay CRO fees, we record the prepayment as a prepaid asset and amortize the asset into research and development expense over the period of time the contracted research and development services are performed. Most professional fees, including project and clinical management, data management, monitoring, and medical writing fees are incurred throughout the contract period. These professional fees are expensed based on their percentage of completion at a particular date. Our CRO contracts generally include pass through fees. Pass through fees include, but are not limited to, regulatory expenses, investigator fees, travel costs, and other miscellaneous costs, including shipping and printing fees. We expense the costs of pass through fees under our CRO contracts as they are incurred, based on the best information available to us at the time. The estimates of the pass through fees incurred are based on the amount of work completed for the clinical trial and are monitored through correspondence with the CROs, internal reviews and a review of contractual terms. The factors utilized to derive the estimates include the number of patients enrolled, duration of the clinical trial, estimated patient attrition, screening rate and length of the dosing regimen. CRO fees incurred to set up the clinical trial are expensed during the setup period.
Stock Compensation and Long Term Incentive Plans	Stock Compensation. Share-based payment transactions with employees, which include stock options, restricted stock units (“RSUs”) and performance shares (“PSUs”), are recognized as compensation expense over the requisite service period based on their estimated fair values as well as expected forfeiture rates, subject to customary retirement provisions that may accelerate the requisite service period for expense recognition purposes. The stock compensation process requires the use of estimates, particularly surrounding Black-Scholes assumptions such as stock price volatility over the option term and expected option lives, as well as expected forfeiture rates and the probability of PSUs vesting. The fair value of stock options, which are subject to graded vesting, are recognized as compensation expense over the requisite service period using the accelerated attribution method. The fair value of RSUs that are subject to cliff vesting are recognized as compensation expense over the requisite service period using the straight-line attribution method, and the fair value of RSUs that are subject to graded vesting are recognized as compensation expense over the requisite service period using the accelerated attribution method. The fair value of PSUs are recognized as compensation expense beginning at the time in which the performance conditions are deemed probable of achievement, which we assess as of the end of each reporting period. Once a performance condition is considered probable, we record compensation expense based on the portion of the service period elapsed to date with respect to that award, with a cumulative catch-up, net of estimated forfeitures, and recognize any remaining compensation expense, if any, over the remaining requisite service period using the straight-line attribution method for PSUs that are subject to cliff vesting and using the accelerated attribution method for PSUs that are subject to graded vesting. Compensation expense for PSUs with market performance conditions is calculated using a Monte Carlo simulation model as of the date of grant and recorded over the requisite service period. Long Term Incentive Plans. We have long term incentive plans which provide eligible employees with the opportunity to receive performance and service-based incentive compensation, which may be comprised of cash, stock options, restricted stock units and/or performance shares. The payment of cash and the grant or vesting of equity may be contingent upon the achievement of pre-determined regulatory, sales and internal performance milestones.
Advertising Expenses	Advertising Expenses. Advertising expenses, comprised primarily of television, radio, print media and Internet advertising, are expensed as incurred and are included in selling, general, and administrative expenses.
Acquisitions	Acquisitions. To determine whether acquisitions should be accounted for as a business combination or as an asset acquisition, we make certain judgments, which include assessing whether the acquired set of activities and assets would meet the definition of a business under the relevant accounting rules. If the acquired set of activities and assets meets the definition of a business, assets acquired and liabilities assumed are required to be recorded at their respective fair values as of the acquisition date. The excess of the purchase price over the fair value of the acquired net assets, where applicable, is recorded as goodwill. If the acquired set of activities and assets does not meet the definition of a business, the transaction is recorded as an asset acquisition, with the purchase price being allocated to the acquired asset, with no goodwill recorded. For a transaction recorded as an asset acquisition, any acquired in-process research and development that does not have an alternative future use is charged to expense at the acquisition date.
Acquisition-Related Contingent Consideration	Acquisition-Related Contingent Consideration. Acquisition-related contingent consideration consists of our future royalty obligations on future net revenues of ICLUSIG owed to Takeda Pharmaceutical Company Limited, which acquired ARIAD Pharmaceuticals, Inc. (“Takeda”). Acquisition-related contingent consideration was recorded on the acquisition date of June 1, 2016 at the estimated fair value of the obligation, in accordance with the acquisition method of accounting. The fair value measurement is based on significant inputs that are unobservable in the market and thus represents a Level 3 measurement. The fair value of the acquisition-related contingent consideration is remeasured each reporting period, with changes in fair value recorded in the consolidated statements of operations.
Profit sharing from co-commercialization activities	Profit sharing from co-commercialization activities. In profit sharing arrangements where we are deemed to be the principal, we record 100% of all revenues and expenses associated with the co-commercialization activities. We record our collaboration partner's share of profit or loss to cost of product revenues within our consolidated statement of operations. Other components of make-whole payments between us and our collaboration partners are classified in our consolidated statement of operations based on the nature of the underlying payable or receivable. In profit sharing arrangements where we are deemed to be the agent, we record our share of profit or loss from co-commercialization activities to (profit) and loss sharing under collaboration agreements within our consolidated statement of operations. Other components of make-whole payments between us and our collaboration partners are classified in our consolidated statement of operations based on the nature of the underlying payable or receivable.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In November 2023, the Financial Accounting Standards Board (the "FASB") issued ASU No. 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures.” This amended guidance applies to all public entities and aims to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses, to enable investors to develop more decision-useful financial analyses. This guidance is effective for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. See Note 17 for additional disclosures. In December 2023, the FASB issued ASU No. 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures.” This amended guidance applies to all entities and broadly aims to enhance the transparency and decision usefulness of income tax disclosures. For public business entities, the amendments in this Update are effective for fiscal years beginning after December 15, 2024. Early adoption is permitted for any annual periods for which financial statements have not been issued or made available for issuance. We are currently evaluating the impact that ASU No. 2023-09 will have on our consolidated financial statements and related disclosures. In March 2024, the SEC issued Release Nos. 33-11275; 34-99678 “The Enhancement and Standardization of Climate-Related Disclosures for Investors” to require public companies to provide certain climate-related information in their registration statements and annual reports. The compliance dates for the rules amended by this release begin in fiscal year 2025 for large accelerated filers. On April 4, 2024, the SEC issued an order staying the newly adopted rules. We are currently evaluating the impact of this release on our financial disclosures. In November 2024, the FASB issued ASU No. 2024-03, “Disaggregation of Income Statement Expenses (DISE).” This new guidance applies to all public entities and requires disclosures about specific types of expenses included in the expense captions presented on the face of the income statement as well as disclosures about selling expenses. Public entities must adopt the new standard prospectively for fiscal years beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027. Early adoption and retrospective application are permitted. We are currently evaluating the impact ASU No. 2024-03 will have on our consolidated financial statements and related disclosures.

Organization and Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Principles of Consolidation. The consolidated financial statements include the accounts of Incyte Corporation and our wholly owned subsidiaries. All inter-company accounts, transactions, and profits have been eliminated in consolidation.

Foreign Currency Translation

Foreign Currency Translation. Operations in non-U.S. entities are recorded in the functional currency of each entity. For financial reporting purposes, the functional currency of an entity is determined by a review of the source of an entity's most predominant cash flows. The results of operations for any non-U.S. dollar functional currency entities are translated from functional currencies into U.S. dollars using the average currency rate during each month. Assets and liabilities are translated using currency rates at the end of the period. Adjustments resulting from translating the financial statements of our foreign entities that use their local currency as the functional currency into U.S. dollars are reflected as a component of other comprehensive income (loss). Transaction gains and losses are recorded in other income (expense), net, in the consolidated statements of operations.

Use of Estimates

Use of Estimates. The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.

Reclassifications. Certain prior year amounts have been reclassified for consistency with the current year presentation. These reclassifications had no effect on the reported results of operations.

Concentrations of Credit Risk

Concentrations of Credit Risk. Cash, cash equivalents, marketable securities, and trade receivables are financial instruments which potentially subject us to concentrations of credit risk. The estimated fair value of financial instruments approximates the carrying value based on available market information. By policy, we invest our excess available funds primarily in U.S. government debt securities which are securities issued or guaranteed by the U.S. government and money market funds that meet certain guidelines, which limits exposure to potential credit losses. Our receivables mainly relate to our product sales and collaborative agreements with pharmaceutical companies. We have not experienced any significant credit losses on cash, cash equivalents, marketable securities, or trade receivables to date and do not require collateral on receivables.

Current Expected Credit Losses

Current Expected Credit Losses. Financial assets measured at amortized cost are assessed for future expected credit losses under guidance within ASC 326, Financial Instruments – Credit Losses, to determine if application of an expected credit losses reserve is necessary. On a quarterly basis, receivables that resulted from revenue transactions within the scope of ASC 606, Revenue from Contracts with Customers, and recognized on an amortized cost basis are reviewed on a customer-level basis to analyze expectations of future collections based upon past history of collections, payment, aging of receivables and viability of the customer to continue payment, as well as estimates of future economic conditions. Receivables generally consist of two types: receivables from collaborative agreements, including milestones, reimbursements for agreed-upon activities and sales royalties; and receivables from customer product sales. Collaborative agreement receivables are closely monitored relationships with select, reputable industry peers. Collection of receivables is assessed within each collaborative partnership on a quarterly basis, including evaluation of each entity’s credit quality, financial health and past history of payment. Customer product sales receivables are independently evaluated on a monthly basis, on which unusual items or aged receivables are closely monitored for signs of credit deterioration, or indications of payment refusal. Customer product sales are with specialty pharmaceutical distributors, wholesalers, and certain public and private institutions, some of which whose financial obligations are funded by various government agencies.

Cash and Cash Equivalents

Cash and Cash Equivalents. Cash and cash equivalents are held in banks or in custodial accounts with banks. Cash equivalents are defined as all liquid investments and money market funds with maturity from date of purchase of 90 days or less that are readily convertible into cash.

Marketable Securities-Available-for-Sale

Marketable Securities—Available-for-Sale. Our marketable securities consist of investments in U.S. government debt securities that are classified as available-for-sale. Available-for-sale securities are carried at fair value, based on quoted market prices and observable inputs, with unrealized gains and losses, net of tax, reported as a separate component of stockholders’ equity. We classify marketable securities that are available for use in current operations as current assets on the consolidated balance sheets. Realized gains and losses and declines in value judged to be other than temporary for available-for-sale securities are included in other income (expense), net on the consolidated statements of operations. The cost of securities sold is based on the specific identification method.

Accounts Receivable

Accounts Receivable. As of December 31, 2024 and December 31, 2023, we had a de minimis amount of allowance for doubtful accounts. We provide an allowance for doubtful accounts based on management’s assessment of the collectability of specific customer accounts, which includes consideration of the credit worthiness and financial condition of those customers, aging of such receivables, history of collectability with the customer and the general economic environment. We record an allowance to reduce the receivables to the amount that is expected to be collected.

Inventory

Inventory. Inventories are valued at the lower of cost and net realizable value. We use the specific identification method to account for commercial product manufactured by third-party contractors, which is our predominant source of inventory. We apply the first-in, first-out (FIFO) method to inventories produced at our internal manufacturing facility located in Yverdon, Switzerland. Inventories consist of costs of materials, including shipping and handling fees, third-party contract manufacturing, and allocable overhead associated with the production of our commercialized products. We capitalize inventory after regulatory approval from U.S. Food and Drug Administration (FDA), European Medicines Agency (EMA) or Japanese Ministry of Health, Labour and Welfare (MHLW) as the related costs are expected to be recoverable through the commercialization of the product. Costs incurred prior to approval are recorded as research and development expense in our consolidated statements of operations.

Raw materials, active pharmaceutical ingredients ("API") and work-in-process inventory are monitored for obsolescence, as applicable, and generally the shelf life of the finished goods inventory is approximately 36 months from the start of manufacturing of the finished goods, with the exception of OPZELURA, ZYNYZ and NIKTIMVO, which currently has an approximate shelf life of 24 months. We evaluate for potential excess inventory by analyzing current and future product demand relative to the remaining product shelf life. We build demand forecasts by considering factors such as, but not limited to, overall market potential, market share, market acceptance and patient usage. We classify inventory as current on the consolidated balance sheets when we expect inventory to be consumed for commercial use within the next twelve months.

Variable Interest Entities

Variable Interest Entities. We perform an initial and ongoing evaluation of the entities with which we have variable interests, such as equity ownership, in order to identify entities (i) that do not have sufficient equity investment at risk to permit the entity to finance its activities without additional subordinated financial support or (ii) in which the equity investors lack an essential characteristic of a controlling financial interest as variable interest entities (“VIE” or “VIEs”). If an entity is identified as a VIE, we perform an assessment to determine whether we have both (i) the power to direct activities that most significantly impact the VIE’s economic performance and (ii) have the obligation to absorb losses from or the right to receive benefits of the VIE that could potentially be significant to the VIE. If both of these criteria are satisfied, we are identified as the primary beneficiary of the VIE. As of December 31, 2024, there were no entities in which we held a variable interest which we determined to be VIEs.

Equity Investments

Equity Investments. Our equity investments consist of investments in common stock of publicly-held companies with whom we have entered into collaboration and license agreements. We classify our equity investments in common stock of publicly-held companies as either short term investments, for those investments which we intend to sell within one year, or long term investments, for those investments which we intend to hold for longer than one year, on the consolidated balance sheets. Our equity investments are accounted for at fair value using readily determinable pricing available on a securities exchange on the consolidated balance sheets. All changes in fair value are reported in the consolidated statements of operations as a realized and unrealized gain (loss) on equity investments.

In assessing whether we exercise significant influence over any of the companies in which we hold equity investments, we consider the nature and magnitude of our investment, any voting and protective rights we hold, any participation in the governance of the other company, and other relevant factors such as the presence of a collaboration or other business relationship. Currently, none of our equity investments in publicly-held companies are considered relationships in which we have the ability to exercise significant influence.

Property and Equipment, net

Property and Equipment, net. Property and equipment, net is stated at cost, less accumulated depreciation and amortization. Depreciation is recorded using the straight-line method over the estimated useful lives of the respective assets. Leasehold improvements are amortized over the shorter of the estimated useful life of the assets or lease term.

Lease Accounting

Lease Accounting. All leases with a lease term greater than 12 months, regardless of lease type classification, are recorded as an obligation on the balance sheet with a corresponding right-of-use asset. Both finance and operating leases are reflected as liabilities on the commencement date of the lease based on the present value of the lease payments to be made over the lease term. Current operating lease liabilities are reflected in accrued and other current liabilities and noncurrent operating lease liabilities are reflected in other liabilities on the consolidated balance sheet. Right-of-use assets are valued at the initial measurement of the lease liability, plus any initial direct costs or rent prepayments, minus lease incentives and any deferred lease payments. Operating lease right-of-use assets are recorded in property and equipment, net on the consolidated balance sheet and lease cost is recognized on a straight-line basis. For finance leases, expense is recognized as separate amortization and interest expense, with higher interest expense in the earlier periods of a lease. Leases with an initial term of 12 months or less are not recorded on the balance sheet and we recognize lease expense for these leases on a straight-line basis over the term of the lease. In determining whether a contract contains a lease, asset and service agreements are assessed at onset and upon modification for criteria of specifically identified assets, control and economic benefit.

Other Intangible Assets, net

Other Intangible Assets, net. Other intangible assets, net consist of licensed intellectual property rights acquired in business combinations, which are reported at acquisition date fair value, less accumulated amortization, as well as milestone payments made to collaboration partners incurred at or after the product has obtained regulatory approval. Intangible assets with finite lives are amortized over their estimated useful lives using the straight-line method. Intangible assets with finite lives are tested for recoverability whenever events or changes in circumstances indicate that the carrying amounts may not be recoverable.

Impairment of Long-Lived Assets

Impairment of Long-Lived Assets. Long-lived assets with finite lives are tested for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. If indicators of impairment are present, the asset is tested for recoverability by comparing the carrying value of the asset to the related estimated undiscounted future cash flows expected to be derived from the asset. If the expected cash flows are less than the carrying value of the asset, then the asset is considered to be impaired and its carrying value is written down to fair value, based on the related estimated discounted future cash flows.

Goodwill

Goodwill. Goodwill is calculated as the difference between the acquisition date fair value of the consideration transferred and the values assigned to the assets acquired and liabilities assumed. Goodwill is not amortized but is tested for impairment at the reporting unit level at least annually as of October 1 or when a triggering event occurs that could indicate a potential impairment by assessing qualitative factors or performing a quantitative analysis in determining whether it is more-likely-than-not that the fair value of net assets are below their carrying amounts. A reporting unit is the same as, or one level below, an operating segment. Our operations are currently comprised of a single, entity wide reporting unit. We completed our most recent annual impairment assessment as of October 1, 2024 and determined that the carrying value of our goodwill was not impaired.

Income Taxes

Income Taxes. We account for income taxes using the asset and liability approach which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the carrying amount of assets and liabilities for financial reporting purposes and amounts reportable for income tax purposes. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more-likely-than-not that some portion or all of the deferred tax assets will not be realized. The primary factors used to assess the likelihood of realization are our recent history of cumulative earnings or losses, expected reversals of taxable temporary timing differences, forecasts of future taxable income and available tax planning strategies that could be implemented to realize the deferred tax assets. The tax effects of global intangible low-taxed income from certain foreign subsidiaries is recognized in the income tax provision in the period the tax arises.

We recognize the tax benefit from an uncertain tax position only if it is more-likely-than-not that the position will be sustained upon examination by the taxing authorities, including resolutions of any related appeals or litigation processes, based on the technical merits of the position. The tax benefit that is recorded for these positions is measured at the largest amount of benefit that is greater than 50 percent likely of being realized upon ultimate settlement. We adjust the level of the liability to reflect any subsequent changes in the relevant facts surrounding the uncertain positions. Any interest and penalties on uncertain tax positions are included within the tax provision.

Net Income Per Share

Net Income Per Share. Our basic and diluted net income per share is calculated by dividing the net income by the weighted average number of shares of common stock outstanding during all periods presented. Options to purchase stock, restricted stock units and performance stock units are included in diluted earnings per share calculations, unless the effects are anti-dilutive.

Accumulated Other Comprehensive Income (Loss)

Accumulated Other Comprehensive Income (Loss). Accumulated other comprehensive income (loss) consists of unrealized gains or losses on our marketable debt securities that are classified as available-for-sale, foreign currency translation gains or losses and unrecognized actuarial gains or loss related to our defined benefit pension plan.

Revenue Recognition

Revenue Recognition. Revenue-generating contracts are assessed under ASC 606, Revenue from Contracts with Customers, to identify distinct performance obligations, determine the transaction price of the contract and allocate the transaction price to each of the distinct performance obligations. Revenue is recognized when we have satisfied a performance obligation through transferring control of the promised good or service to a customer. Control, in this instance, may mean the ability to prevent other entities from directing the use of, and receiving benefit from, a good or service. We apply the following five-step model in order to determine this amount: (i) identification of the promised goods or services in the contract; (ii) determination of whether the promised goods or services are performance obligations, including whether they are distinct in the context of the contract; (iii) measurement of the transaction price, including the constraint on variable consideration; (iv) allocation of the transaction price to the performance obligations; and (v) recognition of revenue when (or as) the Company satisfies each performance obligation, which for the Company is generally at a point in time. We also assess collectability based primarily on the customer’s payment history and on the creditworthiness of the customer.

Product Revenues

Our product revenues consist of sales of JAKAFI, MONJUVI, OPZELURA, PEMAZYRE and ZYNYZ in the U.S., sales of MINJUVI, PEMAZYRE, ICLUSIG and OPZELURA in Europe, sales of OPZELURA in Canada, and sales of PEMAZYRE in Japan. Product revenues are recognized at a point in time once we satisfy the performance obligation and control is transferred under the revenue recognition criteria as described above. We sell JAKAFI, MONJUVI, OPZELURA, PEMAZYRE and ZYNYZ to our customers in the U.S., which include specialty and retail pharmacies, specialty distributors and wholesalers. We sell MINJUVI, PEMAZYRE, ICLUSIG and OPZELURA to our customers in the European Union and certain other jurisdictions, which include retail pharmacies, hospital pharmacies and distributors. We sell PEMAZYRE in Japan to an exclusive wholesaler.

We recognize revenues for product received by our customers net of allowances for customer credits, including estimated rebates, chargebacks, discounts, returns, distribution service fees, patient assistance programs, and government rebates, such as the Medicaid Drug Rebate Program and Medicare Part D coverage gap reimbursements in the U.S. and mandated discounts in Europe. Product shipping and handling costs are included in cost of product revenues.

Customer Credits: Our customers are offered various forms of consideration, including allowances, service fees and prompt payment discounts. We expect our customers will earn prompt payment discounts and, therefore, we deduct the full amount of these discounts from total product sales when revenues are recognized. Service fees are also deducted from total product sales as they are earned.

Rebates and Discounts: Allowances for rebates include mandated discounts under the Medicaid Drug Rebate Program in the U.S. and mandated discounts in Europe in markets where government-sponsored healthcare systems are the primary payers for healthcare. Rebates are amounts owed after the final dispensing of the product to a benefit plan participant and are based upon contractual agreements or legal requirements with public sector benefit providers. The accrual for rebates is based on statutory discount rates and expected utilization as well as historical data we have accumulated since product launches.

Rebates are generally invoiced and paid in arrears so that the accrual balance consists of an estimate of the amount expected to be incurred for the current quarter’s activity, plus an accrual balance for known prior quarters’ unpaid rebates. If actual future rebates vary from estimates, we may need to adjust prior period accruals, which would affect revenue in the period of adjustment.

Chargebacks: Chargebacks are discounts that occur when certain indirect contracted customers, which currently consist primarily of group purchasing organizations, Public Health Service institutions, non-profit clinics, and Federal government entities purchasing via the Federal Supply Schedule, purchase directly from our wholesalers. Contracted customers generally purchase the product at a discounted price. The wholesalers, in turn, charges back to us the difference between the price initially paid by the wholesalers and the discounted price paid by the contracted customers. In addition to actual chargebacks received, we maintain an accrual for chargebacks based on the estimated contractual discounts on the inventory levels on hand in our distribution channel. If actual future chargebacks vary from these estimates, we may need to adjust prior period accruals, which would affect revenue in the period of adjustment.

Medicare Part D Coverage Gap: Medicare Part D prescription drug benefit mandates manufacturers to fund a portion of the Medicare Part D insurance coverage gap for prescription drugs sold to eligible patients. Our estimates for the expected Medicare Part D coverage gap are based on historical invoices received and in part from data received from our customers. Funding of the coverage gap is generally invoiced and paid in arrears so that the accrual balance consists of an estimate of the amount expected to be incurred for the current quarter’s activity, plus an accrual balance for known prior quarters. If actual future funding varies from estimates, we may need to adjust prior period accruals, which would affect revenue in the period of adjustment.

Co-payment Assistance: Patients who have commercial insurance and meet certain eligibility requirements may receive co-payment assistance. We accrue a liability for co-payment assistance based on actual program participation and estimates of program redemption using data provided by third-party administrators.

Product Royalty Revenues

Royalty revenues on commercial sales for ruxolitinib (marketed as JAKAVI® outside the United States) by Novartis Pharmaceutical International Ltd. (“Novartis”) are based on net sales of licensed products in licensed territories as provided by Novartis. Royalty revenues on commercial sales for baricitinib (marketed as OLUMIANT) by Eli Lilly and Company (“Lilly”) are based on net sales of licensed products in licensed territories as provided by Lilly. Royalty revenues on commercial sales for capmatinib (marketed as TABRECTA®) by Novartis are based on net sales of licensed products in the licensed territories as provided by Novartis. Royalty revenues on commercial sales for pemigatinib (marketed as PEMAZYRE®) by Innovent Biologics, Inc. (“Innovent”) are based on net sales of licensed products in licensed territories as provided by Innovent. We recognize royalty revenues in the period the sales occur.

Milestone and Contract Revenues

For each collaborative research, development and/or commercialization agreement that results in revenue under the guidance of ASC 606, we identify all material performance obligations, which may include the license to intellectual property and know-how, research and development activities and/or other activities. In order to determine the transaction price, in addition to any upfront payment, we estimate the amount of variable consideration, including milestone payments, at the outset of the contract utilizing the most likely amount method. The most likely amount method is used since the milestone payments have a binary outcome (i.e., we receive all or none of the milestone payment). We constrain the estimate of variable consideration such that it is probable that a significant reversal of previously recognized revenue will not occur. When determining if variable consideration should be constrained, management considers whether there are factors outside the Company’s control that could result in a significant reversal of revenue. In making these assessments, management considers the likelihood and magnitude of a potential reversal of revenue. These estimates are re-assessed each reporting period as required. Once the estimated transaction price is established, amounts are allocated to the performance obligations that have been identified. The transaction price is generally allocated to each separate performance obligation on a relative standalone selling price basis.

Out-licensing arrangements contain the right to use functional intellectual property, which is the underlying performance obligation of these collaborative arrangements. If the license of our intellectual property is determined to be distinct from other performance obligations in the arrangement, the functional intellectual property that is transferred to the collaborative partner at the onset of the arrangement is concluded to have significant standalone functionality and value at the point in time at which the intellectual property is made available to the collaborative partner. For licenses that are not

distinct from other obligations identified in the arrangement, we utilize 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. If the combined performance obligation is satisfied over time, we apply an appropriate method of measuring progress for purposes of recognizing revenue from nonrefundable, upfront license fees. We evaluate the measure of progress each reporting period and, if necessary, adjust the measure of performance and related revenue recognition. For each of the three years ended December 31, 2024, we had no revenues from intellectual property licenses recognized over time.

For milestone revenues related to sales-based achievements, we recognize the milestone revenues in the corresponding period of the product sale, in accordance with the guidance of ASC 606-10-55-65 for contracts that include a license to intellectual property and the license is the predominant item to which the product sale relates.

Subsequent to the transfer of the intellectual property, we may earn milestones through achievement of pre-specified developmental or regulatory events and, as such, milestones are accounted for as variable consideration. We include developmental or regulatory milestones in the transaction price only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the milestone is subsequently resolved. Under the agreements currently in place, we do not consider these events to be within our control, but rather dependent upon the development activities of our collaborative partners and the decisions made by regulatory agencies. Accordingly, these milestones are not included in the transaction price until the counterparty, or third-party in the event of a regulatory submission, confirms the satisfaction or completion of the milestone triggering event. Given the high level of uncertainty of achievement, variable consideration associated with milestones are fully constrained until confirmation of the satisfaction or completion of the milestone by the third-party.

Generally, the milestone events contained in our collaboration agreements coincide with the progression of our drugs from development, to regulatory approval and then to commercialization. The value of these milestones is dictated within the contract and is fixed upon achievement and reflects the amount of consideration which we expect to be entitled to in exchange for the satisfaction of that milestone. The process of successfully discovering a new development candidate, having it approved and successfully commercialized is highly uncertain. As such, the milestone payments we may earn from our partners involve a significant degree of risk to achieve and therefore, subsequent milestone payments due to Incyte are recognized as revenue at the point in time when such milestones are achieved.

Our collaboration agreements may also include an option for the collaborative partner to elect to participate in research and development activities, such as shared participation in additional clinical trials using the compound. The presence of additional options for future participatory activities are assessed to determine if they represent material rights offered by us to the collaborative partner. We also determine whether the reimbursement of research and development expenses should be accounted for as collaborative revenues or an offset to research and development expenses in accordance with the provisions of gross or net revenue presentation and recognize the corresponding revenues or records the corresponding offset to research and development expenses as incurred.

Our collaborative agreements may also include provisions for additional future collaborative efforts, such as options for shared commercialization staffing or licensing of additional molecules, involvement in joint committees, or options for inclusion in negotiations of future supply rights, which at the time of each collaborative agreement’s inception, are assessed to determine if these meet the definition of a performance obligation under ASC 606.

Cost of Product Revenues

Cost of product revenues includes all product related costs and royalties owed under our collaboration and license agreements, contingent on certain conditions. In addition, cost of product revenues includes the amortization of our licensed intellectual property for ICLUSIG and the amortization of capitalized milestone payments, using the straight-line method over the respective estimated useful lives, which range between approximately 10 to 14 years. Cost of product revenues also includes employee personnel costs, including stock compensation, for those employees dedicated to the production of our commercial products.

Research and Development Costs

Research and Development Costs. Our policy is to expense research and development costs as incurred, including amounts funded by research and development collaborations. Research and development expenses are comprised of costs we incur in performing research and development activities, including salary and benefits; stock-based compensation expense; outsourced services and other direct expenses, including clinical trial and pharmaceutical development costs; collaboration payments; expenses associated with drug supplies that are not being capitalized; and infrastructure costs, including facilities costs and depreciation expense. If a collaboration is a cost-sharing arrangement in which both we and our collaborator perform development work and share costs, we also recognize, as research and development expense in the period when our collaborator incurs development expenses, our portion of the co-development expenses that we are obligated to reimburse. Costs incurred under the collaboration arrangement that are reimbursable to us are recorded net against the related research and development expenses in the period in which the related expense is incurred.

We often contract with contract research organizations (“CROs”) to facilitate, coordinate and perform agreed upon research and development of a new drug. To ensure that research and development costs are expensed as incurred, we record monthly accruals for clinical trials and preclinical testing costs based on the work performed under the contract. These CRO contracts typically call for the payment of fees for services at the initiation of the contract and/or upon the achievement of certain clinical trial milestones. In the event that we prepay CRO fees, we record the prepayment as a prepaid asset and amortize the asset into research and development expense over the period of time the contracted research and development services are performed. Most professional fees, including project and clinical management, data management, monitoring, and medical writing fees are incurred throughout the contract period. These professional fees are expensed based on their percentage of completion at a particular date. Our CRO contracts generally include pass through fees. Pass through fees include, but are not limited to, regulatory expenses, investigator fees, travel costs, and other miscellaneous costs, including shipping and printing fees. We expense the costs of pass through fees under our CRO contracts as they are incurred, based on the best information available to us at the time. The estimates of the pass through fees incurred are based on the amount of work completed for the clinical trial and are monitored through correspondence with the CROs, internal reviews and a review of contractual terms. The factors utilized to derive the estimates include the number of patients enrolled, duration of the clinical trial, estimated patient attrition, screening rate and length of the dosing regimen. CRO fees incurred to set up the clinical trial are expensed during the setup period.

Stock Compensation and Long Term Incentive Plans

Stock Compensation. Share-based payment transactions with employees, which include stock options, restricted stock units (“RSUs”) and performance shares (“PSUs”), are recognized as compensation expense over the requisite service period based on their estimated fair values as well as expected forfeiture rates, subject to customary retirement provisions that may accelerate the requisite service period for expense recognition purposes. The stock compensation process requires the use of estimates, particularly surrounding Black-Scholes assumptions such as stock price volatility over the option term and expected option lives, as well as expected forfeiture rates and the probability of PSUs vesting. The fair value of stock options, which are subject to graded vesting, are recognized as compensation expense over the requisite service period using the accelerated attribution method. The fair value of RSUs that are subject to cliff vesting are recognized as compensation expense over the requisite service period using the straight-line attribution method, and the fair value of RSUs that are subject to graded vesting are recognized as compensation expense over the requisite service period using the accelerated attribution method. The fair value of PSUs are recognized as compensation expense beginning at the time in which the performance conditions are deemed probable of achievement, which we assess as of the end of each reporting period. Once a performance condition is considered probable, we record compensation expense based on the portion of the service period elapsed to date with respect to that award, with a cumulative catch-up, net of estimated forfeitures, and recognize any remaining compensation expense, if any, over the remaining requisite service period using the straight-line attribution method for PSUs that are subject to cliff vesting and using the accelerated attribution method for PSUs that are subject to graded vesting. Compensation expense for PSUs with market performance conditions is calculated using a Monte Carlo simulation model as of the date of grant and recorded over the requisite service period.

Long Term Incentive Plans. We have long term incentive plans which provide eligible employees with the opportunity to receive performance and service-based incentive compensation, which may be comprised of cash, stock options, restricted stock units and/or performance shares. The payment of cash and the grant or vesting of equity may be contingent upon the achievement of pre-determined regulatory, sales and internal performance milestones.

Advertising Expenses

Advertising Expenses. Advertising expenses, comprised primarily of television, radio, print media and Internet advertising, are expensed as incurred and are included in selling, general, and administrative expenses.

Acquisitions

Acquisitions. To determine whether acquisitions should be accounted for as a business combination or as an asset acquisition, we make certain judgments, which include assessing whether the acquired set of activities and assets would meet the definition of a business under the relevant accounting rules. If the acquired set of activities and assets meets the definition of a business, assets acquired and liabilities assumed are required to be recorded at their respective fair values as of the acquisition date. The excess of the purchase price over the fair value of the acquired net assets, where applicable, is recorded as goodwill. If the acquired set of activities and assets does not meet the definition of a business, the transaction is recorded as an asset acquisition, with the purchase price being allocated to the acquired asset, with no goodwill recorded. For a transaction recorded as an asset acquisition, any acquired in-process research and development that does not have an alternative future use is charged to expense at the acquisition date.

Acquisition-Related Contingent Consideration. Acquisition-related contingent consideration consists of our future royalty obligations on future net revenues of ICLUSIG owed to Takeda Pharmaceutical Company Limited, which acquired ARIAD Pharmaceuticals, Inc. (“Takeda”). Acquisition-related contingent consideration was recorded on the acquisition date of June 1, 2016 at the estimated fair value of the obligation, in accordance with the acquisition method of accounting. The fair value measurement is based on significant inputs that are unobservable in the market and thus represents a Level 3 measurement. The fair value of the acquisition-related contingent consideration is remeasured each reporting period, with changes in fair value recorded in the consolidated statements of operations.

Profit sharing from co-commercialization activities

Profit sharing from co-commercialization activities. In profit sharing arrangements where we are deemed to be the principal, we record 100% of all revenues and expenses associated with the co-commercialization activities. We record our collaboration partner's share of profit or loss to cost of product revenues within our consolidated statement of operations. Other components of make-whole payments between us and our collaboration partners are classified in our consolidated statement of operations based on the nature of the underlying payable or receivable.

In profit sharing arrangements where we are deemed to be the agent, we record our share of profit or loss from co-commercialization activities to (profit) and loss sharing under collaboration agreements within our consolidated statement of operations. Other components of make-whole payments between us and our collaboration partners are classified in our consolidated statement of operations based on the nature of the underlying payable or receivable.

Recent Accounting Pronouncements

In November 2023, the Financial Accounting Standards Board (the "FASB") issued ASU No. 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures.” This amended guidance applies to all public entities and aims to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses, to enable investors to develop more decision-useful financial analyses. This guidance is effective for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. See Note 17 for additional disclosures.

In December 2023, the FASB issued ASU No. 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures.” This amended guidance applies to all entities and broadly aims to enhance the transparency and decision usefulness of income tax disclosures. For public business entities, the amendments in this Update are effective for fiscal years beginning after December 15, 2024. Early adoption is permitted for any annual periods for which financial statements have not been issued or made available for issuance. We are currently evaluating the impact that ASU No. 2023-09 will have on our consolidated financial statements and related disclosures.

In March 2024, the SEC issued Release Nos. 33-11275; 34-99678 “The Enhancement and Standardization of Climate-Related Disclosures for Investors” to require public companies to provide certain climate-related information in their registration statements and annual reports. The compliance dates for the rules amended by this release begin in fiscal year 2025 for large accelerated filers. On April 4, 2024, the SEC issued an order staying the newly adopted rules. We are currently evaluating the impact of this release on our financial disclosures.

In November 2024, the FASB issued ASU No. 2024-03, “Disaggregation of Income Statement Expenses (DISE).” This new guidance applies to all public entities and requires disclosures about specific types of expenses included in the expense captions presented on the face of the income statement as well as disclosures about selling expenses. Public entities must adopt the new standard prospectively for fiscal years beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027. Early adoption and retrospective application are permitted. We are currently evaluating the impact ASU No. 2024-03 will have on our consolidated financial statements and related disclosures.