Organization and Summary of Significant Accounting Policies (Policies) |
3 Months Ended |
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Apr. 03, 2026 | |
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
| Basis of Consolidation | The accompanying unaudited Condensed Consolidated Financial Statements include the accounts of Exelixis and those of our wholly owned subsidiaries. These entities’ functional currency is the U.S. dollar. All intercompany balances and transactions have been eliminated.
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| Fiscal Period | We have adopted a 52- or 53-week fiscal year policy that generally ends on the Friday closest to December 31. Fiscal year 2026, which is a 52-week fiscal year, will end on January 1, 2027 and fiscal year 2025, which was a 52-week fiscal year, ended on January 2, 2026. For convenience, references in this report as of and for the fiscal periods ended April 3, 2026 and April 4, 2025, and as of and for the fiscal years ending January 1, 2027 and ended January 2, 2026, are indicated as being as of and for the periods ended March 31, 2026 and March 31, 2025, and the years ending December 31, 2026 and ended December 31, 2025, respectively.
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| Basis of Presentation | The accompanying Condensed Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the U.S. for interim financial information and pursuant to Form 10-Q and Article 10 of Regulation S-X of the Securities and Exchange Commission (SEC). Accordingly, they do not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. In our opinion, all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair presentation of our financial statements for the periods presented have been included. Operating results for the three months ended March 31, 2026 are not necessarily indicative of the results that may be expected for the year ending December 31, 2026 or for any future period. The accompanying Condensed Consolidated Financial Statements and Notes thereto should be read in conjunction with our Consolidated Financial Statements and Notes thereto for the fiscal year ended December 31, 2025, included in Part II, Item 8 of our Annual Report on Form 10-K, filed with the SEC on February 10, 2026 (Fiscal 2025 Form 10-K).
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| Use of Estimates | The preparation of the accompanying Condensed Consolidated Financial Statements conforms to accounting principles generally accepted in the U.S., which requires management to make judgments, estimates and assumptions that affect the reported amounts of assets, liabilities, equity, revenues and expenses and related disclosures. On an ongoing basis, we evaluate our significant estimates. We base our estimates on historical experience and on various other market-specific and other relevant assumptions that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results could differ materially from those estimates.
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| Recently Adopted Accounting Pronouncements and Recent Accounting Pronouncements Not Yet Adopted | Recently Adopted Accounting Pronouncements There were no new accounting pronouncements adopted by us since our filing of the Fiscal 2025 Form 10-K, which could have a significant effect on our Condensed Consolidated Financial Statements. Recent Accounting Pronouncements Not Yet Adopted In November 2024, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2024-03, Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses (ASU 2024-03), which enhances the disclosures required for expense disaggregation in our annual and interim consolidated financial statements. In January 2025, the FASB issued ASU 2025-01, Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures (Subtopic 220-40) – Clarifying the effective Date (ASU 2025-01), which clarifies the effective date of ASU 2024-03 for companies with a non-calendar year end. ASU 2024-03 is effective for us in our annual reporting for fiscal year 2027, and in our interim periods beginning in fiscal year 2028. Early adoption and retrospective application are permitted. We are currently evaluating the impact of ASU 2024-03 on our Consolidated Financial Statements. In September 2025, the FASB issued ASU 2025-06, Intangibles – Goodwill and Other – Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software (ASU 2025-06) to clarify and modernize the accounting for costs related to internal-use software by removing all references to software development project stages and clarifying the threshold entities apply to begin capitalizing costs. ASU 2025-06 is effective for us in our annual reporting for fiscal year 2028. Early adoption and retrospective reporting are permitted. We do not expect the adoption of ASU 2025-06 to have a material impact on our Consolidated Financial Statements. In December 2025, the FASB issued ASU 2025-11, Interim Reporting (Topic 270): Narrow-Scope Improvements (ASU 2025-11), which clarifies the guidance in Topic 270 to improve the consistency of interim financial reporting. ASU 2025-11 provides a comprehensive list of required interim disclosures and introduces a disclosure principle requiring entities to disclose events since the end of the last annual reporting period that have a material impact on the entity. ASU 2025-11 is effective for us in our annual reporting for fiscal year 2028, and in our interim periods beginning in fiscal year 2028. Early adoption and retrospective application are permitted. We do not expect the adoption of ASU 2025-11 to have a material impact on our Consolidated Financial Statements. In December 2025, the FASB issued ASU 2025-12, Codification Improvements (ASU 2025-12), which addresses thirty-three issues, representing amendments to Accounting Standards Codification (ASC) topics that clarify, correct errors or make minor improvements. ASU 2025-12 makes the ASC topics easier to understand and apply. ASU 2025-12 is effective for us in our annual reporting for fiscal year 2027, and in our interim periods beginning in fiscal year 2027. Early adoption and retrospective application are permitted on an issue-by-issue basis. We are currently evaluating the impact of ASU 2025-12 on our Consolidated Financial Statements.
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| Segment Reporting | We operate in one business segment that focuses on the discovery, development and commercialization of new medicines for difficult-to-treat cancers. Our President and Chief Executive Officer, as the chief operating decision-maker, manages and allocates resources to our operations on a total consolidated basis. Consistent with this decision-making process, our President and Chief Executive Officer uses net income to monitor budget versus actual results for purposes of evaluating performance and to make decisions about the allocation of resources. Our significant segment expenses that are regularly provided to our President and Chief Executive Officer and included in the measure of segment net income consist of consolidated expenses for our operational departments: drug discovery, development, and selling, general and administrative and other segment items.
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| Revenues | Total revenues include net product revenues attributed to geographic regions based on the ship-to location and license and collaboration services revenues attributed to geographic regions based on the location of our collaboration partners’ headquarters. Net product revenues and license revenues are recorded in accordance with ASC Topic 606, Revenue from Contracts with Customers (Topic 606). License revenues include the recognition of the portion of milestone payments allocated to the transfer of intellectual property licenses for which it had become probable in the current period that the milestone would be achieved and a significant reversal of revenues would not occur, as well as royalty revenues and our share of profits under our collaboration agreement with Genentech. Collaboration services revenues are recorded in accordance with ASC Topic 808, Collaborative Arrangements. Collaboration services revenues include the recognition of deferred revenues for the portion of upfront and milestone payments allocated to our research and development services performance obligations, development cost reimbursements earned under our collaboration agreements, product supply revenues, net of product supply costs and the royalties we paid on sales of products containing cabozantinib by our collaboration partners. License revenues and collaboration services revenues are presented in collaboration revenues in the accompanying Condensed Consolidated Statements of Income. The allowance for chargebacks, discounts for prompt payment and other are recorded as a reduction of trade receivables, net, and the remaining reserves are recorded as rebates and fees due to customers in the accompanying Condensed Consolidated Balance Sheets. Contract Assets and Liabilities We receive payments from our collaboration partners based on billing schedules established in each contract. Amounts are recorded as accounts receivable when our right to consideration is unconditional. We may also recognize revenue in advance of the contractual billing schedule and such amounts are recorded as a contract asset when recognized. We may be required to defer recognition of revenue for upfront and milestone payments until we perform our obligations under these arrangements, and such amounts are recorded as deferred revenue upon receipt or when due. For those contracts that have multiple performance obligations, contract assets and liabilities are reported on a net basis at the contract level. There were no contract assets as of March 31, 2026 and December 31, 2025. Contract liabilities are primarily related to deferred revenues from Ipsen Pharma SAS (Ipsen) and Takeda Pharmaceutical Company Limited (Takeda).
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