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Stockholders’ Equity (Tables) | 6 Months Ended
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Jul. 04, 2025
Share-Based Payment Arrangement [Abstract] |
Schedule of Allocated Stock-Based Compensation | We allocated the stock-based compensation for our 2017 Plan and our 2000 Employee Stock Purchase Plan (as amended and restated, the Amended ESPP) as follows (in thousands):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
Research and development | $ | 14,143 |  |  | $ | 9,178 |  |  | $ | 23,665 |  |  | $ | 13,070 |
Selling, general and administrative | 21,928 |  |  | 16,176 |  |  | 38,336 |  |  | 31,397 |
Total stock-based compensation | $ | 36,071 |  |  | $ | 25,354 |  |  | $ | 62,001 |  |  | $ | 44,467 |
Stock-based compensation for each type of award under our 2017 Plan and Amended ESPP were as follows (in thousands):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
Stock options | $ | 671 |  |  | $ | 1,524 |  |  | $ | 1,731 |  |  | $ | 3,262 |
Restricted stock units | 34,626 |  |  | 22,164 |  |  | 57,728 |  |  | 37,598 |
Performance stock units | — |  |  | 1,097 |  |  | 241 |  |  | 1,824 |
Employee stock purchase plan | 774 |  |  | 569 |  |  | 2,301 |  |  | 1,783 |
Total stock-based compensation | $ | 36,071 |  |  | $ | 25,354 |  |  | $ | 62,001 |  |  | $ | 44,467 |
Schedule Of Share-Based Payment Award, Equity Instruments Other Than Options, Valuation Assumptions | We used a Monte Carlo simulation model and the following assumptions to determine the grant date fair value of $47.58 per share for the 2025 TSR-based RSUs and $25.10 per share for the 2025 stock price target-based RSUs:
| 2025 TSR-based RSUs |  | 2025 stock price target-based RSUs
Fair value of Exelixis common stock on grant date | $ | 37.53 |  |  | $ | 36.92 |
Expected volatility | 32.6 | % |  | 38.3 | %
Risk-free interest rate | 4.0 | % |  | 3.9 | %
Dividend yield | — | % |  | — | %

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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