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Segment Reporting (Tables) | 9 Months Ended
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Oct. 31, 2025
Segment Reporting [Abstract] |
Company's Revenue by Geographic Region Based on Bill-to Location | The following table sets forth the Company’s revenue by geographic region based on bill-to location for the periods indicated.
|  | Three Months Ended October 31, |  |  | Nine Months Ended October 31, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
|  | (in thousands) |
Taiwan |  | $ | 75,961 |  |  | $ | 54,612 |  |  | $ | 197,997 |  |  | $ | 128,127 |
Asia Pacific other than Taiwan |  |  | 20,177 |  |  |  | 15,733 |  |  |  | 54,525 |  |  |  | 42,103 |
Europe |  |  | 3,181 |  |  |  | 5,991 |  |  |  | 16,610 |  |  |  | 15,934 |
North America other than United States |  |  | 7,353 |  |  |  | 5,756 |  |  |  | 16,695 |  |  |  | 12,033 |
United States |  |  | 1,780 |  |  |  | 561 |  |  |  | 4,008 |  |  |  | 2,653 |
Total revenue |  | $ | 108,452 |  |  | $ | 82,653 |  |  | $ | 289,835 |  |  | $ | 200,850 |
Summary of Significant Segment Expense Included in Consolidated Net Loss | The following table presents the significant segment expenses included in the condensed consolidated net loss for the periods indicated:
|  | Three Months Ended October 31, |  |  | Nine Months Ended October 31, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
|  | (in thousands) |
Total revenue |  | $ | 108,452 |  |  | $ | 82,653 |  |  | $ | 289,835 |  |  | $ | 200,850 |
Less cost and expense: |  |  |  |  |  |  |  |  |  |  |  |
Product cost |  |  | 42,452 |  |  |  | 30,949 |  |  |  | 112,823 |  |  |  | 74,291 |
Employee-related |  |  | 32,828 |  |  |  | 28,820 |  |  |  | 96,353 |  |  |  | 86,282 |
Stock-based compensation |  |  | 25,741 |  |  |  | 26,847 |  |  |  | 77,059 |  |  |  | 80,495 |
Semiconductor development cost |  |  | 9,227 |  |  |  | 8,684 |  |  |  | 23,828 |  |  |  | 21,288 |
Tools & equipment |  |  | 6,422 |  |  |  | 6,217 |  |  |  | 21,849 |  |  |  | 18,186 |
Professional services |  |  | 3,924 |  |  |  | 3,582 |  |  |  | 11,415 |  |  |  | 11,724 |
Facilities-related |  |  | 3,342 |  |  |  | 2,708 |  |  |  | 8,890 |  |  |  | 8,172 |
Other segment items (a) |  |  | 1,813 |  |  |  | 1,065 |  |  |  | 3,592 |  |  |  | 3,868 |
Interest income |  |  | (2,190 | ) |  |  | (2,148 | ) |  |  | (6,544 | ) |  |  | (6,564 | )
Net loss |  | $ | (15,107 | ) |  | $ | (24,071 | ) |  | $ | (59,430 | ) |  | $ | (96,892 | )
(a) The other segment items include amortization of intangible assets acquired from business combinations, non-operating (income) expenses, income tax provision (benefit) and other immaterial items

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