The following tables present details of stock-based compensation, acquisition-related costs and restructuring expense included in each functional line item in the condensed consolidated statements of operations above:
| Three Months Ended October 31, | Nine Months Ended October 31, | |||||||||||
| 2023 | 2022 | 2023 | 2022 | |||||||||
| (unaudited, in thousands) | ||||||||||||
| Stock-based compensation: | ||||||||||||
| Cost of revenue | $ | 868 | $ | 360 | $ | 2,694 | $ | 1,071 | ||||
| Research and development | 17,898 | 18,741 | 54,809 | 53,775 | ||||||||
| Selling, general and administrative | 8,643 | 9,000 | 25,293 | 27,205 | ||||||||
| Total stock-based compensation | $ | 27,409 | $ | 28,101 | $ | 82,796 | $ | 82,051 | ||||
| Three Months Ended October 31, | Nine Months Ended October 31, | ||||||||||
| 2023 | 2022 | 2023 | 2022 | ||||||||
| (unaudited, in thousands) | |||||||||||
| Acquisition-related costs: | |||||||||||
| Cost of revenue | $ | 757 | $ | 757 | $ | 2,271 | $ | 2,271 | |||
| Research and development | — | — | — | — | |||||||
| Selling, general and administrative | 520 | 520 | 1,560 | 1,578 | |||||||
| Total acquisition-related costs | $ | 1,277 | $ | 1,277 | $ | 3,831 | $ | 3,849 | |||
