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Stock-based Compensation (Tables) | 3 Months Ended
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Apr. 30, 2025
Share-Based Payment Arrangement [Abstract] |
Classification of Stock-based Compensation | The following table presents the classification of stock-based compensation for the periods indicated:
|  | Three Months Ended April 30, |
|  | 2025 |  |  | 2024 |
|  | (in thousands) |
Stock-based compensation: |  |  |  |  |  |
Cost of revenue |  | $ | 951 |  |  | $ | 607 |
Research and development |  |  | 17,585 |  |  |  | 17,621 |
Selling, general and administrative |  |  | 7,594 |  |  |  | 7,808 |
Total stock-based compensation |  | $ | 26,130 |  |  | $ | 26,036 |
Weighted-Average Assumptions Used to Estimate Fair Value | The following table sets forth the weighted-average assumptions used to estimate the fair value of employee stock purchase plan awards for the periods indicated:
|  | Three Months Ended April 30, |
|  | 2025 |  |  | 2024 |
Employee stock purchase plan awards: |  |  |  |  |  |
Volatility |  |  | 54 | % |  |  | 39 | %
Risk-free interest rate |  |  | 4.29 | % |  |  | 5.38 | %
Expected term (years) |  |  | 0.5 |  |  |  | 0.5 |
Dividend yield |  |  | 0 | % |  |  | 0 | %
Stock Option Activities | The following table summarizes stock option activities for the period indicated:
|  | Options Outstanding |
|  |  |  |  |  |  |  |  |  |  |  |  | Weighted- |  |  |  |
|  |  |  |  |  |  |  |  |  | Total Intrinsic |  |  | Average |  |  |  |
|  |  |  |  |  |  |  | Weighted- |  | Value Of |  |  | Remaining |  |  | Aggregate |
|  |  |  |  | Weighted- |  |  | Average |  | Options |  |  | Contractual |  |  | Intrinsic |
|  |  |  |  | Average |  |  | Grant-date |  | Exercised |  |  | Term |  |  | Value |
|  | Shares |  |  | Exercise Price |  |  | Fair Value |  | (in thousands) |  |  | (in years) |  |  | (in thousands) |
Outstanding at January 31, 2025 |  |  | 226,616 |  |  | $ | 52.20 |  |  |  |  |  |  |  |  |  |  |  |
Exercised |  |  | (12,905 | ) |  |  | 44.38 |  |  |  |  | $ | 343 |  |  |  |  |  |  |
Expired |  |  | (4,600 | ) |  |  | 64.39 |  |  |  |  |  |  |  |  |  |  |  |
Outstanding at April 30, 2025 |  |  | 209,111 |  |  |  | 52.42 |  |  |  |  |  |  |  |  | 2.82 |  |  | $ | 930 |
Exercisable at April 30, 2025 |  |  | 204,454 |  |  | $ | 52.94 |  |  |  |  |  |  |  |  | 2.76 |  |  | $ | 843 |
Restricted Stock Unit Activities | The following table summarizes restricted stock unit activities for the period indicated:
|  |  |  |  | Weighted- |
|  |  |  |  | Average |
|  |  |  |  | Grant-Date |
|  | Shares |  |  | Fair Value |
Unvested at January 31, 2025 |  |  | 2,645,379 |  |  | $ | 71.84 |
Granted |  |  | 501,725 |  |  |  | 67.13 |
Vested |  |  | (362,141 | ) |  |  | 71.78 |
Forfeited |  |  | (144,799 | ) |  |  | 95.19 |
Unvested at April 30, 2025 |  |  | 2,640,164 |  |  | $ | 69.68 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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