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Cash Equivalents and Marketable Securities | 6 Months Ended
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Oct. 31, 2024
Investments, Debt and Equity Securities [Abstract] |
Cash Equivalents and Marketable Securities | Cash Equivalents and Marketable Securities The following table summarizes the Company’s cash equivalents and available-for-sale marketable securities (in thousands):
| As of October 31, 2024 |  | As of April 30, 2024
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value |  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds | $ | 61,121 |  |  | $ | — |  |  | $ | — |  |  | $ | 61,121 |  |  | $ | 82,564 |  |  | $ | — |  |  | $ | — |  |  | $ | 82,564 |
Commercial paper | 8,115 |  |  | — |  |  | — |  |  | 8,115 |  |  | 18,769 |  |  | — |  |  | — |  |  | 18,769 |
U.S. treasury securities | 999 |  |  | — |  |  | — |  |  | 999 |  |  | 5,888 |  |  | — |  |  | — |  |  | 5,888 |
Available-for-sale marketable securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. treasury securities | 13,328 |  |  | 14 |  |  | (1) |  |  | 13,341 |  |  | 2,497 |  |  | — |  |  | — |  |  | 2,497 |
Certificates of deposit | 68,715 |  |  | — |  |  | — |  |  | 68,715 |  |  | 62,017 |  |  | — |  |  | — |  |  | 62,017 |
U.S. government agencies securities | 65,694 |  |  | 121 |  |  | (151) |  |  | 65,664 |  |  | 46,527 |  |  | 5 |  |  | (104) |  |  | 46,428 |
Commercial paper | 113,959 |  |  | — |  |  | — |  |  | 113,959 |  |  | 162,183 |  |  | — |  |  | — |  |  | 162,183 |
Corporate debt securities | 346,881 |  |  | 826 |  |  | (286) |  |  | 347,421 |  |  | 310,557 |  |  | 64 |  |  | (526) |  |  | 310,095 |
Total cash equivalents and available-for-sale marketable securities | $ | 678,812 |  |  | $ | 961 |  |  | $ | (438) |  |  | $ | 679,335 |  |  | $ | 691,002 |  |  | $ | 69 |  |  | $ | (630) |  |  | $ | 690,441 |
The following table summarizes the Company’s available-for-sale marketable securities by contractual maturity (in thousands):
| As of October 31, 2024 |  | As of April 30, 2024
| Amortized Cost |  | Fair Value |  | Amortized Cost |  | Fair Value
Within one year | $ | 482,694 |  |  | $ | 483,395 |  |  | $ | 514,747 |  |  | $ | 514,484 |
After one year through five years | 125,883 |  |  | 125,705 |  |  | 69,034 |  |  | 68,736 |
Total | $ | 608,577 |  |  | $ | 609,100 |  |  | $ | 583,781 |  |  | $ | 583,220 |
The following table summarizes the fair values and unrealized losses of the Company’s available-for-sale marketable securities classified by length of time that the securities have been in a continuous unrealized loss position but were not deemed to be other-than-temporarily impaired (in thousands):
| As of October 31, 2024
| Less Than 12 Months |  | 12 Months or Greater |  | Total
| Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value
U.S. treasury securities | $ | (1) |  |  | $ | 3,192 |  |  | $ | — |  |  | $ | — |  |  | $ | (1) |  |  | $ | 3,192 |
U.S. government agencies securities | (151) |  |  | 18,790 |  |  | — |  |  | — |  |  | (151) |  |  | 18,790 |
Commercial paper | — |  |  | 3,472 |  |  | — |  |  | — |  |  | — |  |  | 3,472 |
Corporate debt securities | (286) |  |  | 47,329 |  |  | — |  |  | 2,000 |  |  | (286) |  |  | 49,329 |
Total | $ | (438) |  |  | $ | 72,783 |  |  | $ | — |  |  | $ | 2,000 |  |  | $ | (438) |  |  | $ | 74,783 |
| As of April 30, 2024
| Less Than 12 Months |  | 12 Months or Greater |  | Total
| Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value
U.S. treasury securities | $ | — |  |  | $ | 2,497 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 2,497 |
U.S. government agencies securities | (99) |  |  | 33,890 |  |  | (6) |  |  | 7,749 |  |  | (105) |  |  | 41,639 |
Commercial paper | — |  |  | 4,058 |  |  | — |  |  | — |  |  | — |  |  | 4,058 |
Corporate debt securities | (491) |  |  | 196,907 |  |  | (34) |  |  | 27,658 |  |  | (525) |  |  | 224,565 |
Total | $ | (590) |  |  | $ | 237,352 |  |  | $ | (40) |  |  | $ | 35,407 |  |  | $ | (630) |  |  | $ | 272,759 |
As of October 31, 2024, the Company had 53 marketable securities in an unrealized loss position. As of April 30, 2024, the Company had 219 marketable securities that were in an unrealized loss position. The Company considers factors such as the duration, the magnitude and the reason for the decline in value, the potential recovery period, creditworthiness of the issuers of the securities and its intent to sell. For marketable securities, it also considers whether (i) it is more likely than not that the Company will be required to sell the debt securities before recovery of their amortized cost basis, and (ii) the amortized cost basis cannot be recovered as a result of credit losses. No significant facts or circumstances have arisen to indicate that there has been any significant deterioration in the creditworthiness of the issuers of the securities held by the Company. The decline in fair value below amortized cost basis was not considered other-than-temporary as it is more likely than not that the Company will hold the securities until maturity or a recovery of the cost basis, and no significant credit-related impairment losses were recorded as of October 31, 2024.

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