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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Oct. 31, 2021 | Oct. 31, 2020
Cash flows from operating activities: |  |  |
Net loss |  | $ (94,198) | $ (14,794)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities |  |  |
Depreciation and amortization |  | 2,364 | 2,098
Non-cash operating lease cost |  | 1,100 | 1,650
Stock-based compensation expense |  | 46,452 | 7,681
Other |  | (538) | (75)
Changes in operating assets and liabilities |  |  |
Accounts receivable | [1] | 39,047 | (2,380)
Prepaid expenses, other current assets and other assets | [2] | (15,074) | (48)
Accounts payable | [3] | (1,682) | 3,159
Accrued compensation and employee benefits |  | (5,351) | (716)
Operating lease liabilities |  | (1,214) | (1,745)
Other liabilities | [4] | 13,564 | 2,345
Deferred revenue | [5] | (2,346) | 21,661
Net cash (used in) provided by operating activities |  | (17,876) | 18,836
Cash flows from investing activities: |  |  |
Purchases of property and equipment |  | (1,429) | (919)
Capitalized software development costs |  | (500) | 0
Purchases of investments |  | (388,870) | (128,330)
Maturities and sales of investments |  | 461,648 | 164,098
Net cash provided by investing activities |  | 70,849 | 34,849
Cash flows from financing activities: |  |  |
Proceeds from repayment of shareholder loan |  | 0 | 26,003
Payment of deferred offering costs |  | (105) | (2,325)
Proceeds from exercise of Class A common stock options |  | 11,305 | 4,536
Net cash provided by financing activities |  | 11,200 | 28,214
Net increase in cash, cash equivalents and restricted cash |  | 64,173 | 81,899
Cash, cash equivalents and restricted cash at beginning of period |  | 116,255 | 33,604
Cash and cash equivalents |  | 167,436 | 114,603
Restricted cash included in other assets |  | 12,992 | 900
Cash, cash equivalents and restricted cash at end of period |  | 180,428 | 115,503
Total cash, cash equivalents and restricted cash |  | 180,428 | 115,503
Supplemental disclosure of cash flow information—cash paid for income taxes |  | 625 | 323
Supplemental disclosures of non-cash investing and financing activities: |  |  |
Purchases of property and equipment included in accounts payable and accrued liabilities |  | 52 | 146
Unpaid liabilities related to intangible purchases |  | 2,500 | 0
Deferred offering costs included in accounts payable and accrued liabilities |  | 0 | 2,994
Vesting of early exercised stock options |  | $ 1,908 | $ 1,325
[1] | Including changes in related party balances of $(5,796) and $(150) for the six months ended October 31, 2021 and 2020, respectively.
[2] | Including changes in related party balances of $15,323 and nil for the six months ended October 31, 2021 and 2020, respectively.
[3] | Including changes in related party balances of $28 and nil for the six months ended October 31, 2021 and 2020, respectively.
[4] | Including changes in related party balances of $12,598 and nil for the six months ended October 31, 2021 and 2020, respectively.
[5] | Including changes in related party balances of $9,819 and $14,780 for the six ended October 31, 2021 and 2020, respectively.

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