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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2020 | Oct. 31, 2019 | Jul. 31, 2020
Cash flows from operating activities: |  |  |  |
Net loss |  | $ (265,048) | $ (229,300) |
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |  |
Depreciation and amortization |  | 23,499 | 22,462 |
Stock-based compensation |  | 89,198 | 81,426 |
Change in fair value of derivative liability |  | 64,740 | 0 |
Amortization of debt discount and issuance costs |  | 11,708 | 7,635 |
Operating lease cost, net of accretion |  | 8,347 | 6,671 |
Impairment of lease-related assets |  | 2,822 | 0 | $ 3,000
Non-cash interest expense |  | 1,952 | 0 |
Other |  | 1,671 | 103 |
Changes in operating assets and liabilities: |  |  |  |
Accounts receivable, net |  | 60,094 | 30,592 |
Deferred commissions |  | (28,230) | (18,313) |
Prepaid expenses and other assets |  | 6,222 | 16,150 |
Accounts payable |  | (4,075) | 5,208 |
Accrued compensation and benefits |  | 10,041 | (4,786) |
Accrued expenses and other liabilities |  | (1,238) | (5,772) |
Operating leases, net |  | (7,970) | (3,469) |
Deferred revenue |  | 22,194 | 65,230 |
Net cash provided by operating activities |  | (4,073) | (26,163) |
Cash flows from investing activities: |  |  |  |
Maturities of investments |  | 97,578 | 171,441 |
Purchases of investments |  | (513,998) | (321,474) |
Sales of investments |  | 0 | 7,870 |
Purchases of property and equipment |  | (12,252) | (18,203) |
Net cash used in investing activities |  | (428,672) | (160,366) |
Cash flows from financing activities: |  |  |  |
Proceeds from sales of shares through employee equity incentive plans |  | 19,600 | 23,973 |
Proceeds from the issuance of convertible notes, net of issuance costs |  | 723,757 | 0 |
Repurchases of common stock |  | (125,079) | 0 |
Net cash provided by financing activities |  | 618,278 | 23,973 |
Net (decrease) increase in cash, cash equivalents and restricted cash |  | 185,533 | (162,556) |
Cash, cash equivalents and restricted cash—beginning of period |  | 321,991 | 399,520 | 399,520
Cash, cash equivalents and restricted cash—end of period |  | 507,524 | 236,964 | 321,991
Restricted cash | [1] | 3,042 | 3,144 |
Cash and cash equivalents—end of period |  | 504,482 | 233,820 | $ 318,737
Supplemental disclosures of cash flow information: |  |  |  |
Cash paid for income taxes |  | 5,050 | 7,779 |
Supplemental disclosures of non-cash investing and financing information: |  |  |  |
Purchases of property and equipment included in accounts payable and accrued liabilities |  | $ 2,948 | $ 12,200 |
[1] | Included within other assets—non-current in the condensed consolidated balance sheets.

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