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v3.21.1

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
Net income (loss) | $ (47,550) | $ (22,509)
Stock-based compensation | 23,502 | 17,464
Depreciation and amortization | 3,766 | 2,632
Amortization/(accretion) of note premiums/discounts | 193 | 419
Changes in operating assets and liabilities: |  |
Accounts receivable | (109) | (604)
Prepaid expenses and other current assets | (2,213) | 47
Deferred revenue | 247,118 | (49,630)
Accounts payable | (1,530) | 5,768
Accrued expenses | 2,271 | (5,425)
Other | (497) | 723
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES | 224,951 | (51,115)
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Purchases of property and equipment | (11,437) | (7,929)
Purchases of investments | (40,000) | (180,523)
Proceeds from sale of investments | 47,545 | 19,603
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES | (3,892) | (168,849)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Proceeds from the exercises of stock options | 7,735 | 4,332
Proceeds from the issuance of common stock |  | 250,479
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES | 7,735 | 254,811
NET INCREASE (DECREASE) IN CASH | 228,794 | 34,847
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD | 143,583 | 221,804
CASH AND CASH EQUIVALENTS AT END OF PERIOD | $ 372,377 | $ 256,651

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