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v3.19.1

Consolidated Statements of Cash Flows - USD ($) | 6 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
Net income (loss) | $ 35,934,235 | $ (28,083,189)
Change in value of derivatives |  | (432,141)
Stock-based compensation | 5,318,882 | 3,549,354
Depreciation and amortization | 2,353,319 | 2,294,639
Amortization/(accretion) of note premiums | 330,229 | 346,339
Changes in operating assets and liabilities: |  |
Accounts receivable | (13,094,965) | 51,510
Prepaid expenses and Other Current Assets | (1,440,287) | 1,225,562
Deferred revenue | 120,622,138 | (3,704,740)
Accounts payable | 1,256,092 | (2,266,082)
Accrued expenses | (2,340,651) | (2,918,752)
Other | (240,737) | (196,434)
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES | 148,698,255 | (30,133,934)
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Purchases of property and equipment | (946,788) | (513,719)
Purchases of marketable securities | (90,266,001) | (5,018,040)
Proceeds from sale of marketable securities | 12,239,219 | 23,704,420
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES | (78,973,570) | 18,172,661
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Principal payments on notes payable | (2,415,150) | (102,406)
Payments of taxes for net share settled restricted stock unit issuances |  | (54,667)
Proceeds from the exercises of warrants and stock options | 3,674,731 | 499,861
Proceeds from the issuance of common stock | 60,521,729 | 56,585,035
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES | 61,781,310 | 56,927,823
NET INCREASE (DECREASE) IN CASH | 131,505,995 | 44,966,550
CASH AT BEGINNING OF PERIOD | 30,133,213 | 24,838,567
CASH AT END OF PERIOD | 161,639,208 | 69,805,117
Supplementary disclosures: |  |
Interest Paid | (27,437) | (88,537)
Income Taxes Paid | $ (2,400) | $ (2,400)

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