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Consolidated Statements of Cash Flows (unaudited) - USD ($) | 9 Months Ended
--- | ---
Jun. 30, 2017 | Jun. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
Net loss | $ (23,648,409) | $ (59,501,016)
Change in value of derivatives | (1,519,513) | (233,052)
Stock-based compensation | 5,881,901 | 7,547,967
Depreciation and amortization | 3,535,915 | 2,416,461
Amortization/(accretion) of note premiums | (140,041) | 201,346
Changes in operating assets and liabilities: |  |
Accounts receivable | (862,313) |
Prepaid expenses and Other Current Assets | 3,176,551 | (887,426)
Deferred revenue | 8,796,246 |
Accounts payable | (4,353,087) | 913,664
Accrued expenses | (5,337,827) | (4,728,300)
Other | (264,921) | 24,249
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES | (14,735,498) | (54,246,107)
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Purchases of property and equipment | (7,810,754) | (1,147,748)
Purchases of marketable securities | (39,904,676) |
Proceeds from sale of marketable securities | 3,289,963 | 16,308,000
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES | (44,425,467) | 15,160,252
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Principal payments on capital leases and notes payable | (97,145) | (162,824)
Payments of taxes for net share settled restricted stock unit issuances | (417,140) | (634,187)
Proceeds from the exercises of warrants and stock options | 272,818 | 2,285,055
Proceeds from the issuance of common stock | 12,419,119 |
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES | 12,177,652 | 1,488,044
NET INCREASE (DECREASE) IN CASH | (46,983,313) | (37,597,811)
CASH AT BEGINNING OF PERIOD | 85,366,448 | 81,214,354
CASH AT END OF PERIOD | 38,383,135 | 43,616,543
Supplementary disclosures: |  |
Interest Paid | (142,033) | (8,906)
Property and equipment purchased through tenant improvement allowance financing |  | (4,849,360)
Income Tax Credits Refunded | 3,635,016 | 1,365,288
Income Tax Paid | $ (2,400) | $ (2,400)

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