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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) | 12 Months Ended
--- | ---
Apr. 30, 2017 | Apr. 30, 2016
Operating activities: |  |
Net loss | $ (6,883,882) | $ (10,445,537)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Stock-based compensation and modification expense | 2,662,000 | 2,599,000
Depreciation and amortization expense | 168,000 | 156,000
Allowance for doubtful accounts | 24,000 | 30,000
Issuance of common stock for services | 44,000 | 44,000
Changes in operating assets and liabilities: |  |
Accounts receivable | (986,000) | (282,000)
Prepaid expenses and other current assets | 143,000 | (97,000)
Restricted cash | 0 | 13,000
Other long term assets | (107,000) | 0
Accounts payable | (43,000) | 482,000
Accrued liabilities | 412,000 | (102,000)
Other non-current liabilities | (44,000) | 65,000
Deferred revenue | 1,771,000 | 1,130,000
Net cash used in operating activities | (2,840,000) | (6,408,000)
Investing activities: |  |
Purchase of property and equipment | (766,000) | (322,000)
Net cash used in investing activities | (766,000) | (322,000)
Financing activities: |  |
Proceeds from June 2016 public offering, net of financing costs of $742 | 4,340,000 | 0
Payment of issuance costs related to 2015 private placement | 0 | (18,000)
Capital lease payments | (24,000) | (24,000)
Net cash provided by (used in) financing activities | 4,316,000 | (42,000)
Increase (decrease) in cash and cash equivalents | 710,000 | (6,772,000)
Cash and cash equivalents, beginning of year | 2,585,000 | 9,357,000
Cash and cash equivalents, end of year | $ 3,295,000 | $ 2,585,000

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