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v3.5.0.2

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) | 6 Months Ended
--- | ---
Jun. 30, 2016 | Jun. 30, 2015
Cash flows from operating activities: |  |  |
Net loss |  | $ (7,045,947) | $ (17,812,415)
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Depreciation and amortization |  | 457,616 | 545,698
Stock-based compensation |  | 932,314 | 2,660,468
Amortization of debt discount and issuance costs |  | 6,331 | 75,199
Gain on disposal of fixed assets |  |  | (148,898)
Write-down of fixed assets |  | 3,332,736 |
Change in fair value of warrant liability |  | (5,846,862) | (641,037)
Conversion of CIRM loan to grant revenue |  | (8,916,641) |
Gain on extinguishment of CIRM loan |  | (242,931) |
Changes in operating assets and liabilities: |  |  |
Trade receivables |  |  | 153,026
Accrued interest and other receivables |  | 5,843 | 69,251
Prepaid and other current assets |  | 533,607 | 182,581
Other assets |  | 742,729 |
Cash to trust account |  | (2,300,000) |
Accounts payable and accrued expenses |  | (1,449,649) | (1,536,194)
Acccrued wind-down expense |  | 2,209,730 |
Deferred revenue |  | (8,413) | (8,413)
Deferred rent |  | (44,977) | (23,766)
Net cash used in operating activities |  | (17,634,514) | (16,484,500)
Cash flows from investing activities: |  |  |
Purchases of property, plant and equipment |  | (15,434) | (556,313)
Proceeds from sale of property, plant and equipment |  |  | 148,713
Net cash used in investing activities |  | (15,434) | (407,600)
Cash flows from financing activities: |  |  |
Proceeds from the issuance of common stock, net of issuance costs |  | 7,259,613 | 24,942,963
Release of restricted Cash |  | 2,422,500 |
Payments related to net share issuance of stock based awards |  | (260,135) | (386,488)
Repayment of capital lease obligations |  | (11,030) | (11,014)
Repayment of loan payable |  | (1,422,495) | (2,698,054)
Net cash provided by (used in) financing activities |  | 7,988,453 | 21,847,407
Increase (decrease) in cash and cash equivalents |  | (9,661,495) | 4,955,307
Effects of foreign exchange rate changes on cash |  | (309) | (13,770)
Cash and cash equivalents, beginning of period |  | 12,110,565 | 24,987,603
Cash and cash equivalents, end of period |  | 2,448,761 | 29,929,140
Supplemental disclosure of cash flow information: |  |  |
Interest paid |  | $ 28,029 | 143,036
Supplemental schedule of non-cash investing and financing activities: |  |  |
Equipment acquired under a capital lease | [1] |  | $ 23,617
[1] | Represents the present value of future minimum capital lease payment for equipment leased

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- Definition The net cash inflow or outflow from cash and cash items that are not available for withdrawal or usage. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 + Details
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- Definition The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585 + Details
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- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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- References No definition available. + Details
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