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v3.19.1

Consolidated Statements of Cash Flows - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Operating activities: |  |  |
Net loss | $ (13,987,000) | $ (12,308,000) | $ (10,310,000)
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Write-off of inventory |  |  | 597,000
Depreciation and amortization | 88,000 | 78,000 | 39,000
Change in fair value of convertible preferred stock warrant liability |  |  | (250,000)
Change in fair value of maturity date preferred stock warrant liability |  |  | (10,000)
Change in fair value of convertible shareholder notes derivative liability |  |  | 1,224,000
Share-based Compensation, Total | 2,774,000 | 2,707,000 | 942,000
Non-cash interest expense on convertible shareholder notes |  |  | 1,736,000
Changes in operating assets and liabilities: |  |  |
Accounts receivable | (179,000) | (21,000) | 33,000
Inventory | 49,000 | (56,000) | 27,000
Prepaid expenses and other current assets | (104,000) | 16,000 | (110,000)
Other assets |  |  | (11,000)
Accounts payable | 119,000 | 377,000 | (17,000)
Accrued liabilities excluding accrued interest on convertible note | 240,000 | 415,000 | 530,000
Deferred revenue | (65,000) | 96,000 | 32,000
Deferred rent | (4,000) | 25,000 | 26,000
Net cash used in operating activities | (11,069,000) | (8,671,000) | (5,522,000)
Investing activities: |  |  |
Purchase of property and equipment | (66,000) | (136,000) |
Cash acquired in reverse merger |  |  | 19,017,000
Payment of transaction costs of reverse merger |  |  | (96,000)
Purchase of short-term investments |  | (1,800,000) |
Maturity of short-term investments |  | 1,800,000 |
Net cash (used) provided by investing activities | (66,000) | (136,000) | 18,921,000
Financing activities: |  |  |
Proceeds from sales of common stock and warrants, net of issuance costs of $200 | 3,800,000 |  |
Proceeds from issuance of convertible notes and warrants |  |  | 4,374,000
Proceeds from the exercise of common stock options | 4,000 | 144,000 | 22,000
Net cash provided by financing activities | 3,804,000 | 144,000 | 4,396,000
Net (decrease) increase in cash and cash equivalents | (7,331,000) | (8,663,000) | 17,795,000
Cash and cash equivalents at beginning of period | 12,689,000 | 21,352,000 | 3,557,000
Cash and cash equivalents at end of period | 5,358,000 | 12,689,000 | 21,352,000
Supplemental disclosure for noncash investing and financing activities: |  |  |
Exchange of convertible preferred stock warrants for common stock |  |  | 25,000
Conversion of convertible shareholder notes and related interest payable |  |  | 12,156,000
Reclassification of convertible shareholder notes derivative liability |  |  | 2,268,000
Conversion of preferred stock |  |  | $ 46,030,000

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- Definition Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109197908&loc=SL79508275-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585 + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
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