Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Cash Flows

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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Operating activities:    
Net loss $ (3,651) $ (4,115)
Adjustments to reconcile net loss to net cash used in operating activities    
Depreciation and amortization 440 200
Inventory allowance expense 0 45
Amortization of deferred rent (9) (10)
Stock-based compensation expense 1,574 349
(Gain) on change in fair value of warrant liability (2,985) 0
Changes in operating assets and liabilities:    
Accounts receivable (314) 94
Inventories (1,475) (261)
Prepaid expense and other assets (298) (59)
Deferred costs of revenue 4,335 (354)
Accounts payable 924 681
Accrued liabilities 1,255 (721)
Deferred revenues (6,585) 323
Net cash used in operating activities (6,789) (3,828)
Investing activities:    
Acquisition of property and equipment (285) (281)
Net cash used in investing activities (285) (281)
Financing activities:    
Principal payments on note payable (19) (11)
Fees paid related to 2015 issuance of convertible preferred stock (173) 0
Proceeds from exercise of stock options 28 31
Proceeds from exercise of warrants 0 32
Net cash (used in) provided by financing activities (164) 52
Net decrease in cash (7,238) (4,057)
Cash at beginning of period 19,552 25,190
Cash at end of period $ 12,314 $ 21,133