v3.20.2
Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Cash flows from operating activities:    
Net loss $ (19,512) $ (16,360)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 731 628
Stock-based compensation 2,392 1,910
Amortization of premiums and discounts on marketable securities (183) (695)
Changes in operating assets and liabilities    
Prepaid expenses, other current assets and other long-term assets (166) (440)
Accounts payable, accrued liabilities and other current liabilities (1,219) 919
Operating lease liabilities (435) (374)
Net cash used in operating activities (18,392) (14,412)
Cash flows from investing activities:    
Purchases of property and equipment (110) (523)
Purchases of marketable securities (143,780) (59,255)
Maturities of marketable securities 67,284 62,896
Net cash (used in) provided by investing activities (76,606) 3,118
Cash flows from financing activities:    
Proceeds from sale of common stock and pre-funded warrants in underwritten offerings, net of offering costs 97,235  
Proceeds from issuance of common stock under employee stock incentive plans 128 184
Net cash provided by financing activities 97,363 184
Effect of exchange rate changes on cash and cash equivalents (20) (41)
Net increase (decrease) in cash and cash equivalents 2,345 (11,151)
Cash and cash equivalents at the beginning of period 14,951 24,182
Cash and cash equivalents at the end of period 17,296 13,031
Supplemental disclosures of noncash investing and financing information:    
Reclassification of employee stock liability to equity upon vesting 20 25
Purchase of property and equipment in accounts payable   $ 23
Unpaid offering costs in accrued liabilities $ 212  

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