Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Cash Flows (Unaudited)

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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Cash flows from operating activities:    
Net loss $ (25,956) $ (19,512)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 745 731
Stock-based compensation 3,865 2,392
Amortization of premiums and discounts on marketable securities 1,045 (183)
Changes in operating assets and liabilities    
Prepaid expenses, other current assets and other long-term assets (21) (166)
Accounts payable, accrued liabilities and other current liabilities (576) (1,219)
Operating lease liabilities (504) (435)
Net cash used in operating activities (21,402) (18,392)
Cash flows from investing activities:    
Purchases of property and equipment (24) (110)
Purchases of marketable securities (37,913) (143,780)
Maturities of marketable securities 53,500 67,284
Net cash provided by (used in) investing activities 15,563 (76,606)
Cash flows from financing activities:    
Proceeds from issuance of common stock and warrants, net of issuance costs 10,673 97,235
Proceeds from issuance of common stock under employee stock incentive plans 344 128
Net cash provided by financing activities 11,017 97,363
Effect of exchange rate changes on cash and cash equivalents (24) (20)
Net increase in cash and cash equivalents 5,154 2,345
Cash and cash equivalents at the beginning of period 21,228 14,951
Cash and cash equivalents at the end of period 26,382 17,296
Supplemental disclosures of noncash investing and financing information:    
Reclassification of employee stock liability to equity upon vesting 14 20
Unpaid offering costs in accrued liabilities 25 $ 212
Purchase of property and equipment in accounts payable $ 16