v3.20.2
Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Cash flows from operating activities:    
Net loss $ 76,471 $ 53,540
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation, amortization and other 2,526 628
Stock-based compensation expense 8,527 4,330
Interest accrued (paid) on long-term debt 106 0
Amortization of debt discount and accretion related to debt 344 347
Change in common stock warrant fair value 0 (3)
Accretion of asset retirement obligations 93 48
Loss on extinguishment of debt 1,237 0
Loss on impairment of long-lived assets 0 22,139
Changes in operating assets and liabilities:    
Prepaid expenses (2,571) (96)
Accounts receivable, related party 107 240
Grants revenue receivable 3,610 (1,262)
Other assets 301 (145)
Operating lease right-of-use assets and liabilities (129) 566
Accounts payable 644 524
Accrued liabilities (1,930) 2,661
Other liabilities, related party 12,209 0
Deferred revenue (7,174) 0
Deferred revenue, related party (3,720) (15,709)
Net cash used in operating activities (62,291) (39,272)
Cash flows from investing activities:    
Purchases of property and equipment (4,512) (6,329)
Proceeds on sale of equipment 15 0
Purchase of marketable securities (115,895) (73,758)
Sales of marketable securities 72,523 48,583
Net cash used in investing activities (47,869) (31,504)
Cash flows from financing activities:    
Payments of capital and finance lease obligations (16) 23
Proceeds from issuance of long-term debt and warrants, net 14,677 0
Repayment of long-term debt (5,176) 0
Proceeds from stock option exercises 930 1,300
Proceeds from issuance of common stock and warrants, net of offering expenses 48,372 0
Net cash provided by financing activities 58,787 1,323
Net (decrease) in cash, cash equivalents, and restricted cash (51,373) (69,453)
Cash, cash equivalents and restricted cash, beginning of period 88,451 87,721
Cash, cash equivalents and restricted cash, end of period 37,078 18,268
Reconciliation of cash, cash equivalents and restricted cash    
Cash and cash equivalents 33,410 15,268
Restricted cash included in Other assets $ 3,668 $ 3,000
Restricted Cash and Cash Equivalents, Asset, Statement of Financial Position [Extensible List] us-gaap:OtherAssetsMember us-gaap:OtherAssetsMember
Cash, cash equivalents and restricted cash, end of period $ 37,078 $ 18,268
Supplemental Cash Flow Information    
Cash paid for interest 611 514
Non-Cash Investing and Financing Activities    
Fixed asset additions in accounts payable and accrued expenses 967 1,197
Total non-cash investing and financing activities $ 967 $ 1,197

Source