Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Cash Flows

v3.20.1
Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Cash flows from operating activities:    
Net loss $ 69,421 $ 30,287
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation, amortization and other 1,182 974
Stock-based compensation expense 5,859 3,992
Amortization of debt discount and accretion related to debt 486 318
Change in common stock warrant fair value (3) (951)
Accretion of asset retirement obligations 72 39
Capitalized interest 0 (125)
Loss on extinguishment of debt 0 115
Loss on disposal of equipment 0 35
Loss on impairment of long-lived assets 22,139 0
Changes in operating assets and liabilities:    
Prepaid expenses (74) (825)
Accounts receivable from related party (168) (240)
Grant revenue receivable (2,771) (4,351)
Other assets (286) (450)
Operating lease right-of-use assets and liabilities 2,816 0
Accounts payable 652 (1,736)
Accrued liabilities 6,534 2,667
Other liabilities (36) 224
Deferred revenue 7,775 26,136
Net cash used in operating activities (25,244) (4,465)
Cash flows from investing activities:    
Purchases of property and equipment (9,649) (5,722)
Purchases of marketable securities (90,159) (10,223)
Sales of marketable securities 60,084 0
Net cash used in investing activities (39,724) (15,945)
Cash flows from financing activities:    
Proceeds from issuance of common stock through Private Placement, net of issuance costs 10,469 0
Proceeds from issuance of common stock in a Public Offering, net of issuance costs 53,449 48,053
Payments of capital and finance lease obligations 32 (47)
Proceeds from issuance of long-term debt and warrants, net 0 4,537
Repayment of long-term debt 0 (3,605)
Proceeds from stock option exercises 1,748 283
Net cash provided by financing activities 65,698 49,221
Net increase in cash and cash equivalents 730 28,811
Cash and cash equivalents and restricted cash, beginning of period 87,721 58,910
Cash and cash equivalents and restricted cash, end of period 88,451 87,721
Reconciliation of cash, cash equivalents and restricted cash:    
Cash and cash equivalents 85,451 87,721
Restricted cash included in Other assets $ 3,000 $ 0
Restricted Cash and Cash Equivalents, Asset, Statement of Financial Position [Extensible List] us-gaap:OtherAssetsMember us-gaap:OtherAssetsMember
Cash and cash equivalents and restricted cash, end of period $ 88,451 $ 87,721
Supplemental Cash Flow Information    
Cash paid for interest 684 629
Non-Cash Investing and Financing Activities    
Fixed asset additions in accounts payable and accrued expenses $ 2,686 $ 0