v3.19.2
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Operating activities    
Net loss $ (35,916) $ (28,510)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 1,104 764
Amortization of financing right-of-use asset 77  
Loss on disposal of fixed assets 1  
Stock-based compensation expense 4,234 3,440
Net amortization of premiums and discounts on marketable securities (542) (115)
Changes in operating assets and liabilities:    
Prepaid expenses and other current assets (595) (1,668)
Other long-term assets (8) (16)
Accounts payable (1,551) (1,010)
Accrued expenses (4,614) (697)
Deferred revenue (916) 11,508
Operating lease asset and liabilities 300  
Deferred rent and lease incentive   (174)
Net cash used in operating activities (38,426) (16,478)
Investing activities    
Purchases of property and equipment (1,911) (168)
Purchases of marketable securities (33,636) (2,486)
Maturities of marketable securities 64,000 32,500
Net cash provided by investing activities 28,453 29,846
Financing activities    
Payments on financing and capital lease obligations (94) (46)
Proceeds from issuance of common stock through employee benefit plans 7 487
Proceeds from issuance of common stock and warrants in public offerings and private placements, net of issuance costs 60,362 68,179
Proceeds from issuance of convertible preferred stock and warrants, net of issuance costs 4,638  
Net cash provided by financing activities 64,913 68,620
Increase in cash, cash equivalents and restricted cash 54,940 81,988
Cash, cash equivalents and restricted cash, Beginning of period 50,814 32,688
Cash, cash equivalents and restricted cash, End of period 105,754 114,676
Supplemental disclosure of cash flow information:    
Cash paid for interest 31 1
Non-cash investing and financing activities    
Property and equipment received but unpaid as of period end 1,044 47
Assets acquired under financing lease 997 28
Offering costs incurred but unpaid as of period end $ 3 $ 2

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