| Dec'19 | Dec'18 | Dec'17 | Dec'16 | |||
|---|---|---|---|---|---|---|
Cash flows from operating activities | ||||||
Net loss | ||||||
-32,996 | -29,443 | -23,817 | -24,377 | |||
Adjustments to reconcile net loss to cash used in operating activities | ||||||
Depreciation expense | ||||||
37 | 38 | 17 | 5 | |||
Amortization expense - right-of-use leased assets - operating | ||||||
327 | 294 | 150 | 91 | |||
Stock-based compensation | ||||||
1,449 | 2,135 | 947 | 876 | |||
Non-cash interest expense | ||||||
385 | 374 | 198 | 6,512 | |||
Fair value adjustment to derivative liability | ||||||
2 | - | - | - | |||
Changes in operating assets and liabilities | ||||||
Prepaid expenses and other assets | ||||||
611 | 833 | 1,128 | 214 | |||
Accounts payable, accrued expenses and other liabilities | ||||||
965 | -1,377 | 951 | 1,652 | |||
Net cash used in operating activities | ||||||
-30,442 | -28,812 | -22,682 | -15,455 | |||
Purchases of property and equipment | ||||||
- | - | 194 | 9 | |||
Net cash used in investing activities | ||||||
- | - | -194 | -9 | |||
Cash flows from financing activities | ||||||
Proceeds from common stock offering, net of underwriter discounts and offering costs | ||||||
- | -4 | - | - | |||
Proceeds from term loan, net of costs | ||||||
9,555 | -62 | 9,273 | - | |||
Proceeds from at-the-market offering, net | ||||||
3,973 | - | 92,710 | - | |||
Proceeds from issuance of convertible notes | ||||||
- | - | - | 12,600 | |||
Costs related to issuance of convertible notes | ||||||
- | - | - | 66 | |||
Proceeds from the early exercise of stock options | ||||||
- | - | 1 | - | |||
Proceeds from the exercise of vested stock options | ||||||
- | - | 101 | 1 | |||
Proceeds from the exercise of stock options | ||||||
60 | 58 | - | - | |||
Purchase of restricted stock | ||||||
- | - | 3 | - | |||
Net cash provided by financing activities | ||||||
13,588 | -8 | 102,074 | 53,173 | |||
Net (decrease) increase in cash, cash equivalents and restricted cash | ||||||
-16,854 | -28,820 | 79,198 | 37,709 | |||
Supplemental cash flow information | ||||||
Interest paid | ||||||
1,383 | 1,059 | 599 | - | |||
Taxes paid | ||||||
337 | 298 | 14 | - | |||
Supplemental disclosure of non-cash activities | ||||||
Issuance of derivative in connection with modification of term loan | ||||||
763 | - | - | - | |||
Transfer of issuance costs from other noncurrent assets to equity | ||||||
54 | - | - | - | |||
Conversion of convertible preferred stock into common stock | ||||||
- | - | 73,102 | - | |||
Conversion of convertible notes into convertible preferred stock, including accrued interest | ||||||
- | - | - | 14,392 | |||
Beneficial conversion feature of convertible notes | ||||||
- | - | - | 4,653 | |||
Vesting of restricted stock | ||||||
- | 1 | 5 | 13 | |||
Acquisition of right-of-use leased assets - operating, net of disposal | ||||||
- | 26 | 1,603 | - | |||
Series B Convertible Preferred Stock | ||||||
Proceeds from issuance of stock | ||||||
- | - | - | 41,000 | |||
Costs related to issuance of stock | ||||||
- | - | 8 | 362 | |||