| Dec'19 | Dec'18 | Dec'17 | Dec'16 | Dec'15 | Dec'14 | Dec'13 |
|---|---|---|---|---|---|---|
Cash flows from operating activities: | ||||||
Consolidated net income (loss) | ||||||
-23,763 | -34,515 | -48,207 | -57,855 | - | - | - |
Net loss | ||||||
- | - | - | - | -47,973 | -24,350 | -20,014 |
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: | ||||||
Depreciation and amortization | ||||||
635 | 746 | 713 | 900 | 869 | 829 | 714 |
Issuance of common stock for technology | ||||||
- | - | - | - | 1,411 | - | - |
Stock-based compensation | ||||||
1,783 | 3,431 | 6,784 | 5,029 | 4,856 | 1,791 | 155 |
Debt discount accretion and non-cash interest expense | ||||||
707 | 966 | 590 | 173 | 297 | - | - |
Amortization of debt discount | ||||||
- | - | - | - | - | 426 | 211 |
Loss on debt extinguishment | ||||||
- | - | - | -29 | - | - | - |
Change in fair value of preferred stock warrant liability | ||||||
- | - | - | - | -29 | -36 | 28 |
Accretion of discount of available-for-sale investment securities | ||||||
284 | 261 | -14 | -531 | -789 | -43 | - |
Amortization of right-of-use assets | ||||||
731 | - | - | - | - | - | - |
Loss on disposal of property and equipment | ||||||
28 | -18 | - | - | - | - | - |
Deferred rent | ||||||
- | - | -130 | -315 | -295 | -277 | -254 |
Changes in operating assets and liabilities | ||||||
Prepaid expenses and other assets | ||||||
-334 | -610 | -761 | 421 | 666 | 1,043 | -323 |
Accounts payable and accrued expenses | ||||||
162 | -2,058 | -2,889 | -932 | 3,944 | -207 | 1,526 |
Contract liability | ||||||
208 | - | - | - | - | - | - |
Operating lease liability | ||||||
-498 | - | - | - | - | - | - |
Net cash provided by (used in) operating activities | ||||||
-20,013 | -31,063 | -42,364 | -52,861 | - | - | - |
Cash flows from investing activities: | ||||||
Net cash used in operating activities | ||||||
- | - | - | - | -36,797 | -22,824 | -17,311 |
Purchases of property and equipment | ||||||
79 | 594 | 1,312 | 600 | 664 | 249 | 644 |
Purchases of available-for-sale investment securities | ||||||
40,647 | 40,299 | 77,672 | 28,089 | 109,445 | 5,397 | - |
Maturities of available-for-sale investment securities | ||||||
45,600 | 78,065 | 51,347 | 62,216 | 38,115 | 3,400 | - |
Proceeds from sale of property and equipment | ||||||
51 | - | - | - | - | - | - |
Net cash provided by (used in) investing activities | ||||||
4,925 | 37,172 | -27,637 | 33,527 | - | - | - |
Cash flows from financing activities: | ||||||
Proceeds from issuance of common stock through employee stock purchase plan | ||||||
13 | 36 | 175 | - | - | - | - |
Proceeds from issuance of common stock through option exercises and release of restricted stock units | ||||||
- | 14 | 186 | - | - | - | - |
Net cash provided by investing activities | ||||||
- | - | - | - | -71,994 | -2,246 | -644 |
Proceeds from issuance of preferred stock for cash, net of issuance costs | ||||||
- | - | - | - | 75,648 | - | 38,660 |
Proceeds from issuance of common stock through initial public offering, net of offering costs | ||||||
- | - | - | - | 76,902 | - | - |
Costs paid in connection with initial public offering | ||||||
- | - | - | - | - | 999 | - |
Proceeds from issuance of common stock through option exercises | ||||||
- | - | - | 20 | 604 | 72 | 77 |
Proceeds from issuance of common stock through at the market offerings, net of offering costs | ||||||
4,405 | 379 | - | - | - | - | - |
Proceeds from issuance of common stock through registered direct offering, net of offering costs | ||||||
4,918 | - | - | - | - | - | - |
Proceeds from issuance of securities in the Private Placement, net of issuance costs | ||||||
- | - | 42,477 | - | - | - | - |
Proceeds from issuance of common stock through employee purchase plan | ||||||
- | - | - | 143 | - | - | - |
Proceeds from borrowing, net | ||||||
- | - | 9,866 | 9,736 | - | 5,000 | - |
Repayments on borrowings | ||||||
8,000 | 4,667 | - | 5,202 | - | - | - |
Net cash provided by (used in) financing activities | ||||||
1,336 | -4,238 | 52,704 | 4,697 | - | - | - |
Net change in cash and cash equivalents | ||||||
-13,752 | 1,871 | -17,297 | - | - | - | - |
Repayments on loans payable | ||||||
- | - | - | - | 3,237 | - | - |
Proceeds from notes payable to bank | ||||||
- | - | - | - | - | - | 5,000 |
Repayments on notes payable to bank | ||||||
- | - | - | - | - | 1,561 | 2,500 |
Proceeds from convertible debt | ||||||
- | - | - | - | - | - | 10,000 |
Repayments of convertible debt | ||||||
- | - | - | - | 2,000 | - | 500 |
Net cash provided by financing activities | ||||||
- | - | - | - | 147,917 | 2,512 | 50,737 |
Net change in cash and cash equivalents | ||||||
- | - | - | -14,637 | 39,126 | -22,558 | 32,782 |
Supplemental disclosure of cash flow information: | ||||||
Interest paid | ||||||
1,122 | 1,700 | 1,000 | 225 | - | - | - |
Purchase of fixed assets included in accounts payable | ||||||
- | 4 | 260 | - | - | - | - |
Interest paid | ||||||
- | - | - | - | 925 | 415 | 254 |
Supplemental schedule of noncash investing and financing activities: | ||||||
Issuance of warrants in connection with borrowings | ||||||
- | - | 263 | 217 | - | 148 | - |
Issuance of warrants in connection with long-term debt | ||||||
- | - | - | - | - | - | 137 |
Changes in share repurchase liability | ||||||
- | - | 48 | 102 | -120 | 13 | -3 |
Capital contribution related to reversal of historical accretion of redeemable convertible preferred stock | ||||||
- | - | - | - | - | - | 17,528 |
Conversion of convertible debt and accrued interest | ||||||
- | - | - | - | - | - | 9,537 |