| Dec'19 | Dec'18 | Dec'17 | ||||
|---|---|---|---|---|---|---|
CASH FLOWS FROM OPERATING ACTIVITIES: | ||||||
Net loss | ||||||
-51,109 | -41,102 | -30,615 | ||||
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||
Depreciation and amortization | ||||||
1,337 | 700 | 468 | ||||
Stock-based compensation | ||||||
3,646 | 1,297 | 965 | ||||
Amortization of right-of-use assets | ||||||
944 | - | - | ||||
Accretion of discount on available-for-sale securities | ||||||
543 | - | - | ||||
Loss on write down of fixed assets | ||||||
67 | 31 | 38 | ||||
Change in fair value of warrant liability | ||||||
609 | 52 | 32 | ||||
Amortization of debt issuance costs | ||||||
436 | 206 | 18 | ||||
Changes in operating assets and liabilities: | ||||||
Accounts receivable | ||||||
4,527 | 2,211 | 594 | ||||
Inventory | ||||||
6,824 | 2,608 | 1,863 | ||||
Prepaid expenses and other current assets | ||||||
785 | 144 | 373 | ||||
Other assets | ||||||
-41 | 917 | - | ||||
Accounts payable | ||||||
1,272 | 360 | 249 | ||||
Accrued and other current liabilities | ||||||
8,339 | 2,773 | 1,328 | ||||
Lease liabilities | ||||||
-1,010 | - | - | ||||
Other liabilities | ||||||
- | 98 | - | ||||
Net cash used in operating activities | ||||||
-48,107 | -41,465 | -30,347 | ||||
CASH FLOWS FROM INVESTING ACTIVITIES: | ||||||
Purchase of available-for-sale securities | ||||||
119,476 | - | 17,707 | ||||
Proceeds from maturities of available-for-sale securities | ||||||
63,750 | 1,807 | 15,900 | ||||
Purchase of property and equipment | ||||||
3,817 | 1,981 | 425 | ||||
Net cash provided by (used in) investing activities | ||||||
-59,543 | -174 | -2,232 | ||||
CASH FLOWS FROM FINANCING ACTIVITIES: | ||||||
Proceeds from issuance of common stock upon initial public offering, net of issuance costs paid | ||||||
100,547 | - | - | ||||
Proceeds from issuance of convertible preferred stock, net of issuance costs | ||||||
- | 14,920 | 34,907 | ||||
Proceeds from issuance of common stock in private placement | ||||||
10,000 | - | - | ||||
Principal payments of term loan | ||||||
1,667 | - | 1,557 | ||||
Issuance of common stock in public offering, net of issuance costs | ||||||
-96,856 | - | - | ||||
Net proceeds from term loan | ||||||
- | 14,988 | - | ||||
Payment of deferred offering costs | ||||||
- | 626 | - | ||||
Proceeds from stock option exercises | ||||||
2,206 | 426 | 139 | ||||
Proceeds from warrant exercises | ||||||
110 | 101 | 198 | ||||
Net cash provided by financing activities | ||||||
208,052 | 29,809 | 33,687 | ||||
Net (decrease) increase in cash, cash equivalents and restricted cash | ||||||
100,402 | -11,830 | 1,108 | ||||
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION: | ||||||
Interest paid | ||||||
534 | 156 | 40 | ||||
Income tax paid | ||||||
120 | 5 | - | ||||
NON-CASH INVESTING AND FINANCING ACTIVITIES: | ||||||
Common stock issued on conversion of convertible preferred stock | ||||||
152,806 | - | - | ||||
Offering cost included in account payable and accrued liabilities | ||||||
179 | - | - | ||||
Common stock warrants issued on conversion of preferred stock warrants and the reclassification of the warrant liability | ||||||
789 | - | - | ||||
Issuance of Series A-1 convertible preferred stock on net exercise of warrants | ||||||
- | 316 | - | ||||
Deferred offering costs included in accounts payable and accrued liabilities | ||||||
- | 893 | - | ||||
Right-of-use asset obtained in exchange for lease liability | ||||||
6,948 | - | - | ||||
Property and equipment purchases included in accounts payable and accrued liabilities | ||||||
52 | 55 | 58 | ||||
Issuance of common stock warrants in connection with debt financing | ||||||
- | 104 | - | ||||
Transfer of fixed assets to inventory | ||||||
119 | - | - | ||||