| Dec'19 | Dec'18 | Dec'17 | Dec'16 | |||
|---|---|---|---|---|---|---|
Cash flows from operating activities | ||||||
Net loss | ||||||
-55,572 | -27,366 | -16,830 | -11,406 | |||
Adjustments to reconcile net loss to net cash used in operating activities | ||||||
Stock-based compensation expense | ||||||
2,071 | 672 | 367 | 99 | |||
Depreciation and amortization | ||||||
900 | 644 | 366 | 198 | |||
Non cash lease expense | ||||||
1,202 | - | - | - | |||
Accrued interest on convertible notes payable | ||||||
- | - | 153 | 185 | |||
Net amortization of discounts on marketable securities | ||||||
541 | - | - | - | |||
Amortization of debt discount | ||||||
- | - | 132 | 76 | |||
Change in fair value of warrant liability | ||||||
- | - | - | 4 | |||
Changes in operating assets and liabilities | ||||||
Prepaid expenses and other assets | ||||||
1,814 | 507 | -335 | 327 | |||
Other assets | ||||||
-3,042 | - | 138 | -76 | |||
Accounts payable | ||||||
-1,761 | 2,555 | 804 | 570 | |||
Accrued liabilities | ||||||
4,288 | 1,048 | 257 | -317 | |||
Deferred revenue | ||||||
6,957 | -4,250 | 16,292 | - | |||
Operating lease liabilities | ||||||
-15 | - | - | - | |||
Deferred revenue, non current | ||||||
38,352 | - | - | - | |||
Other long-term liabilities | ||||||
- | 78 | -24 | 48 | |||
Net cash used in operating activities | ||||||
-2,891 | -27,126 | 1,714 | -10,794 | |||
Cash flows from investing activities | ||||||
Purchases of property and equipment | ||||||
3,516 | 663 | 2,275 | 553 | |||
Purchases of marketable securities | ||||||
141,816 | - | - | - | |||
Proceeds from repayment of note receivable | ||||||
- | - | 6,750 | - | |||
Maturities of marketable securities | ||||||
76,017 | - | - | - | |||
Net cash used in investing activities | ||||||
-69,315 | -663 | 4,475 | -553 | |||
Cash flows from financing activities | ||||||
Proceeds from initial public offering of common stock, net of commissions | ||||||
70,646 | - | - | - | |||
Proceeds from issuance of common stock | ||||||
- | - | 2 | - | |||
Deferred offering costs | ||||||
10,122 | 1,660 | - | - | |||
Proceeds from issuance of convertible preferred stock, net of issuance costs | ||||||
- | 89,828 | 19,729 | - | |||
Proceeds from issuance of convertible preferred stock, net of issuance costs | ||||||
- | - | - | 7,426 | |||
Proceeds from issuance of convertible notes, net of issuance costs | ||||||
- | - | 2,496 | 2,478 | |||
Proceeds from issuance of common stock upon exercise of stock options, net | ||||||
803 | 158 | 22 | 81 | |||
Net cash provided by financing activities | ||||||
71,449 | 88,326 | 22,249 | 9,985 | |||
Net increase (decrease) in cash, cash equivalents, and restricted cash | ||||||
-757 | 60,537 | 28,438 | -1,362 | |||
Supplemental disclosures of non-cash investing and financing information | ||||||
Conversion of preferred stock to common stock and additional paid-in capital | ||||||
129,577 | - | - | - | |||
Issuance of Maverick promissory note to Harpoon | ||||||
- | - | - | 6,750 | |||
Derecognition of net liabilities related to Maverick spin-off transaction | ||||||
- | - | - | 281 | |||
Capital transaction with a related party upon extinguishment of Notes | ||||||
- | - | -204 | 337 | |||
Issuance of common stock in exchange for license and services | ||||||
- | - | - | 552 | |||
Reacquisition of unvested common stock on extinguishment of note receivable from stockholder | ||||||
- | - | - | 62 | |||
Purchases of property and equipment included in accrued liabilities | ||||||
16 | 28 | - | 23 | |||
Deferred initial public offering costs included in accounts payable and accrued liabilities | ||||||
- | 1,309 | 78 | 10 | |||
Reclassification of employee stock liability to equity upon vesting | ||||||
133 | - | - | - | |||
Right-of-use asset obtained in exchange for lease obligation | ||||||
8,405 | - | - | - | |||
Modification of operating lease | ||||||
-188 | - | - | - | |||
Tenant improvements provided by landlord | ||||||
5,784 | 6,648 | - | - | |||
Series C Preferred Stock | ||||||
Payments of deferred initial public offering costs | ||||||
- | 256 | - | - | |||
Series C preferred stock issuance costs included in accounts payable and accrued liabilities | ||||||
- | 92 | - | - | |||