| Dec'19 | Dec'18 | Dec'17 | Dec'16 | |||
|---|---|---|---|---|---|---|
Cash flows from operating activities | ||||||
Net income (loss) | ||||||
-28,208 | -64,257 | -38,707 | -13,700 | |||
Adjustments to reconcile net income (loss) to net cash used in operating activities: | ||||||
Depreciation | ||||||
1,245 | 1,257 | 928 | 655 | |||
Loss on disposal of fixed assets | ||||||
- | -20 | - | - | |||
Net amortization of premiums and discounts on investments | ||||||
222 | 296 | 293 | - | |||
Stock-based compensation | ||||||
4,872 | 3,884 | 1,422 | 668 | |||
Change in deferred rent | ||||||
- | 110 | -159 | 102 | |||
Other non-cash items | ||||||
-103 | - | - | - | |||
Changes in operating assets and liabilities: | ||||||
Accounts receivable | ||||||
-459 | -325 | -267 | 411 | |||
Prepaid expenses and other current assets | ||||||
-2,179 | 1,690 | 1,200 | 245 | |||
Other assets | ||||||
- | 1,132 | -60 | 60 | |||
Accounts payable | ||||||
-3,110 | 7,375 | 1,335 | -325 | |||
Accrued expenses | ||||||
-3,569 | 5,431 | 3,562 | 1,726 | |||
Operating lease assets | ||||||
-1,771 | - | - | - | |||
Operating lease liabilities | ||||||
-1,883 | - | - | - | |||
Deferred revenue | ||||||
-41,381 | -6,243 | -9,894 | 43,178 | |||
Net cash used in operating activities | ||||||
-67,744 | -55,216 | -42,679 | 31,588 | |||
Cash flows from investing activities | ||||||
Maturities of marketable securities | ||||||
27,000 | 88,565 | 47,220 | - | |||
Purchase of marketable securities | ||||||
53,688 | - | 145,701 | - | |||
Purchase of property and equipment | ||||||
605 | 1,370 | 1,143 | 1,084 | |||
Net cash provided by investing activities | ||||||
-27,293 | 87,195 | -99,624 | -1,084 | |||
Cash flows from financing activities | ||||||
Net proceeds from offering of common stock | ||||||
92,162 | - | - | - | |||
Proceeds from exercise of stock options | ||||||
175 | 918 | 452 | 105 | |||
Proceeds from purchases of common stock under ESPP | ||||||
489 | 146 | - | - | |||
Proceeds from issuance of debt, net of issuance costs | ||||||
4,965 | - | - | - | |||
Payments under capital lease obligations | ||||||
87 | - | - | - | |||
Net cash provided by (used in) financing activities | ||||||
97,704 | 1,064 | 68,597 | 58,259 | |||
Increase (decrease) in cash, cash equivalents and restricted cash | ||||||
2,667 | 33,043 | -73,706 | 88,763 | |||
Supplemental disclosures of non-cash activities: | ||||||
Fair value of common stock retired in exchange for issuance of common stock warrant | ||||||
8,986 | - | - | - | |||
Conversion of preferred stock to common stock upon closing of initial public offering | ||||||
- | - | 94,450 | - | |||
Purchases of property and equipment in accounts payable and accrued expenses | ||||||
- | 317 | 35 | 414 | |||
Debt financing costs in accrued expenses | ||||||
180 | - | - | - | |||
Cash paid for interest | ||||||
132 | - | - | - | |||
Right-of-use assets obtained in exchange for operating lease liabilities | ||||||
4,369 | - | - | - | |||
Right-of-use assets obtained in exchange for financing lease liabilities | ||||||
429 | - | - | - | |||
Purchases of property and equipment reimbursed by landlord | ||||||
- | - | - | 356 | |||
Adjustment to accumulated deficit and deferred revenue upon adoption of Topic 606 | ||||||
- | -2,031 | - | - | |||
IPO | ||||||
Net proceeds from initial public offering | ||||||
- | - | 67,420 | - | |||
Over allotment option | ||||||
Net proceeds from initial public offering | ||||||
- | - | 725 | - | |||
Series B-1 convertible preferred stock | ||||||
Net proceeds from sale of convertible preferred stock | ||||||
- | - | - | 25,272 | |||
Series C-1 convertible preferred stock | ||||||
Net proceeds from sale of convertible preferred stock | ||||||
- | - | - | 32,882 | |||