| Dec'19 | Dec'18 | Dec'17 | ||||
|---|---|---|---|---|---|---|
Cash flows from operating activities: | ||||||
Net loss | ||||||
-31,833 | -34,532 | -25,492 | ||||
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||
Depreciation and amortization expense | ||||||
1,293 | 1,321 | 1,171 | ||||
Stock-based compensation expense | ||||||
3,241 | 3,088 | 1,341 | ||||
Premiums paid on marketable securities | ||||||
- | - | 13 | ||||
Net amortization (accretion) of premiums (discounts) on marketable securities | ||||||
53 | 246 | -17 | ||||
(Gain)/loss on disposal of fixed assets | ||||||
78 | -10 | - | ||||
Non-cash interest expense | ||||||
- | 23 | 20 | ||||
Changes in operating assets and liabilities: | ||||||
Accounts receivable | ||||||
332 | 838 | -98 | ||||
Prepaid expenses and other current assets | ||||||
8 | 250 | 237 | ||||
Operating lease, right-of-use asset | ||||||
-1,365 | - | - | ||||
Other assets | ||||||
427 | 419 | - | ||||
Accounts payable | ||||||
1,664 | 367 | -31 | ||||
Accrued expenses and other current liabilities | ||||||
1,760 | 2,883 | 1,168 | ||||
Deferred rent | ||||||
- | -52 | -2 | ||||
Operating lease liability | ||||||
-1,472 | - | - | ||||
Deferred revenue | ||||||
-16,634 | -3,844 | -3,875 | ||||
Net cash used in operating activities | ||||||
-41,514 | -32,489 | -25,835 | ||||
Cash flows from investing activities: | ||||||
Purchases of property and equipment | ||||||
33 | 549 | 912 | ||||
Proceeds from sale of property and equipment | ||||||
204 | - | - | ||||
Purchases of marketable securities | ||||||
- | 47,682 | 6,500 | ||||
Proceeds from maturities and sales of marketable securities | ||||||
22,988 | 37,700 | 21,000 | ||||
Net cash provided by investing activities | ||||||
23,159 | -10,531 | 13,588 | ||||
Cash flows from financing activities: | ||||||
Proceeds from initial public offering, net of underwriting discounts and commissions | ||||||
- | 66,793 | - | ||||
Proceeds from private placement concurrent with initial public offering | ||||||
- | 5,000 | - | ||||
Proceeds from issuance of common stock upon stock option exercises | ||||||
108 | 609 | 60 | ||||
Payments of initial public offering costs | ||||||
- | 2,056 | 789 | ||||
Net cash provided by financing activities | ||||||
108 | 70,346 | -729 | ||||
Net (decrease) increase in cash, cash equivalents and restricted cash | ||||||
-18,247 | 27,326 | -12,976 | ||||
Supplemental disclosure of noncash investing and financing information: | ||||||
Conversion of convertible redeemable preferred stock into common stock | ||||||
- | 77,154 | - | ||||
Purchases of property and equipment included in accounts payable | ||||||
- | - | 75 | ||||
Deferred offering costs included in accounts payable and accrued expenses | ||||||
- | - | 584 | ||||
Accretion of redeemable convertible preferred stock to redemption value | ||||||
- | 16 | 65 | ||||