| Dec'19 | Dec'18 | Dec'17 | Dec'16 | Dec'15 | ||
|---|---|---|---|---|---|---|
Cash flows from operating activities | ||||||
Net loss | ||||||
-102,688 | -64,943 | -54,439 | -28,864 | -13,943 | ||
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||
Depreciation and amortization | ||||||
1,619 | 1,597 | 1,524 | 1,274 | 897 | ||
Non-cash operating lease expense | ||||||
561 | - | - | - | - | ||
Stock-based compensation | ||||||
14,045 | 7,695 | 5,573 | 1,026 | 152 | ||
Non-cash interest expense with stockholders | ||||||
- | - | - | - | 109 | ||
Loss on debt extinguishment with stockholders | ||||||
- | - | - | - | -602 | ||
Accretion of discount and debt issuance costs of convertible notes with stockholders | ||||||
- | - | - | - | -50 | ||
Change in fair value of preferred stock tranche rights | ||||||
- | - | - | 960 | -74 | ||
Other, net | ||||||
-74 | 24 | -8 | -84 | 95 | ||
Changes in operating assets and liabilities: | ||||||
Prepaid expenses and other current assets | ||||||
6,985 | 49 | 1,023 | 890 | 392 | ||
Accounts payable and accrued expenses | ||||||
7,020 | 1,126 | 2,012 | 4,018 | 1,102 | ||
Operating lease liabilities | ||||||
-1,007 | - | - | - | - | ||
Deferred rent | ||||||
- | 329 | 415 | -2,389 | -517 | ||
Deferred revenue | ||||||
- | - | - | -1,862 | -883 | ||
Other, net | ||||||
- | 19 | 19 | -22 | 59 | ||
Net cash used in operating activities | ||||||
-87,361 | -54,946 | -46,779 | -21,843 | -12,017 | ||
Purchase of property and equipment | ||||||
865 | 1,034 | 1,412 | 5,105 | 331 | ||
Other, net | ||||||
- | - | - | -9 | -1 | ||
Net cash used in investing activities | ||||||
-865 | -1,034 | -1,412 | -5,096 | -330 | ||
Cash flows from financing activities | ||||||
Proceeds from common stock offering, net of underwriter discounts | ||||||
140,530 | 195,014 | - | 98,009 | - | ||
Payment of common stock offering costs | ||||||
540 | 403 | 176 | 2,110 | - | ||
Payments related to restricted stock units vesting | ||||||
583 | - | - | - | - | ||
Proceeds from issuance of preferred stock | ||||||
- | - | - | 29,250 | 24,142 | ||
Payment of preferred stock issuance costs | ||||||
- | - | - | 22 | 193 | ||
Proceeds from issuance of convertible notes with stockholders | ||||||
- | - | - | - | 5,000 | ||
Proceeds from disgorgement of stockholder's short-swing profits | ||||||
- | - | 670 | - | - | ||
Proceeds from exercises of stock options and ESPP shares | ||||||
3,989 | 784 | 266 | 109 | 84 | ||
Other, net | ||||||
- | 26 | - | - | -5 | ||
Net cash provided by financing activities | ||||||
143,396 | 195,421 | 760 | 125,236 | 29,028 | ||
Net change in cash, cash equivalents and restricted cash | ||||||
55,170 | 139,441 | -47,431 | 98,297 | 16,681 | ||
Noncash operating activity: | ||||||
Operating lease liabilities arising from obtaining right-of-use assets | ||||||
682 | - | - | - | - | ||
Noncash investing and financing activity: | ||||||
Conversion of redeemable convertible preferred stock into common stock | ||||||
- | - | - | 86,483 | - | ||
Gain on extinguishment of Series A redeemable convertible preferred stock | ||||||
- | - | - | - | 1,673 | ||
Common stock offering costs incurred but unpaid at period end | ||||||
35 | 278 | 139 | 232 | - | ||
Changes in liabilities and prepaid expenses related to fixed asset additions | ||||||
329 | 33 | 124 | 127 | 484 | ||