| Dec'19 | Dec'18 | Dec'17 | Dec'16 | Dec'15 | Dec'14 | |
|---|---|---|---|---|---|---|
Operating activities: | ||||||
Net loss | ||||||
-22,987 | -35,231 | -17,322 | -1,673 | 900 | 297 | |
Adjustments to reconcile net loss to net cash provided by (used in) operating activities: | ||||||
Depreciation | ||||||
4,809 | 4,534 | 3,950 | 2,869 | - | - | |
Stock-based compensation | ||||||
18,486 | 11,317 | 7,428 | 2,765 | 1,178 | 1,175 | |
Non-cash restructuring benefit | ||||||
- | -454 | - | - | - | - | |
Accretion of discount or amortization of premium on short-term investments | ||||||
506 | 419 | -70 | -31 | - | - | |
Amortization of debt issuance costs and debt discount | ||||||
206 | 75 | 95 | - | - | - | |
Loss on debt extinguishment | ||||||
-576 | - | - | - | - | - | |
Revaluation of warrant liability | ||||||
- | - | - | -559 | -703 | 398 | |
Amortization and write-off of debt issuance costs | ||||||
- | - | - | 239 | 152 | 182 | |
Deferred income taxes | ||||||
- | -395 | - | - | - | - | |
Depreciation and amortization | ||||||
- | - | - | - | 1,972 | 1,366 | |
Changes in operating assets and liabilities: | ||||||
Accounts receivable | ||||||
5,273 | -3,782 | 4,822 | 4,515 | 3,327 | 3,611 | |
Inventory | ||||||
-10,572 | -2,358 | 19,349 | 15,897 | 2,783 | 799 | |
Prepaid expenses and other assets | ||||||
524 | -473 | -439 | 1,759 | 360 | 159 | |
Deferred revenue | ||||||
-70 | -381 | -196 | 17 | - | - | |
Deferred revenue | ||||||
- | - | - | - | -466 | -896 | |
Deferred rent | ||||||
- | -260 | 1,191 | 86 | 4,601 | -165 | |
Accounts payable | ||||||
1,046 | 326 | -2,836 | 3,883 | 754 | 1,402 | |
Accrued compensation and employee related benefits | ||||||
-1,486 | 1,819 | -1,735 | 3,462 | 1,356 | -817 | |
Operating lease right-of-use assets | ||||||
-2,153 | - | - | - | - | - | |
Operating lease liabilities | ||||||
-3,038 | - | - | - | - | - | |
Accrued liabilities and other liabilities | ||||||
744 | -390 | -2,799 | - | - | - | |
Accrued liabilities | ||||||
- | - | - | 1,554 | 182 | 795 | |
Restructuring liabilities | ||||||
- | 1,069 | - | - | - | - | |
Net cash provided by (used in) operating activities | ||||||
4,708 | -11,777 | -35,886 | -9,497 | - | - | |
Investing activities: | ||||||
Net cash used in operating activities | ||||||
- | - | - | - | 3,456 | -832 | |
Purchases of investments | ||||||
72,413 | 51,651 | 49,125 | 67,103 | - | - | |
Proceeds from maturities of investments | ||||||
61,743 | 52,352 | 77,075 | - | - | - | |
Purchases of property and equipment | ||||||
2,429 | 6,367 | 6,552 | 3,530 | 7,450 | 1,017 | |
Net cash provided by investing activities | ||||||
-13,099 | -5,666 | 21,398 | -70,633 | - | - | |
Financing activities: | ||||||
Proceeds from issuance of 2019 Notes, net of issuance costs | ||||||
83,475 | - | - | - | - | - | |
Premiums paid for Capped Call Transactions | ||||||
10,126 | - | - | - | - | - | |
Principal payments on finance lease obligations | ||||||
522 | 900 | 1,147 | - | - | - | |
Restricted cash | ||||||
- | - | - | - | - | -200 | |
Net cash provided by (used in) investing activities | ||||||
- | - | - | - | -7,450 | -817 | |
Proceeds from public offerings, net of offering costs | ||||||
- | - | - | 108,096 | - | - | |
Payments on capital lease financing obligations | ||||||
- | - | - | 1,229 | 824 | 625 | |
Payments on term and equipment loans | ||||||
28,192 | 2,451 | 2,772 | 65,320 | 6,115 | 2,667 | |
Proceeds from term loans, net of debt issuance costs | ||||||
3,991 | 16,350 | - | 61,436 | 13,899 | - | |
Proceeds from exercise of stock options and employee stock purchase plan | ||||||
9,133 | 2,689 | 4,656 | 600 | 538 | - | |
Proceeds from exercise of stock options | ||||||
- | - | - | - | - | 702 | |
Proceeds from exercise of warrants | ||||||
- | - | - | 62 | - | - | |
Payments of deferred offering costs | ||||||
- | - | 600 | - | 322 | - | |
Net cash provided by financing activities | ||||||
57,759 | 15,688 | 137 | 103,645 | - | - | |
Net increase in cash and cash equivalents | ||||||
49,368 | -1,755 | -14,351 | - | - | - | |
Net cash provided by financing activities | ||||||
- | - | - | - | 7,176 | -2,590 | |
Net increase (decrease) in cash and cash equivalents | ||||||
- | - | - | 23,515 | 3,182 | -4,239 | |
Supplemental disclosure of cash flow information: | ||||||
Cash paid for interest | ||||||
1,612 | 1,179 | 814 | 1,503 | - | - | |
Cash paid for interest | ||||||
- | - | - | - | 973 | 718 | |
Cash paid for income taxes | ||||||
- | - | - | - | - | 21 | |
Supplemental disclosure of non-cashflow information: | ||||||
Accretion on preferred stock | ||||||
- | - | - | 6,258 | 11,301 | 11,301 | |
Vesting of early exercise stock options | ||||||
- | - | - | 167 | 117 | 54 | |
Additions to property and equipment through capital lease | ||||||
- | - | - | 341 | 2,907 | 819 | |
Accrued not yet paid offering costs | ||||||
- | - | - | 626 | 315 | - | |
Purchases of property and equipment not yet paid | ||||||
557 | 513 | 579 | 1,538 | 347 | 381 | |
Disposal of fully depreciated property and equipment | ||||||
1,432 | 3,105 | 592 | - | - | - | |
Write-off of fully depreciated property and equipment | ||||||
- | - | - | 1,571 | 1,913 | - | |
Conversion of convertible preferred stock to common stock | ||||||
- | - | - | 106,084 | - | - | |
Conversion of convertible preferred stock warrants to common stock warrants | ||||||
- | - | - | 505 | - | - | |