| Dec'19 | Sep'19 | Jun'19 | Mar'19 | Dec'18 | Sep'18 | Jun'18 | Mar'18 | Dec'17 | Sep'17 | Jun'17 | Mar'17 | Dec'16 | Sep'16 | Jun'16 | Mar'16 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cash flows from operating activities | |||||||||||||||
Net loss | |||||||||||||||
-36,777 | -24,975 | -21,897 | -19,039 | -16,195 | -16,504 | -15,746 | -16,498 | -15,141 | -15,275 | -12,663 | -11,360 | -10,888 | -8,114 | -4,806 | -5,056 |
Adjustments to reconcile net loss to net cash used in operating activities: | |||||||||||||||
Depreciation and amortization | |||||||||||||||
13 | 543 | 533 | 530 | 411 | 414 | 386 | 386 | 403 | 391 | 384 | 346 | 273 | 332 | 398 | 271 |
Stock-based compensation | |||||||||||||||
3,897 | 3,813 | 3,445 | 2,890 | 2,142 | 1,795 | 1,812 | 1,946 | 1,726 | 1,597 | 1,232 | 1,018 | 505 | 250 | 146 | 125 |
Other, net | |||||||||||||||
0 | -25 | 0 | -49 | - | - | - | - | - | - | - | - | -69 | 4 | 705 | -724 |
Changes in operating assets and liabilities: | |||||||||||||||
Prepaid expenses and other current assets | |||||||||||||||
2,026 | 1,493 | 2,140 | 1,326 | 159 | -644 | 1,226 | -692 | 1,453 | -117 | -299 | -14 | 1,021 | -550 | -1,710 | 2,129 |
Accounts payable and accrued expenses | |||||||||||||||
5,862 | 102 | 1,943 | -887 | 1,883 | -64 | 1,358 | -2,051 | 1,049 | 1,059 | 1,904 | -2,000 | 1,111 | 408 | 2,360 | 139 |
Operating lease liabilities | |||||||||||||||
-141 | -376 | -251 | -239 | - | - | - | - | - | - | - | - | - | - | - | - |
Deferred rent | |||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | 20 | 19 | -326 | -2,102 |
Deferred revenue | |||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | 0 | 0 | -37 | -1,825 |
Other, net | |||||||||||||||
- | - | - | - | -197 | 114 | 110 | -8 | -180 | 104 | 76 | 19 | - | - | - | - |
Net cash used in operating activities | |||||||||||||||
-28,611 | -22,361 | -18,367 | -18,022 | -12,074 | -13,829 | -13,526 | -15,517 | -13,651 | -12,214 | -8,913 | -12,001 | -9,024 | -7,495 | 325 | -5,649 |
Purchase of property and equipment | |||||||||||||||
236 | 213 | 221 | 195 | 119 | 357 | 529 | 29 | 22 | 262 | 649 | 479 | 611 | 1,273 | 3,164 | 57 |
Net cash used in investing activities | |||||||||||||||
-236 | -213 | -221 | -195 | -119 | -357 | -529 | -29 | -22 | -262 | -649 | -479 | -738 | -1,270 | -3,034 | -54 |
Cash flows from financing activities | |||||||||||||||
Proceeds from common stock offering, net of underwriter discounts | |||||||||||||||
- | - | - | - | 140,532 | 0 | 0 | 54,482 | - | - | - | - | - | - | - | - |
Proceeds from sale of property and equipment | |||||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 3 |
Payment of common stock offering costs | |||||||||||||||
0 | -46 | 343 | 243 | 32 | 0 | 176 | 195 | - | - | - | - | - | - | - | - |
Payments related to restricted stock units vesting | |||||||||||||||
0 | 0 | 99 | 484 | - | - | - | - | - | - | - | - | - | - | - | - |
Proceeds from exercises of stock options and ESPP shares | |||||||||||||||
1,237 | 997 | 986 | 769 | - | - | - | - | 22 | 79 | 124 | 41 | - | - | - | - |
Net cash provided by financing activities | |||||||||||||||
1,237 | 141,573 | 544 | 42 | 140,956 | 188 | -10 | 54,287 | -37 | -38 | 794 | 41 | - | - | - | - |
Net change in cash, cash equivalents and restricted cash | |||||||||||||||
-27,610 | 118,999 | -18,044 | -18,175 | 128,763 | -13,998 | -14,065 | 38,741 | -13,710 | -12,514 | -8,768 | -12,439 | - | - | - | -5,703 |
Noncash investing and financing activity: | |||||||||||||||
Common stock offering costs incurred but unpaid at period end | |||||||||||||||
- | - | - | - | - | - | - | 176 | - | - | - | - | - | - | - | - |
Changes in liabilities and prepaid expenses related to fixed asset additions | |||||||||||||||
- | - | - | 93 | - | - | - | 355 | - | - | - | - | - | - | - | - |