| Mar'20 | Dec'19 | Sep'19 | Jun'19 | Mar'19 | Dec'18 | Sep'18 | Jun'18 | Mar'18 |
|---|---|---|---|---|---|---|---|---|
Cash flows from operating activities | ||||||||
Net loss | ||||||||
-27,824 | -24,615 | -21,732 | -19,072 | -19,953 | -14,528 | -11,148 | -9,377 | -8,485 |
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||||
Depreciation and amortization | ||||||||
400 | 400 | 400 | 300 | 400 | 0 | 100 | 39 | 61 |
Stock-based compensation | ||||||||
7,489 | 5,865 | 3,960 | 3,105 | 2,834 | 2,539 | 979 | 438 | 614 |
Net amortization of premiums and discounts on marketable securities | ||||||||
-221 | 581 | 753 | 528 | 802 | 676 | 545 | 89 | 0 |
Noncash lease expense | ||||||||
70 | 68 | 65 | 69 | 73 | 0 | 0 | 0 | 0 |
Changes in operating assets and liabilities: | ||||||||
Prepaid expenses and other current assets | ||||||||
113 | -171 | 1,216 | -188 | -1,320 | -1,217 | 655 | 278 | 1,773 |
Other long-term assets | ||||||||
- | - | - | - | - | 127 | -462 | 30 | -8 |
Accounts payable | ||||||||
3,092 | 1,840 | 857 | -404 | 1,278 | -839 | 1,562 | -654 | 7 |
Accrued expenses and other current liabilities | ||||||||
-1,942 | -1,575 | 2,338 | 1,906 | 1,408 | -574 | 776 | 1,634 | 227 |
Other long-term liabilities | ||||||||
0 | -111 | -103 | -62 | 206 | 310 | 184 | 211 | 0 |
Net cash used in operating activities | ||||||||
-18,600 | -19,100 | -16,200 | -14,421 | -13,279 | -12,649 | -8,352 | -8,108 | -9,341 |
Cash flows from investing activities | ||||||||
Purchases of marketable securities | ||||||||
15,052 | 282,288 | 143,429 | 45,225 | 70,759 | 77,145 | 114,710 | 44,746 | 0 |
Proceeds from maturities of marketable securities | ||||||||
130,500 | 32,500 | 52,000 | 65,000 | 81,000 | 74,500 | 18,000 | 0 | 0 |
Purchases of property and equipment | ||||||||
48 | 74 | 78 | 497 | 121 | 2,685 | 2,611 | 1,633 | 17 |
Net cash provided by investing activities | ||||||||
115,400 | -249,862 | -91,507 | 19,278 | 10,120 | -5,330 | -99,321 | -46,379 | -17 |
Cash flows from financing activities | ||||||||
Proceeds from issuance of common stock, net of issuance costs | ||||||||
- | - | - | - | - | 0 | 138,357 | 0 | 0 |
Proceeds from exercise of stock options | ||||||||
- | - | - | - | - | - | - | - | 0 |
Proceeds from exercise of stock options | ||||||||
33 | 8 | 1,934 | 138 | 368 | - | - | - | - |
Proceeds from issuance of common stock under the 2018 ESPP | ||||||||
756 | - | - | - | 595 | - | - | - | - |
Payments for deferred financing costs | ||||||||
- | - | - | - | - | - | - | 1,159 | 447 |
Net cash provided by financing activities | ||||||||
789 | 8 | 380,054 | 138 | 963 | 4 | 140,013 | -818 | -447 |
Net increase (decrease) in cash, cash equivalents and restricted cash | ||||||||
97,575 | -268,965 | 272,348 | 4,993 | -2,196 | -17,975 | 32,340 | -55,305 | -9,805 |
Noncash investing and financing items: | ||||||||
Right-of-use assets obtained in exchange for lease obligations | ||||||||
0 | 0 | 0 | 0 | 6,050 | 0 | 0 | 0 | 0 |
Property and equipment purchased in accounts payable | ||||||||
7 | 0 | 0 | -419 | 419 | -1,402 | 1,701 | 14 | 0 |
Deferred initial public offering costs in accounts payable | ||||||||
- | - | - | - | - | - | - | - | 385 |
Vesting of restricted common stock subject to repurchase | ||||||||
0 | 2 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |