| Mar'20 | Dec'19 | Sep'19 | Jun'19 | Mar'19 | Dec'18 | Sep'18 | Jun'18 | Mar'18 |
|---|---|---|---|---|---|---|---|---|
Operating activities | ||||||||
Net loss | ||||||||
-119,302 | -72,131 | -60,190 | -45,704 | -33,599 | -24,785 | 0 | 0 | 0 |
Adjustments to reconcile net loss to net cash used in operating activities: | ||||||||
Stock-based compensation expense | ||||||||
49,145 | 12,706 | 9,224 | 5,910 | 2,988 | 1,147 | 0 | 0 | 0 |
Depreciation | ||||||||
625 | 492 | 396 | 332 | 195 | 138 | 0 | 0 | 0 |
Accretion of discount on marketable securities | ||||||||
0 | - | - | - | - | - | - | - | - |
Amortization of right-of-use operating lease asset | ||||||||
0 | - | - | - | 0 | - | - | - | - |
Changes in operating assets and liabilities: | ||||||||
Prepaid expenses and other current assets | ||||||||
7,265 | 5,302 | 4,481 | 3,279 | 513 | -88 | 0 | 0 | 0 |
Accounts payable | ||||||||
-720 | 903 | 571 | 2,210 | 752 | -119 | 0 | 0 | 0 |
Accrued expenses and other current liabilities | ||||||||
414 | 522 | 190 | -279 | 1,037 | -945 | 0 | 0 | 0 |
Accrued compensation | ||||||||
1,964 | 5,323 | 2,921 | 1,173 | 678 | 978 | 0 | 0 | 0 |
Operating lease right-of-use assets and liabilities, net | ||||||||
- | - | - | - | - | - | - | 0 | 0 |
Net cash used in operating activities | ||||||||
-75,435 | -57,757 | -51,543 | -40,119 | -28,329 | -23,533 | 0 | 0 | 0 |
Investing activities | ||||||||
Purchases of marketable securities | ||||||||
0 | - | - | - | - | - | - | - | - |
Sales and maturities of marketable securities | ||||||||
0 | - | - | - | - | - | - | - | - |
Purchases of property and equipment | ||||||||
2,165 | 1,744 | 1,064 | 352 | 224 | 302 | 0 | 0 | 0 |
Net cash provided by (used in) investing activities | ||||||||
-351,555 | -361,079 | -251,050 | -171,037 | -224 | -302 | 0 | 0 | 0 |
Financing activities | ||||||||
Costs paid in connection with initial public offering | ||||||||
- | - | - | - | 0 | - | - | - | - |
Proceeds from issuance of common stock | ||||||||
0 | - | - | - | 0 | - | - | - | - |
Proceeds from issuance of common stock from stock option exercises | ||||||||
- | - | - | - | - | - | 0 | 0 | 0 |
Net cash provided by (used in) financing activities | ||||||||
366,817 | 365,995 | 445,806 | 255,550 | 79,028 | 79,831 | 0 | 0 | 0 |
Net decrease in cash and cash equivalents | ||||||||
-60,173 | -52,841 | 143,213 | 44,394 | 50,475 | 55,996 | 0 | 0 | 0 |
Supplemental disclosure of cash flow information: | ||||||||
Cash paid for income taxes | ||||||||
1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 |
Supplemental disclosure of non-cash investing and financing information: | ||||||||
Costs incurred in connection with the initial public offering included in accounts payable and accrued expenses | ||||||||
- | - | - | - | 0 | - | - | - | - |
Operating lease liabilities arising from obtaining right-of-use assets | ||||||||
- | 5,554 | 0 | 0 | 0 | - | - | - | - |