| Mar'20 | Dec'19 | Sep'19 | Jun'19 | Mar'19 | Dec'18 | Sep'18 | Jun'18 | Mar'18 | Dec'17 | Sep'17 | Jun'17 | Mar'17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cash flows from operating activities: | ||||||||||||
Net income (loss) | ||||||||||||
-28,020 | -54,789 | -43,570 | -43,914 | -42,008 | -6,597 | 0 | 0 | 0 | - | - | - | - |
Net income (loss) | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | 0 |
Adjustments to reconcile net loss to net cash provided by (used in) operating activities: | ||||||||||||
Depreciation and amortization expense | ||||||||||||
1,812 | 1,785 | 1,689 | 1,570 | 1,456 | 1,347 | 1,289 | 1,217 | 1,127 | 964 | 0 | 0 | 0 |
Stock-based compensation expense | ||||||||||||
6,446 | 5,991 | 5,668 | 5,316 | 5,321 | 5,217 | 4,668 | 6,258 | 5,497 | 4,709 | 0 | 0 | 0 |
Non-cash interest expense related to note payable | ||||||||||||
0 | - | - | - | - | - | - | - | - | - | - | - | - |
Net amortization of premiums and discounts on marketable securities | ||||||||||||
618 | 764 | 836 | 819 | 635 | 377 | 98 | -199 | -422 | -516 | 0 | 0 | 0 |
Realized losses on marketable securities | ||||||||||||
- | - | - | - | - | - | - | - | - | -2 | 0 | 0 | 0 |
Loss on disposal of property and equipment | ||||||||||||
0 | - | - | - | - | -14 | -13 | -13 | -13 | -35 | 0 | 0 | 0 |
Non-cash operating lease cost | ||||||||||||
2,110 | 1,814 | 0 | 0 | 0 | - | - | - | - | - | - | - | - |
Deferred income tax benefit | ||||||||||||
- | - | - | - | - | - | - | - | - | - | 0 | 0 | 0 |
Changes in operating assets and liabilities: | ||||||||||||
Amounts due from related party | ||||||||||||
- | - | - | - | - | - | - | - | - | -5,000 | 0 | 0 | 0 |
Prepaid expenses and other current assets | ||||||||||||
-1,480 | -3,001 | -2,034 | -5,194 | -2,634 | -2,170 | -3,330 | -1,091 | -2,717 | -1,088 | 0 | 0 | 0 |
Other assets | ||||||||||||
117 | -12 | -33 | -4 | 40 | 26 | 0 | 0 | 0 | - | - | - | - |
Accounts payable | ||||||||||||
-2,970 | 583 | -2,275 | -862 | -2,768 | 23 | 367 | 940 | 934 | 285 | 0 | 0 | 0 |
Accrued expenses and other current liabilities | ||||||||||||
2,122 | -710 | 1,139 | 988 | 1,830 | -524 | -1,536 | 484 | -2,259 | 2,945 | 0 | 0 | 0 |
Deferred rent | ||||||||||||
- | - | - | - | - | 52 | 121 | 218 | 125 | -249 | 0 | 0 | 0 |
Operating lease liability | ||||||||||||
-1,487 | -1,778 | 0 | 0 | 0 | - | - | - | - | - | - | - | - |
Other liabilities | ||||||||||||
0 | - | - | - | - | - | - | - | - | - | - | - | - |
Deferred revenue - related party | ||||||||||||
-39,518 | -15,360 | -24,686 | -26,073 | -28,356 | -14,417 | 0 | 0 | 0 | - | - | - | - |
Deferred revenue - related party | ||||||||||||
- | - | - | - | - | - | - | - | - | - | 0 | 0 | 0 |
Net cash used in operating activities | ||||||||||||
-57,408 | -60,140 | -60,744 | -58,497 | -62,541 | -13,222 | 0 | 0 | 0 | - | - | - | - |
Cash flows from investing activities: | ||||||||||||
Net cash provided by (used in) operating activities | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | 0 |
Purchases of property and equipment | ||||||||||||
685 | 1,538 | 2,530 | 2,545 | 2,415 | 2,019 | 1,474 | 1,246 | 1,358 | 1,973 | 0 | 0 | 0 |
Purchases of marketable investments | ||||||||||||
48,696 | 118,347 | 0 | 0 | 0 | - | - | - | - | - | - | - | - |
Proceeds from sales or maturities of marketable securities | ||||||||||||
114,675 | 136,850 | 167,449 | 140,934 | 114,167 | 72,692 | 23,593 | 22,658 | 19,500 | 27,891 | 0 | 0 | 0 |
Net cash provided by (used in) investing activities | ||||||||||||
65,294 | 16,965 | 57,136 | 44,931 | -65,806 | -36,584 | 0 | 0 | 0 | - | - | - | - |
Cash flows from financing activities: | ||||||||||||
Net cash provided by investing activities | ||||||||||||
- | - | - | - | - | - | - | - | - | - | - | - | 0 |
Payments of initial public offering costs | ||||||||||||
- | - | - | - | - | 2,031 | 0 | 0 | 0 | - | - | - | - |
Proceeds from issuance of common stock upon public offering, net | ||||||||||||
0 | - | - | - | - | - | - | - | - | - | - | - | - |
Proceeds from employee stock purchases | ||||||||||||
0 | - | - | - | - | - | - | - | - | - | - | - | - |
Proceeds from exercise of stock options | ||||||||||||
54 | 255 | 539 | 552 | 521 | 467 | 0 | 0 | 0 | - | - | - | - |
Net cash provided by financing activities | ||||||||||||
7,617 | 7,415 | 539 | 552 | 110,485 | 110,376 | 0 | 0 | 0 | - | - | - | - |
Net increase (decrease) in cash and cash equivalents and restricted cash | ||||||||||||
15,503 | -35,760 | -3,069 | -13,014 | -17,862 | 60,570 | 0 | 0 | 0 | - | - | - | - |
Net increase in cash and cash equivalents and restricted cash | ||||||||||||
- | - | - | - | - | - | - | - | - | - | 0 | 0 | 0 |
Supplemental disclosure of cash flow information: | ||||||||||||
Cash paid for interest | ||||||||||||
0 | - | - | - | - | - | - | - | - | - | - | - | - |
Cash paid for income taxes | ||||||||||||
- | - | - | - | - | 28 | 0 | 0 | 0 | - | - | 0 | 0 |
Supplemental disclosure of non-cash investing and financing activities: | ||||||||||||
Additional right-of-use asset and related lease liability | ||||||||||||
0 | - | - | - | - | - | - | - | - | - | - | - | - |
Accretion of redeemable convertible preferred stock to redemption value | ||||||||||||
- | - | - | - | - | 11 | 21 | 31 | 41 | 40 | 0 | 0 | 0 |
Deferred Offering costs included in accounts payable and accrued expenses | ||||||||||||
- | - | - | - | - | - | - | - | 0 | - | - | - | - |
Purchases of property and equipment included in accounts payable and accrued expenses | ||||||||||||
- | - | 382 | 801 | 779 | 692 | 526 | 548 | 333 | 450 | 0 | 0 | 0 |
Reclassification of deposit liability for restricted stock upon vesting of shares | ||||||||||||
- | - | - | - | - | - | - | - | - | 35 | 0 | 0 | 0 |
Landlord incentives for construction of leasehold improvements recorded as deferred rent | ||||||||||||
- | - | - | - | - | - | - | - | - | 2,377 | 0 | 0 | 0 |