| 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 | ||||||||
-207,488 | -184,594 | -154,073 | -146,835 | -240,494 | -211,505 | 0 | 0 | 0 |
Adjustments to reconcile net loss to net cash (used in) provided by operating activities: | ||||||||
Stock-based compensation | ||||||||
52,411 | 46,063 | 38,060 | 29,864 | 26,433 | 18,566 | 0 | 0 | 0 |
Amortization of other intangible assets acquired | ||||||||
603 | 603 | 602 | 602 | 603 | 452 | 0 | 0 | 0 |
Depreciation and amortization | ||||||||
5,773 | 4,424 | 3,117 | 2,292 | 1,592 | 1,048 | 0 | 0 | 0 |
Net amortization/accretion on investment securities | ||||||||
2,580 | 3,596 | 4,297 | 3,321 | 2,259 | 1,036 | 0 | 0 | 0 |
Non-cash rent expense | ||||||||
6,220 | 6,777 | 5,995 | 3,380 | 3,107 | 1,832 | 0 | 0 | 0 |
Benefit from income taxes | ||||||||
0 | - | 0 | 0 | 0 | - | 0 | 0 | 0 |
Share of losses from equity method investments | ||||||||
0 | - | - | - | 0 | - | - | - | - |
Changes in operating assets and liabilities: | ||||||||
Prepaid expenses and other current assets | ||||||||
1,001 | 5,445 | 5,380 | 8,782 | 10,495 | 8,598 | 0 | 0 | 0 |
Other long-term assets | ||||||||
4,243 | 4,374 | 1,639 | 2,237 | 432 | 244 | 0 | 0 | 0 |
Accounts payable | ||||||||
-1,681 | -985 | 2,580 | 8,864 | 8,452 | 8,800 | 0 | 0 | 0 |
Accrued and other current liabilities | ||||||||
6,533 | 6,351 | 6,953 | -553 | 5,446 | 12,138 | 0 | 0 | 0 |
Other long-term liabilities | ||||||||
-2,415 | -2,425 | -1,991 | -1,282 | -711 | 0 | 0 | 0 | 0 |
Net cash used in operating activities | ||||||||
-147,903 | -137,350 | -108,564 | -93,759 | -74,914 | -44,653 | 0 | 0 | 0 |
Cash flows from investing activities: | ||||||||
Purchases of property and equipment | ||||||||
52,621 | 50,791 | 38,000 | 20,977 | 13,657 | 3,234 | 0 | 0 | 0 |
Proceeds from maturities of investments | ||||||||
497,131 | 472,578 | 375,000 | 216,650 | 114,943 | 19,235 | 0 | 0 | 0 |
Purchase of investments | ||||||||
323,246 | 252,628 | 496,839 | 751,063 | 701,704 | 649,307 | 0 | 0 | 0 |
Net cash (used in) provided by investing activities | ||||||||
116,189 | 164,084 | -157,233 | -552,784 | -599,910 | -632,798 | 0 | 0 | 0 |
Cash flows from financing activities: | ||||||||
Proceeds from issuance of common stock, net of commissions and issuance costs | ||||||||
0 | - | - | - | 0 | - | - | - | - |
Proceeds from issuance of common stock and upon exercise of stock options | ||||||||
3,261 | 2,958 | 0 | 0 | 0 | - | - | - | - |
Proceeds from issuance of common stock under the employee stock purchase plan | ||||||||
2,537 | 1,783 | 1,783 | 684 | 684 | 0 | 0 | 0 | 0 |
Net cash provided by financing activities | ||||||||
74,862 | 58,960 | 347,008 | 619,499 | 771,866 | 771,182 | 0 | 0 | 0 |
Net change in cash, cash equivalents and restricted cash | ||||||||
43,148 | 85,694 | 81,211 | -27,044 | 97,042 | 93,731 | 0 | 0 | 0 |
Non-cash investing activities: | ||||||||
Property and equipment purchases in accounts payable and accrued liabilities | ||||||||
3,742 | 4,668 | 9,549 | 16,789 | 8,316 | 3,182 | 0 | 0 | 0 |
Supplemental disclosure: | ||||||||
Cash paid for amounts included in the measurement of lease liabilities | ||||||||
4,568 | 3,563 | 2,213 | 1,187 | 422 | 31 | 0 | 0 | 0 |
Cash received for amounts related to tenant improvement allowances from lessors | ||||||||
0 | - | - | - | 0 | - | - | - | - |