| Assets | — | — |
| Current assets | — | — |
| Cash and cash equivalents | 69,751a | 176,053a |
| Marketable securities | 238,234a | 303,149a |
| Accounts receivable, net | 46,238a | 5,930a |
| Inventory | 10,212a | 3,103a |
| Prepaid expenses and other current assets | 16,030a | 12,677a |
| Total current assets | 380,465a | 500,912a |
| Long-term marketable securities | 153,933a | 183,386a |
| Property and equipment, net | 19,680a | 17,943a |
| Operating lease right-of-use assets | 6,979a | 6,144a |
| Equity method investment | 4,190a | 1,955a |
| Restricted cash | 624a | 613a |
| Other assets | 21,405a | 14,835a |
| Total assets | 587,276a | 725,788a |
| Liabilities and stockholders’ equity | — | — |
| Current liabilities | — | — |
| Accounts payable | 12,248a | 7,396a |
| Accrued expenses | 86,012a | 65,569a |
| Operating lease liabilities, current | 1,730a | 1,061a |
| Deferred revenue, current | 0a | 4,144a |
| Total current liabilities | 99,990a | 78,170a |
| Operating lease liabilities, long-term | 6,182a | 5,996a |
| Deferred revenue, long-term | 0a | 15,403a |
| Total liabilities | 106,172a | 99,569a |
| Stockholders’ equity | — | — |
| Preferred stock | 0a | 0a |
| Common stock | 7a | 7a |
| Additional paid-in capital | 1,646,537a | 1,524,196a |
| Accumulated deficit | -1,153,165a | -895,034a |
| Treasury stock, at cost | -12,579a | -4,141a |
| Accumulated other comprehensive income (loss) | 304a | 1,191a |
| Total stockholders’ equity | 481,104a | 626,219a |
| Total liabilities and stockholders’ equity | 587,276a | 725,788a |