| Assets | — | — |
| Current assets | — | — |
| Cash and cash equivalents | 105.68a | 394.58a |
| Marketable securities | 481.7a | 307.43a |
| Restricted cash, current | 0.21a | 1.9a |
| Prepaid expenses and other current assets | 11.73a | 12.44a |
| Total current assets | 599.31a | 716.36a |
| Restricted cash, non-current | 2.42a | 2.42a |
| Marketable securities, non-current | 38.28a | 27.17a |
| Property and equipment, net | 46.46a | 42.73a |
| Operating lease right-of-use assets | 23.79a | 27.1a |
| Prepaid research and development expenses and other long-term assets | 1.08a | 9.36a |
| Total assets | 711.33a | 825.13a |
| Liabilities and stockholders’ equity | — | — |
| Current liabilities | — | — |
| Accounts payable | 2.1a | 2.62a |
| Accrued liabilities | 56.72a | 18.3a |
| Operating lease liabilities, current portion | 7.31a | 7.5a |
| Finance lease liabilities, current portion | 0.23a | 39.28a |
| Contract liability to related party | 59.06a | 50.53a |
| Total current liabilities | 125.41a | 118.24a |
| Operating lease liabilities, net of current portion | 46.54a | 50.84a |
| Contract liabilities, net of current portion to related party | 76a | 170.67a |
| Other non-current liabilities | 8.59a | 0a |
| Total liabilities | 256.54a | 339.75a |
| Stockholders’ equity | — | — |
| Common stock | 0.05a | 0.05a |
| Additional paid-in capital | 950.72a | 874.26a |
| Accumulated other comprehensive income | 0.85a | 0.55a |
| Accumulated deficit | -496.83a | -389.48a |
| Total stockholders’ equity | 454.79a | 485.38a |
| Total liabilities and stockholders’ equity | 711.33a | 825.13a |