| Assets | — | — |
| Current assets | — | — |
| Cash and cash equivalents | 264.55a | 54.9a |
| Restricted cash | 0.5a | 0a |
| Investment securities, amortized cost of $1,088,561 at December 31, 2024 and $502,681 at December 31, 2023 | 1,089.52a | 503.66a |
| Prepaid expenses and other current assets | 20.82a | 15.6a |
| Total current assets | 1,375.39a | 574.15a |
| Property and equipment, net | 12.07a | 10.88a |
| Operating lease right-of-use assets | 43.51a | 46.55a |
| Investment in Radionetics | 0a | 0.47a |
| Restricted cash, net of current portion | 0.8a | 1.3a |
| Other assets | 2.83a | 2a |
| Total assets | 1,434.59a | 635.35a |
| Liabilities and stockholders’ equity | — | — |
| Current liabilities | — | — |
| Accounts payable and accrued expenses | 21.47a | 23.2a |
| Accrued compensation and related expenses | 28.89a | 14.52a |
| Deferred revenue | 2.18a | 2.06a |
| Operating lease liabilities | 7.15a | 4.17a |
| Total current liabilities | 59.68a | 43.94a |
| Operating lease liabilities, non-current | 44.57a | 47.56a |
| Deferred revenue, non-current | 4.7a | 4.75a |
| Other non-current liabilities | 0.83a | 0a |
| Total liabilities | 109.79a | 96.25a |
| Stockholders’ equity | — | — |
| Preferred stock | 0a | 0a |
| Common stock and paid-in capital | 2,275.95a | 1,191.83a |
| Accumulated other comprehensive income (loss) | 0.96a | 0.98a |
| Accumulated deficit | -952.11a | -653.7a |
| Total stockholders’ equity | 1,324.81a | 539.11a |
| Total liabilities and stockholders’ equity | 1,434.59a | 635.35a |