v3.26.1
Segment Information - Schedule of Research and Development and Selling, General and Administrative Expenses (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting [Line Items]        
Stock compensation $ 14,974 $ 11,993 $ 51,132 $ 41,250
Depreciation and amortization 6,200 5,800 18,100 16,200
Total research and development expense 198,223 162,368 548,679 432,472
Total selling, general and administrative expense 47,123 30,949 134,888 86,264
Income Statement Location [Axis]: us-gaap:ResearchAndDevelopmentExpense        
Segment Reporting [Line Items]        
Stock compensation 8,187 6,898 23,003 21,008
Income Statement Location [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense        
Segment Reporting [Line Items]        
Stock compensation 6,787 5,095 28,129 20,242
Operating Segment        
Segment Reporting [Line Items]        
Candidate costs 126,595 95,007 331,035 243,094
Discovery costs 18,320 21,043 58,645 48,785
Salaries 31,978 26,531 95,563 80,583
Facilities related 7,016 6,457 22,713 20,944
Total research and development expense, excluding non-cash expense 183,909 149,038 507,956 393,406
Salaries 14,083 7,964 38,457 23,152
Professional, outside services, and other 23,274 14,869 61,116 35,811
Facilities related 2,549 2,180 5,708 4,546
Total selling, general and administrative expense, excluding non-cash expense 39,906 25,013 105,281 63,509
Total research and development expense 198,223 162,368 548,679 432,472
Total selling, general and administrative expense 47,123 30,949 134,888 86,264
Operating Segment | Income Statement Location [Axis]: us-gaap:ResearchAndDevelopmentExpense        
Segment Reporting [Line Items]        
Stock compensation 8,149 7,612 22,804 23,049
Depreciation and amortization 6,165 5,718 17,919 16,017
Operating Segment | Income Statement Location [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense        
Segment Reporting [Line Items]        
Stock compensation 6,723 5,431 28,109 21,230
Depreciation and amortization $ 494 $ 505 $ 1,498 $ 1,525