v3.26.1
Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income (unaudited) - USD ($)
shares in Millions, $ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Income Statement [Abstract]    
Revenue $ 15.6 $ 188.8
Operating expenses:    
Research and development 60.3 90.8
General and administrative 19.1 26.6
Total operating expenses 79.4 117.4
(Loss) income from operations (63.8) 71.4
Other income    
Other expense, net (0.1) 0.0
Interest income, net 6.4 11.7
Total other income 6.3 11.7
Net (loss) income before income taxes (57.5) 83.1
Income tax expense (0.1) (0.2)
Net (loss) income $ (57.6) $ 82.9
(Loss) earnings per common share    
Basic (in dollars per share) $ (0.90) $ 1.14
Diluted (in dollars per share) $ (0.90) $ 1.14
Weighted average common shares outstanding    
Basic (in shares) 64.0 72.5
Diluted (in shares) 64.0 72.7
Condensed Consolidated Statements of Comprehensive Income (Loss)    
Net (loss) income $ (57.6) $ 82.9
Other comprehensive loss:    
Unrealized (loss) gain on available-for-sale securities (1.6) 0.5
Comprehensive (loss) income $ (59.2) $ 83.4