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CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($)
$ in Thousands
 12 Months Ended
Oct. 31, 2025
Oct. 31, 2024
Operating expenses:    
Research and development $ 94,480 $ 38,315
General and administrative 28,685 23,982
Total operating expenses 123,165 62,297
Loss from operations 123,165 62,297
Other (income) expense, net:    
Interest income (9,426) (10,413)
Interest expense 2,994 2,798
Gain on extinguishment of debt 0 366
Other expenses (income), net 569 113
Total other income, net (5,863) (7,136)
Net loss before income taxes 117,302 55,161
Provision for (recovery of) income taxes 0 (19)
Net loss 117,302 55,142
Other comprehensive loss:    
Unrealized (gain) loss on available-for-sale investments (531) (403)
Total comprehensive loss $ 116,771 $ 54,739
Net loss per share of common shares, basic $ 2.29 $ 1.46
Net loss per share of common shares, diluted $ 2.29 $ 1.46
Weighted-average common shares outstanding, basic 51,119,479 37,782,346
Weighted-average common shares outstanding, diluted 51,119,479 37,782,346