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CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (Unaudited) - USD ($)
$ in Thousands
9 Months Ended
Jul. 31, 2026
Jul. 31, 2025
Cash Flows from operating activities:    
Net loss $ (92,480) $ (79,422)
Adjustments to reconcile net loss to net cash used in operating activities    
Non-cash interest expense 533 645
Loss on extinguishment of debt 488  
Loss on impairment of assets 147  
Non-cash lease expense 716 125
Accretion of marketable securities (1,365) (2,645)
Unrealized foreign currency losses 11 28
Share-based compensation expense 14,758 7,040
Depreciation of property and equipment 547 338
Changes in operating assets and liabilities:    
Investment tax credit receivable (49) (378)
Prepaid expenses and other assets (3,908) 3
Accounts payable (4,151) 970
Accrued expenses and other current liabilities 6,943 (1,024)
Lease liabilities (537) 43
Net cash used in operating activities (78,347) (74,277)
Cash flows from investing activities    
Purchases of property and equipment (251) (1,048)
Purchases of marketable securities (261,780) (153,095)
Proceeds from maturities of marketable securities 189,493 88,505
Net cash used in investing activities (72,538) (65,638)
Cash flows from financing activities    
Proceeds from Second Amended Term Loan 25,000  
Repayment of Amended Term Loan principal (23,053) (699)
Payment of issuance costs associated with Second Amended Term Loan (545)  
Proceeds from issuance of pre-funded warrants 23,250  
Proceeds from public offering 126,250  
Payment of issuance cost associated with public offering and pre-funded warrants (9,448)  
Proceeds from exercise of stock options 303 232
Net cash provided by financing activities 141,757 (467)
Effect of exchange rate changes on cash and cash equivalents 1 1
Net decrease in cash and cash equivalents (9,127) (140,381)
Cash and cash equivalents at beginning of period 50,152 173,004
Cash and cash equivalents at end of period 41,025 32,623
Supplemental cash flow information:    
Cash paid for interest 1,590 1,578
Warrant value issued as part of Second Amended Term Loan $ 411  
Right of use assets obtained in exchange for lease liabilities   $ 6,352