Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Cash Flows (Unaudited)

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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Apr. 30, 2023
Apr. 30, 2022
Reconciliation of net loss to net cash used in operating activities:    
Net loss $ (4,661) $ (7,467)
Stock option compensation to employees and directors 2,112 3,598
Stock options and warrants issued to consultants 128 437
Common stock issued to consultants 50 64
Amortization of operating lease right-of-use asset 23 21
Change in operating assets and liabilities:    
Receivables (209)
Prepaid expenses and other current assets 286 (56)
Accounts payable (69) (44)
Accrued expenses (433) (37)
Operating lease liability (22) (19)
Net cash used in operating activities (2,795) (3,503)
Cash flows from investing activities:    
Disbursements to acquire short-term investments (17,406) (4,249)
Proceeds from maturities of short-term investments 13,377 6,349
Net cash (used in) provided by investing activities (4,029) 2,100
Cash flows from financing activities:    
Proceeds from sale of common stock pursuant to employee stock purchase plan 6 7
Proceeds from exercise of stock options 78
Net cash provided by financing activities 84 7
Net decrease in cash and cash equivalents (6,740) (1,396)
Cash and cash equivalents at beginning of period 12,360 29,128
Cash and cash equivalents at end of period $ 5,620 $ 27,732