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CONDENSED CONSOLIDATED INTERIM STATEMENTS OF CASH FLOWS - USD ($)
 9 Months Ended
Jun. 30, 2021
Jun. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES    
Loss for the period $ (28,245,962) $ (18,892,028)
Items not affecting cash and cash equivalents:    
Amortization of right-of-use asset 80,665 82,743
Accretion of lease liability 5,497 10,893
Derivative liability loss 470,132 60,242
Interest income (42,719) 0
Finance expense 0 211,079
Unrealized foreign exchange 26,497 15,396
Share-based payments 6,652,613 6,347,186
Income tax recovery 0 (278,000)
Changes in non-cash working capital items:    
Receivables 104,749 12,971
Prepaids 1,145,402 (297,467)
Accounts payable and accrued liabilities 1,770,800 (83,185)
Income tax payable 0 (22,000)
Net cash used in operating activities (18,032,326) (12,832,170)
CASH FLOWS FROM INVESTING ACTIVITIES    
Purchase of short-term investments (57,026,103) 0
Proceeds from short-term investments sold 22,000,000 0
Interest from short-term investments 11,337 0
Net cash used in investing activities (35,014,766) 0
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds on issuance of common shares 149,999,985 0
Share issuance costs (9,229,451) (314,603)
Options exercised 1,186,833 915
Warrants exercised 382 247,864
Shares purchased through employee share purchase plan 89,318 80,714
Lease payments (69,637) (89,096)
Loan principal repaid 0 (3,199,799)
Loan final payment paid 0 (688,000)
Interest and financing costs paid 0 (32,235)
Net cash provided by (used in) financing activities 141,977,430 (3,994,240)
Effect of foreign exchange on cash and cash equivalents (56,920) (14,264)
Change in cash and cash equivalents for the period 88,873,418 (16,840,674)
Cash and cash equivalents, beginning of period 56,320,763 53,322,723
Cash and cash equivalents, end of period $ 145,194,181 $ 36,482,049