v3.10.0.1
Consolidated Balance Sheets - USD ($)
Jul. 31, 2018
Jul. 31, 2017
Current assets    
Cash and cash equivalents $ 3,803,627 $ 11,444,676
Prepaid expenses and other current assets 1,643,749 1,068,947
Investment securities 23,174,447
Total Current Assets 28,621,823 12,513,623
Property and equipment, net 1,265,662 2,410,099
Other long-term assets 358,987 309,187
Total Assets 30,246,472 15,232,909
Current liabilities    
Accounts payable and accrued liabilities 4,778,892 3,281,133
Accrued compensation related 1,070,744 114,841
Total Current Liabilities 5,849,636 3,395,974
Other long-term liabilities 1,472,630 1,140,953
Total Liabilities 7,322,266 4,536,927
Commitments and Contingencies (Note 9)
Stockholders' Equity    
Common stock authorized - 160,000,000 common shares with a par value of $0.0001, common stock issued and outstanding - 53,511,626 and 21,618,194 common shares as of July 31, 2018 and July 31, 2017, respectively 5,351 2,162
Additional paid-in capital 145,744,373 93,866,088
Warrants issued and outstanding - 8,958,059 and 9,044,740 warrants as of July 31, 2018 and July 31, 2017, respectively 11,271,327 11,775,807
Accumulated other comprehensive loss (16,024) (3,620)
Accumulated deficit (134,080,821) (94,944,455)
Total Stockholders' Equity 22,924,206 10,695,982
Total Liabilities and Stockholders' Equity $ 30,246,472 $ 15,232,909

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v3.10.0.1
Consolidated Statements of Operations - USD ($)
12 Months Ended
Jul. 31, 2018
Jul. 31, 2017
Income Statement [Abstract]    
Revenue
Expenses:    
Research and development 17,415,520 11,952,748
General and administrative 18,689,839 9,669,481
Loss from operations (36,105,359) (21,622,229)
Other income (expense), net 310,167 173,822
Loss on disposal of property and equipment (875,098)
Warrant inducement expense (2,465,396)
Loss before income taxes (39,135,686) (21,448,407)
Provision for income taxes 680 1,391
Net loss $ (39,136,366) $ (21,449,798)
Basic and diluted net loss per common share $ (0.98) $ (1.06)
Weighted average shares used in computing basic and diluted net loss per common share 40,123,371 20,189,678

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v3.10.0.1
Consolidated Statements of Cash Flows - USD ($)
12 Months Ended
Jul. 31, 2018
Jul. 31, 2017
Operating activities    
Net loss $ (39,136,366) $ (21,449,798)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 334,494 379,988
Loss on disposal of property and equipment 875,098
Warrant inducement expense 2,465,396
Amortization of discount on investments (28,948)
Stock-based compensation 8,252,515 4,016,790
Common stock issued for services 1,845,951
Changes in operating assets and liabilities:    
Prepaid expenses 97,535 (130,926)
Other current assets (593,141) 14,750
Other long-term assets (49,800) (88,473)
Accounts payable and accrued liabilities 1,427,760 (208,281)
Accrued compensation 955,903 (128,083)
Other long-term liabilities 331,677 253,661
Net cash used in operating activities (23,221,926) (17,340,372)
Investing activities    
Purchases of property and equipment (65,156) (21,562)
Purchase of investment securities (25,474,695)
Maturity of investment securities 2,250,000
Net cash used in investing activities (23,289,851) (21,562)
Financing activities    
Proceeds from issuance of common stock through ESPP 35,809
Proceeds from issuance of common stock and warrants 32,283,444
Payment of financing and offering costs (3,575,699) (15,500)
Proceeds from exercise of options 321,145 79,506
Tax withholdings paid related to net share settlement of equity awards (181,550)
Proceeds from exercise of inducement warrants 9,999,983
Net cash provided by financing activities 38,883,132 64,006
Effect of exchange rate changes on cash (12,404) (3,620)
Net decrease in cash (7,641,049) (17,301,548)
Cash and cash equivalents, at beginning of year 11,444,676 28,746,224
Cash and cash equivalents, at end of year 3,803,627 11,444,676
Supplemental disclosure for cash flow information:    
Interest
Income taxes 680 1,391
Noncash investing and financing transactions:    
Expiration of warrants 1,200,742 1,479,274
Amounts accrued for offering costs $ 45,000 $ 256,296

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