Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Stockholders' Equity

v3.19.3
Consolidated Statements of Stockholders' Equity - USD ($)
Common Stock [Member]
Additional Paid-In Capital [Member]
Warrants [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Deficit [Member]
Total
Balance at Jul. 31, 2017 $ 216 $ 93,868,034 $ 11,775,807 $ (3,620) $ (94,944,455) $ 10,695,982
Balance, shares at Jul. 31, 2017 2,161,947   904,474      
Exercise of common stock warrants $ 69 14,705,222 $ (4,705,307) 9,999,984
Exercise of common stock warrants, shares 695,339   (695,340)      
Exercise of common stock options $ 3 321,142 321,145
Exercise of common stock options, shares 25,227        
Common stock issued for employee stock purchase plan 35,809 35,809
Common stock issued for employee stock purchase plan, shares 4,060          
Stock-based compensation expense $ 12 8,252,503 8,252,515
Stock-based compensation expense, shares 127,701          
Tax withholdings paid related to net share settlement of equity awards (181,550) (181,550)
At-the-market offering program, net of issuance costs of $299,963 $ 9 825,654 825,663
At-the-market offering program, net of issuance costs of $299,963, shares 89,731          
Public offering on October 25, 2017, net of issuance costs of $901,137 $ 61 4,320,446 $ 2,936,173 7,256,680
Public offering on October 25, 2017, net of issuance costs of $901,137, shares 607,093   491,745      
Warrant Exercise Inducement Offering on November 13, 2017 (195,431) $ 2,465,396     2,269,965
Warrant Exercise Inducement Offering on November 13, 2017, shares     251,571      
Public offering in February 2018, net of issuance costs of $2,249,169 $ 154 20,750,678       20,750,832
Public offering in February 2018, net of issuance costs of $2,249,169, shares 1,533,333          
Cancellation of expired warrants 1,200,742 $ (1,200,742)
Cancellation of expired warrants, shares   (56,645)      
Common stock issued for services $ 11 1,845,940 1,845,951
Common stock issued for services, shares 106,859          
Net loss and comprehensive loss (12,404) (39,136,366) (39,148,770)
Balance at Jul. 31, 2018 $ 535 145,749,189 $ 11,271,327 (16,024) (134,080,821) 22,924,206
Balance, shares at Jul. 31, 2018 5,351,290   895,805      
Repurchase of fractional shares (567) (567)
Repurchase of fractional shares, shares (1,456)          
Exercise of common stock warrants $ 4 566,131 566,135
Exercise of common stock warrants, shares 43,029          
Common stock issued for employee stock purchase plan $ 1 27,290 27,291
Common stock issued for employee stock purchase plan, shares 4,688          
Stock-based compensation expense $ 5 3,364,366 3,364,371
Stock-based compensation expense, shares 54,755          
Tax withholdings paid related to net share settlement of equity awards (32,505) (32,505)
Tax withholdings paid on equity awards (101,480) (101,480)
Tax shares sold to pay for tax withholdings on equity awards 83,246 83,246
Private placement on October 8, 2018, net of issuance costs of $573,189 $ 53 7,446,758 7,446,811
Private placement on October 8, 2018, net of issuance costs of $573,189, shares 533,333          
Private placement on December 6, 2018, net of issuance costs of $304,916 $ 47 6,695,038 6,695,085
Private placement on December 6, 2018, net of issuance costs of $304,916, shares 466,666          
Private placement on May 24, 2019, net of issuance costs of $1,025,655 $ 349 6,377,220 $ 3,599,156 9,976,725
Private placement on May 24, 2019, net of issuance costs of $1,025,655 3,492,063   2,797,618      
Private placement, net of issuance costs of $80,575 $ 61 2,439,293 2,439,354
Private placement, net of issuance costs of $80,575, shares 610,875          
Cancellation of expired warrants 4,060,759 $ (4,060,759)
Cancellation of expired warrants, shares   (61,470)      
Common stock issued for services $ 6 845,988 845,994
Common stock issued for services, shares 60,300          
Modification of equity award $ 2 135,423 135,425
Modification of equity award, shares 17,500          
Net loss and comprehensive loss 185,061 (30,276,053) (30,090,992)
Balance at Jul. 31, 2019 $ 1,063 $ 177,656,149 $ 10,809,724 $ 169,037 $ (164,356,874) $ 24,279,099
Balance, shares at Jul. 31, 2019 10,633,043   3,631,953