Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Changes in Stockholders' Equity

v3.21.2
Consolidated Statements of Changes in Stockholders' Equity - USD ($)
Preferred Stock - Series F [Member]
Preferred Stock - Series G [Member]
Preferred Stock - Series H [Member]
Preferred Stock - Series I [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Deficit [Member]
Total
Balance at Apr. 30, 2019 $ 1,986 $ 33,425,931 $ (26,275,102) $ 7,152,815
Balance, shares at Apr. 30, 2019 1,986,063      
Issuance of preferred stock and warrants for cash, net of offering cost $ 1 2,401,201 2,401,202
Issuance of preferred stock and warrants for cash, net of offering cost, shares 1,250      
Issuance of preferred stock in connection with the Exchange Agreement
Issuance of preferred stock in connection with the Exchange Agreement, shares (127) 127      
Issuance of common stock for cash, net of offering cost $ 357 1,889,898 1,890,255
Issuance of common stock for cash, net of offering cost, shares 357,142      
Issuance of common stock to private placement agent related to sale of common stock $ 25 (25)
Issuance of common stock to private placement agent related to sale of common stock, shares 25,281      
Conversion of preferred stock into common stock $ (1) $ 222 (221)
Conversion of preferred stock into common stock, shares (1,123) (70) 222,018      
Issuance of common stock in connection with the share exchange agreement $ 200 2,019,800 2,020,000
Issuance of common stock in connection with the share exchange agreement, shares 200,000      
Issuance of common stock for services $ 78 572,525 572,603
Issuance of common stock for services, shares 78,153      
Issuance of common stock for accrued services $ 3 26,900 26,903
Issuance of common stock for accrued services, shares 2,862      
Stock options granted for services 196,046 196,046
Stock-based compensation in connection with restricted common stock award grants and restricted common stock unit grants $ 33 497,495 497,528
Stock-based compensation in connection with restricted common stock award grants and restricted common stock unit grants, shares 32,454      
Deemed dividend related to issuance of Series G preferred stock 63,500 (63,500)
Fractional difference due to the reverse stock-split $ (1) (1)
Fractional difference due to the reverse stock-split, shares (580)      
Net loss (5,249,350) (5,249,350)
Balance at Apr. 30, 2020 $ 2,903 41,093,050 (31,587,952) 9,508,001
Balance, shares at Apr. 30, 2020 57 2,903,393      
Issuance of preferred stock and warrants for cash, net of offering cost $ 922 5,529,082 5,530,004
Issuance of preferred stock and warrants for cash, net of offering cost, shares 921,666      
Conversion of preferred stock into common stock $ (107) $ (922) $ 2,011 (982)
Conversion of preferred stock into common stock, shares (57) (106,894) (921,666) 2,010,963      
Issuance of preferred stock and common stock in connection with the Share Exchange Agreement $ 107 $ 581 12,640,292 12,640,980
Issuance of preferred stock and common stock in connection with the Share Exchange Agreement, shares 106,894 581,053      
Issuance of common stock for services $ 163 1,539,201 1,539,364
Issuance of common stock for services, shares 163,076      
Stock options granted for services 194,761 194,761
Stock-based compensation in connection with restricted common stock award grants and restricted common stock unit grants $ 2 1,868,366 1,868,368
Stock-based compensation in connection with restricted common stock award grants and restricted common stock unit grants, shares 1,875      
Common stock to be issued for cash $ 914 8,998,163 8,999,077
Common stock to be issued for cash,shares 914,136      
Issuance of common stock for prepaid services $ 8 106,242 106,250
Issuance of common stock for prepaid services,shares 8,231      
Issuance of common stock for exercise of warrants $ 483 2,499,511 2,499,994
Issuance of common stock for exercise of warrants, shares 482,894      
Net loss (12,387,094) (12,387,094)
Balance at Apr. 30, 2021 $ 7,065 $ 74,467,686 $ (43,975,046) $ 30,499,705
Balance, shares at Apr. 30, 2021 7,065,621