Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Changes in Stockholders' Equity

v3.20.2
Consolidated Statements of Changes in Stockholders' Equity - USD ($)
Preferred Stock - Series F [Member]
Preferred Stock - Series G [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Deficit [Member]
Total
Balance at Apr. 30, 2018 $ 1,759 $ 30,927,054 $ (18,228,552) $ 12,700,261
Balance, shares at Apr. 30, 2018 1,759,057      
Issuance of common stock for cash, net of offering cost $ 29 219,767 219,796
Issuance of common stock for cash, net of offering cost, shares 29,007      
Issuance of common stock for salaries $ 57 567,443 567,500
Issuance of common stock for salaries, shares 56,976      
Issuance of common stock for exploration expenses $ 20 183,206 183,226
Issuance of common stock for exploration expenses, shares 19,916      
Issuance of common stock for services $ 120 1,187,880 1,188,000
Issuance of common stock for services, shares 120,187      
Issuance of common stock for accrued services $ 1 12,499 12,500
Issuance of common stock for accrued services, shares 920      
Stock options granted for services 328,082 328,082
Stock-based compensation in connection with restricted common stock award grants and restricted common stock unit grants           880,623
Net loss (8,046,550) (8,046,550)
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 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 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
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 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      
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      
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 $ 41,029,550 $ (31,524,452) $ 9,508,001
Balance, shares at Apr. 30, 2020 57 2,903,393