Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Stockholders' Equity (Unaudited)

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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Total
Beginning balance, value at Dec. 31, 2019 $ 836,000 $ 664,064,000 $ (486,470,000) $ 178,430,000
Beginning balance, shares at Dec. 31, 2019 83,622,135        
Stock option-based compensation expense 1,256,000 1,256,000
Restricted stock-based compensation expense 464,000 464,000
Net loss (48,159,000) (48,159,000)
Other comprehensive income 386,000 386,000
Ending balance, value at Mar. 31, 2020 $ 836,000 665,784,000 (534,629,000) 386,000 132,377,000
Ending balance, shares at Mar. 31, 2020 83,622,135        
Beginning balance, value at Dec. 31, 2020 $ 961,000 672,304,000 (570,704,000) (10,000) 102,551,000
Beginning balance, shares at Dec. 31, 2020 96,131,678        
Stock option-based compensation expense 1,083,000 1,083,000
Restricted stock-based compensation expense 867,000 867,000
Issuance of common stock under open market sale agreement $ 16,000 5,195,000 5,211,000
Issuance of common stock under open market sale agreement, shares 1,578,324        
Issuance of common stock in connection with the exercise of stock options $ 5,000 662,000 667,000
Issuance of common stock in connection with the exercise of stock options, shares 488,204        
Issuance of common stock in connection with restricted share awards, net of cancellations $ 8,000 (8,000)
Issuance of common stock in connection with restricted share awards, net of cancellations, shares 840,727        
Net loss (16,002,000) (16,002,000)
Other comprehensive income 13,000 13,000
Ending balance, value at Mar. 31, 2021 $ 990,000 $ 680,103,000 $ (586,706,000) $ 3,000 $ 94,390,000
Ending balance, shares at Mar. 31, 2021 99,038,933