Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Stockholders' Equity (Deficit)

v3.20.4
Consolidated Statements of Stockholders' Equity (Deficit) - USD ($)
$ in Thousands
Restricted Stock Units (RSUs) [Member]
Common Stock [Member]
Restricted Stock Units (RSUs) [Member]
Additional Paid-in Capital [Member]
Restricted Stock Units (RSUs) [Member]
Retained Earnings [Member]
Restricted Stock Units (RSUs) [Member]
January 2019 Public Offering [Member]
Common Stock [Member]
January 2019 Public Offering [Member]
Additional Paid-in Capital [Member]
January 2019 Public Offering [Member]
Retained Earnings [Member]
January 2019 Public Offering [Member]
May 2019 Public Offering [Member]
Common Stock [Member]
May 2019 Public Offering [Member]
Additional Paid-in Capital [Member]
May 2019 Public Offering [Member]
Retained Earnings [Member]
May 2019 Public Offering [Member]
ATM [Member]
Common Stock [Member]
ATM [Member]
Additional Paid-in Capital [Member]
ATM [Member]
Retained Earnings [Member]
ATM [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Balance (in shares) at Dec. 31, 2018                                 38,932,437      
Balance at Dec. 31, 2018                                 $ 39 $ 145,147 $ (95,096) $ 50,090
Stock-based compensation                                 0 4,206 0 4,206
Warrants issued related to Veolia agreement                                 $ 0 5,780 0 $ 5,780
Common stock issued upon RSU vesting (in shares) 854,064                                     533,655
Common stock issued upon RSU vesting $ 1 $ 0 $ 0 $ 1                                
Common stock issued for consulting services (in shares)                                 2,036,279      
Common stock issued for consulting services                                 $ 2 4,925 0 $ 4,927
Common stock issued, net of transaction costs (in shares)         5,175,000       11,000,000                      
Common stock issued, net of transaction costs         $ 5 $ 9,058 $ 0 $ 9,063 $ 11 $ 20,306 $ 0 $ 20,317                
Net loss                                 $ 0 0 (44,795) (44,795)
Balance (in shares) at Dec. 31, 2019                                 57,997,780      
Balance at Dec. 31, 2019                                 $ 58 189,422 (139,891) 49,589
Stock-based compensation                                 $ 0 3,569 0 $ 3,569
Common stock issued upon RSU vesting (in shares) 3,178,337                                     691,820
Common stock issued upon RSU vesting $ 3 $ 0 $ 0 $ 3                                
Common stock issued for consulting services (in shares)                                 67,522      
Common stock issued for consulting services                                 $ 0 64 0 $ 64
Common stock issued, net of transaction costs (in shares)                         3,217,426,000     3,217,426        
Common stock issued, net of transaction costs                         $ 3 $ 3,673 $ 0 $ 3,676        
Net loss                                 $ 0 0 (25,762) (25,762)
Balance (in shares) at Dec. 31, 2020                                 64,461,065      
Balance at Dec. 31, 2020                                 $ 64 $ 196,728 $ (165,653) $ 31,139