Quarterly report pursuant to Section 13 or 15(d)

Statements of Stockholders' Equity

v3.19.3
Statements of Stockholders' Equity - USD ($)
$ in Thousands
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Accumulated Other Comprehensive Income (Loss)
Total
Beginning Balance at Dec. 31, 2017 $ 62 $ 392,103 $ (357,490) $ (42) $ 34,633
Balance (in shares) at Dec. 31, 2017 62,310,795        
Increase (Decrease) in Stockholders' Equity          
Stock-based compensation expense   1,498     1,498
Exercise of stock options   57     57
Exercise of stock options (in shares) 88,048        
Issuance of common stock, net of issuance costs $ 6 9,148     9,154
Issuance of common stock, net of issuance costs (in shares) 5,204,893        
Unrealized gain on marketable securities       (4) (4)
Net loss     (9,021)   (9,021)
Ending Balance at Mar. 31, 2018 $ 68 402,806 (366,511) (46) 36,317
Balance (in shares) at Mar. 31, 2018 67,603,736        
Beginning Balance at Dec. 31, 2017 $ 62 392,103 (357,490) (42) 34,633
Balance (in shares) at Dec. 31, 2017 62,310,795        
Increase (Decrease) in Stockholders' Equity          
Net loss         (22,808)
Ending Balance at Sep. 30, 2018 $ 82 428,880 (380,298) (20) 48,644
Balance (in shares) at Sep. 30, 2018 82,323,291        
Beginning Balance at Dec. 31, 2017 $ 62 392,103 (357,490) (42) 34,633
Balance (in shares) at Dec. 31, 2017 62,310,795        
Ending Balance at Dec. 31, 2018 $ 82 429,727 (388,274) (9) $ 41,526
Balance (in shares) at Dec. 31, 2018 82,323,413       82,323,413
Beginning Balance at Mar. 31, 2018 $ 68 402,806 (366,511) (46) $ 36,317
Balance (in shares) at Mar. 31, 2018 67,603,736        
Increase (Decrease) in Stockholders' Equity          
Stock-based compensation expense   1,287     1,287
Exercise of stock options   26     26
Exercise of stock options (in shares) 44,904        
Issuance of common stock, net of issuance costs $ 6 10,338     10,344
Issuance of common stock, net of issuance costs (in shares) 5,859,345        
Unrealized gain on marketable securities       26 26
Net loss     (9,304)   (9,304)
Ending Balance at Jun. 30, 2018 $ 74 414,457 (375,815) (20) 38,696
Balance (in shares) at Jun. 30, 2018 73,507,985        
Increase (Decrease) in Stockholders' Equity          
Stock-based compensation expense   734     734
Issuance of common stock, net of issuance costs $ 8 13,689     13,697
Issuance of common stock, net of issuance costs (in shares) 8,815,306        
Net loss     (4,483)   (4,483)
Ending Balance at Sep. 30, 2018 $ 82 428,880 (380,298) (20) 48,644
Balance (in shares) at Sep. 30, 2018 82,323,291        
Beginning Balance at Dec. 31, 2018 $ 82 429,727 (388,274) (9) $ 41,526
Balance (in shares) at Dec. 31, 2018 82,323,413       82,323,413
Increase (Decrease) in Stockholders' Equity          
Stock-based compensation expense   754     $ 754
Exercise of stock options   21     21
Exercise of stock options (in shares) 30,225        
Issuance of warrants to underwriters in connection with equity offering   347     347
Issuance of common stock, net of issuance costs $ 10 8,886     8,896
Issuance of common stock, net of issuance costs (in shares) 10,000,000        
Unrealized gain on marketable securities       12 12
Net loss     (5,169)   (5,169)
Ending Balance at Mar. 31, 2019 $ 92 439,735 (393,443) 3 46,387
Balance (in shares) at Mar. 31, 2019 92,353,638        
Beginning Balance at Dec. 31, 2018 $ 82 429,727 (388,274) (9) $ 41,526
Balance (in shares) at Dec. 31, 2018 82,323,413       82,323,413
Increase (Decrease) in Stockholders' Equity          
Exercise of stock options (in shares)         30,225
Net loss         $ (18,426)
Ending Balance at Sep. 30, 2019 $ 92 441,187 (406,700) 5 $ 34,584
Balance (in shares) at Sep. 30, 2019 92,581,496       92,581,496
Beginning Balance at Mar. 31, 2019 $ 92 439,735 (393,443) 3 $ 46,387
Balance (in shares) at Mar. 31, 2019 92,353,638        
Increase (Decrease) in Stockholders' Equity          
Stock-based compensation expense   793     793
Shares repurchased by the Company (in shares) (122)        
Issuance of common stock upon vesting of RSUs, net of shares withheld for employee taxes   (104)     (104)
Issuance of common stock upon vesting of RSUs, net of shares withheld for employee taxes (in shares) 213,679        
Unrealized gain on marketable securities       7 7
Net loss     (4,691)   (4,691)
Ending Balance at Jun. 30, 2019 $ 92 440,424 (398,134) 10 42,392
Balance (in shares) at Jun. 30, 2019 92,567,195        
Increase (Decrease) in Stockholders' Equity          
Stock-based compensation expense   768     768
Issuance of common stock upon vesting of RSUs, net of shares withheld for employee taxes   (5)     (5)
Issuance of common stock upon vesting of RSUs, net of shares withheld for employee taxes (in shares) 14,301        
Unrealized gain on marketable securities       (5) (5)
Net loss     (8,566)   (8,566)
Ending Balance at Sep. 30, 2019 $ 92 $ 441,187 $ (406,700) $ 5 $ 34,584
Balance (in shares) at Sep. 30, 2019 92,581,496       92,581,496