Quarterly report pursuant to Section 13 or 15(d)

CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY

v3.21.2
CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Common stock
Additional Paid-in Capital
Accumulated Other Comprehensive Income (Loss)
Accumulated Deficit
Total
Balance at Dec. 31, 2019 $ 168 $ 1,329,852 $ 23 $ (1,276,228) $ 53,815
Balance (in shares) at Dec. 31, 2019 167,987,850        
Increase (Decrease) in Stockholders' Equity          
Net income (loss)       21,243 21,243
Net unrealized gain (loss) on short-term investments     55   55
Issuance of common stock upon exercise of options $ 1 1,335     1,336
Issuance of common stock upon exercise of options (in shares) 581,675        
Stock-based compensation expense   2,050     2,050
Balance at Mar. 31, 2020 $ 169 1,333,237 78 (1,254,985) 78,499
Balance (in shares) at Mar. 31, 2020 168,569,525        
Balance at Dec. 31, 2019 $ 168 1,329,852 23 (1,276,228) 53,815
Balance (in shares) at Dec. 31, 2019 167,987,850        
Increase (Decrease) in Stockholders' Equity          
Net income (loss)         (10,507)
Net unrealized gain (loss) on short-term investments         (21)
Balance at Sep. 30, 2020 $ 169 1,337,519 2 (1,286,735) 50,955
Balance (in shares) at Sep. 30, 2020 168,943,434        
Balance at Mar. 31, 2020 $ 169 1,333,237 78 (1,254,985) 78,499
Balance (in shares) at Mar. 31, 2020 168,569,525        
Increase (Decrease) in Stockholders' Equity          
Net income (loss)       (17,576) (17,576)
Net unrealized gain (loss) on short-term investments     (32)   (32)
Issuance of common stock upon exercise of options   541     541
Issuance of common stock upon exercise of options (in shares) 348,098        
Stock-based compensation expense   1,778     1,778
Balance at Jun. 30, 2020 $ 169 1,335,556 46 (1,272,561) 63,210
Balance (in shares) at Jun. 30, 2020 168,917,623        
Increase (Decrease) in Stockholders' Equity          
Net income (loss)       (14,174) (14,174)
Net unrealized gain (loss) on short-term investments     (44)   (44)
Issuance of common stock upon exercise of options   52     52
Issuance of common stock upon exercise of options (in shares) 25,811        
Stock-based compensation expense   1,911     1,911
Balance at Sep. 30, 2020 $ 169 1,337,519 2 (1,286,735) 50,955
Balance (in shares) at Sep. 30, 2020 168,943,434        
Balance at Dec. 31, 2020 $ 169 1,339,833 (4) (1,305,972) 34,026
Balance (in shares) at Dec. 31, 2020 169,316,782        
Increase (Decrease) in Stockholders' Equity          
Net income (loss)       39,500 39,500
Net unrealized gain (loss) on short-term investments     3   3
Issuance of common stock upon exercise of options $ 1 2,096     2,097
Issuance of common stock upon exercise of options (in shares) 813,854        
Stock-based compensation expense   2,672     2,672
Balance at Mar. 31, 2021 $ 170 1,344,601 (1) (1,266,472) 78,298
Balance (in shares) at Mar. 31, 2021 170,130,636        
Balance at Dec. 31, 2020 $ 169 1,339,833 (4) (1,305,972) 34,026
Balance (in shares) at Dec. 31, 2020 169,316,782        
Increase (Decrease) in Stockholders' Equity          
Net income (loss)         4,727
Net unrealized gain (loss) on short-term investments         12
Balance at Sep. 30, 2021 $ 171 1,350,736 8 (1,301,245) 49,670
Balance (in shares) at Sep. 30, 2021 170,969,748        
Balance at Mar. 31, 2021 $ 170 1,344,601 (1) (1,266,472) 78,298
Balance (in shares) at Mar. 31, 2021 170,130,636        
Increase (Decrease) in Stockholders' Equity          
Net income (loss)       (13,821) (13,821)
Net unrealized gain (loss) on short-term investments     8   8
Issuance of common stock upon exercise of options $ 1 1,318     1,319
Issuance of common stock upon exercise of options (in shares) 711,847        
Stock-based compensation expense   2,306     2,306
Balance at Jun. 30, 2021 $ 171 1,348,225 7 (1,280,293) 68,110
Balance (in shares) at Jun. 30, 2021 170,842,483        
Increase (Decrease) in Stockholders' Equity          
Net income (loss)       (20,952) (20,952)
Net unrealized gain (loss) on short-term investments     1   1
Issuance of common stock upon exercise of options   274     274
Issuance of common stock upon exercise of options (in shares) 127,265        
Stock-based compensation expense   2,237     2,237
Balance at Sep. 30, 2021 $ 171 $ 1,350,736 $ 8 $ (1,301,245) $ 49,670
Balance (in shares) at Sep. 30, 2021 170,969,748