Annual report pursuant to Section 13 and 15(d)

Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity

v3.3.1.900
Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity - USD ($)
Series A convertible preferred stock
Series B convertible preferred stock
Series B 1 convertible preferred stock
Series C convertible preferred stock
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Accumulated Other Comprehensive Loss
Total
Balance at Dec. 31, 2013 $ 25,024,373 $ 30,778,700 $ 4,823,079 $ 59,935,986         $ 120,562,138
Balance (in shares) at Dec. 31, 2013 25,074,999 30,800,000 4,750,000 36,764,704          
Increase (Decrease) in Temporary Equity                  
Accretion of Series A, Series B/B-1 and Series C convertible preferred stock to its redemption value $ 1,688 $ 709 $ 23,990 $ 2,134         28,521
Conversion of Series A convertible preferred stock to common stock upon initial public offering $ (25,026,061)               (25,026,061)
Conversion of Series A convertible preferred stock to common stock upon initial public offering (in shares) (25,074,999)                
Conversion of Series B convertible preferred stock to common stock upon initial public offering   $ (30,779,409)             (30,779,409)
Conversion of Series B convertible preferred stock to common stock upon initial public offering (in shares)   (30,800,000)              
Conversion of Series B-1 convertible preferred stock to common stock upon initial public offering     $ (4,847,069)           (4,847,069)
Conversion of Series B-1 convertible preferred stock to common stock upon initial public offering (in shares)     (4,750,000)            
Conversion of Series C convertible preferred stock to common stock upon initial public offering       $ (59,938,120)         (59,938,120)
Conversion of Series C convertible preferred stock to common stock upon initial public offering (in shares)       (36,764,704)          
Balance at Dec. 31, 2013         $ 958 $ 697,283 $ (82,268,850)   (81,570,609)
Balance (in shares) at Dec. 31, 2013         957,756        
Increase (Decrease) in Stockholders' Equity                  
Stock-based compensation expense           2,383,399     2,383,399
Exercise of stock options         $ 186 111,592     111,778
Exercise of stock options (in shares)         186,682        
Accretion of Series A, Series B/B-1 and Series C convertible preferred stock to its redemption value           (28,521)     (28,521)
Conversion of Series A convertible preferred stock to common stock         $ 4,044 25,022,017     25,026,061
Conversion of Series A convertible preferred stock to common stock (in shares)         4,044,354        
Conversion of Series B convertible preferred stock to common stock         $ 4,968 30,774,441     30,779,409
Conversion of Series B convertible preferred stock to common stock (in shares)         4,967,741        
Conversion of Series B-1 convertible preferred stock to common stock         $ 766 4,846,303     4,847,069
Conversion of Series B-1 convertible preferred stock to common stock ( in shares)         766,129        
Conversion of Series C convertible preferred stock to common stock         $ 5,930 59,932,190     59,938,120
Conversion of Series C convertible preferred stock to common stock (in shares)         5,929,789        
Net conversion of preferred stock warrants common stock upon initial public offering (in shares)         20,273        
Net conversion of preferred stock warrants common stock upon initial public offering         $ 20 (20)      
Reclassification of convertible preferred stock warrant liability           145,256     145,256
Issuance of common stock warrants           1,000     1,000
Issuance of common stock, net of issuance costs         $ 22,369 107,267,954     107,290,323
Issuance of common stock (in shares)         22,368,449        
Change in unrealized loss on marketable securities               $ (18,782) (18,782)
Net loss             (49,700,875)   (49,700,875)
Balance at Dec. 31, 2014         $ 39,241 231,152,894 (131,969,725) (18,782) $ 99,203,628
Balance (in shares) at Dec. 31, 2014         39,241,173       39,241,173
Increase (Decrease) in Stockholders' Equity                  
Stock-based compensation expense           3,426,730     $ 3,426,730
Exercise of stock options         $ 384 905,403     905,787
Exercise of stock options (in shares)         384,033        
Net exercise of common stock warrant         $ 2 (2)      
Net exercise of common stock warrant (in shares)         2,397        
Issuance of common stock warrants           4,000     4,000
Issuance of common stock, net of issuance costs         $ 11,175 90,295,459     90,306,634
Issuance of common stock (in shares)         11,175,000        
Change in unrealized loss on marketable securities               (187,074) (187,074)
Net loss     $ (50,528,240)       (50,528,240)   (50,528,240)
Balance at Dec. 31, 2015         $ 50,802 $ 325,784,484 $ (182,497,965) $ (205,856) $ 143,131,465
Balance (in shares) at Dec. 31, 2015         50,802,603       50,802,603