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Derivative Financial Instruments - Warrants (Tables) - Black Scholes Option Pricing Method
12 Months Ended
Dec. 31, 2016
Derivative financial instruments  
Schedule of Assumptions Used to Determine the Fair Value of Warrants
The range of assumptions used to determine the fair value of the warrants valued using the Black-Scholes option pricing model during the periods indicated was:
 
 
Year ended December 31
 
2016
 
2015
 
2014
Estimated fair value of Trovagene common stock
$2.10 - $4.65
 
$5.40 - $10.15
 
$3.00 - $6.74
Expected warrant term
2.0 - 2.8 years
 
3.0 - 3.8 years
 
4.0 years
Risk-free interest rate
0.71% - 1.20%
 
0.89% - 1.31%
 
1.38%
Expected volatility
82% - 94%
 
73% - 77%
 
86%
Dividend yield
—%
 
—%
 
—%
Schedule of Components of Changes in the Company’s Derivative Financial Instruments Liability Balance
The following table sets forth the components of changes in the Company’s derivative financial instrumentswarrants liability balance, valued using the Black-Scholes option pricing method, for the periods indicated.
 
Date
 
Description
 
Number of Warrants
 
Derivative
Instrument
Liability
December 31, 2014
 
Balance of derivative financial instrumentswarrants liability
 
1,013,961

 
$
3,006,021

 
 
Exercised warrants
 
(46,666
)
 
(435,365
)
 
 
Change in fair value of warrants during the year recognized as a loss in the statement of operations
 

 
726,421

December 31, 2015
 
Balance of derivative financial instrumentswarrants liability
 
967,295

 
3,297,077

 
 
Change in fair value of warrants during the year recognized as a gain in the statement of operations
 

 
(2,462,137
)
December 31, 2016
 
Balance of derivative financial instrumentswarrants liability
 
967,295

 
$
834,940