Preferred Stock (Tables)

6 Months Ended

Jun. 30, 2016

Fair Value Assumptions Used in Probability Weighted Approach and Monte Carlo Simulation Model

The fair value of the preferred stock was estimated using a probability-weighted approach and a Monte Carlo simulation model. The fair value of the embedded derivatives was estimated using the “with” and “without” method where the preferred stock was first valued with all its features (“with” scenario) and then without derivatives subject to the valuation analysis (“without” scenario). The fair value of the derivatives was then estimated as the difference between the fair value of the preferred stock in the “with” scenario and the preferred stock in the “without” scenario. The model also takes into account, management estimates of clinical success/failure based upon market studies and probability of potential conversion and liquidation events. If these estimates were different, the valuations would change and that change could be material. Inputs to the models included the following:

Risk-free interest rate		0.94	%
Expected dividend rate		0
Expected volatility		68.40	%
Preferred stock conversion limit - percentage of outstanding common stock		19.90	%
Preferred conversion floor price	$	1.00