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Stockholders' Equity (Tables)
9 Months Ended
Sep. 30, 2018
Stockholders Equity Note [Abstract]  
Schedule of Estimated Fair Value Determined Using Option Pricing Model Assumptions

The warrants are not traded in an active securities market, and as such the estimated the fair value as of September 30, 2018 was determined by using an option pricing model with the following assumptions:

 

 

As of September 30, 2018

 

 

 

As of July 25, 2018

(inception date)

 

Expected term

 

2.3 years

 

 

2.5 years

 

Common stock market price

 

$

0.41

 

$

0.72

 

Risk-free interest rate

 

 

2.83%

 

 

2.70%

 

Expected volatility

 

 

120%

 

 

112%

 

Resulting fair value (per warrant)

 

$

0.21

 

$

0.45

 

 

Summary of Change in Level 3 Warrant Liability Value

The following table summarizes the change in our Level 3 warrant liability value (in thousands):

 

 

 

Nine months ended

 

Warrant liability

 

September 30, 2018

 

Beginning balance

$

3,148

 

Change in fair value

 

(1,676

)

Ending balance

$

1,472