Quarterly report pursuant to Section 13 or 15(d)

Common Stock Warrants (Tables)

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Common Stock Warrants (Tables)
9 Months Ended
Sep. 30, 2018
Equity [Abstract]  
Summary of Warrant Activity

A summary of the Company’s warrant issuance activity and related information for the nine months ended September 30, 2018 is as follows:

 

    Shares     Weighted Average
Exercise
Price
    Weighted
Average
Remaining Contractual Life
 
Outstanding at 12/31/2017     7,194,215     $ 1.74       3.40  
                         
Issued     4,705,833       (1)(2)       2.91  
Outstanding and exercisable at 9/30/2018     11,900,048     $ 1.28       2.73  

Schedule of Assumptions for Warrants

The inputs used in the Black-Scholes-Merton valuation technique to value each of the warrants issued at September 30, 2018 as of their respective issue dates are as follows:

 

Event
Description
  Date     MDVX
Stock Price
    Exercise Price of Warrant     Grant Date Fair Value     Life
of Warrant
    Risk Free Rate of Return (%)     Annualized Volatility Rate (%)  
Private placement     2/26/18     $ 0.51     $ 0.75     $ 0.20       5 years       2.60       55.91  
Short-term debt     3/26/18     $ 0.53     $ 0.75     $ 0.22       5 years       2.64       56.57  
Private placement     5/1/2018     $ 0.44       (1 )   $ 0.11       3 years       2.66       56.92  
Debt conversion     5/15/2018     $ 0.39       (1 )   $ 0.08       3 years       2.75       57.03  
Convertible notes     8/8/2018     $ 0.37       (2 )   $ 0.19       3 years       2.68       104.37  
Convertible notes     9/28/2018     $ 0.40       (2 )   $ 0.21       3 years       2.88       105.07