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Common Stock Warrants and Common Stock Warrant Liability (Tables)
12 Months Ended
Dec. 31, 2016
Warrants and Rights Note Disclosure [Abstract]  
Schedule of common stock warrant activity

The table summarizes the common stock warrant activity as of December 31, 2016 as follows:

 

Common Stock Warrants   Number
 of
Warrants
    Date
Issued
    Term   Exercise Price  
Secured Promissory Note     69,333       April 2015     5 years (1)   $ 7.50  
2014/2015 Convertible Notes     131,734       April – November 2015     5 years (1)   $ 7.50  
Other Promissory Notes     69,333       September –December 2015     5 years (1)   $ 7.50  
      270,400                      
University of Arizona     15,000       June 2015     5 years (2)   $ 7.50  
Consulting Agreement     121,228       July 2015     10 years (3)   $ 7.50  
Northern Arizona University     210,526       November 2015     3 years (4)   $ 15.00  
Warrants issued     617,154                      
Warrants exercised     6,667                      
Outstanding at December 31, 2015     610,487                      
Initial Public Offering Underwriter     187,500       December 2016      5 years   $ 9.60  
Marketing and Development Services     100,000       February 2016      5 years(1)   $ 7.50  
Other Advisory Services     40,000       August 2016      3 years(1)   $ 7.50  
Promissory Notes     9,031       March 2016      3 years(1)   $ 7.50  
Warrants issued     336,531                      
Warrants exercised     117,733                      
Outstanding at December 31, 2016     829,285                      

 

  (1) The warrants also terminate, if not exercised, upon the closing of (i) an initial public offering of common stock; or (ii) a liquidation, dissolution or winding up of the Company.

 

  (2) In the event of a terminating change of the Company, as defined in the warrant agreement, the warrant holder would be paid in cash the aggregate fair market value of the warrant shares immediately prior to the consummation of the terminating change event.

 

  (3) The warrant also terminates, if not exercised, (i) two years after the closing of an initial public offering of common stock; or (ii) the closing of a liquidation, dissolution or winding up of the Company.

 

  (4) The warrant also terminates, if not exercised, upon the closing of (i) an initial public offering of common stock; or (ii) a consolidation, merger, sale or other disposition of all or substantially all of the Company’s assets