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12. WARRANTS
 9 Months Ended
Jun. 30, 2018
Warrants Abstract  
WARRANTS

Transactions involving our equity-classified warrants are summarized as follows:

 

   

Number of

shares

    

Weighted-

average

exercise

price

    

Weighted-

average

remaining

contractual

term (in years)

    

Aggregate

intrinsic value (in thousands)

  
Outstanding at September 30, 2017     212,176     $ 6.53              
Issued     100,000       7.50              
Exercised     —       —              
Forfeited     —       —              
Outstanding at June 30, 2018     312,176     $ 6.84       3.80     $ —  
                                 
Exercisable at June 30, 2018     312,176     $ 6.84       3.80     $ —  

  

The following table summarizes outstanding common stock purchase warrants as of June 30, 2018:

 

   

Number of

shares

    

Weighted-

average

exercise

price

   Expiration
               
Exercisable at $7.80 per share     141,676     $ 7.80   September 2021
Exercisable at $4.00 per share     70,500     $ 4.00   September 2022
Exercisable at $7.50 per share     100,000     $ 7.50   October 2022
      312,176       6.84