Quarterly report pursuant to Section 13 or 15(d)

4. Stock Option Plan (Tables)

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4. Stock Option Plan (Tables)
 9 Months Ended
Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock option activity
          Options Outstanding  
    Options Available     Number of Options     Weighted-Average Exercise Price  
Balances at January 1, 2017     420,000       280,000     $ 0.001  
Option pool increase(1)     900,000       —       —  
Granted(2)     (378,592 )     378,592       1.63  
Forfeited     —       —       —  
Exercised     —       —       —  
Balances at December 31, 2017     941,408       658,592       0.94  
Granted(3)     (467,304 )     467,304       6.00  
Forfeited(4)     40,000       (40,000 )     6.00  
Exercised     —       —       —  
Balances at September 30, 2018     514,104       1,085,896       2.93  
Summary of options outstanding
  Exercise Prices     Number of Shares Subject to Options Outstanding  

Weighted Average Remaining Contractual Term

   Number of Shares Subject to Options Fully Vested and Exercisable  

Weighted Average Remaining Contractual Term
  $ 0.001       555,520    8.0 years     389,060   7.8 years
  $ 6.00       530,376    9.8 years     48,155   9.1 years
          1,085,896        437,217