| 
                 
                    Closing price on 9/17/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    2.80 | 
                 
                
                    | High | 
                    3.00 | 
                 
                
                    | Low | 
                    2.70 | 
                     
                
                    | Volume | 
                    3,400 | 
                                 
                
                    | Split-adjusted Price | 
                    3.00 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PSI Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                9/17/2018
             | 
            
                +0.10 / +3.45%
             |             
            
                2.80
             |           
            
                3.00
             |               
            
                2.70
             |                           
            
                3.00
             | 
            
                2.75
             |                     
            
                3.00
             |                                 
            
                3,400
             |            
            
                 
             |                                       
         
    
        
            | 
                9/14/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.90
             |                                 
            
                3,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/13/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.90
             |                                 
            
                1,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/12/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.90
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/11/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.90
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                9/10/2018
             | 
            
                0.00 / 0.00%
             |             
            
                3.00
             |           
            
                3.00
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.99
             |                     
            
                2.90
             |                                 
            
                700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/7/2018
             | 
            
                +0.10 / +3.57%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.90
             |                                 
            
                2,700
             |            
            
                 
             |                                       
         
    
        
            | 
                9/6/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.80
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/5/2018
             | 
            
                -0.20 / -6.67%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.80
             |                                 
            
                900
             |            
            
                 
             |                                       
         
    
        
            | 
                9/4/2018
             | 
            
                +0.10 / +3.45%
             |             
            
                3.00
             |           
            
                3.00
             |               
            
                3.00
             |                           
            
                3.00
             | 
            
                3.00
             |                     
            
                3.00
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/31/2018
             | 
            
                -0.20 / -6.45%
             |             
            
                2.90
             |           
            
                3.00
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.90
             |                                 
            
                2,200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/30/2018
             | 
            
                0.00 / 0.00%
             |             
            
                3.10
             |           
            
                3.10
             |               
            
                3.10
             |                           
            
                3.10
             | 
            
                3.10
             |                     
            
                3.10
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/29/2018
             | 
            
                0.00 / 0.00%
             |             
            
                3.10
             |           
            
                3.10
             |               
            
                3.10
             |                           
            
                3.10
             | 
            
                3.10
             |                     
            
                3.10
             |                                 
            
                4,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/28/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                3.10
             |               
            
                2.80
             |                           
            
                3.10
             | 
            
                2.82
             |                     
            
                3.10
             |                                 
            
                3,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/27/2018
             | 
            
                0.00 / 0.00%
             |             
            
                3.00
             |           
            
                3.10
             |               
            
                3.00
             |                           
            
                3.10
             | 
            
                3.04
             |                     
            
                3.10
             |                                 
            
                2,600
             |            
            
                 
             |                                       
         
    
        
            | 
                8/24/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                3.10
             |               
            
                2.80
             |                           
            
                3.10
             | 
            
                2.84
             |                     
            
                3.10
             |                                 
            
                700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/23/2018
             | 
            
                0.00 / 0.00%
             |             
            
                3.10
             |           
            
                3.10
             |               
            
                3.10
             |                           
            
                3.10
             | 
            
                3.10
             |                     
            
                3.10
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                8/22/2018
             | 
            
                -0.10 / -3.13%
             |             
            
                3.00
             |           
            
                3.20
             |               
            
                2.90
             |                           
            
                3.10
             | 
            
                2.92
             |                     
            
                3.10
             |                                 
            
                10,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/21/2018
             | 
            
                +0.10 / +3.23%
             |             
            
                3.10
             |           
            
                3.20
             |               
            
                3.00
             |                           
            
                3.20
             | 
            
                3.05
             |                     
            
                3.20
             |                                 
            
                3,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/20/2018
             | 
            
                -0.10 / -3.13%
             |             
            
                3.10
             |           
            
                3.10
             |               
            
                3.10
             |                           
            
                3.10
             | 
            
                3.10
             |                     
            
                3.10
             |                                 
            
                900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/17/2018
             | 
            
                -0.10 / -3.03%
             |             
            
                3.20
             |           
            
                3.30
             |               
            
                3.20
             |                           
            
                3.20
             | 
            
                3.21
             |                     
            
                3.20
             |                                 
            
                2,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/16/2018
             | 
            
                +0.10 / +3.13%
             |             
            
                3.30
             |           
            
                3.30
             |               
            
                3.30
             |                           
            
                3.30
             | 
            
                3.30
             |                     
            
                3.30
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/15/2018
             | 
            
                -0.30 / -8.57%
             |             
            
                3.20
             |           
            
                3.20
             |               
            
                3.20
             |                           
            
                3.20
             | 
            
                3.20
             |                     
            
                3.20
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/14/2018
             | 
            
                0.00 / 0.00%
             |             
            
                3.50
             |           
            
                3.50
             |               
            
                3.50
             |                           
            
                3.50
             | 
            
                3.50
             |                     
            
                3.50
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/13/2018
             | 
            
                +0.20 / +6.06%
             |             
            
                3.10
             |           
            
                3.50
             |               
            
                3.10
             |                           
            
                3.50
             | 
            
                3.20
             |                     
            
                3.50
             |                                 
            
                700
             |            
            
                 
             |                                       
         
    
        
            | 
                8/10/2018
             | 
            
                0.00 / 0.00%
             |             
            
                3.30
             |           
            
                3.50
             |               
            
                3.30
             |                           
            
                3.30
             | 
            
                3.31
             |                     
            
                3.30
             |                                 
            
                3,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/9/2018
             | 
            
                -0.20 / -5.71%
             |             
            
                3.30
             |           
            
                3.30
             |               
            
                3.30
             |                           
            
                3.30
             | 
            
                3.30
             |                     
            
                3.30
             |                                 
            
                250
             |            
            
                 
             |                                       
         
    
        
            | 
                8/8/2018
             | 
            
                -0.20 / -5.41%
             |             
            
                3.40
             |           
            
                3.50
             |               
            
                3.40
             |                           
            
                3.50
             | 
            
                3.45
             |                     
            
                3.50
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/7/2018
             | 
            
                +0.10 / +2.78%
             |             
            
                3.70
             |           
            
                3.70
             |               
            
                3.70
             |                           
            
                3.70
             | 
            
                3.70
             |                     
            
                3.70
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                8/6/2018
             | 
            
                0.00 / 0.00%
             |             
            
                3.60
             |           
            
                3.60
             |               
            
                3.60
             |                           
            
                3.60
             | 
            
                3.60
             |                     
            
                3.60
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
         
    
    
 |