| 
                 
                    Closing price on 12/27/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    4.60 | 
                 
                
                    | High | 
                    5.00 | 
                 
                
                    | Low | 
                    4.60 | 
                     
                
                    | Volume | 
                    2,500 | 
                                 
                
                    | Split-adjusted Price | 
                    4.37 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PVO Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                12/27/2017
             | 
            
                -0.10 / -2.04%
             |             
            
                4.60
             |           
            
                5.00
             |               
            
                4.60
             |                           
            
                4.80
             | 
            
                4.67
             |                     
            
                4.37
             |                                 
            
                2,500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/26/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.00
             |           
            
                5.00
             |               
            
                4.60
             |                           
            
                4.90
             | 
            
                4.66
             |                     
            
                4.46
             |                                 
            
                29,320
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/25/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.90
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                4.46
             |                                 
            
                2,223
             |            
            
                 
             |                                       
         
    
        
            | 
                12/22/2017
             | 
            
                -0.20 / -4.00%
             |             
            
                5.10
             |           
            
                5.10
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.90
             |                     
            
                4.37
             |                                 
            
                22,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/21/2017
             | 
            
                +0.10 / +2.04%
             |             
            
                4.90
             |           
            
                5.10
             |               
            
                4.90
             |                           
            
                5.00
             | 
            
                4.99
             |                     
            
                4.55
             |                                 
            
                12,600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/20/2017
             | 
            
                +0.20 / +4.26%
             |             
            
                4.70
             |           
            
                4.90
             |               
            
                4.70
             |                           
            
                4.90
             | 
            
                4.75
             |                     
            
                4.46
             |                                 
            
                10,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/19/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.70
             |           
            
                4.70
             |               
            
                4.70
             |                           
            
                4.70
             | 
            
                4.70
             |                     
            
                4.28
             |                                 
            
                300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/18/2017
             | 
            
                -0.20 / -4.08%
             |             
            
                4.80
             |           
            
                4.80
             |               
            
                4.70
             |                           
            
                4.70
             | 
            
                4.78
             |                     
            
                4.28
             |                                 
            
                19,650
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/15/2017
             | 
            
                -0.10 / -2.04%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.87
             |                     
            
                4.37
             |                                 
            
                2,000
             |            
            
                 
             |                                       
         
    
        
            | 
                12/14/2017
             | 
            
                +0.10 / +2.08%
             |             
            
                4.60
             |           
            
                4.90
             |               
            
                4.60
             |                           
            
                4.90
             | 
            
                4.66
             |                     
            
                4.46
             |                                 
            
                2,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/13/2017
             | 
            
                -0.10 / -2.04%
             |             
            
                5.00
             |           
            
                5.00
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.84
             |                     
            
                4.37
             |                                 
            
                5,100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/12/2017
             | 
            
                +0.10 / +2.08%
             |             
            
                5.00
             |           
            
                5.00
             |               
            
                4.80
             |                           
            
                4.90
             | 
            
                4.97
             |                     
            
                4.46
             |                                 
            
                15,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/11/2017
             | 
            
                +0.10 / +2.13%
             |             
            
                4.90
             |           
            
                5.00
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.95
             |                     
            
                4.37
             |                                 
            
                24,300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/8/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.40
             |           
            
                4.90
             |               
            
                4.40
             |                           
            
                4.80
             | 
            
                4.67
             |                     
            
                4.37
             |                                 
            
                6,939
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/7/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.70
             |           
            
                4.80
             |               
            
                4.10
             |                           
            
                4.80
             | 
            
                4.30
             |                     
            
                4.37
             |                                 
            
                10,601
             |            
            
                 
             |                                       
         
    
        
            | 
                12/6/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.80
             |           
            
                4.80
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                4.37
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/5/2017
             | 
            
                -0.10 / -2.04%
             |             
            
                4.80
             |           
            
                4.80
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                4.37
             |                                 
            
                2,310
             |            
            
                 
             |                                       
         
    
        
            | 
                12/4/2017
             | 
            
                +0.20 / +4.26%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.90
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                4.46
             |                                 
            
                2,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/1/2017
             | 
            
                -0.20 / -4.08%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.70
             |                           
            
                4.70
             | 
            
                4.74
             |                     
            
                4.28
             |                                 
            
                6,520
             |            
            
                 
             |                                       
         
    
        
            | 
                11/30/2017
             | 
            
                +0.30 / +6.52%
             |             
            
                4.70
             |           
            
                4.90
             |               
            
                4.70
             |                           
            
                4.90
             | 
            
                4.71
             |                     
            
                4.46
             |                                 
            
                3,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/29/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.50
             |           
            
                4.60
             |               
            
                4.50
             |                           
            
                4.60
             | 
            
                4.57
             |                     
            
                4.19
             |                                 
            
                5,900
             |            
            
                 
             |                                       
         
    
        
            | 
                11/28/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.60
             |           
            
                4.60
             |               
            
                4.60
             |                           
            
                4.60
             | 
            
                4.60
             |                     
            
                4.19
             |                                 
            
                1,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/27/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.60
             |                           
            
                4.60
             | 
            
                4.71
             |                     
            
                4.19
             |                                 
            
                1,900
             |            
            
                 
             |                                       
         
    
        
            | 
                11/24/2017
             | 
            
                +0.10 / +2.22%
             |             
            
                4.60
             |           
            
                4.60
             |               
            
                4.60
             |                           
            
                4.60
             | 
            
                4.60
             |                     
            
                4.19
             |                                 
            
                3,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/23/2017
             | 
            
                -0.10 / -2.17%
             |             
            
                4.50
             |           
            
                4.60
             |               
            
                4.50
             |                           
            
                4.50
             | 
            
                4.55
             |                     
            
                4.10
             |                                 
            
                4,600
             |            
            
                 
             |                                       
         
    
        
            | 
                11/22/2017
             | 
            
                +0.20 / +4.55%
             |             
            
                4.50
             |           
            
                4.60
             |               
            
                4.40
             |                           
            
                4.60
             | 
            
                4.51
             |                     
            
                4.19
             |                                 
            
                8,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/21/2017
             | 
            
                -0.10 / -2.22%
             |             
            
                4.40
             |           
            
                4.40
             |               
            
                4.40
             |                           
            
                4.40
             | 
            
                4.40
             |                     
            
                4.00
             |                                 
            
                4,100
             |            
            
                 
             |                                       
         
    
        
            | 
                11/20/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.50
             |           
            
                4.50
             |               
            
                4.50
             |                           
            
                4.50
             | 
            
                4.50
             |                     
            
                4.10
             |                                 
            
                13,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/17/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.40
             |           
            
                4.50
             |               
            
                4.40
             |                           
            
                4.50
             | 
            
                4.46
             |                     
            
                4.10
             |                                 
            
                10,500
             |            
            
                 
             |                                       
         
    
        
            | 
                11/16/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.50
             |           
            
                4.50
             |               
            
                4.30
             |                           
            
                4.50
             | 
            
                4.35
             |                     
            
                4.10
             |                                 
            
                6,100
             |  
            
                 
             |                                                              
             
    
         
    
    
 |