| 
                 
                    Closing price on 6/11/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    5.50 | 
                 
                
                    | High | 
                    5.50 | 
                 
                
                    | Low | 
                    5.50 | 
                     
                
                    | Volume | 
                    3,200 | 
                                 
                
                    | Split-adjusted Price | 
                    5.01 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PVO Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/11/2018
             | 
            
                +0.10 / +1.85%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.50
             |                           
            
                5.50
             | 
            
                5.50
             |                     
            
                5.01
             |                                 
            
                3,200
             |            
            
                 
             |                                       
         
    
        
            | 
                6/8/2018
             | 
            
                +0.10 / +1.85%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.30
             |                           
            
                5.50
             | 
            
                5.43
             |                     
            
                5.01
             |                                 
            
                12,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/7/2018
             | 
            
                -0.20 / -3.57%
             |             
            
                5.80
             |           
            
                5.80
             |               
            
                5.40
             |                           
            
                5.40
             | 
            
                5.47
             |                     
            
                4.92
             |                                 
            
                20,000
             |            
            
                 
             |                                       
         
    
        
            | 
                6/6/2018
             | 
            
                0.00 / 0.00%
             |             
            
                5.50
             |           
            
                5.90
             |               
            
                5.40
             |                           
            
                5.60
             | 
            
                5.55
             |                     
            
                5.10
             |                                 
            
                15,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/5/2018
             | 
            
                -0.10 / -1.75%
             |             
            
                5.80
             |           
            
                5.80
             |               
            
                5.30
             |                           
            
                5.60
             | 
            
                5.63
             |                     
            
                5.10
             |                                 
            
                45,400
             |            
            
                 
             |                                       
         
    
        
            | 
                6/4/2018
             | 
            
                -0.10 / -1.72%
             |             
            
                6.20
             |           
            
                6.20
             |               
            
                5.50
             |                           
            
                5.70
             | 
            
                5.80
             |                     
            
                5.19
             |                                 
            
                14,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/1/2018
             | 
            
                +0.50 / +9.26%
             |             
            
                5.30
             |           
            
                5.90
             |               
            
                5.30
             |                           
            
                5.90
             | 
            
                5.84
             |                     
            
                5.37
             |                                 
            
                41,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/31/2018
             | 
            
                -0.10 / -1.82%
             |             
            
                5.60
             |           
            
                5.60
             |               
            
                5.00
             |                           
            
                5.40
             | 
            
                5.22
             |                     
            
                4.92
             |                                 
            
                27,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/30/2018
             | 
            
                0.00 / 0.00%
             |             
            
                5.80
             |           
            
                5.90
             |               
            
                5.40
             |                           
            
                5.50
             | 
            
                5.59
             |                     
            
                5.01
             |                                 
            
                8,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/29/2018
             | 
            
                +0.40 / +7.84%
             |             
            
                5.20
             |           
            
                5.80
             |               
            
                5.20
             |                           
            
                5.50
             | 
            
                5.52
             |                     
            
                5.01
             |                                 
            
                12,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/28/2018
             | 
            
                -0.50 / -8.93%
             |             
            
                5.20
             |           
            
                5.80
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.24
             |                     
            
                4.64
             |                                 
            
                10,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/25/2018
             | 
            
                -0.30 / -5.17%
             |             
            
                5.80
             |           
            
                5.80
             |               
            
                5.50
             |                           
            
                5.50
             | 
            
                5.59
             |                     
            
                5.01
             |                                 
            
                15,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/24/2018
             | 
            
                -0.10 / -1.69%
             |             
            
                5.80
             |           
            
                6.00
             |               
            
                5.10
             |                           
            
                5.80
             | 
            
                5.47
             |                     
            
                5.28
             |                                 
            
                30,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/23/2018
             | 
            
                +0.10 / +1.72%
             |             
            
                5.80
             |           
            
                5.90
             |               
            
                5.80
             |                           
            
                5.90
             | 
            
                5.85
             |                     
            
                5.37
             |                                 
            
                4,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/22/2018
             | 
            
                -0.40 / -6.45%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.70
             |                           
            
                5.80
             | 
            
                5.77
             |                     
            
                5.28
             |                                 
            
                16,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/21/2018
             | 
            
                0.00 / 0.00%
             |             
            
                6.20
             |           
            
                6.20
             |               
            
                5.70
             |                           
            
                6.20
             | 
            
                5.92
             |                     
            
                5.64
             |                                 
            
                17,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/18/2018
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                6.30
             |               
            
                6.00
             |                           
            
                6.30
             | 
            
                6.22
             |                     
            
                5.73
             |                                 
            
                18,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/17/2018
             | 
            
                0.00 / 0.00%
             |             
            
                6.70
             |           
            
                6.70
             |               
            
                6.10
             |                           
            
                6.30
             | 
            
                6.29
             |                     
            
                5.73
             |                                 
            
                8,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/16/2018
             | 
            
                -0.40 / -5.97%
             |             
            
                6.70
             |           
            
                6.70
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.41
             |                     
            
                5.73
             |                                 
            
                14,200
             |            
            
                 
             |                                       
         
    
        
            | 
                5/15/2018
             | 
            
                +0.40 / +6.35%
             |             
            
                6.00
             |           
            
                6.70
             |               
            
                6.00
             |                           
            
                6.70
             | 
            
                6.54
             |                     
            
                6.10
             |                                 
            
                29,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/14/2018
             | 
            
                0.00 / 0.00%
             |             
            
                7.00
             |           
            
                7.00
             |               
            
                5.70
             |                           
            
                6.30
             | 
            
                5.86
             |                     
            
                5.73
             |                                 
            
                18,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/11/2018
             | 
            
                -0.90 / -12.50%
             |             
            
                6.30
             |           
            
                6.90
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.31
             |                     
            
                5.73
             |                                 
            
                35,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/10/2018
             | 
            
                -0.90 / -11.11%
             |             
            
                7.20
             |           
            
                7.80
             |               
            
                7.20
             |                           
            
                7.20
             | 
            
                7.28
             |                     
            
                6.55
             |                                 
            
                49,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/9/2018
             | 
            
                +0.20 / +2.53%
             |             
            
                8.00
             |           
            
                8.90
             |               
            
                7.60
             |                           
            
                8.10
             | 
            
                8.43
             |                     
            
                7.37
             |                                 
            
                76,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/8/2018
             | 
            
                +0.80 / +11.27%
             |             
            
                7.20
             |           
            
                7.90
             |               
            
                7.20
             |                           
            
                7.90
             | 
            
                7.88
             |                     
            
                7.19
             |                                 
            
                105,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/7/2018
             | 
            
                +0.90 / +14.52%
             |             
            
                6.30
             |           
            
                7.10
             |               
            
                6.30
             |                           
            
                7.10
             | 
            
                6.87
             |                     
            
                6.46
             |                                 
            
                71,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/4/2018
             | 
            
                +0.80 / +14.55%
             |             
            
                5.60
             |           
            
                6.40
             |               
            
                5.60
             |                           
            
                6.30
             | 
            
                6.16
             |                     
            
                5.73
             |                                 
            
                39,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/3/2018
             | 
            
                +0.40 / +7.84%
             |             
            
                5.10
             |           
            
                5.70
             |               
            
                5.10
             |                           
            
                5.50
             | 
            
                5.60
             |                     
            
                5.01
             |                                 
            
                54,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/2/2018
             | 
            
                +0.10 / +2.00%
             |             
            
                5.00
             |           
            
                5.10
             |               
            
                4.70
             |                           
            
                5.10
             | 
            
                4.99
             |                     
            
                4.64
             |                                 
            
                2,700
             |            
            
                 
             |                                       
         
    
        
            | 
                4/27/2018
             | 
            
                +0.40 / +8.70%
             |             
            
                4.90
             |           
            
                5.00
             |               
            
                4.90
             |                           
            
                5.00
             | 
            
                4.97
             |                     
            
                4.55
             |                                 
            
                12,300
             |  
            
                 
             |                                                              
             
    
         
    
    
 |