| 
                 
                    Closing price on 3/1/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    9.50 | 
                 
                
                    | High | 
                    9.50 | 
                 
                
                    | Low | 
                    8.60 | 
                     
                
                    | Volume | 
                    46,010 | 
                                 
                
                    | Split-adjusted Price | 
                    8.19 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PVO Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/1/2018
             | 
            
                -0.30 / -3.23%
             |             
            
                9.50
             |           
            
                9.50
             |               
            
                8.60
             |                           
            
                9.00
             | 
            
                8.96
             |                     
            
                8.19
             |                                 
            
                46,010
             |            
            
                 
             |                                       
         
    
        
            | 
                2/28/2018
             | 
            
                -0.40 / -4.12%
             |             
            
                9.80
             |           
            
                9.80
             |               
            
                9.10
             |                           
            
                9.30
             | 
            
                9.32
             |                     
            
                8.46
             |                                 
            
                26,434
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/27/2018
             | 
            
                +0.10 / +1.04%
             |             
            
                9.80
             |           
            
                10.20
             |               
            
                9.50
             |                           
            
                9.70
             | 
            
                9.72
             |                     
            
                8.83
             |                                 
            
                65,464
             |            
            
                 
             |                                       
         
    
        
            | 
                2/26/2018
             | 
            
                +1.00 / +11.63%
             |             
            
                8.80
             |           
            
                9.80
             |               
            
                8.60
             |                           
            
                9.60
             | 
            
                9.40
             |                     
            
                8.74
             |                                 
            
                163,166
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/23/2018
             | 
            
                +0.30 / +3.53%
             |             
            
                9.00
             |           
            
                9.00
             |               
            
                8.40
             |                           
            
                8.80
             | 
            
                8.64
             |                     
            
                8.01
             |                                 
            
                37,391
             |            
            
                 
             |                                       
         
    
        
            | 
                2/22/2018
             | 
            
                -0.30 / -3.41%
             |             
            
                8.20
             |           
            
                8.90
             |               
            
                8.20
             |                           
            
                8.50
             | 
            
                8.49
             |                     
            
                7.74
             |                                 
            
                36,260
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/21/2018
             | 
            
                -0.40 / -4.35%
             |             
            
                9.20
             |           
            
                9.20
             |               
            
                8.60
             |                           
            
                8.80
             | 
            
                8.74
             |                     
            
                8.01
             |                                 
            
                62,718
             |            
            
                 
             |                                       
         
    
        
            | 
                2/13/2018
             | 
            
                -0.50 / -5.15%
             |             
            
                9.20
             |           
            
                9.40
             |               
            
                9.00
             |                           
            
                9.20
             | 
            
                9.17
             |                     
            
                8.37
             |                                 
            
                47,814
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/12/2018
             | 
            
                +0.90 / +10.23%
             |             
            
                8.50
             |           
            
                10.00
             |               
            
                8.50
             |                           
            
                9.70
             | 
            
                9.24
             |                     
            
                8.83
             |                                 
            
                22,590
             |            
            
                 
             |                                       
         
    
        
            | 
                2/9/2018
             | 
            
                -0.40 / -4.12%
             |             
            
                8.80
             |           
            
                9.60
             |               
            
                8.50
             |                           
            
                9.30
             | 
            
                8.78
             |                     
            
                8.46
             |                                 
            
                50,360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/8/2018
             | 
            
                -0.10 / -1.02%
             |             
            
                10.80
             |           
            
                10.80
             |               
            
                9.00
             |                           
            
                9.70
             | 
            
                9.99
             |                     
            
                8.83
             |                                 
            
                34,710
             |            
            
                 
             |                                       
         
    
        
            | 
                2/7/2018
             | 
            
                +0.70 / +7.69%
             |             
            
                9.80
             |           
            
                9.80
             |               
            
                9.80
             |                           
            
                9.80
             | 
            
                9.80
             |                     
            
                8.92
             |                                 
            
                15,563
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/6/2018
             | 
            
                +0.10 / +1.11%
             |             
            
                8.50
             |           
            
                9.40
             |               
            
                8.50
             |                           
            
                9.10
             | 
            
                8.59
             |                     
            
                8.28
             |                                 
            
                135,010
             |            
            
                 
             |                                       
         
    
        
            | 
                2/5/2018
             | 
            
                -1.50 / -14.29%
             |             
            
                11.80
             |           
            
                11.80
             |               
            
                9.00
             |                           
            
                9.00
             | 
            
                10.04
             |                     
            
                8.19
             |                                 
            
                270,577
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/2/2018
             | 
            
                +1.40 / +14.89%
             |             
            
                10.80
             |           
            
                10.80
             |               
            
                10.80
             |                           
            
                10.80
             | 
            
                10.80
             |                     
            
                9.83
             |                                 
            
                94,249
             |            
            
                 
             |                                       
         
    
        
            | 
                2/1/2018
             | 
            
                -0.60 / -6.00%
             |             
            
                9.40
             |           
            
                9.40
             |               
            
                9.40
             |                           
            
                9.40
             | 
            
                9.40
             |                     
            
                8.56
             |                                 
            
                41,420
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/31/2018
             | 
            
                +1.30 / +14.94%
             |             
            
                7.40
             |           
            
                10.00
             |               
            
                7.40
             |                           
            
                10.00
             | 
            
                8.20
             |                     
            
                9.10
             |                                 
            
                301,620
             |            
            
                 
             |                                       
         
    
        
            | 
                1/30/2018
             | 
            
                -1.50 / -14.71%
             |             
            
                8.70
             |           
            
                8.70
             |               
            
                8.70
             |                           
            
                8.70
             | 
            
                8.70
             |                     
            
                7.92
             |                                 
            
                48,020
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/29/2018
             | 
            
                -1.70 / -14.29%
             |             
            
                10.20
             |           
            
                10.20
             |               
            
                10.20
             |                           
            
                10.20
             | 
            
                10.20
             |                     
            
                9.28
             |                                 
            
                22,957
             |            
            
                 
             |                                       
         
    
        
            | 
                1/26/2018
             | 
            
                -2.10 / -15.00%
             |             
            
                11.90
             |           
            
                11.90
             |               
            
                11.90
             |                           
            
                11.90
             | 
            
                11.90
             |                     
            
                10.83
             |                                 
            
                59,558
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/25/2018
             | 
            
                -2.20 / -13.58%
             |             
            
                14.00
             |           
            
                14.00
             |               
            
                14.00
             |                           
            
                14.00
             | 
            
                14.00
             |                     
            
                12.74
             |                                 
            
                62,202
             |            
            
                 
             |                                       
         
    
        
            | 
                1/24/2018
             | 
            
                -2.50 / -13.37%
             |             
            
                19.00
             |           
            
                19.00
             |               
            
                16.20
             |                           
            
                16.20
             | 
            
                16.40
             |                     
            
                14.75
             |                                 
            
                130,340
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/23/2018
             | 
            
                +1.30 / +7.47%
             |             
            
                19.80
             |           
            
                19.80
             |               
            
                17.40
             |                           
            
                18.70
             | 
            
                19.04
             |                     
            
                17.02
             |                                 
            
                505,448
             |            
            
                 
             |                                       
         
    
        
            | 
                1/22/2018
             | 
            
                +2.20 / +14.47%
             |             
            
                17.40
             |           
            
                17.40
             |               
            
                16.00
             |                           
            
                17.40
             | 
            
                17.26
             |                     
            
                15.84
             |                                 
            
                468,465
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/19/2018
             | 
            
                +1.60 / +11.76%
             |             
            
                15.20
             |           
            
                15.20
             |               
            
                15.00
             |                           
            
                15.20
             | 
            
                15.16
             |                     
            
                13.83
             |                                 
            
                81,850
             |            
            
                 
             |                                       
         
    
        
            | 
                1/18/2018
             | 
            
                +1.70 / +14.29%
             |             
            
                13.60
             |           
            
                13.60
             |               
            
                12.00
             |                           
            
                13.60
             | 
            
                13.27
             |                     
            
                12.38
             |                                 
            
                585,628
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/17/2018
             | 
            
                +1.50 / +14.42%
             |             
            
                11.90
             |           
            
                11.90
             |               
            
                11.50
             |                           
            
                11.90
             | 
            
                11.89
             |                     
            
                10.83
             |                                 
            
                127,680
             |            
            
                 
             |                                       
         
    
        
            | 
                1/16/2018
             | 
            
                +0.80 / +8.33%
             |             
            
                10.40
             |           
            
                10.40
             |               
            
                10.00
             |                           
            
                10.40
             | 
            
                10.36
             |                     
            
                9.47
             |                                 
            
                223,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/15/2018
             | 
            
                +1.20 / +14.29%
             |             
            
                8.20
             |           
            
                9.60
             |               
            
                8.20
             |                           
            
                9.60
             | 
            
                9.09
             |                     
            
                8.74
             |                                 
            
                336,910
             |            
            
                 
             |                                       
         
    
        
            | 
                1/12/2018
             | 
            
                +0.70 / +9.46%
             |             
            
                8.50
             |           
            
                8.50
             |               
            
                6.30
             |                           
            
                8.10
             | 
            
                8.38
             |                     
            
                7.37
             |                                 
            
                301,580
             |  
            
                 
             |                                                              
             
    
         
    
    
 |