| 
                 
                    Closing price on 9/10/2015
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    35.30 | 
                 
                
                    | High | 
                    35.30 | 
                 
                
                    | Low | 
                    32.50 | 
                     
                
                    | Volume | 
                    32,640 | 
                                 
                
                    | Split-adjusted Price | 
                    7.90 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
OPC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                9/10/2015
             | 
            
                -0.10 / -0.30%
             |             
            
                35.30
             |           
            
                35.30
             |               
            
                32.50
             |                           
            
                32.90
             | 
            
                32.97
             |                     
            
                7.90
             |                                 
            
                32,640
             |            
            
                 
             |                                       
         
    
        
            | 
                9/9/2015
             | 
            
                +0.60 / +1.85%
             |             
            
                32.90
             |           
            
                33.00
             |               
            
                32.90
             |                           
            
                33.00
             | 
            
                32.95
             |                     
            
                7.93
             |                                 
            
                10,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/8/2015
             | 
            
                +0.40 / +1.25%
             |             
            
                32.00
             |           
            
                32.40
             |               
            
                32.00
             |                           
            
                32.40
             | 
            
                32.33
             |                     
            
                7.78
             |                                 
            
                8,010
             |            
            
                 
             |                                       
         
    
        
            | 
                9/7/2015
             | 
            
                +0.80 / +2.56%
             |             
            
                32.00
             |           
            
                32.40
             |               
            
                32.00
             |                           
            
                32.00
             | 
            
                32.12
             |                     
            
                7.69
             |                                 
            
                1,370
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/4/2015
             | 
            
                +0.20 / +0.65%
             |             
            
                31.20
             |           
            
                31.20
             |               
            
                31.20
             |                           
            
                31.20
             | 
            
                31.20
             |                     
            
                7.50
             |                                 
            
                10
             |            
            
                 
             |                                       
         
    
        
            | 
                9/3/2015
             | 
            
                +0.80 / +2.65%
             |             
            
                30.20
             |           
            
                31.00
             |               
            
                30.20
             |                           
            
                31.00
             | 
            
                30.90
             |                     
            
                7.45
             |                                 
            
                3,010
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/1/2015
             | 
            
                -1.80 / -5.63%
             |             
            
                30.20
             |           
            
                30.20
             |               
            
                30.20
             |                           
            
                30.20
             | 
            
                30.20
             |                     
            
                7.26
             |                                 
            
                10
             |            
            
                 
             |                                       
         
    
        
            | 
                8/31/2015
             | 
            
                0.00 / 0.00%
             |             
            
                32.00
             |           
            
                32.00
             |               
            
                32.00
             |                           
            
                32.00
             | 
            
                32.00
             |                     
            
                7.69
             |                                 
            
                7,060
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/28/2015
             | 
            
                +0.30 / +0.95%
             |             
            
                32.00
             |           
            
                32.00
             |               
            
                32.00
             |                           
            
                32.00
             | 
            
                32.00
             |                     
            
                7.69
             |                                 
            
                30
             |            
            
                 
             |                                       
         
    
        
            | 
                8/27/2015
             | 
            
                0.00 / 0.00%
             |             
            
                31.70
             |           
            
                31.70
             |               
            
                31.70
             |                           
            
                31.70
             | 
            
                31.70
             |                     
            
                7.62
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/26/2015
             | 
            
                +0.20 / +0.63%
             |             
            
                31.70
             |           
            
                31.70
             |               
            
                31.70
             |                           
            
                31.70
             | 
            
                31.70
             |                     
            
                7.62
             |                                 
            
                90
             |            
            
                 
             |                                       
         
    
        
            | 
                8/25/2015
             | 
            
                -0.50 / -1.56%
             |             
            
                30.00
             |           
            
                31.50
             |               
            
                30.00
             |                           
            
                31.50
             | 
            
                30.41
             |                     
            
                7.57
             |                                 
            
                3,880
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/24/2015
             | 
            
                -0.40 / -1.23%
             |             
            
                32.00
             |           
            
                32.00
             |               
            
                32.00
             |                           
            
                32.00
             | 
            
                32.00
             |                     
            
                7.69
             |                                 
            
                12,240
             |            
            
                 
             |                                       
         
    
        
            | 
                8/21/2015
             | 
            
                -0.10 / -0.31%
             |             
            
                32.50
             |           
            
                32.50
             |               
            
                32.00
             |                           
            
                32.40
             | 
            
                32.46
             |                     
            
                7.78
             |                                 
            
                2,280
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/20/2015
             | 
            
                -0.10 / -0.31%
             |             
            
                32.50
             |           
            
                32.50
             |               
            
                32.50
             |                           
            
                32.50
             | 
            
                32.50
             |                     
            
                7.81
             |                                 
            
                1,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/19/2015
             | 
            
                -0.40 / -1.21%
             |             
            
                33.40
             |           
            
                33.40
             |               
            
                32.60
             |                           
            
                32.60
             | 
            
                33.00
             |                     
            
                7.83
             |                                 
            
                1,880
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/18/2015
             | 
            
                +0.80 / +2.48%
             |             
            
                32.20
             |           
            
                33.00
             |               
            
                32.10
             |                           
            
                33.00
             | 
            
                32.54
             |                     
            
                7.93
             |                                 
            
                1,260
             |            
            
                 
             |                                       
         
    
        
            | 
                8/17/2015
             | 
            
                -0.10 / -0.31%
             |             
            
                32.20
             |           
            
                32.20
             |               
            
                32.20
             |                           
            
                32.20
             | 
            
                32.20
             |                     
            
                7.74
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/14/2015
             | 
            
                -0.30 / -0.92%
             |             
            
                32.00
             |           
            
                32.60
             |               
            
                32.00
             |                           
            
                32.30
             | 
            
                32.36
             |                     
            
                7.76
             |                                 
            
                8,900
             |            
            
                 
             |                                       
         
    
        
            | 
                8/13/2015
             | 
            
                0.00 / 0.00%
             |             
            
                32.40
             |           
            
                32.60
             |               
            
                32.40
             |                           
            
                32.60
             | 
            
                32.50
             |                     
            
                7.83
             |                                 
            
                5,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/12/2015
             | 
            
                -0.20 / -0.61%
             |             
            
                33.00
             |           
            
                33.00
             |               
            
                32.60
             |                           
            
                32.60
             | 
            
                32.81
             |                     
            
                7.83
             |                                 
            
                10,210
             |            
            
                 
             |                                       
         
    
        
            | 
                8/11/2015
             | 
            
                0.00 / 0.00%
             |             
            
                32.80
             |           
            
                32.80
             |               
            
                32.80
             |                           
            
                32.80
             | 
            
                32.80
             |                     
            
                7.88
             |                                 
            
                8,760
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/10/2015
             | 
            
                0.00 / 0.00%
             |             
            
                32.80
             |           
            
                32.80
             |               
            
                32.80
             |                           
            
                32.80
             | 
            
                32.80
             |                     
            
                7.88
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                8/7/2015
             | 
            
                -0.20 / -0.61%
             |             
            
                32.80
             |           
            
                32.80
             |               
            
                32.80
             |                           
            
                32.80
             | 
            
                32.80
             |                     
            
                7.88
             |                                 
            
                2,070
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/6/2015
             | 
            
                +0.20 / +0.61%
             |             
            
                33.00
             |           
            
                33.00
             |               
            
                33.00
             |                           
            
                33.00
             | 
            
                33.00
             |                     
            
                7.93
             |                                 
            
                42,800
             |            
            
                 
             |                                       
         
    
        
            | 
                8/5/2015
             | 
            
                0.00 / 0.00%
             |             
            
                32.80
             |           
            
                32.80
             |               
            
                32.80
             |                           
            
                32.80
             | 
            
                32.80
             |                     
            
                7.88
             |                                 
            
                1,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/4/2015
             | 
            
                +0.10 / +0.31%
             |             
            
                32.80
             |           
            
                32.80
             |               
            
                32.70
             |                           
            
                32.80
             | 
            
                32.78
             |                     
            
                7.88
             |                                 
            
                34,620
             |            
            
                 
             |                                       
         
    
        
            | 
                8/3/2015
             | 
            
                -0.10 / -0.30%
             |             
            
                32.60
             |           
            
                32.70
             |               
            
                32.60
             |                           
            
                32.70
             | 
            
                32.65
             |                     
            
                7.86
             |                                 
            
                370
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/31/2015
             | 
            
                -0.20 / -0.61%
             |             
            
                33.00
             |           
            
                33.00
             |               
            
                32.80
             |                           
            
                32.80
             | 
            
                32.90
             |                     
            
                7.88
             |                                 
            
                4,000
             |            
            
                 
             |                                       
         
    
        
            | 
                7/30/2015
             | 
            
                +0.20 / +0.61%
             |             
            
                32.80
             |           
            
                33.00
             |               
            
                32.80
             |                           
            
                33.00
             | 
            
                32.98
             |                     
            
                7.93
             |                                 
            
                39,110
             |  
            
                 
             |                                                              
             
    
         
    
    
 |