| 
    
        
            | 
                    Closing price on 10/28/2015
                 |  |  
    
        |           
                
                    | Open | 70.00 |  
                    | High | 73.00 |  
                    | Low | 70.00 |  
                    | Volume | 73,120 |  
                    | Split-adjusted Price | 12.93 |  
                
             | 
 |  PTB Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 10/28/2015 | +0.50 / +0.71% | 70.00 | 73.00 | 70.00 | 71.00 | 71.61 | 12.93 | 73,120 |   |  
            | 10/27/2015 | +4.50 / +6.82% | 65.50 | 70.50 | 65.50 | 70.50 | 67.91 | 12.84 | 96,720 |   |  			
            | 10/26/2015 | -1.00 / -1.49% | 66.50 | 66.50 | 65.50 | 66.00 | 66.11 | 12.02 | 87,510 |   |  
            | 10/23/2015 | +2.00 / +3.08% | 65.50 | 68.00 | 65.50 | 67.00 | 67.08 | 12.20 | 79,440 |   |  			
            | 10/22/2015 | +1.50 / +2.36% | 63.50 | 65.00 | 63.50 | 65.00 | 64.23 | 11.84 | 35,920 |   |  
            | 10/21/2015 | 0.00 / 0.00% | 63.50 | 65.00 | 63.50 | 63.50 | 63.97 | 11.57 | 106,670 |   |  			
            | 10/20/2015 | +2.00 / +3.25% | 62.50 | 64.00 | 62.50 | 63.50 | 63.08 | 11.57 | 104,920 |   |  
            | 10/19/2015 | +3.50 / +6.03% | 59.00 | 62.00 | 59.00 | 61.50 | 61.05 | 11.20 | 146,040 |   |  			
            | 10/16/2015 | +0.50 / +0.87% | 57.50 | 58.50 | 57.50 | 58.00 | 57.94 | 10.57 | 75,960 |   |  
            | 10/15/2015 | -1.00 / -1.71% | 58.00 | 58.50 | 57.50 | 57.50 | 57.78 | 10.47 | 33,920 |   |  			
            | 10/14/2015 | 0.00 / 0.00% | 58.50 | 58.50 | 58.00 | 58.50 | 58.08 | 10.66 | 21,470 |   |  
            | 10/13/2015 | 0.00 / 0.00% | 58.50 | 59.00 | 58.00 | 58.50 | 58.16 | 10.66 | 41,280 |   |  			
            | 10/12/2015 | +1.50 / +2.63% | 57.50 | 59.00 | 57.50 | 58.50 | 58.38 | 10.66 | 106,960 |   |  
            | 10/9/2015 | +0.50 / +0.88% | 57.50 | 58.00 | 56.50 | 57.00 | 57.31 | 10.38 | 61,610 |   |  			
            | 10/8/2015 | +0.50 / +0.89% | 57.00 | 57.00 | 55.50 | 56.50 | 56.05 | 10.29 | 27,600 |   |  
            | 10/7/2015 | -0.50 / -0.88% | 56.50 | 57.00 | 55.50 | 56.00 | 56.09 | 10.20 | 35,250 |   |  			
            | 10/6/2015 | -1.00 / -1.74% | 57.50 | 58.50 | 56.50 | 56.50 | 57.53 | 10.29 | 118,600 |   |  
            | 10/5/2015 | +0.50 / +0.88% | 57.50 | 57.50 | 56.50 | 57.50 | 56.99 | 10.47 | 59,760 |   |  			
            | 10/2/2015 | +2.50 / +4.59% | 54.50 | 58.00 | 53.50 | 57.00 | 56.04 | 10.38 | 137,550 |   |  
            | 10/1/2015 | -0.50 / -0.91% | 54.50 | 54.50 | 53.50 | 54.50 | 53.88 | 9.93 | 66,700 |   |  			
            | 9/30/2015 | 0.00 / 0.00% | 55.00 | 55.00 | 54.50 | 55.00 | 54.68 | 10.02 | 72,940 |   |  
            | 9/29/2015 | +1.00 / +1.85% | 54.00 | 56.00 | 53.50 | 55.00 | 54.50 | 10.02 | 85,600 |   |  			
            | 9/28/2015 | +2.50 / +4.85% | 51.50 | 55.00 | 51.50 | 54.00 | 53.54 | 9.84 | 133,380 |   |  
            | 9/25/2015 | 0.00 / 0.00% | 51.50 | 52.00 | 51.00 | 51.50 | 51.51 | 9.38 | 6,620 |   |  			
            | 9/24/2015 | -0.50 / -0.96% | 51.00 | 51.50 | 51.00 | 51.50 | 51.25 | 9.38 | 1,730 |   |  
            | 9/23/2015 | -0.50 / -0.95% | 51.50 | 52.00 | 51.00 | 52.00 | 51.24 | 9.47 | 5,230 |   |  			
            | 9/22/2015 | +1.50 / +2.94% | 51.00 | 53.00 | 51.00 | 52.50 | 52.25 | 9.56 | 45,400 |   |  
            | 9/21/2015 | +1.10 / +2.20% | 49.90 | 51.50 | 49.80 | 51.00 | 50.51 | 9.29 | 26,330 |   |  			
            | 9/18/2015 | +0.10 / +0.20% | 49.80 | 49.90 | 49.60 | 49.90 | 49.63 | 9.09 | 33,670 |   |  
            | 9/17/2015 | +0.20 / +0.40% | 49.50 | 49.80 | 49.50 | 49.80 | 49.65 | 9.07 | 8,610 |   |  |