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                    Closing price on 3/11/2016
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        |           
                
                    | Open | 82.00 |  
                    | High | 83.50 |  
                    | Low | 81.00 |  
                    | Volume | 14,200 |  
                    | Split-adjusted Price | 17.29 |  
                
             | 
 |  PTB Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/11/2016 | -0.50 / -0.61% | 82.00 | 83.50 | 81.00 | 81.00 | 82.32 | 17.29 | 14,200 |   |  
            | 3/10/2016 | +3.00 / +3.82% | 79.00 | 82.00 | 79.00 | 81.50 | 81.22 | 17.40 | 30,170 |   |  			
            | 3/9/2016 | -1.50 / -1.88% | 78.50 | 81.00 | 78.50 | 78.50 | 78.86 | 16.76 | 16,700 |   |  
            | 3/8/2016 | 0.00 / 0.00% | 78.00 | 81.50 | 78.00 | 80.00 | 79.26 | 17.08 | 20,540 |   |  			
            | 3/7/2016 | +1.50 / +1.91% | 80.00 | 82.50 | 79.00 | 80.00 | 80.38 | 17.08 | 48,410 |   |  
            | 3/4/2016 | +3.00 / +3.97% | 75.50 | 80.00 | 75.50 | 78.50 | 78.37 | 16.76 | 48,690 |   |  			
            | 3/3/2016 | -1.00 / -1.31% | 77.50 | 77.50 | 75.50 | 75.50 | 76.04 | 16.12 | 25,520 |   |  
            | 3/2/2016 | +2.00 / +2.68% | 74.00 | 77.50 | 74.00 | 76.50 | 76.01 | 16.33 | 60,270 |   |  			
            | 3/1/2016 | -0.50 / -0.67% | 75.00 | 76.00 | 74.00 | 74.50 | 74.55 | 15.91 | 55,160 |   |  
            | 2/29/2016 | +1.50 / +2.04% | 74.50 | 75.00 | 74.00 | 75.00 | 74.45 | 16.01 | 19,370 |   |  			
            | 2/26/2016 | +0.50 / +0.68% | 72.50 | 74.00 | 72.50 | 73.50 | 73.37 | 15.69 | 32,780 |   |  
            | 2/25/2016 | -3.00 / -3.95% | 77.00 | 77.00 | 72.50 | 73.00 | 73.63 | 15.59 | 98,600 |   |  			
            | 2/24/2016 | +3.00 / +4.11% | 74.50 | 76.00 | 73.50 | 76.00 | 74.39 | 16.23 | 32,290 |   |  
            | 2/23/2016 | -11.00 / -13.10% | 72.00 | 76.50 | 72.00 | 73.00 | 73.91 | 15.59 | 63,430 |   |  			
            | 2/22/2016 | +0.50 / +0.60% | 82.50 | 84.00 | 82.00 | 84.00 | 82.89 | 15.30 | 158,380 |   |  
            | 2/19/2016 | -0.50 / -0.60% | 83.00 | 84.00 | 83.00 | 83.50 | 83.86 | 15.21 | 20,080 |   |  			
            | 2/18/2016 | -1.00 / -1.18% | 86.00 | 86.00 | 84.00 | 84.00 | 84.75 | 15.30 | 38,760 |   |  
            | 2/17/2016 | +2.00 / +2.41% | 83.00 | 85.50 | 83.00 | 85.00 | 84.37 | 15.48 | 76,220 |   |  			
            | 2/16/2016 | 0.00 / 0.00% | 83.00 | 83.50 | 81.00 | 83.00 | 82.65 | 15.12 | 18,100 |   |  
            | 2/15/2016 | +4.00 / +5.06% | 79.00 | 84.00 | 77.00 | 83.00 | 79.82 | 15.12 | 74,770 |   |  			
            | 2/5/2016 | +1.50 / +1.94% | 79.00 | 80.00 | 78.00 | 79.00 | 79.22 | 14.39 | 13,090 |   |  
            | 2/4/2016 | -0.50 / -0.64% | 78.00 | 79.50 | 77.50 | 77.50 | 77.99 | 14.12 | 3,180 |   |  			
            | 2/3/2016 | +2.50 / +3.31% | 75.00 | 78.00 | 74.00 | 78.00 | 76.05 | 14.21 | 54,030 |   |  
            | 2/2/2016 | -1.00 / -1.31% | 76.00 | 76.00 | 75.00 | 75.50 | 75.87 | 13.75 | 17,200 |   |  			
            | 2/1/2016 | -2.00 / -2.55% | 78.00 | 78.50 | 76.50 | 76.50 | 77.25 | 13.94 | 35,080 |   |  
            | 1/29/2016 | -1.00 / -1.26% | 79.00 | 79.00 | 78.50 | 78.50 | 78.66 | 14.30 | 29,020 |   |  			
            | 1/28/2016 | -0.50 / -0.63% | 80.50 | 80.50 | 79.00 | 79.50 | 79.60 | 14.48 | 12,280 |   |  
            | 1/27/2016 | +0.50 / +0.63% | 80.00 | 80.00 | 79.00 | 80.00 | 79.54 | 14.57 | 36,310 |   |  			
            | 1/26/2016 | 0.00 / 0.00% | 77.50 | 80.50 | 77.50 | 79.50 | 78.92 | 14.48 | 29,400 |   |  
            | 1/25/2016 | +1.00 / +1.27% | 78.50 | 80.50 | 78.50 | 79.50 | 79.78 | 14.48 | 41,190 |   |  |