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                    Closing price on 12/17/2015
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                    | Open | 75.00 |  
                    | High | 75.00 |  
                    | Low | 73.50 |  
                    | Volume | 27,600 |  
                    | Split-adjusted Price | 13.66 |  
                
             | 
 |  PTB Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 12/17/2015 | 0.00 / 0.00% | 75.00 | 75.00 | 73.50 | 75.00 | 74.46 | 13.66 | 27,600 |   |  
            | 12/16/2015 | +1.00 / +1.35% | 74.50 | 75.00 | 73.50 | 75.00 | 74.20 | 13.66 | 60,340 |   |  			
            | 12/15/2015 | 0.00 / 0.00% | 74.00 | 74.50 | 73.50 | 74.00 | 74.07 | 13.48 | 21,170 |   |  
            | 12/14/2015 | -0.50 / -0.67% | 74.50 | 74.50 | 73.50 | 74.00 | 74.17 | 13.48 | 11,730 |   |  			
            | 12/11/2015 | +2.00 / +2.76% | 72.50 | 75.50 | 72.50 | 74.50 | 74.43 | 13.57 | 73,560 |   |  
            | 12/10/2015 | -1.50 / -2.03% | 73.50 | 74.50 | 72.50 | 72.50 | 73.33 | 13.21 | 34,420 |   |  			
            | 12/9/2015 | -1.00 / -1.33% | 76.00 | 76.00 | 74.00 | 74.00 | 74.77 | 13.48 | 38,370 |   |  
            | 12/8/2015 | +1.50 / +2.04% | 73.50 | 75.00 | 72.00 | 75.00 | 73.73 | 13.66 | 118,500 |   |  			
            | 12/7/2015 | +0.50 / +0.68% | 73.00 | 75.00 | 72.50 | 73.50 | 73.63 | 13.39 | 104,120 |   |  
            | 12/4/2015 | -1.00 / -1.35% | 74.00 | 75.50 | 72.50 | 73.00 | 73.39 | 13.30 | 33,290 |   |  			
            | 12/3/2015 | +4.50 / +6.47% | 69.50 | 74.00 | 69.00 | 74.00 | 72.69 | 13.48 | 230,240 |   |  
            | 12/2/2015 | +2.00 / +2.96% | 68.00 | 69.50 | 68.00 | 69.50 | 68.94 | 12.66 | 22,830 |   |  			
            | 12/1/2015 | +0.50 / +0.75% | 67.00 | 68.50 | 67.00 | 67.50 | 67.61 | 12.30 | 18,430 |   |  
            | 11/30/2015 | -0.50 / -0.74% | 67.00 | 67.00 | 66.00 | 67.00 | 66.46 | 12.20 | 8,200 |   |  			
            | 11/27/2015 | 0.00 / 0.00% | 67.00 | 67.50 | 66.50 | 67.50 | 66.89 | 12.30 | 16,520 |   |  
            | 11/26/2015 | -1.50 / -2.17% | 68.00 | 69.00 | 67.00 | 67.50 | 67.37 | 12.30 | 9,530 |   |  			
            | 11/25/2015 | +3.00 / +4.55% | 65.50 | 70.00 | 65.50 | 69.00 | 67.78 | 12.57 | 29,170 |   |  
            | 11/24/2015 | -2.00 / -2.94% | 67.50 | 67.50 | 65.50 | 66.00 | 66.30 | 12.02 | 70,960 |   |  			
            | 11/23/2015 | -1.00 / -1.45% | 68.50 | 69.00 | 68.00 | 68.00 | 68.43 | 12.39 | 45,140 |   |  
            | 11/20/2015 | -1.00 / -1.43% | 69.00 | 69.50 | 68.50 | 69.00 | 68.89 | 12.57 | 68,600 |   |  			
            | 11/19/2015 | 0.00 / 0.00% | 70.00 | 70.50 | 69.50 | 70.00 | 70.01 | 12.75 | 21,040 |   |  
            | 11/18/2015 | 0.00 / 0.00% | 69.50 | 70.50 | 69.50 | 70.00 | 69.85 | 12.75 | 67,770 |   |  			
            | 11/17/2015 | -1.50 / -2.10% | 71.50 | 71.50 | 69.50 | 70.00 | 70.53 | 12.75 | 70,590 |   |  
            | 11/16/2015 | +1.50 / +2.14% | 70.50 | 72.00 | 69.00 | 71.50 | 70.46 | 13.02 | 105,890 |   |  			
            | 11/13/2015 | +2.00 / +2.94% | 69.00 | 70.50 | 69.00 | 70.00 | 69.74 | 12.75 | 53,670 |   |  
            | 11/12/2015 | +4.00 / +6.25% | 64.00 | 68.00 | 64.00 | 68.00 | 66.42 | 12.39 | 52,560 |   |  			
            | 11/11/2015 | -0.50 / -0.78% | 64.00 | 65.00 | 64.00 | 64.00 | 64.43 | 11.66 | 8,180 |   |  
            | 11/10/2015 | -1.00 / -1.53% | 64.50 | 64.50 | 64.00 | 64.50 | 64.29 | 11.75 | 25,290 |   |  			
            | 11/9/2015 | +1.50 / +2.34% | 65.00 | 65.50 | 65.00 | 65.50 | 65.04 | 11.93 | 16,790 |   |  
            | 11/6/2015 | -2.50 / -3.76% | 66.00 | 66.00 | 63.00 | 64.00 | 64.06 | 11.66 | 51,390 |   |  |