| 
    
        
            | 
                    Closing price on 11/21/2016
                 |  |  
    
        |           
                
                    | Open | 119.60 |  
                    | High | 119.60 |  
                    | Low | 117.10 |  
                    | Volume | 61,710 |  
                    | Split-adjusted Price | 30.00 |  
                
             | 
 |  PTB Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 11/21/2016 | -2.50 / -2.09% | 119.60 | 119.60 | 117.10 | 117.10 | 117.76 | 30.00 | 61,710 |   |  
            | 11/18/2016 | -1.40 / -1.16% | 121.00 | 121.00 | 119.50 | 119.60 | 119.91 | 30.64 | 67,660 |   |  			
            | 11/17/2016 | -0.70 / -0.58% | 121.70 | 121.90 | 121.00 | 121.00 | 121.31 | 31.00 | 30,030 |   |  
            | 11/16/2016 | -1.80 / -1.46% | 123.50 | 123.50 | 121.00 | 121.70 | 121.71 | 31.18 | 18,100 |   |  			
            | 11/15/2016 | -0.50 / -0.40% | 123.10 | 123.50 | 123.00 | 123.50 | 123.12 | 31.64 | 11,030 |   |  
            | 11/14/2016 | 0.00 / 0.00% | 124.00 | 124.00 | 122.50 | 124.00 | 123.45 | 31.77 | 28,270 |   |  			
            | 11/11/2016 | 0.00 / 0.00% | 124.00 | 124.30 | 123.00 | 124.00 | 123.97 | 31.77 | 54,650 |   |  
            | 11/10/2016 | +3.80 / +3.16% | 122.40 | 124.30 | 121.00 | 124.00 | 123.04 | 31.77 | 135,870 |   |  			
            | 11/9/2016 | -1.80 / -1.48% | 122.00 | 122.00 | 117.90 | 120.20 | 119.43 | 30.80 | 68,380 |   |  
            | 11/8/2016 | +3.00 / +2.52% | 119.80 | 125.00 | 119.50 | 122.00 | 121.47 | 31.26 | 92,110 |   |  			
            | 11/7/2016 | +2.20 / +1.88% | 119.10 | 119.20 | 118.00 | 119.00 | 118.94 | 30.49 | 22,600 |   |  
            | 11/4/2016 | -1.70 / -1.43% | 119.80 | 119.90 | 116.80 | 116.80 | 117.78 | 29.92 | 38,580 |   |  			
            | 11/3/2016 | +1.00 / +0.85% | 116.50 | 118.90 | 115.70 | 118.50 | 117.24 | 30.36 | 54,750 |   |  
            | 11/2/2016 | -3.50 / -2.89% | 121.00 | 121.00 | 117.40 | 117.50 | 119.07 | 30.10 | 56,380 |   |  			
            | 11/1/2016 | +1.00 / +0.83% | 120.00 | 121.00 | 120.00 | 121.00 | 120.30 | 31.00 | 66,370 |   |  
            | 10/31/2016 | -0.30 / -0.25% | 120.70 | 120.70 | 119.00 | 120.00 | 120.21 | 30.74 | 35,090 |   |  			
            | 10/28/2016 | +0.60 / +0.50% | 120.00 | 121.50 | 120.00 | 120.30 | 120.61 | 30.82 | 34,930 |   |  
            | 10/27/2016 | +1.70 / +1.44% | 118.20 | 120.00 | 118.10 | 119.70 | 119.39 | 30.67 | 41,010 |   |  			
            | 10/26/2016 | +1.90 / +1.64% | 116.00 | 118.00 | 115.00 | 118.00 | 116.10 | 30.23 | 53,780 |   |  
            | 10/25/2016 | +0.50 / +0.43% | 115.60 | 117.00 | 115.00 | 116.10 | 115.53 | 29.75 | 45,650 |   |  			
            | 10/24/2016 | 0.00 / 0.00% | 114.30 | 115.80 | 114.30 | 115.60 | 115.58 | 29.62 | 79,310 |   |  
            | 10/21/2016 | -3.50 / -2.94% | 119.10 | 119.10 | 114.00 | 115.60 | 116.07 | 29.62 | 52,580 |   |  			
            | 10/20/2016 | -1.00 / -0.83% | 120.20 | 120.60 | 119.10 | 119.10 | 119.76 | 30.51 | 9,310 |   |  
            | 10/19/2016 | +0.10 / +0.08% | 120.40 | 121.50 | 120.00 | 120.10 | 120.42 | 30.77 | 24,540 |   |  			
            | 10/18/2016 | -1.40 / -1.15% | 121.00 | 121.00 | 119.00 | 120.00 | 119.85 | 30.74 | 43,120 |   |  
            | 10/17/2016 | +1.00 / +0.83% | 120.80 | 121.80 | 120.70 | 121.40 | 121.21 | 31.10 | 42,530 |   |  			
            | 10/14/2016 | 0.00 / 0.00% | 120.50 | 120.90 | 120.10 | 120.40 | 120.46 | 30.85 | 16,910 |   |  
            | 10/13/2016 | -1.10 / -0.91% | 121.50 | 121.80 | 119.80 | 120.40 | 120.71 | 30.85 | 14,580 |   |  			
            | 10/12/2016 | +1.80 / +1.50% | 120.00 | 121.90 | 119.70 | 121.50 | 121.00 | 31.13 | 9,240 |   |  
            | 10/11/2016 | +0.70 / +0.59% | 119.00 | 119.70 | 118.40 | 119.70 | 119.07 | 30.67 | 36,650 |   |  |