| 
    
        
            | 
                    Closing price on 8/6/2020
                 |  |  
    
        |           
                
                    | Open | 47.00 |  
                    | High | 47.80 |  
                    | Low | 46.90 |  
                    | Volume | 70,130 |  
                    | Split-adjusted Price | 28.18 |  
                
             | 
 |  PTB Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 8/6/2020 | -0.10 / -0.21% | 47.00 | 47.80 | 46.90 | 47.10 | 47.06 | 28.18 | 70,130 |   |  
            | 8/5/2020 | +2.15 / +4.77% | 45.10 | 47.40 | 44.50 | 47.20 | 46.40 | 28.24 | 78,690 |   |  			
            | 8/4/2020 | +0.95 / +2.15% | 44.50 | 45.50 | 44.50 | 45.05 | 44.95 | 26.95 | 56,690 |   |  
            | 8/3/2020 | +0.30 / +0.68% | 42.85 | 45.00 | 42.85 | 44.10 | 44.46 | 26.38 | 89,750 |   |  			
            | 7/31/2020 | -0.20 / -0.45% | 43.10 | 44.10 | 43.00 | 43.80 | 43.68 | 26.20 | 34,890 |   |  
            | 7/30/2020 | +1.00 / +2.33% | 44.50 | 44.50 | 43.25 | 44.00 | 43.79 | 26.32 | 38,590 |   |  			
            | 7/29/2020 | -2.90 / -6.32% | 45.80 | 45.80 | 42.70 | 43.00 | 43.08 | 25.73 | 289,250 |   |  
            | 7/28/2020 | +1.90 / +4.32% | 43.20 | 45.90 | 43.20 | 45.90 | 44.68 | 27.46 | 128,030 |   |  			
            | 7/27/2020 | -3.30 / -6.98% | 44.00 | 46.00 | 44.00 | 44.00 | 44.42 | 26.32 | 517,220 |   |  
            | 7/24/2020 | -2.20 / -4.44% | 48.10 | 49.50 | 47.00 | 47.30 | 48.20 | 28.30 | 178,660 |   |  			
            | 7/23/2020 | -0.70 / -1.39% | 50.20 | 50.50 | 49.50 | 49.50 | 49.70 | 29.61 | 71,310 |   |  
            | 7/22/2020 | +0.20 / +0.40% | 50.20 | 51.50 | 50.20 | 50.20 | 50.87 | 30.03 | 79,930 |   |  			
            | 7/21/2020 | -0.10 / -0.20% | 49.50 | 50.20 | 49.50 | 50.00 | 49.94 | 29.91 | 210,530 |   |  
            | 7/20/2020 | -0.80 / -1.57% | 50.90 | 50.90 | 50.00 | 50.10 | 50.31 | 29.97 | 66,820 |   |  			
            | 7/17/2020 | -0.30 / -0.59% | 51.00 | 51.50 | 50.00 | 50.90 | 50.98 | 30.45 | 61,300 |   |  
            | 7/16/2020 | -0.60 / -1.16% | 51.80 | 52.00 | 51.20 | 51.20 | 51.66 | 30.63 | 65,000 |   |  			
            | 7/15/2020 | +0.20 / +0.39% | 51.60 | 51.80 | 51.20 | 51.80 | 51.49 | 30.99 | 70,970 |   |  
            | 7/14/2020 | 0.00 / 0.00% | 51.60 | 51.80 | 51.00 | 51.60 | 51.31 | 30.87 | 66,090 |   |  			
            | 7/13/2020 | +0.50 / +0.98% | 52.80 | 52.80 | 51.10 | 51.60 | 51.62 | 30.87 | 107,080 |   |  
            | 7/10/2020 | +0.60 / +1.14% | 52.50 | 53.80 | 52.40 | 53.10 | 52.99 | 30.57 | 193,080 |   |  			
            | 7/9/2020 | +0.40 / +0.77% | 52.10 | 52.70 | 52.10 | 52.50 | 52.46 | 30.23 | 70,720 |   |  
            | 7/8/2020 | -0.10 / -0.19% | 52.00 | 52.40 | 51.60 | 52.10 | 51.99 | 30.00 | 55,400 |   |  			
            | 7/7/2020 | +0.20 / +0.38% | 52.50 | 52.80 | 52.10 | 52.20 | 52.31 | 30.05 | 128,370 |   |  
            | 7/6/2020 | +0.20 / +0.39% | 51.80 | 52.50 | 51.60 | 52.00 | 52.20 | 29.94 | 70,830 |   |  			
            | 7/3/2020 | +0.80 / +1.57% | 51.50 | 52.50 | 51.40 | 51.80 | 51.83 | 29.82 | 88,030 |   |  
            | 7/2/2020 | +0.50 / +0.99% | 51.10 | 51.20 | 50.50 | 51.00 | 50.78 | 29.36 | 72,720 |   |  			
            | 7/1/2020 | +1.50 / +3.06% | 48.70 | 50.50 | 48.70 | 50.50 | 49.74 | 29.07 | 66,060 |   |  
            | 6/30/2020 | -0.10 / -0.20% | 49.10 | 50.00 | 48.50 | 49.00 | 49.07 | 28.21 | 193,650 |   |  			
            | 6/29/2020 | -1.20 / -2.39% | 50.00 | 50.20 | 49.00 | 49.10 | 49.28 | 28.27 | 151,270 |   |  
            | 6/26/2020 | +0.40 / +0.80% | 51.20 | 51.20 | 50.00 | 50.30 | 50.43 | 28.96 | 67,660 |   |  |