| 
    
        
            | 
                    Closing price on 7/16/2020
                 |  |  
    
        |           
                
                    | Open | 51.80 |  
                    | High | 52.00 |  
                    | Low | 51.20 |  
                    | Volume | 65,000 |  
                    | Split-adjusted Price | 30.63 |  
                
             | 
 |  PTB Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 6/25/2020 | -1.10 / -2.16% | 49.50 | 50.40 | 49.50 | 49.90 | 49.97 | 28.73 | 129,950 |   |  			
            | 6/24/2020 | -0.40 / -0.78% | 51.10 | 51.50 | 50.40 | 51.00 | 50.99 | 29.36 | 176,460 |   |  
            | 6/23/2020 | -0.10 / -0.19% | 51.00 | 52.30 | 50.80 | 51.40 | 51.24 | 29.59 | 190,590 |   |  			
            | 6/22/2020 | -0.50 / -0.96% | 53.00 | 53.00 | 51.00 | 51.50 | 51.47 | 29.65 | 212,100 |   |  
            | 6/19/2020 | +0.20 / +0.39% | 52.00 | 53.00 | 51.50 | 52.00 | 52.15 | 29.94 | 148,830 |   |  			
            | 6/18/2020 | -0.40 / -0.77% | 53.00 | 53.50 | 51.00 | 51.80 | 52.64 | 29.82 | 286,400 |   |  
            | 6/17/2020 | +3.40 / +6.97% | 49.40 | 52.20 | 48.50 | 52.20 | 51.62 | 30.05 | 565,220 |   |  			
            | 6/16/2020 | +0.80 / +1.67% | 48.50 | 49.00 | 48.25 | 48.80 | 48.55 | 28.10 | 120,960 |   |  
            | 6/15/2020 | -0.90 / -1.84% | 48.80 | 48.80 | 47.20 | 48.00 | 47.88 | 27.64 | 251,910 |   |  			
            | 6/12/2020 | -0.60 / -1.21% | 46.60 | 49.30 | 46.50 | 48.90 | 47.63 | 28.15 | 217,160 |   |  
            | 6/11/2020 | -3.70 / -6.95% | 52.80 | 53.10 | 49.50 | 49.50 | 51.28 | 28.50 | 453,410 |   |  			
            | 6/10/2020 | -0.50 / -0.93% | 53.70 | 53.70 | 51.30 | 53.20 | 52.82 | 30.63 | 209,200 |   |  
            | 6/9/2020 | +3.00 / +5.92% | 50.70 | 54.20 | 50.70 | 53.70 | 53.43 | 30.92 | 509,000 |   |  			
            | 6/8/2020 | +2.40 / +4.97% | 49.45 | 51.00 | 48.80 | 50.70 | 49.92 | 29.19 | 613,380 |   |  
            | 6/5/2020 | +1.05 / +2.22% | 47.00 | 48.40 | 46.85 | 48.30 | 47.65 | 27.81 | 189,760 |   |  |