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                    Closing price on 1/18/2021
                 |  |  
    
        |           
                
                    | Open | 64.00 |  
                    | High | 65.00 |  
                    | Low | 63.30 |  
                    | Volume | 234,000 |  
                    | Split-adjusted Price | 37.87 |  
                
             | 
 |  PTB Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 1/18/2021 | 0.00 / 0.00% | 64.00 | 65.00 | 63.30 | 63.30 | 64.16 | 37.87 | 234,000 |   |  
            | 1/15/2021 | -0.10 / -0.16% | 63.00 | 63.40 | 62.80 | 63.30 | 63.40 | 37.87 | 179,400 |   |  			
            | 1/14/2021 | +1.70 / +2.76% | 61.70 | 63.80 | 61.00 | 63.40 | 61.70 | 37.93 | 309,500 |   |  
            | 1/13/2021 | -0.20 / -0.32% | 61.90 | 62.70 | 61.50 | 61.70 | 61.89 | 36.91 | 149,600 |   |  			
            | 1/12/2021 | -0.90 / -1.43% | 62.80 | 63.00 | 59.00 | 61.90 | 61.59 | 37.03 | 146,900 |   |  
            | 1/11/2021 | +1.40 / +2.28% | 62.10 | 63.90 | 60.80 | 62.80 | 61.36 | 37.57 | 299,500 |   |  			
            | 1/8/2021 | +1.40 / +2.33% | 60.20 | 61.90 | 60.20 | 61.40 | 61.16 | 36.73 | 390,700 |   |  
            | 1/7/2021 | -0.30 / -0.50% | 60.00 | 60.30 | 58.90 | 60.00 | 59.37 | 35.90 | 245,200 |   |  			
            | 1/6/2021 | -0.70 / -1.15% | 61.00 | 61.00 | 60.00 | 60.30 | 60.68 | 36.08 | 385,100 |   |  
            | 1/5/2021 | -0.80 / -1.29% | 61.80 | 61.90 | 60.80 | 61.00 | 61.80 | 36.49 | 156,100 |   |  			
            | 1/4/2021 | +0.20 / +0.32% | 61.60 | 62.50 | 61.60 | 61.80 | 61.91 | 36.97 | 177,800 |   |  
            | 12/31/2020 | +0.80 / +1.32% | 60.80 | 62.40 | 60.10 | 61.60 | 61.17 | 36.85 | 313,390 |   |  			
            | 12/30/2020 | +2.30 / +3.93% | 58.50 | 60.90 | 58.40 | 60.80 | 60.07 | 36.38 | 449,650 |   |  
            | 12/29/2020 | +0.40 / +0.69% | 58.00 | 58.50 | 57.90 | 58.50 | 58.09 | 35.00 | 126,560 |   |  			
            | 12/28/2020 | -0.70 / -1.19% | 58.80 | 58.90 | 57.80 | 58.10 | 58.23 | 34.76 | 253,070 |   |  
            | 12/25/2020 | +0.30 / +0.51% | 58.10 | 59.20 | 57.60 | 58.80 | 58.38 | 35.18 | 125,340 |   |  			
            | 12/24/2020 | -0.50 / -0.85% | 58.80 | 58.80 | 57.70 | 58.50 | 58.01 | 35.00 | 179,510 |   |  
            | 12/23/2020 | -0.90 / -1.50% | 59.90 | 59.90 | 58.00 | 59.00 | 59.21 | 35.30 | 135,440 |   |  			
            | 12/22/2020 | +1.10 / +1.87% | 58.80 | 59.90 | 58.10 | 59.90 | 58.93 | 35.84 | 275,730 |   |  
            | 12/21/2020 | +0.60 / +1.03% | 58.10 | 59.40 | 57.40 | 58.80 | 58.22 | 35.18 | 699,170 |   |  			
            | 12/18/2020 | -0.80 / -1.36% | 59.00 | 59.00 | 58.00 | 58.20 | 58.39 | 34.82 | 480,350 |   |  
            | 12/17/2020 | -1.20 / -1.99% | 59.50 | 59.70 | 57.90 | 59.00 | 58.99 | 35.30 | 365,240 |   |  			
            | 12/16/2020 | +0.50 / +0.84% | 60.00 | 60.20 | 59.50 | 60.20 | 59.79 | 36.02 | 311,650 |   |  
            | 12/15/2020 | -0.30 / -0.50% | 60.00 | 60.20 | 59.60 | 59.70 | 59.81 | 35.72 | 163,620 |   |  			
            | 12/14/2020 | +0.40 / +0.67% | 59.60 | 61.00 | 59.00 | 60.00 | 60.13 | 35.90 | 252,720 |   |  
            | 12/11/2020 | +0.50 / +0.85% | 59.20 | 59.60 | 58.60 | 59.60 | 59.18 | 35.66 | 120,860 |   |  			
            | 12/10/2020 | -0.40 / -0.67% | 59.50 | 60.00 | 59.00 | 59.10 | 59.45 | 35.36 | 312,840 |   |  
            | 12/9/2020 | -0.10 / -0.17% | 59.60 | 60.70 | 59.20 | 59.50 | 59.83 | 35.60 | 242,290 |   |  			
            | 12/8/2020 | -0.40 / -0.67% | 60.40 | 60.40 | 59.20 | 59.60 | 59.62 | 35.66 | 229,100 |   |  
            | 12/7/2020 | -0.20 / -0.33% | 59.90 | 60.90 | 59.80 | 60.00 | 60.14 | 35.90 | 209,010 |   |  |