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            | 
                    Closing price on 1/6/2021
                 |  |  
    
        |           
                
                    | Open | 5.60 |  
                    | High | 5.90 |  
                    | Low | 5.40 |  
                    | Volume | 9,300 |  
                    | Split-adjusted Price | 5.90 |  
                
             | 
 |  PSI Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 1/6/2021 | 0.00 / 0.00% | 5.60 | 5.90 | 5.40 | 5.90 | 5.62 | 5.90 | 9,300 |   |  
            | 1/5/2021 | -0.10 / -1.67% | 6.00 | 6.00 | 5.40 | 5.90 | 5.84 | 5.90 | 9,900 |   |  			
            | 1/4/2021 | -0.10 / -1.64% | 5.50 | 6.00 | 5.50 | 6.00 | 5.77 | 6.00 | 13,300 |   |  
            | 12/31/2020 | +0.40 / +7.02% | 6.00 | 6.10 | 5.70 | 6.10 | 5.78 | 6.10 | 6,800 |   |  			
            | 12/30/2020 | +0.50 / +9.62% | 5.20 | 5.70 | 4.90 | 5.70 | 5.15 | 5.70 | 7,220 |   |  
            | 12/29/2020 | +0.20 / +4.00% | 4.90 | 5.20 | 4.70 | 5.20 | 4.98 | 5.20 | 28,100 |   |  			
            | 12/28/2020 | 0.00 / 0.00% | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 16,400 |   |  
            | 12/25/2020 | +0.40 / +8.70% | 4.20 | 5.00 | 4.20 | 5.00 | 4.81 | 5.00 | 8,500 |   |  			
            | 12/24/2020 | 0.00 / 0.00% | 4.60 | 4.60 | 4.20 | 4.60 | 4.51 | 4.60 | 11,400 |   |  
            | 12/23/2020 | +0.40 / +9.52% | 4.50 | 4.60 | 4.50 | 4.60 | 4.58 | 4.60 | 33,600 |   |  			
            | 12/22/2020 | +0.30 / +7.69% | 4.00 | 4.20 | 4.00 | 4.20 | 4.20 | 4.20 | 63,400 |   |  
            | 12/21/2020 | +0.30 / +8.33% | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 100 |   |  			
            | 12/18/2020 | -0.40 / -10.00% | 3.60 | 3.60 | 3.60 | 3.60 | 3.60 | 3.60 | 1,700 |   |  
            | 12/17/2020 | 0.00 / 0.00% | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | 300 |   |  			
            | 12/16/2020 | 0.00 / 0.00% | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | 10,500 |   |  
            | 12/15/2020 | -0.10 / -2.44% | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | 1,000 |   |  			
            | 12/14/2020 | +0.20 / +5.13% | 4.00 | 4.20 | 4.00 | 4.10 | 4.10 | 4.10 | 2,800 |   |  
            | 12/11/2020 | 0.00 / 0.00% | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 200 |   |  			
            | 12/10/2020 | -0.10 / -2.50% | 3.90 | 4.00 | 3.90 | 3.90 | 3.90 | 3.90 | 10,900 |   |  
            | 12/9/2020 | +0.10 / +2.56% | 3.90 | 4.00 | 3.90 | 4.00 | 3.90 | 4.00 | 21,400 |   |  			
            | 12/8/2020 | 0.00 / 0.00% | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 0 |   |  
            | 12/7/2020 | 0.00 / 0.00% | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 10,100 |   |  			
            | 12/4/2020 | 0.00 / 0.00% | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 0 |   |  
            | 12/3/2020 | 0.00 / 0.00% | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 2,000 |   |  			
            | 12/2/2020 | 0.00 / 0.00% | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 0 |   |  
            | 12/1/2020 | 0.00 / 0.00% | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 500 |   |  			
            | 11/30/2020 | 0.00 / 0.00% | 3.90 | 4.00 | 3.90 | 3.90 | 3.90 | 3.90 | 39,600 |   |  
            | 11/27/2020 | 0.00 / 0.00% | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 0 |   |  			
            | 11/26/2020 | -0.10 / -2.50% | 3.70 | 3.90 | 3.70 | 3.90 | 3.71 | 3.90 | 9,100 |   |  
            | 11/25/2020 | 0.00 / 0.00% | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | 4.00 | 0 |   |  |