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            | 
                    Closing price on 8/20/2020
                 |  |  
    
        |           
                
                    | Open | 17.50 |  
                    | High | 18.20 |  
                    | Low | 17.15 |  
                    | Volume | 22,160 |  
                    | Split-adjusted Price | 17.15 |  
                
             | 
 |  STG Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 8/20/2020 | -1.25 / -6.79% | 17.50 | 18.20 | 17.15 | 17.15 | 17.42 | 17.15 | 22,160 |   |  
            | 8/19/2020 | -1.20 / -6.12% | 20.95 | 20.95 | 18.30 | 18.40 | 19.61 | 18.40 | 448,460 |   |  			
            | 8/18/2020 | +1.25 / +6.81% | 19.60 | 19.60 | 19.60 | 19.60 | 19.60 | 19.60 | 44,400 |   |  
            | 8/17/2020 | +1.20 / +7.00% | 18.35 | 18.35 | 18.35 | 18.35 | 18.35 | 18.35 | 20,020 |   |  			
            | 8/14/2020 | +1.10 / +6.85% | 17.15 | 17.15 | 17.15 | 17.15 | 17.15 | 17.15 | 8,990 |   |  
            | 8/13/2020 | +1.05 / +7.00% | 16.05 | 16.05 | 16.05 | 16.05 | 16.05 | 16.05 | 14,040 |   |  			
            | 8/12/2020 | +0.95 / +6.76% | 15.00 | 15.00 | 15.00 | 15.00 | 15.00 | 15.00 | 33,380 |   |  
            | 8/11/2020 | 0.00 / 0.00% | 14.05 | 14.05 | 14.05 | 14.05 | 14.05 | 14.05 | 360 |   |  			
            | 8/10/2020 | +0.05 / +0.36% | 14.00 | 14.05 | 13.05 | 14.05 | 13.79 | 14.05 | 490 |   |  
            | 8/7/2020 | -0.75 / -5.08% | 15.40 | 15.40 | 14.00 | 14.00 | 14.75 | 14.00 | 20 |   |  			
            | 8/6/2020 | +0.85 / +6.12% | 14.75 | 14.75 | 14.75 | 14.75 | 14.75 | 14.75 | 10 |   |  
            | 8/5/2020 | -1.00 / -6.71% | 14.25 | 14.25 | 13.90 | 13.90 | 14.05 | 13.90 | 4,200 |   |  			
            | 8/4/2020 | 0.00 / 0.00% | 14.90 | 14.90 | 14.90 | 14.90 | 14.90 | 14.90 | 0 |   |  
            | 8/3/2020 | 0.00 / 0.00% | 14.55 | 14.90 | 14.25 | 14.90 | 14.65 | 14.90 | 660 |   |  			
            | 7/31/2020 | 0.00 / 0.00% | 14.90 | 14.90 | 14.90 | 14.90 | 14.90 | 14.90 | 110 |   |  
            | 7/30/2020 | 0.00 / 0.00% | 14.25 | 14.90 | 13.90 | 14.90 | 14.49 | 14.90 | 400 |   |  			
            | 7/29/2020 | +0.05 / +0.34% | 13.85 | 14.90 | 13.85 | 14.90 | 14.85 | 14.90 | 20 |   |  
            | 7/28/2020 | 0.00 / 0.00% | 14.85 | 14.85 | 14.85 | 14.85 | 14.85 | 14.85 | 0 |   |  			
            | 7/27/2020 | +0.95 / +6.83% | 12.95 | 14.85 | 12.95 | 14.85 | 13.90 | 14.85 | 490 |   |  
            | 7/24/2020 | -1.00 / -6.71% | 14.85 | 14.90 | 13.90 | 13.90 | 14.39 | 13.90 | 110 |   |  			
            | 7/23/2020 | 0.00 / 0.00% | 14.45 | 14.90 | 14.00 | 14.90 | 14.56 | 14.90 | 4,160 |   |  
            | 7/22/2020 | -0.10 / -0.67% | 15.00 | 15.15 | 14.90 | 14.90 | 15.09 | 14.90 | 530 |   |  			
            | 7/21/2020 | 0.00 / 0.00% | 15.00 | 15.00 | 14.00 | 15.00 | 14.75 | 15.00 | 1,780 |   |  
            | 7/20/2020 | 0.00 / 0.00% | 15.00 | 15.00 | 14.90 | 15.00 | 14.98 | 15.00 | 2,620 |   |  			
            | 7/17/2020 | 0.00 / 0.00% | 15.00 | 15.00 | 15.00 | 15.00 | 15.00 | 15.00 | 0 |   |  
            | 7/16/2020 | -0.10 / -0.66% | 14.95 | 15.00 | 14.95 | 15.00 | 14.98 | 15.00 | 60 |   |  			
            | 7/15/2020 | 0.00 / 0.00% | 15.10 | 15.10 | 15.10 | 15.10 | 15.10 | 15.10 | 0 |   |  
            | 7/14/2020 | 0.00 / 0.00% | 15.15 | 15.15 | 15.10 | 15.10 | 15.13 | 15.10 | 70 |   |  			
            | 7/13/2020 | +0.50 / +3.42% | 15.10 | 15.10 | 15.10 | 15.10 | 15.10 | 15.10 | 10 |   |  
            | 7/10/2020 | +0.05 / +0.34% | 14.45 | 14.60 | 14.45 | 14.60 | 14.47 | 14.60 | 1,520 |   |  |