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            | 
                    Closing price on 10/1/2020
                 |  |  
    
        |           
                
                    | Open | 14.60 |  
                    | High | 14.80 |  
                    | Low | 14.50 |  
                    | Volume | 12,490 |  
                    | Split-adjusted Price | 14.75 |  
                
             | 
 |  STG Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 10/1/2020 | -0.05 / -0.34% | 14.60 | 14.80 | 14.50 | 14.75 | 14.57 | 14.75 | 12,490 |   |  
            | 9/30/2020 | +0.20 / +1.37% | 14.95 | 14.95 | 14.50 | 14.80 | 14.57 | 14.80 | 8,440 |   |  			
            | 9/29/2020 | -0.05 / -0.34% | 15.10 | 15.10 | 14.60 | 14.60 | 14.61 | 14.60 | 8,910 |   |  
            | 9/28/2020 | -0.05 / -0.34% | 14.60 | 14.95 | 14.55 | 14.65 | 14.60 | 14.65 | 4,520 |   |  			
            | 9/25/2020 | -0.20 / -1.34% | 15.05 | 15.05 | 14.60 | 14.70 | 14.74 | 14.70 | 10,720 |   |  
            | 9/24/2020 | +0.10 / +0.68% | 14.80 | 14.90 | 14.60 | 14.90 | 14.69 | 14.90 | 6,670 |   |  			
            | 9/23/2020 | -0.20 / -1.33% | 14.80 | 15.00 | 14.80 | 14.80 | 14.80 | 14.80 | 13,200 |   |  
            | 9/22/2020 | +0.05 / +0.33% | 14.50 | 15.10 | 14.50 | 15.00 | 14.51 | 15.00 | 9,100 |   |  			
            | 9/21/2020 | +0.15 / +1.01% | 14.80 | 15.50 | 14.70 | 14.95 | 14.86 | 14.95 | 20,520 |   |  
            | 9/18/2020 | -0.20 / -1.33% | 15.00 | 15.00 | 14.20 | 14.80 | 14.66 | 14.80 | 17,670 |   |  			
            | 9/17/2020 | -0.90 / -5.66% | 15.60 | 15.90 | 14.80 | 15.00 | 15.48 | 15.00 | 57,930 |   |  
            | 9/16/2020 | -0.20 / -1.24% | 16.00 | 16.00 | 15.30 | 15.90 | 15.66 | 15.90 | 2,810 |   |  			
            | 9/15/2020 | +0.35 / +2.22% | 15.85 | 16.45 | 15.85 | 16.10 | 16.16 | 16.10 | 46,280 |   |  
            | 9/14/2020 | +1.00 / +6.78% | 14.75 | 15.75 | 14.75 | 15.75 | 15.69 | 15.75 | 250,120 |   |  			
            | 9/11/2020 | 0.00 / 0.00% | 14.75 | 14.75 | 14.50 | 14.75 | 14.56 | 14.75 | 6,730 |   |  
            | 9/10/2020 | 0.00 / 0.00% | 14.75 | 14.80 | 14.60 | 14.75 | 14.60 | 14.75 | 11,300 |   |  			
            | 9/9/2020 | 0.00 / 0.00% | 14.40 | 14.75 | 14.40 | 14.75 | 14.53 | 14.75 | 8,740 |   |  
            | 9/8/2020 | +0.40 / +2.79% | 14.50 | 14.75 | 14.30 | 14.75 | 14.50 | 14.75 | 7,930 |   |  			
            | 9/7/2020 | +0.05 / +0.35% | 14.20 | 14.60 | 14.20 | 14.35 | 14.29 | 14.35 | 11,060 |   |  
            | 9/4/2020 | -0.40 / -2.72% | 14.40 | 14.70 | 14.15 | 14.30 | 14.49 | 14.30 | 10,630 |   |  			
            | 9/3/2020 | 0.00 / 0.00% | 14.80 | 14.80 | 14.50 | 14.70 | 14.58 | 14.70 | 38,960 |   |  
            | 9/1/2020 | -0.25 / -1.67% | 14.95 | 15.00 | 14.60 | 14.70 | 14.88 | 14.70 | 3,830 |   |  			
            | 8/31/2020 | +0.15 / +1.01% | 15.15 | 15.15 | 14.50 | 14.95 | 14.84 | 14.95 | 14,620 |   |  
            | 8/28/2020 | -0.45 / -2.95% | 15.25 | 15.25 | 14.70 | 14.80 | 14.86 | 14.80 | 29,280 |   |  			
            | 8/27/2020 | -0.40 / -2.56% | 16.00 | 16.00 | 14.80 | 15.25 | 14.92 | 15.25 | 36,660 |   |  
            | 8/26/2020 | -1.15 / -6.85% | 15.70 | 16.00 | 15.65 | 15.65 | 15.66 | 15.65 | 104,200 |   |  			
            | 8/25/2020 | +0.30 / +1.82% | 16.50 | 16.85 | 15.70 | 16.80 | 16.70 | 16.80 | 10,600 |   |  
            | 8/24/2020 | +0.55 / +3.45% | 15.00 | 16.50 | 14.85 | 16.50 | 15.16 | 16.50 | 97,140 |   |  			
            | 8/21/2020 | -1.20 / -7.00% | 15.95 | 16.50 | 15.95 | 15.95 | 15.97 | 15.95 | 152,020 |   |  
            | 8/20/2020 | -1.25 / -6.79% | 17.50 | 18.20 | 17.15 | 17.15 | 17.42 | 17.15 | 22,160 |   |  |