| 
    
        
            | 
                    Closing price on 3/20/2019
                 |  |  
    
        |           
                
                    | Open | 1.55 |  
                    | High | 1.57 |  
                    | Low | 1.50 |  
                    | Volume | 75,540 |  
                    | Split-adjusted Price | 1.50 |  
                
             | 
 |  ATG Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/20/2019 | -0.04 / -2.60% | 1.55 | 1.57 | 1.50 | 1.50 | 1.52 | 1.50 | 75,540 |   |  
            | 3/19/2019 | +0.10 / +6.94% | 1.50 | 1.54 | 1.46 | 1.54 | 1.51 | 1.54 | 588,590 |   |  			
            | 3/18/2019 | +0.02 / +1.41% | 1.45 | 1.46 | 1.42 | 1.44 | 1.44 | 1.44 | 82,100 |   |  
            | 3/15/2019 | -0.02 / -1.39% | 1.44 | 1.49 | 1.42 | 1.42 | 1.44 | 1.42 | 138,810 |   |  			
            | 3/14/2019 | +0.06 / +4.35% | 1.40 | 1.46 | 1.38 | 1.44 | 1.44 | 1.44 | 170,170 |   |  
            | 3/13/2019 | -0.02 / -1.43% | 1.43 | 1.43 | 1.38 | 1.38 | 1.40 | 1.38 | 51,540 |   |  			
            | 3/12/2019 | +0.01 / +0.72% | 1.39 | 1.44 | 1.39 | 1.40 | 1.40 | 1.40 | 128,900 |   |  
            | 3/11/2019 | -0.06 / -4.14% | 1.37 | 1.41 | 1.36 | 1.39 | 1.38 | 1.39 | 149,650 |   |  			
            | 3/8/2019 | -0.10 / -6.45% | 1.63 | 1.63 | 1.45 | 1.45 | 1.52 | 1.45 | 373,310 |   |  
            | 3/7/2019 | +0.10 / +6.90% | 1.55 | 1.55 | 1.55 | 1.55 | 1.55 | 1.55 | 38,020 |   |  			
            | 3/6/2019 | +0.09 / +6.62% | 1.38 | 1.45 | 1.38 | 1.45 | 1.42 | 1.45 | 281,510 |   |  
            | 3/5/2019 | +0.01 / +0.74% | 1.35 | 1.38 | 1.34 | 1.36 | 1.36 | 1.36 | 123,690 |   |  			
            | 3/4/2019 | -0.02 / -1.46% | 1.37 | 1.37 | 1.33 | 1.35 | 1.36 | 1.35 | 36,820 |   |  
            | 3/1/2019 | +0.03 / +2.24% | 1.31 | 1.37 | 1.31 | 1.37 | 1.34 | 1.37 | 76,090 |   |  			
            | 2/28/2019 | -0.01 / -0.74% | 1.34 | 1.34 | 1.32 | 1.34 | 1.34 | 1.34 | 57,460 |   |  
            | 2/27/2019 | -0.01 / -0.74% | 1.32 | 1.36 | 1.30 | 1.35 | 1.31 | 1.35 | 107,270 |   |  			
            | 2/26/2019 | +0.05 / +3.82% | 1.35 | 1.36 | 1.30 | 1.36 | 1.31 | 1.36 | 48,880 |   |  
            | 2/25/2019 | -0.06 / -4.38% | 1.38 | 1.38 | 1.31 | 1.31 | 1.33 | 1.31 | 158,360 |   |  			
            | 2/22/2019 | 0.00 / 0.00% | 1.36 | 1.38 | 1.35 | 1.37 | 1.36 | 1.37 | 143,780 |   |  
            | 2/21/2019 | 0.00 / 0.00% | 1.36 | 1.40 | 1.36 | 1.37 | 1.37 | 1.37 | 2,790 |   |  			
            | 2/20/2019 | -0.01 / -0.72% | 1.40 | 1.40 | 1.37 | 1.37 | 1.37 | 1.37 | 61,110 |   |  
            | 2/19/2019 | 0.00 / 0.00% | 1.40 | 1.40 | 1.38 | 1.38 | 1.38 | 1.38 | 126,630 |   |  			
            | 2/18/2019 | -0.02 / -1.43% | 1.37 | 1.42 | 1.37 | 1.38 | 1.38 | 1.38 | 113,070 |   |  
            | 2/15/2019 | -0.02 / -1.41% | 1.41 | 1.43 | 1.35 | 1.40 | 1.39 | 1.40 | 78,490 |   |  			
            | 2/14/2019 | 0.00 / 0.00% | 1.45 | 1.45 | 1.41 | 1.42 | 1.43 | 1.42 | 51,070 |   |  
            | 2/13/2019 | -0.02 / -1.39% | 1.44 | 1.45 | 1.41 | 1.42 | 1.42 | 1.42 | 122,570 |   |  			
            | 2/12/2019 | +0.03 / +2.13% | 1.35 | 1.44 | 1.35 | 1.44 | 1.43 | 1.44 | 96,820 |   |  
            | 2/11/2019 | +0.01 / +0.71% | 1.40 | 1.46 | 1.32 | 1.41 | 1.41 | 1.41 | 27,720 |   |  			
            | 2/1/2019 | +0.01 / +0.72% | 1.39 | 1.43 | 1.37 | 1.40 | 1.40 | 1.40 | 27,120 |   |  
            | 1/31/2019 | -0.01 / -0.71% | 1.45 | 1.45 | 1.39 | 1.39 | 1.40 | 1.39 | 32,940 |   |  |