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            | 
                    Closing price on 4/26/2018
                 |  |  
    
        |           
                
                    | Open | 2.17 |  
                    | High | 2.29 |  
                    | Low | 2.15 |  
                    | Volume | 7,790 |  
                    | Split-adjusted Price | 2.15 |  
                
             | 
 |  ATG Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 4/26/2018 | -0.02 / -0.92% | 2.17 | 2.29 | 2.15 | 2.15 | 2.18 | 2.15 | 7,790 |   |  
            | 4/24/2018 | -0.12 / -5.24% | 2.17 | 2.17 | 2.17 | 2.17 | 2.17 | 2.17 | 3,810 |   |  			
            | 4/23/2018 | 0.00 / 0.00% | 2.20 | 2.29 | 2.20 | 2.29 | 2.25 | 2.29 | 1,890 |   |  
            | 4/20/2018 | +0.03 / +1.33% | 2.25 | 2.29 | 2.22 | 2.29 | 2.25 | 2.29 | 17,310 |   |  			
            | 4/19/2018 | -0.07 / -3.00% | 2.30 | 2.33 | 2.24 | 2.26 | 2.25 | 2.26 | 52,500 |   |  
            | 4/18/2018 | +0.03 / +1.30% | 2.30 | 2.34 | 2.28 | 2.33 | 2.32 | 2.33 | 18,140 |   |  			
            | 4/17/2018 | -0.01 / -0.43% | 2.35 | 2.35 | 2.30 | 2.30 | 2.33 | 2.30 | 17,170 |   |  
            | 4/16/2018 | +0.01 / +0.43% | 2.30 | 2.32 | 2.30 | 2.31 | 2.31 | 2.31 | 118,350 |   |  			
            | 4/13/2018 | 0.00 / 0.00% | 2.34 | 2.34 | 2.26 | 2.30 | 2.30 | 2.30 | 10,420 |   |  
            | 4/12/2018 | +0.03 / +1.32% | 2.28 | 2.30 | 2.23 | 2.30 | 2.28 | 2.30 | 10,810 |   |  			
            | 4/11/2018 | -0.06 / -2.58% | 2.30 | 2.30 | 2.25 | 2.27 | 2.27 | 2.27 | 38,760 |   |  
            | 4/10/2018 | -0.04 / -1.69% | 2.37 | 2.37 | 2.32 | 2.33 | 2.35 | 2.33 | 12,570 |   |  			
            | 4/9/2018 | +0.02 / +0.85% | 2.30 | 2.37 | 2.30 | 2.37 | 2.31 | 2.37 | 32,000 |   |  
            | 4/6/2018 | +0.02 / +0.86% | 2.29 | 2.35 | 2.29 | 2.35 | 2.34 | 2.35 | 65,440 |   |  			
            | 4/5/2018 | -0.05 / -2.10% | 2.38 | 2.38 | 2.30 | 2.33 | 2.35 | 2.33 | 14,870 |   |  
            | 4/4/2018 | 0.00 / 0.00% | 2.38 | 2.39 | 2.31 | 2.38 | 2.33 | 2.38 | 96,360 |   |  			
            | 4/3/2018 | +0.03 / +1.28% | 2.32 | 2.39 | 2.20 | 2.38 | 2.36 | 2.38 | 57,530 |   |  
            | 4/2/2018 | +0.10 / +4.44% | 2.29 | 2.35 | 2.29 | 2.35 | 2.30 | 2.35 | 9,120 |   |  			
            | 3/30/2018 | -0.15 / -6.25% | 2.40 | 2.46 | 2.25 | 2.25 | 2.30 | 2.25 | 101,250 |   |  
            | 3/29/2018 | +0.05 / +2.13% | 2.35 | 2.42 | 2.35 | 2.40 | 2.41 | 2.40 | 16,190 |   |  			
            | 3/28/2018 | -0.12 / -4.86% | 2.46 | 2.47 | 2.35 | 2.35 | 2.37 | 2.35 | 80,700 |   |  
            | 3/27/2018 | +0.04 / +1.65% | 2.43 | 2.47 | 2.40 | 2.47 | 2.43 | 2.47 | 70,440 |   |  			
            | 3/26/2018 | 0.00 / 0.00% | 2.46 | 2.48 | 2.43 | 2.43 | 2.46 | 2.43 | 106,660 |   |  
            | 3/23/2018 | +0.06 / +2.53% | 2.49 | 2.49 | 2.38 | 2.43 | 2.45 | 2.43 | 54,710 |   |  			
            | 3/22/2018 | -0.05 / -2.07% | 2.42 | 2.42 | 2.37 | 2.37 | 2.39 | 2.37 | 36,410 |   |  
            | 3/21/2018 | -0.02 / -0.82% | 2.48 | 2.48 | 2.37 | 2.42 | 2.40 | 2.42 | 84,050 |   |  			
            | 3/20/2018 | +0.01 / +0.41% | 2.40 | 2.44 | 2.40 | 2.44 | 2.42 | 2.44 | 14,480 |   |  
            | 3/19/2018 | -0.07 / -2.80% | 2.37 | 2.48 | 2.37 | 2.43 | 2.39 | 2.43 | 33,840 |   |  			
            | 3/16/2018 | -0.02 / -0.79% | 2.48 | 2.52 | 2.42 | 2.50 | 2.50 | 2.50 | 50,070 |   |  
            | 3/15/2018 | +0.02 / +0.80% | 2.50 | 2.52 | 2.46 | 2.52 | 2.50 | 2.52 | 87,770 |   |  |