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            | 
                    Closing price on 5/15/2018
                 |  |  
    
        |           
                
                    | Open | 1.95 |  
                    | High | 1.97 |  
                    | Low | 1.90 |  
                    | Volume | 10,730 |  
                    | Split-adjusted Price | 1.91 |  
                
             | 
 |  ATG Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 5/15/2018 | -0.04 / -2.05% | 1.95 | 1.97 | 1.90 | 1.91 | 1.93 | 1.91 | 10,730 |   |  
            | 5/14/2018 | 0.00 / 0.00% | 2.00 | 2.00 | 1.86 | 1.95 | 1.91 | 1.95 | 44,450 |   |  			
            | 5/11/2018 | -0.08 / -3.94% | 1.92 | 2.02 | 1.90 | 1.95 | 1.92 | 1.95 | 26,100 |   |  
            | 5/10/2018 | +0.03 / +1.50% | 2.00 | 2.04 | 1.96 | 2.03 | 2.02 | 2.03 | 25,270 |   |  			
            | 5/9/2018 | 0.00 / 0.00% | 2.00 | 2.05 | 1.86 | 2.00 | 1.88 | 2.00 | 341,190 |   |  
            | 5/8/2018 | +0.05 / +2.56% | 1.98 | 2.08 | 1.90 | 2.00 | 1.99 | 2.00 | 36,670 |   |  			
            | 5/7/2018 | -0.14 / -6.70% | 2.07 | 2.08 | 1.95 | 1.95 | 1.96 | 1.95 | 27,060 |   |  
            | 5/4/2018 | +0.01 / +0.48% | 2.05 | 2.15 | 2.05 | 2.09 | 2.09 | 2.09 | 3,700 |   |  			
            | 5/3/2018 | -0.15 / -6.73% | 2.09 | 2.23 | 2.08 | 2.08 | 2.09 | 2.08 | 103,210 |   |  
            | 5/2/2018 | +0.01 / +0.45% | 2.20 | 2.27 | 2.10 | 2.23 | 2.21 | 2.23 | 30,740 |   |  			
            | 4/27/2018 | +0.07 / +3.26% | 2.20 | 2.22 | 2.00 | 2.22 | 2.04 | 2.22 | 26,930 |   |  
            | 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 |   |  |