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            | 
                    Closing price on 12/19/2017
                 |  |  
    
        |           
                
                    | Open | 3.10 |  
                    | High | 3.11 |  
                    | Low | 2.93 |  
                    | Volume | 171,450 |  
                    | Split-adjusted Price | 2.96 |  
                
             | 
 |  ATG Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 12/19/2017 | +0.03 / +1.02% | 3.10 | 3.11 | 2.93 | 2.96 | 3.08 | 2.96 | 171,450 |   |  
            | 12/18/2017 | 0.00 / 0.00% | 2.98 | 2.98 | 2.91 | 2.93 | 2.94 | 2.93 | 29,230 |   |  			
            | 12/15/2017 | +0.02 / +0.69% | 2.91 | 3.05 | 2.85 | 2.93 | 2.97 | 2.93 | 69,440 |   |  
            | 12/14/2017 | -0.03 / -1.02% | 2.93 | 2.94 | 2.80 | 2.91 | 2.86 | 2.91 | 58,820 |   |  			
            | 12/13/2017 | +0.04 / +1.38% | 2.85 | 2.94 | 2.80 | 2.94 | 2.86 | 2.94 | 60,850 |   |  
            | 12/12/2017 | 0.00 / 0.00% | 2.77 | 2.93 | 2.77 | 2.90 | 2.83 | 2.90 | 56,270 |   |  			
            | 12/11/2017 | -0.10 / -3.33% | 3.00 | 3.00 | 2.90 | 2.90 | 2.94 | 2.90 | 32,310 |   |  
            | 12/8/2017 | 0.00 / 0.00% | 3.02 | 3.02 | 2.92 | 3.00 | 2.97 | 3.00 | 122,710 |   |  			
            | 12/7/2017 | 0.00 / 0.00% | 3.01 | 3.03 | 2.91 | 3.00 | 2.99 | 3.00 | 34,490 |   |  
            | 12/6/2017 | +0.01 / +0.33% | 3.02 | 3.09 | 2.79 | 3.00 | 2.82 | 3.00 | 220,550 |   |  			
            | 12/5/2017 | -0.01 / -0.33% | 3.00 | 3.05 | 2.95 | 2.99 | 2.97 | 2.99 | 92,330 |   |  
            | 12/4/2017 | -0.14 / -4.46% | 3.14 | 3.14 | 2.93 | 3.00 | 2.94 | 3.00 | 633,970 |   |  			
            | 12/1/2017 | -0.13 / -3.98% | 3.27 | 3.27 | 3.10 | 3.14 | 3.14 | 3.14 | 25,450 |   |  
            | 11/30/2017 | -0.01 / -0.30% | 3.28 | 3.32 | 3.26 | 3.27 | 3.30 | 3.27 | 337,580 |   |  			
            | 11/29/2017 | +0.19 / +6.15% | 3.09 | 3.30 | 3.09 | 3.28 | 3.17 | 3.28 | 99,110 |   |  
            | 11/28/2017 | -0.07 / -2.22% | 3.16 | 3.16 | 3.00 | 3.09 | 3.05 | 3.09 | 230,990 |   |  			
            | 11/27/2017 | +0.18 / +6.04% | 3.00 | 3.17 | 3.00 | 3.16 | 3.11 | 3.16 | 284,790 |   |  
            | 11/24/2017 | +0.08 / +2.76% | 2.90 | 2.98 | 2.89 | 2.98 | 2.90 | 2.98 | 59,550 |   |  			
            | 11/23/2017 | -0.04 / -1.36% | 2.94 | 2.94 | 2.89 | 2.90 | 2.90 | 2.90 | 71,430 |   |  
            | 11/22/2017 | -0.04 / -1.34% | 2.92 | 2.94 | 2.89 | 2.94 | 2.90 | 2.94 | 89,820 |   |  			
            | 11/21/2017 | +0.02 / +0.68% | 2.96 | 2.98 | 2.91 | 2.98 | 2.94 | 2.98 | 81,200 |   |  
            | 11/20/2017 | +0.02 / +0.68% | 2.94 | 2.99 | 2.94 | 2.96 | 2.95 | 2.96 | 29,470 |   |  			
            | 11/17/2017 | -0.02 / -0.68% | 3.05 | 3.13 | 2.93 | 2.94 | 3.03 | 2.94 | 30,720 |   |  
            | 11/16/2017 | +0.16 / +5.71% | 2.80 | 2.98 | 2.80 | 2.96 | 2.87 | 2.96 | 110,770 |   |  			
            | 11/15/2017 | 0.00 / 0.00% | 2.70 | 2.80 | 2.70 | 2.80 | 2.77 | 2.80 | 104,050 |   |  
            | 11/14/2017 | -0.06 / -2.10% | 2.68 | 2.86 | 2.68 | 2.80 | 2.81 | 2.80 | 102,830 |   |  			
            | 11/13/2017 | -0.15 / -4.98% | 3.04 | 3.04 | 2.86 | 2.86 | 2.95 | 2.86 | 55,570 |   |  
            | 11/10/2017 | -0.07 / -2.27% | 3.05 | 3.08 | 3.00 | 3.01 | 3.01 | 3.01 | 46,920 |   |  			
            | 11/9/2017 | +0.04 / +1.32% | 3.05 | 3.20 | 3.04 | 3.08 | 3.07 | 3.08 | 81,650 |   |  
            | 11/8/2017 | +0.02 / +0.66% | 3.02 | 3.07 | 3.00 | 3.04 | 3.03 | 3.04 | 65,590 |   |  |