| 
                 
                    Closing price on 8/23/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    2.10 | 
                 
                
                    | High | 
                    2.10 | 
                 
                
                    | Low | 
                    2.00 | 
                     
                
                    | Volume | 
                    200,800 | 
                                 
                
                    | Split-adjusted Price | 
                    2.10 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
ACM Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/23/2017
             | 
            
                0.00 / 0.00%
             |             
            
                2.10
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.10
             | 
            
                2.09
             |                     
            
                2.10
             |                                 
            
                200,800
             |            
            
                 
             |                                       
         
    
        
            | 
                8/22/2017
             | 
            
                0.00 / 0.00%
             |             
            
                2.10
             |           
            
                2.20
             |               
            
                2.10
             |                           
            
                2.10
             | 
            
                2.10
             |                     
            
                2.10
             |                                 
            
                472,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/21/2017
             | 
            
                -0.10 / -4.55%
             |             
            
                2.20
             |           
            
                2.20
             |               
            
                2.10
             |                           
            
                2.10
             | 
            
                2.10
             |                     
            
                2.10
             |                                 
            
                207,600
             |            
            
                 
             |                                       
         
    
        
            | 
                8/18/2017
             | 
            
                0.00 / 0.00%
             |             
            
                2.10
             |           
            
                2.20
             |               
            
                2.10
             |                           
            
                2.20
             | 
            
                2.15
             |                     
            
                2.20
             |                                 
            
                575,956
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/17/2017
             | 
            
                -0.10 / -4.35%
             |             
            
                2.20
             |           
            
                2.30
             |               
            
                2.10
             |                           
            
                2.20
             | 
            
                2.20
             |                     
            
                2.20
             |                                 
            
                633,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/16/2017
             | 
            
                +0.10 / +4.55%
             |             
            
                2.20
             |           
            
                2.30
             |               
            
                2.10
             |                           
            
                2.30
             | 
            
                2.21
             |                     
            
                2.30
             |                                 
            
                517,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/15/2017
             | 
            
                -0.10 / -4.35%
             |             
            
                2.30
             |           
            
                2.30
             |               
            
                2.20
             |                           
            
                2.20
             | 
            
                2.20
             |                     
            
                2.20
             |                                 
            
                836,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/14/2017
             | 
            
                0.00 / 0.00%
             |             
            
                2.30
             |           
            
                2.30
             |               
            
                2.20
             |                           
            
                2.30
             | 
            
                2.21
             |                     
            
                2.30
             |                                 
            
                416,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/11/2017
             | 
            
                -0.10 / -4.17%
             |             
            
                2.40
             |           
            
                2.40
             |               
            
                2.20
             |                           
            
                2.30
             | 
            
                2.30
             |                     
            
                2.30
             |                                 
            
                1,395,900
             |            
            
                 
             |                                       
         
    
        
            | 
                8/10/2017
             | 
            
                0.00 / 0.00%
             |             
            
                2.40
             |           
            
                2.50
             |               
            
                2.30
             |                           
            
                2.40
             | 
            
                2.40
             |                     
            
                2.40
             |                                 
            
                808,354
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/9/2017
             | 
            
                -0.10 / -4.00%
             |             
            
                2.50
             |           
            
                2.60
             |               
            
                2.30
             |                           
            
                2.40
             | 
            
                2.44
             |                     
            
                2.40
             |                                 
            
                1,945,210
             |            
            
                 
             |                                       
         
    
        
            | 
                8/8/2017
             | 
            
                0.00 / 0.00%
             |             
            
                2.50
             |           
            
                2.50
             |               
            
                2.30
             |                           
            
                2.50
             | 
            
                2.42
             |                     
            
                2.50
             |                                 
            
                1,831,860
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/7/2017
             | 
            
                +0.10 / +4.17%
             |             
            
                2.40
             |           
            
                2.60
             |               
            
                2.40
             |                           
            
                2.50
             | 
            
                2.46
             |                     
            
                2.50
             |                                 
            
                1,632,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/4/2017
             | 
            
                +0.20 / +9.09%
             |             
            
                2.20
             |           
            
                2.40
             |               
            
                2.20
             |                           
            
                2.40
             | 
            
                2.37
             |                     
            
                2.40
             |                                 
            
                2,555,762
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/3/2017
             | 
            
                -0.20 / -8.33%
             |             
            
                2.40
             |           
            
                2.40
             |               
            
                2.20
             |                           
            
                2.20
             | 
            
                2.27
             |                     
            
                2.20
             |                                 
            
                946,049
             |            
            
                 
             |                                       
         
    
        
            | 
                8/2/2017
             | 
            
                +0.10 / +4.35%
             |             
            
                2.30
             |           
            
                2.40
             |               
            
                2.10
             |                           
            
                2.40
             | 
            
                2.26
             |                     
            
                2.40
             |                                 
            
                1,976,310
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/1/2017
             | 
            
                0.00 / 0.00%
             |             
            
                2.50
             |           
            
                2.50
             |               
            
                2.30
             |                           
            
                2.30
             | 
            
                2.45
             |                     
            
                2.30
             |                                 
            
                2,805,431
             |            
            
                 
             |                                       
         
    
        
            | 
                7/31/2017
             | 
            
                +0.20 / +9.52%
             |             
            
                2.10
             |           
            
                2.30
             |               
            
                2.10
             |                           
            
                2.30
             | 
            
                2.26
             |                     
            
                2.30
             |                                 
            
                1,713,829
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/28/2017
             | 
            
                0.00 / 0.00%
             |             
            
                2.10
             |           
            
                2.20
             |               
            
                2.00
             |                           
            
                2.10
             | 
            
                2.09
             |                     
            
                2.10
             |                                 
            
                1,608,500
             |            
            
                 
             |                                       
         
    
        
            | 
                7/27/2017
             | 
            
                0.00 / 0.00%
             |             
            
                2.10
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.10
             | 
            
                2.08
             |                     
            
                2.10
             |                                 
            
                324,110
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/26/2017
             | 
            
                0.00 / 0.00%
             |             
            
                2.10
             |           
            
                2.20
             |               
            
                2.00
             |                           
            
                2.10
             | 
            
                2.10
             |                     
            
                2.10
             |                                 
            
                2,594,220
             |            
            
                 
             |                                       
         
    
        
            | 
                7/25/2017
             | 
            
                +0.10 / +5.00%
             |             
            
                2.00
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.10
             | 
            
                2.04
             |                     
            
                2.10
             |                                 
            
                1,090,552
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/24/2017
             | 
            
                0.00 / 0.00%
             |             
            
                2.10
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.00
             | 
            
                2.02
             |                     
            
                2.00
             |                                 
            
                1,102,410
             |            
            
                 
             |                                       
         
    
        
            | 
                7/21/2017
             | 
            
                +0.10 / +5.26%
             |             
            
                1.90
             |           
            
                2.00
             |               
            
                1.90
             |                           
            
                2.00
             | 
            
                1.97
             |                     
            
                2.00
             |                                 
            
                1,152,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/20/2017
             | 
            
                -0.20 / -9.52%
             |             
            
                2.00
             |           
            
                2.10
             |               
            
                1.90
             |                           
            
                1.90
             | 
            
                1.98
             |                     
            
                1.90
             |                                 
            
                947,841
             |            
            
                 
             |                                       
         
    
        
            | 
                7/19/2017
             | 
            
                +0.10 / +5.00%
             |             
            
                2.00
             |           
            
                2.10
             |               
            
                1.90
             |                           
            
                2.10
             | 
            
                2.00
             |                     
            
                2.10
             |                                 
            
                741,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/18/2017
             | 
            
                0.00 / 0.00%
             |             
            
                2.10
             |           
            
                2.10
             |               
            
                1.90
             |                           
            
                2.00
             | 
            
                2.00
             |                     
            
                2.00
             |                                 
            
                259,230
             |            
            
                 
             |                                       
         
    
        
            | 
                7/17/2017
             | 
            
                -0.10 / -4.76%
             |             
            
                2.00
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.00
             | 
            
                2.00
             |                     
            
                2.00
             |                                 
            
                971,517
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/14/2017
             | 
            
                0.00 / 0.00%
             |             
            
                2.10
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.10
             | 
            
                2.04
             |                     
            
                2.10
             |                                 
            
                431,690
             |            
            
                 
             |                                       
         
    
        
            | 
                7/13/2017
             | 
            
                +0.10 / +5.00%
             |             
            
                2.10
             |           
            
                2.10
             |               
            
                1.90
             |                           
            
                2.10
             | 
            
                2.00
             |                     
            
                2.10
             |                                 
            
                282,860
             |  
            
                 
             |                                                              
             
    
         
    
    
 |