| 
                 
                    Closing price on 5/25/2016
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    4.20 | 
                 
                
                    | High | 
                    4.30 | 
                 
                
                    | Low | 
                    4.10 | 
                     
                
                    | Volume | 
                    252,900 | 
                                 
                
                    | Split-adjusted Price | 
                    4.10 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
ACM Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/25/2016
             | 
            
                +0.20 / +4.88%
             |             
            
                4.20
             |           
            
                4.30
             |               
            
                4.10
             |                           
            
                4.30
             | 
            
                4.20
             |                     
            
                4.10
             |                                 
            
                252,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2016
             | 
            
                0.00 / 0.00%
             |             
            
                4.10
             |           
            
                4.30
             |               
            
                4.10
             |                           
            
                4.10
             | 
            
                4.14
             |                     
            
                3.91
             |                                 
            
                593,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/23/2016
             | 
            
                -0.10 / -2.38%
             |             
            
                4.20
             |           
            
                4.30
             |               
            
                4.10
             |                           
            
                4.10
             | 
            
                4.17
             |                     
            
                3.91
             |                                 
            
                270,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/20/2016
             | 
            
                +0.10 / +2.44%
             |             
            
                4.10
             |           
            
                4.30
             |               
            
                4.10
             |                           
            
                4.20
             | 
            
                4.18
             |                     
            
                4.01
             |                                 
            
                422,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/19/2016
             | 
            
                0.00 / 0.00%
             |             
            
                4.10
             |           
            
                4.20
             |               
            
                4.00
             |                           
            
                4.10
             | 
            
                4.10
             |                     
            
                3.91
             |                                 
            
                345,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2016
             | 
            
                -0.10 / -2.38%
             |             
            
                4.10
             |           
            
                4.20
             |               
            
                4.00
             |                           
            
                4.10
             | 
            
                4.09
             |                     
            
                3.91
             |                                 
            
                335,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/17/2016
             | 
            
                +0.10 / +2.44%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.10
             |                           
            
                4.20
             | 
            
                4.10
             |                     
            
                4.01
             |                                 
            
                388,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2016
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.10
             |                           
            
                4.10
             | 
            
                4.17
             |                     
            
                3.91
             |                                 
            
                264,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/13/2016
             | 
            
                -0.10 / -2.38%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.10
             |                           
            
                4.10
             | 
            
                4.10
             |                     
            
                3.91
             |                                 
            
                407,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/12/2016
             | 
            
                -0.10 / -2.33%
             |             
            
                4.20
             |           
            
                4.30
             |               
            
                4.20
             |                           
            
                4.20
             | 
            
                4.30
             |                     
            
                4.01
             |                                 
            
                243,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/11/2016
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.40
             |               
            
                4.20
             |                           
            
                4.30
             | 
            
                4.30
             |                     
            
                4.10
             |                                 
            
                355,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2016
             | 
            
                +0.20 / +4.88%
             |             
            
                4.10
             |           
            
                4.30
             |               
            
                4.10
             |                           
            
                4.30
             | 
            
                4.19
             |                     
            
                4.10
             |                                 
            
                756,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2016
             | 
            
                +0.10 / +2.50%
             |             
            
                4.10
             |           
            
                4.30
             |               
            
                4.10
             |                           
            
                4.10
             | 
            
                4.19
             |                     
            
                3.91
             |                                 
            
                838,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/6/2016
             | 
            
                -0.10 / -2.44%
             |             
            
                4.10
             |           
            
                4.10
             |               
            
                4.00
             |                           
            
                4.00
             | 
            
                4.02
             |                     
            
                3.82
             |                                 
            
                170,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/5/2016
             | 
            
                +0.10 / +2.50%
             |             
            
                4.10
             |           
            
                4.10
             |               
            
                4.00
             |                           
            
                4.10
             | 
            
                4.00
             |                     
            
                3.91
             |                                 
            
                341,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/4/2016
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.10
             |               
            
                4.00
             |                           
            
                4.00
             | 
            
                4.00
             |                     
            
                3.82
             |                                 
            
                345,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/29/2016
             | 
            
                -0.10 / -2.44%
             |             
            
                4.10
             |           
            
                4.10
             |               
            
                4.00
             |                           
            
                4.00
             | 
            
                4.01
             |                     
            
                3.82
             |                                 
            
                299,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/28/2016
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.10
             |               
            
                4.00
             |                           
            
                4.10
             | 
            
                4.01
             |                     
            
                3.91
             |                                 
            
                438,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/27/2016
             | 
            
                0.00 / 0.00%
             |             
            
                4.10
             |           
            
                4.20
             |               
            
                4.00
             |                           
            
                4.10
             | 
            
                4.10
             |                     
            
                3.91
             |                                 
            
                271,890
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2016
             | 
            
                -0.10 / -2.38%
             |             
            
                4.10
             |           
            
                4.20
             |               
            
                4.10
             |                           
            
                4.10
             | 
            
                4.13
             |                     
            
                3.91
             |                                 
            
                336,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/25/2016
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.00
             |                           
            
                4.20
             | 
            
                4.13
             |                     
            
                4.01
             |                                 
            
                473,840
             |            
            
                 
             |                                       
         
    
        
            | 
                4/22/2016
             | 
            
                -0.10 / -2.33%
             |             
            
                4.30
             |           
            
                4.30
             |               
            
                4.10
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                4.01
             |                                 
            
                348,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/21/2016
             | 
            
                +0.20 / +4.88%
             |             
            
                4.10
             |           
            
                4.30
             |               
            
                4.00
             |                           
            
                4.30
             | 
            
                4.19
             |                     
            
                4.10
             |                                 
            
                265,220
             |            
            
                 
             |                                       
         
    
        
            | 
                4/20/2016
             | 
            
                -0.10 / -2.38%
             |             
            
                4.10
             |           
            
                4.20
             |               
            
                4.10
             |                           
            
                4.10
             | 
            
                4.10
             |                     
            
                3.91
             |                                 
            
                345,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/19/2016
             | 
            
                0.00 / 0.00%
             |             
            
                4.10
             |           
            
                4.20
             |               
            
                4.00
             |                           
            
                4.20
             | 
            
                4.10
             |                     
            
                4.01
             |                                 
            
                704,200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/15/2016
             | 
            
                -0.10 / -2.33%
             |             
            
                4.30
             |           
            
                4.30
             |               
            
                4.10
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                4.01
             |                                 
            
                436,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/14/2016
             | 
            
                +0.10 / +2.38%
             |             
            
                4.20
             |           
            
                4.30
             |               
            
                4.20
             |                           
            
                4.30
             | 
            
                4.22
             |                     
            
                4.10
             |                                 
            
                247,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/13/2016
             | 
            
                0.00 / 0.00%
             |             
            
                4.30
             |           
            
                4.30
             |               
            
                4.10
             |                           
            
                4.20
             | 
            
                4.20
             |                     
            
                4.01
             |                                 
            
                467,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/12/2016
             | 
            
                +0.10 / +2.44%
             |             
            
                4.20
             |           
            
                4.30
             |               
            
                4.10
             |                           
            
                4.20
             | 
            
                4.25
             |                     
            
                4.01
             |                                 
            
                736,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/11/2016
             | 
            
                0.00 / 0.00%
             |             
            
                4.10
             |           
            
                4.30
             |               
            
                4.10
             |                           
            
                4.10
             | 
            
                4.21
             |                     
            
                3.91
             |                                 
            
                774,600
             |  
            
                 
             |                                                              
             
    
         
    
    
 |