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                    Closing price on 8/24/2018
                 
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             | 
         
         
 
    
        
                      
                
                    | Open | 
                    4.60 | 
                 
                
                    | High | 
                    4.80 | 
                 
                
                    | Low | 
                    4.50 | 
                     
                
                    | Volume | 
                    753,400 | 
                                 
                
                    | Split-adjusted Price | 
                    3.27 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
MST Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/24/2018
             | 
            
                +0.20 / +4.35%
             |             
            
                4.60
             |           
            
                4.80
             |               
            
                4.50
             |                           
            
                4.80
             | 
            
                4.67
             |                     
            
                3.27
             |                                 
            
                753,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/23/2018
             | 
            
                0.00 / 0.00%
             |             
            
                4.60
             |           
            
                4.70
             |               
            
                4.50
             |                           
            
                4.60
             | 
            
                4.60
             |                     
            
                3.14
             |                                 
            
                452,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/22/2018
             | 
            
                -0.20 / -4.17%
             |             
            
                4.80
             |           
            
                4.90
             |               
            
                4.60
             |                           
            
                4.60
             | 
            
                4.72
             |                     
            
                3.14
             |                                 
            
                1,410,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/21/2018
             | 
            
                +0.10 / +2.13%
             |             
            
                4.60
             |           
            
                4.80
             |               
            
                4.50
             |                           
            
                4.80
             | 
            
                4.71
             |                     
            
                3.27
             |                                 
            
                1,029,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/20/2018
             | 
            
                +0.10 / +2.17%
             |             
            
                4.50
             |           
            
                4.70
             |               
            
                4.40
             |                           
            
                4.70
             | 
            
                4.58
             |                     
            
                3.21
             |                                 
            
                1,461,200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/17/2018
             | 
            
                -0.20 / -4.17%
             |             
            
                4.50
             |           
            
                4.60
             |               
            
                4.40
             |                           
            
                4.60
             | 
            
                4.48
             |                     
            
                3.14
             |                                 
            
                1,981,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/16/2018
             | 
            
                -0.50 / -9.43%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.81
             |                     
            
                3.27
             |                                 
            
                1,647,200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/15/2018
             | 
            
                -0.50 / -8.62%
             |             
            
                5.80
             |           
            
                6.00
             |               
            
                5.30
             |                           
            
                5.30
             | 
            
                5.62
             |                     
            
                3.62
             |                                 
            
                1,351,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/14/2018
             | 
            
                +0.30 / +5.45%
             |             
            
                5.50
             |           
            
                5.90
             |               
            
                5.40
             |                           
            
                5.80
             | 
            
                5.70
             |                     
            
                3.96
             |                                 
            
                2,001,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/13/2018
             | 
            
                0.00 / 0.00%
             |             
            
                5.50
             |           
            
                5.60
             |               
            
                5.30
             |                           
            
                5.50
             | 
            
                5.45
             |                     
            
                3.75
             |                                 
            
                1,864,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/10/2018
             | 
            
                0.00 / 0.00%
             |             
            
                5.40
             |           
            
                5.50
             |               
            
                5.20
             |                           
            
                5.50
             | 
            
                5.35
             |                     
            
                3.75
             |                                 
            
                1,462,100
             |            
            
                 
             |                                       
         
    
        
            | 
                8/9/2018
             | 
            
                -0.10 / -1.79%
             |             
            
                5.60
             |           
            
                5.70
             |               
            
                5.30
             |                           
            
                5.50
             | 
            
                5.46
             |                     
            
                3.75
             |                                 
            
                1,646,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/8/2018
             | 
            
                +0.10 / +1.82%
             |             
            
                5.50
             |           
            
                5.60
             |               
            
                5.30
             |                           
            
                5.60
             | 
            
                5.46
             |                     
            
                3.82
             |                                 
            
                2,167,900
             |            
            
                 
             |                                       
         
    
        
            | 
                8/7/2018
             | 
            
                +0.40 / +7.84%
             |             
            
                5.10
             |           
            
                5.60
             |               
            
                5.10
             |                           
            
                5.50
             | 
            
                5.45
             |                     
            
                3.75
             |                                 
            
                2,307,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/6/2018
             | 
            
                +0.40 / +8.51%
             |             
            
                4.60
             |           
            
                5.10
             |               
            
                4.60
             |                           
            
                5.10
             | 
            
                4.88
             |                     
            
                3.48
             |                                 
            
                2,011,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/3/2018
             | 
            
                +0.10 / +2.17%
             |             
            
                4.60
             |           
            
                4.80
             |               
            
                4.50
             |                           
            
                4.70
             | 
            
                4.63
             |                     
            
                3.21
             |                                 
            
                651,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/2/2018
             | 
            
                +0.10 / +2.22%
             |             
            
                4.50
             |           
            
                4.70
             |               
            
                4.40
             |                           
            
                4.60
             | 
            
                4.54
             |                     
            
                3.14
             |                                 
            
                510,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/1/2018
             | 
            
                -0.20 / -4.26%
             |             
            
                4.60
             |           
            
                4.80
             |               
            
                4.40
             |                           
            
                4.50
             | 
            
                4.61
             |                     
            
                3.07
             |                                 
            
                1,396,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/31/2018
             | 
            
                0.00 / 0.00%
             |             
            
                4.70
             |           
            
                4.80
             |               
            
                4.50
             |                           
            
                4.70
             | 
            
                4.64
             |                     
            
                3.21
             |                                 
            
                859,400
             |            
            
                 
             |                                       
         
    
        
            | 
                7/30/2018
             | 
            
                -0.10 / -2.08%
             |             
            
                4.60
             |           
            
                4.80
             |               
            
                4.60
             |                           
            
                4.70
             | 
            
                4.72
             |                     
            
                3.21
             |                                 
            
                360,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/27/2018
             | 
            
                0.00 / 0.00%
             |             
            
                4.60
             |           
            
                5.00
             |               
            
                4.60
             |                           
            
                4.80
             | 
            
                4.78
             |                     
            
                3.27
             |                                 
            
                1,540,800
             |            
            
                 
             |                                       
         
    
        
            | 
                7/26/2018
             | 
            
                +0.20 / +4.35%
             |             
            
                4.60
             |           
            
                4.80
             |               
            
                4.40
             |                           
            
                4.80
             | 
            
                4.51
             |                     
            
                3.27
             |                                 
            
                1,154,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/25/2018
             | 
            
                -0.20 / -4.17%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                4.60
             |                           
            
                4.60
             | 
            
                4.84
             |                     
            
                3.14
             |                                 
            
                1,550,100
             |            
            
                 
             |                                       
         
    
        
            | 
                7/24/2018
             | 
            
                +0.20 / +4.35%
             |             
            
                4.50
             |           
            
                4.90
             |               
            
                4.30
             |                           
            
                4.80
             | 
            
                4.61
             |                     
            
                3.27
             |                                 
            
                1,687,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/23/2018
             | 
            
                -0.10 / -2.13%
             |             
            
                4.70
             |           
            
                5.00
             |               
            
                4.60
             |                           
            
                4.60
             | 
            
                4.73
             |                     
            
                3.14
             |                                 
            
                1,372,700
             |            
            
                 
             |                                       
         
    
        
            | 
                7/20/2018
             | 
            
                +0.30 / +6.82%
             |             
            
                4.30
             |           
            
                4.80
             |               
            
                4.20
             |                           
            
                4.70
             | 
            
                4.57
             |                     
            
                3.21
             |                                 
            
                2,023,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/19/2018
             | 
            
                0.00 / 0.00%
             |             
            
                4.40
             |           
            
                4.50
             |               
            
                4.20
             |                           
            
                4.40
             | 
            
                4.32
             |                     
            
                3.00
             |                                 
            
                894,900
             |            
            
                 
             |                                       
         
    
        
            | 
                7/18/2018
             | 
            
                +0.30 / +7.32%
             |             
            
                4.20
             |           
            
                4.50
             |               
            
                4.10
             |                           
            
                4.40
             | 
            
                4.32
             |                     
            
                3.00
             |                                 
            
                1,856,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/17/2018
             | 
            
                +0.30 / +7.89%
             |             
            
                3.80
             |           
            
                4.10
             |               
            
                3.70
             |                           
            
                4.10
             | 
            
                3.95
             |                     
            
                2.80
             |                                 
            
                2,154,400
             |            
            
                 
             |                                       
         
    
        
            | 
                7/16/2018
             | 
            
                0.00 / 0.00%
             |             
            
                3.80
             |           
            
                3.80
             |               
            
                3.70
             |                           
            
                3.80
             | 
            
                3.71
             |                     
            
                2.59
             |                                 
            
                368,500
             |  
            
                 
             |                                                              
             
    
         
    
    
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 Market Update 
        
            
                Last updated at 2:10:00 PM
                                                                
            
            
            
            
        
        
     
 
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