| 
                 
                    Closing price on 8/13/2020
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    4.64 | 
                 
                
                    | High | 
                    4.64 | 
                 
                
                    | Low | 
                    4.64 | 
                     
                
                    | Volume | 
                    66,480 | 
                                 
                
                    | Split-adjusted Price | 
                    3.53 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
YBM Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/13/2020
             | 
            
                +0.30 / +6.91%
             |             
            
                4.64
             |           
            
                4.64
             |               
            
                4.64
             |                           
            
                4.64
             | 
            
                4.64
             |                     
            
                3.53
             |                                 
            
                66,480
             |            
            
                 
             |                                       
         
    
        
            | 
                8/12/2020
             | 
            
                +0.28 / +6.90%
             |             
            
                4.34
             |           
            
                4.34
             |               
            
                4.06
             |                           
            
                4.34
             | 
            
                4.25
             |                     
            
                3.30
             |                                 
            
                34,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/11/2020
             | 
            
                +0.26 / +6.84%
             |             
            
                3.86
             |           
            
                4.06
             |               
            
                3.86
             |                           
            
                4.06
             | 
            
                4.03
             |                     
            
                3.09
             |                                 
            
                28,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/10/2020
             | 
            
                0.00 / 0.00%
             |             
            
                3.84
             |           
            
                3.88
             |               
            
                3.78
             |                           
            
                3.80
             | 
            
                3.85
             |                     
            
                2.89
             |                                 
            
                4,420
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/7/2020
             | 
            
                -0.04 / -1.04%
             |             
            
                3.83
             |           
            
                3.84
             |               
            
                3.80
             |                           
            
                3.80
             | 
            
                3.82
             |                     
            
                2.89
             |                                 
            
                6,130
             |            
            
                 
             |                                       
         
    
        
            | 
                8/6/2020
             | 
            
                +0.04 / +1.05%
             |             
            
                3.80
             |           
            
                3.84
             |               
            
                3.75
             |                           
            
                3.84
             | 
            
                3.78
             |                     
            
                2.92
             |                                 
            
                7,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/5/2020
             | 
            
                -0.10 / -2.56%
             |             
            
                3.81
             |           
            
                3.89
             |               
            
                3.80
             |                           
            
                3.80
             | 
            
                3.83
             |                     
            
                2.89
             |                                 
            
                2,960
             |            
            
                 
             |                                       
         
    
        
            | 
                8/4/2020
             | 
            
                -0.08 / -2.01%
             |             
            
                3.98
             |           
            
                3.98
             |               
            
                3.90
             |                           
            
                3.90
             | 
            
                3.94
             |                     
            
                2.97
             |                                 
            
                450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/3/2020
             | 
            
                -0.06 / -1.49%
             |             
            
                3.97
             |           
            
                3.98
             |               
            
                3.97
             |                           
            
                3.98
             | 
            
                3.98
             |                     
            
                3.03
             |                                 
            
                1,780
             |            
            
                 
             |                                       
         
    
        
            | 
                7/31/2020
             | 
            
                +0.15 / +3.86%
             |             
            
                4.04
             |           
            
                4.04
             |               
            
                4.04
             |                           
            
                4.04
             | 
            
                4.04
             |                     
            
                3.07
             |                                 
            
                10
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/30/2020
             | 
            
                -0.03 / -0.77%
             |             
            
                3.66
             |           
            
                4.09
             |               
            
                3.66
             |                           
            
                3.89
             | 
            
                3.83
             |                     
            
                2.96
             |                                 
            
                3,320
             |            
            
                 
             |                                       
         
    
        
            | 
                7/29/2020
             | 
            
                +0.04 / +1.03%
             |             
            
                3.97
             |           
            
                3.97
             |               
            
                3.62
             |                           
            
                3.92
             | 
            
                3.92
             |                     
            
                2.98
             |                                 
            
                1,020
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/28/2020
             | 
            
                +0.16 / +4.30%
             |             
            
                3.55
             |           
            
                3.88
             |               
            
                3.55
             |                           
            
                3.88
             | 
            
                3.65
             |                     
            
                2.95
             |                                 
            
                15,070
             |            
            
                 
             |                                       
         
    
        
            | 
                7/27/2020
             | 
            
                -0.28 / -7.00%
             |             
            
                3.73
             |           
            
                4.00
             |               
            
                3.72
             |                           
            
                3.72
             | 
            
                3.74
             |                     
            
                2.83
             |                                 
            
                9,630
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/24/2020
             | 
            
                -0.15 / -3.61%
             |             
            
                4.01
             |           
            
                4.01
             |               
            
                3.90
             |                           
            
                4.00
             | 
            
                3.91
             |                     
            
                3.04
             |                                 
            
                4,090
             |            
            
                 
             |                                       
         
    
        
            | 
                7/23/2020
             | 
            
                +0.14 / +3.49%
             |             
            
                4.01
             |           
            
                4.19
             |               
            
                4.01
             |                           
            
                4.15
             | 
            
                4.16
             |                     
            
                3.16
             |                                 
            
                23,310
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/22/2020
             | 
            
                -0.14 / -3.37%
             |             
            
                4.13
             |           
            
                4.14
             |               
            
                4.01
             |                           
            
                4.01
             | 
            
                4.13
             |                     
            
                3.05
             |                                 
            
                3,870
             |            
            
                 
             |                                       
         
    
        
            | 
                7/21/2020
             | 
            
                -0.01 / -0.24%
             |             
            
                4.15
             |           
            
                4.16
             |               
            
                4.14
             |                           
            
                4.15
             | 
            
                4.16
             |                     
            
                3.16
             |                                 
            
                14,430
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/20/2020
             | 
            
                +0.06 / +1.46%
             |             
            
                4.10
             |           
            
                4.16
             |               
            
                4.09
             |                           
            
                4.16
             | 
            
                4.13
             |                     
            
                3.16
             |                                 
            
                2,250
             |            
            
                 
             |                                       
         
    
        
            | 
                7/17/2020
             | 
            
                0.00 / 0.00%
             |             
            
                4.01
             |           
            
                4.10
             |               
            
                3.95
             |                           
            
                4.10
             | 
            
                4.00
             |                     
            
                3.12
             |                                 
            
                16,270
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/16/2020
             | 
            
                +0.06 / +1.49%
             |             
            
                4.10
             |           
            
                4.10
             |               
            
                4.03
             |                           
            
                4.10
             | 
            
                4.08
             |                     
            
                3.12
             |                                 
            
                1,190
             |            
            
                 
             |                                       
         
    
        
            | 
                7/15/2020
             | 
            
                -0.06 / -1.46%
             |             
            
                3.90
             |           
            
                4.10
             |               
            
                3.90
             |                           
            
                4.04
             | 
            
                4.02
             |                     
            
                3.07
             |                                 
            
                2,240
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/14/2020
             | 
            
                +0.09 / +2.24%
             |             
            
                4.01
             |           
            
                4.10
             |               
            
                3.99
             |                           
            
                4.10
             | 
            
                4.05
             |                     
            
                3.12
             |                                 
            
                3,780
             |            
            
                 
             |                                       
         
    
        
            | 
                7/13/2020
             | 
            
                +0.01 / +0.25%
             |             
            
                4.01
             |           
            
                4.11
             |               
            
                4.00
             |                           
            
                4.01
             | 
            
                4.03
             |                     
            
                3.05
             |                                 
            
                1,880
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/10/2020
             | 
            
                -0.14 / -3.38%
             |             
            
                4.14
             |           
            
                4.14
             |               
            
                3.99
             |                           
            
                4.00
             | 
            
                4.07
             |                     
            
                3.04
             |                                 
            
                8,910
             |            
            
                 
             |                                       
         
    
        
            | 
                7/9/2020
             | 
            
                +0.18 / +4.55%
             |             
            
                3.96
             |           
            
                4.14
             |               
            
                3.93
             |                           
            
                4.14
             | 
            
                4.06
             |                     
            
                3.15
             |                                 
            
                3,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/8/2020
             | 
            
                -0.20 / -4.81%
             |             
            
                4.16
             |           
            
                4.16
             |               
            
                3.96
             |                           
            
                3.96
             | 
            
                4.06
             |                     
            
                3.01
             |                                 
            
                6,900
             |            
            
                 
             |                                       
         
    
        
            | 
                7/7/2020
             | 
            
                -0.31 / -6.94%
             |             
            
                4.46
             |           
            
                4.46
             |               
            
                4.16
             |                           
            
                4.16
             | 
            
                4.19
             |                     
            
                3.16
             |                                 
            
                16,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/6/2020
             | 
            
                -0.12 / -2.61%
             |             
            
                4.27
             |           
            
                4.52
             |               
            
                4.27
             |                           
            
                4.47
             | 
            
                4.30
             |                     
            
                3.40
             |                                 
            
                10,930
             |            
            
                 
             |                                       
         
    
        
            | 
                7/3/2020
             | 
            
                0.00 / 0.00%
             |             
            
                4.30
             |           
            
                4.59
             |               
            
                4.27
             |                           
            
                4.59
             | 
            
                4.44
             |                     
            
                3.49
             |                                 
            
                3,150
             |  
            
                 
             |                                                              
             
    
         
    
    
 |