| 
                 
                    Closing price on 11/10/2020
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    5.11 | 
                 
                
                    | High | 
                    5.30 | 
                 
                
                    | Low | 
                    5.11 | 
                     
                
                    | Volume | 
                    43,260 | 
                                 
                
                    | Split-adjusted Price | 
                    3.96 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
YBM Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                11/10/2020
             | 
            
                -0.08 / -1.52%
             |             
            
                5.11
             |           
            
                5.30
             |               
            
                5.11
             |                           
            
                5.20
             | 
            
                5.16
             |                     
            
                3.96
             |                                 
            
                43,260
             |            
            
                 
             |                                       
         
    
        
            | 
                11/9/2020
             | 
            
                +0.11 / +2.13%
             |             
            
                5.17
             |           
            
                5.30
             |               
            
                4.90
             |                           
            
                5.28
             | 
            
                5.09
             |                     
            
                4.02
             |                                 
            
                43,520
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/6/2020
             | 
            
                0.00 / 0.00%
             |             
            
                5.06
             |           
            
                5.30
             |               
            
                5.05
             |                           
            
                5.17
             | 
            
                5.09
             |                     
            
                3.93
             |                                 
            
                25,520
             |            
            
                 
             |                                       
         
    
        
            | 
                11/5/2020
             | 
            
                -0.20 / -3.72%
             |             
            
                5.74
             |           
            
                5.74
             |               
            
                5.03
             |                           
            
                5.17
             | 
            
                5.52
             |                     
            
                3.93
             |                                 
            
                110,330
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/4/2020
             | 
            
                +0.35 / +6.97%
             |             
            
                5.37
             |           
            
                5.37
             |               
            
                5.37
             |                           
            
                5.37
             | 
            
                5.37
             |                     
            
                4.08
             |                                 
            
                37,380
             |            
            
                 
             |                                       
         
    
        
            | 
                11/3/2020
             | 
            
                +0.32 / +6.81%
             |             
            
                5.02
             |           
            
                5.02
             |               
            
                5.02
             |                           
            
                5.02
             | 
            
                5.02
             |                     
            
                3.82
             |                                 
            
                20,580
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/2/2020
             | 
            
                +0.30 / +6.82%
             |             
            
                4.50
             |           
            
                4.70
             |               
            
                4.50
             |                           
            
                4.70
             | 
            
                4.67
             |                     
            
                3.57
             |                                 
            
                71,070
             |            
            
                 
             |                                       
         
    
        
            | 
                10/30/2020
             | 
            
                -0.01 / -0.23%
             |             
            
                4.47
             |           
            
                4.47
             |               
            
                4.33
             |                           
            
                4.40
             | 
            
                4.36
             |                     
            
                3.35
             |                                 
            
                700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/29/2020
             | 
            
                +0.09 / +2.08%
             |             
            
                4.47
             |           
            
                4.47
             |               
            
                4.30
             |                           
            
                4.41
             | 
            
                4.40
             |                     
            
                3.35
             |                                 
            
                6,370
             |            
            
                 
             |                                       
         
    
        
            | 
                10/28/2020
             | 
            
                -0.02 / -0.46%
             |             
            
                4.34
             |           
            
                4.35
             |               
            
                4.30
             |                           
            
                4.32
             | 
            
                4.33
             |                     
            
                3.29
             |                                 
            
                31,380
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/27/2020
             | 
            
                +0.01 / +0.23%
             |             
            
                4.50
             |           
            
                4.50
             |               
            
                4.33
             |                           
            
                4.34
             | 
            
                4.35
             |                     
            
                3.30
             |                                 
            
                19,300
             |            
            
                 
             |                                       
         
    
        
            | 
                10/26/2020
             | 
            
                -0.17 / -3.78%
             |             
            
                4.58
             |           
            
                4.58
             |               
            
                4.31
             |                           
            
                4.33
             | 
            
                4.45
             |                     
            
                3.29
             |                                 
            
                15,740
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/23/2020
             | 
            
                0.00 / 0.00%
             |             
            
                4.54
             |           
            
                4.60
             |               
            
                4.50
             |                           
            
                4.50
             | 
            
                4.51
             |                     
            
                3.42
             |                                 
            
                7,090
             |            
            
                 
             |                                       
         
    
        
            | 
                10/22/2020
             | 
            
                0.00 / 0.00%
             |             
            
                4.50
             |           
            
                4.50
             |               
            
                4.45
             |                           
            
                4.50
             | 
            
                4.49
             |                     
            
                3.42
             |                                 
            
                1,445,813
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/21/2020
             | 
            
                +0.14 / +3.21%
             |             
            
                4.49
             |           
            
                4.50
             |               
            
                4.36
             |                           
            
                4.50
             | 
            
                4.44
             |                     
            
                3.42
             |                                 
            
                20,290
             |            
            
                 
             |                                       
         
    
        
            | 
                10/20/2020
             | 
            
                -0.14 / -3.11%
             |             
            
                4.30
             |           
            
                4.53
             |               
            
                4.30
             |                           
            
                4.36
             | 
            
                4.36
             |                     
            
                3.32
             |                                 
            
                1,290
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/19/2020
             | 
            
                +0.05 / +1.12%
             |             
            
                4.49
             |           
            
                4.61
             |               
            
                4.45
             |                           
            
                4.50
             | 
            
                4.49
             |                     
            
                3.42
             |                                 
            
                1,974,699
             |            
            
                 
             |                                       
         
    
        
            | 
                10/16/2020
             | 
            
                +0.06 / +1.37%
             |             
            
                4.45
             |           
            
                4.45
             |               
            
                4.40
             |                           
            
                4.45
             | 
            
                4.45
             |                     
            
                3.38
             |                                 
            
                955,622
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/15/2020
             | 
            
                0.00 / 0.00%
             |             
            
                4.39
             |           
            
                4.39
             |               
            
                4.32
             |                           
            
                4.39
             | 
            
                4.39
             |                     
            
                3.34
             |                                 
            
                4,400
             |            
            
                 
             |                                       
         
    
        
            | 
                10/14/2020
             | 
            
                0.00 / 0.00%
             |             
            
                4.39
             |           
            
                4.40
             |               
            
                4.38
             |                           
            
                4.39
             | 
            
                4.39
             |                     
            
                3.34
             |                                 
            
                6,290
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/13/2020
             | 
            
                0.00 / 0.00%
             |             
            
                4.40
             |           
            
                4.40
             |               
            
                4.39
             |                           
            
                4.39
             | 
            
                4.39
             |                     
            
                3.34
             |                                 
            
                6,960
             |            
            
                 
             |                                       
         
    
        
            | 
                10/12/2020
             | 
            
                +0.07 / +1.62%
             |             
            
                4.35
             |           
            
                4.44
             |               
            
                4.35
             |                           
            
                4.39
             | 
            
                4.36
             |                     
            
                3.34
             |                                 
            
                11,240
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/9/2020
             | 
            
                0.00 / 0.00%
             |             
            
                4.33
             |           
            
                4.33
             |               
            
                4.32
             |                           
            
                4.32
             | 
            
                4.32
             |                     
            
                3.29
             |                                 
            
                920
             |            
            
                 
             |                                       
         
    
        
            | 
                10/8/2020
             | 
            
                0.00 / 0.00%
             |             
            
                4.35
             |           
            
                4.35
             |               
            
                4.30
             |                           
            
                4.32
             | 
            
                4.32
             |                     
            
                3.29
             |                                 
            
                5,850
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/7/2020
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.33
             |               
            
                4.20
             |                           
            
                4.32
             | 
            
                4.28
             |                     
            
                3.29
             |                                 
            
                49,010
             |            
            
                 
             |                                       
         
    
        
            | 
                10/6/2020
             | 
            
                +0.04 / +0.93%
             |             
            
                4.28
             |           
            
                4.32
             |               
            
                4.28
             |                           
            
                4.32
             | 
            
                4.29
             |                     
            
                3.29
             |                                 
            
                23,780
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/5/2020
             | 
            
                +0.17 / +4.14%
             |             
            
                4.38
             |           
            
                4.38
             |               
            
                4.13
             |                           
            
                4.28
             | 
            
                4.30
             |                     
            
                3.26
             |                                 
            
                9,070
             |            
            
                 
             |                                       
         
    
        
            | 
                10/2/2020
             | 
            
                -0.19 / -4.42%
             |             
            
                4.30
             |           
            
                4.30
             |               
            
                4.11
             |                           
            
                4.11
             | 
            
                4.16
             |                     
            
                3.13
             |                                 
            
                19,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/1/2020
             | 
            
                -0.01 / -0.23%
             |             
            
                4.31
             |           
            
                4.32
             |               
            
                4.10
             |                           
            
                4.30
             | 
            
                4.26
             |                     
            
                3.27
             |                                 
            
                14,090
             |            
            
                 
             |                                       
         
    
        
            | 
                9/30/2020
             | 
            
                -0.08 / -1.82%
             |             
            
                4.39
             |           
            
                4.39
             |               
            
                4.22
             |                           
            
                4.31
             | 
            
                4.29
             |                     
            
                3.28
             |                                 
            
                5,600
             |  
            
                 
             |                                                              
             
    
         
    
    
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