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            | 
                    Closing price on 12/20/2018
                 |  |  
    
        |           
                
                    | Open | 4.56 |  
                    | High | 4.60 |  
                    | Low | 4.55 |  
                    | Volume | 37,140 |  
                    | Split-adjusted Price | 4.57 |  
                
             | 
 |  QBS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 12/20/2018 | +0.01 / +0.22% | 4.56 | 4.60 | 4.55 | 4.57 | 4.55 | 4.57 | 37,140 |   |  
            | 12/19/2018 | -0.08 / -1.72% | 4.60 | 4.60 | 4.40 | 4.56 | 4.53 | 4.56 | 37,980 |   |  			
            | 12/18/2018 | -0.06 / -1.28% | 4.70 | 4.70 | 4.38 | 4.64 | 4.51 | 4.64 | 149,370 |   |  
            | 12/17/2018 | -0.06 / -1.26% | 4.75 | 4.76 | 4.70 | 4.70 | 4.70 | 4.70 | 27,010 |   |  			
            | 12/14/2018 | +0.05 / +1.06% | 4.75 | 4.76 | 4.71 | 4.76 | 4.72 | 4.76 | 44,460 |   |  
            | 12/13/2018 | 0.00 / 0.00% | 4.71 | 4.71 | 4.70 | 4.71 | 4.71 | 4.71 | 12,990 |   |  			
            | 12/12/2018 | +0.02 / +0.43% | 4.78 | 4.78 | 4.68 | 4.71 | 4.70 | 4.71 | 39,330 |   |  
            | 12/11/2018 | +0.01 / +0.21% | 4.78 | 4.78 | 4.68 | 4.69 | 4.71 | 4.69 | 36,100 |   |  			
            | 12/10/2018 | -0.02 / -0.43% | 4.70 | 4.78 | 4.68 | 4.68 | 4.71 | 4.68 | 83,020 |   |  
            | 12/7/2018 | -0.23 / -4.67% | 4.86 | 4.95 | 4.70 | 4.70 | 4.75 | 4.70 | 181,850 |   |  			
            | 12/6/2018 | -0.05 / -1.00% | 4.96 | 4.98 | 4.80 | 4.93 | 4.85 | 4.93 | 74,410 |   |  
            | 12/5/2018 | -0.06 / -1.19% | 5.00 | 5.04 | 4.89 | 4.98 | 4.98 | 4.98 | 66,070 |   |  			
            | 12/4/2018 | +0.04 / +0.80% | 5.14 | 5.14 | 4.95 | 5.04 | 4.99 | 5.04 | 32,080 |   |  
            | 12/3/2018 | 0.00 / 0.00% | 5.19 | 5.19 | 4.96 | 5.00 | 5.02 | 5.00 | 27,900 |   |  			
            | 11/30/2018 | +0.02 / +0.40% | 5.16 | 5.16 | 4.95 | 5.00 | 4.99 | 5.00 | 47,090 |   |  
            | 11/29/2018 | -0.20 / -3.86% | 5.26 | 5.26 | 4.98 | 4.98 | 5.07 | 4.98 | 49,690 |   |  			
            | 11/28/2018 | -0.01 / -0.19% | 5.01 | 5.25 | 5.01 | 5.18 | 5.15 | 5.18 | 22,320 |   |  
            | 11/27/2018 | +0.07 / +1.37% | 5.00 | 5.25 | 5.00 | 5.19 | 5.06 | 5.19 | 43,300 |   |  			
            | 11/26/2018 | +0.12 / +2.40% | 5.00 | 5.30 | 4.90 | 5.12 | 5.13 | 5.12 | 149,010 |   |  
            | 11/23/2018 | +0.18 / +3.73% | 4.85 | 5.00 | 4.80 | 5.00 | 4.95 | 5.00 | 165,800 |   |  			
            | 11/22/2018 | +0.02 / +0.42% | 4.89 | 4.89 | 4.79 | 4.82 | 4.81 | 4.82 | 84,900 |   |  
            | 11/21/2018 | +0.12 / +2.56% | 4.68 | 4.80 | 4.66 | 4.80 | 4.74 | 4.80 | 189,040 |   |  			
            | 11/20/2018 | -0.05 / -1.06% | 4.70 | 4.73 | 4.68 | 4.68 | 4.72 | 4.68 | 22,900 |   |  
            | 11/19/2018 | +0.01 / +0.21% | 4.72 | 4.75 | 4.70 | 4.73 | 4.71 | 4.73 | 61,810 |   |  			
            | 11/16/2018 | +0.02 / +0.43% | 4.71 | 4.77 | 4.70 | 4.72 | 4.72 | 4.72 | 97,940 |   |  
            | 11/15/2018 | 0.00 / 0.00% | 4.70 | 4.75 | 4.68 | 4.70 | 4.72 | 4.70 | 141,630 |   |  			
            | 11/14/2018 | -0.07 / -1.47% | 4.77 | 4.77 | 4.68 | 4.70 | 4.74 | 4.70 | 59,340 |   |  
            | 11/13/2018 | -0.02 / -0.42% | 4.77 | 4.77 | 4.60 | 4.77 | 4.69 | 4.77 | 62,250 |   |  			
            | 11/12/2018 | -0.01 / -0.21% | 4.76 | 4.83 | 4.74 | 4.79 | 4.77 | 4.79 | 158,770 |   |  
            | 11/9/2018 | +0.09 / +1.91% | 4.82 | 4.82 | 4.70 | 4.80 | 4.74 | 4.80 | 46,430 |   |  |