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            | 
                    Closing price on 9/19/2018
                 |  |  
    
        |           
                
                    | Open | 5.07 |  
                    | High | 5.44 |  
                    | Low | 5.07 |  
                    | Volume | 336,170 |  
                    | Split-adjusted Price | 5.25 |  
                
             | 
 |  QBS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 9/19/2018 | +0.15 / +2.94% | 5.07 | 5.44 | 5.07 | 5.25 | 5.25 | 5.25 | 336,170 |   |  
            | 9/18/2018 | +0.10 / +2.00% | 5.11 | 5.15 | 4.98 | 5.10 | 5.10 | 5.10 | 305,290 |   |  			
            | 9/17/2018 | -0.15 / -2.91% | 5.12 | 5.15 | 4.80 | 5.00 | 5.06 | 5.00 | 466,610 |   |  
            | 9/14/2018 | -0.10 / -1.90% | 5.18 | 5.25 | 5.14 | 5.15 | 5.19 | 5.15 | 182,070 |   |  			
            | 9/13/2018 | -0.09 / -1.69% | 5.34 | 5.34 | 5.14 | 5.25 | 5.20 | 5.25 | 332,540 |   |  
            | 9/12/2018 | +0.23 / +4.50% | 5.45 | 5.45 | 5.25 | 5.34 | 5.39 | 5.34 | 371,490 |   |  			
            | 9/11/2018 | +0.33 / +6.90% | 4.89 | 5.11 | 4.83 | 5.11 | 4.97 | 5.11 | 446,540 |   |  
            | 9/10/2018 | +0.08 / +1.70% | 4.69 | 4.89 | 4.63 | 4.78 | 4.79 | 4.78 | 527,770 |   |  			
            | 9/7/2018 | +0.05 / +1.08% | 4.62 | 4.70 | 4.61 | 4.70 | 4.64 | 4.70 | 275,090 |   |  
            | 9/6/2018 | -0.11 / -2.31% | 4.76 | 4.76 | 4.60 | 4.65 | 4.64 | 4.65 | 231,290 |   |  			
            | 9/5/2018 | -0.07 / -1.45% | 4.83 | 4.83 | 4.70 | 4.76 | 4.77 | 4.76 | 179,370 |   |  
            | 9/4/2018 | 0.00 / 0.00% | 4.87 | 4.87 | 4.73 | 4.83 | 4.83 | 4.83 | 528,690 |   |  			
            | 8/31/2018 | +0.03 / +0.63% | 4.83 | 4.84 | 4.73 | 4.83 | 4.79 | 4.83 | 339,650 |   |  
            | 8/30/2018 | +0.10 / +2.13% | 4.70 | 4.80 | 4.59 | 4.80 | 4.66 | 4.80 | 352,770 |   |  			
            | 8/29/2018 | -0.06 / -1.26% | 4.70 | 4.78 | 4.64 | 4.70 | 4.69 | 4.70 | 137,320 |   |  
            | 8/28/2018 | -0.11 / -2.26% | 4.83 | 4.94 | 4.69 | 4.76 | 4.77 | 4.76 | 207,670 |   |  			
            | 8/27/2018 | +0.22 / +4.73% | 4.63 | 4.94 | 4.63 | 4.87 | 4.85 | 4.87 | 520,600 |   |  
            | 8/24/2018 | +0.27 / +6.16% | 4.38 | 4.65 | 4.36 | 4.65 | 4.46 | 4.65 | 548,940 |   |  			
            | 8/23/2018 | 0.00 / 0.00% | 4.44 | 4.45 | 4.30 | 4.38 | 4.36 | 4.38 | 488,230 |   |  
            | 8/22/2018 | +0.22 / +5.29% | 4.29 | 4.40 | 4.29 | 4.38 | 4.36 | 4.38 | 102,000 |   |  			
            | 8/21/2018 | -0.29 / -6.52% | 4.45 | 4.45 | 4.16 | 4.16 | 4.22 | 4.16 | 341,030 |   |  
            | 8/20/2018 | -0.30 / -6.32% | 4.71 | 4.75 | 4.45 | 4.45 | 4.54 | 4.45 | 415,910 |   |  			
            | 8/17/2018 | -0.06 / -1.25% | 4.85 | 4.86 | 4.51 | 4.75 | 4.75 | 4.75 | 414,990 |   |  
            | 8/16/2018 | -0.09 / -1.84% | 4.88 | 4.88 | 4.76 | 4.81 | 4.83 | 4.81 | 627,540 |   |  			
            | 8/15/2018 | 0.00 / 0.00% | 4.89 | 5.03 | 4.88 | 4.90 | 4.91 | 4.90 | 149,290 |   |  
            | 8/14/2018 | 0.00 / 0.00% | 4.90 | 4.99 | 4.88 | 4.90 | 4.94 | 4.90 | 64,610 |   |  			
            | 8/13/2018 | -0.10 / -2.00% | 5.00 | 5.00 | 4.88 | 4.90 | 4.92 | 4.90 | 309,970 |   |  
            | 8/10/2018 | -0.02 / -0.40% | 5.02 | 5.02 | 4.89 | 5.00 | 4.97 | 5.00 | 294,940 |   |  			
            | 8/9/2018 | -0.03 / -0.59% | 5.13 | 5.13 | 5.01 | 5.02 | 5.05 | 5.02 | 60,440 |   |  
            | 8/8/2018 | +0.24 / +4.99% | 4.81 | 5.05 | 4.80 | 5.05 | 4.93 | 5.05 | 210,780 |   |  |