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            | 
                    Closing price on 8/21/2018
                 |  |  
    
        |           
                
                    | Open | 4.45 |  
                    | High | 4.45 |  
                    | Low | 4.16 |  
                    | Volume | 341,030 |  
                    | Split-adjusted Price | 4.16 |  
                
             | 
 |  QBS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  			
            | 8/7/2018 | -0.09 / -1.84% | 4.88 | 4.97 | 4.81 | 4.81 | 4.87 | 4.81 | 260,680 |   |  
            | 8/6/2018 | -0.23 / -4.48% | 5.10 | 5.15 | 4.85 | 4.90 | 4.96 | 4.90 | 504,470 |   |  			
            | 8/3/2018 | -0.17 / -3.21% | 5.30 | 5.30 | 5.12 | 5.13 | 5.19 | 5.13 | 347,050 |   |  
            | 8/2/2018 | 0.00 / 0.00% | 5.30 | 5.35 | 5.10 | 5.30 | 5.22 | 5.30 | 539,780 |   |  			
            | 8/1/2018 | -0.05 / -0.93% | 5.30 | 5.50 | 5.20 | 5.30 | 5.28 | 5.30 | 286,740 |   |  
            | 7/31/2018 | -0.12 / -2.19% | 5.41 | 5.45 | 5.30 | 5.35 | 5.34 | 5.35 | 221,890 |   |  			
            | 7/30/2018 | -0.19 / -3.36% | 5.60 | 5.70 | 5.47 | 5.47 | 5.54 | 5.47 | 459,660 |   |  
            | 7/27/2018 | -0.13 / -2.25% | 5.95 | 5.95 | 5.57 | 5.66 | 5.69 | 5.66 | 655,160 |   |  			
            | 7/26/2018 | +0.11 / +1.94% | 5.66 | 5.88 | 5.64 | 5.79 | 5.72 | 5.79 | 388,230 |   |  
            | 7/25/2018 | -0.17 / -2.91% | 5.98 | 5.98 | 5.65 | 5.68 | 5.75 | 5.68 | 401,620 |   |  			
            | 7/24/2018 | -0.01 / -0.17% | 5.94 | 5.94 | 5.70 | 5.85 | 5.78 | 5.85 | 142,270 |   |  
            | 7/23/2018 | -0.14 / -2.33% | 5.92 | 6.20 | 5.86 | 5.86 | 5.98 | 5.86 | 307,560 |   |  			
            | 7/20/2018 | -0.02 / -0.33% | 5.90 | 6.00 | 5.85 | 6.00 | 5.90 | 6.00 | 374,490 |   |  
            | 7/19/2018 | -0.20 / -3.22% | 6.25 | 6.25 | 6.02 | 6.02 | 6.11 | 6.02 | 228,060 |   |  			
            | 7/18/2018 | 0.00 / 0.00% | 6.38 | 6.38 | 6.10 | 6.22 | 6.22 | 6.22 | 305,750 |   |  
            | 7/17/2018 | +0.03 / +0.48% | 6.30 | 6.46 | 6.22 | 6.22 | 6.31 | 6.22 | 380,180 |   |  			
            | 7/16/2018 | +0.14 / +2.31% | 6.18 | 6.22 | 6.07 | 6.19 | 6.19 | 6.19 | 234,870 |   |  
            | 7/13/2018 | +0.09 / +1.51% | 5.92 | 6.19 | 5.92 | 6.05 | 6.01 | 6.05 | 348,430 |   |  			
            | 7/12/2018 | -0.03 / -0.50% | 6.02 | 6.03 | 5.91 | 5.96 | 5.95 | 5.96 | 330,320 |   |  
            | 7/11/2018 | +0.01 / +0.17% | 5.94 | 5.99 | 5.84 | 5.99 | 5.94 | 5.99 | 220,800 |   |  |