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            | 
                    Closing price on 5/22/2018
                 |  |  
    
        |           
                
                    | Open | 6.15 |  
                    | High | 6.29 |  
                    | Low | 5.87 |  
                    | Volume | 195,660 |  
                    | Split-adjusted Price | 6.10 |  
                
             | 
 |  QBS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 5/22/2018 | -0.20 / -3.17% | 6.15 | 6.29 | 5.87 | 6.10 | 6.06 | 6.10 | 195,660 |   |  
            | 5/21/2018 | 0.00 / 0.00% | 6.30 | 6.34 | 6.22 | 6.30 | 6.30 | 6.30 | 293,120 |   |  			
            | 5/18/2018 | 0.00 / 0.00% | 6.15 | 6.35 | 6.02 | 6.30 | 6.25 | 6.30 | 267,090 |   |  
            | 5/17/2018 | +0.38 / +6.42% | 5.85 | 6.33 | 5.85 | 6.30 | 6.25 | 6.30 | 513,740 |   |  			
            | 5/16/2018 | +0.07 / +1.20% | 5.80 | 6.00 | 5.72 | 5.92 | 5.88 | 5.92 | 343,700 |   |  
            | 5/15/2018 | +0.27 / +4.84% | 5.60 | 5.97 | 5.60 | 5.85 | 5.83 | 5.85 | 103,250 |   |  			
            | 5/14/2018 | +0.02 / +0.36% | 5.75 | 5.75 | 5.50 | 5.58 | 5.58 | 5.58 | 85,470 |   |  
            | 5/11/2018 | 0.00 / 0.00% | 5.32 | 5.58 | 5.32 | 5.56 | 5.52 | 5.56 | 72,470 |   |  			
            | 5/10/2018 | 0.00 / 0.00% | 5.58 | 5.59 | 5.50 | 5.56 | 5.57 | 5.56 | 174,610 |   |  
            | 5/9/2018 | -0.02 / -0.36% | 5.32 | 5.60 | 5.32 | 5.56 | 5.47 | 5.56 | 200,950 |   |  			
            | 5/8/2018 | +0.03 / +0.54% | 5.60 | 5.60 | 5.20 | 5.58 | 5.35 | 5.58 | 121,590 |   |  
            | 5/7/2018 | +0.15 / +2.78% | 5.59 | 5.59 | 5.16 | 5.55 | 5.40 | 5.55 | 18,530 |   |  			
            | 5/4/2018 | +0.04 / +0.75% | 5.36 | 5.65 | 5.24 | 5.40 | 5.29 | 5.40 | 52,170 |   |  
            | 5/3/2018 | -0.39 / -6.78% | 5.74 | 5.74 | 5.36 | 5.36 | 5.50 | 5.36 | 266,250 |   |  			
            | 5/2/2018 | +0.05 / +0.88% | 5.50 | 5.75 | 5.47 | 5.75 | 5.62 | 5.75 | 222,410 |   |  
            | 4/27/2018 | +0.26 / +4.78% | 5.30 | 5.79 | 5.10 | 5.70 | 5.45 | 5.70 | 260,530 |   |  			
            | 4/26/2018 | -0.23 / -4.06% | 5.67 | 5.67 | 5.28 | 5.44 | 5.44 | 5.44 | 170,310 |   |  
            | 4/24/2018 | -0.20 / -3.41% | 5.70 | 5.70 | 5.46 | 5.67 | 5.56 | 5.67 | 76,230 |   |  			
            | 4/23/2018 | -0.03 / -0.51% | 5.90 | 5.98 | 5.60 | 5.87 | 5.83 | 5.87 | 149,830 |   |  
            | 4/20/2018 | -0.10 / -1.67% | 6.00 | 6.00 | 5.80 | 5.90 | 5.94 | 5.90 | 11,950 |   |  			
            | 4/19/2018 | -0.08 / -1.32% | 6.08 | 6.08 | 5.80 | 6.00 | 5.92 | 6.00 | 49,140 |   |  
            | 4/18/2018 | +0.08 / +1.33% | 6.15 | 6.15 | 5.95 | 6.08 | 6.00 | 6.08 | 125,580 |   |  			
            | 4/17/2018 | +0.03 / +0.50% | 6.09 | 6.09 | 5.95 | 6.00 | 6.01 | 6.00 | 39,590 |   |  
            | 4/16/2018 | -0.12 / -1.97% | 5.90 | 5.98 | 5.81 | 5.97 | 5.94 | 5.97 | 186,990 |   |  			
            | 4/13/2018 | +0.19 / +3.22% | 5.90 | 6.13 | 5.80 | 6.09 | 5.93 | 6.09 | 62,920 |   |  
            | 4/12/2018 | 0.00 / 0.00% | 6.20 | 6.20 | 5.75 | 5.90 | 5.87 | 5.90 | 19,590 |   |  			
            | 4/11/2018 | -0.25 / -4.07% | 6.00 | 6.10 | 5.90 | 5.90 | 5.94 | 5.90 | 73,190 |   |  
            | 4/10/2018 | -0.05 / -0.81% | 6.19 | 6.28 | 5.95 | 6.15 | 6.13 | 6.15 | 135,030 |   |  			
            | 4/9/2018 | -0.10 / -1.59% | 6.49 | 6.49 | 6.20 | 6.20 | 6.30 | 6.20 | 198,570 |   |  
            | 4/6/2018 | +0.24 / +3.96% | 6.10 | 6.46 | 6.10 | 6.30 | 6.31 | 6.30 | 249,270 |   |  |