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                    Closing price on 5/17/2019
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        |           
                
                    | Open | 3.01 |  
                    | High | 3.03 |  
                    | Low | 2.99 |  
                    | Volume | 89,010 |  
                    | Split-adjusted Price | 3.01 |  
                
             | 
 |  QBS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 5/17/2019 | -0.04 / -1.31% | 3.01 | 3.03 | 2.99 | 3.01 | 3.00 | 3.01 | 89,010 |   |  
            | 5/16/2019 | +0.03 / +0.99% | 3.02 | 3.14 | 3.02 | 3.05 | 3.08 | 3.05 | 156,300 |   |  			
            | 5/15/2019 | +0.02 / +0.67% | 3.04 | 3.06 | 3.00 | 3.02 | 3.02 | 3.02 | 253,900 |   |  
            | 5/14/2019 | +0.05 / +1.69% | 2.83 | 3.00 | 2.81 | 3.00 | 2.89 | 3.00 | 213,740 |   |  			
            | 5/13/2019 | -0.20 / -6.35% | 3.12 | 3.12 | 2.95 | 2.95 | 3.02 | 2.95 | 276,200 |   |  
            | 5/10/2019 | 0.00 / 0.00% | 3.16 | 3.16 | 3.05 | 3.15 | 3.14 | 3.15 | 175,070 |   |  			
            | 5/9/2019 | -0.01 / -0.32% | 3.10 | 3.20 | 3.01 | 3.15 | 3.06 | 3.15 | 308,230 |   |  
            | 5/8/2019 | -0.23 / -6.78% | 3.32 | 3.35 | 3.16 | 3.16 | 3.18 | 3.16 | 495,790 |   |  			
            | 5/7/2019 | -0.04 / -1.17% | 3.35 | 3.47 | 3.31 | 3.39 | 3.37 | 3.39 | 194,700 |   |  
            | 5/6/2019 | -0.14 / -3.92% | 3.54 | 3.57 | 3.40 | 3.43 | 3.48 | 3.43 | 155,250 |   |  			
            | 5/3/2019 | -0.13 / -3.51% | 3.70 | 3.70 | 3.57 | 3.57 | 3.62 | 3.57 | 224,290 |   |  
            | 5/2/2019 | -0.03 / -0.80% | 3.73 | 3.73 | 3.60 | 3.70 | 3.68 | 3.70 | 261,920 |   |  			
            | 4/26/2019 | -0.02 / -0.53% | 3.78 | 3.78 | 3.70 | 3.73 | 3.74 | 3.73 | 98,620 |   |  
            | 4/25/2019 | +0.05 / +1.35% | 3.74 | 3.81 | 3.64 | 3.75 | 3.72 | 3.75 | 398,850 |   |  			
            | 4/24/2019 | +0.10 / +2.78% | 3.60 | 3.70 | 3.60 | 3.70 | 3.62 | 3.70 | 158,920 |   |  
            | 4/23/2019 | 0.00 / 0.00% | 3.70 | 3.70 | 3.57 | 3.60 | 3.62 | 3.60 | 237,500 |   |  			
            | 4/22/2019 | -0.16 / -4.26% | 3.72 | 3.74 | 3.60 | 3.60 | 3.67 | 3.60 | 109,760 |   |  
            | 4/19/2019 | +0.05 / +1.35% | 3.75 | 3.82 | 3.66 | 3.76 | 3.76 | 3.76 | 209,230 |   |  			
            | 4/18/2019 | -0.15 / -3.89% | 3.82 | 3.85 | 3.70 | 3.71 | 3.72 | 3.71 | 42,510 |   |  
            | 4/17/2019 | -0.16 / -3.98% | 3.99 | 3.99 | 3.82 | 3.86 | 3.93 | 3.86 | 14,490 |   |  			
            | 4/16/2019 | +0.07 / +1.77% | 3.90 | 4.02 | 3.90 | 4.02 | 3.96 | 4.02 | 43,430 |   |  
            | 4/12/2019 | +0.25 / +6.76% | 3.70 | 3.95 | 3.67 | 3.95 | 3.80 | 3.95 | 81,240 |   |  			
            | 4/11/2019 | -0.09 / -2.37% | 3.83 | 3.83 | 3.67 | 3.70 | 3.70 | 3.70 | 155,050 |   |  
            | 4/10/2019 | -0.01 / -0.26% | 3.80 | 3.80 | 3.71 | 3.79 | 3.77 | 3.79 | 64,700 |   |  			
            | 4/9/2019 | -0.15 / -3.80% | 3.85 | 3.95 | 3.80 | 3.80 | 3.82 | 3.80 | 130,490 |   |  
            | 4/8/2019 | -0.05 / -1.25% | 4.05 | 4.05 | 3.74 | 3.95 | 3.95 | 3.95 | 235,630 |   |  			
            | 4/5/2019 | -0.02 / -0.50% | 4.04 | 4.05 | 3.98 | 4.00 | 4.01 | 4.00 | 31,200 |   |  
            | 4/4/2019 | -0.08 / -1.95% | 4.00 | 4.05 | 3.97 | 4.02 | 4.01 | 4.02 | 174,650 |   |  			
            | 4/3/2019 | +0.05 / +1.23% | 4.05 | 4.10 | 4.05 | 4.10 | 4.07 | 4.10 | 23,320 |   |  
            | 4/2/2019 | +0.04 / +1.00% | 4.03 | 4.06 | 4.01 | 4.05 | 4.06 | 4.05 | 34,740 |   |  |