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                    Closing price on 3/17/2021
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        |           
                
                    | Open | 3.01 |  
                    | High | 3.01 |  
                    | Low | 2.92 |  
                    | Volume | 90,100 |  
                    | Split-adjusted Price | 2.98 |  
                
             | 
 |  QBS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/17/2021 | -0.01 / -0.33% | 3.01 | 3.01 | 2.92 | 2.98 | 2.99 | 2.98 | 90,100 |   |  
            | 3/16/2021 | +0.03 / +1.01% | 2.92 | 3.08 | 2.89 | 2.99 | 2.95 | 2.99 | 334,000 |   |  			
            | 3/15/2021 | -0.14 / -4.52% | 2.92 | 3.00 | 2.89 | 2.96 | 2.96 | 2.96 | 267,800 |   |  
            | 3/12/2021 | -0.04 / -1.27% | 3.14 | 3.14 | 3.02 | 3.10 | 3.05 | 3.10 | 258,900 |   |  			
            | 3/11/2021 | +0.01 / +0.32% | 3.10 | 3.24 | 3.05 | 3.14 | 3.13 | 3.14 | 242,000 |   |  
            | 3/10/2021 | +0.18 / +6.10% | 2.95 | 3.15 | 2.95 | 3.13 | 3.10 | 3.13 | 690,400 |   |  			
            | 3/9/2021 | 0.00 / 0.00% | 2.97 | 2.97 | 2.86 | 2.95 | 2.90 | 2.95 | 396,600 |   |  
            | 3/8/2021 | +0.05 / +1.72% | 2.90 | 2.95 | 2.88 | 2.95 | 2.91 | 2.95 | 349,800 |   |  			
            | 3/5/2021 | -0.15 / -4.92% | 3.05 | 3.05 | 2.86 | 2.90 | 2.95 | 2.90 | 473,900 |   |  
            | 3/4/2021 | +0.19 / +6.64% | 3.06 | 3.06 | 2.80 | 3.05 | 3.00 | 3.05 | 863,900 |   |  			
            | 3/3/2021 | +0.18 / +6.72% | 2.86 | 2.86 | 2.76 | 2.86 | 2.86 | 2.86 | 677,100 |   |  
            | 3/2/2021 | +0.17 / +6.77% | 2.68 | 2.68 | 2.67 | 2.68 | 2.68 | 2.68 | 333,500 |   |  			
            | 3/1/2021 | +0.16 / +6.81% | 2.39 | 2.51 | 2.39 | 2.51 | 2.49 | 2.51 | 489,600 |   |  
            | 2/26/2021 | +0.02 / +0.86% | 2.33 | 2.37 | 2.32 | 2.35 | 2.33 | 2.35 | 87,200 |   |  			
            | 2/25/2021 | +0.03 / +1.30% | 2.37 | 2.37 | 2.31 | 2.33 | 2.33 | 2.33 | 78,700 |   |  
            | 2/24/2021 | -0.07 / -2.95% | 2.37 | 2.38 | 2.30 | 2.30 | 2.34 | 2.30 | 66,100 |   |  			
            | 2/23/2021 | +0.01 / +0.42% | 2.36 | 2.37 | 2.32 | 2.37 | 2.36 | 2.37 | 54,300 |   |  
            | 2/22/2021 | 0.00 / 0.00% | 2.36 | 2.42 | 2.36 | 2.36 | 2.37 | 2.36 | 114,900 |   |  			
            | 2/19/2021 | +0.04 / +1.72% | 2.33 | 2.40 | 2.33 | 2.36 | 2.37 | 2.36 | 160,900 |   |  
            | 2/18/2021 | +0.02 / +0.87% | 2.33 | 2.33 | 2.26 | 2.32 | 2.30 | 2.32 | 209,100 |   |  			
            | 2/17/2021 | +0.01 / +0.44% | 2.29 | 2.38 | 2.25 | 2.30 | 2.31 | 2.30 | 93,500 |   |  
            | 2/9/2021 | +0.03 / +1.33% | 2.29 | 2.29 | 2.18 | 2.29 | 2.26 | 2.29 | 26,900 |   |  			
            | 2/8/2021 | -0.01 / -0.44% | 2.28 | 2.28 | 2.19 | 2.26 | 2.23 | 2.26 | 89,000 |   |  
            | 2/5/2021 | +0.04 / +1.79% | 2.30 | 2.30 | 2.21 | 2.27 | 2.24 | 2.27 | 78,100 |   |  			
            | 2/4/2021 | -0.05 / -2.19% | 2.28 | 2.32 | 2.23 | 2.23 | 2.30 | 2.23 | 56,300 |   |  
            | 2/3/2021 | +0.11 / +5.07% | 2.17 | 2.29 | 2.17 | 2.28 | 2.24 | 2.28 | 149,800 |   |  			
            | 2/2/2021 | -0.03 / -1.36% | 2.20 | 2.20 | 2.08 | 2.17 | 2.11 | 2.17 | 34,700 |   |  
            | 2/1/2021 | -0.08 / -3.51% | 2.16 | 2.28 | 2.13 | 2.20 | 2.16 | 2.20 | 313,900 |   |  			
            | 1/29/2021 | -0.05 / -2.15% | 2.17 | 2.32 | 2.17 | 2.28 | 2.20 | 2.28 | 241,500 |   |  
            | 1/28/2021 | -0.17 / -6.80% | 2.33 | 2.35 | 2.33 | 2.33 | 2.33 | 2.33 | 159,600 |   |  |