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                    Closing price on 6/16/2021
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        |           
                
                    | Open | 2.40 |  
                    | High | 2.40 |  
                    | Low | 2.30 |  
                    | Volume | 23,700 |  
                    | Split-adjusted Price | 2.40 |  
                
             | 
 |  SDP Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/16/2021 | +0.10 / +4.35% | 2.40 | 2.40 | 2.30 | 2.40 | 2.30 | 2.40 | 23,700 |   |  
            | 6/15/2021 | 0.00 / 0.00% | 2.30 | 2.40 | 2.30 | 2.40 | 2.30 | 2.40 | 130,600 |   |  			
            | 6/14/2021 | 0.00 / 0.00% | 2.30 | 2.40 | 2.30 | 2.40 | 2.40 | 2.40 | 52,700 |   |  
            | 6/11/2021 | +0.10 / +4.17% | 2.40 | 2.50 | 2.30 | 2.50 | 2.40 | 2.50 | 102,200 |   |  			
            | 6/10/2021 | 0.00 / 0.00% | 2.50 | 2.50 | 2.30 | 2.40 | 2.40 | 2.40 | 136,200 |   |  
            | 6/9/2021 | 0.00 / 0.00% | 2.50 | 2.50 | 2.30 | 2.50 | 2.40 | 2.50 | 127,000 |   |  			
            | 6/8/2021 | +0.10 / +4.17% | 2.50 | 2.60 | 2.40 | 2.50 | 2.50 | 2.50 | 237,600 |   |  
            | 6/7/2021 | 0.00 / 0.00% | 2.50 | 2.50 | 2.40 | 2.50 | 2.41 | 2.50 | 143,200 |   |  			
            | 6/4/2021 | -0.10 / -3.85% | 2.70 | 2.80 | 2.30 | 2.50 | 2.50 | 2.50 | 381,300 |   |  
            | 6/3/2021 | +0.30 / +12.50% | 2.50 | 2.70 | 2.40 | 2.70 | 2.60 | 2.70 | 265,000 |   |  			
            | 6/2/2021 | +0.20 / +8.70% | 2.30 | 2.50 | 2.30 | 2.50 | 2.40 | 2.50 | 87,200 |   |  
            | 6/1/2021 | +0.20 / +9.09% | 2.30 | 2.40 | 2.20 | 2.40 | 2.30 | 2.40 | 116,000 |   |  			
            | 5/31/2021 | 0.00 / 0.00% | 2.40 | 2.40 | 2.20 | 2.30 | 2.20 | 2.30 | 50,800 |   |  
            | 5/28/2021 | +0.10 / +4.35% | 2.30 | 2.40 | 2.20 | 2.40 | 2.30 | 2.40 | 55,400 |   |  			
            | 5/27/2021 | +0.20 / +9.09% | 2.20 | 2.40 | 2.20 | 2.40 | 2.30 | 2.40 | 68,200 |   |  
            | 5/26/2021 | -0.10 / -4.35% | 2.40 | 2.40 | 2.20 | 2.20 | 2.20 | 2.20 | 110,200 |   |  			
            | 5/25/2021 | +0.10 / +4.35% | 2.40 | 2.40 | 2.30 | 2.40 | 2.30 | 2.40 | 9,100 |   |  
            | 5/24/2021 | -0.20 / -8.00% | 2.40 | 2.50 | 2.30 | 2.30 | 2.30 | 2.30 | 259,100 |   |  			
            | 5/21/2021 | +0.10 / +4.17% | 2.40 | 2.60 | 2.40 | 2.50 | 2.50 | 2.50 | 40,900 |   |  
            | 5/20/2021 | -0.30 / -11.11% | 2.50 | 2.60 | 2.40 | 2.40 | 2.40 | 2.40 | 56,900 |   |  			
            | 5/19/2021 | 0.00 / 0.00% | 2.70 | 2.80 | 2.60 | 2.60 | 2.65 | 2.60 | 180,200 |   |  
            | 5/18/2021 | +0.30 / +13.04% | 2.40 | 2.60 | 2.40 | 2.60 | 2.57 | 2.60 | 207,500 |   |  			
            | 5/17/2021 | +0.20 / +9.09% | 2.20 | 2.40 | 2.10 | 2.40 | 2.33 | 2.40 | 38,700 |   |  
            | 5/14/2021 | -0.10 / -4.17% | 2.30 | 2.30 | 2.10 | 2.30 | 2.23 | 2.30 | 165,200 |   |  			
            | 5/13/2021 | 0.00 / 0.00% | 2.40 | 2.50 | 2.30 | 2.40 | 2.38 | 2.40 | 30,900 |   |  
            | 5/12/2021 | 0.00 / 0.00% | 2.40 | 2.50 | 2.30 | 2.40 | 2.42 | 2.40 | 46,700 |   |  			
            | 5/11/2021 | +0.20 / +8.70% | 2.30 | 2.50 | 2.20 | 2.50 | 2.39 | 2.50 | 63,100 |   |  
            | 5/10/2021 | 0.00 / 0.00% | 2.30 | 2.40 | 2.20 | 2.30 | 2.30 | 2.30 | 74,800 |   |  			
            | 5/7/2021 | -0.20 / -8.00% | 2.50 | 2.60 | 2.30 | 2.30 | 2.35 | 2.30 | 101,700 |   |  
            | 5/6/2021 | -0.20 / -7.41% | 2.70 | 2.70 | 2.40 | 2.50 | 2.49 | 2.50 | 255,800 |   |  |