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            | 
                    Closing price on 12/23/2020
                 |  |  
    
        |           
                
                    | Open | 1.00 |  
                    | High | 1.10 |  
                    | Low | 0.90 |  
                    | Volume | 1,912,900 |  
                    | Split-adjusted Price | 1.00 |  
                
             | 
 |  ACM Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 12/23/2020 | 0.00 / 0.00% | 1.00 | 1.10 | 0.90 | 1.00 | 1.02 | 1.00 | 1,912,900 |   |  
            | 12/22/2020 | -0.10 / -9.09% | 1.10 | 1.10 | 1.00 | 1.00 | 1.01 | 1.00 | 1,645,000 |   |  			
            | 12/21/2020 | +0.10 / +10.00% | 1.10 | 1.10 | 1.00 | 1.10 | 1.10 | 1.10 | 3,228,200 |   |  
            | 12/18/2020 | +0.10 / +11.11% | 0.90 | 1.00 | 0.90 | 1.00 | 0.97 | 1.00 | 2,820,400 |   |  			
            | 12/17/2020 | 0.00 / 0.00% | 0.90 | 1.00 | 0.80 | 0.90 | 0.90 | 0.90 | 2,994,300 |   |  
            | 12/16/2020 | +0.10 / +12.50% | 0.90 | 0.90 | 0.80 | 0.90 | 0.90 | 0.90 | 567,300 |   |  			
            | 12/15/2020 | 0.00 / 0.00% | 0.80 | 0.90 | 0.80 | 0.80 | 0.81 | 0.80 | 347,900 |   |  
            | 12/14/2020 | 0.00 / 0.00% | 0.80 | 0.90 | 0.70 | 0.80 | 0.80 | 0.80 | 669,500 |   |  			
            | 12/11/2020 | +0.10 / +14.29% | 0.70 | 0.80 | 0.70 | 0.80 | 0.76 | 0.80 | 255,100 |   |  
            | 12/10/2020 | -0.10 / -12.50% | 0.90 | 0.90 | 0.70 | 0.70 | 0.78 | 0.70 | 456,900 |   |  			
            | 12/9/2020 | +0.10 / +14.29% | 0.80 | 0.80 | 0.70 | 0.80 | 0.80 | 0.80 | 613,400 |   |  
            | 12/8/2020 | -0.10 / -12.50% | 0.70 | 0.80 | 0.70 | 0.70 | 0.71 | 0.70 | 217,800 |   |  			
            | 12/7/2020 | 0.00 / 0.00% | 0.70 | 0.80 | 0.70 | 0.80 | 0.76 | 0.80 | 149,200 |   |  
            | 12/4/2020 | 0.00 / 0.00% | 0.80 | 0.80 | 0.70 | 0.80 | 0.75 | 0.80 | 55,500 |   |  			
            | 12/3/2020 | 0.00 / 0.00% | 0.80 | 0.80 | 0.70 | 0.80 | 0.79 | 0.80 | 555,400 |   |  
            | 12/2/2020 | 0.00 / 0.00% | 0.70 | 0.80 | 0.70 | 0.80 | 0.80 | 0.80 | 357,200 |   |  			
            | 12/1/2020 | 0.00 / 0.00% | 0.80 | 0.80 | 0.70 | 0.80 | 0.79 | 0.80 | 209,400 |   |  
            | 11/30/2020 | 0.00 / 0.00% | 0.80 | 0.80 | 0.70 | 0.80 | 0.80 | 0.80 | 270,500 |   |  			
            | 11/27/2020 | +0.10 / +14.29% | 0.80 | 0.80 | 0.70 | 0.80 | 0.80 | 0.80 | 150,600 |   |  
            | 11/26/2020 | -0.10 / -12.50% | 0.80 | 0.90 | 0.70 | 0.70 | 0.74 | 0.70 | 655,500 |   |  			
            | 11/25/2020 | 0.00 / 0.00% | 0.90 | 0.90 | 0.70 | 0.80 | 0.80 | 0.80 | 485,200 |   |  
            | 11/24/2020 | -0.10 / -11.11% | 0.90 | 0.90 | 0.80 | 0.80 | 0.80 | 0.80 | 312,100 |   |  			
            | 11/23/2020 | +0.10 / +12.50% | 0.90 | 0.90 | 0.80 | 0.90 | 0.81 | 0.90 | 167,700 |   |  
            | 11/20/2020 | 0.00 / 0.00% | 0.80 | 0.90 | 0.70 | 0.80 | 0.85 | 0.80 | 444,400 |   |  			
            | 11/19/2020 | -0.10 / -11.11% | 0.90 | 0.90 | 0.80 | 0.80 | 0.80 | 0.80 | 435,900 |   |  
            | 11/18/2020 | +0.10 / +12.50% | 0.90 | 0.90 | 0.70 | 0.90 | 0.83 | 0.90 | 207,700 |   |  			
            | 11/17/2020 | 0.00 / 0.00% | 0.80 | 0.90 | 0.80 | 0.80 | 0.80 | 0.80 | 318,200 |   |  
            | 11/16/2020 | 0.00 / 0.00% | 0.70 | 0.90 | 0.70 | 0.80 | 0.80 | 0.80 | 637,400 |   |  			
            | 11/13/2020 | 0.00 / 0.00% | 0.70 | 0.90 | 0.70 | 0.80 | 0.80 | 0.80 | 316,100 |   |  
            | 11/12/2020 | 0.00 / 0.00% | 0.80 | 0.90 | 0.70 | 0.80 | 0.79 | 0.80 | 499,100 |   |  |