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            | 
                    Closing price on 11/26/2021
                 |  |  
    
        |           
                
                    | Open | 3.90 |  
                    | High | 4.00 |  
                    | Low | 3.40 |  
                    | Volume | 5,464,400 |  
                    | Split-adjusted Price | 3.40 |  
                
             | 
 |  ACM Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 11/26/2021 | -0.30 / -8.11% | 3.90 | 4.00 | 3.40 | 3.40 | 3.61 | 3.40 | 5,464,400 |   |  
            | 11/25/2021 | 0.00 / 0.00% | 3.70 | 3.70 | 3.70 | 3.70 | 3.70 | 3.70 | 0 |   |  			
            | 11/24/2021 | 0.00 / 0.00% | 3.70 | 3.70 | 3.70 | 3.70 | 3.70 | 3.70 | 0 |   |  
            | 11/23/2021 | 0.00 / 0.00% | 3.70 | 3.70 | 3.70 | 3.70 | 3.70 | 3.70 | 0 |   |  			
            | 11/22/2021 | 0.00 / 0.00% | 3.70 | 3.70 | 3.70 | 3.70 | 3.70 | 3.70 | 0 |   |  
            | 11/19/2021 | +0.30 / +8.82% | 3.60 | 3.70 | 3.40 | 3.70 | 3.66 | 3.70 | 11,583,400 |   |  			
            | 11/18/2021 | 0.00 / 0.00% | 3.40 | 3.40 | 3.40 | 3.40 | 3.40 | 3.40 | 0 |   |  
            | 11/17/2021 | 0.00 / 0.00% | 3.40 | 3.40 | 3.40 | 3.40 | 3.40 | 3.40 | 0 |   |  			
            | 11/16/2021 | 0.00 / 0.00% | 3.40 | 3.40 | 3.40 | 3.40 | 3.40 | 3.40 | 0 |   |  
            | 11/15/2021 | 0.00 / 0.00% | 3.40 | 3.40 | 3.40 | 3.40 | 3.40 | 3.40 | 0 |   |  			
            | 11/12/2021 | 0.00 / 0.00% | 3.40 | 3.50 | 3.20 | 3.40 | 3.35 | 3.40 | 8,916,900 |   |  
            | 11/11/2021 | 0.00 / 0.00% | 3.40 | 3.40 | 3.40 | 3.40 | 3.40 | 3.40 | 0 |   |  			
            | 11/10/2021 | 0.00 / 0.00% | 3.40 | 3.40 | 3.40 | 3.40 | 3.40 | 3.40 | 0 |   |  
            | 11/9/2021 | 0.00 / 0.00% | 3.40 | 3.40 | 3.40 | 3.40 | 3.40 | 3.40 | 0 |   |  			
            | 11/8/2021 | 0.00 / 0.00% | 3.40 | 3.40 | 3.40 | 3.40 | 3.40 | 3.40 | 0 |   |  
            | 11/5/2021 | -0.20 / -5.56% | 3.30 | 3.60 | 3.30 | 3.40 | 3.36 | 3.40 | 12,988,520 |   |  			
            | 11/4/2021 | 0.00 / 0.00% | 3.60 | 3.60 | 3.60 | 3.60 | 3.60 | 3.60 | 0 |   |  
            | 11/3/2021 | 0.00 / 0.00% | 3.60 | 3.60 | 3.60 | 3.60 | 3.60 | 3.60 | 0 |   |  			
            | 11/2/2021 | 0.00 / 0.00% | 3.60 | 3.60 | 3.60 | 3.60 | 3.60 | 3.60 | 0 |   |  
            | 11/1/2021 | 0.00 / 0.00% | 3.60 | 3.60 | 3.60 | 3.60 | 3.60 | 3.60 | 0 |   |  			
            | 10/29/2021 | -0.30 / -7.69% | 3.60 | 3.60 | 3.60 | 3.60 | 3.60 | 3.60 | 4,384,400 |   |  
            | 10/28/2021 | 0.00 / 0.00% | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 0 |   |  			
            | 10/27/2021 | 0.00 / 0.00% | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 3.90 | 0 |   |  
            | 10/26/2021 | -0.10 / -2.50% | 3.80 | 4.00 | 3.60 | 3.90 | 3.82 | 3.90 | 5,200,000 |   |  			
            | 10/25/2021 | +0.10 / +2.56% | 3.90 | 4.10 | 3.70 | 4.00 | 3.95 | 4.00 | 3,443,400 |   |  
            | 10/22/2021 | -0.30 / -7.14% | 4.20 | 4.20 | 3.90 | 3.90 | 4.03 | 3.90 | 3,068,700 |   |  			
            | 10/21/2021 | +0.20 / +5.00% | 4.10 | 4.40 | 4.00 | 4.20 | 4.17 | 4.20 | 3,061,500 |   |  
            | 10/20/2021 | +0.30 / +8.11% | 3.80 | 4.00 | 3.70 | 4.00 | 3.97 | 4.00 | 7,810,200 |   |  			
            | 10/19/2021 | 0.00 / 0.00% | 3.70 | 3.80 | 3.60 | 3.70 | 3.71 | 3.70 | 1,269,100 |   |  
            | 10/18/2021 | 0.00 / 0.00% | 3.70 | 3.80 | 3.60 | 3.70 | 3.72 | 3.70 | 2,367,900 |   |  |