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        Signature
      
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        By: Margaret Austin Wright For: Dennis H. Chookaszian
      
      
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        Stock symbol
      
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        CME
      
      
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        Transactions as of
      
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        Jun 25, 2021
      
      
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        Transactions value $
      
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        $120,184
      
      
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        Form type
      
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        4
      
      
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        Date filed
      
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        6/29/2021, 07:57 PM
      
 
     
   
 
  
    Transactions Table
  
  
    
      
        
          | Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes | 
      
      
          
            | transaction | CME | Common Stock Class A | Award | $120K | +551 | +19.57% | $218.12 | 3.37K | Jun 25, 2021 | Direct | F1 | 
          
            | holding | CME | Common Stock Class A |  |  |  |  |  | 12.9K | Jun 25, 2021 | by Spouse |  | 
      
    
   
  
    * An asterisk sign (*) next to the price indicates that the price is likely invalid.
  
  
    Explanation of Responses:
  
  
  
    Remarks:
  
  Exhibit List - Exhibit 24 Power of Attorney for Dennis H. Chookaszian