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        Signature
      
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        /s/ Craig Brown, as attorney-in-fact for Sachin Mehra, pursuant to a power of attorney dated July 14, 2025
      
      
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        Stock symbol
      
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        MA
      
      
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        Transactions as of
      
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        Aug 19, 2025
      
      
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        Transactions value $
      
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        -$6,197,101
      
      
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        Form type
      
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        4
      
      
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        Date filed
      
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        8/20/2025, 04:08 PM
      
 
     
   
 
  
    Reporting Owners (1)
  
  
    
      
        
          | Name | Relationship | Address | Signature | Signature date | CIK | 
      
      
          
            | SACHIN J. MEHRA | Chief Financial Officer | 2000 PURCHASE STREET, PURCHASE | /s/ Craig Brown, as attorney-in-fact for Sachin Mehra, pursuant to a power of attorney dated July 14, 2025 | 2025-08-20 | 0001427531 | 
      
    
   
  
    Transactions Table
  
  
    
      
        
          | Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes | 
      
      
          
            | transaction | MA | Class A Common Stock | Options Exercise | $4.26M | +17.8K | +57.04% | $239.05 | 49K | Aug 19, 2025 | Direct | F1 | 
          
            | transaction | MA | Class A Common Stock | Sale | -$2.57M | -4.4K | -8.97% | $584.93 | 44.6K | Aug 19, 2025 | Direct | F1, F2 | 
          
            | transaction | MA | Class A Common Stock | Sale | -$1.11M | -1.89K | -4.24% | $585.97 | 42.8K | Aug 19, 2025 | Direct | F1, F3 | 
          
            | transaction | MA | Class A Common Stock | Sale | -$2.94M | -5K | -11.7% | $587.04 | 37.8K | Aug 19, 2025 | Direct | F1, F4 | 
          
            | transaction | MA | Class A Common Stock | Sale | -$2.54M | -4.32K | -11.45% | $587.86 | 33.4K | Aug 19, 2025 | Direct | F1, F5 | 
          
            | transaction | MA | Class A Common Stock | Sale | -$825K | -1.4K | -4.19% | $588.94 | 32K | Aug 19, 2025 | Direct | F1, F6 | 
          
            | transaction | MA | Class A Common Stock | Sale | -$413K | -700 | -2.19% | $590.03 | 31.3K | Aug 19, 2025 | Direct | F1, F7 | 
          
            | transaction | MA | Class A Common Stock | Sale | -$59.1K | -100 | -0.32% | $590.53 | 31.2K | Aug 19, 2025 | Direct | F1 | 
      
    
   
  
    Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)
  
  
    
      
        
          | Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes | 
      
      
          
            | transaction | MA | Employee Stock Option (right to buy) | Options Exercise | $0 | -17.8K | -100% | $0.00 | 0 | Aug 19, 2025 | Class A Common Stock | 17.8K | $239.05 | Direct | F1, F8 | 
      
    
   
  
    * An asterisk sign (*) next to the price indicates that the price is likely invalid.
  
  Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.
  Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).
  
    Explanation of Responses: