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        Signature
      
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        /s/ Michelle Webb, Attorney-in-Fact
      
      
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        Stock symbol
      
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        ACVA
      
      
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        Transactions as of
      
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        Sep 16, 2024
      
      
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        Transactions value $
      
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        -$1,306,920
      
      
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        Form type
      
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        4
      
      
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        Date filed
      
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        9/18/2024, 05:24 PM
      
 
     
   
 
  
    Transactions Table
  
  
    
      
        
          | Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes | 
      
      
          
            | transaction | ACVA | Class A Common Stock | Options Exercise |  | +69.4K | +13.79% |  | 572K | Sep 17, 2024 | Direct | F1 | 
          
            | transaction | ACVA | Class A Common Stock | Conversion of derivative security |  | +7.5K | +1.31% |  | 580K | Sep 17, 2024 | Direct | F1 | 
          
            | transaction | ACVA | Class A Common Stock | Sale | -$1.56M | -76.9K | -13.25% | $20.26 | 503K | Sep 17, 2024 | Direct | F2, F3 | 
          
            | transaction | ACVA | Class A Common Stock | Options Exercise |  | +5.64K | +1.12% |  | 509K | Sep 18, 2024 | Direct | F1 | 
          
            | transaction | ACVA | Class A Common Stock | Sale | -$115K | -5.64K | -1.11% | $20.45 | 503K | Sep 18, 2024 | Direct | F2, F4 | 
      
    
   
  
    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 | ACVA | Class B Common Stock | Tax liability | -$40.9K | -2.05K | -0.59% | $19.95 | 345K | Sep 16, 2024 | Class A Common Stock | 2.05K |  | Direct | F1, F5, F6 | 
          
            | transaction | ACVA | Employee Stock Option (Right to Buy) | Options Exercise | $0 | -69.4K | -46.24% | $0.00 | 80.6K | Sep 17, 2024 | Class B Common Stock | 69.4K | $5.42 | Direct | F7 | 
          
            | transaction | ACVA | Class B Common Stock | Options Exercise | $376K | +69.4K | +20.09% | $5.42 | 415K | Sep 17, 2024 | Class A Common Stock | 69.4K |  | Direct | F1, F6 | 
          
            | transaction | ACVA | Class B Common Stock | Conversion of derivative security | $0 | -69.4K | -16.73% | $0.00 | 345K | Sep 17, 2024 | Class A Common Stock | 69.4K |  | Direct | F1, F6 | 
          
            | transaction | ACVA | Class B Common Stock | Conversion of derivative security | $0 | -7.5K | -2.17% | $0.00 | 338K | Sep 17, 2024 | Class A Common Stock | 7.5K |  | Direct | F1, F6 | 
          
            | transaction | ACVA | Employee Stock Option (Right to Buy) | Options Exercise | $0 | -5.64K | -7% | $0.00 | 75K | Sep 18, 2024 | Class B Common Stock | 5.64K | $5.42 | Direct | F7 | 
          
            | transaction | ACVA | Class B Common Stock | Options Exercise | $30.6K | +5.64K | +1.67% | $5.42 | 343K | Sep 18, 2024 | Class A Common Stock | 5.64K |  | Direct | F1, F6 | 
          
            | transaction | ACVA | Class B Common Stock | Conversion of derivative security | $0 | -5.64K | -1.64% | $0.00 | 338K | Sep 18, 2024 | Class A Common Stock | 5.64K |  | Direct | F1, F6 | 
      
    
   
  
    * 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: