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        Signature
      
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        /s/ Shannon Trevino, attorney-in-fact for Mitch C. Hill
      
      
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        Stock symbol
      
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        NARI
      
      
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        Transactions as of
      
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        May 13, 2024
      
      
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        Transactions value $
      
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        -$273,070
      
      
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        Form type
      
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        4
      
      
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        Date filed
      
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        5/15/2024, 04:39 PM
      
 
     
   
 
  
    Transactions Table
  
  
    
      
        
          | Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes | 
      
      
          
            | transaction | NARI | Common Stock | Options Exercise | $2.74K | +6K | +3.31% | $0.46* | 187K | May 13, 2024 | Direct | F1 | 
          
            | transaction | NARI | Common Stock | Sale | -$13.3K | -300 | -0.16% | $44.49 | 187K | May 13, 2024 | Direct | F1, F2 | 
          
            | transaction | NARI | Common Stock | Sale | -$160K | -3.5K | -1.87% | $45.73 | 183K | May 13, 2024 | Direct | F1, F3 | 
          
            | transaction | NARI | Common Stock | Sale | -$102K | -2.2K | -1.2% | $46.55 | 181K | May 13, 2024 | Direct | F1, F4 | 
          
            | holding | NARI | Common Stock |  |  |  |  |  | 1.6K | May 13, 2024 | By Spouse |  | 
      
    
   
  
    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 | NARI | Stock Options (Right to Buy) | Options Exercise | $0 | -6K | -7.27% | $0.00 | 76.5K | May 13, 2024 | Common Stock | 6K | $0.46 | Direct | F1, F5 | 
      
    
   
  
    * 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: