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        Signature
      
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        /s/ Michael N. Taglich
      
      
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        Stock symbol
      
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        AIRI
      
      
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        Transactions as of
      
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        Jun 2, 2023
      
      
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        Transactions value $
      
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        $0
      
      
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        Form type
      
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        4
      
      
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        Date filed
      
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        6/6/2023, 04:29 PM
      
 
     
   
 
  
    Transactions Table
  
  
    
      
        
          | Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes | 
      
      
          
            | holding | AIRI | Common Stock |  |  |  |  |  | 416K | Jun 2, 2023 | Direct |  | 
          
            | holding | AIRI | Common Stock |  |  |  |  |  | 24K | Jun 2, 2023 | See Note | 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 | AIRI | Stock Options | Award | $0 | +10K |  | $0.00 | 10K | Jun 2, 2023 | Common Stock | 10K | $3.50 | Direct | F2 | 
          
            | holding | AIRI | Stock Options |  |  |  |  |  | 2.12K | Jun 2, 2023 | Common Stock | 2.12K | $3.43 | Direct | F3 | 
          
            | holding | AIRI | Convertible Notes |  |  |  |  |  | $1.52M | Jun 2, 2023 | Common Stock | 102K | $15.00 | Direct | F4, F5 | 
          
            | holding | AIRI | Convertible Notes |  |  |  |  |  | $1.03M | Jun 2, 2023 | Common Stock | 110K | $9.30 | Direct | F5 | 
          
            | holding | AIRI | Convertible Notes |  |  |  |  |  | $213K | Jun 2, 2023 | Common Stock | 14.2K | $15.00 | See Note | F5, F6 | 
          
            | holding | AIRI | Convertible Notes |  |  |  |  |  | $117K | Jun 2, 2023 | Common Stock | 7.81K | $15.00 | Direct | F5 | 
          
            | holding | AIRI | Convertible Notes |  |  |  |  |  | $28K | Jun 2, 2023 | Common Stock | 3.01K | $9.30 | See Note | F5, F7 | 
          
            | holding | AIRI | Warrants |  |  |  |  |  | 1.75K | Jun 2, 2023 | Common Stock | 1.75K | $14.00 | See Note | F8 | 
      
    
   
  
    * An asterisk sign (*) next to the price indicates that the price is likely invalid.
  
  
    Explanation of Responses: