- 
        Signature
      
 
      - 
        /s/ Sara Ponessa, as attorney-in-fact
      
 
    
    
      
- 
        Stock symbol
      
 
      - 
        ALTM
      
 
    
    
      
- 
        Transactions as of
      
 
      - 
        Mar 7, 2024
      
 
    
    
      
- 
        Transactions value $
      
 
      - 
        $0
      
 
    
    
      
- 
        Form type
      
 
      - 
        4
      
 
    
    
      
- 
        Date filed
      
 
      - 
        3/11/2024, 05:05 PM
      
 
    
    
    
    
   
     
   
 
  
    Transactions Table
  
  
    
      
        
          | Type | 
          Sym | 
          Class | 
          Transaction | 
          Value $ | 
          Shares | 
          Change % | 
          * Price $ | 
          Shares After | 
          Date | 
          Ownership | 
          Footnotes | 
        
      
      
          
            | transaction | 
            ALTM | 
            Ordinary Shares | 
            Award | 
             | 
            +14.8K | 
            +19.49% | 
             | 
            90.7K | 
            Mar 7, 2024 | 
            Direct | 
            F1 | 
          
      
    
   
  
    * An asterisk sign (*) next to the price indicates that the price is likely invalid.
  
  Robert C. Pallash is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.
  
    Explanation of Responses: