- 
        Signature
      
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        /s/ Mario G. Tabraue
      
      
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        Stock symbol
      
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        ETST
      
      
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        Transactions as of
      
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        Jun 27, 2024
      
      
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        Transactions value $
      
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        $4,600
      
      
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        Form type
      
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        4
      
      
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        Date filed
      
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        6/27/2024, 05:51 PM
      
 
     
   
 
  
    Transactions Table
  
  
    
      
        
          | Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes | 
      
      
          
            | transaction | ETST | Common Stock | Purchase | $4.6K | +20K | +0.16% | $0.23 | 12.3M | Jun 27, 2024 | Direct |  | 
      
    
   
  
    * An asterisk sign (*) next to the price indicates that the price is likely invalid.
  
  
    Remarks:
  
  All purchases were made on the open market.