- 
        Signature
      
 
      - 
        /s/ Beth Hecht, as Attorney-in-Fact
      
 
    
    
      
- 
        Stock symbol
      
 
      - 
        XERS
      
 
    
    
      
- 
        Transactions as of
      
 
      - 
        Jan 31, 2024
      
 
    
    
      
- 
        Transactions value $
      
 
      - 
        $0
      
 
    
    
      
- 
        Form type
      
 
      - 
        4
      
 
    
    
      
- 
        Date filed
      
 
      - 
        1/31/2024, 05:04 PM
      
 
    
    
    
   
     
   
 
  
    Transactions Table
  
  
    
      
        
          | Type | 
          Sym | 
          Class | 
          Transaction | 
          Value $ | 
          Shares | 
          Change % | 
          * Price $ | 
          Shares After | 
          Date | 
          Ownership | 
          Footnotes | 
        
      
      
          
            | transaction | 
            XERS | 
            Common Stock | 
            Award | 
            $0 | 
            +1.5M | 
            +65.56% | 
            $0.00 | 
            3.79M | 
            Jan 31, 2024 | 
            Direct | 
            F1 | 
          
          
            | holding | 
            XERS | 
            Common Stock | 
             | 
             | 
             | 
             | 
             | 
            33.4K | 
            Jan 31, 2024 | 
            By: Paul R. Edick 2008 Revocable Trust u/d/t dated 6/25/2018 | 
            F2 | 
          
      
    
   
  
    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 | 
            XERS | 
            Stock Appreciation Right | 
            Award | 
            $0 | 
            +500K | 
             | 
            $0.00 | 
            500K | 
            Jan 31, 2024 | 
            Common Stock | 
            500K | 
            $2.46 | 
            Direct | 
            F3, F4 | 
          
      
    
   
  
    * An asterisk sign (*) next to the price indicates that the price is likely invalid.
  
  
    Explanation of Responses:
  
  
  
    Remarks:
  
  Chairman and Chief Executive Officer