- 
        Signature
      
 
      - 
        /s/ Sahal S. Laher
      
 
    
    
      
- 
        Stock symbol
      
 
      - 
        STON
      
 
    
    
      
- 
        Transactions as of
      
 
      - 
        Apr 1, 2022
      
 
    
    
      
- 
        Transactions value $
      
 
      - 
        $0
      
 
    
    
      
- 
        Form type
      
 
      - 
        3
      
 
    
    
      
- 
        Date filed
      
 
      - 
        4/11/2022, 06:15 PM
      
 
    
    
   
     
   
 
  No securities are beneficially owned.
  
    Remarks:
  
  Senior Vice President and Chief Information Officer Exhibit List - Exhibit 24 - Power of Attorney