- 
        Signature
      
 
      - 
        /s/ Jennifer Ishiguro, Attorney-in-fact for Thomas Keck
      
 
    
    
      
- 
        Stock symbol
      
 
      - 
        STEP
      
 
    
    
      
- 
        Transactions as of
      
 
      - 
        Dec 31, 2024
      
 
    
    
      
- 
        Transactions value $
      
 
      - 
        $0
      
 
    
    
      
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        Form type
      
 
      - 
        4
      
 
    
    
      
- 
        Date filed
      
 
      - 
        1/2/2025, 04:53 PM
      
 
    
    
    
    
   
     
   
 
  
    Transactions Table
  
  
    
      
        
          | Type | 
          Sym | 
          Class | 
          Transaction | 
          Value $ | 
          Shares | 
          Change % | 
          * Price $ | 
          Shares After | 
          Date | 
          Ownership | 
          Footnotes | 
        
      
      
          
            | transaction | 
            STEP | 
            Class B Common Stock | 
            Gift | 
            $0 | 
            -50K | 
            -1.92% | 
            $0.00 | 
            2.55M | 
            Dec 31, 2024 | 
            By Trust | 
             | 
          
          
            | holding | 
            STEP | 
            Class A Common Stock | 
             | 
             | 
             | 
             | 
             | 
            9.16K | 
            Dec 31, 2024 | 
            Direct | 
             | 
          
          
            | holding | 
            STEP | 
            Class B Common Stock | 
             | 
             | 
             | 
             | 
             | 
            1.65M | 
            Dec 31, 2024 | 
            By Cresta Capital, LLC | 
             | 
          
          
            | holding | 
            STEP | 
            Class A Common Stock | 
             | 
             | 
             | 
             | 
             | 
            101K | 
            Dec 31, 2024 | 
            By Trust | 
             | 
          
      
    
   
  
    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 | 
            STEP | 
            Class B Units | 
            Gift | 
             | 
            -50K | 
            -1.92% | 
             | 
            2.55M | 
            Dec 31, 2024 | 
            Class A Common Stock | 
            50K | 
             | 
            By Trust | 
            F1 | 
          
      
    
   
  
    * An asterisk sign (*) next to the price indicates that the price is likely invalid.
  
  
    Explanation of Responses:
  
  
  
    Remarks:
  
  Member of 13D group that owns more than 10%