- 
        Signature
      
 
      - 
        /s/ Christian Vasquez
      
 
    
    
      
- 
        Stock symbol
      
 
      - 
        BCAB
      
 
    
    
      
- 
        Transactions as of
      
 
      - 
        Dec 19, 2023
      
 
    
    
      
- 
        Transactions value $
      
 
      - 
        $15,262
      
 
    
    
      
- 
        Form type
      
 
      - 
        4
      
 
    
    
      
- 
        Date filed
      
 
      - 
        12/19/2023, 04:33 PM
      
 
    
    
    
    
   
     
   
 
  
    Transactions Table
  
  
    
      
        
          | Type | 
          Sym | 
          Class | 
          Transaction | 
          Value $ | 
          Shares | 
          Change % | 
          * Price $ | 
          Shares After | 
          Date | 
          Ownership | 
          Footnotes | 
        
      
      
          
            | transaction | 
            BCAB | 
            Common Stock | 
            Purchase | 
            $15.3K | 
            +7.5K | 
            +6.93% | 
            $2.04 | 
            116K | 
            Dec 19, 2023 | 
            Direct | 
            F1, F2 | 
          
      
    
   
  
    * An asterisk sign (*) next to the price indicates that the price is likely invalid.
  
  
    Explanation of Responses:
  
  
  
    Remarks:
  
  Senior Vice President of Finance, Corporate Controller and Secretary.