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        Signature
      
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        /s/ Mary Reumuth, Attorney-in-Fact
      
      
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        Stock symbol
      
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        KALA
      
      
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        Transactions as of
      
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        May 31, 2024
      
      
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        Transactions value $
      
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        -$12,746
      
      
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        Form type
      
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        4
      
      
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        Date filed
      
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        6/3/2024, 08:00 PM
      
 
     
   
 
  
    Transactions Table
  
  
    
      
        
          | Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes | 
      
      
          
            | transaction | KALA | Common Stock | Sale | -$12.7K | -2.09K | -2.33% | $6.09 | 87.7K | May 31, 2024 | Direct | F1, F2, F3 | 
          
            | holding | KALA | Common Stock |  |  |  |  |  | 1 | May 31, 2024 | By son |  | 
      
    
   
  
    * An asterisk sign (*) next to the price indicates that the price is likely invalid.
  
  
    Explanation of Responses:
  
  
  
    Remarks:
  
  President and Chief Operating Officer