Exhibit 99.1 

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13G (including additional amendments thereto) with respect to the Common Stock, par value $0.0001 per share, of Ocuphire Pharma, Inc. This Joint Filing Agreement shall be filed as an Exhibit to such Statement.

Dated: May 16, 2022

 

  Richmond Brothers, Inc.
     
  By: /s/ David S. Richmond
    Name:  David S. Richmond
    Title: Chairman 

 

  The RBI Opportunities Fund, LLC
   
  By: RBI PI Manager, LLC
    Manager
     
  By:  /s/ David S. Richmond
    Name:  David S. Richmond
    Title Manager

 

  The RBI Opportunities Fund II, LLC
     
  By:

RBI PI Manager, LLC

Manager

     
  By: /s/ David S. Richmond
    Name:  David S. Richmond
    Title: Manager

 

  RBI Private Investment III, LLC
   
  By:

RBI PI Manager, LLC

Manager

     
  By: /s/ David S. Richmond
    Name:  David S. Richmond
    Title Manager

 

  Richmond Brothers 401(k) Profit Sharing Plan
   
  By: /s/ David S. Richmond
    Name:  David S. Richmond
    Title Trustee 

 

   
    /s/ David S. Richmond
    Name:  David S. Richmond

 

   
    /s/ Matthew J. Curfman
    Name:  Matthew J. Curfman