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 13D (including additional amendments thereto) with respect to the shares of Common Stock, $0.10 par value, of Trecora Resources, a Delaware corporation. This Joint Filing Agreement shall be filed as an Exhibit to such Statement.

 

Dated: September 9, 2021

  The Radoff Family Foundation
   
  By:

/s/ Bradley L. Radoff

    Name: Bradley L. Radoff
    Title: Director

 

 

 

/s/ Bradley L. Radoff

  Bradley L. Radoff

 

 

  JEC II Associates, LLC
   
  By:

/s/ Michael Torok

    Name: Michael Torok
    Title: Manager

 

 

  The K. Peter Heiland 2008 Irrevocable Trust
   
  By:

/s/ Michael Torok

    Name: Michael Torok
    Title: Trustee

 

 

  /s/ Michael Torok
  Michael Torok