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 amendments thereto) with respect to the Common Stock, $0.0001 par value, of KLX Energy Services Holdings, Inc. This Joint Filing Agreement shall be filed as an Exhibit to such Statement.

STEEL PARTNERS HOLDINGS L.P.
 
By:

/s/ Maria Reda

 
  Maria Reda, Secretary of Steel Partners Holdings GP Inc., its General Partner
Date: 09/03/2026

 

Steel Partners Holdings GP Inc.
 
By:

/s/ Maria Reda

 
  Maria Reda, Secretary
Date: 09/03/2026

 

SPH Group LLC
 
By:

/s/ Maria Reda

 
  Maria Reda, Secretary of Steel Partners Holdings GP Inc., its Managing Member
Date: 09/03/2026

 

SPH Group Holdings LLC
 
By:

/s/ Maria Reda

 
  Maria Reda, Secretary of Steel Partners Holdings GP Inc., its Manager
Date: 09/03/2026

 

Steel Excel Inc.
 
By:

/s/ Maria Reda

 
  Maria Reda, Secretary
Date: 09/03/2026

 

Steel Connect LLC
 
By:

/s/ Maria Reda

 
  Maria Reda, Secretary
Date: 09/03/2026

 

SP Strategic Holdings LLC
 
By:

/s/ Maria Reda

 
  Maria Reda, Secretary
Date: 09/03/2026