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, par value $0.01 per share, of Huntsman Corporation. This Joint Filing Agreement shall be filed as an Exhibit to such Statement.

 

Dated: September 27, 2021

STARBOARD VALUE AND OPPORTUNITY MASTER FUND LTD

By: Starboard Value LP,

its investment manager

 

Starboard Value and Opportunity S LLC

By: Starboard Value LP,

its manager

 

Starboard Value and Opportunity C LP

By: Starboard Value R LP,

its general partner

 

STARBOARD VALUE R LP

By: Starboard Value R GP LLC,

its general partner

 

Starboard Value and Opportunity Master Fund L LP

By: Starboard Value L LP,

its general partner

 

Starboard Leaders Echo II LLC

By: Starboard Value A LP,

its managing member

 

Starboard Leaders Fund lp

By: Starboard Value A LP,

its managing member

 

Starboard Value A LP

By: Starboard Value A GP LLC,

its general partner

 

 

 

 

STARBOARD P FUND LP

By: Starboard Value P GP LLC,

its general partner

 

STARBOARD VALUE P GP LLC

By: Starboard Value R LP,

its member

 

STARBOARD G FUND, L.P.

By: Starboard Value G GP, LLC,

its general partner

 

Starboard Value L LP

By: Starboard Value R GP LLC,

its general partner

 

Starboard X MASTER FUND LTD

By: Starboard Value LP,

its investment manager

 

Starboard Value G GP, LLC

By: Starboard Value A LP,

its managing member

 

STARBOARD VALUE LP

By: Starboard Value GP LLC,

its general partner

 

STARBOARD VALUE GP LLC

By: Starboard Principal Co LP,

its member

 

STARBOARD PRINCIPAL CO LP

By: Starboard Principal Co GP LLC,

its general partner

 

STARBOARD PRINCIPAL CO GP LLC

 

Starboard Value A GP LLC

 

Starboard Value R GP LLC

 

 

 

 
 
By:

/s/ Jeffrey C. Smith

  Name: Jeffrey C. Smith
  Title: Authorized Signatory

 

 
 

/s/ /s/ Jeffrey C. Smith

Jeffrey C. Smith
Individually and as attorney-in-fact for Peter A. Feld