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