Huntsman CORP

​

HUNTSMAN CORPORATION: PROXY STATEMENT

This Proxy Statement is being furnished to the stockholders of Huntsman in connection with the solicitation of proxies by the Board. The proxies are to be voted at the Annual Meeting to be held on Wednesday, April 29, 2026, at 8:00 a.m. Central Time by virtual meeting atwww.virtualshareholdermeeting.com/HUN2026 for the purposes set forth in the accompanying Notice of Annual Meeting. You will not be able to attend the Annual Meeting physically.

The Board is soliciting your proxy to vote your shares at the Annual Meeting. We will bear the cost of the solicitation, including the cost of the preparation, assembly, printing and, where applicable, mailing of the Notice of Annual Meeting of Stockholders, this Proxy Statement, the proxy card and any additional information furnished by us to our stockholders. In addition to solicitation by mail, certain of our directors, officers and employees may, without extra compensation, solicit proxies by telephone, facsimile, electronic means and personal interview. We have retained Innisfree M&A Incorporated to help us distribute and solicit proxies and agreed to pay them $17,500 and reimburse them for out-of-pocket expenses for these services. We will also make arrangements with brokerage houses, custodians, nominees, and other fiduciaries to send proxy materials to their principals, and we will reimburse them for postage and clerical expenses.