Tranche Update on Huntsman Corporation's Equity Buyback Plan announced on November 9, 2021.

Huntsman Corporation is a manufacturer of diversified organic chemical products. The Company operates through three segments: Polyurethanes, Performance Products and Advanced Materials. Polyurethanes product segment includes methylene diphenyl diisocyanate, polyols, thermoplastic polyurethane products. Performance Products segment engaged in manufacturing and sale of amines and maleic anhydride and serves a wide variety of consumer and industrial end markets. Its Advanced Materials segment includes technologically advanced epoxy, phenoxy, acrylic, polyurethane, mercaptan and acrylonitrile butadiene-based polymer products as well as carbon nanomaterials. Its products comprise different chemicals and chemical formulations, which it markets globally to a wide range of consumers that consist primarily of industrial and building product manufacturers. The Company’s products are used adhesives, aerospace, automotive, coatings and construction, construction products, durable and non-durable.