Tranche Update on Minerals Technologies Inc.'s Equity Buyback Plan announced on October 18, 2023.

Minerals Technologies Inc. is a technology-driven specialty minerals company that develops, produces, and markets a range of mineral and mineral-based products, related systems, and services. The Company’s segments include Consumer & Specialties and Engineered Solutions. The Consumer & Specialties segment serves consumer end markets directly and provides mineral-based solutions and technologies for its customers’ products. The two product lines in this segment are Household & Personal Care and Specialty Additives. The Company's Engineered Solutions segment combines all engineered systems, mineral blends, and technologies that are designed to aid in customer processes and projects. The two product lines in this segment are High-Temperature Technologies and Environmental & Infrastructure. The Company serves globally a range of consumer and industrial markets, including household, food and pharmaceutical, paper, packaging, automotive, construction, and environmental.