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--- Program to include a growth update, product line spotlights, and live R&D demonstrations ---

NEW YORK, Aug. 24, 2026 (GLOBE NEWSWIRE) -- Minerals Technologies Inc. (NYSE: MTX) (“MTI”), a leading, technology-driven specialty minerals company, today announced that it will host its 2026 Investor Day on Tuesday, September 22, 2026, at the company’s research and development center in Bethlehem, Pennsylvania. The event will be held in person and webcast live.

The program will feature presentations from executive management, product line leaders, and R&D leaders to provide insights into MTI’s strategy, growth initiatives, and long-term value creation opportunities.

“Innovation has always been a pillar of our long-term growth strategy and a defining strength of MTI,” said Douglas T. Dietrich, Chairman and Chief Executive Officer. “At this year’s Investor Day, our team will showcase the unique combination of mineral science, processing know-how, and application expertise that is based on many decades of experience and differentiates MTI from its competitors. Investors will hear directly from the leaders advancing this work and see firsthand how our innovation pipeline positions us to participate in exciting new high-potential growth markets.”

Attendees will also have the opportunity to tour the company’s R&D center, experience live demonstrations of MTI’s Crystal Engineering and Engineered Blends technologies, and engage directly with the leaders responsible for advancing MTI’s growth initiatives and technology pipeline.

Investor Day Details
The event will take place on Tuesday, September 22, 2026, beginning at 1:00 p.m. ET.

Attendance and Registration
The event will be webcast live and presentation materials will be available on the Investor Relations section of MTI’s website. Registration is available at MTX 2026 Investor Day Registration. A detailed agenda and additional details will be provided closer to the event date. Investors interested in attending in person should contact MTI Investor Relations.

About Minerals Technologies Inc.
Minerals Technologies Inc. (NYSE:MTX) is a global, technology-driven specialty minerals company that sources, manufactures, sells, and distributes a wide range of minerals and mineral-based products and services. We utilize our global mineral reserves, combined with our core technologies and applications, to deliver innovative products that are an essential part of everyday life. We serve customers in consumer and industrial markets worldwide, have 4,000 employees in 34 countries, and reported global sales of $2.1 billion in 2025. For further information, visit www.mineralstech.com.

Investor Relations Contact
Lydia Kopylova
lydia.kopylova@mineralstech.com

Media Contact
Stephanie Heise
stephanie.heise@mineralstech.com