Achieves Top 15% of Assessed Companies

Materion Corporation (NYSE:MTRN), a global leader in advanced materials solutions, today announced it has achieved a Silver Rating in the 2026 EcoVadis Sustainability Assessment. This recognition places Materion among the top 15% of companies evaluated worldwide and underscores the company's ongoing dedication to responsible business practices across its operations and global supply chain.

The EcoVadis Sustainability Assessment is a leading annual evaluation that benchmarks companies on policies, actions, and performance in four core themes: Environmental Impact, Labor and Human Rights, Ethics, and Sustainable Procurement. Using an evidence-based methodology aligned with international standards such as ISO 26000, GRI, and the UN Global Compact, the assessment helps organizations identify risks, opportunities, and areas for continuous improvement.

Many of Materion's key customers rely on EcoVadis ratings to evaluate sustainability performance within their own operations and across supply chains. Participation and strong scoring helps reduce supply chain risks while demonstrating transparent adherence to standardized sustainability criteria.

Through continued collaboration and improvement, Materion remains focused on delivering advanced materials that meet the highest standards for product performance and sustainability.

About Materion

Materion Corporation is a global leader in advanced materials solutions for high-performance industries including semiconductor, industrial, aerospace & defense, energy and automotive. With nearly 100 years of expertise in specialty engineered alloy systems, inorganic chemicals and powders, precious and non-precious metals, beryllium and beryllium composites, and precision filters and optical coatings, Materion partners with customers to enable breakthrough solutions that move the world forward. Headquartered in Mayfield Heights, Ohio, the company employs nearly 3,000 people worldwide, serving customers in more than 60 countries.

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FOR FURTHER INFORMATION, PLEASE CONTACT:

Media:

Jason Saragian

(216) 383-6893

jason.saragian@materion.com

Investors:

Kyle Kelleher

(216) 383-4931

kyle.kelleher@materion.com

Materion Earns EcoVadis Silver Rating for 2026