Orion S.A. (NYSE:OEC), a global specialty chemicals producer, earned a Platinum rating for its 2025 performance from EcoVadis, one of the world's largest independent providers of business sustainability ratings, the company announced today.

The Platinum designation places Orion in the top 1% of companies worldwide evaluated by EcoVadis. The assessment measures performance across four areas: environment, ethics, sustainable procurement, and labor and human rights.

"Achieving a Platinum rating for 2025 capped another successful year for sustainability at Orion," the company's CEO, Corning Painter, said. "Among many achievements, we launched bio-circular grades of carbon black, improved energy efficiency across our operations, expanded leadership training programs and won an industry award for safety performance at our plants."

Painter added, "EcoVadis raises its standards every year, so maintaining our Platinum rating will require a stronger performance in 2026. But I'm confident our colleagues across the world who worked so hard to earn Platinum in 2025 will rise to that challenge again, as Orion continues to make progress on longer-term strategic sustainability goals aimed at cost-effective grades."

In addition to the EcoVadis recognition, Orion maintained a strong B score from CDP, a global nonprofit organization that manages the world's leading system to measure, manage and disclose an organization's environmental impacts.

Announced in December 2025, the CDP rating recognized Orion's progress in mitigating the impact of climate change through effective emissions management. Notably, this past year's assessment included an upgraded A rating on CDP's Supplier Engagement Assessment, based on Orion's governance, targets, scope 3 emissions and value chain engagement.

About Orion S.A.

Orion S.A. (NYSE:OEC) is a leading global supplier of carbon black, a solid form of carbon produced as powder or pellets. The material is made to customers' exacting specifications for tires, coatings, ink, batteries, plastics and numerous other specialty, high-performance applications. Carbon black is used to tint, colorize, provide reinforcement, conduct electricity, increase durability and add UV protection. Orion has four innovation centers and produces carbon black at 15 plants worldwide, offering the most diverse variety of production processes in the industry. The company's corporate lineage goes back more than 160 years to Germany, where it operates the world's longest-running carbon black plant. Orion is a leading innovator, applying a deep understanding of customers' needs to deliver sustainable solutions. For more information, please visit orioncarbons.com.

Forward-Looking Statements

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William Foreman

Orion S.A.

Director of Corporate Communications and Government Affairs

william.foreman@orioncarbons.com

Direct: +1 832-445-3305

Christopher Kapsch

Orion S.A.

Vice President of Investor Relations

christopher.kapsch@orioncarbons.com

Direct: +1 281-318-4413

Orion S.A. Earns Platinum Sustainability Rating From EcoVadis