Koppers Holdings Showcases Commitment to Investors at NYSE Materials Virtual Event

### Koppers Holdings Engages with Investors at NYSE Materials Virtual Event

Koppers Holdings Inc. actively participates in the NYSE Materials Virtual Investor Access Day on March 5, 2026, showcasing its commitment to transparency and investor relations. Representatives from the company, including Interim CFO Bradley Pearce and Vice President of Investor Relations Quynh McGuire, engage with the investment community during this significant event. Participants can access presentation materials through the Investor Relations section of Koppers' official website, emphasizing the company's openness in sharing information with stakeholders.

As a leading integrated global provider in the wood treatment and carbon compound sectors, Koppers employs approximately 1,850 professionals dedicated to producing critical infrastructure components. The company specializes in treated wood products essential for various industries, notably providing railroad crossties, utility poles, and public outdoor structures. Koppers' offerings are fundamental to ensuring reliable rail transportation and power supply, as well as enhancing community spaces, thereby reinforcing the company's role as a key player in maintaining and advancing vital infrastructure.

Koppers is also dedicated to sustainable solutions, reflecting its commitment to environmental stewardship while meeting the evolving needs of future generations. Through continuous innovation and decades of industry expertise, the company positions itself to address the challenges of sustainability and infrastructure resilience. Their dual focus on preserving the environment and delivering high-quality products underlines their strategy to support different sectors, including steel and aluminum industries, while ensuring the safety and longevity of public and industrial infrastructures.

In addition to its engaging investor relations, Koppers highlights its commitment to community outreach and sustainability. Interested parties can reach out for media inquiries to Jessica Franklin Black at 412-227-2025 or via email. Meanwhile, Quynh McGuire is available for discussions related to the investment community at 412-227-2049, further emphasizing the company's transparent communication approach.

As stakeholders look to the future, Koppers Holdings stands poised to leverage its expertise and innovation to meet the growing demand for sustainable infrastructure solutions. The insights shared during the Investor Access Day will likely reinforce Koppers' position in an evolving industry landscape, ultimately benefiting customers, communities, and the environment.