Koppers Celebrates Two Decades on the NYSE with Closing Bell Ceremony

Koppers Celebrates 20 Years on the NYSE

On March 30, 2026, Koppers Holdings Inc. (NYSE: KOP) will mark its 20th anniversary of trading on the New York Stock Exchange by ringing the closing bell at 4:00 PM Eastern Time. The ceremony will be officiated by CEO and Chairman Leroy Ball alongside senior management, symbolizing two decades of dedication and success in the industry.

Koppers has transformed over these years, positioning itself as a leader in providing treated wood products, wood treatment chemicals, and carbon compounds. The company's evolution is attributed to the hard work and resilience of its global workforce. As Leroy Ball stated, “The Koppers team is proud to celebrate our 20th anniversary of being listed on the NYSE.”

Reflecting on their journey, Ball emphasized the organization's commitment to becoming stronger and more sustainable. He remarked, “Guided by our strategy to grow our highest-value businesses that support residential construction and utility infrastructure, Koppers is poised to elevate our operating and financial performance.”

The event will not only be a tribute to Koppers’ achievements but also a platform for the management team to engage with the financial community. Following the closing bell ceremony, Koppers will host meetings with investors in New York on March 31, 2026, featuring discussions led by Ball, Doug Fenwick (President of Performance Chemicals), and Quynh McGuire (Vice President of Investor Relations).

The celebration will be streamed live, allowing stakeholders and interested parties to join via the NYSE website and YouTube channel. Additionally, Ball is expected to appear in an interview segment on the financial news program "Taking Stock," hosted by J.D. Durkin, further showcasing Koppers' commitment to transparency and investor relations.

Koppers has established itself as an indispensable player in the infrastructure sector, focusing on essential products like railroad crossties and utility poles. Through continuous innovation and a strong commitment to safety and sustainability, Koppers supports a variety of industries, enabling rail transportation and facilitating energy supply.

This anniversary stands as a testament not only to Koppers’ past achievements but also to its future potential. As the company looks forward, it remains dedicated to providing superior value to its customers and shareholders while working responsibly for a brighter future.

For more information about the anniversary celebration and Koppers' strategic vision, please refer to the investor relations resources available at Koppers.com. The management team welcomes inquiries from the media and investment community, underscoring their openness and commitment to engagement.

In closing, the ringing of the NYSE bell is more than just a ceremonial milestone for Koppers Holdings Inc.; it symbolizes a robust pathway of resilience, innovation, and forward-thinking strategies that will continue to drive the organization in the years to come. Watch and join the celebration as Koppers rings in the next chapter of its journey on the NYSE.