Koppers to release Q2 2025 results, discuss outlook on August 8, 2025 conference call.

• Koppers Holdings Inc. plans to release Q2 2025 financial results on August 8, 2025 • Webcast available at 11:00 a.m. Eastern Time • Dial 833-366-1128 for US and Canada, 412-902-6774 for international • Conference ID 10196734 • Presentation materials on www.koppers.com • Live audio broadcast available on company's website • Q2 financial results and outlook to be discussed

Koppers Holdings Inc. (NYSE: KOP), a global provider of treated wood products, wood treatment chemicals, and carbon compounds, has announced that it will release its second quarter 2025 financial results on Friday, August 8, 2025, before the market opens. The company will also host a conference call later that day to discuss its financial performance and outlook.

The conference call is scheduled to commence at 11:00 a.m. Eastern Time. Investors and analysts can access the call by dialing 833-366-1128 for U.S. and Canada, or 412-902-6774 for international participants. The conference ID is 10196734. Presentation materials will be available on the company's investor relations website (www.koppers.com) 15 minutes before the call.

The live audio broadcast will be available on the company's website, and an audio replay will be accessible approximately two hours after the call. The replay will be available until November 8, 2025, through the following numbers: 877-344-7529 for U.S. toll-free, 855-669-9658 for Canada toll-free, and 412-317-0088 for international, using replay access code 1226091.

Koppers, with a team of 2,100 employees, focuses on creating, protecting, and preserving key elements of global infrastructure, such as railroad crossties, utility poles, and outdoor wooden structures. The company's mission is to provide safe and sustainable solutions for rail transportation and power grids, among other sectors.

For media inquiries, please contact Ms. Jessica Franklin Black at BlackJF@koppers.com or 412-227-2025. For investment-related inquiries, contact Ms. Quynh McGuire at McGuireQT@koppers.com or 412-227-2049.

References:
[1] https://www.stocktitan.net/news/KOP/koppers-holdings-inc-schedules-second-quarter-2025-conference-aidw32i01tux.html
[2] https://www.marketscreener.com/news/koppers-holdings-inc-schedules-second-quarter-2025-conference-call-ce7c5fdbd88df526