IR Contacts
| Primary IR Contact |
| Investor Relations Koppers Holdings Inc. E-mail: McGuireQT@koppers.com |
| Transfer Agent |
| Computershare P.O. Box 30170 College Station, TX 77842-3170 Phone: 866-293-5637 Corporate Website: www.computershare.com/investor |
| Accountants |
| Ernst &Young LLP Pittsburgh, PA |
| Legal |
| K&L Gates LLP 210 Sixth Avenue Pittsburgh, PA 15222-2613 |
