Koppers Holdings Inc. (NYSE:KOP) Q4 2022 Earnings Conference Call February 27, 2023 11:00 AM ET Company Participants Quynh McGuire - VP-IR Leroy Ball - President and CEO Jimmi Sue Smith - CFO Conference Call Participants Liam Burke - B. Riley FBR Laurence Alexander - Jefferies Operator Good morning, ladies and gentlemen. Thank you for standing by. Welcome to Koppers Fourth Quarter and Full Year 2022 Earnings Conference Call and Webcast. [Operator Instruction] Please note that this event is being recorded. I ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 Commission file number 1-32737 KOPPERS HOLDINGS INC. (Exact name of registrant as specified in its charter) Pennsylvania 20-1878963 (State of incorporation) (IRS Employer Identification No.) 436 Seventh Avenue Pittsburgh, Pennsylvania 15219 (412) 227-2001 (Address of principal executive offices) (Reg ...