UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 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 (Address of principal executive offices) (412) 227-2001 ...

40 2023 Sales Forecast: ~$2.1B KOPPERS = Sales ($ in millions) $2,300 $2,200 $7M $33M ~$2.1B $80M $2,100 $1.98B $2,000 $1,900 $1,800 $1,700 $1,600 $1,500 PC CMC 2022 RUPS 2023 41 2023 Adjusted EBITDA Forecast: $250M Adjusted EBITDA* ($ in millions) $22M $250M $37M ($37M) $228M * Excluding special charges 42 2023 Adjusted EPS Forecast: $4.40 Adjusted EPS* $1.37 $5.50 $(0.08) $5.00 $4.40 $0.03 $4.50 $4.14 $4.00 $(1.06) $3.50 $3.00 $2.50 $2.00 $1.50 $1.00 $0.50 $0.00 2022 D&A Operations Interest Taxes 2023 * E ...

Q1 2023 Results Forward-Looking Statement Investor Day 2023 • Save The Date Management Presentation* Thursday, September 14, 2023 10 A.M. Eastern (9 A.M. Central Time) InterContinental Chicago 3 4 5 g Re-energize Zero Harm engagement at the frontline and accelerate progress towards Zero Training resulted in 14% increase in leading activities; helped to reduce Serious Safety Incidents by 60% vs. prior year 30% (Unaudited) Q1: Adjusted EBITDA by Segment Q1 2023 Adjusted EBITDA $ and % vs. Prior Year $ in Mill ...

Koppers Holdings Inc. (NYSE:KOP) Q1 2023 Earnings Conference Call May 5, 2023 11:00 AM ET Company Participants Quynh McGuire – Vice President-Investor Relations Leroy Ball – President and CEO Jimmi Sue Smith – Chief Financial Officer Conference Call Participants Liam Burke – B. Riley Gary Prestopino – Barrington Research Operator Good morning, ladies and gentlemen. Thank you for standing by. Welcome to Koppers’ First Quarter 2023 Earnings Conference Call and Webcast. [Operator Instructions] I will now turn ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 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 (Address of principal executive offices) (412) 227-2001 ...

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 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) FORM 10-K (IRS Employer Identification No.) ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 436 Seventh Avenue Pittsburgh, Pennsylvania 15219 (412) 227-2001 (Address of principal executive offices) (Reg ...

Koppers Holdings Inc. (NYSE:KOP) Q3 2022 Earnings Conference Call November 4, 2022 11:00 AM ET Company Participants Quynh McGuire – Vice President-Investor Relations Leroy Ball – President and Chief Executive Officer Jimmi Sue Smith – Chief Financial Officer Conference Call Participants Liam Burke – B. Riley FBR Dan Rizzo – Jefferies Chris Shaw – Moness, Crespi Brian DiRubbio – Baird Operator Good morning, ladies and gentlemen. Thank you for standing by. Welcome to the Koppers’ Third Quarter 2022 Earnings C ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 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 (Address of principal executive offices) (412) 227- ...

Koppers Holdings Inc. (NYSE:KOP) Q2 2022 Earnings Conference Call August 4, 2022 11:00 AM ET Company Participants Quynh McGuire - Vice President-Investor Relations Leroy Ball - President & Chief Executive Officer Jimmi Sue Smith - Chief Financial Officer Conference Call Participants Chris Howe - Barrington Research Chris Shaw - Monness, Crespi, Hardt Operator Good morning, ladies and gentlemen. Thank you for standing by. Welcome to Koppers' Q2 2022 Earnings Conference Call and Webcast. At this time, all par ...