Koppers Holdings Inc. (KOP) stock
KOPNYSELumber & Wood Products (No Furniture)Fiscal year ends December 31
Financials through Q3 FY2026, quarter ended Sep 30, 2026Last filing: 10-Q on Nov 6, 2026Score 9/3046% below fair value
$31.16−0.54 (-1.70%)
Close on Nov 13, 2026Market cap $589.28MP/E –Yield 1.03%
Koppers operating margin
Operating margin is operating income as a percentage of revenue.
Koppers's operating margin for the twelve months ending Sep 30, 2026 was -3.3%. For fiscal 2025 it was 8.9%, against 7.1% the year before. The highest annual figure on record is 9.5% in fiscal 2008.
Annual operating margin
| Period | Period end | Value | Change (pts) |
|---|---|---|---|
| FY2025 | Dec 31, 2025 | 8.9% | +1.8 |
| FY2024 | Dec 31, 2024 | 7.1% | −2.0 |
| FY2023 | Dec 31, 2023 | 9.1% | +2.1 |
| FY2022 | Dec 31, 2022 | 7.0% | −2.4 |
| FY2021 | Dec 31, 2021 | 9.3% | −0.1 |
| FY2020 | Dec 31, 2020 | 9.4% | +1.8 |
| FY2019 | Dec 31, 2019 | 7.6% | +2.2 |
| FY2018 | Dec 31, 2018 | 5.4% | −3.0 |
| FY2017 | Dec 31, 2017 | 8.4% | +1.8 |
| FY2016 | Dec 31, 2016 | 6.6% | +8.4 |
| FY2015 | Dec 31, 2015 | -1.8% | −4.0 |
| FY2014 | Dec 31, 2014 | 2.1% | −4.6 |
| FY2013 | Dec 31, 2013 | 6.8% | −1.4 |
| FY2012 | Dec 31, 2012 | 8.1% | −0.2 |
| FY2011 | Dec 31, 2011 | 8.4% | +0.1 |
| FY2010 | Dec 31, 2010 | 8.2% | −0.2 |
| FY2009 | Dec 31, 2009 | 8.4% | −1.1 |
| FY2008 | Dec 31, 2008 | 9.5% | – |
Quarterly operating margin
Change is against the same quarter a year earlier.
| Period | Period end | Value | Change (pts) |
|---|---|---|---|
| Q3 FY2026 | Sep 30, 2026 | 6.1% | −4.6 |
| Q2 FY2026 | Jun 30, 2026 | -31.9% | −39.7 |
| Q1 FY2026 | Mar 31, 2026 | 4.8% | −1.1 |
| Q4 FY2025 | Dec 31, 2025 | 11.5% | +10.2 |
| Q3 FY2025 | Sep 30, 2025 | 10.7% | +1.7 |
| Q2 FY2025 | Jun 30, 2025 | 7.7% | −2.5 |
| Q1 FY2025 | Mar 31, 2025 | 5.9% | −1.0 |
| Q4 FY2024 | Dec 31, 2024 | 1.3% | −5.9 |
| Q3 FY2024 | Sep 30, 2024 | 9.0% | −0.7 |
| Q2 FY2024 | Jun 30, 2024 | 10.2% | +0.8 |
| Q1 FY2024 | Mar 31, 2024 | 7.0% | −2.8 |
| Q4 FY2023 | Dec 31, 2023 | 7.2% | +1.5 |
| Q3 FY2023 | Sep 30, 2023 | 9.7% | +1.7 |
| Q2 FY2023 | Jun 30, 2023 | 9.4% | +3.6 |
| Q1 FY2023 | Mar 31, 2023 | 9.8% | +1.5 |
| Q4 FY2022 | Dec 31, 2022 | 5.7% | −5.1 |
| Q3 FY2022 | Sep 30, 2022 | 8.0% | +2.2 |
| Q2 FY2022 | Jun 30, 2022 | 5.8% | −4.3 |
| Q1 FY2022 | Mar 31, 2022 | 8.3% | −2.5 |
| Q4 FY2021 | Dec 31, 2021 | 10.8% | +1.9 |
| Q3 FY2021 | Sep 30, 2021 | 5.8% | −7.6 |
| Q2 FY2021 | Jun 30, 2021 | 10.0% | −1.3 |
| Q1 FY2021 | Mar 31, 2021 | 10.8% | +7.4 |
| Q4 FY2020 | Dec 31, 2020 | 8.9% | +2.7 |
| Q3 FY2020 | Sep 30, 2020 | 13.4% | +5.0 |
| Q2 FY2020 | Jun 30, 2020 | 11.4% | +2.8 |
| Q1 FY2020 | Mar 31, 2020 | 3.4% | −3.1 |
| Q4 FY2019 | Dec 31, 2019 | 6.2% | +3.0 |
| Q3 FY2019 | Sep 30, 2019 | 8.4% | +1.4 |
| Q2 FY2019 | Jun 30, 2019 | 8.6% | +3.5 |
| Q1 FY2019 | Mar 31, 2019 | 6.4% | −4.2 |
| Q4 FY2018 | Dec 31, 2018 | 3.2% | −0.5 |
| Q3 FY2018 | Sep 30, 2018 | 7.0% | −4.3 |
| Q2 FY2018 | Jun 30, 2018 | 5.1% | −5.0 |
| Q1 FY2018 | Mar 31, 2018 | 10.7% | +2.6 |
| Q4 FY2017 | Dec 31, 2017 | 3.7% | −2.3 |
| Q3 FY2017 | Sep 30, 2017 | 11.4% | – |
| Q2 FY2017 | Jun 30, 2017 | 10.1% | – |
| Q1 FY2017 | Mar 31, 2017 | 8.1% | – |
| Q4 FY2016 | Dec 31, 2016 | 6.0% | – |
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