Listed

Koppers Holdings Inc.

KOPNYSECIK 1315257MaterialsFiscal year ends Dec 31

Standardized line items from XBRL company facts, the last twelve quarters. Negative values are in parentheses. A figure marked d is derived from year-to-date figures.

Income statement

Revenue$520.1m, Q2 FY2026
Operating income−$166.0m, Q2 FY2026
Net income−$147.5m, Q2 FY2026
Koppers Holdings Inc., income statement, quarterly
Line itemUnitQ3 FY20232023-09-30Q4 FY20232023-12-31Q1 FY20242024-03-31Q2 FY20242024-06-30Q3 FY20242024-09-30Q4 FY20242024-12-31Q1 FY20252025-03-31Q2 FY20252025-06-30Q3 FY20252025-09-30Q4 FY20252025-12-31Q1 FY20262026-03-31Q2 FY20262026-06-30
Revenue$m550Revenue, Q3 FY2023, three months to 2023-09-30$550.4m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2024-11-08, accession 0000950170-24-123804.Report this figure513Revenue, Q4 FY2023, three months to 2023-12-31$513.2m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure498Revenue, Q1 FY2024, three months to 2024-03-31$497.6m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure563Revenue, Q2 FY2024, three months to 2024-06-30$563.2m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-08-08, accession 0000950170-25-105595.Report this figure554Revenue, Q3 FY2024, three months to 2024-09-30$554.3m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure477Revenue, Q4 FY2024, three months to 2024-12-31$477.0m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure457Revenue, Q1 FY2025, three months to 2025-03-31$456.5m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure505Revenue, Q2 FY2025, three months to 2025-06-30$504.8m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure485Revenue, Q3 FY2025, three months to 2025-09-30$485.3m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure433Revenue, Q4 FY2025, three months to 2025-12-31$432.7m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure455Revenue, Q1 FY2026, three months to 2026-03-31$455.3m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure520Revenue, Q2 FY2026, three months to 2026-06-30$520.1m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure
Cost of revenue$m439Cost of revenue, Q3 FY2023, three months to 2023-09-30$439.0m. XBRL concept us-gaap:CostOfGoodsAndServicesSold. 10-Q filed 2024-11-08, accession 0000950170-24-123804.Report this figure417Cost of revenue, Q4 FY2023, three months to 2023-12-31$416.7m. XBRL concept us-gaap:CostOfGoodsAndServicesSold. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure401Cost of revenue, Q1 FY2024, three months to 2024-03-31$401.4m. XBRL concept us-gaap:CostOfGoodsAndServicesSold. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure442Cost of revenue, Q2 FY2024, three months to 2024-06-30$441.6m. XBRL concept us-gaap:CostOfGoodsAndServicesSold. 10-Q filed 2025-08-08, accession 0000950170-25-105595.Report this figure433Cost of revenue, Q3 FY2024, three months to 2024-09-30$433.1m. XBRL concept us-gaap:CostOfGoodsAndServicesSold. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure393Cost of revenue, Q4 FY2024, three months to 2024-12-31$393.4m. XBRL concept us-gaap:CostOfGoodsAndServicesSold. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure351Cost of revenue, Q1 FY2025, three months to 2025-03-31$350.7m. XBRL concept us-gaap:CostOfGoodsAndServicesSold. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure391Cost of revenue, Q2 FY2025, three months to 2025-06-30$390.6m. XBRL concept us-gaap:CostOfGoodsAndServicesSold. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure368Cost of revenue, Q3 FY2025, three months to 2025-09-30$368.3m. XBRL concept us-gaap:CostOfGoodsAndServicesSold. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure322Cost of revenue, Q4 FY2025, three months to 2025-12-31$321.9m. XBRL concept us-gaap:CostOfGoodsAndServicesSold. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure369Cost of revenue, Q1 FY2026, three months to 2026-03-31$368.7m. XBRL concept us-gaap:CostOfGoodsAndServicesSold. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure411Cost of revenue, Q2 FY2026, three months to 2026-06-30$411.1m. XBRL concept us-gaap:CostOfGoodsAndServicesSold. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure
Selling, general and administrative$m43.8Selling, general and administrative, Q3 FY2023, three months to 2023-09-30$43.8m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2024-11-08, accession 0000950170-24-123804.Report this figure45.0Selling, general and administrative, Q4 FY2023, three months to 2023-12-31$45.0m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure45.5Selling, general and administrative, Q1 FY2024, three months to 2024-03-31$45.5m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure45.9Selling, general and administrative, Q2 FY2024, three months to 2024-06-30$45.9m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2025-08-08, accession 0000950170-25-105595.Report this figure43.9Selling, general and administrative, Q3 FY2024, three months to 2024-09-30$43.9m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure44.0Selling, general and administrative, Q4 FY2024, three months to 2024-12-31$44.0m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure41.1Selling, general and administrative, Q1 FY2025, three months to 2025-03-31$41.1m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure39.5Selling, general and administrative, Q2 FY2025, three months to 2025-06-30$39.5m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure37.5Selling, general and administrative, Q3 FY2025, three months to 2025-09-30$37.5m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure36.8Selling, general and administrative, Q4 FY2025, three months to 2025-12-31$36.8m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure41.7Selling, general and administrative, Q1 FY2026, three months to 2026-03-31$41.7m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure40.9Selling, general and administrative, Q2 FY2026, three months to 2026-06-30$40.9m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure
Operating income$m53.3Operating income, Q3 FY2023, three months to 2023-09-30$53.3m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2024-11-08, accession 0000950170-24-123804.Report this figure37.2Operating income, Q4 FY2023, three months to 2023-12-31$37.2m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure34.6Operating income, Q1 FY2024, three months to 2024-03-31$34.6m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure57.5Operating income, Q2 FY2024, three months to 2024-06-30$57.5m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2025-08-08, accession 0000950170-25-105595.Report this figure49.7Operating income, Q3 FY2024, three months to 2024-09-30$49.7m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure6.4Operating income, Q4 FY2024, three months to 2024-12-31$6.4m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure27.0Operating income, Q1 FY2025, three months to 2025-03-31$27.0m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure39.1Operating income, Q2 FY2025, three months to 2025-06-30$39.1m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure51.8Operating income, Q3 FY2025, three months to 2025-09-30$51.8m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure49.9Operating income, Q4 FY2025, three months to 2025-12-31$49.9m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure22.0Operating income, Q1 FY2026, three months to 2026-03-31$22.0m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure(166)Operating income, Q2 FY2026, three months to 2026-06-30−$166.0m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure
Interest expense$m19.0Interest expense, Q3 FY2023, three months to 2023-09-30$19.0m. XBRL concept us-gaap:InterestExpense. 10-Q filed 2024-11-08, accession 0000950170-24-123804.Report this figure17.7Interest expense, Q4 FY2023, three months to 2023-12-31$17.7m. XBRL concept us-gaap:InterestExpense. 10-K filed 2025-02-27, accession 0000950170-25-028542. Derived: 12-month figure less the 9-month figure.Report this figure17.1Interest expense, Q1 FY2024, three months to 2024-03-31$17.1m. XBRL concept us-gaap:InterestExpense. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure20.6Interest expense, Q2 FY2024, three months to 2024-06-30$20.6m. XBRL concept us-gaap:InterestExpense. 10-Q filed 2025-08-08, accession 0000950170-25-105595.Report this figure20.2Interest expense, Q3 FY2024, three months to 2024-09-30$20.2m. XBRL concept us-gaap:InterestExpense. 10-Q filed 2024-11-08, accession 0000950170-24-123804.Report this figure18.3Interest expense, Q4 FY2024, three months to 2024-12-31$18.3m. XBRL concept us-gaap:InterestExpense. 10-K filed 2025-02-27, accession 0000950170-25-028542. Derived: 12-month figure less the 9-month figure.Report this figure16.6Interest expense, Q1 FY2025, three months to 2025-03-31$16.6m. XBRL concept us-gaap:InterestExpense. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure17.3Interest expense, Q2 FY2025, three months to 2025-06-30$17.3m. XBRL concept us-gaap:InterestExpense. 10-Q filed 2025-08-08, accession 0000950170-25-105595.Report this figure16.7Interest expense, Q3 FY2025, three months to 2025-09-30$16.7m. XBRL concept us-gaap:InterestExpenseNonoperating. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure15.5Interest expense, Q4 FY2025, three months to 2025-12-31$15.5m. XBRL concept us-gaap:InterestExpenseNonoperating. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure15.0Interest expense, Q1 FY2026, three months to 2026-03-31$15.0m. XBRL concept us-gaap:InterestExpenseNonoperating. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure15.0Interest expense, Q2 FY2026, three months to 2026-06-30$15.0m. XBRL concept us-gaap:InterestExpenseNonoperating. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure
Income tax$m8.3Income tax, Q3 FY2023, three months to 2023-09-30$8.3m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2024-11-08, accession 0000950170-24-123804.Report this figure6.7Income tax, Q4 FY2023, three months to 2023-12-31$6.7m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure4.4Income tax, Q1 FY2024, three months to 2024-03-31$4.4m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure10.2Income tax, Q2 FY2024, three months to 2024-06-30$10.2m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2025-08-08, accession 0000950170-25-105595.Report this figure10.6Income tax, Q3 FY2024, three months to 2024-09-30$10.6m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure(4.5)Income tax, Q4 FY2024, three months to 2024-12-31−$4.5m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure(3.3)Income tax, Q1 FY2025, three months to 2025-03-31−$3.3m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure7.5Income tax, Q2 FY2025, three months to 2025-06-30$7.5m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure12.0Income tax, Q3 FY2025, three months to 2025-09-30$12.0m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure9.0Income tax, Q4 FY2025, three months to 2025-12-31$9.0m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure0.8Income tax, Q1 FY2026, three months to 2026-03-31$800.0k. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure(32.5)Income tax, Q2 FY2026, three months to 2026-06-30−$32.5m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure
Net income$m26.3Net income, Q3 FY2023, three months to 2023-09-30$26.3m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2024-11-08, accession 0000950170-24-123804.Report this figure12.9Net income, Q4 FY2023, three months to 2023-12-31$12.9m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure13.0Net income, Q1 FY2024, three months to 2024-03-31$13.0m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure26.8Net income, Q2 FY2024, three months to 2024-06-30$26.8m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2025-08-08, accession 0000950170-25-105595.Report this figure22.8Net income, Q3 FY2024, three months to 2024-09-30$22.8m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure(10.2)Net income, Q4 FY2024, three months to 2024-12-31−$10.2m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure(13.9)Net income, Q1 FY2025, three months to 2025-03-31−$13.9m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure16.4Net income, Q2 FY2025, three months to 2025-06-30$16.4m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure23.8Net income, Q3 FY2025, three months to 2025-09-30$23.8m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure29.7Net income, Q4 FY2025, three months to 2025-12-31$29.7m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure7.1Net income, Q1 FY2026, three months to 2026-03-31$7.1m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure(148)Net income, Q2 FY2026, three months to 2026-06-30−$147.5m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure
Diluted EPS$ per share1.22Diluted EPS, Q3 FY2023, three months to 2023-09-30$1.22 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2024-11-08, accession 0000950170-24-123804.Report this figurenot reported0.59Diluted EPS, Q1 FY2024, three months to 2024-03-31$0.59 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure1.25Diluted EPS, Q2 FY2024, three months to 2024-06-30$1.25 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2025-08-08, accession 0000950170-25-105595.Report this figure1.09Diluted EPS, Q3 FY2024, three months to 2024-09-30$1.09 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figurenot reported(0.68)Diluted EPS, Q1 FY2025, three months to 2025-03-31−$0.68 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure0.81Diluted EPS, Q2 FY2025, three months to 2025-06-30$0.81 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure1.17Diluted EPS, Q3 FY2025, three months to 2025-09-30$1.17 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figurenot reported0.35Diluted EPS, Q1 FY2026, three months to 2026-03-31$0.35 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure(7.71)Diluted EPS, Q2 FY2026, three months to 2026-06-30−$7.71 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure
Basic EPS$ per share1.27Basic EPS, Q3 FY2023, three months to 2023-09-30$1.27 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2024-11-08, accession 0000950170-24-123804.Report this figurenot reported0.61Basic EPS, Q1 FY2024, three months to 2024-03-31$0.61 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure1.29Basic EPS, Q2 FY2024, three months to 2024-06-30$1.29 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2025-08-08, accession 0000950170-25-105595.Report this figure1.12Basic EPS, Q3 FY2024, three months to 2024-09-30$1.12 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figurenot reported(0.68)Basic EPS, Q1 FY2025, three months to 2025-03-31−$0.68 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure0.83Basic EPS, Q2 FY2025, three months to 2025-06-30$0.83 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure1.21Basic EPS, Q3 FY2025, three months to 2025-09-30$1.21 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figurenot reported0.36Basic EPS, Q1 FY2026, three months to 2026-03-31$0.36 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure(7.71)Basic EPS, Q2 FY2026, three months to 2026-06-30−$7.71 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure

Balance sheet

Long-term debt$892.7m, Q2 FY2026
Shareholders' equity$387.0m, Q2 FY2026
Koppers Holdings Inc., balance sheet, quarterly
Line itemUnitQ3 FY20232023-09-30FY20232023-12-31Q1 FY20242024-03-31Q2 FY20242024-06-30Q3 FY20242024-09-30FY20242024-12-31Q1 FY20252025-03-31Q2 FY20252025-06-30Q3 FY20252025-09-30FY20252025-12-31Q1 FY20262026-03-31Q2 FY20262026-06-30
Cash and equivalents$mnot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reported
Current assets$m700Current assets, Q3 FY2023, at 2023-09-30$699.5m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2023-11-03, accession 0000950170-23-058640.Report this figure699Current assets, FY2023, at 2023-12-31$699.0m. XBRL concept us-gaap:AssetsCurrent. 10-K filed 2025-02-27, accession 0000950170-25-028542.Report this figure708Current assets, Q1 FY2024, at 2024-03-31$707.7m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2024-05-03, accession 0000950170-24-052678.Report this figure721Current assets, Q2 FY2024, at 2024-06-30$721.4m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2024-08-08, accession 0000950170-24-093561.Report this figure730Current assets, Q3 FY2024, at 2024-09-30$730.1m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2024-11-08, accession 0000950170-24-123804.Report this figure681Current assets, FY2024, at 2024-12-31$680.6m. XBRL concept us-gaap:AssetsCurrent. 10-K filed 2026-02-26, accession 0001315257-26-000012.Report this figure692Current assets, Q1 FY2025, at 2025-03-31$691.8m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure708Current assets, Q2 FY2025, at 2025-06-30$708.0m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2025-08-08, accession 0000950170-25-105595.Report this figure683Current assets, Q3 FY2025, at 2025-09-30$682.8m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure669Current assets, FY2025, at 2025-12-31$668.7m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure669Current assets, Q1 FY2026, at 2026-03-31$668.9m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure680Current assets, Q2 FY2026, at 2026-06-30$679.6m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure
Total assets$m1,810Total assets, Q3 FY2023, at 2023-09-30$1.81bn. XBRL concept us-gaap:Assets. 10-Q filed 2023-11-03, accession 0000950170-23-058640.Report this figure1,836Total assets, FY2023, at 2023-12-31$1.84bn. XBRL concept us-gaap:Assets. 10-K filed 2025-02-27, accession 0000950170-25-028542.Report this figure1,845Total assets, Q1 FY2024, at 2024-03-31$1.85bn. XBRL concept us-gaap:Assets. 10-Q filed 2024-05-03, accession 0000950170-24-052678.Report this figure1,948Total assets, Q2 FY2024, at 2024-06-30$1.95bn. XBRL concept us-gaap:Assets. 10-Q filed 2024-08-08, accession 0000950170-24-093561.Report this figure1,960Total assets, Q3 FY2024, at 2024-09-30$1.96bn. XBRL concept us-gaap:Assets. 10-Q filed 2024-11-08, accession 0000950170-24-123804.Report this figure1,890Total assets, FY2024, at 2024-12-31$1.89bn. XBRL concept us-gaap:Assets. 10-K filed 2026-02-26, accession 0001315257-26-000012.Report this figure1,891Total assets, Q1 FY2025, at 2025-03-31$1.89bn. XBRL concept us-gaap:Assets. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure1,931Total assets, Q2 FY2025, at 2025-06-30$1.93bn. XBRL concept us-gaap:Assets. 10-Q filed 2025-08-08, accession 0000950170-25-105595.Report this figure1,895Total assets, Q3 FY2025, at 2025-09-30$1.89bn. XBRL concept us-gaap:Assets. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure1,887Total assets, FY2025, at 2025-12-31$1.89bn. XBRL concept us-gaap:Assets. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure1,880Total assets, Q1 FY2026, at 2026-03-31$1.88bn. XBRL concept us-gaap:Assets. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure1,722Total assets, Q2 FY2026, at 2026-06-30$1.72bn. XBRL concept us-gaap:Assets. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure
Current liabilities$m313Current liabilities, Q3 FY2023, at 2023-09-30$312.9m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2023-11-03, accession 0000950170-23-058640.Report this figure326Current liabilities, FY2023, at 2023-12-31$325.9m. XBRL concept us-gaap:LiabilitiesCurrent. 10-K filed 2025-02-27, accession 0000950170-25-028542.Report this figure309Current liabilities, Q1 FY2024, at 2024-03-31$308.9m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2024-05-03, accession 0000950170-24-052678.Report this figure285Current liabilities, Q2 FY2024, at 2024-06-30$284.9m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2024-08-08, accession 0000950170-24-093561.Report this figure287Current liabilities, Q3 FY2024, at 2024-09-30$287.0m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2024-11-08, accession 0000950170-24-123804.Report this figure326Current liabilities, FY2024, at 2024-12-31$325.8m. XBRL concept us-gaap:LiabilitiesCurrent. 10-K filed 2026-02-26, accession 0001315257-26-000012.Report this figure262Current liabilities, Q1 FY2025, at 2025-03-31$262.2m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure272Current liabilities, Q2 FY2025, at 2025-06-30$272.3m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2025-08-08, accession 0000950170-25-105595.Report this figure260Current liabilities, Q3 FY2025, at 2025-09-30$259.8m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure227Current liabilities, FY2025, at 2025-12-31$227.1m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure247Current liabilities, Q1 FY2026, at 2026-03-31$246.5m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure291Current liabilities, Q2 FY2026, at 2026-06-30$291.4m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure
Total liabilities$m1,334Total liabilities, Q3 FY2023, at 2023-09-30$1.33bn. XBRL concept us-gaap:Liabilities. 10-Q filed 2023-11-03, accession 0000950170-23-058640.Report this figure1,333Total liabilities, FY2023, at 2023-12-31$1.33bn. XBRL concept us-gaap:Liabilities. 10-K filed 2025-02-27, accession 0000950170-25-028542.Report this figure1,335Total liabilities, Q1 FY2024, at 2024-03-31$1.34bn. XBRL concept us-gaap:Liabilities. 10-Q filed 2024-05-03, accession 0000950170-24-052678.Report this figure1,435Total liabilities, Q2 FY2024, at 2024-06-30$1.43bn. XBRL concept us-gaap:Liabilities. 10-Q filed 2024-08-08, accession 0000950170-24-093561.Report this figure1,427Total liabilities, Q3 FY2024, at 2024-09-30$1.43bn. XBRL concept us-gaap:Liabilities. 10-Q filed 2024-11-08, accession 0000950170-24-123804.Report this figure1,401Total liabilities, FY2024, at 2024-12-31$1.40bn. XBRL concept us-gaap:Liabilities. 10-K filed 2026-02-26, accession 0001315257-26-000012.Report this figure1,393Total liabilities, Q1 FY2025, at 2025-03-31$1.39bn. XBRL concept us-gaap:Liabilities. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure1,404Total liabilities, Q2 FY2025, at 2025-06-30$1.40bn. XBRL concept us-gaap:Liabilities. 10-Q filed 2025-08-08, accession 0000950170-25-105595.Report this figure1,349Total liabilities, Q3 FY2025, at 2025-09-30$1.35bn. XBRL concept us-gaap:Liabilities. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure1,313Total liabilities, FY2025, at 2025-12-31$1.31bn. XBRL concept us-gaap:Liabilities. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure1,331Total liabilities, Q1 FY2026, at 2026-03-31$1.33bn. XBRL concept us-gaap:Liabilities. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure1,335Total liabilities, Q2 FY2026, at 2026-06-30$1.34bn. XBRL concept us-gaap:Liabilities. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure
Long-term debt$m860Long-term debt, Q3 FY2023, at 2023-09-30$859.8m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-Q filed 2023-11-03, accession 0000950170-23-058640.Report this figure835Long-term debt, FY2023, at 2023-12-31$835.4m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-K filed 2025-02-27, accession 0000950170-25-028542.Report this figure865Long-term debt, Q1 FY2024, at 2024-03-31$865.1m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-Q filed 2024-05-03, accession 0000950170-24-052678.Report this figure987Long-term debt, Q2 FY2024, at 2024-06-30$986.7m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-Q filed 2024-08-08, accession 0000950170-24-093561.Report this figure976Long-term debt, Q3 FY2024, at 2024-09-30$975.9m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-Q filed 2024-11-08, accession 0000950170-24-123804.Report this figure926Long-term debt, FY2024, at 2024-12-31$925.9m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-K filed 2026-02-26, accession 0001315257-26-000012.Report this figure976Long-term debt, Q1 FY2025, at 2025-03-31$975.9m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure963Long-term debt, Q2 FY2025, at 2025-06-30$962.9m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-Q filed 2025-08-08, accession 0000950170-25-105595.Report this figure918Long-term debt, Q3 FY2025, at 2025-09-30$918.3m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure914Long-term debt, FY2025, at 2025-12-31$914.3m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure915Long-term debt, Q1 FY2026, at 2026-03-31$915.3m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure893Long-term debt, Q2 FY2026, at 2026-06-30$892.7m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure
Current portion of debt$m4.0Current portion of debt, Q3 FY2023, at 2023-09-30$4.0m. XBRL concept us-gaap:LongTermDebtCurrent. 10-Q filed 2023-11-03, accession 0000950170-23-058640.Report this figure5.0Current portion of debt, FY2023, at 2023-12-31$5.0m. XBRL concept us-gaap:LongTermDebtCurrent. 10-K filed 2025-02-27, accession 0000950170-25-028542.Report this figure4.0Current portion of debt, Q1 FY2024, at 2024-03-31$4.0m. XBRL concept us-gaap:LongTermDebtCurrent. 10-Q filed 2024-05-03, accession 0000950170-24-052678.Report this figure5.0Current portion of debt, Q2 FY2024, at 2024-06-30$5.0m. XBRL concept us-gaap:LongTermDebtCurrent. 10-Q filed 2024-08-08, accession 0000950170-24-093561.Report this figure5.0Current portion of debt, Q3 FY2024, at 2024-09-30$5.0m. XBRL concept us-gaap:LongTermDebtCurrent. 10-Q filed 2024-11-08, accession 0000950170-24-123804.Report this figure4.9Current portion of debt, FY2024, at 2024-12-31$4.9m. XBRL concept us-gaap:LongTermDebtCurrent. 10-K filed 2026-02-26, accession 0001315257-26-000012.Report this figure4.9Current portion of debt, Q1 FY2025, at 2025-03-31$4.9m. XBRL concept us-gaap:LongTermDebtCurrent. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure4.9Current portion of debt, Q2 FY2025, at 2025-06-30$4.9m. XBRL concept us-gaap:LongTermDebtCurrent. 10-Q filed 2025-08-08, accession 0000950170-25-105595.Report this figure4.9Current portion of debt, Q3 FY2025, at 2025-09-30$4.9m. XBRL concept us-gaap:LongTermDebtCurrent. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure4.9Current portion of debt, FY2025, at 2025-12-31$4.9m. XBRL concept us-gaap:LongTermDebtCurrent. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure4.9Current portion of debt, Q1 FY2026, at 2026-03-31$4.9m. XBRL concept us-gaap:LongTermDebtCurrent. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure4.9Current portion of debt, Q2 FY2026, at 2026-06-30$4.9m. XBRL concept us-gaap:LongTermDebtCurrent. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure
Shareholders' equity$m472Shareholders' equity, Q3 FY2023, at 2023-09-30$472.0m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2023-11-03, accession 0000950170-23-058640.Report this figure499Shareholders' equity, FY2023, at 2023-12-31$498.9m. XBRL concept us-gaap:StockholdersEquity. 10-K filed 2025-02-27, accession 0000950170-25-028542.Report this figure506Shareholders' equity, Q1 FY2024, at 2024-03-31$505.8m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2024-05-03, accession 0000950170-24-052678.Report this figure509Shareholders' equity, Q2 FY2024, at 2024-06-30$509.2m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2024-08-08, accession 0000950170-24-093561.Report this figure532Shareholders' equity, Q3 FY2024, at 2024-09-30$532.3m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2024-11-08, accession 0000950170-24-123804.Report this figure489Shareholders' equity, FY2024, at 2024-12-31$488.7m. XBRL concept us-gaap:StockholdersEquity. 10-K filed 2026-02-26, accession 0001315257-26-000012.Report this figure498Shareholders' equity, Q1 FY2025, at 2025-03-31$498.0m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure527Shareholders' equity, Q2 FY2025, at 2025-06-30$526.8m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2025-08-08, accession 0000950170-25-105595.Report this figure546Shareholders' equity, Q3 FY2025, at 2025-09-30$545.6m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure574Shareholders' equity, FY2025, at 2025-12-31$574.0m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure550Shareholders' equity, Q1 FY2026, at 2026-03-31$549.5m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure387Shareholders' equity, Q2 FY2026, at 2026-06-30$387.0m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure

Cash flow

Operating cash flow$50.0m, Q2 FY2026
Capital expenditure$12.3m, Q2 FY2026
Share repurchases$14.9m, Q2 FY2026
Koppers Holdings Inc., cash flow, quarterly
Line itemUnitQ3 FY20232023-09-30Q4 FY20232023-12-31Q1 FY20242024-03-31Q2 FY20242024-06-30Q3 FY20242024-09-30Q4 FY20242024-12-31Q1 FY20252025-03-31Q2 FY20252025-06-30Q3 FY20252025-09-30Q4 FY20252025-12-31Q1 FY20262026-03-31Q2 FY20262026-06-30
Operating cash flow$m81.6Operating cash flow, Q3 FY2023, three months to 2023-09-30$81.6m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2024-11-08, accession 0000950170-24-123804. Derived: 9-month figure less the 6-month figure.Report this figure66.6Operating cash flow, Q4 FY2023, three months to 2023-12-31$66.6m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure(12.3)Operating cash flow, Q1 FY2024, three months to 2024-03-31−$12.3m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure27.2Operating cash flow, Q2 FY2024, three months to 2024-06-30$27.2m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2025-08-08, accession 0000950170-25-105595. Derived: 6-month figure less the 3-month figure.Report this figure29.8Operating cash flow, Q3 FY2024, three months to 2024-09-30$29.8m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2025-11-07, accession 0001315257-25-000012. Derived: 9-month figure less the 6-month figure.Report this figure74.7Operating cash flow, Q4 FY2024, three months to 2024-12-31$74.7m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure(22.7)Operating cash flow, Q1 FY2025, three months to 2025-03-31−$22.7m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure50.5Operating cash flow, Q2 FY2025, three months to 2025-06-30$50.5m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-08-06, accession 0001315257-26-000048. Derived: 6-month figure less the 3-month figure.Report this figure49.6Operating cash flow, Q3 FY2025, three months to 2025-09-30$49.6m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2025-11-07, accession 0001315257-25-000012. Derived: 9-month figure less the 6-month figure.Report this figure45.1Operating cash flow, Q4 FY2025, three months to 2025-12-31$45.1m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure46.3Operating cash flow, Q1 FY2026, three months to 2026-03-31$46.3m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure50.0Operating cash flow, Q2 FY2026, three months to 2026-06-30$50.0m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-08-06, accession 0001315257-26-000048. Derived: 6-month figure less the 3-month figure.Report this figure
Capital expenditure$m28.7Capital expenditure, Q3 FY2023, three months to 2023-09-30$28.7m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2024-11-08, accession 0000950170-24-123804. Derived: 9-month figure less the 6-month figure.Report this figure29.2Capital expenditure, Q4 FY2023, three months to 2023-12-31$29.2m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure26.3Capital expenditure, Q1 FY2024, three months to 2024-03-31$26.3m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure17.1Capital expenditure, Q2 FY2024, three months to 2024-06-30$17.1m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2025-08-08, accession 0000950170-25-105595.Report this figure15.4Capital expenditure, Q3 FY2024, three months to 2024-09-30$15.4m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure18.6Capital expenditure, Q4 FY2024, three months to 2024-12-31$18.6m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure14.3Capital expenditure, Q1 FY2025, three months to 2025-03-31$14.3m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure12.1Capital expenditure, Q2 FY2025, three months to 2025-06-30$12.1m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2025-08-08, accession 0000950170-25-105595.Report this figure12.0Capital expenditure, Q3 FY2025, three months to 2025-09-30$12.0m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure16.6Capital expenditure, Q4 FY2025, three months to 2025-12-31$16.6m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure11.4Capital expenditure, Q1 FY2026, three months to 2026-03-31$11.4m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure12.3Capital expenditure, Q2 FY2026, three months to 2026-06-30$12.3m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-08-06, accession 0001315257-26-000048. Derived: 6-month figure less the 3-month figure.Report this figure
Dividends paid$m1.3Dividends paid, Q3 FY2023, three months to 2023-09-30$1.3m. XBRL concept us-gaap:PaymentsOfDividends. 10-Q filed 2024-11-08, accession 0000950170-24-123804. Derived: 9-month figure less the 6-month figure.Report this figure1.2Dividends paid, Q4 FY2023, three months to 2023-12-31$1.2m. XBRL concept us-gaap:PaymentsOfDividends. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure1.5Dividends paid, Q1 FY2024, three months to 2024-03-31$1.5m. XBRL concept us-gaap:PaymentsOfDividends. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure1.6Dividends paid, Q2 FY2024, three months to 2024-06-30$1.6m. XBRL concept us-gaap:PaymentsOfDividends. 10-Q filed 2025-08-08, accession 0000950170-25-105595. Derived: 6-month figure less the 3-month figure.Report this figure1.5Dividends paid, Q3 FY2024, three months to 2024-09-30$1.5m. XBRL concept us-gaap:PaymentsOfDividends. 10-Q filed 2025-11-07, accession 0001315257-25-000012. Derived: 9-month figure less the 6-month figure.Report this figure1.3Dividends paid, Q4 FY2024, three months to 2024-12-31$1.3m. XBRL concept us-gaap:PaymentsOfDividends. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure1.6Dividends paid, Q1 FY2025, three months to 2025-03-31$1.6m. XBRL concept us-gaap:PaymentsOfDividends. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure1.6Dividends paid, Q2 FY2025, three months to 2025-06-30$1.6m. XBRL concept us-gaap:PaymentsOfDividends. 10-Q filed 2026-08-06, accession 0001315257-26-000048. Derived: 6-month figure less the 3-month figure.Report this figure1.5Dividends paid, Q3 FY2025, three months to 2025-09-30$1.5m. XBRL concept us-gaap:PaymentsOfDividends. 10-Q filed 2025-11-07, accession 0001315257-25-000012. Derived: 9-month figure less the 6-month figure.Report this figure1.7Dividends paid, Q4 FY2025, three months to 2025-12-31$1.7m. XBRL concept us-gaap:PaymentsOfDividends. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure2.2Dividends paid, Q1 FY2026, three months to 2026-03-31$2.2m. XBRL concept us-gaap:PaymentsOfDividends. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure1.6Dividends paid, Q2 FY2026, three months to 2026-06-30$1.6m. XBRL concept us-gaap:PaymentsOfDividends. 10-Q filed 2026-08-06, accession 0001315257-26-000048. Derived: 6-month figure less the 3-month figure.Report this figure
Share repurchases$m3.9Share repurchases, Q3 FY2023, three months to 2023-09-30$3.9m. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-Q filed 2024-11-08, accession 0000950170-24-123804. Derived: 9-month figure less the 6-month figure.Report this figure10.3Share repurchases, Q4 FY2023, three months to 2023-12-31$10.3m. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure6.9Share repurchases, Q1 FY2024, three months to 2024-03-31$6.9m. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure32.2Share repurchases, Q2 FY2024, three months to 2024-06-30$32.2m. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-Q filed 2025-08-08, accession 0000950170-25-105595. Derived: 6-month figure less the 3-month figure.Report this figure10.4Share repurchases, Q3 FY2024, three months to 2024-09-30$10.4m. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-Q filed 2025-11-07, accession 0001315257-25-000012. Derived: 9-month figure less the 6-month figure.Report this figure1.3Share repurchases, Q4 FY2024, three months to 2024-12-31$1.3m. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure19.1Share repurchases, Q1 FY2025, three months to 2025-03-31$19.1m. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure10.1Share repurchases, Q2 FY2025, three months to 2025-06-30$10.1m. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-Q filed 2026-08-06, accession 0001315257-26-000048. Derived: 6-month figure less the 3-month figure.Report this figure4.1Share repurchases, Q3 FY2025, three months to 2025-09-30$4.1m. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-Q filed 2025-11-07, accession 0001315257-25-000012. Derived: 9-month figure less the 6-month figure.Report this figure4.9Share repurchases, Q4 FY2025, three months to 2025-12-31$4.9m. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-K filed 2026-02-26, accession 0001315257-26-000012. Derived: 12-month figure less the 9-month figure.Report this figure29.0Share repurchases, Q1 FY2026, three months to 2026-03-31$29.0m. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure14.9Share repurchases, Q2 FY2026, three months to 2026-06-30$14.9m. XBRL concept us-gaap:PaymentsForRepurchaseOfCommonStock. 10-Q filed 2026-08-06, accession 0001315257-26-000048. Derived: 6-month figure less the 3-month figure.Report this figure

Shares

Diluted shares (weighted)19.13m, Q2 FY2026
Koppers Holdings Inc., shares, quarterly
Line itemUnitQ3 FY20222022-09-30Q1 FY20232023-03-31Q2 FY20232023-06-30Q3 FY20232023-09-30Q1 FY20242024-03-31Q2 FY20242024-06-30Q3 FY20242024-09-30Q1 FY20252025-03-31Q2 FY20252025-06-30Q3 FY20252025-09-30Q1 FY20262026-03-31Q2 FY20262026-06-30
Diluted shares (weighted)m shares21.1Diluted shares (weighted), Q3 FY2022, three months to 2022-09-3021,085,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2023-11-03, accession 0000950170-23-058640.Report this figure21.4Diluted shares (weighted), Q1 FY2023, three months to 2023-03-3121,385,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2024-05-03, accession 0000950170-24-052678.Report this figure21.4Diluted shares (weighted), Q2 FY2023, three months to 2023-06-3021,351,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2024-08-08, accession 0000950170-24-093561.Report this figure21.7Diluted shares (weighted), Q3 FY2023, three months to 2023-09-3021,659,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2024-11-08, accession 0000950170-24-123804.Report this figure21.9Diluted shares (weighted), Q1 FY2024, three months to 2024-03-3121,909,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2025-05-09, accession 0000950170-25-067733.Report this figure21.6Diluted shares (weighted), Q2 FY2024, three months to 2024-06-3021,559,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2025-08-08, accession 0000950170-25-105595.Report this figure21.0Diluted shares (weighted), Q3 FY2024, three months to 2024-09-3020,961,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure20.4Diluted shares (weighted), Q1 FY2025, three months to 2025-03-3120,369,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure20.2Diluted shares (weighted), Q2 FY2025, three months to 2025-06-3020,235,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure20.2Diluted shares (weighted), Q3 FY2025, three months to 2025-09-3020,212,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2025-11-07, accession 0001315257-25-000012.Report this figure20.1Diluted shares (weighted), Q1 FY2026, three months to 2026-03-3120,122,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2026-05-08, accession 0001315257-26-000038.Report this figure19.1Diluted shares (weighted), Q2 FY2026, three months to 2026-06-3019,128,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure

Shares outstanding: 18.91mShares outstanding, period not labelled, at 2026-07-3118,911,568 shares. XBRL concept dei:EntityCommonStockSharesOutstanding. 10-Q filed 2026-08-06, accession 0001315257-26-000048.Report this figure at Jul 31, 2026, from the cover of the 10-Q filed Aug 6, 2026.

Source: SEC EDGAR, XBRL company facts. Last ingested by Listed: Oct 24, 2026, 15:36 ET. Listed shows no prices and gives no investment advice.