On the Record · Koppers
Koppers subsidiaries, as it lists them
The subsidiaries Koppers lists in its latest annual report, with the jurisdiction of each, linked to the filing.
Subsidiaries it lists
| Subsidiary | Jurisdiction |
|---|---|
| Koppers Inc. | Pennsylvania |
| Cox Wood of Alabama, LLC | Alabama |
| Koppers Delaware, Inc. | Delaware |
| Koppers World-Wide Ventures Corporation | Delaware |
| Koppers Ventures Inc. | Delaware |
| Koppers Recovery Resources LLC | Kansas |
| Koppers Performance Chemicals Inc. | New York |
| Koppers Carbon Materials LLC | Pennsylvania |
| Koppers Utility Services LLC | Pennsylvania |
| Carolina Pole Leland, Inc. | North Carolina |
| Cove City Wood Preserving, Inc. | North Carolina |
| Leland Land, LLC | North Carolina |
| Structural Woods Preserving Company | North Carolina |
| Atlantic Pole-Georgia, LLC | South Carolina |
| Atlantic Pole-Virginia, LLC | South Carolina |
| Carolina Pole, Inc. | South Carolina |
| Koppers Recovery Resources LLC | South Carolina |
| Cox Wood Preserving Company | South Carolina |
| Koppers Utility and Industrial Products Inc. | South Carolina |
| North-South Wood Preserving Company, Inc. | South Carolina |
| Ruby’s Corner, LLC | South Carolina |
| Sustainable Management Systems, LLC | South Carolina |
| Sweetwater Wood Holdings, LLC | South Carolina |
| Continental Carbon Australia Pty Ltd | Australia |
| Koppers Australia Holding Company Pty Ltd | Australia |
| Koppers Australia Pty Limited | Australia |
| Koppers Carbon Materials & Chemicals Pty Ltd | Australia |
| Koppers Wood Products Pty Ltd | Australia |
| Koppers Ashcroft Inc. | British Columbia, Canada |
| Koppers (China) Carbon & Chemical Company Limited | Peoples Republic of China |
| Koppers (Tianjin) Trading Co., Ltd. | Peoples Republic of China |
| Koppers Mauritius | Republic of Mauritius |
| Koppers Europe ApS | Denmark |
| Koppers Denmark ApS | Denmark |
| Koppers European Holdings ApS | Denmark |
| Koppers Tar Tech International ApS | Denmark |
| Koppers International B.V. | Netherlands |
| Koppers Global B.V. | Netherlands |
| Koppers Australasian B.V. | Netherlands |
| Koppers UK Holding Limited | United Kingdom |
| Koppers UK Limited | United Kingdom |
| Koppers UK Transport Limited | United Kingdom |
| Koppers UK Investment Ltd. | United Kingdom |
| Wood Protection Management LLC | Nevada |
| Wood Protection LP | Texas |
| Koppers-Nevada Limited Liability Company | Nevada |
| Timber Specialties Limited | Ontario, Canada |
| Protim Solignum Ltd. | United Kingdom |
| Protim Ltd. | Ireland |
| Koppers Sweden AB | Sweden |
| Koppers Performance Chemicals Denmark ApS | Denmark |
| Oy Koppers Finland Ab | Finland |
| Koppers Deutschland GmbH | Germany |
| Koppers Norway AS | Norway |
| Koppers Latvia SIA | Latvia |
| Koppers Performance Chemicals Australia Pty Ltd | Australia |
| Koppers Performance Chemicals New Zealand Limited | New Zealand |
| Koppers Thailand Ltd. | Thailand |
| Comercial KPC Chile Limitada | Chile |
| Koppers Performance Chemicals Brasil Comercio de Preservantes Ltda. | Brazil |
| Koppers NZ Holdings Limited | New Zealand |
From Exhibit 21 of the 10-K for 2025. Companies must list their significant subsidiaries there and may leave out smaller ones, so this is the company’s own list, not every entity it owns.
Read from Koppers’s annual reports (10-K for 2025, 10-K for 2024, 10-K for 2023) and the financial data it files with the SEC, as of 2026-02-26. Every quotation is word for word from the filing linked beside it; how these pages are built and checked. The full record is in its company data sheet.