3Suppliers
12Customers
1Debt Items
9Related Chains

Source-Backed Evidence Depth

Koppers Holdings Inc. (KOP) is shown with relationship data already present in ChainSifter's database. Counts below come from stored supply-chain records and filing/source URLs where available; missing source URLs are not filled in or estimated.

17Total relationships
2Distinct source URLs
5High confidence
0.707Average confidence
2026-09-13Latest database update
ChainSifter does not infer unreported suppliers, customers, ownership, acquisitions, debt exposure, revenue dependency, or future supply-chain events on this public page.

Koppers Holdings Inc. Suppliers

TickerNameConfidenceEvidence
TANGSHAN-IRON-STEEL-GROUP-CO-LTD TANGSHAN-IRON-STEEL-GROUP-CO-LTD 80% In July 2024, Koppers and Tangshan Iron & Steel Group Co. Ltd. (TISCO) signed an agreement to effectuate the ultimate liquidation of Koppers (China) Carbon & Chemical Company Limit
FMC FMC Corporation 72% Reciprocal relationship from FMC graph: Reciprocal relationship from KOP graph: Reciprocal relationship from FMC graph: r sustainability goals annually in our sustainability report and CDP disclosure…
KOPPERS-INC KOPPERS-INC 70% Koppers Holdings Inc. depends on the dividends from the earnings of Koppers Inc. and its subsidiaries to generate the funds necessary to meet its financial obligations

Koppers Holdings Inc. Customers

TickerNameConfidenceEvidence
CLASS-I-RAILROADS CLASS-I-RAILROADS 90% Through our RUPS business, we believe that we are the largest supplier of railroad crossties to the Class I railroads in North America
TEN-LARGEST-LUMBER-TREATING-COMPANIES-IN-THE-UNI TEN-LARGEST-LUMBER-TREATING-COMPANIES-IN-THE-UNI 90% PC supplies the ten largest lumber treating companies in the United States, the largest treated wood market in the world, in addition to four of the five largest lumber treating companies in Canada.
BROWN-WOOD-PRESERVING-COMPANY-INC BROWN-WOOD-PRESERVING-COMPANY-INC 62% osures. 49 Koppers Holdings Inc. 2024 Annual Report 3. Acquisitions, Divestitures and Discontinued Operations Acquisition – On April 1, 2024, we completed our acquisition of substantially all of the …
CHEMICAL-COMPANY-LIMITED CHEMICAL-COMPANY-LIMITED 62% assets acquired 82.2 Accounts payable and accrued liabilities 3.1 Current operating lease liabilities 1.1 Operating lease liabilities 1.3 Fair value of liabilities assumed 5.5 Goodwill $ 25.3 (1) The…
DOMESTIC-ENVIRONMENTAL-MATTERS-KOPPERS-INC DOMESTIC-ENVIRONMENTAL-MATTERS-KOPPERS-INC 62% als and Chemicals (CMC). Our reportable segments contain multiple aggregated business units since management believes the long-term financial performance of these business units is affected by simila…
INDEMNITY-BEAZER-LIMITED INDEMNITY-BEAZER-LIMITED 62% als and Chemicals (CMC). Our reportable segments contain multiple aggregated business units since management believes the long-term financial performance of these business units is affected by simila…
KOPPERS-HOLDINGS-INC-KOPPERS-HOLDINGS-INC KOPPERS-HOLDINGS-INC-KOPPERS-HOLDINGS-INC 62% Liquidity and Capital Resources As of March 31, 2026, liquidity from our Credit Facility and cash on hand was approximately $386 million. Our Credit Facility is described in Note 11 – Debt. Our need …
KOPPERS-INC-KOPPERS-HOLDINGS-INC KOPPERS-INC-KOPPERS-HOLDINGS-INC 62% als and Chemicals (CMC). Our reportable segments contain multiple aggregated business units since management believes the long-term financial performance of these business units is affected by simila…
RAIN-CARBON-INC RAIN-CARBON-INC 62% have seen significant amounts of smelting capacity idled or closed over the last several years. In the United States, our primary coal tar raw material supply contracts have remaining terms ranging f…
STEEL-GROUP-CO-LTD STEEL-GROUP-CO-LTD 62% assets acquired 82.2 Accounts payable and accrued liabilities 3.1 Current operating lease liabilities 1.1 Operating lease liabilities 1.3 Fair value of liabilities assumed 5.5 Goodwill $ 25.3 (1) The…
VIRGIN-MEDIA-LIMITED VIRGIN-MEDIA-LIMITED 62% als and Chemicals (CMC). Our reportable segments contain multiple aggregated business units since management believes the long-term financial performance of these business units is affected by simila…
VMI Valmont Industries, Inc. 62% Reciprocal relationship from VMI graph: Reciprocal relationship from KOP graph: als and Chemicals (CMC). Our reportable segments contain multiple aggregated business units since management believes t…

Koppers Holdings Inc. Debt Obligations

InstrumentDescriptionConfidenceEvidence
KOP-DEBT Debt stack $936.6M 90% Market cache reports total debt of $936.6M.

Koppers Holdings Inc. Acquisitions

No acquisitions on recordNo completed or pending acquisitions found in our database for Koppers Holdings Inc..

Koppers Holdings Inc. Ownership

HolderNameConfidenceEvidence
KOP-OWNER-BLACKROCK-INC BlackRock, Inc. 90% 13F overlay lists BlackRock, Inc. as top holder; 207 tracked holders.

Koppers Holdings Inc. Extended Supply Chain Network

TickerNameChain IndexHopsRelationship Types
ROG Rogers Corporation 100.00 2
VMI Valmont Industries, Inc. 100.00 1 ['customer']
FTI TechnipFMC plc 50.00 2
MEXICO MEXICO 50.00 2
CPB The Campbell's Company 50.00 2
BIOX Bioceres Crop Solutions Corp. 50.00 2
BHF Brighthouse Financial, Inc. 50.00 2
NRUC National Rural Utilities Cooper 50.00 2
FMC FMC Corporation 36.29 1 ['supplier']
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KOP
Unlock KOP Supply Chain Data
Verified relationships include:
TANGSHAN-IRON-STEEL-GROUP-CO-LTDTANGSHAN-IRON-STEEL-GROUP…Supplier80%
FMCFMC CorporationSupplier72%
CLASS-I-RAILROADSCLASS-I-RAILROADSCustomer90%
TEN-LARGEST-LUMBER-TREATING-COMPANIES-IN-THE-UNITEN-LARGEST-LUMBER-TREATI…Customer90%
+13 more relationships locked
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