Koppers Holdings Inc. — Investor Relations & Filings
Koppers Holdings Inc. is an integrated global provider of treated wood products, wood preservation chemicals, and carbon compounds. The company specializes in wood preservation technology, manufacturing pressure-treated products such as railroad crossties and utility poles for the railroad, utility, construction, and infrastructure industries. It also distills coal tar to produce carbon materials and chemicals, including carbon pitch and creosote. Koppers provides complementary services such as utility infrastructure maintenance, inspection, and environmentally responsible end-of-life management for treated wood. The company focuses on developing sustainable solutions supported by research and innovation.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| 8-K - Koppers Holdings Inc. (0001315257) (Filer) | 2026-05-11 | English | |
| 10-Q - Koppers Holdings Inc. (0001315257) (Filer) | 2026-05-08 | English | |
| 8-K - Koppers Holdings Inc. (0001315257) (Filer) | 2026-05-08 | English | |
| S-8 - Koppers Holdings Inc. (0001315257) (Filer) | 2026-05-08 | English | |
| 8-K/A - Koppers Holdings Inc. (0001315257) (Filer) | 2026-05-07 | English | |
| SCHEDULE 13G/A - Koppers Holdings Inc. (0001315257) (Subject) | 2026-03-27 | English |
Browse filings by year
17 yearsMarket data
Market data not available
Price history
Peer group · Manufacture of basic chemicals
| Company | Ticker | Country | Sector |
|---|---|---|---|
|
Charbone Hydrogen Corporation
Integrated developer and producer of green hydrogen and str…
|
CH | CA | Manufacturing |
|
CHCIW
Develops and produces electronic chemicals, specialty mater…
|
1727 | TW | Manufacturing |
|
Chemcon Speciality Chemicals Limited
Produces pharmaceutical intermediates and oilfield chemical…
|
CHEMCON | IN | Manufacturing |
|
Chemcrux Enterprises Limited
Manufactures bulk drug intermediates and specialty chemical…
|
540395 | IN | Manufacturing |
|
Chemfab Alkalis Ltd
Chlor-alkali producer of caustic soda and co-products using…
|
CHEMFAB | IN | Manufacturing |
|
CHEMICAL COMPANY OF MALAYSIA BERHAD
A leading chemicals company manufacturing and supplying ind…
|
— | MY | Manufacturing |
|
Chemiesynth (Vapi) Limited
Manufactures specialty chemicals and intermediates for life…
|
539230 | IN | Manufacturing |
|
Chemours Co
A global provider of performance chemicals and advanced mat…
|
CC | US | Manufacturing |
|
Chemtrade Logistics Income Fund
Diversified enterprise supplying essential industrial chemi…
|
CHE.UN | CA | Manufacturing |
|
CHEMX MATERIALS LIMITED
Develops high-purity alumina and manganese for the global e…
|
CMX | AU | Manufacturing |
Koppers Holdings Inc. via the API
Pull this company's filings, identifiers, and metadata as JSON or Markdown. Authenticate with your API key, then query by company ID, ISIN, or LEI. Full schema documented in the OpenAPI spec.
Endpoints
| GET | /api/companies/32745/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=32745 | Paginated list of all filings (filterable by type, date, language) |
| GET | /api/filings/{id}/ | Single filing — metadata, document URL, processing status |
| GET | /api/filings/{id}/markdown/ | Filing content as Markdown (PDF → text/tables/figures) |
| GET | /api/isins/?company=32745 | All ISINs registered to this company |
| GET | /api/filing-types/ | Reference: every filing-type code + category |
cURL
$ curl https://api.financialreports.eu/api/filings/?company=32745 \ -H "x-api-key: $FR_API_KEY" \ -H "Accept: application/json"
Python
import requests r = requests.get( "https://api.financialreports.eu/api/filings/", params={"company": 32745}, headers={"x-api-key": API_KEY}, ) filings = r.json()["results"]
MCP server
// MCP server URL https://mcp.financialfilings.com/mcp // Once connected, the LLM can query this company directly: "Pull the latest 5 filings for Koppers Holdings Inc. (id: 32745)"
Report missing filing
Can't find a specific document? Let us know and we'll add it within 24 hours.