Koppers Holdings Inc. (KOP) SEC filings and CIK.
KOP’s SEC Central Index Key (CIK) is 0001315257, or 1315257 without leading zeros. The SEC’s ticker file lists it as Koppers Holdings Inc..
- Ticker
- KOP
- CIK
- 0001315257
- Other tickers
- None
- Insider transactions, Q3 2026
- 8
Insider trading
In Q3 2026, insiders at Koppers Holdings Inc. reported 8 non-derivative transactions on 10 Forms 3, 4 and 5, including 0 open-market purchases and 7 sales. See every KOP insider transaction →
Recent filings we observed
| Filed | Form | Accession |
|---|---|---|
| 2026-11-06 | 10-Q | 0001315257-26-000058 |
| 2026-11-06 | 8-K | 0001315257-26-000056 |
Get KOP SEC data through the API
curl "https://sec-api.dev/api/v1/filings?cik=1315257&limit=10" \
-H "Authorization: Bearer $SEC_API_KEY"curl "https://sec-api.dev/api/v1/companies/1315257" \
-H "Authorization: Bearer $SEC_API_KEY"curl "https://sec-api.dev/api/v1/facts/1315257?taxonomy=us-gaap&concept=Revenues&limit=10" \
-H "Authorization: Bearer $SEC_API_KEY"Ticker to CIK API · SEC filings API · Koppers Holdings Inc. on SEC.gov
Questions
What is KOP’s CIK number?
KOP’s SEC Central Index Key (CIK) is 0001315257, or 1315257 without leading zeros. The SEC’s ticker file lists it as Koppers Holdings Inc..
How do I find Koppers Holdings Inc.’s 10-K?
Request /api/v1/filings?cik=1315257&form=10-K, or open the company’s EDGAR page and filter by 10-K. Foreign issuers file 20-F or 40-F instead.
Plain-text version for agents and LLMs: /companies/kop.md
Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.