General In this report, unless otherwise noted or the context otherwise requires, (i) the term Koppers, Koppers Holdings, the Company, we or us refers to Koppers Holdings Inc. and its consolidated subsidiaries, (ii) the term KH refers to Koppers Holdings Inc. and not any of its subsidiaries and (iii) the term KI refers to Koppers Inc. and not any of its subsidiaries. Koppers Inc. is a wholly-owned subsidiary of Koppers Holdings Inc. Koppers Holdings Inc. has substantially no operations independe...
Q2 FY2026 — expected 2026-08-07
| Filed | Period | Accession | Source | Full Text |
|---|---|---|---|---|
| 2026-02-26 | 2025-12-31 | 0001315257-26-000012 | EDGAR | 54K words |
| 2025-02-27 | 2024-12-31 | 0000950170-25-028542 | EDGAR | — |
| 2024-02-28 | 2023-12-31 | 0000950170-24-021787 | EDGAR | — |
| 2023-02-27 | 2022-12-31 | 0000950170-23-004546 | EDGAR | — |
| 2022-02-23 | 2021-12-31 | 0001564590-22-006039 | EDGAR | — |
| 2021-02-24 | 2020-12-31 | 0001564590-21-007979 | EDGAR | — |
| 2020-02-27 | 2019-12-31 | 0001564590-20-006973 | EDGAR | — |
| 2019-03-01 | 2018-12-31 | 0001564590-19-005736 | EDGAR | — |
| 2018-02-27 | 2017-12-31 | 0001564590-18-003507 | EDGAR | — |
| 2017-02-24 | 2016-12-31 | 0001564590-17-002413 | EDGAR | — |
| Filed | Period | Accession | Source | Full Text |
|---|---|---|---|---|
| 2026-08-06 | 2026-06-30 | 0001315257-26-000048 | EDGAR | — |
| 2025-11-07 | 2025-09-30 | 0001315257-25-000012 | EDGAR | 20K words |
| 2025-08-08 | 2025-06-30 | 0000950170-25-105595 | EDGAR | — |
| 2025-05-09 | 2025-03-31 | 0000950170-25-067733 | EDGAR | — |
| 2024-11-08 | 2024-09-30 | 0000950170-24-123804 | EDGAR | — |
| 2024-08-08 | 2024-06-30 | 0000950170-24-093561 | EDGAR | — |
| 2024-05-03 | 2024-03-31 | 0000950170-24-052678 | EDGAR | — |
| 2023-11-03 | 2023-09-30 | 0000950170-23-058640 | EDGAR | — |
| 2023-08-03 | 2023-06-30 | 0000950170-23-037727 | EDGAR | — |
| 2023-05-05 | 2023-03-31 | 0000950170-23-018172 | EDGAR | — |
| 2022-11-04 | 2022-09-30 | 0000950170-22-022129 | EDGAR | — |
| 2022-08-04 | 2022-06-30 | 0001564590-22-027965 | EDGAR | — |
| Filed | Accession | Source | Full Text |
|---|---|---|---|
| 2026-08-06 | 0001315257-26-000046 | EDGAR | — |
| 2026-02-26 | 0001315257-26-000010 | EDGAR | 7K words |
| 2026-01-09 | 0001315257-26-000004 | EDGAR | — |
| 2025-11-07 | 0001315257-25-000010 | EDGAR | — |
| 2025-11-05 | 0001315257-25-000006 | EDGAR | — |
| 2025-08-08 | 0000950170-25-105486 | EDGAR | — |
| 2025-06-18 | 0000950170-25-087681 | EDGAR | — |
| 2025-05-29 | 0000950170-25-078597 | EDGAR | — |
| 2025-05-09 | 0000950170-25-067521 | EDGAR | — |
| 2025-02-27 | 0000950170-25-028398 | EDGAR | — |
163 total filings indexed. 131 additional filings (S-1, DEF 14A, etc.) View all (JSON) · SEC EDGAR
| CIK | 0001315257 |
| Ticker | KOP |
| Exchange | NYSE |
| SIC | 2400: Lumber & Wood Products (No Furniture) |
| Incorporated | PA |
| Website | https://www.koppers.com |
| Listed | 2006-02-01 |
This is a static snapshot. For live, structured JSON with cryptographic provenance chain:
MCP (recommended for AI): claude mcp add origin --transport http https://origin.rootz.global/mcp
Try it — paste this into your AI:
Works in ChatGPT, Claude, Gemini, or any AI. Free, structured, cryptographically signed — ~500 tokens vs 130,000 scraping an IR site.
claude mcp add origin --transport http https://origin.rootz.global/mcpGET https://origin.rootz.global/api/company/KOP (~200 tokens, structured JSON with cryptographic provenance)