KOP Koppers Holdings Inc.companySEC Filings & Insider Trading Activity 2026
Latest Koppers Holdings Inc. (KOP) SEC EDGAR filings in 2026 — including the most recent 10-K annual report filed on February 26, 2026, a 10-Q quarterly report filed on November 7, 2025, an 8-K current report filed on March 18, 2026. SignalX aggregates every new 10-K annual report, 10-Q quarterly report, 8-K current report, and Form 4 insider transaction for Koppers Holdings Inc. (KOP) (SEC CIK 1315257), with AI-powered section-by-section summaries updated daily.
Latest 2026 SEC Filing Dates
AI 8-K Current Report AnalysisRecent 8-K Filings
Item 5.02: Departure/Appointment of Directors or Principal Officers
- • Treasurer Ms. Smith to separate after Interim Employment Period ending Feb 28, 2027, with transition services through that date
- • Total transition-related payments of $893,400 including $440,000 over Transition Period, $123,400 lump sum for equity awards, $330,000 target 2026 incentive
Item 2.02: Results of Operations and Financial Condition
- • Q4 and full year 2025 results announced Feb 26, 2026 via press release
- • Full financial details in Exhibit 99.1 — primary source for revenue, earnings, and guidance figures
Recent 8-K FilingsCurrent Reports
AI-powered analysis of Koppers Holdings Inc. (KOP) 8-K current reports disclosing material events.
Latest 2026 SEC Filings — 10-K, 10-Q, 8-K & Form 4
| Form | Filing Date | Period | Analysis | SEC |
|---|---|---|---|---|
8-K | Mar 18, 2026 | — | Analysis | — |
8-K | Feb 26, 2026 | — | Analysis | — |
10-K | Feb 26, 2026 | Dec 31, 2025 | — | |
8-K | Jan 9, 2026 | — | — | |
8-K | Dec 3, 2025 | — | — | |
10-Q | Nov 7, 2025 | Sep 30, 2025 | — | |
10-Q | Aug 8, 2025 | Jun 30, 2025 | — | |
10-Q | May 9, 2025 | Mar 31, 2025 | — | |
10-K | Feb 27, 2025 | Dec 31, 2024 | — | |
10-Q | Nov 8, 2024 | Sep 30, 2024 | — | |
10-Q | Aug 8, 2024 | Jun 30, 2024 | — | |
10-Q | May 3, 2024 | Mar 31, 2024 | — | |
10-K | Feb 28, 2024 | Dec 31, 2023 | — | |
10-Q | Nov 3, 2023 | Sep 30, 2023 | — | |
10-Q | Aug 3, 2023 | Jun 30, 2023 | — | |
10-Q | May 5, 2023 | Mar 31, 2023 | — | |
10-K | Feb 27, 2023 | Dec 31, 2022 | — | |
10-Q | Aug 4, 2022 | Jun 30, 2022 | — | |
10-Q | May 6, 2022 | Mar 31, 2022 | — | |
10-K | Feb 23, 2022 | Dec 31, 2021 | — | |
10-Q | Nov 4, 2021 | Sep 30, 2021 | — | |
10-Q | Aug 6, 2021 | Jun 30, 2021 | — | |
10-Q | May 7, 2021 | Mar 31, 2021 | — | |
10-K | Feb 24, 2021 | Dec 31, 2020 | — | |
10-Q | Nov 4, 2020 | Sep 30, 2020 | — |
Frequently Asked Questions
What are the latest KOP SEC filings in 2026?
Koppers Holdings Inc. (KOP) has filed a 10-K annual report on February 26, 2026, a 10-Q quarterly report on November 7, 2025, an 8-K current report on March 18, 2026 with the SEC. SignalX tracks every new SEC EDGAR filing daily, including 10-K, 10-Q, 8-K, and Form 4 insider transactions, with AI-powered summaries of key sections.
When did KOP file its most recent 10-K annual report?
Koppers Holdings Inc. (KOP) filed its most recent 10-K annual report on February 26, 2026. The 10-K includes audited financial statements, business overview, risk factors, and management discussion, all available on SignalX with AI-generated summaries and XBRL financial data.
How do I view KOP 10-Q quarterly reports?
Koppers Holdings Inc. (KOP)'s most recent 10-Q quarterly report was filed on November 7, 2025. SignalX displays every KOP 10-Q with AI-generated summaries of the MD&A (Management Discussion & Analysis) and Risk Factors sections, plus links to the original SEC EDGAR document.
What 8-K current reports has KOP filed recently?
Koppers Holdings Inc. (KOP)'s most recent 8-K was filed on March 18, 2026. 8-K filings disclose material corporate events such as earnings releases, executive changes, mergers, and other significant developments. SignalX surfaces each 8-K with item-level summaries so you can quickly see what happened.
Where can I find KOP insider trading activity (Form 4)?
SignalX aggregates every KOP Form 4 insider transaction from SEC EDGAR. Form 4 reports show when officers, directors, and 10% shareholders buy or sell company stock, with transaction code, share count, and price per share.
How often does KOP file with the SEC?
Koppers Holdings Inc. (KOP) files a 10-K annual report once per year (typically within 60 days of fiscal year-end) and 10-Q quarterly reports three times per year. 8-K current reports are filed as needed when material events occur, and Form 4 insider transaction reports are due within two business days of a trade. SignalX monitors SEC EDGAR daily to surface every new KOP filing with AI-powered analysis.
What is the difference between 10-K, 10-Q, and 8-K SEC filings?
A 10-K is a comprehensive annual report with audited financials, business overview, and risk factors. A 10-Q is a shorter quarterly report with unaudited financials and management discussion. An 8-K is a current report filed when a material event occurs — such as earnings releases, executive changes, acquisitions, or other significant developments. SignalX provides AI-generated summaries for all three filing types for Koppers Holdings Inc. (KOP).
What is KOP's SEC CIK number?
Koppers Holdings Inc. (KOP)'s SEC CIK (Central Index Key) number is 1315257. The CIK is a unique identifier assigned by the SEC to every filing entity. You can use CIK 1315257 to look up all KOP filings on SEC EDGAR, or browse them here on SignalX with AI-powered analysis.
Where can I find KOP return on equity (ROE) and financial data?
SignalX extracts XBRL financial data from Koppers Holdings Inc. (KOP) 10-K annual filings, including revenue, net income, gross profit, operating income, EPS, total assets, stockholders' equity, and operating cash flow. Return on equity (ROE) can be derived from net income divided by stockholders' equity. Multi-year financial trends are displayed in the Financial Summary table above.
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