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Koppers Holdings Inc. — Investor Relations & Filings

Ticker · KOP ISIN · US50060P1066 US Manufacturing
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Filings indexed 1,539 across all filing types
Latest filing 2023-05-08 Director's Dealing
Country US United States of America
Listing US KOP

About Koppers Holdings Inc.

https://www.koppers.com/

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
FORM 4 SUBMISSION
Director's Dealing
2023-05-08 English
FORM 4 SUBMISSION
Director's Dealing
2023-05-08 English
10-Q
Interim / Quarterly Report Q1 2023
2023-05-05 English
8-K
Declaration of Voting Results & Voting Rights Announcements Classification · 95% confidence The document is a Form 8-K filed with the SEC, which is a current report used to announce major events. The content includes results of operations (a press release on Q1 2023 results) and detailed voting results from the Annual Meeting of Shareholders held on May 4, 2023. The voting results cover election of directors, advisory votes on executive compensation, and ratification of the auditor appointment. The document is not the full annual report or earnings release itself but a current report disclosing these events and voting outcomes. The detailed voting results correspond to a Declaration of Voting Results filing. The presence of voting results and shareholder meeting outcomes is the key indicator. Therefore, the document is best classified as Declaration of Voting Results & Voting Rights Announcements (DVA). The document length (6417 characters) supports it being a full report of voting results rather than a brief announcement or proxy solicitation. Confidence is high due to explicit voting data and meeting details.
2023-05-05 English
8-K/A
Board/Management Information Classification · 95% confidence The document is a Form 8-K/A (amendment to a Current Report) filed with the SEC, reporting the appointment of a director to specific board committees. It details changes in the company's board composition and committee assignments. There is no financial data or report attached, and the document is focused on management/board changes. According to the filing definitions, announcements of changes in the company's board or senior management fall under Board/Management Information (MANG). The document length is 3507 characters, which is short and consistent with a regulatory announcement rather than a full report. Therefore, the correct classification is MANG with high confidence.
2023-05-04 English
FORM 4 SUBMISSION
Director's Dealing
2023-05-01 English

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