KOPKoppers Holdings Inc.
$44.27+68% 1Y
$44.27
$26.1652 weeks$52.38
KOP in its own filings
Nothing in KOP's filing record raises a hard flag: no restatement, late filing, bankruptcy or delisting notice, and no auditor change next to one. That is the common case, not a distinction.
344
Events found in the filings · across 2,026 filings · the record starts in 2005
- Hard flags
- none
Hard flags
- Most recent filing
- Aug 6, 2026
Most recent filing · Form 10-Q
- Record starts
- May 20, 2005
Record starts · the earliest filing Ryufin holds for this name
Details›
- Next results filingsame week as a year ago
- expected around Nov 6, 2026
- Change in certifying accountanthistorical
- 2016-03-29
- Material impairment2 occurrences
- 2016-01-13
- SEC comment-letter activity34 occurrences
- 2023-04-28
SEC EDGAR submissions index and 8-K item codes; 4.02 and 1.03 items are confirmed against the filing text.
What the company said
The company's own words from its current reports to the SEC, newest first
- May 11, 2026On May 11, 2026, Koppers Holdings Inc. (the “Company” or “Koppers”) announced that Eric D. Brenner has been elected by the Company’s Board of Directors (the “Board”) as the Company’s Chief Financial Officer and Treasurer, in which position he will serve as the Company’s principal financial officer, effective May 26 …Director or officer change · Form 8-K
- May 8, 2026On May 8, 2026, the Company announced that it has made a conditional decision to discontinue distillation and chemical manufacturing operations at its facility in Stickney, Illinois, subject to the satisfaction of any bargaining obligations that might exist with the union that represents certain employees at that …Earnings release · Form 8-K
- May 7, 2026Emerging growth company o If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o.Director or officer change · Form 8-K/A
- Mar 18, 2026Emerging growth company o If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o Explanatory Note This amended Current …Director or officer change · Form 8-K/A
- Jan 9, 2026On January 5, 2026, Koppers Holdings Inc. (the “Company” or “Koppers”) and Jimmi Sue Smith agreed that Ms. Smith would retire from her position as the Company’s Chief Financial Officer effective January 5, 2026.Director or officer change · Form 8-K
- Dec 3, 2025Emerging growth company o If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o Explanatory Note This amended Current …Exit or disposal costs (restructuring) · Form 8-K/A
- Nov 5, 2025On November 5, 2025, the Board of Directors (the “Board”) of Koppers Holdings Inc. (the “Company”) increased the size of the Board from eight to nine directors and elected Laura Posadas as a director of the Company.Director or officer change · Form 8-K
Quoted from SEC EDGAR filings. A current report is filed within four business days of the event it describes.
opening the record…
Specialty Chemicals
Ranks #22 of 33 by RyuScore