ATLAS / Macro Radar / Reporting / KOP

Koppers Holdings Inc. (KOP) reporting calendar

Koppers Holdings Inc. files periodic reports with the SEC as KOP on NYSE. Atlas tracks 45 filed reports for this issuer, each linked to its original EDGAR accession.

Next window
29 Jul 2026 – 18 Aug 2026
Latest report
10-Q
Period ended
31 Mar 2026
Filed
8 May 2026
Reports on record
45

How this window is derived. Derived from this issuer's own filing history: 9 periods at a median 91-day cadence, filed a median 39 days after period end. The SEC does not publish forward reporting dates and Atlas does not estimate one.

Open KOP market profile Latest filing on SEC EDGAR ↗ All NYSE reporting dates

Filed periodic reports

FormPeriod endedFiledLagSEC accession
10-Q31 Mar 20268 May 202638 days0001315257-26-000038
10-K31 Dec 202526 Feb 202657 days0001315257-26-000012
10-Q30 Sep 20257 Nov 202538 days0001315257-25-000012
10-Q30 Jun 20258 Aug 202539 days0000950170-25-105595
10-Q31 Mar 20259 May 202539 days0000950170-25-067733
10-K31 Dec 202427 Feb 202558 days0000950170-25-028542
10-Q30 Sep 20248 Nov 202439 days0000950170-24-123804
10-Q30 Jun 20248 Aug 202439 days0000950170-24-093561
10-Q31 Mar 20243 May 202433 days0000950170-24-052678
10-K31 Dec 202328 Feb 202459 days0000950170-24-021787
10-Q30 Sep 20233 Nov 202334 days0000950170-23-058640
10-Q30 Jun 20233 Aug 202334 days0000950170-23-037727
10-Q31 Mar 20235 May 202335 days0000950170-23-018172
10-K31 Dec 202227 Feb 202358 days0000950170-23-004546
10-Q30 Sep 20224 Nov 202235 days0000950170-22-022129
10-Q30 Jun 20224 Aug 202235 days0001564590-22-027965
10-Q31 Mar 20226 May 202236 days0001564590-22-018495
10-K31 Dec 202123 Feb 202254 days0001564590-22-006039
10-Q30 Sep 20214 Nov 202135 days0001564590-21-054369
10-Q30 Jun 20216 Aug 202137 days0001564590-21-042020
10-Q31 Mar 20217 May 202137 days0001564590-21-025405
10-K31 Dec 202024 Feb 202155 days0001564590-21-007979
10-Q30 Sep 20204 Nov 202035 days0001564590-20-050220
10-Q30 Jun 20205 Aug 202036 days0001564590-20-036474
10-Q31 Mar 20207 May 202037 days0001564590-20-022489
10-K31 Dec 201927 Feb 202058 days0001564590-20-006973
10-Q30 Sep 20197 Nov 201938 days0001564590-19-041474
10-Q30 Jun 20198 Aug 201939 days0001564590-19-030584
10-Q31 Mar 20193 May 201933 days0001564590-19-015570
10-K31 Dec 20181 Mar 201960 days0001564590-19-005736
10-Q30 Sep 20188 Nov 201839 days0001564590-18-028498
10-Q30 Jun 20189 Aug 201840 days0001564590-18-020999
10-Q31 Mar 20183 May 201833 days0001564590-18-010651
10-K31 Dec 201727 Feb 201858 days0001564590-18-003507
10-Q30 Sep 20179 Nov 201740 days0001564590-17-023120
10-Q30 Jun 20173 Aug 201734 days0001564590-17-015264
10-Q31 Mar 20178 May 201738 days0001564590-17-009432
10-K31 Dec 201624 Feb 201755 days0001564590-17-002413
10-Q30 Sep 20163 Nov 201634 days0001564590-16-027404
10-Q30 Jun 20164 Aug 201635 days0001564590-16-022745

Source: SEC EDGAR company submissions for CIK 0001315257. Atlas publishes filed facts only. The SEC does not publish forward reporting dates, so no announced future date is claimed here.