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ADTRAN Holdings, Inc. (ADTN) reporting calendar

ADTRAN Holdings, Inc. files periodic reports with the SEC as ADTN on Nasdaq. Atlas tracks 36 filed reports for this issuer, each linked to its original EDGAR accession.

Next window
28 Jul 2026 – 23 Aug 2026
Latest report
10-Q
Period ended
31 Mar 2026
Filed
5 May 2026
Reports on record
36

How this window is derived. Derived from this issuer's own filing history: 9 periods at a median 91-day cadence, filed a median 41 days after period end. The SEC does not publish forward reporting dates and Atlas does not estimate one.

Open ADTN market profile Latest filing on SEC EDGAR ↗ All Nasdaq reporting dates

Filed periodic reports

FormPeriod endedFiledLagSEC accession
10-Q31 Mar 20265 May 202635 days0001193125-26-205276
10-K31 Dec 202526 Feb 202657 days0001193125-26-073878
10-Q30 Sep 20254 Nov 202535 days0001193125-25-264157
10-Q30 Jun 20255 Aug 202536 days0000950170-25-102561
10-Q31 Mar 202520 May 202550 days0000950170-25-075374
10-K31 Dec 20243 Mar 202562 days0000950170-25-031056
10-Q30 Sep 202412 Nov 202443 days0000950170-24-125685
10-Q30 Jun 20249 Aug 202440 days0000950170-24-094602
10-Q31 Mar 202410 May 202440 days0000950170-24-057628
10-K31 Dec 202315 Mar 202475 days0000950170-24-032089
10-Q30 Sep 20239 Nov 202340 days0000950170-23-062173
10-Q30 Jun 202314 Aug 202345 days0000950170-23-042449
10-Q31 Mar 202310 May 202340 days0000950170-23-020333
10-K31 Dec 20221 Mar 202360 days0000950170-23-005536
10-Q30 Sep 20229 Nov 202240 days0000950170-22-023803
10-Q30 Jun 20225 Aug 202236 days0000950170-22-015058
10-Q31 Mar 20226 May 202236 days0000950170-22-008077
10-K31 Dec 202125 Feb 202256 days0000950170-22-002054
10-Q30 Sep 20215 Nov 202136 days0000950170-21-003219
10-Q30 Jun 20216 Aug 202137 days0001564590-21-042027
10-Q31 Mar 20216 May 202136 days0001564590-21-025123
10-K31 Dec 202026 Feb 202157 days0001564590-21-009423
10-Q30 Sep 20206 Nov 202037 days0001564590-20-052017
10-Q30 Jun 20207 Aug 202038 days0001564590-20-038237
10-Q31 Mar 20208 May 202038 days0001564590-20-023537
10-K31 Dec 201925 Feb 202056 days0001564590-20-006425
10-Q30 Sep 20195 Nov 201936 days0001564590-19-040490
10-Q30 Jun 201920 Sep 201982 days0001564590-19-035143
10-Q31 Mar 20197 May 201937 days0001564590-19-016264
10-K31 Dec 201828 Feb 201959 days0001564590-19-005179
10-Q30 Sep 20186 Nov 201837 days0001564590-18-027351
10-Q30 Jun 20183 Aug 201834 days0001564590-18-019154
10-Q31 Mar 20189 May 201839 days0001564590-18-012467
10-K31 Dec 201723 Feb 201854 days0001564590-18-003019
10-Q30 Sep 20177 Nov 201738 days0001564590-17-022183
10-Q30 Jun 20174 Aug 201735 days0001564590-17-015623

Source: SEC EDGAR company submissions for CIK 0000926282. Atlas publishes filed facts only. The SEC does not publish forward reporting dates, so no announced future date is claimed here.