EdgarLookup

ADTRAN Holdings, Inc. — 10-K Filings

28 10-K filings on record

This page lists all 10-K filings submitted to the SEC by ADTRAN Holdings, Inc. (ADTN), sorted by most recent first. Each row links to the full filing on EdgarLookup. ADTRAN Holdings, Inc. has filed 28 10-K documents with the SEC since 2017. To view all SEC filings by ADTRAN Holdings, Inc., see the full filings list.

Overview All Filings Financials Insiders
All 10-K 10-K/A 10-K405 10-Q 10-Q/A 11-K 11-K/A 144 15-12G 25-NSE 3 3/A 4 4/A 425 5 8-K 8-K/A 8-K12B ARS ARS/A CORRESP CT ORDER DEF 14A DEFA14A DEFM14A DEFR14A EFFECT NT 10-K NT 10-Q PRE 14A S-3 S-3ASR S-8 S-8 POS SC 13D SC 13D/A SC 13G SC 13G/A SC TO-I SC TO-I/A SCHEDULE 13G SCHEDULE 13G/A SD UPLOAD
Form Description Accession Number Filed Period
10-K 10-K 0001193125-26-073878 Feb 26, 2026 Dec 31, 2025
10-K 10-K 0000950170-25-031056 Mar 3, 2025 Dec 31, 2024
10-K 10-K 0000950170-24-032089 Mar 15, 2024 Dec 31, 2023
10-K 10-K 0000950170-23-005536 Mar 1, 2023 Dec 31, 2022
10-K 10-K 0000950170-22-002054 Feb 25, 2022 Dec 31, 2021
10-K 10-K 0001564590-21-009423 Feb 26, 2021 Dec 31, 2020
10-K 10-K 0001564590-20-006425 Feb 25, 2020 Dec 31, 2019
10-K 10-K 0001564590-19-005179 Feb 28, 2019 Dec 31, 2018
10-K 10-K 0001564590-18-003019 Feb 23, 2018 Dec 31, 2017
10-K 10-K 0001564590-17-002423 Feb 24, 2017 Dec 31, 2016
10-K FORM 10-K 0001193125-16-475816 Feb 24, 2016 Dec 31, 2015
10-K FORM 10-K 0001193125-15-059743 Feb 24, 2015 Dec 31, 2014
10-K 10-K 0001193125-14-071988 Feb 27, 2014 Dec 31, 2013
10-K 10-K 0001193125-13-082523 Feb 28, 2013 Dec 31, 2012
10-K FORM 10-K 0001193125-12-089158 Feb 29, 2012 Dec 31, 2011
10-K FORM 10-K 0000950123-11-018429 Feb 25, 2011 Dec 31, 2010
10-K FORM 10-K 0000950123-10-017565 Feb 26, 2010 Dec 31, 2009
10-K FORM 10-K 0001193125-09-040626 Feb 27, 2009 Dec 31, 2008
10-K FORM 10-K 0001193125-08-041981 Feb 28, 2008 Dec 31, 2007
10-K FORM 10-K 0001193125-07-042139 Feb 28, 2007 Dec 31, 2006
10-K FORM 10-K 0001193125-06-046030 Mar 6, 2006 Dec 31, 2005
10-K FOR THE FISCAL YEAR ENDED DECEMBER 31, 2004 0001193125-05-047985 Mar 11, 2005 Dec 31, 2004
10-K FOR THE PERIOD ENDED DECEMBER 31, 2003 0001193125-04-040535 Mar 12, 2004 Dec 31, 2003
10-K FORM 10-K 0000931763-03-000598 Mar 20, 2003 Dec 31, 2002
10-K FORM 10-K 0000931763-01-000640 Mar 30, 2001 Dec 31, 2000
10-K ANNUAL REPORT ON FORM 10-K 0000926282-99-000002 Mar 31, 1999 Dec 31, 1998
10-K FORM 10-K FOR FISCAL YEAR END 12/31/97 0000926282-98-000003 Mar 31, 1998 Dec 31, 1997
10-K FORM 10-K FOR FISCAL YEAR END 12/31/96 0000931763-97-000434 Mar 31, 1997 Dec 31, 1996