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ADTRAN Holdings, Inc. — 11-K Filings

28 11-K filings on record

This page lists all 11-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 11-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
11-K 11-K 0000950170-25-091544 Jun 30, 2025 Dec 31, 2024
11-K 11-K 0000950170-24-078882 Jun 28, 2024 Dec 31, 2023
11-K 11-K 0000950170-23-030396 Jun 28, 2023 Dec 31, 2022
11-K 11-K 0000950170-22-012259 Jun 28, 2022 Dec 31, 2021
11-K 11-K 0001564590-21-035050 Jun 29, 2021 Dec 31, 2020
11-K 11-K 0001564590-20-031012 Jun 29, 2020 Dec 31, 2019
11-K 11-K 0001564590-19-023817 Jun 27, 2019 Dec 31, 2018
11-K 11-K 0001564590-18-016268 Jun 27, 2018 Dec 31, 2017
11-K 11-K 0001193125-17-209404 Jun 21, 2017 Dec 31, 2016
11-K FORM 11-K 0001193125-16-629816 Jun 23, 2016 Dec 31, 2015
11-K FORM 11-K 0001193125-15-221559 Jun 12, 2015 Dec 31, 2014
11-K FORM 11-K 0001193125-14-236364 Jun 13, 2014 Dec 31, 2013
11-K FORM 11-K 0001193125-13-259494 Jun 14, 2013 Dec 31, 2012
11-K FORM 11-K 0001193125-12-278442 Jun 21, 2012 Dec 31, 2011
11-K FORM 11-K 0000950123-11-058560 Jun 13, 2011 Dec 31, 2010
11-K FORM 11-K 0000950123-10-058907 Jun 17, 2010 Dec 31, 2009
11-K FORM 11-K 0001193125-09-129963 Jun 12, 2009 Dec 31, 2008
11-K FORM 11-K 0001193125-08-137426 Jun 20, 2008 Dec 31, 2007
11-K FORM 11-K 0001193125-07-141731 Jun 25, 2007 Dec 31, 2006
11-K FORM 11-K 0001193125-06-139216 Jun 29, 2006 Dec 31, 2005
11-K FORM 11-K 0001193125-05-131906 Jun 27, 2005 Dec 31, 2004
11-K FORM 11-K 0001193125-04-110262 Jun 28, 2004 Dec 31, 2003
11-K FORM 11-K 0001193125-03-013504 Jun 26, 2003 Dec 31, 2002
11-K FORM 11-K 0000931763-02-002292 Jul 1, 2002 Dec 31, 2001
11-K FORM 11-K 0000931763-01-500953 Jun 29, 2001 Dec 31, 2000
11-K FORM 11-K 0000931763-00-002272 Oct 16, 2000 Dec 30, 1999
11-K FOR FISCAL YEAR ENDED DECEMBER 30, 1998 0000931763-99-002012 Jul 2, 1999 Dec 30, 1998
11-K — 0000926282-98-000008 Jun 30, 1998 Dec 31, 1997