ADTRAN Holdings, Inc. — 10-K/A Filings

4 10-K/A filings on record

This page lists all 10-K/A 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 4 10-K/A 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/A	10-K/A	0000950170-25-075366	May 20, 2025	Dec 31, 2024
10-K/A	10-K/A	0000950170-23-042432	Aug 14, 2023	Dec 31, 2022
10-K/A	10-K/A	0001564590-19-035139	Sep 20, 2019	Dec 31, 2018
10-K/A	FORM 10-K/A	0001193125-12-315986	Jul 26, 2012	Dec 31, 2011