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CIENA CORP — 10-K Filings

29 10-K filings on record

This page lists all 10-K filings submitted to the SEC by CIENA CORP (CIEN), sorted by most recent first. Each row links to the full filing on EdgarLookup. CIENA CORP has filed 29 10-K documents with the SEC since 2020. To view all SEC filings by CIENA CORP, see the full filings list.

Overview All Filings Financials Insiders
All 10-K 10-K/A 10-Q 10-Q/A 144 25 3 3/A 4 4/A 424B3 424B4 424B5 425 8-A12B 8-A12G 8-K 8-K/A ARS CERTNYS CORRESP CT ORDER DEF 14A DEFA14A EFFECT FWP POS AM POSASR PRE 14A PRER14A REGDEX REGDEX/A S-1 S-1/A S-3 S-3/A S-3ASR S-3MEF S-4 S-4/A S-8 S-8 POS SC 13D SC 13D/A SC 13G SC 13G/A SC TO-C SC TO-I SC TO-I/A SCHEDULE 13G/A SD UPLOAD
Form Description Accession Number Filed Period
10-K 10-K 0001628280-25-056698 Dec 12, 2025 Nov 1, 2025
10-K 10-K 0000936395-24-000044 Dec 20, 2024 Nov 2, 2024
10-K 10-K 0000936395-23-000044 Dec 15, 2023 Oct 28, 2023
10-K 10-K 0000936395-22-000065 Dec 16, 2022 Oct 29, 2022
10-K 10-K 0000936395-21-000054 Dec 17, 2021 Oct 30, 2021
10-K 10-K 0000936395-20-000042 Dec 18, 2020 Oct 31, 2020
10-K 10-K 0000936395-19-000056 Dec 20, 2019 Oct 31, 2019
10-K 10-K 0000936395-18-000048 Dec 21, 2018 Oct 31, 2018
10-K 10-K 0000936395-17-000064 Dec 22, 2017 Oct 31, 2017
10-K 10-K 0000936395-16-000128 Dec 21, 2016 Oct 31, 2016
10-K 10-K 0000936395-15-000062 Dec 21, 2015 Oct 31, 2015
10-K 10-K 0000936395-14-000063 Dec 19, 2014 Nov 1, 2014
10-K 10-K 0000936395-13-000057 Dec 20, 2013 Oct 31, 2013
10-K 10-K 0000936395-12-000075 Dec 21, 2012 Oct 31, 2012
10-K — 0000936395-11-000009 Dec 22, 2011 Oct 31, 2011
10-K FORM 10-K 0000950123-10-115852 Dec 22, 2010 Oct 31, 2010
10-K 10-K 0000950123-09-072656 Dec 22, 2009 Oct 31, 2009
10-K 10-K 0000950133-08-004117 Dec 23, 2008 Oct 31, 2008
10-K FORM 10-K 0000950133-07-005124 Dec 27, 2007 Oct 31, 2007
10-K CIENA CORPORATION FORM 10-K 0000950133-07-000092 Jan 10, 2007 Oct 31, 2006
10-K FORM 10-K 0000950133-06-000075 Jan 12, 2006 Oct 31, 2005
10-K FORM 10-K 0000950133-04-004551 Dec 9, 2004 Oct 31, 2004
10-K FORM 10-K 0000950133-03-004259 Dec 11, 2003 Oct 31, 2003
10-K FORM 10-K 0000950133-02-004070 Dec 12, 2002 Oct 31, 2002
10-K ANNUAL REPORT 0000950133-01-503553 Dec 13, 2001 Oct 31, 2001
10-K ANNUAL REPORT PURSUANT 0000950133-00-004793 Dec 7, 2000 Oct 30, 2000
10-K FORM 10-K 0000950133-99-003877 Dec 10, 1999 Oct 31, 1999
10-K FORM 10-K 0000950133-98-004086 Dec 10, 1998 Oct 31, 1998
10-K FORM 10-K DATED OCTOBER 31, 1997 0000950133-97-004148 Dec 10, 1997 Oct 31, 1997