| Form type | Sec Links | Description | Filing date | Reporting date |
|---|---|---|---|---|
| 8-K | Report | Data | 8-K | Sep 4, 2024 | Sep 4, 2024 |
| 8-K | Report | Data | 8-K | Jun 6, 2024 | Jun 6, 2024 |
| 8-K | Report | Data | 8-K | Apr 23, 2024 | Apr 22, 2024 |
| 8-K | Report | Data | 8-K | Mar 26, 2024 | Mar 21, 2024 |
| 8-K | Report | Data | 8-K | Mar 7, 2024 | Mar 7, 2024 |
| 8-K | Report | Data | 8-K | Dec 7, 2023 | Dec 7, 2023 |
| 8-K | Report | Data | 8-K | Oct 25, 2023 | Oct 24, 2023 |
| 8-K | Report | Data | 8-K | Oct 3, 2023 | Oct 2, 2023 |
| 8-K | Report | Data | 8-K | Aug 31, 2023 | Aug 31, 2023 |
| 8-K | Report | Data | 8-K | Jun 6, 2023 | Jun 6, 2023 |
| 8-K | Report | Data | 8-K | Apr 6, 2023 | Apr 6, 2023 |
| 8-K | Report | Data | 8-K | Apr 3, 2023 | Mar 30, 2023 |
| 8-K | Report | Data | 8-K | Mar 6, 2023 | Mar 6, 2023 |
| 8-K | Report | Data | 8-K | Feb 15, 2023 | Feb 10, 2023 |
| 8-K | Report | Data | 8-K | Jan 27, 2023 | Jan 26, 2023 |
| 8-K | Report | 8-K | Jan 24, 2023 | Jan 24, 2023 |
| 8-K | Report | Data | 8-K | Jan 23, 2023 | Jan 19, 2023 |
| 8-K | Report | Data | 8-K | Dec 8, 2022 | Dec 8, 2022 |
| 8-K | Report | Data | 8-K | Nov 22, 2022 | Nov 22, 2022 |
| 8-K | Report | 8-K | Sep 1, 2022 | Sep 1, 2022 |
| 8-K | Report | Data | 8-K | Jun 2, 2022 | Jun 2, 2022 |
| 8-K | Report | Data | 8-K | Apr 20, 2022 | Mar 31, 2022 |
| 8-K | Report | Data | 8-K | Mar 7, 2022 | Mar 7, 2022 |
| 8-K | Report | Data | 8-K | Feb 15, 2022 | Feb 15, 2022 |
| 8-K | Report | Data | 8-K | Jan 18, 2022 | Jan 18, 2022 |
| 8-K | Report | Data | 8-K | Jan 12, 2022 | Jan 11, 2022 |
| 8-K | Report | Data | 8-K | Jan 10, 2022 | Jan 10, 2022 |
| 8-K | Report | Data | 8-K | Dec 14, 2021 | Dec 13, 2021 |
| 8-K | Report | Data | 8-K | Dec 9, 2021 | Dec 9, 2021 |
| 8-K | Report | Data | 8-K | Nov 3, 2021 | Oct 31, 2021 |
| 8-K | Report | Data | 8-K | Sep 2, 2021 | Sep 2, 2021 |
| 8-K | Report | Data | 8-K | Jun 3, 2021 | Jun 3, 2021 |
| 8-K | Report | Data | 8-K | Apr 6, 2021 | Apr 1, 2021 |
| 8-K | Report | Data | 8-K | Mar 4, 2021 | Mar 4, 2021 |
| 8-K | Report | Data | 8-K | Dec 10, 2020 | Dec 10, 2020 |
| 8-K | Report | Data | 8-K | Sep 3, 2020 | Sep 3, 2020 |
| 8-K | Report | Data | 8-K | Jul 1, 2020 | Jun 30, 2020 |
| 8-K | Report | Data | 8-K | Jun 4, 2020 | Jun 4, 2020 |
| 8-K | Report | Data | 8-K | Apr 6, 2020 | Apr 2, 2020 |
| 8-K | Report | Data | 8-K | Mar 5, 2020 | Mar 5, 2020 |
| 8-K | Report | Data | 8-K | Jan 28, 2020 | Jan 23, 2020 |
| 8-K | Report | Data | 8-K | Dec 12, 2019 | Dec 12, 2019 |
| 8-K | Report | Data | 8-K | Oct 31, 2019 | Oct 28, 2019 |
| 8-K | Report | Data | 8-K | Oct 3, 2019 | Oct 3, 2019 |
| 8-K | Report | Data | 8-K | Sep 5, 2019 | Sep 5, 2019 |
| 8-K | Report | Data | 8-K | Aug 29, 2019 | Aug 28, 2019 |
| 8-K | Report | 8-K | Jun 6, 2019 | Jun 6, 2019 |
| 8-K | Report | 8-K | Apr 1, 2019 | Mar 28, 2019 |
| 8-K | Report | 8-K | Mar 5, 2019 | Mar 5, 2019 |
| 8-K | Report | 8-K | Dec 13, 2018 | Dec 13, 2018 |
| 8-K | Report | 8-K | Oct 18, 2018 | Oct 18, 2018 |
| 8-K | Report | 8-K | Oct 1, 2018 | Sep 28, 2018 |
| 8-K | Report | 8-K | Sep 20, 2018 | Sep 20, 2018 |
| 8-K | Report | 8-K | Sep 5, 2018 | Sep 5, 2018 |
| 8-K | Report | 8-K | Aug 30, 2018 | Aug 30, 2018 |
| 8-K | Report | 8-K | Jun 13, 2018 | Jun 13, 2018 |
| 8-K | Report | 8-K | May 31, 2018 | May 31, 2018 |
| 8-K | Report | 8-K | Apr 12, 2018 | Apr 12, 2018 |
| 8-K | Report | 8-K | Apr 5, 2018 | Apr 3, 2018 |
| 8-K | Report | 8-K | Mar 6, 2018 | Mar 6, 2018 |
| 8-K/A | Report | 8-K/A | Jan 16, 2018 | Mar 23, 2017 |
| 8-K | Report | 8-K | Dec 7, 2017 | Dec 7, 2017 |
| 8-K/A | Report | 8-K/A | Oct 30, 2017 | Aug 23, 2017 |
| 8-K | Report | 8-K | Aug 31, 2017 | Aug 31, 2017 |
| 8-K | Report | 8-K | Aug 24, 2017 | Aug 23, 2017 |
| 8-K | Report | 8-K | Aug 2, 2017 | Aug 2, 2017 |
| 8-K | Report | FORM 8-K | Jun 30, 2017 | Jun 30, 2017 |
| 8-K | Report | 8-K | Jun 15, 2017 | Jun 15, 2017 |
| 8-K | Report | 8-K | Jun 1, 2017 | Jun 1, 2017 |
| 8-K | Report | 8-K | Mar 29, 2017 | Mar 23, 2017 |
| 8-K | Report | 8-K | Mar 27, 2017 | Mar 23, 2017 |
| 8-K | Report | 8-K | Mar 8, 2017 | Mar 8, 2017 |
| 8-K | Report | 8-K | Mar 1, 2017 | Mar 1, 2017 |
| 8-K | Report | 8-K | Feb 1, 2017 | Feb 1, 2017 |
| 8-K | Report | 8-K | Jan 27, 2017 | Jan 27, 2017 |
| 8-K | Report | 8-K | Jan 24, 2017 | Jan 24, 2017 |
| 8-K | Report | 8-K | Dec 8, 2016 | Dec 8, 2016 |
| 8-K | Report | 8-K | Nov 4, 2016 | Nov 1, 2016 |
| 8-K | Report | 8-K | Sep 1, 2016 | Sep 1, 2016 |
| 8-K | Report | 8-K | Aug 5, 2016 | Aug 5, 2016 |
| 8-K | Report | 8-K | Jun 22, 2016 | Jun 21, 2016 |
| 8-K | Report | Data | 8-K | Jun 2, 2016 | Jun 2, 2016 |
| 8-K | Report | 8-K | Apr 26, 2016 | Apr 25, 2016 |
| 8-K | Report | 8-K - 2016 ANNUAL MEETING RESULTS | Mar 30, 2016 | Mar 24, 2016 |
| 8-K | Report | 8-K | Mar 3, 2016 | Mar 3, 2016 |
| 8-K | Report | 8-K | Jan 20, 2016 | Jan 20, 2016 |
| 8-K | Report | 8-K (ABL EXTENSION) | Jan 13, 2016 | Jan 8, 2016 |
| 8-K | Report | 8-K | Dec 10, 2015 | Dec 10, 2015 |
| 8-K | Report | 8-K | Nov 2, 2015 | Nov 2, 2015 |
| 8-K | Report | 8-K | Sep 3, 2015 | Sep 3, 2015 |
| 8-K | Report | 8-K | Aug 13, 2015 | Aug 13, 2015 |
| 8-K | Report | 8-K | Aug 3, 2015 | Aug 3, 2015 |
| 8-K | Report | 8-K | Jun 16, 2015 | Jun 16, 2015 |
| 8-K | Report | 8-K | Jun 4, 2015 | Jun 4, 2015 |
| 8-K | Report | 8-K | Jun 3, 2015 | Jun 3, 2015 |
| 8-K | Report | FORM 8-K | May 4, 2015 | May 3, 2015 |
| 8-K | Report | 8-K | Apr 17, 2015 | Apr 15, 2015 |
| 8-K | Report | 8-K | Mar 30, 2015 | Mar 26, 2015 |
| 8-K | Report | 8-K | Mar 16, 2015 | Mar 16, 2015 |
| 8-K | Report | 8-K | Mar 5, 2015 | Mar 5, 2015 |
| 8-K | Report | 8-K | Dec 11, 2014 | Dec 11, 2014 |
| 8-K | Report | 8-K | Oct 24, 2014 | Oct 23, 2014 |
| 8-K | Report | 8-K | Sep 4, 2014 | Sep 4, 2014 |
| 8-K | Report | 8-K | Jul 17, 2014 | Jul 16, 2014 |
| 8-K | Report | 8-K | Jul 11, 2014 | Jul 11, 2014 |
| 8-K | Report | 8-K | Jun 5, 2014 | Jun 4, 2014 |
| 8-K/A | Report | 8-K/A | Jun 3, 2014 | Apr 10, 2014 |
| 8-K | Report | 8-K - 2014 ANNUAL MTG | Apr 11, 2014 | Apr 10, 2014 |
| 8-K | Report | 8-K | Mar 6, 2014 | Mar 6, 2014 |
| 8-K | Report | 8-K | Feb 5, 2014 | Feb 4, 2014 |
| 8-K | Report | 8-K | Dec 12, 2013 | Dec 12, 2013 |
| 8-K | Report | 8-K | Nov 1, 2013 | Nov 1, 2013 |
| 8-K | Report | 8-K | Sep 4, 2013 | Sep 4, 2013 |
| 8-K | Report | 8-K (LAB 10 SECOND LEASE AMENDING AGMT) | Aug 30, 2013 | Aug 29, 2013 |
| 8-K | Report | 8-K | Jun 6, 2013 | Jun 6, 2013 |
| 8-K | Report | 8-K RESULTS OF 2013 ANNUAL MEETING OF STOCKHOLDERS | Mar 25, 2013 | Mar 20, 2013 |
| 8-K | Report | 8-K | Mar 7, 2013 | Mar 7, 2013 |
| 8-K | Report | 8-K (SUPPLEMENTAL SEGMENT DATA) | Jan 29, 2013 | Jan 29, 2013 |
| 8-K | Report | 8-K | Dec 31, 2012 | Dec 27, 2012 |
| 8-K | Report | 8-K | Dec 19, 2012 | Dec 19, 2012 |
| 8-K | Report | 8-K | Dec 13, 2012 | Dec 13, 2012 |
| 8-K | Report | 8-K (RESIGNATION OF DIRECTOR) | Sep 25, 2012 | Sep 24, 2012 |
| 8-K | Report | 8-K | Aug 30, 2012 | Aug 30, 2012 |
| 8-K | Report | 8-K | Aug 15, 2012 | Aug 13, 2012 |
| 8-K | Report | 8-K ELECTION OF DIRECTOR | Jun 1, 2012 | Jun 1, 2012 |
| 8-K | Report | 8-K | May 31, 2012 | May 31, 2012 |
| 8-K | Report | 8-K (2012 ANNUAL MEETING RESULTS) | Mar 23, 2012 | Mar 21, 2012 |
| 8-K | Report | 8-K | Mar 7, 2012 | Mar 7, 2012 |
| 8-K | Report | 8-K | Feb 21, 2012 | Feb 21, 2012 |
| 8-K | Report | 8-K | Feb 15, 2012 | Feb 13, 2012 |
| 8-K | Report | 8-K COVER PAGE | Dec 8, 2011 | Dec 6, 2011 |
| 8-K | Report | FORM 8-K | Nov 4, 2011 | Nov 3, 2011 |
| 8-K | Report | CIENA CORPORATION 8-K | Sep 1, 2011 | Sep 1, 2011 |
| 8-K | Report | FORM 8-K | Jun 8, 2011 | Jun 8, 2011 |
| 8-K | Report | CIENA CORPORATION 8-K | Jun 8, 2011 | Jun 8, 2011 |
| 8-K | Report | FORM 8-K | Mar 28, 2011 | Mar 23, 2011 |
| 8-K | Report | CIENA CORPORATION 8-K | Mar 7, 2011 | Mar 7, 2011 |
| 8-K | Report | CIENA CORP. 8-K | Dec 9, 2010 | Dec 9, 2010 |
| 8-K | Report | FORM 8-K | Oct 21, 2010 | Oct 18, 2010 |
| 8-K | Report | FORM 8-K | Oct 18, 2010 | Oct 12, 2010 |
| 8-K | Report | FORM 8-K | Oct 12, 2010 | Oct 12, 2010 |
| 8-K/A | Report | FORM 8-K/A | Sep 9, 2010 | May 11, 2010 |
| 8-K | Report | CIENA CORPORATION 8-K | Sep 8, 2010 | Sep 8, 2010 |
| 8-K | Report | FORM 8-K | Jul 8, 2010 | Jul 1, 2010 |
| 8-K | Report | CIENA CORP. 8-K | Jun 9, 2010 | Jun 9, 2010 |
| 8-K/A | Report | FORM 8-K/A | May 28, 2010 | Mar 19, 2010 |
| 8-K | Report | FORM 8-K | May 12, 2010 | May 11, 2010 |
| 8-K | Report | FORM 8-K | Apr 15, 2010 | Apr 14, 2010 |
| 8-K | Report | 8-K | Mar 25, 2010 | Mar 19, 2010 |
| 8-K | Report | FORM 8-K | Mar 19, 2010 | Mar 15, 2010 |
| 8-K | Report | FORM 8-K | Mar 12, 2010 | Mar 8, 2010 |
| 8-K | Report | FORM 8-K | Mar 4, 2010 | Mar 4, 2010 |
| 8-K | Report | CIENA CORPORATION 8-K | Mar 4, 2010 | Mar 4, 2010 |
| 8-K | Report | FORM 8-K | Feb 5, 2010 | Feb 2, 2010 |