CIENA CORP — SC 13G/A Filings
95 SC 13G/A filings on record
This page lists all SC 13G/A 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 95 SC 13G/A documents with the SEC since 2020. To view all SEC filings by CIENA CORP, see the full filings list.
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 |
|---|---|---|---|---|
| SC 13G/A | — | 0000315066-24-002732 | Nov 12, 2024 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-24-020604 | Feb 13, 2024 | — |
| SC 13G/A | — | 0000315066-24-001634 | Feb 12, 2024 | — |
| SC 13G/A | — | 0000315066-24-001065 | Feb 9, 2024 | — |
| SC 13G/A | — | 0001086364-24-005661 | Jan 30, 2024 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-23-069840 | Jun 9, 2023 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-23-015627 | Feb 9, 2023 | — |
| SC 13G/A | — | 0000315066-23-001472 | Feb 9, 2023 | — |
| SC 13G/A | — | 0001306550-23-004111 | Jan 26, 2023 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-22-016814 | Feb 9, 2022 | — |
| SC 13G/A | — | 0000834237-22-002309 | Jan 27, 2022 | — |
| SC 13G/A | — | 0000834237-22-000859 | Jan 26, 2022 | — |
| SC 13G/A | — | 0000834237-21-008088 | Apr 12, 2021 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-21-017752 | Feb 10, 2021 | — |
| SC 13G/A | — | 0000834237-21-002811 | Jan 29, 2021 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-20-017738 | Feb 12, 2020 | — |
| SC 13G/A | — | 0000834237-20-001698 | Feb 4, 2020 | — |
| SC 13G/A | — | 0000932471-19-004371 | Feb 11, 2019 | — |
| SC 13G/A | — | 0000215457-19-001897 | Jan 30, 2019 | — |
| SC 13G/A | — | 0000215457-19-001031 | Jan 24, 2019 | — |
| SC 13G/A | — | 0001390777-19-000006 | Jan 22, 2019 | — |
| SC 13G/A | — | 0000930413-18-000411 | Feb 14, 2018 | — |
| SC 13G/A | — | 0000930413-18-000389 | Feb 14, 2018 | — |
| SC 13G/A | — | 0000932471-18-003178 | Feb 9, 2018 | — |
| SC 13G/A | — | 0001390777-18-000035 | Feb 7, 2018 | — |
| SC 13G/A | — | 0000215457-18-001669 | Jan 19, 2018 | — |
| SC 13G/A | — | 0000930413-17-000520 | Feb 14, 2017 | — |
| SC 13G/A | CIENA CORP 13G/A | 0000312348-17-000011 | Feb 14, 2017 | — |
| SC 13G/A | — | 0000930413-17-000508 | Feb 14, 2017 | — |
| SC 13G/A | — | 0000932471-17-001213 | Feb 10, 2017 | — |
| SC 13G/A | SEC SCHEDULE 13G | 0000902219-17-000091 | Feb 9, 2017 | — |
| SC 13G/A | — | 0000869311-17-000333 | Jan 12, 2017 | — |
| SC 13G/A | — | 0000215457-16-006832 | Oct 7, 2016 | — |
| SC 13G/A | — | 0001390777-16-000230 | Jun 9, 2016 | — |
| SC 13G/A | CIENA CORP 13G/A 2015 | 0000312348-16-000048 | Feb 12, 2016 | — |
| SC 13G/A | — | 0000932471-16-012016 | Feb 11, 2016 | — |
| SC 13G/A | — | 0000930413-16-005378 | Feb 10, 2016 | — |
| SC 13G/A | — | 0000215457-16-005504 | Feb 10, 2016 | — |
| SC 13G/A | — | 0000930413-16-005390 | Feb 10, 2016 | — |
| SC 13G/A | — | 0000312348-15-000025 | Sep 10, 2015 | — |
| SC 13G/A | — | 0001390777-15-000088 | Jun 8, 2015 | — |
| SC 13G/A | — | 0000312348-15-000012 | Feb 17, 2015 | — |
| SC 13G/A | — | 0000932471-15-004825 | Feb 11, 2015 | — |
| SC 13G/A | — | 0001390777-15-000036 | Feb 10, 2015 | — |
| SC 13G/A | — | 0001086364-15-000659 | Jan 23, 2015 | — |
| SC 13G/A | SC 13G/A | 0001144204-14-009777 | Feb 14, 2014 | — |
| SC 13G/A | — | 0001011438-14-000106 | Feb 13, 2014 | — |
| SC 13G/A | — | 0000932471-14-004114 | Feb 12, 2014 | — |
| SC 13G/A | — | 0000312348-14-000008 | Feb 12, 2014 | — |
| SC 13G/A | — | 0001305227-14-000088 | Feb 10, 2014 | — |