CIENA CORP — SC TO-I Filings
5 SC TO-I filings on record
This page lists all SC TO-I 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 5 SC TO-I 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 TO-I | SC TO-I | 0001193125-17-218904 | Jun 30, 2017 | — |
| SC TO-I | SC TO-I | 0001193125-15-299091 | Aug 21, 2015 | — |
| SC TO-I | CIENA CORPORATION SCHEDULE TO | 0000950133-02-004068 | Dec 12, 2002 | — |
| SC TO-I | SCHEDULE TO | 0000950133-02-001514 | Apr 17, 2002 | — |
| SC TO-I | CYRAS SYSTEMS,LLC | 0000950133-02-001319 | Apr 1, 2002 | — |