CIENA CORP — SC TO-I/A Filings
10 SC TO-I/A filings on record
This page lists all SC TO-I/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 10 SC TO-I/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 TO-I/A | SC TO-I/A | 0001193125-17-242482 | Jul 31, 2017 | — |
| SC TO-I/A | SC TO-I/A | 0001193125-17-228622 | Jul 14, 2017 | — |
| SC TO-I/A | SC TO-I/A | 0001193125-15-324445 | Sep 21, 2015 | — |
| SC TO-I/A | AMENDMENT NO.3 TO THE SCHEDULE TO | 0000950133-03-000099 | Jan 14, 2003 | — |
| SC TO-I/A | AMEND 2 TO SC TO/A | 0000950133-02-004218 | Dec 27, 2002 | — |
| SC TO-I/A | CIENA CORPORATION SCHEDULE TO/A | 0000950133-02-004144 | Dec 20, 2002 | — |
| SC TO-I/A | AMENDMENT NO. 3 TO SCHEDULE TO | 0000950133-02-002092 | May 22, 2002 | — |
| SC TO-I/A | AMENDMENT NO. 2 TO SCHEDULE TO | 0000950133-02-001777 | May 2, 2002 | — |
| SC TO-I/A | SCHEDULE TO AMENDMENT NO. 1 | 0000950133-02-001689 | Apr 30, 2002 | — |
| SC TO-I/A | AMENDMENT NO. 1 TO SCHEDULE TO | 0000950133-02-001563 | Apr 19, 2002 | — |