47 filings
SD
CIEN
CIENA Corp.
31 May 23
Conflict minerals disclosure
11:25am
SD
CIEN
CIENA Corp.
31 May 22
Conflict minerals disclosure
4:30pm
SD
CIEN
CIENA Corp.
28 May 21
Conflict minerals disclosure
8:52am
SD
CIEN
CIENA Corp.
29 May 20
Conflict minerals disclosure
5:25pm
UPLOAD
CIEN
CIENA Corp.
27 Apr 20
Letter from SEC
12:00am
CORRESP
g45xlk7tpcid
23 Apr 20
Correspondence with SEC
12:00am
UPLOAD
93st5kgkt1typ 7433y
16 Apr 20
Letter from SEC
12:00am
CT ORDER
8482sa2m
24 Oct 19
Confidential treatment order
12:37pm
SD
11v8d xu2rb
29 May 19
Conflict minerals disclosure
3:36pm
SD
bnm5a023st0a
24 May 18
Conflict minerals disclosure
12:04pm
UPLOAD
d8l3plxepetqaaiv
27 Feb 18
Letter from SEC
12:00am
CORRESP
6vlnb3sd5m0
15 Feb 18
Correspondence with SEC
12:00am
UPLOAD
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8 Feb 18
Letter from SEC
12:00am
EFFECT
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28 Jul 17
Notice of effectiveness
12:00am
CORRESP
7nqaoru
14 Jul 17
Correspondence with SEC
12:00am
UPLOAD
so904
10 Jul 17
Letter from SEC
12:00am
SD
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26 May 17
Conflict minerals disclosure
12:00am
SD
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27 May 16
Conflict minerals disclosure
12:00am
UPLOAD
ype27k4pfqi1hwt 3dvk
14 Apr 16
Letter from SEC
12:00am
CORRESP
2x1zka2ovfzvldbn
8 Apr 16
Correspondence with SEC
12:00am