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
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23 Apr 20
Correspondence with SEC
12:00am
UPLOAD
16cysbm9it44uy18s1
16 Apr 20
Letter from SEC
12:00am
CT ORDER
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24 Oct 19
Confidential treatment order
12:37pm
SD
dim2bclw6 n2
29 May 19
Conflict minerals disclosure
3:36pm
SD
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24 May 18
Conflict minerals disclosure
12:04pm
UPLOAD
i6g79m1
27 Feb 18
Letter from SEC
12:00am
CORRESP
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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
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14 Jul 17
Correspondence with SEC
12:00am
UPLOAD
tnu9yzx27es9k
10 Jul 17
Letter from SEC
12:00am
SD
qtxec13jc7plxeubm
26 May 17
Conflict minerals disclosure
12:00am
SD
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27 May 16
Conflict minerals disclosure
12:00am
UPLOAD
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14 Apr 16
Letter from SEC
12:00am
CORRESP
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8 Apr 16
Correspondence with SEC
12:00am