$CIEN SEC Filings

Filing Filed On
CORRESP 23 Apr 2020
CORRESP 15 Feb 2018
CORRESP 14 Jul 2017
CORRESP 08 Apr 2016
CORRESP 24 Mar 2016
CORRESP 26 Jun 2015
CORRESP 05 Mar 2015
CORRESP 27 Feb 2015
CORRESP 19 Aug 2009
CORRESP 17 Jul 2009
CORRESP 08 Jul 2009
CORRESP 23 Jan 2008
CORRESP 10 Feb 2006