$CIEN SC TO-I/A SEC Filings

Filed On	Filing
31 Jul 2017	SC TO-I/A
14 Jul 2017	SC TO-I/A
21 Sep 2015	SC TO-I/A
14 Jan 2003	AMENDMENT NO.3 TO THE SCHEDULE TO
27 Dec 2002	AMEND 2 TO SC TO/A
20 Dec 2002	CIENA CORPORATION SCHEDULE TO/A
22 May 2002	AMENDMENT NO. 3 TO SCHEDULE TO
02 May 2002	AMENDMENT NO. 2 TO SCHEDULE TO
30 Apr 2002	SCHEDULE TO AMENDMENT NO. 1
19 Apr 2002	AMENDMENT NO. 1 TO SCHEDULE TO