0001256071-11-000018.txt : 20111114
0001256071-11-000018.hdr.sgml : 20111111
20111110173237
ACCESSION NUMBER: 0001256071-11-000018
CONFORMED SUBMISSION TYPE: SC 13G
PUBLIC DOCUMENT COUNT: 1
FILED AS OF DATE: 20111114
DATE AS OF CHANGE: 20111110
SUBJECT COMPANY:
COMPANY DATA:
COMPANY CONFORMED NAME: CIENA CORP
CENTRAL INDEX KEY: 0000936395
STANDARD INDUSTRIAL CLASSIFICATION: TELEPHONE & TELEGRAPH APPARATUS [3661]
IRS NUMBER: 232725311
STATE OF INCORPORATION: DE
FISCAL YEAR END: 1031
FILING VALUES:
FORM TYPE: SC 13G
SEC ACT: 1934 Act
SEC FILE NUMBER: 005-54195
FILM NUMBER: 111196627
BUSINESS ADDRESS:
STREET 1: 1201 WINTERSON ROAD
CITY: LINTHICUM
STATE: MD
ZIP: 21090
BUSINESS PHONE: 4108658500
MAIL ADDRESS:
STREET 1: 1201 WINTERSON ROAD
CITY: LINTHICUM
STATE: MD
ZIP: 21090
FILED BY:
COMPANY DATA:
COMPANY CONFORMED NAME: PLATINUM INVESTMENT MANAGEMENT LTD
CENTRAL INDEX KEY: 0001256071
IRS NUMBER: 000000000
FILING VALUES:
FORM TYPE: SC 13G
BUSINESS ADDRESS:
STREET 1: C/O PLATINUM INVESTMENT MANAGEMENT
STREET 2: LEVEL 8, 7 MACQUARIE PLACE
CITY: SYDNEY AUSTRALIA 2000
STATE: C3
ZIP: 00000
BUSINESS PHONE: 61292557533
MAIL ADDRESS:
STREET 1: C/O PLATINUM INVESTMENT MANAGEMENT
STREET 2: LEVEL 8, 7 MACQUARIE PLACE
CITY: SYDNEY AUSTRALIA 2000
STATE: C3
ZIP: 00000
FORMER COMPANY:
FORMER CONFORMED NAME: PLATINUM ASSET MANAGEMENT LTD
DATE OF NAME CHANGE: 20030722
SC 13G
1
ciena21.txt
SCHEDULE 13G FORM
Item 1.
(a) Ciena Corp
(b) 1201 Winterson Road
Linthicum, MD 21090-2205
United States
Item 2.
(a) Platinum Investment Management Limited
(b) Level 8, 7 Macquarie Place
Sydney NSW 2000
Australia
(c) Australia
(d) Common Stock
(e) 171779309
Item 3.
N/A
Item 4.
(a) 9,819,800
(b) 10.1%
(c) (i) 8,092,216
(ii) 0
(iii) 9,819,800
(iv) 0
Item 5
No
Item 6
No
Item 7
N/A
Item 8
N/A
Item 9
N/A
Item 10
(a) N/A
(b) By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were not acquired and are not
held for the purpose of or with the effect of changing or influencing
the control of the issuer of the securities and were not acquired and
are not held in connection with or as a participant in any transaction
having that purpose or effect.
After reasonable inquiry and to the best of my
knowledge and belief, I certify that the information
set forth in this statement is true, complete and correct.