Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0001576419-25-000718
Filing Date
2025-04-17
Accepted
2025-04-17 09:35:36
Documents
3

Document Format Files

Seq Description Document Type Size
1 primary_doc.html SCHEDULE 13G/A  
1 primary_doc.xml SCHEDULE 13G/A 5612
2 EXHIBIT 24: POWER OF ATTORNEY PowerOfAttorney.txt EX-24 2796
3 EXHIBIT 99: ITEM 7 Item_7.txt EX-99 779
  Complete submission text file 0001576419-25-000718.txt   10981
Mailing Address 7035 RIDGE ROAD HANOVER MD 21076
Business Address 7035 RIDGE ROAD HANOVER MD 21076 4108658500
CIENA CORP (Subject) CIK: 0000936395 (see all company filings)

EIN.: 232725311 | State of Incorp.: MD | Fiscal Year End: 1101
Type: SCHEDULE 13G/A | Act: 34 | File No.: 005-54195 | Film No.: 25844691
SIC: 3661 Telephone & Telegraph Apparatus
(CF Office: 04 Manufacturing)

Mailing Address 50 HUDSON YARDS NEW YORK NY 10001
Business Address 50 HUDSON YARDS NEW YORK NY 10001 (212) 810-5800
BlackRock, Inc. (Filed by) CIK: 0002012383 (see all company filings)

EIN.: 991116001 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SCHEDULE 13G/A
SIC: 6211 Security Brokers, Dealers & Flotation Companies
(CF Office: 02 Finance)