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Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
SEC Accession No. 0001306550-23-004111
Filing Date
2023-01-26
Accepted
2023-01-26 08:52:11
Documents
1

Document Format Files

Seq Description Document Type Size
1 us1717793095_012623.txt SC 13G/A 11701
  Complete submission text file 0001306550-23-004111.txt   13378
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)

IRS No.: 232725311 | State of Incorp.: DE | Fiscal Year End: 1029
Type: SC 13G/A | Act: 34 | File No.: 005-54195 | Film No.: 23554343
SIC: 3661 Telephone & Telegraph Apparatus

Mailing Address 55 EAST 52ND STREET NEW YORK NY 10055
Business Address 55 EAST 52ND STREET NEW YORK NY 10055 212-810-5300
BlackRock Inc. (Filed by) CIK: 0001364742 (see all company filings)

IRS No.: 320174431 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A
SIC: 6211 Security Brokers, Dealers & Flotation Companies