Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell
View the official recordSEC Form 4 — Statement of Changes in Beneficial OwnershipAll the details
Dates, kept separate
Transaction date
Dec 20, 2025
Reporting period
Not applicable
Filed with the SEC
Dec 24, 2025
OfficerTax withholding
Context
Classification
tax withholding
Code F — shares delivered to pay exercise price or tax liability
Planned / mechanical clue
Tax mechanics (code F)
Only flagged when a footnote says so; never inferred
Source receipt
Record ID
0001998460-25-000021
Filed / recorded
Dec 24, 2025, 12:26 AM UTC
Added to OQRO
Oct 2, 2026, 12:27 PM UTC
Parser
form4-xml-v1
Data quality
Verified: identifiers matched exactly
Issuer
CIENA CORP
Issuer CIK
936395
Ticker
CIEN
Reporting person
Dino Diperna
Relationship
Officer
Officer title
SVP Global R&D
Security
Common Stock
Table
Non-derivative (Table I)
Transaction date
Dec 20, 2025
Transaction code
F
Shares / units
319
Price per share
$230.34
Acquired / disposed
Disposed (D)
Shares owned after
57,629
Ownership form
Direct
Amendment
No
Footnotes from the filing
Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement dated 12/14/2021. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 3 filed on 10/31/2023.
Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).
A Schedule 13G is filed by holders above 5% who say they will not try to influence the company. Index funds and large asset managers file most of them.