Marc D. Graff - 20 Mar 2026 Form 4 Insider Report for CIENA CORP (CIEN)

Reporting relationship: SVP & Chief Financial Officer
Issuer ticker: CIEN
Reported as of: 20 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 24 Mar 2026, 19:12:53 UTC
Prior SEC filing: 18 Dec 2025
Source filing: View source filing
Reporting owner signature: By: Michelle Rankin For: Marc D Graff

Key filing fact

Marc D. Graff filed Form 4 for CIENA CORP (CIEN) on 24 Mar 2026.

Key facts

This page summarizes Marc D. Graff's Form 4 filing for CIENA CORP (CIEN).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 24 Mar 2026, 19:12.

Change

Previous filing in this sequence was filed on 18 Dec 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002080157 Primary reporting owner

Graff Marc D.

Relationship: SVP & Chief Financial Officer
Address: C/O CIENA CORPORATION, 7035 RIDGE RD., HANOVER
Signature: By: Michelle Rankin For: Marc D Graff
Signature date: 24 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CIEN transaction

Common Stock

Tax liability

Transaction value
Shares: -199
Change %: -0.16%
Price: $383.89^*
Shares after: 127,406
Date: 20 Mar 2026
Ownership: Direct
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement dated 12/16/2025. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 filed on 12/18/2025.

Footnote F2

Shares reported include unvested RSUs.