4Filing Date: Oct 6, 2026

Ciena 4: Graff Marc D. sold 97 shares at $355.19 on 2026-10-01 (Oct 6, 2026)

Statement of Changes in Beneficial Ownership

View SEC Filing
ACC: 0002080157-26-000015
Total Value$34.5K
Trades1
Insiders1

Transaction Details

Graff Marc D.
EVP & Chief Financial Officer·Direct
Sell · Dispose
Common Stock
Shares-97
Price$355.19
Total Value$34.5K
Shares Owned After107.14K
Transaction DateOct 1, 2026
10b5-1
Footnotes ▸

Sales were affected pursuant to Rule 10b5-1 trading plan dated 03/25/2026. | Shares reported include unvested Restricted Stock Units (RSUs)

Post-Transaction Holdings

Graff Marc D. · EVP & Chief Financial Officer
SecuritySharesChange
Common Stock107.14K-97 (-0.09%)
Original SEC Filing Textexpand_more
=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-10-01 10b5-1 Pre-arranged Plan: Yes --- Issuer --- Name: CIENA CORP (CIEN) CIK: 0000936395 --- Reporting Owner --- Name: Graff Marc D. CIK: 0002080157 Role: Officer (EVP & Chief Financial Officer) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-10-01 | Code: S (Open market sale) Shares: -97 | Price: $355.19 Total Value: $34,453.43 Shares Owned After: 107,136 | Ownership: D (Direct) Footnotes: [F1] Sales were affected pursuant to Rule 10b5-1 trading plan dated 03/25/2026. [F2] Shares reported include unvested Restricted Stock Units (RSUs) --- Footnotes (Complete Index) --- F1: Sales were affected pursuant to Rule 10b5-1 trading plan dated 03/25/2026. F2: Shares reported include unvested Restricted Stock Units (RSUs) --- Signature --- /s/ By: Michelle Rankin For: Marc D Graff (2026-10-06)

keid analysis is for reference only and does not constitute investment advice.