CIENA Insider DiPerna Files Form 4; No Transactions Disclosed

TL;DR

**Insider Dino DiPerna filed a Form 4 for CIENA, but the filing doesn't show any stock trades.**

AI Summary

This Form 4 filing indicates that Dino DiPerna, a reporting insider, has filed a statement of changes in beneficial ownership of securities for CIENA CORP. The filing, dated March 24, 2026, with a period of report of March 20, 2026, is a routine disclosure and does not detail any specific transactions (buys or sells) in the provided text. This matters to investors as it signals that an insider's ownership structure is being updated, which can sometimes precede or follow significant stock activity, though no such activity is disclosed here.

Why It Matters

This filing is a standard disclosure that an insider's ownership information has been updated, providing transparency into potential future or past stock movements, even if no specific transactions are detailed in this particular filing.

Risk Assessment

Risk Level: low — This is a routine compliance filing with no disclosed transactions, posing minimal direct risk to investors.

Analyst Insight

A smart investor would note this routine filing but await further Form 4 disclosures detailing actual transactions (buys or sells) by Dino DiPerna before making any investment decisions related to CIENA CORP.

Key Players & Entities

• DiPerna Dino (person) — Reporting insider
• CIENA CORP (company) — Issuer of securities
• 0001998460 (person) — CIK for DiPerna Dino
• 0000936395 (company) — CIK for CIENA CORP

FAQ

Filing Documents

• form4.html (4)
• form4.xml (4) — 10KB
• 0001123292-26-000497.txt ( ) — 12KB

From the Filing

SEC FORM 4 SEC Form 4 FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940 OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5    Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).    Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10. 1. Name and Address of Reporting Person * DiPerna Dino (Last) (First) (Middle) C/O CIENA CORPORATION 7035 RIDGE RD. (Street) HANOVER MARYLAND 21076-1426 (City) (State) (Zip) UNITED STATES (Country) 2. Issuer Name and Ticker or Trading Symbol CIENA CORP [ CIEN ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) SVP Global R&D 2a. Foreign Trading Symbol 3. Date of Earliest Transaction (Month/Day/Year) 03/20/2026 6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person 4. If Amendment, Date of Original Filed (Month/Day/Year) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 03/20/2026 F 204 (1) D $ 383.89 47,137 (2) D Common Stock 03/20/2026 F 444 (3) D $ 383.89 46,693 (2) D Common Stock 03/20/2026 F 730 (4) D $ 383.89 45,963 (2) D Common Stock 03/20/2026 F 427 (5) D $ 383.89 45,536 (2) D Common Stock 03/20/2026 F 247 (6) D $ 383.89 45,289 (2) D Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Explanation of Responses: 1. Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement dated 10/27/2023. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 filed on 10/31/2023. 2. Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs). 3. Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement dated 12/13/2022. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 3 filed on 10/31/2023. 4. Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement dated 12/12/2023. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 filed on 12/14/2023. 5. Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement dated 12/17/2024. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 filed on 12/19/2024. 6. 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. By: Michelle Rankin For: Dino Diperna 03/24/2026 ** Signature of Reporting Person Date Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. * If the form is filed by more than one r

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View this 4 filing on SEC EDGAR