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Ciena Insider Files Form 4 for RSU Tax Withholding, No Market Sale

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Ciena (NYSE:CIEN) filed a Form 4 disclosing routine insider activity by Senior Vice President of Global R&D, Dino DiPerna.

On 06/20/2025, a total of 2,125 common shares were withheld at $74.53 per share (≈ $158 thousand) to cover tax obligations triggered by the vesting of previously reported RSU grants dated 2021-2024. After these administrative, non-market transactions, DiPerna’s direct beneficial ownership stands at 44,122 shares. No open-market purchases or sales occurred; the filing reflects standard tax-withholding adjustments only.

Positive

  • None.

Negative

  • None.
Insider DiPerna Dino
Role SVP Global R&D
Type Security Shares Price Value
Exercise Price or Tax Liability Common Stock 204 $74.53 $15K
Exercise Price or Tax Liability Common Stock 444 $74.53 $33K
Exercise Price or Tax Liability Common Stock 730 $74.53 $54K
Exercise Price or Tax Liability Common Stock 428 $74.53 $32K
Exercise Price or Tax Liability Common Stock 319 $74.53 $24K
Holdings After Transaction: Common Stock — 44,122 shares (Direct)
Footnotes (6)
  1. 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 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. F2. Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).
  3. F3. 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. F4. 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. F5. 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. F6. 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.

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Form 4 Insider Transactions: What Each Field Means →

FAQ

How many CIEN shares were withheld in the latest Form 4?
The filing shows 2,125 shares were withheld to satisfy tax liabilities on 06/20/2025.

What price per share was applied to the withheld CIEN stock?
Each share was valued at $74.53, as disclosed in Table I of the Form 4.

What is Dino DiPerna’s CIEN share ownership after the transaction?
Following the withholding, he directly owns 44,122 shares (including unvested RSUs and PSUs).

Was this an open-market sale of CIEN shares?
No. The shares were withheld by the company solely for tax-withholding purposes related to RSU vesting.
SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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 MD 21076-1426
(City) (State) (Zip)
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
3. Date of Earliest Transaction (Month/Day/Year)
06/20/2025
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
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 06/20/2025 F 204(1) D $74.53 46,043(2) D
Common Stock 06/20/2025 F 444(3) D $74.53 45,599(2) D
Common Stock 06/20/2025 F 730(4) D $74.53 44,869(2) D
Common Stock 06/20/2025 F 428(5) D $74.53 44,441(2) D
Common Stock 06/20/2025 F 319(6) D $74.53 44,122(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 12/14/2021. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 3 filed on 10/31/2023.
By: Michelle Rankin For: Dino Diperna 06/23/2025
** 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 reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Source: View Original Filing on SEC EDGAR