Ciena SVP has shares withheld for RSU taxes

Ciena Corporation senior vice president of Global R&D Dino DiPerna reported routine tax-withholding transactions in company stock.

Rhea-AI Filing Summary

Ciena Corporation senior vice president of Global R&D Dino DiPerna reported routine tax-withholding transactions in company stock. On June 20, 2026, a total of 2,054 shares of common stock were disposed of at $428.22 per share to cover tax liabilities from previously granted restricted stock unit awards.

These Form 4 entries are coded as F, meaning the shares were withheld by the company for taxes rather than sold in the open market. The filing notes that his reported holdings include unvested restricted stock units and performance stock units, indicating ongoing equity-based compensation.

Insider Trade Summary

Exercise Price or Tax Liability: 2,054 shares

Exercise Price or Tax Liability 5 txns

Insider DiPerna Dino

Role SVP Global R&D

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	204	$428.22	$87K
Exercise Price or Tax Liability	Common Stock	444	$428.22	$190K
Exercise Price or Tax Liability	Common Stock	730	$428.22	$313K
Exercise Price or Tax Liability	Common Stock	428	$428.22	$183K
Exercise Price or Tax Liability	Common Stock	248	$428.22	$106K

Holdings After Transaction: Common Stock — 40,406 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 12/16/2025. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 filed on 12/18/2025.

Key Figures

Tax-withholding shares: 2,054 shares Per-share value: $428.22 per share Tax-withholding transactions: 5 transactions +2 more

5 metrics

Tax-withholding shares 2,054 shares Total shares withheld for taxes on 2026-06-20

Per-share value $428.22 per share Value used for tax-withholding dispositions

Tax-withholding transactions 5 transactions Form 4 code F entries on 2026-06-20

Tax-withholding shares by summary 2,054 shares TaxWithholdingShares in transaction summary

Net buy/sell shares 0 shares NetBuySellShares reported as neutral

Key Terms

restricted stock unit (RSU), Performance Stock Units (PSUs), Form 4, tax liabilities, +1 more

5 terms

restricted stock unit (RSU) financial

"Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement"

A restricted stock unit (RSU) is a promise from a company to give an employee company shares (or cash equal to their value) at a future date if certain conditions are met, such as staying with the company or hitting performance targets. For investors, RSUs matter because when they convert into actual shares they increase the number of shares available and can create selling pressure as employees cash out—think of them as a future paycheck paid in company stock.

Performance Stock Units (PSUs) financial

"Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs)."

Performance stock units (PSUs) are a form of executive or employee pay that promise company shares only if pre-set performance goals are met over a defined period; think of them as a bonus paid in stock that arrives only when the company hits agreed targets. Investors watch PSUs because they affect the number of shares outstanding (dilution) and reveal how management’s pay is tied to financial or operational results, aligning incentives with shareholder outcomes.

Form 4 regulatory

"Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 filed on 10/31/2023."

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

tax liabilities financial

"Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement"

tax-withholding disposition financial

"transaction_action: tax-withholding disposition"

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Ciena (CIEN) executive Dino DiPerna report in this Form 4?

Dino DiPerna reported shares of Ciena common stock withheld to pay taxes on vested RSU awards. These are coded as Form 4 code F transactions, reflecting tax-withholding dispositions rather than open-market purchases or sales of shares.

How many Ciena (CIEN) shares were withheld for taxes in this filing?

The filing shows a total of 2,054 Ciena common shares withheld for tax liabilities. Multiple entries on June 20, 2026, each reflect a portion of shares tied to separate restricted stock unit award agreements granted on earlier dates.

At what price were the withheld Ciena (CIEN) shares valued?

The withheld Ciena shares in this Form 4 are reported at $428.22 per share. This price is used for calculating the value of stock withheld to satisfy the executive’s tax obligations related to vesting restricted stock units.

Do these Ciena (CIEN) Form 4 transactions represent an open-market sale?

No, these transactions are not open-market sales. They are Form 4 code F events, where shares are withheld by Ciena to cover the reporting person’s tax liabilities arising from vesting restricted stock unit awards previously disclosed in earlier SEC filings.

Which equity awards are referenced in Dino DiPerna’s Ciena (CIEN) Form 4 footnotes?

The footnotes reference several restricted stock unit award agreements dated 10/27/2023, 12/13/2022, 12/12/2023, 12/17/2024, and 12/16/2025. The Form 4 states these awards were previously reported in earlier Form 3 or Form 4 filings.

What does the Ciena (CIEN) Form 4 say about unvested RSUs and PSUs?

The Form 4 notes that the shares reported for Dino DiPerna include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs). This indicates a portion of his Ciena equity compensation remains subject to vesting or performance conditions.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/23/2026 - 01:37 PM EDT Learn about SEC filing dates

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 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)
06/20/2026

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	06/20/2026		F		204(1)	D	$428.22	42,256(2)	D
Common Stock	06/20/2026		F		444(3)	D	$428.22	41,812(2)	D
Common Stock	06/20/2026		F		730(4)	D	$428.22	41,082(2)	D
Common Stock	06/20/2026		F		428(5)	D	$428.22	40,654(2)	D
Common Stock	06/20/2026		F		248(6)	D	$428.22	40,406(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	06/22/2026
	** 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 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.
* Form 4: SEC 1474 (03-26)