Ciena Corp (NYSE: CIEN) CFO withholds 14,441 shares for taxes

Rhea-AI Filing Summary

CIENA CORP SVP & Chief Financial Officer Marc D. Graff reported a tax-withholding disposition of 14,441 shares of common stock on August 1, 2026 at $377.05 per share to cover personal tax liabilities from a prior RSU award. After this withholding, he directly holds 112,514 shares, including unvested RSUs.

Insider Trade Summary

Net Seller: 14,441 shares

Net Sell 1 txn

Insider Graff Marc D.

Role SVP & Chief Financial Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1, F2	14,441	$377.05	$5.44M

Holdings After Transaction: Common Stock — 112,514 shares (Direct)

Footnotes (2)

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 08/01/2025. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 filed on 8/05/2025.
2. F2. Shares reported include unvested Restricted Stock Units (RSUs).

Key Figures

Shares withheld for taxes: 14441.0000 shares Tax withholding price: $377.0500 per share Shares held after transaction: 112514.0000 shares

3 metrics

Shares withheld for taxes 14441.0000 shares Code F tax-withholding disposition on 2026-08-01

Tax withholding price $377.0500 per share Value applied to cover reporting person’s tax liabilities

Shares held after transaction 112514.0000 shares Direct holdings after tax withholding, including unvested RSUs

Key Terms

Restricted Stock Units (RSUs), restricted stock unit (RSU) award agreement, tax liabilities

3 terms

Restricted Stock Units (RSUs) financial

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

Restricted stock units (RSUs) are a type of company promise to give employees shares of stock in the future, usually after certain conditions like working for a set time. They are like a gift promised today that you receive later, which can become valuable if the company's stock price goes up. RSUs matter because they are a way companies reward employees and can be a significant part of compensation.

restricted stock unit (RSU) award agreement financial

"related to a restricted stock unit (RSU) award agreement dated 08/01/2025."

tax liabilities financial

"shares withheld to cover payment of the tax liabilities of the reporting person"

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/04/2026 - 06:07 PM Accepted by SEC EDGAR 08/04/2026 - 06:07 PM Learn about SEC filing dates

FAQ

What insider transaction did Ciena (CIEN) CFO Marc D. Graff report?

Ciena SVP & CFO Marc D. Graff reported a tax-withholding disposition of common stock. On August 1, 2026, 14,441 shares were withheld to cover tax liabilities tied to a previously granted restricted stock unit (RSU) award, rather than sold in the open market.

How many Ciena (CIEN) shares were withheld for Marc D. Graff’s taxes and at what value?

A total of 14,441 shares of Ciena common stock were withheld for Marc D. Graff’s tax obligations. The withholding was valued at $377.05 per share, reflecting the amount used to satisfy his tax liabilities related to an earlier RSU award agreement.

How many Ciena (CIEN) shares does Marc D. Graff hold after this Form 4 transaction?

Following the tax-withholding transaction, Marc D. Graff directly holds 112,514 shares of Ciena common stock. According to the disclosure, these 112,514 shares include unvested Restricted Stock Units (RSUs), representing both vested and unvested equity interests in the company.

Was the Ciena (CIEN) CFO’s reported transaction an open-market sale of shares?

No. The reported activity reflects shares withheld to pay tax liabilities, not an open-market sale. The company used 14,441 shares from a prior RSU award to satisfy Marc D. Graff’s tax obligations, a common administrative mechanism for equity-based compensation.

What RSU award is connected to Marc D. Graff’s Ciena (CIEN) tax-withholding shares?

The tax-withheld shares relate to a restricted stock unit (RSU) award agreement dated August 1, 2025. The acquisition of that RSU grant was already reported earlier, and the current Form 4 only covers the portion of shares used to satisfy resulting tax liabilities.

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^*

Graff Marc D.

(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 & Chief Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/01/2026

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	08/01/2026		F		14,441(1)	D	$377.05	112,514(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 08/01/2025. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 filed on 8/05/2025.

2. Shares reported include unvested Restricted Stock Units (RSUs).

	By: Michelle Rankin For: Marc D Graff	08/04/2026
	** 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)