Ciena CFO has 286 shares withheld for taxes

Ciena’s CFO had 286 shares withheld to cover taxes on RSU vesting and now directly holds 107,233 CIEN shares, including unvested RSUs.

Rhea-AI Filing Summary

CIENA CORP (CIEN) reported that EVP & Chief Financial Officer Marc D. Graff had 286 shares of common stock withheld on September 20, 2026 to cover tax liabilities arising from a previously granted restricted stock unit (RSU) award. The shares were valued at $348.80 per share for this withholding. Following this transaction, Graff directly holds 107,233 shares of CIENA common stock, which the company states include unvested RSUs. No transactions were made under a Rule 10b5-1 trading plan.

Insider Trade Summary

Tax Withholding: 286 shares

Tax Withholding 1 txn

Insider Graff Marc D.

Role EVP & Chief Financial Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1, F2	286	$348.80	$100K

Holdings After Transaction: Common Stock — 107,233 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 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.
2. F2. Shares reported include unvested Restricted Stock Units (RSUs).

Key Figures

Shares withheld for tax liabilities: 286 shares Per-share value for withholding: $348.80 per share Shares held after transaction: 107,233 shares

3 metrics

Shares withheld for tax liabilities 286 shares Withheld on September 20, 2026 for RSU-related tax liabilities

Per-share value for withholding $348.80 per share Valuation used for the 286 shares withheld on September 20, 2026

Shares held after transaction 107,233 shares Direct holdings of Marc D. Graff after the tax-withholding transaction, including unvested RSUs

Key Terms

Restricted Stock Units (RSUs), tax liabilities, Rule 10b5-1

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.

tax liabilities financial

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

Rule 10b5-1 regulatory

"No Rule 10b5-1 trading plan is reported for this transaction"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

FAQ

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

What insider transaction did CIEN report for CFO Marc D. Graff?

CIENA CORP reported that CFO Marc D. Graff had 286 shares of common stock withheld on September 20, 2026 to cover tax liabilities related to a restricted stock unit award. This was a tax-withholding disposition, not an open-market sale or purchase.

How many CIEN shares does the CFO hold after this Form 4 transaction?

After the reported transaction, CFO Marc D. Graff directly holds 107,233 CIENA common shares. The company notes that these reported shares include unvested Restricted Stock Units (RSUs).

Was the CIEN CFO’s September 20, 2026 transaction an open-market sale?

No. The Form 4 states the transaction was a tax-withholding disposition, where 286 shares were withheld to pay tax liabilities tied to an RSU award, rather than an open-market sale of shares.

At what price were the CIEN shares valued for the CFO’s tax withholding?

The 286 shares withheld for taxes were valued at $348.80 per share in the Form 4. This price is used for the tax-withholding calculation for the restricted stock unit-related transaction.

Did CIEN indicate that the CFO’s Form 4 transaction used a Rule 10b5-1 plan?

No. The filing indicates no Rule 10b5-1 trading plan was affirmed for this transaction. It is reported solely as a tax-withholding event tied to an RSU award, not as part of a pre-arranged trading plan.

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

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Available on EDGAR 09/22/2026 - 02:58 PM Accepted by SEC EDGAR 09/22/2026 - 02:57 PM 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^*

Graff Marc D.

(Last) (First) (Middle)

C/O CIENA CORPORATION

8150 MAPLE LAWN BOULEVARD, SUITE 300

(Street)

FULTON MARYLAND 20759

(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)
	EVP & Chief Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/20/2026

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	09/20/2026		F		286(1)	D	$348.8	107,233(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 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.

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

	By: Michelle Rankin For: Marc D Graff	09/21/2026
	** 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)