Ciena legal chief has 1,915 shares withheld for tax

Ciena’s chief legal officer had 1,915 shares withheld at $348.80 to satisfy taxes on vested RSU awards, not through open-market sales.

Rhea-AI Filing Summary

CIENA CORP (CIEN) reported that EVP & Chief Legal Officer Sheela Kosaraju disposed of common shares on September 20, 2026 in a series of tax-related transactions. A total of 1,915 shares of common stock were withheld at $348.80 per share to cover Kosaraju's tax liabilities arising from previously granted restricted stock unit (RSU) awards. These were reported as code F transactions and are characterized as shares delivered or withheld for payment of tax liability, not open-market sales. No Rule 10b5-1 trading plan is reported.

Insider Trade Summary

Tax Withholding: 1,915 shares

Tax Withholding 5 txns

Insider Kosaraju Sheela

Role EVP & Chief Legal Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1, F2	156	$348.80	$54K
Tax Withholding	Common Stock F3, F2	691	$348.80	$241K
Tax Withholding	Common Stock F4, F2	549	$348.80	$191K
Tax Withholding	Common Stock F5, F2	330	$348.80	$115K
Tax Withholding	Common Stock F6, F2	189	$348.80	$66K

Holdings After Transaction: Common Stock — 86,166 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 12/13/2022. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 3 filed on 2/3/2023.
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 2/1/2023. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 filed on 2/3/2023.
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

Total shares withheld for tax: 1,915 shares Per-share value used for tax withholding: $348.80 per share First tax-withholding block: 156 shares +4 more

7 metrics

Total shares withheld for tax 1,915 shares Shares of CIENA CORP common stock withheld on September 20, 2026 for tax liability

Per-share value used for tax withholding $348.80 per share Applied to each of the September 20, 2026 tax-withholding entries

First tax-withholding block 156 shares Shares withheld for tax on RSU award agreement dated December 13, 2022

Second tax-withholding block 691 shares Shares withheld for tax on RSU award agreement dated February 1, 2023

Third tax-withholding block 549 shares Shares withheld for tax on RSU award agreement dated December 12, 2023

Fourth tax-withholding block 330 shares Shares withheld for tax on RSU award agreement dated December 17, 2024

Fifth tax-withholding block 189 shares Shares withheld for tax on RSU award agreement dated December 16, 2025

Key Terms

Restricted Stock Units (RSUs), Performance Stock Units (PSUs), tax liabilities, Form 4, +1 more

5 terms

Restricted Stock Units (RSUs) financial

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

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.

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.

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"

Form 4 regulatory

"Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 filed"

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.

Form 3 regulatory

"Acquisition of the RSU was previously reported in Table I of the reporting person's Form 3 filed"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

FAQ

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

What insider transaction did CIEN report for Sheela Kosaraju on September 20, 2026?

CIEN reported that EVP & Chief Legal Officer Sheela Kosaraju had 1,915 shares of common stock withheld on September 20, 2026 to cover tax liabilities tied to multiple RSU awards, at a reported price of $348.80 per share.

Was the September 20, 2026 CIEN Form 4 transaction an open-market sale?

No. The Form 4 describes code F transactions, which are shares delivered or withheld to pay tax liabilities related to vested RSU awards, rather than open-market sales of CIEN stock.

How many CIEN shares were withheld in each tax transaction for Sheela Kosaraju?

CIEN reported five tax-withholding dispositions for Sheela Kosaraju: 156, 691, 549, 330, and 189 shares of common stock, all dated September 20, 2026, totaling 1,915 shares.

What price per share was reported for the CIEN tax-withholding transactions?

Each of the reported CIEN common stock tax-withholding transactions for Sheela Kosaraju used a price of $348.80 per share in the Form 4 for calculating the value of the shares withheld.

Were the CIEN insider transactions made under a Rule 10b5-1 trading plan?

No. The filing’s Rule 10b5-1 checkbox is marked as false, and there is no footnote indicating that the September 20, 2026 transactions were made under a Rule 10b5-1 or other pre-arranged trading plan.

What equity awards were related to the CIEN tax-withholding transactions?

The footnotes state the withheld CIEN shares relate to restricted stock unit (RSU) award agreements dated December 13, 2022, February 1, 2023, December 12, 2023, December 17, 2024, and December 16, 2025.

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

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Available on EDGAR 09/22/2026 - 03:00 PM Accepted by SEC EDGAR 09/22/2026 - 03:00 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^*

Kosaraju Sheela

(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 Legal 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		156(1)	D	$348.8	87,925(2)	D
Common Stock	09/20/2026		F		691(3)	D	$348.8	87,234(2)	D
Common Stock	09/20/2026		F		549(4)	D	$348.8	86,685(2)	D
Common Stock	09/20/2026		F		330(5)	D	$348.8	86,355(2)	D
Common Stock	09/20/2026		F		189(6)	D	$348.8	86,166(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 12/13/2022. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 3 filed on 2/3/2023.

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 2/1/2023. Acquisition of the RSU was previously reported in Table I of the reporting person's Form 4 filed on 2/3/2023.

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: Sheela Kosaraju	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)