CIENA (CIEN) SVP Sheela Kosaraju reports 2,012-share tax withholding

Rhea-AI Filing Summary

CIENA CORP SVP and General Counsel Sheela Kosaraju reported routine share dispositions related to tax withholding on vested equity awards. On March 20, 2026, a total of 2,012 shares of common stock were withheld at $383.89 per share to cover tax liabilities tied to several Restricted Stock Unit (RSU) agreements previously granted between December 2022 and December 2025.

These F-code transactions are not open-market sales but payments of tax obligations using shares. After these withholdings, Kosaraju directly owned 94,119 shares of CIENA CORP common stock, and this figure includes unvested RSUs and Performance Stock Units as noted in the disclosure.

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

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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

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 and General Counsel

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/20/2026

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	03/20/2026		F		164(1)	D	$383.89	95,967(2)	D
Common Stock	03/20/2026		F		728(3)	D	$383.89	95,239(2)	D
Common Stock	03/20/2026		F		578(4)	D	$383.89	94,661(2)	D
Common Stock	03/20/2026		F		344(5)	D	$383.89	94,317(2)	D
Common Stock	03/20/2026		F		198(6)	D	$383.89	94,119(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	03/24/2026
	** 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)

FAQ

What did CIENA (CIEN) executive Sheela Kosaraju report in this Form 4?

Sheela Kosaraju reported share dispositions used to pay tax liabilities on vested equity awards. A total of 2,012 CIENA common shares were withheld on March 20, 2026, related to previously granted Restricted Stock Unit agreements.

Were the CIENA (CIEN) Form 4 transactions open-market sales of stock?

No, the transactions were not open-market sales. All reported entries carry code F, meaning shares were withheld by CIENA to satisfy Kosaraju’s tax obligations on vested Restricted Stock Units, rather than being sold in the public market.

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

In total, 2,012 CIENA common shares were withheld to cover tax liabilities. The dispositions occurred in several small blocks on March 20, 2026, all at a price of $383.89 per share, according to the reported data.

What is Sheela Kosaraju’s CIENA (CIEN) shareholding after these transactions?

After the tax-withholding dispositions, Sheela Kosaraju directly owned 94,119 CIENA common shares. The disclosure states this balance includes unvested Restricted Stock Units and Performance Stock Units, providing a combined view of her equity position.

What do F-code transactions mean in the CIENA (CIEN) Form 4?

F-code transactions indicate shares used to pay the exercise price or tax liability on equity awards. Here, each F-code entry reflects CIENA withholding shares from Kosaraju’s vested RSU grants to settle her tax obligations, rather than discretionary trading activity.

Which CIENA (CIEN) equity awards are linked to these tax withholdings?

The tax withholdings relate to Restricted Stock Unit agreements dated December 13, 2022, February 1, 2023, December 12, 2023, December 17, 2024, and December 16, 2025. Each award had been previously reported in earlier Forms 3 or 4.