Ciena (CIEN) SVP Rothenstein sells 2,500 shares in 10b5-1 trade plan

Rhea-AI Filing Summary

Ciena Corporation executive David M. Rothenstein, SVP and Chief Strategy Officer, reported a sale of company stock. On 01/09/2026, he sold 2,500 shares of Ciena common stock at a price of $219.28 per share in an open-market transaction coded as a sale.

The filing states that this transaction was carried out under a pre-established Rule 10b5-1 trading plan dated 10/10/2025, which is designed to allow insiders to sell shares according to a set schedule. After this sale, Rothenstein beneficially owned 202,194 Ciena shares, and this amount includes unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs). All reported holdings are listed as held directly.

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

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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).

X

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^*

Rothenstein David M

(Last) (First) (Middle)

C/O CIENA CORPORATION

7035 RIDGE RD.

(Street)

HANOVER MD 21076-1426

(City) (State) (Zip)

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 Chief Strategy Officer

3. Date of Earliest Transaction (Month/Day/Year)
01/09/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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	01/09/2026		S		2,500(1)	D	$219.28	202,194(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. Sales were affected pursuant to Rule 10b5-1 trading plan dated 10/10/2025.

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

	By: Michelle Rankin For: David Rothenstein	01/13/2026
	** 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).
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FAQ

What insider transaction did CIENA CORP (CIEN) report for David M. Rothenstein?

CIENA CORP reported that David M. Rothenstein, its SVP and Chief Strategy Officer, sold 2,500 shares of Ciena common stock in a transaction dated 01/09/2026.

At what price were the CIENA CORP (CIEN) shares sold in this Form 4 filing?

The 2,500 shares of CIENA CORP common stock were sold at a price of $219.28 per share.

How many CIENA CORP (CIEN) shares does David M. Rothenstein own after the reported sale?

Following the reported transaction, David M. Rothenstein beneficially owned 202,194 shares of CIENA CORP common stock, including unvested RSUs and PSUs.

Was the CIENA CORP (CIEN) insider sale made under a Rule 10b5-1 trading plan?

Yes. The filing explains that the sale was effected pursuant to a Rule 10b5-1 trading plan dated 10/10/2025, which pre-arranges trades for insiders.

What is David M. Rothenstein’s role at CIENA CORP (CIEN)?

David M. Rothenstein is reported as an officer of CIENA CORP, serving as SVP and Chief Strategy Officer.

Are David M. Rothenstein’s CIENA CORP (CIEN) holdings reported as direct or indirect ownership?

The Form 4 lists his holdings as direct ownership (D), and the reported shares include unvested RSUs and PSUs.