[Form 4] CIENA CORP Insider Trading Activity

Rhea-AI Filing Summary

Ciena Corporation senior vice president and chief strategy officer David M. Rothenstein reported a sale of company stock. On 11/17/2025, he sold 2,500 shares of Ciena common stock in an open market transaction under a pre-arranged Rule 10b5-1 trading plan dated 12/23/2024. The filing states a weighted average sale price of $191.7246 per share, with individual trades executed in a price range from $189.39 to $195.38. After this transaction, Rothenstein beneficially owns 183,190 Ciena shares, which the report notes include unvested restricted stock units (RSUs) and performance stock units (PSUs). The form confirms this is a filing by one reporting person and that the shares are 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

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).

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)
11/17/2025

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	11/17/2025		S		2,500(1)	D	$191.7246(2)	183,190(3)	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 effected pursuant to Rule 10b5-1 trading plan dated 12/23/2024.

2. Reflects the weighted average sales price with transactions in a range of sales from $189.39 to $195.38. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.

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

	By: Michelle Rankin For: David M. Rothenstein	11/18/2025
	** 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.

FAQ

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

The report shows that David M. Rothenstein, senior vice president and chief strategy officer of Ciena Corporation, sold 2,500 shares of Ciena common stock on 11/17/2025 in an open market transaction.

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

The filing lists a weighted average sale price of $191.7246 per share, with actual sales prices ranging from $189.39 to $195.38. Full detail by price level is available upon request to the SEC.

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

Following the reported sale, David M. Rothenstein beneficially owns 183,190 shares of Ciena common stock. This total includes unvested restricted stock units (RSUs) and performance stock units (PSUs).

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

Yes. The filing explains that the 2,500-share sale was effected pursuant to a Rule 10b5-1 trading plan dated 12/23/2024, which is a pre-arranged plan for trading company stock.

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

The report identifies David M. Rothenstein as an officer of Ciena, serving as Senior Vice President and Chief Strategy Officer.

Is this CIENA CORP (CIEN) Form 4 filed by one or multiple reporting persons?

The Form 4 indicates that it is filed by one reporting person, and the reported ownership of Ciena shares is held directly by David M. Rothenstein.