Ciena executive sells 2,500 shares under Rule 10b5-1 plan

Ciena Corporation executive David M. Rothenstein, Senior Vice President and Chief Strategy Officer, reported selling 2,500 shares of Ciena common stock on 12/15/2025 at $220.84 per share in a transaction coded as a sale.

Rhea-AI Filing Summary

Ciena Corporation executive David M. Rothenstein, Senior Vice President and Chief Strategy Officer, reported selling 2,500 shares of Ciena common stock on 12/15/2025 at $220.84 per share in a transaction coded as a sale.

The sale was executed under a Rule 10b5-1 trading plan dated 12/23/2024. Following this transaction, he beneficially owned 180,690 shares, which include unvested restricted stock units (RSUs) and performance stock units (PSUs).

Insider Trade Summary

Net Seller: 2,500 shares

Net Sell 1 txn

Insider Rothenstein David M

Role SVP and Chief Strategy Officer

Sold 2,500 shs ($552K)

Type	Security	Shares	Price	Value
Sale	Common Stock	2,500	$220.84	$552K

Holdings After Transaction: Common Stock — 180,690 shares (Direct)

Footnotes (2)

1. F1. Sales were effected pursuant to Rule 10b5-1 trading plan dated 12/23/2024.
2. F2. Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).

FAQ

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

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

David M. Rothenstein, Ciena’s Senior Vice President and Chief Strategy Officer, reported the sale of 2,500 shares of Ciena common stock.

On what date did the CIEN insider stock sale occur and at what price?

The reported transaction occurred on 12/15/2025, with the 2,500 shares sold at a price of $220.84 per share.

How many CIEN shares does David M. Rothenstein own after this transaction?

After the sale, David M. Rothenstein beneficially owned 180,690 shares of Ciena common stock, including unvested RSUs and PSUs.

Was the CIEN insider sale conducted under a Rule 10b5-1 trading plan?

Yes. The filing states that the sales were effected pursuant to a Rule 10b5-1 trading plan dated 12/23/2024.

What is David M. Rothenstein’s role at Ciena Corporation (CIEN)?

David M. Rothenstein is identified as an officer of Ciena, serving as Senior Vice President and Chief Strategy Officer.

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

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Accepted by SEC EDGAR 12/16/2025 - 02:17 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).

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)
12/15/2025

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	12/15/2025		S		2,500(1)	D	$220.84	180,690(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 effected pursuant to Rule 10b5-1 trading plan dated 12/23/2024.

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

	By: Michelle Rankin For: David M Rothenstein	12/16/2025
	** 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.