Ciena (CIEN) CEO Gary B. Smith reports 83,552-share Rule 10b5-1 stock sale

Rhea-AI Filing Summary

CIENA Corporation President and CEO Gary B. Smith, who also serves as a director, reported an open-market sale of company common stock. On 01/05/2026, he sold 83,552 shares of CIENA common stock in a transaction coded as a sale. The filing states a weighted average sales price of $229.4399 per share, with individual trades executed in a price range from $223.7300 to $252.0450. The sale was carried out under a Rule 10b5-1 trading plan dated 10/04/2025, indicating the trades were pre-arranged. Following this transaction, Smith beneficially owns 307,885 shares directly, which the filing notes include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).

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
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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^*

SMITH GARY B

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President, CEO

3. Date of Earliest Transaction (Month/Day/Year)
01/05/2026

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	01/05/2026		S		83,552(1)	D	$229.4399(2)	307,885(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 affected pursuant to Rule 10b5-1 trading plan dated 10/04/2025.

2. Reflects the weighted average sales price with transactions in a range of sales from $223.7300 to $252.0450. 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: Gary B Smith	01/06/2026
	** 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 (CIEN) disclose for Gary B. Smith?

CIENA disclosed that President, CEO, and director Gary B. Smith sold 83,552 shares of CIENA common stock in an open-market transaction on 01/05/2026.

At what price did Gary B. Smith sell CIENA (CIEN) shares?

The filing reports a weighted average sales price of $229.4399 per share, with individual sales occurring in a range from $223.7300 to $252.0450.

How many CIENA (CIEN) shares does Gary B. Smith own after the reported sale?

After the reported transaction, Gary B. Smith beneficially owns 307,885 shares of CIENA common stock directly, including unvested RSUs and PSUs.

Was the CIENA (CIEN) insider sale made 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 10/04/2025, indicating the transactions were pre-arranged.

What role does Gary B. Smith hold at CIENA (CIEN)?

Gary B. Smith is identified as a director and an officer of CIENA, serving as President and CEO.

How were the CIENA (CIEN) insider trades priced within the reported range?

The filing notes that the reported price is a weighted average and that, upon SEC request, full details of the number of shares sold at each separate sales price between $223.7300 and $252.0450 will be provided.