CIEN Form 4: Gary B. Smith disposes of 6,800 shares under 10b5-1

Rhea-AI Filing Summary

Gary B. Smith, who is listed as President, CEO and a Director of CIENA CORP (CIEN), reported a sale of common stock on 10/01/2025. The filing shows 6,800 shares were disposed of under transaction code S at a weighted average price of $149.8764, leaving 282,070 shares beneficially owned after the sale. The filing states the sales were effected pursuant to a Rule 10b5-1 trading plan dated 9/11/2024. The reported share total includes unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs). The Form 4 was signed on 10/02/2025.

Positive

• Sale executed under Rule 10b5-1 trading plan dated 9/11/2024
• Reporting person retains 282,070 shares after the transaction

Negative

• Disposition of 6,800 shares
• Weighted average sale price reported as $149.8764

Insights

Corporate Governance Analyst

Insider maintains significant ownership while using a pre-established trading plan.

The Form 4 confirms Gary B. Smith holds 282,070 shares after selling 6,800 shares. The filing explicitly states the sale was executed under a Rule 10b5-1 plan dated 9/11/2024, which documents pre-authorized trading to avoid timing issues.

This is a governance-relevant disclosure because it clarifies the trade was pre-planned rather than opportunistic.

Equity Trading Analyst

Sale details: 6,800 shares sold at a weighted average of $149.8764 on 10/01/2025.

The Form 4 provides the exact weighted average sale price range ($143.33 to $151.85) and notes that full per-price breakdown will be supplied to the SEC on request. The filing also identifies the shares reported include unvested RSUs and PSUs, which affects the composition of remaining ownership.

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).

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)
10/01/2025

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	10/01/2025		S		6,800(1)	D	$149.8764(2)	282,070(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 9/11/2024.

2. Reflects the weighted average sales price with transactions in a range of sales from $143.3300 to $151.8500. 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	10/02/2025
	** 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 did CIEN insider Gary B. Smith report on Form 4?

The Form 4 reports a sale of 6,800 common shares on 10/01/2025, executed under a Rule 10b5-1 plan dated 9/11/2024.

How many CIEN shares does Gary B. Smith beneficially own after the sale?

The filing shows 282,070 shares beneficially owned following the reported transaction, including unvested RSUs and PSUs.

At what price were the CIEN shares sold?

The sale reflects a weighted average price of $149.8764, with individual sales ranging from $143.33 to $151.85.

Was the sale part of a pre-established trading plan?

Yes. The Form 4 states sales were effected pursuant to a Rule 10b5-1 trading plan dated 9/11/2024.

Who signed the Form 4 for Gary B. Smith and when?

The filing was signed by Michelle Rankin on behalf of Gary B. Smith on 10/02/2025.