CIEN Insider Sale: CEO Gary Smith Disposes 6,800 Shares Under 10b5-1

Rhea-AI Filing Summary

Insider sale reported by CIEN director and CEO Gary B. Smith. The Form 4 shows that on 09/15/2025 Mr. Smith sold 6,800 shares of CIENA common stock under a Rule 10b5-1 trading plan dated 09/11/2024 at a weighted average price of $136.2026, with individual trade prices ranging from $131.6550 to $138.2200.

Following the reported sale, Mr. Smith beneficially owns 298,357 shares, a total that explicitly includes unvested Restricted Stock Units and Performance Stock Units. The filing was signed on 09/16/2025 and states that full per-trade sale details will be provided to the SEC upon request.

Insights

Financial Analyst

TL;DR: Insider sold 6,800 shares via an existing 10b5-1 plan; remaining stake includes equity awards totaling 298,357 shares.

The sale of 6,800 shares at a weighted average of $136.2026 is a specific, disclosed disposition executed under a Rule 10b5-1 plan dated 09/11/2024, which typically provides an affirmative defense to insider trading claims when properly adopted. The transaction size relative to the total reported beneficial ownership is modest based on the numbers presented in the filing. The disclosure that the remaining 298,357 shares include unvested RSUs and PSUs clarifies that a portion of the reported stake is not freely marketable today. No additional performance metrics, option holdings, or other transactions are disclosed in this Form 4, limiting deeper valuation implications.

Corporate Governance Expert

TL;DR: Transaction is a routine 10b5-1 plan sale; disclosure aligns with standard Section 16 reporting practices.

The filing indicates proper use of a pre-established trading plan and provides required details including execution date, aggregated sale price range, and post-transaction beneficial ownership that includes restricted awards. Procedurally, the report appears complete for this single non-derivative disposal and signals adherence to governance protocols for insiders disposing shares under an approved plan. The note that per-trade pricing details can be supplied to the SEC reflects standard practice when weighted averages are reported on Form 4.

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
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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)
09/15/2025

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	09/15/2025		S		6,800(1)	D	$136.2026(2)	298,357(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 09/11/2024

2. Reflects the weighted average sales price with transactions in a range of sales from $131.6550 to $138.2200. 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	09/16/2025
	** 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.

FAQ

What did CIEN insider Gary B. Smith report on Form 4?

The Form 4 reports a sale of 6,800 shares on 09/15/2025 executed under a Rule 10b5-1 plan dated 09/11/2024.

At what price were the CIEN shares sold by Gary B. Smith?

The filing shows a weighted average sale price of $136.2026 with individual trade prices ranging from $131.6550 to $138.2200.

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

After the reported transactions Mr. Smith beneficially owns 298,357 shares, which include unvested RSUs and PSUs.

Was the sale covered by a 10b5-1 trading plan?

Yes. The filing states the sales were effected pursuant to a Rule 10b5-1 trading plan dated 09/11/2024.

Does the Form 4 include per-trade sale quantities at each price?

No. The Form 4 reports a weighted average price and states that full per-trade sale information will be provided to the SEC upon request.