[Form 4] Ciena Corporation Insider Trading Activity

Rhea-AI Filing Summary

Gary B. Smith, President and CEO of Ciena Corporation and a company director, reported an insider sale on Form 4. On 09/02/2025 he disposed of 6,800 shares of CIEN common stock at a weighted average price of $92.9345, under a Rule 10b5-1 trading plan dated 09/11/2024. The sale price range reported was $90.61 to $93.60 and the filer noted full per-price details will be provided upon SEC request.

Following the reported transaction Mr. Smith beneficially owned 305,157 shares, which the filing states include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs). The Form 4 was signed on behalf of Mr. Smith on 09/03/2025.

Positive

• Transaction executed under a Rule 10b5-1 trading plan, which indicates the sale was prearranged
• Full disclosure provided including weighted average sale price and a note that per-price details are available upon SEC request
• Significant remaining beneficial ownership of 305,157 shares, including unvested RSUs and PSUs

Negative

• Insider disposition of 6,800 shares was reported, which reduces the reporting person’s direct share count
• Sale price range spanned $90.61 to $93.60, indicating multiple trade prices rather than a single execution price

Insights

Financial Analyst

TL;DR: CEO sold a small portion of holdings via a pre-established 10b5-1 plan; overall beneficial ownership remains substantial.

The reported disposition of 6,800 shares at a weighted average price of $92.9345 appears to be an orderly sale executed under a 10b5-1 plan dated 09/11/2024, which typically indicates prearranged trading rather than opportunistic timing. The filing discloses a remaining beneficial position of 305,157 shares, including unvested RSUs and PSUs, preserving executive alignment with long-term equity incentives. For investors assessing insider alignment, the material fact is the structured nature of the sale and the continued significant ownership stake.

Corporate Governance Expert

TL;DR: Disclosure is compliant and includes 10b5-1 plan reference; remaining holdings include unvested equity.

The Form 4 clearly identifies the reporting person as both officer and director and affirms the transaction was effected under a Rule 10b5-1 trading plan, which supports a defense against allegations of trading on material nonpublic information. The filing also specifies that the beneficial ownership total of 305,157 shares includes unvested RSUs and PSUs, which is important context for assessing actual vested voting and economic exposure. Signature and filing dates are provided, meeting disclosure formality requirements.

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^*

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)
09/02/2025

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	09/02/2025		S		6,800(1)	D	$92.9345(2)	305,157(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 $90.6100 to $93.6000. 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	09/03/2025
	** 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 filing reports a sale of 6,800 shares on 09/02/2025 executed under a Rule 10b5-1 trading 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 $92.9345 and a reported sale price range of $90.61 to $93.60.

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

Following the transaction the filing reports beneficial ownership of 305,157 shares, which include unvested RSUs and PSUs.

Was the sale preplanned or discretionary?

The Form 4 states the sales were effected pursuant to a Rule 10b5-1 trading plan dated 09/11/2024, indicating the transactions were prearranged.

When was the Form 4 signed and filed on behalf of Gary B. Smith?

The signature block shows the form was signed on behalf of Gary B. Smith on 09/03/2025.