Ciena (NYSE: CIEN) CEO sells 2,952 shares in preplanned trade

Rhea-AI Filing Summary

Ciena Corporation’s President and CEO Gary B. Smith reported an open-market sale of company stock. On this Form 4, he sold 2,952 shares of Ciena common stock on March 16, 2026 at a weighted average price of $359.5273 per share.

The sales were executed under a pre-arranged Rule 10b5-1 trading plan dated October 4, 2025, meaning the trades were scheduled in advance. After this transaction, Smith directly holds 293,084 Ciena shares, which include unvested Restricted Stock Units and Performance Stock Units. The sale price reflects multiple trades in a range from $349.4950 to $366.5750.

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

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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)
03/16/2026

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	03/16/2026		S		2,952(1)	D	$359.5273(2)	293,084(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 $349.4950 to $366.5750. 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	03/17/2026
	** 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).
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 Ciena (CIEN) CEO Gary B. Smith report in this Form 4?

Gary B. Smith reported selling 2,952 shares of Ciena common stock in an open-market transaction. The filing shows this as a routine insider sale, with details on price, date, trading plan, and his remaining direct holdings.

How many Ciena (CIEN) shares did the CEO sell and at what price?

The CEO sold 2,952 shares of Ciena common stock at a weighted average price of $359.5273 per share. Footnotes state individual trades occurred within a price range from $349.4950 to $366.5750 across multiple transactions.

Were Gary B. Smith’s Ciena (CIEN) share sales under a Rule 10b5-1 plan?

Yes. A footnote states the sales were effected pursuant to a Rule 10b5-1 trading plan dated October 4, 2025. Such plans are pre-arranged, indicating the timing of the trades was scheduled in advance rather than decided spontaneously.

How many Ciena (CIEN) shares does the CEO hold after this transaction?

After the reported sale, Gary B. Smith directly owns 293,084 Ciena shares. A footnote clarifies that this figure includes unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs) along with other directly held common shares.

What type of transaction is shown in this Ciena (CIEN) Form 4?

The Form 4 shows a non-derivative open-market sale of Ciena common stock coded as “S.” It is classified as an open-market sale transaction, with no accompanying option exercise or derivative activity reported in the derivative summary section.

Does this Ciena (CIEN) Form 4 include any derivative or option exercises?

No. The transaction summary lists zero derivative exercises and the derivative summary is empty. The only reported activity is the sale of 2,952 shares of common stock, with no options, warrants, or other derivative securities shown in this filing.