Ciena director Nevens sells 3,738 shares, gifts 2,797

Both reported share counts include unvested RSUs, and the gifted shares were transferred without consideration.

Rhea-AI Filing Summary

CIENA CORP director Thomas Michael Nevens sold 3,738 shares of common stock at $359.04 per share on September 23, 2026, and gave 2,797 shares as a bona fide gift on September 24, 2026; he received no consideration for the gift. Both reported share counts include unvested Restricted Stock Units (RSUs). No Rule 10b5-1 plan is reported.

Insider Trade Summary

Net Seller: 3,738 shares

Net Sell 2 txns

Insider NEVENS THOMAS MICHAEL

Role Director

Sold 3,738 shs ($1.34M)

Type	Security	Shares	Price	Value
Gift	Common Stock F2, F1	2,797	--	--
Sale	Common Stock F1	3,738	$359.04	$1.34M

Holdings After Transaction: Common Stock — 3,492 shares (Direct)

Footnotes (2)

1. F1. Shares reported include unvested Restricted Stock Units (RSUs).
2. F2. These shares were given as a gift for which no consideration was received by the Reporting Person.

Key Figures

Shares sold: 3,738 shares Sale price: $359.04 per share Shares given as a gift: 2,797 shares

3 metrics

Shares sold 3,738 shares September 23, 2026

Sale price $359.04 per share September 23, 2026

Shares given as a gift 2,797 shares September 24, 2026

Key Terms

Restricted Stock Units (RSUs), Bona fide gift, non-derivative

3 terms

Restricted Stock Units (RSUs) financial

"unvested Restricted Stock Units (RSUs)"

Restricted stock units (RSUs) are a type of company promise to give employees shares of stock in the future, usually after certain conditions like working for a set time. They are like a gift promised today that you receive later, which can become valuable if the company's stock price goes up. RSUs matter because they are a way companies reward employees and can be a significant part of compensation.

Bona fide gift financial

"the bona fide gift of 2,797 shares"

A bona fide gift is a genuine, voluntary transfer of money, property, or benefits from one party to another made without expectation of repayment, services, or hidden conditions. Investors care because such gifts can affect company disclosures, related‑party transaction rules, tax treatment, and perceived conflicts of interest; think of it like someone giving you a present with no strings attached — but on a corporate scale, auditors and regulators need to verify it really is unconditional.

non-derivative financial

"the non-derivative Common Stock sale"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many CIEN shares did Thomas Michael Nevens sell, and at what price?

Thomas Michael Nevens sold 3,738 shares at $359.04 per share on September 23, 2026. The reported count includes unvested Restricted Stock Units (RSUs).

How many CIEN shares did Thomas Michael Nevens give as a gift?

He reported a bona fide gift of 2,797 shares on September 24, 2026, for which he received no consideration. The reported count includes unvested Restricted Stock Units (RSUs).

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/25/2026 - 03:21 PM Accepted by SEC EDGAR 09/25/2026 - 03:18 PM Learn about SEC filing dates

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).

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^*

NEVENS THOMAS MICHAEL

(Last) (First) (Middle)

C/O CIENA CORPORATION

8150 MAPLE LAWN BOULEVARD, SUITE 300

(Street)

FULTON MARYLAND 20759

(City) (State) (Zip)

UNITED STATES

(Country)

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
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/23/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	09/23/2026		S		3,738	D	$359.04	6,289(1)	D
Common Stock	09/24/2026		G		2,797	D	(2)	3,492(1)	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. Shares reported include unvested Restricted Stock Units (RSUs).

2. These shares were given as a gift for which no consideration was received by the Reporting Person.

	By: Michelle Rankin For: T. Michael Nevens	09/25/2026
	** 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.
* Form 4: SEC 1474 (03-26)