[Form 4] Ciena Corporation Insider Trading Activity

Rhea-AI Filing Summary

Gage Brodie, SVP Global Products & Supply at Ciena Corporation (CIEN), reported a sale of company stock under a pre-established Rule 10b5-1 trading plan. On 08/15/2025 he disposed of 350 shares of Common Stock at $90.94 per share. After the sale he beneficially owned 43,268 shares, which the filing states include unvested Restricted Stock Units and Performance Stock Units. The transaction was reported on Form 4 and the filing is signed on behalf of Brodie by Michelle Rankin on 08/18/2025.

Positive

• Transaction executed under a Rule 10b5-1 trading plan, indicating the sale was preplanned and compliant with insider trading rules.
• Filing discloses unvested RSUs and PSUs within the beneficial ownership total, providing clarity on equity holdings.

Negative

• Reporting person reduced direct holdings by selling 350 shares on 08/15/2025 at $90.94 per share.

Insights

Corporate Governance Expert

TL;DR: Officer sold a small number of shares under a 10b5-1 plan, a routine, preplanned insider transaction with no immediate governance red flags.

The Form 4 shows a sale of 350 shares executed on 08/15/2025 pursuant to a Rule 10b5-1 trading plan dated 09/06/2024. Use of a documented 10b5-1 plan typically indicates the transaction was preauthorized and intended to provide an affirmative defense against insider trading allegations. The filing discloses remaining beneficial ownership of 43,268 shares including unvested RSUs and PSUs, which is relevant to assessing ongoing executive alignment with shareholder interests. The disclosure appears complete and timely based on the provided dates.

Securities Analyst

TL;DR: Small-scale disposition by a senior officer; transaction size and plan-based execution suggest limited market or valuation signal.

The reported disposition of 350 shares at $90.94 is modest in absolute terms relative to the reported 43,268 shares still beneficially owned. The filing explicitly states the sale was effected under a 10b5-1 plan, reducing the likelihood the transaction conveys new material information about company prospects. The inclusion of unvested RSUs and PSUs in the ownership total is important when modeling executive stake dilution and future vesting-related share supply.

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^*

Gage Brodie

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP Global Products & Supply

3. Date of Earliest Transaction (Month/Day/Year)
08/15/2025

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	08/15/2025		S		350(1)	D	$90.94	43,268(2)	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 effected pursuant to Rule 10b5-1 trading plan dated 09/06/2024.

2. Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).

	By: Michelle Rankin For: Brodie Gage	08/18/2025
	** 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 transaction did CIEN insider Gage Brodie report on Form 4?

He sold 350 shares of Ciena common stock on 08/15/2025 at a price of $90.94 per share, reported on Form 4.

Was the sale by Gage Brodie preplanned under a 10b5-1 plan?

Yes. The Form 4 states the sales were effected pursuant to a Rule 10b5-1 trading plan dated 09/06/2024.

How many Ciena shares does Brodie beneficially own after the reported transaction?

43,268 shares beneficially owned following the reported sale; this total includes unvested RSUs and PSUs.

What is Gage Brodie's role at Ciena as listed on the filing?

SVP Global Products & Supply and an officer of Ciena Corporation.

When was the Form 4 for this transaction signed or filed?

The form is dated 08/18/2025 with a signature executed by Michelle Rankin on behalf of Brodie.