[Form 4] CIENA CORP Insider Trading Activity

Rhea-AI Filing Summary

Ciena Corp senior vice president Joseph Cumello sold 1,773 shares of common stock in an open-market transaction. The sale on March 27, 2026 was executed at an average price of $394.82 per share under a pre-arranged Rule 10b5-1 trading plan dated October 13, 2025.

Following this sale, Cumello directly owns 46,175 Ciena shares, which the filing notes include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs). The transaction represents a relatively small portion of his reported holdings and reflects a planned liquidity event rather than a discretionary trade.

Insider Trade Summary 10b5-1

Net Seller: 1,773 shares ($700,016)

Net Sell 1 txn

Insider Cumello Joseph

Role SVP, General Mgr. Blue Planet

Sold 1,773 shs ($700K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,773	$394.82	$700K

Holdings After Transaction: Common Stock — 46,175 shares (Direct)

Footnotes (1)

1. Sales were effected pursuant to Rule 10b5-1 trading plan dated 10/13/2025. Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).

Key Figures

Shares sold: 1,773 shares Sale price: $394.82 per share Shares owned after: 46,175 shares +1 more

4 metrics

Shares sold 1,773 shares Open-market sale on March 27, 2026

Sale price $394.82 per share Average price for the 1,773 shares sold

Shares owned after 46,175 shares Direct holdings after transaction, including unvested RSUs and PSUs

Trading plan date October 13, 2025 Date of Rule 10b5-1 trading plan governing the sale

Key Terms

Rule 10b5-1 trading plan, Restricted Stock Units (RSUs), Performance Stock Units (PSUs), open-market sale

4 terms

Rule 10b5-1 trading plan regulatory

"Sales were effected pursuant to Rule 10b5-1 trading plan dated 10/13/2025."

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

Restricted Stock Units (RSUs) financial

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

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.

Performance Stock Units (PSUs) financial

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

Performance stock units (PSUs) are a form of executive or employee pay that promise company shares only if pre-set performance goals are met over a defined period; think of them as a bonus paid in stock that arrives only when the company hits agreed targets. Investors watch PSUs because they affect the number of shares outstanding (dilution) and reveal how management’s pay is tied to financial or operational results, aligning incentives with shareholder outcomes.

open-market sale financial

"transaction_action: open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Form 4 Insider Transactions: What Each Field Means →

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^*

Cumello Joseph

(Last) (First) (Middle)

C/O CIENA CORPORATION

7035 RIDGE RD.

(Street)

HANOVER MARYLAND 21076-1426

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP, General Mgr. Blue Planet

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/27/2026

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	03/27/2026		S		1,773(1)	D	$394.82	46,175(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 10/13/2025.

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

	By: Michelle Rankin For: JOSEPH CUMELLO	03/30/2026
	** 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)

FAQ

What did Ciena (CIEN) executive Joseph Cumello report in this Form 4?

Joseph Cumello reported selling 1,773 shares of Ciena common stock in an open-market transaction. The sale occurred on March 27, 2026 and was executed at an average price of $394.82 per share under a Rule 10b5-1 trading plan.

At what price did Ciena (CIEN) shares sell in Joseph Cumello’s transaction?

The reported sale price was an average of $394.82 per share for 1,773 shares of Ciena common stock. This reflects the execution price disclosed for the open-market sale on March 27, 2026 in the Form 4 filing.

How many Ciena (CIEN) shares does Joseph Cumello hold after the sale?

After the transaction, Joseph Cumello is reported to directly own 46,175 Ciena shares. The filing notes that this amount includes unvested RSUs and PSUs, meaning both vested and certain unvested equity awards are combined in the reported total.

Was Joseph Cumello’s Ciena (CIEN) stock sale pre-planned?

Yes. The Form 4 states the sales were effected under a Rule 10b5-1 trading plan dated October 13, 2025. Such plans allow insiders to schedule trades in advance, helping separate routine portfolio management from short-term market timing decisions.

Does Joseph Cumello’s Ciena (CIEN) holding include RSUs and PSUs?

Yes. The filing specifies that the 46,175 shares reported as owned by Joseph Cumello include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs). These equity awards typically vest over time based on service or performance conditions.