Was the CIEN CEO’s share sale under a Rule 10b5-1 trading plan?

Yes. The filing states the sales were effected under a Rule 10b5-1 trading plan dated October 4, 2025. Such plans are pre-arranged trading programs that allow insiders to sell shares according to predetermined instructions, helping separate trading decisions from day-to-day information.

Ciena (NYSE: CIEN) CEO sells 2,952 shares under Rule 10b5-1 plan

Filing Impact

(Very High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

CIENA CORP President and CEO Gary B. Smith sold 2,952 shares of common stock in an open-market transaction. The shares were sold on May 1, 2026 at a weighted average price of $537.7421 per share, under a pre-arranged Rule 10b5-1 trading plan dated October 4, 2025.

After this sale, Smith directly holds 275,461 shares, which include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs). The sale price reflects trades within a range from $521.9800 to $548.9450 per share.

Insider Trade Summary 10b5-1

Net Seller: 2,952 shares ($1,587,415)

Net Sell 1 txn

Insider SMITH GARY B

Role President, CEO

Sold 2,952 shs ($1.59M)

Type	Security	Shares	Price	Value
Sale	Common Stock	2,952	$537.7421	$1.59M

Holdings After Transaction: Common Stock — 275,461 shares (Direct, null)

Footnotes (1)

Sales were affected pursuant to Rule 10b5-1 trading plan dated 10/04/2025. Reflects the weighted average sales price with transactions in a range of sales from $521.9800 to $548.9450. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided. Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).

Key Figures

Shares sold: 2,952 shares Weighted average sale price: $537.7421 per share Post-transaction holdings: 275,461 shares +2 more

5 metrics

Shares sold 2,952 shares Open-market sale on May 1, 2026

Weighted average sale price $537.7421 per share Common stock sale on May 1, 2026

Post-transaction holdings 275,461 shares Common stock held directly after transaction, including RSUs/PSUs

Sale price range low $521.9800 per share Lowest price within reported sale range

Sale price range high $548.9450 per share Highest price within reported sale range

Key Terms

Rule 10b5-1 trading plan, weighted average sales price, Restricted Stock Units (RSUs), Performance Stock Units (PSUs), +1 more

5 terms

Rule 10b5-1 trading plan regulatory

"Sales were affected pursuant to Rule 10b5-1 trading plan dated 10/04/2025."

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.

weighted average sales price financial

"Reflects the weighted average sales price with transactions in a range of sales from $521.9800 to $548.9450."

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" with transaction_code "S" for Common Stock."

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 →

05/04/2026 - 06:04 PM

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^*

SMITH GARY B

(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)

X	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	President, CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/01/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/01/2026		S		2,952⁽¹⁾	D	$537.7421⁽²⁾	275,461⁽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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

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 $521.9800 to $548.9450. 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	05/04/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did CIENA CORP (CIEN) report for CEO Gary B. Smith?

CIENA’s CEO Gary B. Smith reported an open-market sale of 2,952 common shares. The transaction occurred on May 1, 2026, and was disclosed on a Form 4, detailing price ranges, remaining holdings, and that it was executed under a pre-arranged Rule 10b5-1 trading plan.

At what price did the CIEN CEO sell his CIENA CORP shares?

Gary B. Smith sold 2,952 CIENA CORP shares at a weighted average price of $537.7421. Footnotes state the trades occurred within a range from $521.9800 to $548.9450 per share, and full breakdowns by price level are available to the SEC upon request.

How many CIENA CORP (CIEN) shares does the CEO hold after this Form 4 sale?

Following the reported sale, Gary B. Smith beneficially owns 275,461 CIENA CORP common shares directly. Footnotes clarify that this figure includes unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs), so it reflects both currently vested and certain unvested equity awards.

What type of security did CIENA CORP’s CEO sell in this Form 4 filing?

The transaction involved CIENA CORP common stock, classified as a non-derivative security on the Form 4. No options or other derivative securities were exercised or converted in this filing, and the derivativeSummary section shows no remaining derivative positions reported here.

How large was the CIENA CORP CEO’s Form 4 sale compared with his remaining holdings?

Gary B. Smith sold 2,952 CIENA CORP common shares and held 275,461 shares afterward. This indicates the reported sale represents a relatively small portion of his disclosed post-transaction holdings, which include both vested shares and unvested RSUs and PSUs.