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

Yes. The filing notes the sales were effected pursuant to a Rule 10b5-1 trading plan dated October 4, 2025. Such plans pre-schedule trades, helping separate routine diversification or liquidity events from discretionary market-timing decisions by senior executives like the CEO.

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

Filing Impact

(Very High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

CIENA CORP President and CEO Gary B. Smith reported an open-market sale of 2,952 shares of Common Stock at a weighted average price of $562.0513 per share. The transaction was executed under a pre-arranged Rule 10b5-1 trading plan, and he continues to hold 272,509 shares, which include unvested RSUs and PSUs.

Insider Trade Summary 10b5-1

Net Seller: 2,952 shares ($1,659,175)

Net Sell 1 txn

Insider SMITH GARY B

Role President, CEO

Sold 2,952 shs ($1.66M)

Type	Security	Shares	Price	Value
Sale	Common Stock	2,952	$562.0513	$1.66M

Holdings After Transaction: Common Stock — 272,509 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 $553.9000 to $574.2050. 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: $562.0513 per share Trading range: $553.9000–$574.2050 +1 more

4 metrics

Shares sold 2,952 shares Open-market sale on May 15, 2026

Weighted average sale price $562.0513 per share Common Stock sale

Trading range $553.9000–$574.2050 Range of individual sale prices

Shares held after transaction 272,509 shares Post-sale holdings including unvested RSUs and PSUs

Key Terms

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

4 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.

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.

weighted average sales price financial

"Reflects the weighted average sales price with transactions in a range of sales from $553.9000 to $574.2050."

Form 4 Insider Transactions: What Each Field Means →

05/19/2026 - 06:35 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)
05/15/2026

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	05/15/2026		S		2,952⁽¹⁾	D	$562.0513⁽²⁾	272,509⁽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 $553.9000 to $574.2050. 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	05/19/2026
	** 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 (CIEN) CEO Gary Smith report?

Gary B. Smith reported an open-market sale of 2,952 Ciena shares. The sale was executed at a weighted average price of $562.0513 per share under a pre-arranged Rule 10b5-1 trading plan, and he remains a substantial shareholder afterward.

At what price did Ciena (CIEN) shares trade in Gary Smith’s Form 4 sale?

The reported weighted average sale price was $562.0513 per Ciena share. Footnotes state actual trades occurred in a range from $553.9000 to $574.2050, with detailed price-by-price data available to the SEC upon request from the company or filer.

How many Ciena (CIEN) shares does Gary Smith hold after this Form 4 sale?

After selling 2,952 shares, Gary B. Smith holds 272,509 Ciena shares. Footnotes clarify this figure includes unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs), so it reflects both currently vested and certain unvested equity awards tied to his compensation.

What type of security did Gary Smith sell in this Ciena (CIEN) Form 4?

He sold Ciena Common Stock, classified as a non-derivative security in the Form 4. Non-derivative means actual shares rather than options or other derivatives, so the transaction directly reduces his share count while leaving any unexercised derivative awards unaffected by this sale.