Ciena EVP Rothenstein sells 2,500 shares at $330

Ciena’s chief strategy officer sold 2,500 shares under a pre-arranged Rule 10b5-1 trading plan and continues to hold 177,731 shares, including unvested equity awards.

Available on EDGAR 09/17/2026 - 04:23 PM EDT Accepted by SEC EDGAR 09/17/2026 - 04:22 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

CIENA CORP (CIEN) reports that EVP & Chief Strategy Officer David M. Rothenstein sold 2,500 shares of common stock on September 15, 2026 in an open-market transaction under a Rule 10b5-1 trading plan. The weighted average sale price was $330.4833 per share, and he now holds 177,731 shares, which include unvested RSUs and PSUs.

Insider Trade Summary 10b5-1

Net Seller: 2,500 shares

Net Sell 1 txn

Insider Rothenstein David M

Role EVP & Chief Strategy Officer

Sold 2,500 shs ($826K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2, F3	2,500	$330.4833	$826K

Holdings After Transaction: Common Stock — 177,731 shares (Direct)

Footnotes (3)

1. F1. Sales were affected pursuant to Rule 10b5-1 trading plan dated 10/10/2025.
2. F2. Reflects the weighted average sales price with transactions in a range of sales from $321.4000 to $335.4100. Upon request by the SEC, full information regarding the number of shares sold at each separate sales price will be provided.
3. F3. Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).

Key Figures

Shares sold: 2,500 shares Weighted average sale price: $330.4833 per share Sale price range: $321.40–$335.41 per share +2 more

5 metrics

Shares sold 2,500 shares Common stock sold by EVP & Chief Strategy Officer on September 15, 2026

Weighted average sale price $330.4833 per share Average price for the 2,500 CIEN shares sold

Sale price range $321.40–$335.41 per share Range of individual trade prices included in the weighted average

Shares held after transaction 177,731 shares Direct holdings after the sale, including unvested RSUs and PSUs

Rule 10b5-1 plan date October 10, 2025 Date of the trading plan under which the sale was effected

Key Terms

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

4 terms

Rule 10b5-1 trading plan regulatory

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

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"

Restricted Stock Units (RSUs) financial

"Shares reported include 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.

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.

FAQ

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

What insider transaction did CIEN report for David M. Rothenstein?

CIENA CORP reported that EVP & Chief Strategy Officer David M. Rothenstein sold 2,500 shares of common stock on September 15, 2026 in an open-market transaction under a Rule 10b5-1 trading plan.

At what price did the CIEN insider sell the 2,500 shares?

The 2,500 CIEN shares were sold at a weighted average price of $330.4833 per share, with individual sale prices ranging from $321.40 to $335.41.

How many CIEN shares does David M. Rothenstein hold after this sale?

After the sale, David M. Rothenstein holds 177,731 CIEN shares directly. This reported balance includes unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).

Was the September 15, 2026 CIEN insider sale under a Rule 10b5-1 plan?

Yes. The filing states the sales were effected pursuant to a Rule 10b5-1 trading plan dated October 10, 2025, and the Rule 10b5-1 plan checkbox is affirmed for this Form 4.

What was the trading range for the CIEN shares sold on September 15, 2026?

The filing reports that the weighted average price of $330.4833 reflects trades in a price range from $321.40 to $335.41 per share, and detailed per-price share counts are available to the SEC upon request.

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

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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^*

Rothenstein David M

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP & Chief Strategy Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/15/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/15/2026		S		2,500(1)	D	$330.4833(2)	177,731(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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

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

2. Reflects the weighted average sales price with transactions in a range of sales from $321.4000 to $335.4100. 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: David Rothenstein	09/16/2026
	** 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)