Ciena insider plans sale of 2,500 shares

Ciena Corporation (CIEN) insider David Rothenstein filed a notice to potentially sell 2,500 shares of common stock through Morgan Stanley Smith Barney LLC Executive Financial Services on the NYSE, with an aggregate value listed as $1,106,975.00.

Rhea-AI Filing Summary

Ciena Corporation (CIEN) insider David Rothenstein filed a notice to potentially sell 2,500 shares of common stock through Morgan Stanley Smith Barney LLC Executive Financial Services on the NYSE, with an aggregate value listed as $1,106,975.00. The shares relate to Restricted Stock Units dated 09/20/2021. The filing also lists prior Rule 10b5-1 plan sales of 2,500 shares each on 05/15/2026 for $1,405,968.75, 06/15/2026 for $1,142,672.50, and 07/15/2026 for $1,052,284.25.

Key Figures

Shares to be sold: 2,500 shares Aggregate value of planned sale: $1,106,975.00 Sale on 05/15/2026: 2,500 shares for $1,405,968.75 +2 more

5 metrics

Shares to be sold 2,500 shares Common stock covered by current Form 144 notice

Aggregate value of planned sale $1,106,975.00 Value for 2,500 CIEN common shares in current notice

Sale on 05/15/2026 2,500 shares for $1,405,968.75 10b5-1 sale listed in past 3 months

Sale on 06/15/2026 2,500 shares for $1,142,672.50 10b5-1 sale listed in past 3 months

Sale on 07/15/2026 2,500 shares for $1,052,284.25 10b5-1 sale listed in past 3 months

Key Terms

Restricted Stock Units, 10b5-1 Sales, Form 144, Executive Financial Services

4 terms

Restricted Stock Units financial

"Common | 09/20/2021 | Restricted Stock Units | Issuer"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

10b5-1 Sales regulatory

"10b5-1 Sales for DAVID ROTHENSTEIN 7035 Ridge Road"

10b5-1 sales are pre-arranged stock-trading plans that let company insiders automatically buy or sell shares according to a fixed schedule or formula, even if they later learn confidential information. Think of it as setting up an automatic thermostat for trades: it creates a clear, documented path that can protect insiders from insider-trading accusations and gives investors a signal about predictable insider activity—though it can also simply be a way for insiders to diversify or raise cash.

Form 144 regulatory

"144: Securities To Be Sold Common | 09/20/2021"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Executive Financial Services financial

"Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza"

FAQ

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

What does the CIEN Form 144 filing by David Rothenstein disclose?

The Form 144 filing discloses a potential sale of 2,500 CIEN common shares with an aggregate value of $1,106,975.00, related to Restricted Stock Units dated 09/20/2021, to be executed through Morgan Stanley Smith Barney LLC.

How many CIEN shares is David Rothenstein planning to sell under this notice?

The filing covers a planned sale of 2,500 CIEN common shares. These shares are tied to Restricted Stock Units granted on 09/20/2021 and are to be sold through Morgan Stanley Smith Barney LLC Executive Financial Services.

What prior CIEN stock sales are listed for David Rothenstein in the last three months?

The filing lists three prior sales of 2,500 CIEN shares each under a 10b5-1 plan on 05/15/2026, 06/15/2026, and 07/15/2026, for $1,405,968.75, $1,142,672.50, and $1,052,284.25, respectively.

What is the aggregate dollar value of the new CIEN shares covered by this Form 144?

The Form 144 lists an aggregate value of $1,106,975.00 for the 2,500 CIEN common shares to be sold. This figure reflects the value used for the proposed sale covered by the notice.

What type of equity award is associated with the CIEN shares in this Form 144?

The 2,500 CIEN shares covered by this Form 144 are associated with Restricted Stock Units dated 09/20/2021. The issuer is listed as Ciena, and the RSUs are the source of the underlying common shares.

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

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Accepted by SEC EDGAR 08/14/2026 - 04:31 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001444157
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	CIENA CORPORATION
SEC File Number	001-36250
Address of Issuer	7035 Ridge Road Hanover MARYLAND 21076
Phone	4106945700
Name of Person for Whose Account the Securities are To Be Sold	DAVID ROTHENSTEIN
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	2500	1106975.00	141552922	08/14/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/20/2021	Restricted Stock Units	Issuer			2500	09/20/2021	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for DAVID ROTHENSTEIN 7035 Ridge Road Hanover MD 21076	Common	07/15/2026	2500	1052284.25
10b5-1 Sales for DAVID ROTHENSTEIN 7035 Ridge Road Hanover MD 21076	Common	06/15/2026	2500	1142672.50
10b5-1 Sales for DAVID ROTHENSTEIN 7035 Ridge Road Hanover MD 21076	Common	05/15/2026	2500	1405968.75

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted stock units during the period of 09/20/2021 through 12/20/2024.
Date of Notice	08/14/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	10/10/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ David Rothenstein
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)