Ciena (CIEN) Form 144 filing for proposed sale of 734 shares

Ciena (CIEN): A shareholder filed a Form 144 to sell up to 734 shares of common stock, with an aggregate market value of $124,310.24.

Accepted by SEC EDGAR 10/15/2025 - 04:02 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Ciena (CIEN): A shareholder filed a Form 144 to sell up to 734 shares of common stock, with an aggregate market value of $124,310.24.

The broker is Morgan Stanley Smith Barney LLC Executive Financial Services, and the shares are expected to be sold on or about 10/15/2025 on the NYSE. The filer reports acquiring 734 restricted shares from the issuer on 09/20/2025. Shares outstanding were 141,055,908; this is a baseline figure, not the amount being sold.

FAQ

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

What did Ciena (CIEN) file in this notice?

A Form 144 notice of proposed sale of common stock by a shareholder.

How many CIEN shares are proposed for sale under Form 144?

Up to 734 shares of common stock.

What is the aggregate market value of the proposed CIEN sale?

The filing lists an aggregate market value of $124,310.24.

When is the approximate sale date for the CIEN shares?

The filing states an approximate sale date of 10/15/2025.

Which broker is named for the CIEN Form 144 sale?

Morgan Stanley Smith Barney LLC Executive Financial Services, New York, NY.

On which exchange may the CIEN shares be sold?

The filing names the NYSE.

How and when were these CIEN shares acquired?

The filer reports restricted stock acquired from the issuer on 09/20/2025, amounting to 734 shares.

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

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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	0001998460
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	(410) 694-5700
Name of Person for Whose Account the Securities are To Be Sold	DINO DIPERNA
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	734	124310.24	141055908	10/15/2025	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	09/20/2025	Restricted Stock	ISSUER			734	09/20/2025	Not Applicable

* 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

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	10/15/2025
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	09/11/2024
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/ Dino Cosimo DiPerna
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)