CIEN Form 144: Holder Plans Sale of 2,482 Shares on NYSE

A holder of CIEN common stock filed a Form 144 notice covering a proposed sale of 2,482 shares of common stock through Morgan Stanley Smith Barney LLC on the NYSE, with an aggregate market value of 473,565.60.

Accepted by SEC EDGAR 11/17/2025 - 04:06 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

A holder of CIEN common stock filed a Form 144 notice covering a proposed sale of 2,482 shares of common stock through Morgan Stanley Smith Barney LLC on the NYSE, with an aggregate market value of 473,565.60. The shares were acquired from the issuer as restricted stock on multiple dates in 2023 and 2024. The notice also reports that the seller disposed of 734 shares of common stock during the past three months for gross proceeds of 124,310.24. The filing states that by signing, the seller represents that they are not aware of undisclosed material adverse information about the issuer.

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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	2482	473565.60	141055908	11/17/2025	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	06/20/2024	Restricted Stock	Issuer			648	06/20/2024	Not Applicable
Common	12/20/2023	Restricted Stock	Issuer			488	12/20/2023	Not Applicable
Common	09/20/2024	Restricted Stock	Issuer			698	09/20/2024	Not Applicable
Common	03/20/2024	Restricted Stock	Issuer			648	03/20/2024	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
DINO DIPERNA 7035 RIDGE ROAD HANOVER MD 21076	Common	10/15/2025	734	124310.24

144: Remarks and Signature

Remarks
Date of Notice	11/17/2025
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	07/11/2025
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/ Dino Cosimo DiPerna
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)