Insider at CIEN (NYSE: CIEN) plans 5,054-share common stock sale

Rhea-AI Filing Summary

A person associated with CIEN has filed a notice of intent to sell 5,054 shares of common stock. The planned sale is to be executed through Morgan Stanley Smith Barney LLC on the NYSE, with an indicated aggregate market value of 1,244,446.42. The issuer reports 140,854,735 common shares outstanding, giving context for the size of this transaction.

The shares to be sold were acquired from the issuer as performance shares and restricted stock on several dates in 2024 and 2025. Over the prior three months, the same seller disposed of 2,482 common shares for 473,565.60 in gross proceeds. By signing the notice, the seller represents that they do not know of any undisclosed material adverse information about the issuer’s current or prospective operations.

Insights

Insider transactions analyst

Routine Form 144 filing for a modest insider share sale.

This notice outlines a planned sale of 5,054 CIEN common shares through Morgan Stanley Smith Barney LLC on the NYSE, with an indicated aggregate market value of 1,244,446.42. The issuer reports 140,854,735 shares outstanding, suggesting the planned sale represents a small fraction of the total equity base.

The shares come from prior equity awards, including performance shares and restricted stock granted in 2024 and 2025. The filing also lists a prior sale of 2,482 shares over the last three months that generated 473,565.60 in gross proceeds. Overall, the disclosure reflects standard insider liquidity activity under Rule 144 rather than a transformative corporate or financial event.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	5054	1244446.42	140854735	01/15/2026	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	12/20/2025	Performance Shares	ISSUER			2272	12/20/2025	Not Applicable
Common	12/20/2025	Restricted Stock	ISSUER			920	12/20/2025	Not Applicable
Common	12/20/2024	Restricted Stock	ISSUER			895	12/20/2024	Not Applicable
Common	12/20/2024	Performance Shares	ISSUER			607	12/20/2024	Not Applicable
Common	09/20/2024	Restricted Stock	ISSUER			196	09/20/2024	Not Applicable
Common	03/20/2025	Restricted Stock	ISSUER			164	03/20/2025	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

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	11/17/2025	2482	473565.60

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

How many CIEN shares are planned to be sold under this Form 144?

The notice states an intention to sell 5,054 shares of CIEN common stock through Morgan Stanley Smith Barney LLC.

What is the indicated market value of the CIEN shares to be sold?

The filing reports an aggregate market value of 1,244,446.42 for the 5,054 common shares to be sold.

How many CIEN shares are outstanding compared to this planned sale?

The issuer lists 140,854,735 common shares outstanding, providing context for the relative size of the 5,054-share planned sale.

How were the CIEN shares being sold originally acquired?

The shares were acquired from the issuer as performance shares and restricted stock on several dates in 2024 and 2025.

Has this insider sold CIEN shares in the last three months?

Yes. Over the past three months, the seller disposed of 2,482 common shares for 473,565.60 in gross proceeds.

Which broker will handle the planned CIEN share sale?

The planned transaction will be executed through Morgan Stanley Smith Barney LLC on the NYSE.

What representation does the seller make about CIEN’s information disclosure?

By signing, the seller represents that they do not know any material adverse information about the issuer’s operations that has not been publicly disclosed.