CIENA (CIEN) insider files to sell 1,748 restricted shares under Rule 144

Rhea-AI Filing Summary

CIENA Corporation insider plans to sell recently acquired restricted stock under Rule 144. A holder intends to sell 1,748 shares of CIENA common stock through Morgan Stanley Smith Barney LLC on or around 01/02/2026 on the NYSE, with an aggregate market value of $421,268.00 for this planned sale. These shares were acquired as restricted stock from the issuer on 12/20/2025, with the same date shown for payment and the nature of payment stated as not applicable. The filing also notes that 140,854,735 shares of CIENA common stock were outstanding, providing context for the size of the transaction.

Insights

Equity markets and insider-transactions analyst

Routine Rule 144 notice for a modest CIENA insider stock sale.

The content describes a planned sale of 1,748 shares of CIENA common stock on the NYSE with an aggregate market value of $421,268.00. The shares are to be sold through Morgan Stanley Smith Barney LLC under Rule 144, which governs resale of restricted and control securities by affiliates and other holders.

The shares were acquired as restricted stock from the issuer on 12/20/2025, with the filing indicating the nature of payment as not applicable, consistent with equity compensation grants. The filing also states that 140,854,735 shares of common stock were outstanding, which frames this as a small transaction relative to total equity.

The signer represents that they are not aware of undisclosed material adverse information about CIENA, a standard Rule 144 representation. Overall, this is a routine administrative disclosure of a planned insider sale, and its ultimate impact depends on execution of the sale and broader market context not covered here.

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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
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	1748	421268.00	140854735	01/02/2026	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	Restricted Stock	ISSUER			1748	12/20/2025	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

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

What does the CIEN Form 144 filing disclose?

The filing discloses that an insider or affiliated holder of CIENA (CIEN) plans to sell 1,748 shares of CIENA common stock under Rule 144 on the NYSE through Morgan Stanley Smith Barney LLC.

How many CIENA shares are planned to be sold and at what aggregate value?

The notice states that 1,748 shares of CIENA common stock are to be sold, with an aggregate market value of $421,268.00 for this planned transaction.

When were the CIEN shares acquired and what was their nature?

The shares to be sold were acquired on 12/20/2025 as restricted stock from the issuer, with the same date listed for payment and the nature of payment described as not applicable.

On which exchange and through which broker will the CIEN shares be sold?

The filing identifies Morgan Stanley Smith Barney LLC Executive Financial Services as the broker and lists the NYSE as the exchange where the CIENA common shares are to be sold.

How many CIENA common shares were outstanding in relation to this Form 144 sale?

The filing states that there were 140,854,735 CIENA common shares outstanding, which provides context for the size of the planned sale of 1,748 shares.

What representation does the seller make in the CIEN Form 144 notice?

The person for whose account the securities are to be sold represents that they do not know of any material adverse information about CIENA's current or prospective operations that has not been publicly disclosed.