Planned 382-share sale at Ciena (NYSE: CIEN) follows 1,748 sold

Rhea-AI Filing Summary

An affiliate of the issuer has filed a notice of proposed sale of 382 shares of common stock through Morgan Stanley Smith Barney on the NYSE, with an approximate aggregate market value of $94,059.86 and an indicated sale date of 01/15/2026. The shares were acquired as restricted stock from the issuer on 12/20/2025, with the same date listed as the date of payment.

The filing also reports that 1,748 shares of common stock were sold on 01/02/2026 for gross proceeds of $421,268.00 by Sheela Kosaraju. The seller represents that they do not know of any undisclosed material adverse information about the issuer’s current or prospective operations when signing this notice.

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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	382	94059.86	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	Restricted Stock	ISSUER			382	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
SHEELA KOSARAJU 7035 RIDGE ROAD HANOVER MD 21076	Common	01/02/2026	1748	421268.00

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 this Form 144 filing for CIEN report?

It reports a planned sale of 382 shares of common stock on the NYSE, with an approximate aggregate market value of $94,059.86, by a person associated with the issuer.

When were the CIEN shares to be sold under this Form 144 acquired?

The 382 common shares to be sold were acquired as restricted stock from the issuer on 12/20/2025, which is also listed as the date of payment.

What prior CIEN stock sales are disclosed in this Form 144?

The notice states that 1,748 common shares were sold on 01/02/2026 by Sheela Kosaraju, generating gross proceeds of $421,268.00.

Which broker is handling the planned CIEN share sale in this Form 144?

The filing lists Morgan Stanley Smith Barney LLC Executive Financial Services, based at 1 New York Plaza, 8th Floor, New York, NY 10004, as the broker for the 382-share sale on the NYSE.

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

The seller represents that they do not know any material adverse information about the issuer’s current or prospective operations that has not been publicly disclosed when signing the notice.

How many CIEN shares are reported as outstanding in this Form 144 excerpt?

The table lists 140,854,735 common shares as the number of shares or other units outstanding for the issuer’s common stock.