[144] CIENA CORP SEC Filing

Rhea-AI Filing Summary

Ciena (CIEN) insider filed a Form 144 to sell 2,500 common shares. The planned sale is through Morgan Stanley Smith Barney LLC on the NYSE, with an aggregate market value of $479,275 and an approximate sale date of 11/17/2025. The 2,500 shares were acquired as restricted stock units from the issuer on 03/20/2023.

Over the prior three months, the same seller, identified as David Rothenstein, sold 2,500 common shares on 09/15/2025 for gross proceeds of $330,000 and another 2,500 shares on 10/15/2025 for gross proceeds of $425,543 under Rule 10b5-1 sales instructions. Shares outstanding were 141,055,908 at the time referenced for this notice.

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	2500	479275.00	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	03/20/2023	Restricted Stock Units	Issuer			2500	03/20/2023	N/A

* 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
10b5-1 Sales for DAVID ROTHENSTEIN 7035 Ridge Road Hanover MD 21076	Common	10/15/2025	2500	425543.00
10b5-1 Sales for DAVID ROTHENSTEIN 7035 Ridge Road Hanover MD 21076	Common	09/15/2025	2500	330000.00

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

How many CIEN shares are covered by this Form 144 notice?

The Form 144 notice for Ciena (CIEN) covers a proposed sale of 2,500 common shares, with an aggregate market value of $479,275.

When and where are the CIEN shares expected to be sold?

The 2,500 Ciena (CIEN) common shares are planned to be sold on or about 11/17/2025 on the NYSE through Morgan Stanley Smith Barney LLC.

How did the insider acquire the CIEN shares being sold?

The 2,500 Ciena shares covered by this notice were acquired as restricted stock units from the issuer on 03/20/2023, with 2,500 securities acquired on that date.

What CIEN insider sales occurred in the past three months?

For Ciena (CIEN), the seller identified as David Rothenstein sold 2,500 common shares on 09/15/2025 for $330,000 and 2,500 shares on 10/15/2025 for $425,543 in Rule 10b5-1 sales.

How many CIEN shares were outstanding in this Form 144 disclosure?

The Form 144 indicates that 141,055,908 Ciena common shares were outstanding as referenced in the securities information section.

Which broker is handling the CIEN Form 144 sale?

The planned sale of 2,500 Ciena (CIEN) common shares is to be executed through Morgan Stanley Smith Barney LLC Executive Financial Services at 1 New York Plaza, New York, NY 10004.