CIEN insider sale notice: 1,863 RSUs valued at $255,548 scheduled for 09/26/2025

Rhea-AI Filing Summary

CIENA CORP (CIEN) Form 144 disclosure: This notice reports a proposed sale of 1,863 common shares (restricted stock units) delivered on 09/20/2025, with an aggregate market value of $255,547.71, to be sold through Morgan Stanley Smith Barney on the NYSE approximately on 09/26/2025. The filer also disclosed prior 10b5-1 sales of 2,044 shares on 06/27/2025 for gross proceeds of $166,862.14. The securities were acquired from the issuer as RSUs and payment is noted as completed on the acquisition date.

Positive

• Transparent disclosure of a proposed sale of 1,863 shares with stated aggregate market value
• Filing shows acquisition as RSUs from the issuer, with payment dated the same day as acquisition
• Previous 10b5-1 sales disclosed, indicating prior compliance with an automated trading arrangement

Negative

• Insider selling activity (1,863 proposed shares and 2,044 sold previously) could be viewed negatively by some investors
• Form lacks detail on any 10b5-1 plan adoption date, so external readers cannot confirm timing or safeguards from this filing alone

Insights

Securities Analyst

TL;DR: Routine insider sale notice for a small number of RSUs, disclosed via Form 144.

This filing records a proposed sale of 1,863 shares derived from restricted stock units and reports a recent 10b5-1 sale of 2,044 shares. The disclosed aggregate values ($255,547.71 and $166,862.14) indicate transactions of modest size relative to the issuer's stated outstanding shares (141,055,908), suggesting limited market impact. The use of a broker and the Form 144 filing demonstrate compliance with Rule 144 procedures for restricted or control securities sales.

Corporate Governance Expert

TL;DR: Disclosure aligns with regulatory requirements; amount sold is small versus total outstanding shares.

The form shows acquisition as RSUs from the issuer and declares no unusual payment arrangements. A prior 10b5-1 sale is listed, but the form does not provide a plan adoption date or other plan details. From a governance perspective, the document is procedural and fulfills the insider's obligation to notify the market of proposed sales under Rule 144.

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	1863	255547.71	141055908	09/26/2025	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	09/20/2025	Restricted Stock Units	Issuer			1863	09/20/2025	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 JOSEPH CUMELLO 7035 Ridge Road Hanover MD 21076	Common	06/27/2025	2044	166862.14

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 did CIEN disclose in this Form 144 filing?

The filer disclosed a proposed sale of 1,863 common shares (RSUs) valued at $255,547.71, to be sold via Morgan Stanley Smith Barney on the NYSE around 09/26/2025.

How many CIEN shares were sold in the prior 10b5-1 transaction?

The filing shows prior 10b5-1 sales of 2,044 shares on 06/27/2025 for gross proceeds of $166,862.14.

How were the 1,863 shares acquired according to the filing?

The securities were acquired as Restricted Stock Units (RSUs) from the issuer on 09/20/2025.

What broker will execute the proposed CIEN sale?

The broker listed is Morgan Stanley Smith Barney LLC, located at 1 New York Plaza, 8th Floor, New York, NY.

Is the proposed sale material relative to CIEN's outstanding shares?

The filing lists 141,055,908 shares outstanding; the proposed sale of 1,863 shares is a very small fraction of that total, implying limited market significance.