CIEN Form 144: Proposed Sale of 8,461 Shares ($1.19M)

CIENA Corporation (CIEN) filed a Form 144 notifying the proposed sale of 8,461 shares of common stock through Morgan Stanley Smith Barney LLC, with an aggregate market value of $1,185,555.32.

Rhea-AI Filing Summary

CIENA Corporation (CIEN) filed a Form 144 notifying the proposed sale of 8,461 shares of common stock through Morgan Stanley Smith Barney LLC, with an aggregate market value of $1,185,555.32. The shares are scheduled for sale on or about 09/24/2025 on the NYSE. The filer acquired the shares as restricted stock on 03/20/2016 from the issuer and paid in full on that date. The filing reports 141,055,908 shares outstanding and states there were no securities sold by the filer in the past three months. The notice includes the standard representation that the seller is not aware of undisclosed material adverse information.

Positive

• Full compliance disclosure: filing identifies broker, sale date, and required seller certifications

Negative

• None.

Insights

Securities Analyst

TL;DR: Routine Rule 144 notice for the proposed sale of 8,461 restricted shares—discloses broker, timing, and original grant date.

The filing documents a planned sale under Rule 144 rather than an open-market issuance or company-led transaction. Key facts: 8,461 shares, $1,185,555.32 aggregate value, broker identified as Morgan Stanley Smith Barney LLC, and an approximate sale date of 09/24/2025. The shares were acquired as restricted stock on 03/20/2016, indicating a long-held grant now being cleared for sale under resale rules. No sales in the prior three months are reported, and the filer affirms no undisclosed material adverse information.

Corporate Governance Specialist

TL;DR: Compliance-focused disclosure showing insider or related-party sale intent, with required certifications and broker details.

The Form 144 supplies required compliance elements: seller representation regarding material information and broker details for execution. It lists the issuer’s total shares outstanding at 141,055,908, which helps contextualize the proposed sale size. The source of the shares is stated as a restricted stock grant from the issuer dated 03/20/2016, and there are no reported aggregated sales in the preceding three months. This is a standard disclosure to enable resale under Rule 144 and does not by itself indicate corporate action or change in control.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does CIEN's Form 144 notify?

The form notifies a proposed sale of 8,461 common shares with an aggregate market value of $1,185,555.32 to be sold approximately on 09/24/2025 on the NYSE.

Who is the broker handling the sale in the CIEN Form 144?

The broker listed is Morgan Stanley Smith Barney LLC, Executive Financial Services, 1 New York Plaza, 8th Floor, New York, NY.

When were the securities acquired that are being sold?

The securities were acquired as restricted stock on 03/20/2016 from the issuer, with payment dated 03/20/2016.

Has the filer sold other CIEN securities in the past three months?

The filing states "Nothing to Report" for securities sold during the past three months by the person for whose account the securities are to be sold.

How many CIEN shares are outstanding per the filing?

The filing reports 141,055,908 shares outstanding.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 09/24/2025 - 04:21 PM Learn about SEC filing dates

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	0001403694
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	CIENA CORPORATION
SEC File Number	001-36250
Address of Issuer	7035 RIDGE ROAD HANOVER MARYLAND 21076
Phone	(410) 694-5700
Name of Person for Whose Account the Securities are To Be Sold	Bruce Claflin
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	Director

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	8461	1185555.32	141055908	09/24/2025	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	03/20/2016	Restricted Stock	Issuer			8461	03/20/2016	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	09/24/2025
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	/s/ Bruce Laird Claflin
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)