CIENA insider 10b5-1 sales total $617K; new 2,500-share filing

Rhea-AI Filing Summary

Form 144 notice for CIENA CORP (CIEN) discloses a proposed sale of 2,500 common shares through Morgan Stanley Smith Barney on the NYSE with an aggregate market value of $328,200. The shares were originally acquired as Restricted Stock Units on 12/20/2022. The filing also reports three prior 10b5-1 plan sales by the same person (David Rothenstein) of 2,500 shares each on 06/16/2025, 07/15/2025, and 08/15/2025, generating gross proceeds of $185,328.25, $205,524.50, and $226,495.75 respectively (totaling $617,348.50). The issuer's shares outstanding are listed as 141,055,908. The filer certifies no undisclosed material adverse information and references reliance on a 10b5-1 trading plan where applicable.

Positive

• Complete disclosure of proposed sale, prior 10b5-1 sales, acquisition date, and broker details
• Sales executed under 10b5-1 trading plan, indicating prearranged transactions

Negative

• Insider sales recorded: 7,500 shares sold in the past three months for total gross proceeds of $617,348.50
• Proposed sale of 2,500 shares with aggregate market value of $328,200 (may be noted by investors)

Insights

Securities Analyst

TL;DR: Routine insider Form 144 showing scheduled 10b5-1 sales; disclosure is standard and not by itself material.

The filing documents a planned sale of 2,500 CIEN shares with prior 10b5-1 sales of 7,500 shares over three months, producing $617k in proceeds. For a company with 141,055,908 shares outstanding, these transactions represent a very small fraction of outstanding stock and appear to follow an established trading plan. The filing properly identifies acquisition as RSUs from 12/20/2022 and lists the broker and exchange. The disclosure meets Rule 144 reporting requirements and includes the seller's representation about lack of undisclosed material information.

Corporate Governance Expert

TL;DR: Insider sales under a 10b5-1 plan are disclosed; governance practice appears compliant but warrants routine monitoring.

The notice names the selling individual and provides dates, amounts, and gross proceeds for recent 10b5-1 executions, plus details of the proposed sale. The acquisition source is documented as Restricted Stock Units, which supports standard post-vesting dispositions. While the filing itself is procedural and compliant, stakeholders may track aggregate insider sales over time for governance context; this single filing does not indicate governance breach or regulatory concern.

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	328200.00	141055908	09/15/2025	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	12/20/2022	Restricted Stock Units	Issuer			2500	12/20/2022	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	08/15/2025	2500	226495.75
10b5-1 Sales for DAVID ROTHENSTEIN 7035 Ridge Road Hanover MD 21076	Common	07/15/2025	2500	205524.50
10b5-1 Sales for DAVID ROTHENSTEIN 7035 Ridge Road Hanover MD 21076	Common	06/16/2025	2500	185328.25

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 disclose about proposed insider sales?

The Form 144 shows a proposed sale of 2,500 CIEN common shares via Morgan Stanley Smith Barney on the NYSE with an aggregate market value of $328,200.

Who is the seller and how many shares were sold recently according to the filing?

The filing lists David Rothenstein as the seller and reports three prior 10b5-1 sales of 2,500 shares each on 06/16/2025, 07/15/2025, and 08/15/2025.

How much did the recent 10b5-1 sales generate in gross proceeds?

The three reported 10b5-1 sales generated gross proceeds of $185,328.25, $205,524.50, and $226,495.75, totaling $617,348.50.

When were the shares being sold originally acquired?

The securities to be sold were acquired as Restricted Stock Units on 12/20/2022.

How large is this sale relative to CIEN shares outstanding?

The filing shows 141,055,908 shares outstanding; the proposed 2,500-share sale is a very small fraction of that total.