CIEN insider sale disclosed: 2,500 shares, prior 10b5-1 sales detailed

Rhea-AI Filing Summary

CIEN Form 144 notice for proposed insider sale. The filing shows a proposed sale of 2,500 shares of common stock via Morgan Stanley Smith Barney, with an aggregate market value of $228,550 and the company reported 141,367,218 shares outstanding. The securities were acquired as Restricted Stock Units on 12/20/2022. The filer certifies no undisclosed material adverse information and references reliance on a written trading plan or Rule 10b5-1 instructions where applicable.

The form also discloses two prior 10b5-1 sales by the same person in the past three months: 2,500 shares sold on 07/15/2025 for $205,524.50 and 2,500 shares sold on 06/16/2025 for $185,328.25.

Positive

• Full disclosure of the proposed sale including shares (2,500) and aggregate market value ($228,550)
• Acquisition details provided: securities were RSUs acquired on 12/20/2022
• Prior 10b5-1 sales disclosed with dates and gross proceeds (06/16/2025 $185,328.25; 07/15/2025 $205,524.50)
• Filer affirms no undisclosed material adverse information and cites Rule 10b5-1/trading plan reliance

Negative

• None.

Insights

Financial Analyst

TL;DR: Routine insider sale under Rule 144 and documented 10b5-1 sales; amounts are disclosed but appear small relative to total outstanding shares.

The filing documents a proposed Rule 144 sale of 2,500 common shares acquired as Restricted Stock Units on 12/20/2022, with an aggregate market value of $228,550. The seller previously executed two 10b5-1 plan sales of 2,500 shares each in June and July 2025, with gross proceeds reported. For investors, the filing provides transparent traceability of insider share disposals and compliance with Rule 144 and 10b5-1 procedures. The disclosed outstanding share count (141,367,218) allows readers to gauge scale.

Corporate Governance Expert

TL;DR: Proper procedural disclosures appear present; signature and 10b5-1 plan references reduce regulatory risk if accurate.

The notice includes required acquisition details (RSUs granted 12/20/2022) and indicates sales will be executed through Morgan Stanley Smith Barney. The filer affirms no undisclosed material adverse information and references a written trading plan or 10b5-1 instructions. From a governance perspective, these elements demonstrate compliance with insider-trading safeguards and disclosure obligations, subject to verification of signatures and dates on the actual filed form.

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	228550.00	141367218	08/15/2025	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	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 the proposed sale?

The notice reports a proposed sale of 2,500 common shares via Morgan Stanley Smith Barney with an aggregate market value of $228,550 and company outstanding shares of 141,367,218.

When were the securities acquired that are to be sold on the CIEN Form 144?

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

Does the filing show any recent insider sales for the same seller at CIEN?

Yes. The filing discloses two 10b5-1 sales in the past three months: 2,500 shares on 06/16/2025 for $185,328.25 and 2,500 shares on 07/15/2025 for $205,524.50.

Through which broker will the CIEN shares be sold?

The proposed sale lists Morgan Stanley Smith Barney LLC, Executive Financial Services, 1 New York Plaza as the broker.

Does the filer assert compliance with disclosure requirements on this Form 144?

Yes. The filer represents by signing that they do not know any material adverse information about the issuer that has not been publicly disclosed and references any written 10b5-1 trading plan adoption date if applicable.