Ciena (NYSE: CIEN) Form 144 shows 1,586 RSUs and 1,773-share 10b5-1 sales

Rhea-AI Filing Summary

Ciena filed a Form 144 disclosing proposed and recent insider equity dispositions. The notice lists 1,586 Restricted Stock Units dated 06/20/2026 and references prior 10b5-1 sales of 1,773 shares on 03/27/2026. The filing records dollar amounts associated with those transactions.

Key Figures

RSUs listed: 1,586 shares 10b5-1 sales reported: 1,773 shares Dollar amount (example): $768,718.34 +2 more

5 metrics

RSUs listed 1,586 shares Restricted Stock Units dated 06/20/2026

10b5-1 sales reported 1,773 shares Executed on 03/27/2026 by Joseph Cumello

Dollar amount (example) $768,718.34 Amount reported on filing alongside securities data

Dollar amount (prior sale) $700,015.86 Amount associated with 10b5-1 sale on 03/27/2026

Filing/record date 06/26/2026 Date shown on the Form 144 header

Key Terms

Form 144, Restricted Stock Units, 10b5-1

3 terms

Form 144 regulatory

"144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Restricted Stock Units financial

"Common | 06/20/2026 | Restricted Stock Units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

10b5-1 regulatory

"10b5-1 Sales for JOSEPH CUMELLO"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

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Available on EDGAR 06/26/2026 - 04:26 PM Accepted by SEC EDGAR 06/26/2026 - 04:26 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
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	1586	768718.34	141552922	06/26/2026	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	06/20/2026	Restricted Stock Units	Issuer			1586	06/20/2026	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	03/27/2026	1773	700015.86

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 Ciena's Form 144 disclose?

The Form 144 discloses a proposed sale of 1,586 Restricted Stock Units dated 06/20/2026 and prior 10b5-1 sales of 1,773 shares executed on 03/27/2026. The filing includes associated dollar amounts for those transactions.

Who is named in the filing for prior sales shown in the Form 144?

Joseph Cumello is named in the filing in connection with 10b5-1 sales showing 1,773 shares sold on 03/27/2026 and an associated dollar figure reported alongside that sale in the notice.

What securities are being offered or sold according to the Form 144?

The filing lists Restricted Stock Units (RSUs) — specifically 1,586 RSUs dated 06/20/2026 — and references common stock sales executed under a 10b5-1 plan of 1,773 shares on 03/27/2026.

Are dollar amounts included in the Form 144 for these transactions?

Yes, the Form 144 includes dollar values reported with the transactions, for example figures near $768,718.34 and $700,015.86, which are shown alongside the listed share counts and sale dates in the notice.

What exchange and dates are associated with the Form 144 filing?

The filing records the exchange as NYSE and shows a filing or event date of 06/26/2026, with the RSU date of 06/20/2026 and the prior 10b5-1 sale date of 03/27/2026 included in the notice.