Ciena (CIEN) insider Marc Graff files Form 144 to sell 4,995 shares

Rhea-AI Filing Summary

Ciena Corporation insider Marc Graff filed a notice of proposed sale of 4,995 shares of common stock. The shares relate to Restricted Stock Units and are listed with an aggregate market value of $2,211,736.05, with Ciena reporting 141,552,922 common shares outstanding and listing the NYSE as the exchange.

The proposed sale is dated around August 14, 2026, with acquisition of the RSU-related shares shown as August 1, 2026. The filing also lists prior Rule 10b5-1 sales by Marc Graff over the past three months, including 126 shares on July 1, 2026 for $58,741.20 and 126 shares on June 24, 2026 for $56,619.36.

Key Figures

Shares to be sold: 4,995 shares Aggregate market value: $2,211,736.05 Shares outstanding: 141,552,922 shares +2 more

5 metrics

Shares to be sold 4,995 shares Proposed common stock sale by Marc Graff under Form 144

Aggregate market value $2,211,736.05 Aggregate market value of 4,995 Ciena common shares

Shares outstanding 141,552,922 shares Ciena common shares listed as outstanding

10b5-1 sale 1 126 shares for $58,741.20 Sale on July 1, 2026 under Rule 10b5-1

10b5-1 sale 2 126 shares for $56,619.36 Sale on June 24, 2026 under Rule 10b5-1

Key Terms

Form 144, Restricted Stock Units, Rule 10b5-1

3 terms

Form 144 regulatory

"Marc Graff filed a notice of proposed sale under Form 144"

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

"The shares relate to Restricted Stock Units and are listed"

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.

Rule 10b5-1 regulatory

"The filing also lists prior Rule 10b5-1 sales by Marc Graff"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

FAQ

What does Ciena (CIEN) disclose in this Form 144 filing?

Ciena discloses that insider Marc Graff has filed a notice to potentially sell 4,995 shares of Ciena common stock related to Restricted Stock Units, with an aggregate market value of $2,211,736.05 and NYSE listed as the exchange.

How many Ciena (CIEN) shares does Marc Graff plan to sell?

Marc Graff’s Form 144 notice covers a proposed sale of 4,995 shares of Ciena common stock. These shares are tied to Restricted Stock Units with a listed aggregate market value of $2,211,736.05 as part of the planned transaction.

What is the aggregate market value of the Ciena (CIEN) shares in this Form 144?

The proposed 4,995 shares of Ciena common stock are listed with an aggregate market value of $2,211,736.05. This value appears in the securities information section associated with Marc Graff’s planned sale under Form 144.

How many Ciena (CIEN) shares are reported as outstanding in this filing?

The filing lists 141,552,922 Ciena common shares as outstanding. This figure appears in the securities information section and provides context for the 4,995 shares covered by Marc Graff’s Form 144 proposed sale notice.

What prior 10b5-1 sales by Marc Graff are disclosed for Ciena (CIEN)?

Marc Graff is shown with two Rule 10b5-1 sales: 126 shares on July 1, 2026 for $58,741.20 and 126 shares on June 24, 2026 for $56,619.36. These transactions occurred during the three months preceding the Form 144 notice.

When are the Ciena (CIEN) RSU-related shares in this Form 144 shown as acquired?

The securities to be sold section lists the Ciena common shares as related to Restricted Stock Units with an acquisition date of August 1, 2026. The same section associates 4,995 shares with this RSU acquisition date and issuer source.

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Available on EDGAR 08/14/2026 - 04:34 PM Accepted by SEC EDGAR 08/14/2026 - 04:30 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	4995	2211736.05	141552922	08/14/2026	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	08/01/2026	Restricted Stock Units	Issuer			4995	08/01/2026	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 MARC GRAFF 7035 Ridge Road Hanover MD 21076	Common	07/01/2026	126	58741.20
10b5-1 Sales for MARC GRAFF 7035 Ridge Road Hanover MD 21076	Common	06/24/2026	126	56619.36

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)