Ciena (CIEN) insider Gary B. Smith plans 101,305-share NYSE stock sale

Rhea-AI Filing Summary

Ciena insider Gary B. Smith plans to sell 101,305 shares of common stock through Goldman Sachs & Co. LLC on the NYSE, with an aggregate market value of 23,391,324.5. The issuer has 140,854,735 shares of common stock outstanding. The shares to be sold were acquired from the issuer as equity compensation, including restricted stock units, market stock units, and performance stock units granted between 06/20/2024 and 12/20/2025 in amounts such as 4,633, 59,281, 24,271, 10,416 and 2,704 shares.

During the past three months, Gary B. Smith sold multiple 3,400-share blocks of common stock between 10/15/2025 and 12/22/2025, with individual transactions showing gross proceeds ranging from 578,720.46 to 793,762.64. By signing, the seller represents that he does not know any undisclosed material adverse information about Ciena’s current or prospective operations.

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 Stock	Goldman Sachs & Co. LLC 200 West Street New York NY 10282	101305	23391324.5	140854735	01/05/2026	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 Stock	06/20/2024	Acquired as compensation -- Restricted Stock Units	Issuer			4633	06/20/2024	Compensation
Common Stock	12/20/2025	Acquired as Compensation - Market Stock Units	Issuer			59281	12/20/2025	Compensation
Common Stock	12/20/2025	Acquired as Compensation - Performance Stock Units	Issuer			24271	12/20/2025	Compensation
Common Stock	09/20/2024	Acquired as compensation -- Restricted Stock Units	Issuer			10416	09/20/2024	Compensation
Common Stock	12/20/2024	Acquired as compensation -- Restricted Stock Units	Issuer			2704	12/20/2024	Compensation

* 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
Gary B. Smith 7035 Ridge Road Hanover MD 21076	Common Stock	12/22/2025	3400	793762.64
Gary B. Smith 7035 Ridge Road Hanover MD 21076	Common Stock	12/22/2025	3400	793678.32
Gary B. Smith 7035 Ridge Road Hanover MD 21076	Common Stock	12/03/2025	3400	655014.08
Gary B. Smith 7035 Ridge Road Hanover MD 21076	Common Stock	12/03/2025	3400	654534.34
Gary B. Smith 7035 Ridge Road Hanover MD 21076	Common Stock	11/10/2025	3400	712031.06
Gary B. Smith 7035 Ridge Road Hanover MD 21076	Common Stock	11/10/2025	3400	712038.88
Gary B. Smith 7035 Ridge Road Hanover MD 21076	Common Stock	11/03/2025	3400	647468.12
Gary B. Smith 7035 Ridge Road Hanover MD 21076	Common Stock	11/03/2025	3400	647394.34
Gary B. Smith 7035 Ridge Road Hanover MD 21076	Common Stock	10/15/2025	3400	578781.66
Gary B. Smith 7035 Ridge Road Hanover MD 21076	Common Stock	10/15/2025	3400	578720.46

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 Ciena (CIEN) insider plan disclosed in this Form 144?

The notice states that Gary B. Smith plans to sell 101,305 shares of Ciena common stock through Goldman Sachs & Co. LLC on the NYSE, with an aggregate market value of 23,391,324.5.

How many Ciena (CIEN) shares are outstanding in this Form 144 filing?

The filing lists 140,854,735 shares of Ciena common stock as outstanding at the time referenced in the notice.

How did the Ciena (CIEN) insider acquire the shares being sold?

The shares were acquired from the issuer as compensation, including restricted stock units, market stock units, and performance stock units granted on dates such as 06/20/2024, 09/20/2024, 12/20/2024 and 12/20/2025 in amounts like 4,633, 10,416, 2,704, 59,281 and 24,271 shares.

Which broker will handle the planned Ciena (CIEN) stock sale?

The planned sale of 101,305 shares of Ciena common stock will be handled by Goldman Sachs & Co. LLC, located at 200 West Street, New York, NY 10282.

On which exchange is the Ciena (CIEN) stock sale under this Form 144 expected to occur?

The notice identifies the NYSE as the securities exchange for the planned sale of Ciena common stock.

What prior Ciena (CIEN) stock sales by Gary B. Smith are disclosed for the past 3 months?

The notice lists multiple prior sales by Gary B. Smith of 3,400 shares of Ciena common stock per transaction on dates including 10/15/2025, 11/03/2025, 11/10/2025, 12/03/2025, and 12/22/2025, with individual gross proceeds figures such as 578,720.46, 578,781.66, 647,394.34, 647,468.12, 712,031.06, 712,038.88, 654,534.34, 655,014.08, 793,678.32 and 793,762.64.

What representation does the Ciena (CIEN) insider make when signing the Form 144 notice?

By signing, the person for whose account the securities are to be sold represents that he does not know any material adverse information about the issuer’s current or prospective operations that has not been publicly disclosed, and acknowledges that intentional misstatements or omissions can constitute federal criminal violations.