Ciena (CIEN) CFO Graff reports 9,293 RSU grant and 127,605 shares owned

Rhea-AI Filing Summary

Ciena Corp Senior Vice President and Chief Financial Officer Marc D. Graff reported an equity award of common stock in the form of restricted stock units. On 12/16/2025, he acquired 9,293 RSUs of Ciena common stock at a price of $0 per share. Following this grant, he beneficially owned 127,605 shares of Ciena common stock, which include unvested RSUs.

The RSUs vest over four years, with one-sixteenth of the grant amount vesting on March 20, June 20, September 20, and December 20 of each year, beginning on March 20, 2026. This structure ties a portion of the CFO’s compensation to the company’s long-term equity performance through staged vesting.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Graff Marc D.

(Last) (First) (Middle)

7035 RIDGE RD

(Street)

HANOVER MD 21076-1426

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
CIENA CORP [ CIEN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP & Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
12/16/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	12/16/2025		A		9,293(1)	A	$0	127,605(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Reflects Restricted Stock Units (RSUs) that vest over four years, with one-sixteenth of the grant amount vesting on March 20, June 20, September 20, and December 20 of each year, commencing on March 20, 2026.

2. Shares reported include unvested Restricted Stock Units (RSUs).

	By: Michelle Rankin For: Marc D. Graff	12/18/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Ciena (CIEN) report for its CFO on 12/16/2025?

Ciena reported that its SVP & Chief Financial Officer, Marc D. Graff, acquired 9,293 restricted stock units (RSUs) of Ciena common stock on 12/16/2025 at a price of $0 per share.

How many Ciena (CIEN) shares does the CFO beneficially own after this transaction?

After the reported RSU grant, Marc D. Graff beneficially owned 127,605 shares of Ciena common stock, and this amount includes unvested RSUs.

What is the vesting schedule for the 9,293 RSUs granted to Cienas CFO?

The 9,293 RSUs vest over four years, with one-sixteenth of the grant vesting on March 20, June 20, September 20, and December 20 of each year, starting on March 20, 2026.

What type of security did the Ciena (CIEN) CFO receive in this filing?

The CFO received restricted stock units (RSUs) that represent the right to receive shares of Ciena common stock according to the stated vesting schedule.

Is Marc D. Graff classified as an officer or director of Ciena (CIEN) in this report?

Marc D. Graff is listed as an Officer of Ciena, with the title SVP & Chief Financial Officer. He is not marked as a director or 10% owner in this filing.

Does the reported Ciena (CIEN) insider grant include unvested RSUs in the ownership total?

Yes. The filing states that the 127,605 shares beneficially owned by Marc D. Graff include unvested RSUs.