Ciena (NYSE: CIEN) SVP DiPerna reports 10b5-1 stock sales on Form 4 filing

Rhea-AI Filing Summary

Ciena Corporation senior vice president of Global R&D, Dino DiPerna, reported automatic stock sales under a pre-arranged trading plan. On January 15, 2026, he sold a total of 5,054 shares of Ciena common stock in open market transactions at a price of $246.23 per share, coded as sale transactions ("S"). These transactions were effected pursuant to a Rule 10b5-1 trading plan dated July 11, 2025, which is designed to allow insiders to sell shares according to a preset schedule.

After the reported sales, DiPerna beneficially owned 47,341 Ciena shares on a direct basis. The filing notes that this figure includes unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs), meaning part of his reported holdings are still subject to future vesting conditions rather than being fully vested shares.

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).

X

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^*

DiPerna Dino

(Last) (First) (Middle)

C/O CIENA CORPORATION

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 Global R&D

3. Date of Earliest Transaction (Month/Day/Year)
01/15/2026

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	01/15/2026		S		2,527(1)	D	$246.23	49,868(2)	D
Common Stock	01/15/2026		S		2,527(1)	D	$246.23	47,341(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. Sales were effected pursuant to Rule 10b5-1 trading plan dated 7/11/2025.

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

	By: Michelle Rankin For: Dino Diperna	01/16/2026
	** 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 CORP (CIEN) disclose for Dino DiPerna?

The filing reports that Dino DiPerna, SVP Global R&D at Ciena, sold a total of 5,054 shares of Ciena common stock on January 15, 2026 in open market sale transactions at $246.23 per share.

Was the CIEN insider sale by Dino DiPerna made under a Rule 10b5-1 plan?

Yes. The filing states that the sales were effected pursuant to a Rule 10b5-1 trading plan dated July 11, 2025, indicating they followed a pre-arranged schedule rather than being discretionary trades.

How many CIENA CORP (CIEN) shares does Dino DiPerna own after this Form 4?

After the reported transactions, Dino DiPerna is shown as beneficially owning 47,341 shares of Ciena common stock directly. This amount reflects his holdings immediately following the January 15, 2026 sales.

What price did Dino DiPerna receive for the CIEN shares sold?

The reported Ciena common stock sales were executed at a price of $246.23 per share, as disclosed in the transaction detail for the January 15, 2026 trades.

Do Dino DiPernas reported CIEN holdings include RSUs and PSUs?

Yes. A footnote explains that the shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs), so not all of the 47,341 shares are fully vested.

What is Dino DiPernas role at CIENA CORP (CIEN) according to the Form 4?

The filing identifies Dino DiPerna as an officer of Ciena Corporation, serving as SVP Global R&D, and clarifies that he is not listed as a director or 10% owner.