Ciena (NYSE: CIEN) SVP DiPerna details PSU and RSU awards on Form 4 insider filing

Rhea-AI Filing Summary

Ciena Corporation senior vice president of Global R&D Dino DiPerna reported equity awards dated December 16, 2025. He acquired 14,320 common shares from a performance stock unit award granted on December 17, 2024 after achieving related performance conditions, with these shares vesting in two equal installments on December 20, 2025 and December 20, 2026.

He also acquired 7,387 restricted stock units that 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 March 20, 2026. Following these transactions, he beneficially owned 59,754 common shares, and the reported amount includes unvested restricted stock units and performance stock units.

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

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

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)
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		14,320(1)	A	$0.0	52,367(2)	D
Common Stock	12/16/2025		A		7,387(3)	A	$0.0	59,754(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 the number of stock units earned pursuant to the terms of a performance stock unit (PSU) award granted on December 17, 2024 reflecting the achievement of the related performance conditions. These shares vest in equal 1/2 amounts on each of December 20, 2025 and 2026.

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

3. 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.

	By: Michelle Rankin For: Dino DiPerna	12/17/2025
	** 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) executive Dino DiPerna report?

Ciena SVP Global R&D Dino DiPerna reported the acquisition of common stock and stock units on December 16, 2025, reflecting earned performance stock units and newly granted restricted stock units.

How many performance stock units did Dino DiPerna report for Ciena (CIEN)?

He reported 14,320 common shares earned from a performance stock unit (PSU) award that was originally granted on December 17, 2024, based on achievement of the related performance conditions.

What is the vesting schedule for Dino DiPerna’s Ciena (CIEN) performance stock units?

The 14,320 shares from the PSU award vest in two equal one-half installments on December 20, 2025 and December 20, 2026.

How many restricted stock units did Dino DiPerna receive from Ciena (CIEN)?

He received 7,387 restricted stock units (RSUs) that vest over four years, with one-sixteenth of the grant vesting on March 20, June 20, September 20 and December 20 of each year, beginning March 20, 2026.

How many Ciena (CIEN) shares does Dino DiPerna beneficially own after these transactions?

After the reported transactions, Dino DiPerna beneficially owned 59,754 shares of Ciena common stock, and this figure includes unvested RSUs and PSUs.

What is Dino DiPerna’s role and relationship to Ciena (CIEN)?

Dino DiPerna is an officer of Ciena Corporation, serving as senior vice president of Global R&D, and the Form 4 indicates the filing is made by one reporting person.