Were Dino DiPerna’s Ciena (CIEN) share sales under a Rule 10b5-1 plan?

Yes. The filing states the sales were effected pursuant to a Rule 10b5-1 trading plan dated 07/11/2025 . This indicates the trades followed a pre-established plan rather than being discretionary on the trade date.

Ciena Corp (NYSE: CIEN) SVP Dino DiPerna sells 782 shares under 10b5-1 plan

Q: What insider stock transaction did Ciena (CIEN) report for Dino DiPerna?

Ciena reported that SVP Global R&D Dino DiPerna sold a total of 782 common shares on 2026-07-15 at $449.15 per share , in two equal transactions of 391 shares each, under a Rule 10b5-1 trading plan.

Q: At what price did Dino DiPerna sell Ciena (CIEN) shares?

Each reported sale by Dino DiPerna of Ciena common stock was executed at $449.15 per share . Two transactions of 391 shares each occurred on 2026-07-15, according to the Form 4 insider trading report.

Q: How many Ciena (CIEN) shares does Dino DiPerna hold after the reported sales?

Following the reported transactions, line items show 39624 and 40015 Ciena shares held directly by Dino DiPerna. These reported holdings include unvested RSUs and PSUs , as disclosed in the footnotes to the Form 4 filing.

Q: Do Dino DiPerna’s reported Ciena (CIEN) holdings include unvested equity awards?

Yes. A footnote explains that the shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs) . Thus, the post-transaction share amounts reflect both vested and certain unvested equity awards.

Filing Impact

(Moderate)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Ciena Corp senior vice president of Global R&D Dino DiPerna reported two sales of common stock on 2026-07-15, each for 391 shares at $449.15 per share, executed pursuant to a Rule 10b5-1 trading plan dated 07/11/2025. The transactions totaled 782 shares sold. After these trades, the respective line items show direct holdings of 39624 and 40015 shares, and these amounts include unvested Restricted Stock Units and Performance Stock Units.

Insider Trade Summary 10b5-1

Net Seller: 782 shares ($351,235)

Net Sell 2 txns

Insider DiPerna Dino

Role SVP Global R&D

Sold 782 shs ($351K)

Type	Security	Shares	Price	Value
Sale	Common Stock	391	$449.15	$176K
Sale	Common Stock	391	$449.15	$176K

Holdings After Transaction: Common Stock — 40,015 shares (Direct)

Footnotes (1)

Sales were affected pursuant to Rule 10b5-1 trading plan dated 07/11/2025. Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).

Key Figures

Shares sold: 782 shares Sale price per share: $449.15 per share Direct holdings after sale (line 1): 39624 shares +2 more

5 metrics

Shares sold 782 shares Total Ciena common shares sold by Dino DiPerna on 2026-07-15

Sale price per share $449.15 per share Price for each of the two reported sale transactions

Direct holdings after sale (line 1) 39624 shares Direct Ciena shares reported following the first transaction, including unvested RSUs and PSUs

Direct holdings after sale (line 2) 40015 shares Direct Ciena shares reported following the second transaction, including unvested RSUs and PSUs

Rule 10b5-1 plan date 07/11/2025 Date of the trading plan under which the sales were effected

Key Terms

Rule 10b5-1 trading plan, Restricted Stock Units (RSUs), Performance Stock Units (PSUs)

3 terms

Rule 10b5-1 trading plan regulatory

"Sales were affected pursuant to Rule 10b5-1 trading plan dated 07/11/2025."

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

Restricted Stock Units (RSUs) financial

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

Restricted stock units (RSUs) are a type of company promise to give employees shares of stock in the future, usually after certain conditions like working for a set time. They are like a gift promised today that you receive later, which can become valuable if the company's stock price goes up. RSUs matter because they are a way companies reward employees and can be a significant part of compensation.

Performance Stock Units (PSUs) financial

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

Performance stock units (PSUs) are a form of executive or employee pay that promise company shares only if pre-set performance goals are met over a defined period; think of them as a bonus paid in stock that arrives only when the company hits agreed targets. Investors watch PSUs because they affect the number of shares outstanding (dilution) and reveal how management’s pay is tied to financial or operational results, aligning incentives with shareholder outcomes.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/17/2026 - 05:31 PM Accepted by SEC EDGAR 07/17/2026 - 05:30 PM

FAQ

What insider stock transaction did Ciena (CIEN) report for Dino DiPerna?

Ciena reported that SVP Global R&D Dino DiPerna sold a total of 782 common shares on 2026-07-15 at $449.15 per share, in two equal transactions of 391 shares each, under a Rule 10b5-1 trading plan.

At what price did Dino DiPerna sell Ciena (CIEN) shares?

Each reported sale by Dino DiPerna of Ciena common stock was executed at $449.15 per share. Two transactions of 391 shares each occurred on 2026-07-15, according to the Form 4 insider trading report.

How many Ciena (CIEN) shares does Dino DiPerna hold after the reported sales?

Following the reported transactions, line items show 39624 and 40015 Ciena shares held directly by Dino DiPerna. These reported holdings include unvested RSUs and PSUs, as disclosed in the footnotes to the Form 4 filing.

Do Dino DiPerna’s reported Ciena (CIEN) holdings include unvested equity awards?

Yes. A footnote explains that the shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs). Thus, the post-transaction share amounts reflect both vested and certain unvested equity awards.

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

MARYLAND

21076-1426

(City)

(State)

(Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/15/2026

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

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

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

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	07/15/2026		S		391⁽¹⁾	D	$449.15	40,015⁽²⁾	D
Common Stock	07/15/2026		S		391⁽¹⁾	D	$449.15	39,624⁽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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Sales were affected pursuant to Rule 10b5-1 trading plan dated 07/11/2025.

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

	By: Michelle Rankin For: Dino Diperna	07/16/2026
	** 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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR