Ciena (CIEN) director Bruce Claflin receives 605-share equity grant in Form 4 filing

Rhea-AI Filing Summary

Claflin Bruce L. reported acquisition or exercise transactions in this Form 4 filing.

Ciena director Bruce L. Claflin received a grant of 605 shares of Common Stock as a stock award. The shares were granted at no cash cost and are tied to restricted stock units that vest in full on the first anniversary of the grant date. After this award, he holds 50,843 shares directly, which include unvested restricted stock units. A separate indirect holding of 11,136 shares is reported in a spousal trust whose beneficiaries are his spouse and children, and he disclaims beneficial ownership of those trust-held shares.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Claflin Bruce L.

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	605	$0.00	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 50,843 shares (Direct); Common Stock — 11,136 shares (Indirect, By spousal trust)

Footnotes (1)

1. Restricted stock units (RSUs) vest in full on the first anniversary of the date of the grant. Shares reported include unvested Restricted Stock Units (RSUs). The beneficiaries of the trust are the reporting person's spouse and children. The reporting person disclaims beneficial ownership of the securities held by the trust.

Key Figures

Equity grant size: 605 shares Direct holdings after grant: 50,843 shares Indirect spousal trust holdings: 11,136 shares +1 more

4 metrics

Equity grant size 605 shares Common Stock grant on March 26, 2026

Direct holdings after grant 50,843 shares Common Stock held directly following the transaction

Indirect spousal trust holdings 11,136 shares Common Stock held by spousal trust, beneficial ownership disclaimed

Grant price per share $0.0000 per share Equity award granted at no cash cost

Key Terms

Restricted Stock Units (RSUs), unvested Restricted Stock Units (RSUs), spousal trust, beneficial ownership

4 terms

Restricted Stock Units (RSUs) financial

"Restricted stock units (RSUs) vest in full on the first anniversary of the date of the grant."

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.

unvested Restricted Stock Units (RSUs) financial

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

spousal trust financial

"nature_of_ownership": "By spousal trust""

beneficial ownership financial

"The reporting person disclaims beneficial ownership of the securities held by the trust."

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

Form 4 Insider Transactions: What Each Field Means →

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^*

Claflin Bruce L.

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/26/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/26/2026		A		605(1)	A	$0.0	50,843(2)	D
Common Stock								11,136	I	By spousal trust(3)

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. Restricted stock units (RSUs) vest in full on the first anniversary of the date of the grant.

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

3. The beneficiaries of the trust are the reporting person's spouse and children. The reporting person disclaims beneficial ownership of the securities held by the trust.

	By: Michelle Rankin For: Bruce L. Claflin	03/27/2026
	** 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)

FAQ

What did Ciena (CIEN) director Bruce L. Claflin report in this Form 4?

Bruce L. Claflin reported receiving 605 shares of Ciena Common Stock as a grant at no cash cost. The award is structured as restricted stock units that vest in full one year after the grant date, reflecting routine equity-based director compensation.

How many Ciena (CIEN) shares does Bruce L. Claflin hold after this grant?

Following the grant, Bruce L. Claflin holds 50,843 Ciena Common Stock shares directly. This total includes unvested restricted stock units, meaning part of the position is still subject to future vesting conditions over time based on the grant terms.

When do Bruce L. Claflin’s new Ciena (CIEN) RSUs vest?

The restricted stock units granted to Bruce L. Claflin vest in full on the first anniversary of the grant date. Until that vesting date, the units remain unvested equity awards, which are included in his reported direct share holdings in this filing.

What is the significance of the spousal trust in Bruce L. Claflin’s Ciena (CIEN) holdings?

The filing shows 11,136 Ciena shares held indirectly through a spousal trust whose beneficiaries are his spouse and children. Bruce L. Claflin disclaims beneficial ownership of these trust-held shares, indicating they are reported for transparency but not treated as his economic interest.

Did Bruce L. Claflin buy or sell Ciena (CIEN) shares on the market in this Form 4?

The Form 4 shows a grant of 605 shares as equity compensation, not an open-market purchase or sale. No market buy or sell transactions are reported; instead, the change reflects a stock award that increases his direct share holdings.