Mattel (MAT) awards 13,619 RSUs to SVP & corporate controller

Rhea-AI Filing Summary

Hugh Yoon J. reported acquisition or exercise transactions in this Form 4 filing.

Mattel, Inc. reported that SVP & Corporate Controller Hugh Yoon J. received a grant of 13,619 Restricted Stock Units (RSUs) on May 1, 2026 under the Mattel, Inc. Amended and Restated 2010 Equity and Long-Term Compensation Plan.

Each RSU represents a contingent right to receive one share of Mattel common stock, or at Mattel’s election a cash amount equal to the share’s fair market value at vesting, subject to tax withholding. The RSUs vest 33% on the first anniversary of the grant date, an additional 33% on the second anniversary, and the remaining 34% on the third anniversary, making this a multi‑year, stock‑based compensation award rather than an open‑market transaction.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Hugh Yoon J.

Role SVP & Corporate Controller

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	13,619	$0.00	--

Holdings After Transaction: Restricted Stock Units — 13,619 shares (Direct, null)

Footnotes (1)

1. The Restricted Stock Units ("RSUs" or "Units") were granted on May 1, 2026 pursuant to the Mattel, Inc. Amended and Restated 2010 Equity and Long-Term Compensation Plan, as amended (the "Plan"). Each Unit represents a contingent right to receive one share of Mattel, Inc. Common Stock (or, at the election of Mattel, Inc., a cash amount equal to the fair market value of such share). The RSUs vest as to (a) 33% of the Units granted on the first anniversary of the date of grant, (b) an additional 33% of the Units granted on the second anniversary of the date of grant, and (c) the remaining 34% of the Units granted on the third anniversary of the date of grant. On each vesting date, for each Unit vesting on such date, the Reporting Person will receive one share of Mattel, Inc. Common Stock (or, at the election of Mattel, Inc., a cash amount equal to the fair market value of one share of Common Stock on the date of vesting), subject to tax withholding.

Key Figures

RSUs granted: 13,619 units Post-grant RSU holdings from award: 13,619 units First-year vesting portion: 33% of units +3 more

6 metrics

RSUs granted 13,619 units Restricted Stock Units granted on May 1, 2026

Post-grant RSU holdings from award 13,619 units Total RSUs from this grant following transaction

First-year vesting portion 33% of units Vests on first anniversary of May 1, 2026 grant date

Second-year vesting portion 33% of units Vests on second anniversary of May 1, 2026 grant date

Third-year vesting portion 34% of units Vests on third anniversary of May 1, 2026 grant date

Underlying common shares per RSU 1 share or cash equivalent Each unit equals one Mattel share or its cash value at vesting

Key Terms

Restricted Stock Units, contingent right, Equity and Long-Term Compensation Plan, vesting, +1 more

5 terms

Restricted Stock Units financial

"The Restricted Stock Units ("RSUs" or "Units") were granted on May 1, 2026"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

contingent right financial

"Each Unit represents a contingent right to receive one share of Mattel, Inc. Common Stock"

Equity and Long-Term Compensation Plan financial

"pursuant to the Mattel, Inc. Amended and Restated 2010 Equity and Long-Term Compensation Plan"

vesting financial

"The RSUs vest as to (a) 33% of the Units granted on the first anniversary"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

tax withholding financial

"the Reporting Person will receive one share ... subject to tax withholding"

Tax withholding is the practice of taking a portion of a payment—such as wages, dividends, or sale proceeds—before it reaches the recipient and sending that portion to the tax authority as an advance on the recipient’s eventual tax bill. For investors it matters because withholding reduces immediate cash received and affects after‑tax returns, estimated tax payments, and whether you may owe more or receive a refund when taxes are finally calculated, like having a small automatic savings set aside for your tax bill.

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^*

Hugh Yoon J.

(Last) (First) (Middle)

333 CONTINENTAL BOULEVARD

(Street)

EL SEGUNDO CALIFORNIA 90245

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
MATTEL INC /DE/ [ MAT ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP & Corporate Controller

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/01/2026

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

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
Restricted Stock Units	(1)	05/01/2026		A		13,619		(2)	(2)	Common Stock	13,619	$0	13,619	D

Explanation of Responses:

1. The Restricted Stock Units ("RSUs" or "Units") were granted on May 1, 2026 pursuant to the Mattel, Inc. Amended and Restated 2010 Equity and Long-Term Compensation Plan, as amended (the "Plan"). Each Unit represents a contingent right to receive one share of Mattel, Inc. Common Stock (or, at the election of Mattel, Inc., a cash amount equal to the fair market value of such share).

2. The RSUs vest as to (a) 33% of the Units granted on the first anniversary of the date of grant, (b) an additional 33% of the Units granted on the second anniversary of the date of grant, and (c) the remaining 34% of the Units granted on the third anniversary of the date of grant. On each vesting date, for each Unit vesting on such date, the Reporting Person will receive one share of Mattel, Inc. Common Stock (or, at the election of Mattel, Inc., a cash amount equal to the fair market value of one share of Common Stock on the date of vesting), subject to tax withholding.

Remarks:

	/s/ Tiffani Magri, Attorney-in-Fact for Yoon J. Hugh	05/05/2026
	** 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 Mattel (MAT) executive Hugh Yoon J. report in this Form 4?

Hugh Yoon J., Mattel’s SVP & Corporate Controller, reported receiving a grant of 13,619 Restricted Stock Units on May 1, 2026. These RSUs are a compensation award under Mattel’s equity and long-term compensation plan, not an open-market stock purchase or sale.

How many Restricted Stock Units did Mattel (MAT) grant in this filing?

Mattel granted 13,619 Restricted Stock Units to Hugh Yoon J. Each unit represents a contingent right to one share of Mattel common stock or equivalent cash value at vesting, subject to Mattel’s election and tax withholding requirements described in the grant terms.

How do the Mattel (MAT) RSUs granted to Hugh Yoon J. vest over time?

The 13,619 RSUs vest in three annual tranches: 33% on the first anniversary of the May 1, 2026 grant date, another 33% on the second anniversary, and the remaining 34% on the third anniversary, creating a three-year, time-based vesting schedule for this award.

What does each Mattel (MAT) Restricted Stock Unit represent in this award?

Each RSU represents a contingent right to receive one share of Mattel common stock, or at Mattel’s election a cash amount equal to the fair market value of that share at vesting. Delivery of shares or cash on each vesting date is subject to tax withholding obligations.

Is the Mattel (MAT) RSU grant to Hugh Yoon J. an open-market stock transaction?

No. The RSU grant to Hugh Yoon J. is a compensation award under Mattel’s equity and long-term compensation plan. It does not involve buying or selling shares in the open market, but rather a contingent right to future shares or cash as the units vest.