Mattel (MAT) director settles 2,208 RSUs, keeps 1,766 shares

Rhea-AI Filing Summary

Mattel director Noreena Hertz exercised previously granted Restricted Stock Units that were fully vested, converting 2,208 RSUs into 2,208 shares of Mattel common stock. To satisfy required taxes at settlement, 442 shares were automatically withheld at a price of $14.30 per share, leaving her with 1,766 shares held directly.

Insider Trade Summary

2,208 shares exercised/converted

Mixed 3 txns

Insider Hertz Noreena

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	2,208	$0.00	--
Exercise	Common Stock	2,208	$0.00	--
Tax Withholding	Common Stock	442	$14.30	$6K

Holdings After Transaction: Restricted Stock Units — 0 shares (Direct); Common Stock — 2,208 shares (Direct)

Footnotes (1)

1. As reported on a Form 4 dated March 29, 2023 and filed on March 31, 2023, the Reporting Person received a grant of 2,208 Restricted Stock Units ("RSUs") on March 29, 2023. The RSUs were fully vested on the grant date and are settled on the third anniversary of the grant date. On March 27, 2026, 100% of these RSUs were settled, resulting in the issuance of 2,208 shares of Mattel, Inc. Common Stock. Pursuant to the terms of the March 29, 2023 RSU grant, 442 shares of Mattel, Inc. Common Stock were automatically withheld at vesting to cover required tax withholding.

Key Figures

RSUs granted: 2,208 units Shares issued at settlement: 2,208 shares Shares withheld for taxes: 442 shares at $14.30 +2 more

5 metrics

RSUs granted 2,208 units Restricted Stock Units granted March 29, 2023

Shares issued at settlement 2,208 shares RSUs settled into Mattel common stock on March 27, 2026

Shares withheld for taxes 442 shares at $14.30 Automatically withheld to cover required tax withholding

Net shares held after transaction 1,766 shares Common stock held directly by Noreena Hertz following settlement

Exercise price of RSUs $0.00 per unit RSUs converted to common stock without cash exercise cost

Key Terms

Restricted Stock Units, tax withholding, Form 4

3 terms

Restricted Stock Units financial

"the Reporting Person received a grant of 2,208 Restricted Stock Units ("RSUs") on March 29, 2023."

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.

tax withholding financial

"442 shares of Mattel, Inc. Common Stock were automatically withheld at vesting to cover required 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 regulatory

"As reported on a Form 4 dated March 29, 2023 and filed on March 31, 2023, the Reporting Person received a grant"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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^*

Hertz Noreena

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/27/2026

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	03/27/2026		M		2,208	A	(1)	2,208	D
Common Stock	03/27/2026		F		442(2)	D	$14.3	1,766	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
Restricted Stock Units	(1)	03/27/2026		M			2,208	(1)	(1)	Common Stock	2,208	$0	0	D

Explanation of Responses:

1. As reported on a Form 4 dated March 29, 2023 and filed on March 31, 2023, the Reporting Person received a grant of 2,208 Restricted Stock Units ("RSUs") on March 29, 2023. The RSUs were fully vested on the grant date and are settled on the third anniversary of the grant date. On March 27, 2026, 100% of these RSUs were settled, resulting in the issuance of 2,208 shares of Mattel, Inc. Common Stock.

2. Pursuant to the terms of the March 29, 2023 RSU grant, 442 shares of Mattel, Inc. Common Stock were automatically withheld at vesting to cover required tax withholding.

Remarks:

	/s/ Tiffani Magri, Attorney-in-Fact for Noreena Hertz	03/31/2026
	** 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 insider transaction did Mattel (MAT) director Noreena Hertz report?

Noreena Hertz reported the settlement of 2,208 Restricted Stock Units into 2,208 shares of Mattel common stock. These RSUs were granted in March 2023 and settled on their third anniversary, reflecting equity compensation rather than an open-market share purchase or sale.

How many Mattel (MAT) shares did Noreena Hertz receive and retain from her RSUs?

The grant produced 2,208 Mattel common shares when the RSUs settled. Of these, 442 shares were automatically withheld to cover required tax withholding, leaving 1,766 shares of common stock held directly by Noreena Hertz after the reported transactions.

Was the Mattel (MAT) insider transaction an open-market sale or a tax withholding?

The disposition of 442 Mattel shares was a tax withholding event, not an open-market sale. Shares were automatically withheld at $14.30 per share to satisfy tax obligations triggered by the RSU settlement, a common feature of equity compensation programs.

What are the key details of Noreena Hertz’s March 29, 2023 RSU grant at Mattel (MAT)?

Noreena Hertz received 2,208 Restricted Stock Units on March 29, 2023. The RSUs were fully vested on the grant date and were structured to settle in Mattel common stock on the third anniversary, resulting in 2,208 shares issued when they settled on March 27, 2026.

How is the Mattel (MAT) Form 4 transaction by Noreena Hertz categorized?

The Form 4 shows a derivative exercise and related tax withholding. One transaction reflects the conversion of 2,208 vested RSUs into common stock, while a separate F-code transaction records 442 shares withheld automatically to cover tax liabilities due at settlement.