MATTEL INC /DE/ — Director's Dealing 2025

May 1, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MATTEL INC /DE/ (MAT)
CIK: 0000063276
Period of Report: 2025-04-29

Reporting Person: Hugh Yoon J. (SVP & Corporate Controller)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-04-29	Common Stock	M	2448	—	Acquired	27091	Direct
2025-04-29	Common Stock	F	876	$15.75	Disposed	26215	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-04-29	Restricted Stock Units	$	M	2448	Disposed		Common Stock (2448)	Direct

Footnotes

F1: As reported on a Form 4 dated April 29, 2022 and filed on May 3, 2022, the Reporting Person received a grant of 7,199 Restricted Stock Units ("RSUs" or "Units") on April 29, 2022. The RSUs vested 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 received one share of Mattel, Inc. Common Stock, subject to tax withholding. On April 29, 2025, the final 34% of these RSUs vested, resulting in the issuance of 2,448 shares of Mattel, Inc. Common Stock.

F2: Pursuant to the terms of the April 29, 2022 RSU grant, 876 shares of Mattel, Inc. Common Stock were automatically withheld at vesting to cover required tax withholding.