(MAT)

Reporting relationship: Pres., Chief Mktg & Brand Ofc
Issuer ticker: MAT
Reported as of: 31 Jul 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 04 Aug 2026, 17:53:39 UTC
Prior SEC filing: 04 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ Tiffani Magri, Attorney-in-Fact for Roberto Seixas Stanichi

Key filing fact

Roberto Seixas Stanichi filed Form 4 for MATTEL INC /DE/ (MAT) on 04 Aug 2026.

Key facts

This page summarizes Roberto Seixas Stanichi's Form 4 filing for MATTEL INC /DE/ (MAT).
2 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 04 Aug 2026, 17:53.

Change

Previous filing in this sequence was filed on 04 Aug 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002148131 Primary reporting owner

Stanichi Roberto Seixas

Relationship: Pres., Chief Mktg & Brand Ofc
Address: 333 CONTINENTAL BOULEVARD, EL SEGUNDO
Signature: /s/ Tiffani Magri, Attorney-in-Fact for Roberto Seixas Stanichi
Signature date: 04 Aug 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

MAT transaction Derivative

Restricted Stock Units

Award

Transaction value
Shares: +62,956
Change %
Price: $0.000000^*
Shares after: 62,956
Date: 31 Jul 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 62,956
Exercise price
Footnotes: F1, F2

MAT transaction Derivative

Restricted Stock Units

Award

Transaction value
Shares: +132,538
Change %
Price: $0.000000^*
Shares after: 132,538
Date: 31 Jul 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 132,538
Exercise price
Footnotes: F1, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

The Restricted Stock Units ("RSUs" or "Units") were granted on July 31, 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).

Footnote F2

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.

Footnote F3

The RSUs vest as to 50% of the Units granted on the first anniversary of the date of grant and as to the remaining 50% of the Units granted on the second 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.