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Mattel Inc. (MAT) executive discloses common stock and RSU stakes

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(Neutral)
Form Type
3

Rhea-AI Filing Summary

Mattel Inc. executive Roberto Seixas Stanichi filed an initial statement of beneficial ownership, reporting direct holdings of common stock and several restricted stock unit (RSU) awards. Each RSU represents a contingent right to one share of common stock or equivalent cash and vests 33%, 33% and 34% on the first three anniversaries of its grant date.

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Insider Stanichi Roberto Seixas
Role Pres., Chief Mktg & Brand Ofc
Type Security Shares Price Value
holding Restricted Stock Units - Granted 04/25/2024 F2, F1 -- -- --
holding Restricted Stock Units - Granted 04/30/2024 F2, F1 -- -- --
holding Restricted Stock Units - Granted 04/30/2025 F2, F1 -- -- --
holding Restricted Stock Units - Granted 05/07/2025 F2, F1 -- -- --
holding Restricted Stock Units - Granted 09/30/2025 F2, F1 -- -- --
holding Restricted Stock Units - Granted 05/01/2026 F2, F1 -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Restricted Stock Units - Granted 04/25/2024 — 8,345 shares (Direct); Restricted Stock Units - Granted 04/30/2024 — 5,568 shares (Direct); Restricted Stock Units - Granted 04/30/2025 — 10,542 shares (Direct); Restricted Stock Units - Granted 05/07/2025 — 15,376 shares (Direct); Restricted Stock Units - Granted 09/30/2025 — 5,199 shares (Direct); Restricted Stock Units - Granted 05/01/2026 — 36,839 shares (Direct); Common Stock — 45,929 shares (Direct)
Footnotes (2)
  1. F1. The Restricted Stock Units (the "RSUs" or "Units") 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.
  2. F2. The RSUs were granted pursuant to the Mattel, Inc. Amended and Restated 2010 Equity and Long-Term Compensation Plan, as amended. 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).
Common stock directly held 45929 shares Directly held Mattel common stock as of 2026-07-29
RSUs granted 04/25/2024 underlying shares 8345 shares Underlying common shares for RSUs granted 04/25/2024, held directly
RSUs granted 04/30/2024 underlying shares 5568 shares Underlying common shares for RSUs granted 04/30/2024, held directly
RSUs granted 04/30/2025 underlying shares 10542 shares Underlying common shares for RSUs granted 04/30/2025, held directly
RSUs granted 05/07/2025 underlying shares 15376 shares Underlying common shares for RSUs granted 05/07/2025, held directly
RSUs granted 09/30/2025 underlying shares 5199 shares Underlying common shares for RSUs granted 09/30/2025, held directly
RSUs granted 05/01/2026 underlying shares 36839 shares Underlying common shares for RSUs granted 05/01/2026, held directly
Restricted Stock Units financial
"The Restricted Stock Units (the "RSUs" or "Units") vest as to (a) 33%"
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."
Amended and Restated 2010 Equity and Long-Term Compensation Plan financial
"The RSUs were granted pursuant to the Mattel, Inc. Amended and Restated 2010 Equity and Long-Term Compensation Plan"
tax withholding financial
"one share of Common Stock ... 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.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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FAQ

What did Mattel (MAT) executive Roberto Seixas Stanichi report on his Form 3?

Roberto Seixas Stanichi reported his initial beneficial ownership in Mattel, including direct common stock and multiple restricted stock unit (RSU) awards that convert into common shares or cash as they vest over three years.

How many Mattel (MAT) common shares does Roberto Seixas Stanichi directly hold?

He directly holds 45,929 shares of Mattel common stock as of July 29, 2026. This figure comes from the Form 3 table describing his post-reporting position in the issuer’s common stock.

What RSU awards in Mattel (MAT) stock does Roberto Seixas Stanichi report?

He reports six RSU awards, with underlying shares of 8,345, 5,568, 10,542, 15,376, 5,199 and 36,839. Each award is tied to Mattel common stock and vests over time according to the plan terms.

How do Roberto Seixas Stanichi’s Mattel (MAT) RSUs vest?

Each RSU grant vests 33% on the first anniversary of grant, another 33% on the second, and 34% on the third. On each vesting date, one share of common stock or equivalent cash is delivered per vested unit, subject to tax withholding.

Are Roberto Seixas Stanichi’s Mattel (MAT) RSUs settled in stock or cash?

Each RSU represents a right to receive one Mattel common share or, at Mattel’s election, cash equal to that share’s fair market value on the vesting date, in each case subject to applicable tax withholding.

Under what plan were Roberto Seixas Stanichi’s Mattel (MAT) RSUs granted?

The RSUs were granted under the Mattel, Inc. Amended and Restated 2010 Equity and Long-Term Compensation Plan. This equity compensation plan provides for awards like RSUs that are settled in shares of common stock or cash.
SEC Form 3
FORM 3UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:3235-0104
Estimated average burden
hours per response:0.5
1. Name and Address of Reporting Person*
Stanichi Roberto Seixas

(Last)(First)(Middle)
333 CONTINENTAL BOULEVARD

(Street)
EL SEGUNDO CALIFORNIA 90245

(City)(State)(Zip)

UNITED STATES

(Country)
2. Date of Event Requiring Statement (Month/Day/Year)
07/29/2026
3. Issuer Name and Ticker or Trading Symbol
MATTEL INC /DE/ [ MAT ]
3a. Foreign Trading Symbol
5. If Amendment, Date of Original Filed (Month/Day/Year)
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
Pres., Chief Mktg & Brand Ofc
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock45,929D
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year)3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Stock Units - Granted 04/25/2024 (1) (1)Common Stock8,345(2)D
Restricted Stock Units - Granted 04/30/2024 (1) (1)Common Stock5,568(2)D
Restricted Stock Units - Granted 04/30/2025 (1) (1)Common Stock10,542(2)D
Restricted Stock Units - Granted 05/07/2025 (1) (1)Common Stock15,376(2)D
Restricted Stock Units - Granted 09/30/2025 (1) (1)Common Stock5,199(2)D
Restricted Stock Units - Granted 05/01/2026 (1) (1)Common Stock36,839(2)D
Explanation of Responses:
1. The Restricted Stock Units (the "RSUs" or "Units") 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.
2. The RSUs were granted pursuant to the Mattel, Inc. Amended and Restated 2010 Equity and Long-Term Compensation Plan, as amended. 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).
Remarks:
Exhibit 24 - Power of Attorney
/s/ Tiffani Magri, Attorney-in-Fact for Roberto Seixas Stanichi08/04/2026
** Signature of Reporting PersonDate
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 5 (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 3: SEC 1473 (03-26)