person · Reporting owner
Stanichi Roberto Seixas
Disclosed activity across 1 company
Sign in to followReported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| MATTEL INC /DE/MAT · Entity 1046 | Pres., Chief Mktg & Brand Ofc | September 30, 2026 | October 03, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
MATTEL INC /DE/
Report date September 30, 2026 · Filed October 03, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 46,771 |
Ending reported balance
After 2026-09-30 transaction · row 2
2 source rows · reconciled sequenceRow 1 · 2026-09-30 · Exercise / conversion · Acquired 1,715 · Balance 47,644 F1: As reported on a Form 3 dated July 29, 2026 and filed on August 4, 2026, the Reporting Person received a grant of 5,199 Restricted Stock Units ("RSUs" or "Units") on September 30, 2025. 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, subject to tax withholding. On September 30, 2026, the first 33% of these RSUs vested, resulting in the issuance of 1,715 shares of Mattel, Inc. Common Stock. Row 2 · 2026-09-30 · Tax withholding · Disposed 873 · Balance 46,771 F2: Pursuant to the terms of the September 30, 2025 RSU grant, 873 shares of Mattel, Inc. Common Stock were automatically withheld at vesting to cover required tax withholding. |
| Restricted Stock UnitsSEC Table II · derivative / convertible security | Direct | 3,484 |
Reported balance
After 2026-09-30 transaction · row 3
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 3 · 2026-09-30 · Exercise / conversion · Disposed 1,715 · Balance 3,484 F1: As reported on a Form 3 dated July 29, 2026 and filed on August 4, 2026, the Reporting Person received a grant of 5,199 Restricted Stock Units ("RSUs" or "Units") on September 30, 2025. 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, subject to tax withholding. On September 30, 2026, the first 33% of these RSUs vested, resulting in the issuance of 1,715 shares of Mattel, Inc. Common Stock. |
Filing footnotes · ownership attribution and instrument terms
F1: As reported on a Form 3 dated July 29, 2026 and filed on August 4, 2026, the Reporting Person received a grant of 5,199 Restricted Stock Units ("RSUs" or "Units") on September 30, 2025. 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, subject to tax withholding. On September 30, 2026, the first 33% of these RSUs vested, resulting in the issuance of 1,715 shares of Mattel, Inc. Common Stock.
F2: Pursuant to the terms of the September 30, 2025 RSU grant, 873 shares of Mattel, Inc. Common Stock were automatically withheld at vesting to cover required tax withholding.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| September 30, 2026 Filed Oct 3, 2026 00:22 UTC | MATTEL INC /DE/ MAT · Entity 1046 | Exercise / conversionRestricted Stock Units · Derivative | 1,715 | $0.00 | $0.00 |
DisclosureSEC source: 0002148131-26-000006 · wk-form4_1790972523.xml · derivative · entry 3 Stanichi Roberto Seixas · CIK 0002148131 · Pres., Chief Mktg & Brand Ofc 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 3,484 Underlying: Common Stock · 1,715 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_price: As reported on a Form 3 dated July 29, 2026 and filed on August 4, 2026, the Reporting Person received a grant of 5,199 Restricted Stock Units ("RSUs" or "Units") on September 30, 2025. 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, subject to tax withholding. On September 30, 2026, the first 33% of these RSUs vested, resulting in the issuance of 1,715 shares of Mattel, Inc. Common Stock. F1 · derivative.exercise_date: As reported on a Form 3 dated July 29, 2026 and filed on August 4, 2026, the Reporting Person received a grant of 5,199 Restricted Stock Units ("RSUs" or "Units") on September 30, 2025. 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, subject to tax withholding. On September 30, 2026, the first 33% of these RSUs vested, resulting in the issuance of 1,715 shares of Mattel, Inc. Common Stock. F1 · derivative.expiration_date: As reported on a Form 3 dated July 29, 2026 and filed on August 4, 2026, the Reporting Person received a grant of 5,199 Restricted Stock Units ("RSUs" or "Units") on September 30, 2025. 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, subject to tax withholding. On September 30, 2026, the first 33% of these RSUs vested, resulting in the issuance of 1,715 shares of Mattel, Inc. Common Stock. Read SEC document |
| September 30, 2026 Filed Oct 3, 2026 00:22 UTC | MATTEL INC /DE/ MAT · Entity 1046 | Tax withholdingCommon Stock | 873 | $12.66 | $11,052.18 |
DisclosureSEC source: 0002148131-26-000006 · wk-form4_1790972523.xml · nonDerivative · entry 2 Stanichi Roberto Seixas · CIK 0002148131 · Pres., Chief Mktg & Brand Ofc 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 46,771 F2 · shares: Pursuant to the terms of the September 30, 2025 RSU grant, 873 shares of Mattel, Inc. Common Stock were automatically withheld at vesting to cover required tax withholding. Read SEC document |
| September 30, 2026 Filed Oct 3, 2026 00:22 UTC | MATTEL INC /DE/ MAT · Entity 1046 | Exercise / conversionCommon Stock | 1,715 | Not disclosed | Not disclosed |
DisclosureSEC source: 0002148131-26-000006 · wk-form4_1790972523.xml · nonDerivative · entry 1 Stanichi Roberto Seixas · CIK 0002148131 · Pres., Chief Mktg & Brand Ofc 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 47,644 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: As reported on a Form 3 dated July 29, 2026 and filed on August 4, 2026, the Reporting Person received a grant of 5,199 Restricted Stock Units ("RSUs" or "Units") on September 30, 2025. 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, subject to tax withholding. On September 30, 2026, the first 33% of these RSUs vested, resulting in the issuance of 1,715 shares of Mattel, Inc. Common Stock. Read SEC document |
| July 31, 2026 Filed Aug 4, 2026 21:53 UTC | MATTEL INC /DE/ MAT · Entity 1046 | GrantRestricted Stock Units · Derivative | 132,538 | $0.00 | $0.00 |
DisclosureSEC source: 0002148131-26-000004 · wk-form4_1785880416.xml · derivative · entry 2 Stanichi Roberto Seixas · CIK 0002148131 · Pres., Chief Mktg & Brand Ofc 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 132,538 Underlying: Common Stock · 132,538 shares Expires not disclosed F1 · derivative.exercise_price: 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). F3 · derivative.exercise_date: 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. F3 · derivative.expiration_date: 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. Read SEC document |
| July 31, 2026 Filed Aug 4, 2026 21:53 UTC | MATTEL INC /DE/ MAT · Entity 1046 | GrantRestricted Stock Units · Derivative | 62,956 | $0.00 | $0.00 |
DisclosureSEC source: 0002148131-26-000004 · wk-form4_1785880416.xml · derivative · entry 1 Stanichi Roberto Seixas · CIK 0002148131 · Pres., Chief Mktg & Brand Ofc 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 62,956 Underlying: Common Stock · 62,956 shares Expires not disclosed F1 · derivative.exercise_price: 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). F2 · derivative.exercise_date: 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. F2 · derivative.expiration_date: 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. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.