MATTEL INC /DE/

Evaluation of Disclosure Controls and Procedures

As of September 30, 2026, Mattel's disclosure controls and procedures were evaluated, with the participation of Mattel's principal executive officer and principal financial officer, to assess whether they are effective in providing reasonable assurance that information required to be disclosed by Mattel in the reports that it files or submits under the Securities Exchange Act of 1934, as amended, is accumulated and communicated to management, including its principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure and to provide reasonable assurance that such information is recorded, processed, summarized, and reported within the time periods specified in the Securities and Exchange Commission's rules and forms. Based on this evaluation, Roger Lynch, Mattel's principal executive officer, and Peter Griffith, Mattel's principal financial officer, concluded that these disclosure controls and procedures were effective to provide reasonable assurance as of September 30, 2026.

Changes in Internal Control Over Financial Reporting

There were no changes in Mattel's internal control over financial reporting during the quarter ended September 30, 2026 that materially affected, or are reasonably likely to materially affect, Mattel's internal control over financial reporting.

PART II—OTHER INFORMATION