#1 As reported on a Form 4 dated August 2, 2021 and filed on August 3, 2021, the Reporting Person received a grant of 23,962 Restricted Stock Units ("RSUs" or "Units") on August 2, 2021. 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 August 2, 2024, the final 34% of these RSUs vested, resulting in the issuance of 8,148 shares of Mattel, Inc. Common Stock.

#2 Pursuant to the terms of the August 2, 2021 RSU grant, 3,675 shares of Mattel, Inc. Common Stock were automatically withheld at vesting to cover required tax withholding.