Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
SINCLAIR CHRISTOPHER A
   2. Issuer Name and Ticker or Trading Symbol
MATTEL INC /DE/ [MAT] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Executive Chairman
(Last)
(First)
(Middle)
333 CONTINENTAL BOULEVARD		 3. Date of Earliest Transaction (Month/Day/Year)
08/01/2017
(Street)

EL SEGUNDO, CA 90245		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 08/01/2017   M   23,532 A (1) 122,467 D  
Common Stock 08/01/2017   F   6,942 (2) D $ 19.72 115,525 D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Restricted Stock Units (1) 08/01/2017   M     23,532   (1)   (1) Common Stock 23,532 $ 0 47,780 D  
Employee Stock Option - Right to Buy $ 19.72 08/01/2017   A   272,480     (3) 08/01/2027 Common Stock 272,480 $ 0 272,480 D  
Restricted Stock Units (4) 08/01/2017   A   50,710     (5)   (5) Common Stock 50,710 $ 0 50,710 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
SINCLAIR CHRISTOPHER A
333 CONTINENTAL BOULEVARD
EL SEGUNDO, CA 90245		   X     Executive Chairman  

Signatures

 /s/ Julie Kwok, Attorney-in-Fact for Christopher A. Sinclair   08/03/2017
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(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).
(1) As reported on a Form 4 dated August 1, 2016 and filed on August 3, 2016, the Reporting Person received a grant of 71,312 Restricted Stock Units ("RSUs" or "Units") on August 1, 2016. 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. On August 1, 2017, the first 33% of these RSUs vested, resulting in the issuance of 23,532 shares of Mattel, Inc. Common Stock.
(2) Pursuant to the terms of the August 1, 2016 RSU grant, 6,942 shares of Mattel, Inc. Common Stock were automatically withheld at vesting to cover required tax withholding.
(3) The option was granted on August 1, 2017 pursuant to the Mattel, Inc. Amended and Restated 2010 Equity and Long-Term Compensation Plan (the "Plan"). The option vests and becomes exercisable with regard to (a) 33% of the shares granted on the first anniversary of the date of grant, (b) an additional 33% of the shares granted on the second anniversary of the date of grant, and (c) the remaining 34% of the shares granted on the third anniversary of the date of grant.
(4) The RSUs were granted on August 1, 2017 pursuant to 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).
(5) 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.

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