Mattel supply chief sells 39K shares at $15

Rhea-AI Filing Summary

MATTEL INC (MAT) executive vice president and chief supply chain officer Isaias Zanatta Roberto Jacobo sold 39,083 shares of common stock on August 31, 2026 in an open-market or private transaction at a weighted average price of $15.017 per share, with individual trade prices ranging from $15.000 to $15.045. After this sale, he directly held 144,390 shares of Mattel common stock. No Rule 10b5-1 trading plan is reported in connection with this transaction.

Insider Trade Summary

Net Seller: 39,083 shares

Net Sell 1 txn

Insider Isaias Zanatta Roberto Jacobo

Role EVP & Chief Supply Chain Offr

Sold 39,083 shs ($587K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	39,083	$15.017	$587K

Holdings After Transaction: Common Stock — 144,390 shares (Direct)

Footnotes (1)

1. F1. This transaction was executed in multiple trades at prices ranging from $15.000 to $15.045. The price reported reflects the weighted average sale price, rounded to the nearest tenth of a cent. The Reporting Person hereby undertakes to provide to the SEC staff, the issuer or a security holder of the issuer, upon request, full information regarding the number of shares and prices at which the transactions were effected.

Key Figures

Shares sold: 39,083 shares Weighted average sale price: $15.017 per share Sale price range: $15.000 to $15.045 per share +1 more

4 metrics

Shares sold 39,083 shares Common stock sale reported for August 31, 2026

Weighted average sale price $15.017 per share Common stock sold in multiple trades on August 31, 2026

Sale price range $15.000 to $15.045 per share Price range of multiple trades included in the August 31, 2026 sale

Shares held after transaction 144,390 shares Direct holdings of common stock after the August 31, 2026 sale

Key Terms

weighted average sale price, open market or private transaction, Rule 10b5-1 trading plan

3 terms

weighted average sale price financial

"The price reported reflects the weighted average sale price, rounded to the nearest tenth of a cent."

open market or private transaction financial

"Sale in open market or private transaction"

Rule 10b5-1 trading plan regulatory

"No Rule 10b5-1 trading plan is reported in connection with this transaction"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Mattel (MAT) disclose for August 31, 2026?

Mattel disclosed that executive vice president and chief supply chain officer Isaias Zanatta Roberto Jacobo sold 39,083 shares of common stock on August 31, 2026 in an open-market or private transaction.

At what price did the Mattel (MAT) executive sell shares on August 31, 2026?

The shares were sold at a weighted average price of $15.017 per share, with individual trades executed at prices ranging from $15.000 to $15.045, according to the filing footnote.

How many Mattel (MAT) shares does the executive hold after the reported sale?

Following the sale reported for August 31, 2026, Isaias Zanatta Roberto Jacobo directly holds 144,390 shares of Mattel common stock.

Was the August 31, 2026 Mattel (MAT) insider sale under a Rule 10b5-1 plan?

No. The filing indicates that the August 31, 2026 sale by Isaias Zanatta Roberto Jacobo was not reported as being made pursuant to a Rule 10b5-1 trading plan.

How was the sale price for the Mattel (MAT) insider transaction calculated?

The reported sale price of $15.017 per share is described as a weighted average sale price, rounded to the nearest tenth of a cent, based on multiple trades between $15.000 and $15.045 per share.

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

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 09/02/2026 - 06:21 PM EDT Accepted by SEC EDGAR 09/02/2026 - 06:21 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Isaias Zanatta Roberto Jacobo

(Last) (First) (Middle)

333 CONTINENTAL BOULEVARD

(Street)

EL SEGUNDO CALIFORNIA 90245

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
MATTEL INC /DE/ [ MAT ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP & Chief Supply Chain Offr

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/31/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	08/31/2026		S		39,083	D	$15.017(1)	144,390	D

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 Securities Underlying Derivative Security (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: 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

Explanation of Responses:

1. This transaction was executed in multiple trades at prices ranging from $15.000 to $15.045. The price reported reflects the weighted average sale price, rounded to the nearest tenth of a cent. The Reporting Person hereby undertakes to provide to the SEC staff, the issuer or a security holder of the issuer, upon request, full information regarding the number of shares and prices at which the transactions were effected.

Remarks:

	/s/ Tiffani Magri, Attorney-in-Fact for Roberto Jacobo Isaias Zanatta	09/02/2026
	** Signature of Reporting Person	Date
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 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).
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 4: SEC 1474 (03-26)