Mattel Inc. (MAT) director converts 8,594 RSUs into common stock holdings

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Mattel Inc. director Adriana Cisneros exercised previously granted equity awards, converting Restricted Stock Units into common shares. On May 15, 2026, 8,594 RSUs granted on May 15, 2023 were settled, resulting in 8,594 shares of Mattel common stock. Following this settlement, Cisneros directly holds 37,669 common shares.

Insider Trade Summary

8,594 shares exercised/converted

Mixed 2 txns

Insider Cisneros Adriana

Role null

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	8,594	$0.00	--
Exercise	Common Stock	8,594	$0.00	--

Holdings After Transaction: Restricted Stock Units — 0 shares (Direct, null); Common Stock — 37,669 shares (Direct, null)

Footnotes (1)

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Key Figures

RSUs settled: 8,594 units Shares issued from RSUs: 8,594 shares Shares owned after transaction: 37,669 shares +2 more

5 metrics

RSUs settled 8,594 units Restricted Stock Units granted May 15, 2023 and settled May 15, 2026

Shares issued from RSUs 8,594 shares Mattel common stock issued upon RSU settlement on May 15, 2026

Shares owned after transaction 37,669 shares Direct holdings of Adriana Cisneros following RSU settlement

Exercise/settlement price $0.00 per unit Reported transaction price per RSU and per share for this settlement

Derivative exercises 1 transaction, 8,594 shares Exercise or conversion of derivative security as summarized in filing

Key Terms

Restricted Stock Units, Form 4, derivative security

3 terms

Restricted Stock Units financial

"the Reporting Person received a grant of 8,594 Restricted Stock Units ("RSUs") on May 15, 2023"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Form 4 regulatory

"As reported on a Form 4 dated May 15, 2023 and filed on May 17, 2023"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

derivative security financial

"transaction_code_description": "Exercise or conversion of derivative security""

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

Form 4 Insider Transactions: What Each Field Means →

05/19/2026 - 05:26 PM

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^*

Cisneros Adriana

(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)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/15/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/15/2026		M		8,594	A	⁽¹⁾	37,669	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Units	⁽¹⁾	05/15/2026		M			8,594	⁽¹⁾	⁽¹⁾	Common Stock	8,594	$0	0	D

Explanation of Responses:

1. As reported on a Form 4 dated May 15, 2023 and filed on May 17, 2023, the Reporting Person received a grant of 8,594 Restricted Stock Units ("RSUs") on May 15, 2023. The RSUs were fully vested on the grant date and are settled on the third anniversary of the grant date. On May 15, 2026, 100% of these RSUs were settled, resulting in the issuance of 8,594 shares of Mattel Common Stock.

Remarks:

	/s/ Tiffani Magri, Attorney-in-Fact for Adriana Cisneros	05/19/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Mattel (MAT) director Adriana Cisneros report?

Adriana Cisneros reported the settlement of previously granted equity awards. On May 15, 2026, 8,594 Restricted Stock Units were converted into 8,594 shares of Mattel common stock, increasing her direct share ownership as part of routine compensation.

How many Mattel (MAT) shares did Adriana Cisneros acquire in this Form 4?

She acquired 8,594 shares of Mattel common stock. These shares came from settling an equal number of fully vested Restricted Stock Units that were originally granted on May 15, 2023 and scheduled to settle on the third anniversary of the grant date.

What is Adriana Cisneros’ Mattel (MAT) ownership after this RSU settlement?

After the RSU settlement, Adriana Cisneros directly owns 37,669 shares of Mattel common stock. This reflects her updated position following the conversion of 8,594 Restricted Stock Units into common shares as reported in the Form 4 filing.

What were the terms of the Mattel (MAT) RSUs settled by Adriana Cisneros?

Cisneros received 8,594 Restricted Stock Units on May 15, 2023. The RSUs were fully vested on the grant date and were structured to be settled in Mattel common stock on the third anniversary, which occurred on May 15, 2026.

Does the Mattel (MAT) Form 4 show any open-market stock purchases or sales?

The Form 4 shows a derivative exercise and settlement of Restricted Stock Units, not open-market trades. The 8,594 shares were issued upon RSU settlement, and there are no reported open-market purchases or sales in this particular filing.