MAT files Form 144 showing insider sale notices

MAT submitted a Form 144 notice reporting proposed insider dispositions.

Rhea-AI Filing Summary

MAT submitted a Form 144 notice reporting proposed insider dispositions. The filing lists restricted stock vesting of 13,810 shares on 05/07/2026 and two sale entries attributed to Steve Totzke: 101,902 shares on 05/05/2026 and 93,092 shares on 05/06/2026. Dollar amounts are shown alongside those sales in the excerpt.

Insights

Corporate Securities Analyst

Form 144 lists proposed insider sales and a restricted stock vesting event.

The excerpt shows a restricted stock vesting event of 05/07/2026 for 13,810 shares and two reported dispositions by Steve Totzke on 05/05/2026 and 05/06/2026 for 101,902 and 93,092 shares, respectively. The filing format indicates proposed sales rather than completed open-market trades.

Cash‑flow treatment and whether sales were executed are not specified in the excerpt. Subsequent regulatory filings or broker confirmations would show completion and exact transaction methods.

Key Figures

Restricted shares vesting: 13,810 shares Proposed sale (Totzke): 101,902 shares Proposed sale (Totzke): 93,092 shares +2 more

5 metrics

Restricted shares vesting 13,810 shares Restricted Stock Vesting on <date>05/07/2026</date>

Proposed sale (Totzke) 101,902 shares Reported sale date <date>05/05/2026</date>

Proposed sale (Totzke) 93,092 shares Reported sale date <date>05/06/2026</date>

Reported proceeds (entry 1) $1,508,149.60 Associated with 101,902 shares on <date>05/05/2026</date>

Reported proceeds (entry 2) $1,396,380.00 Associated with 93,092 shares on <date>05/06/2026</date>

Key Terms

Restricted Stock Vesting, Form 144, Securities To Be Sold

3 terms

Restricted Stock Vesting financial

"Restricted Stock Vesting | Issuer | 05/07/2026"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

Form 144 regulatory

"Filer Information | 144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Securities To Be Sold financial

"144: Securities To Be Sold | Common | 05/07/2026"

FAQ

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

What does MAT's Form 144 report?

The filing reports proposed insider dispositions and a restricted stock vesting event. It lists 13,810 shares vesting on 05/07/2026 and two sale entries for Steve Totzke on 05/05/2026 and 05/06/2026.

How many shares did Steve Totzke report on the filing?

The excerpt shows two reported entries: 101,902 shares on 05/05/2026 and 93,092 shares on 05/06/2026. These figures appear with dollar amounts in the provided content.

Does Form 144 mean the shares were sold?

No. Form 144 is a notice of proposed sale by affiliates under resale rules. The excerpt shows proposed/reported dispositions; execution and settlement details are not provided in the excerpt.

Was any cash amount associated with the sales disclosed?

Yes, the excerpt shows dollar amounts alongside the two Steve Totzke entries: $1,508,149.60 for 101,902 shares and $1,396,380.00 for 93,092 shares. The filing excerpt ties values to those dates.

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

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Accepted by SEC EDGAR 05/26/2026 - 04:52 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001666142
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	MATTEL INC /DE/
SEC File Number	001-05647
Address of Issuer	333 CONTINENTAL BLVD EL SEGUNDO CALIFORNIA 90245
Phone	3102522000
Name of Person for Whose Account the Securities are To Be Sold	TOTZKE STEVE
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Former Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	13810	208590.56	290600000	05/26/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	05/07/2026	Restricted Stock Vesting	Issuer			13810	05/07/2026	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Steve Totzke 333 Continental Blvd. El Segundo CA 90245-5012	Common	05/05/2026	101902	1508149.60
Steve Totzke 333 Continental Blvd. El Segundo CA 90245-5012	Common	05/06/2026	93092	1396380.00

144: Remarks and Signature

Remarks
Date of Notice	05/26/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Steve Totzke
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)