[SCHEDULE 13G/A] Mattel, Inc. SEC Filing

Rhea-AI Filing Summary

EdgePoint Investment Group reports beneficial ownership of 40,823,584 shares of Mattel, Inc. common stock, representing 12.64% of the class. EdgePoint holds 29,535,068 shares with sole voting and dispositive power and an additional 11,288,516 shares with shared voting and dispositive power, indicating it manages these holdings for client funds. The filing is an amendment (No. 9) to a Schedule 13G/A and includes a certification that the shares are held in the ordinary course of business and not for the purpose of changing control. The form lists EdgePoint's Toronto address and identifies the reporting person as an investment adviser and financial institution.

Positive

• Material disclosed stake: EdgePoint beneficially owns 40,823,584 shares, equal to 12.64% of Mattel's common stock.
• Clear voting/dispositive breakdown: 29,535,068 shares with sole voting/dispositive power and 11,288,516 shares with shared power.
• Filed as Schedule 13G/A: Reporting as an investment adviser/financial institution with a certification that holdings are in the ordinary course of business.

Negative

• None.

Insights

Financial Analyst

TL;DR: EdgePoint now discloses a meaningful 12.64% stake in Mattel, signaling substantial ownership and voting influence over common stock.

EdgePoint's reported 40.8 million-share position equals 12.64% of Mattel's outstanding common stock, a material stake by typical institutional standards. The split between sole and shared voting/dispositive powers (approximately 72% sole, 28% shared) clarifies control mechanics across client vehicles. The filing is an amendment, suggesting prior disclosures updated to reflect current holdings or allocations among funds. For investors, this is a material ownership disclosure but contains no operational or transactional detail beyond holdings and certification of ordinary-course intent.

Corporate Governance Expert

TL;DR: A 12.64% holding requires careful governance monitoring; EdgePoint asserts ordinary-course intent in its certification.

The Schedule 13G/A shows EdgePoint exercises both sole and shared voting rights across its managed accounts, with sole voting power over 29.5 million shares. The certification states these shares are not held to change or influence control, which aligns with Schedule 13G reporting rather than 13D activist treatment. The amendment status indicates reporting updates rather than disclosure of a new activist campaign. This is material from a governance perspective because a holder at this level can affect shareholder votes depending on alignments with other holders.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 9)

MATTEL, INC.

(Name of Issuer)

Common stock, $1.00 per share

(Title of Class of Securities)

577081102

(CUSIP Number)

06/30/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 577081102

1

Names of Reporting Persons

EdgePoint Investment Group Inc.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

ONTARIO, CANADA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 29,535,068.00
6	Shared Voting Power 11,288,516.00
7	Sole Dispositive Power 29,535,068.00
8	Shared Dispositive Power 11,288,516.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

40,823,584.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

12.64 %

12

Type of Reporting Person (See Instructions)

IA, FI

SCHEDULE 13G

Item 1.
(a)	Name of issuer: MATTEL, INC.
(b)	Address of issuer's principal executive offices: 333 Continental Blvd., El Segundo, CA 90245
Item 2.
(a)	Name of person filing: This Schedule 13G is being filed on behalf of EdgePoint Investment Group Inc. ("EdgePoint") with respect to the Common Stock, with par value $1.00 per share ("Common Stock"), of MATTEL, INC. (the "Issuer"). EdgePoint acts as investment manager to, and exercises investment discretion with respect to the Common Stock directly owned by, a number of private investment funds and mutual fund trusts.
(b)	Address or principal business office or, if none, residence: 150 Bloor Street West, Suite 700, Toronto, Ontario M5S 2X9, Canada
(c)	Citizenship: Ontario, Canada
(d)	Title of class of securities: Common stock, $1.00 per share
(e)	CUSIP No.: 577081102
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
	NA
Item 4.	Ownership
(a)	Amount beneficially owned: 40,823,584
(b)	Percent of class: 12.64%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 29,535,068
	(ii) Shared power to vote or to direct the vote: 11,288,516
	(iii) Sole power to dispose or to direct the disposition of: 29,535,068
	(iv) Shared power to dispose or to direct the disposition of: 11,288,516
Item 5.	Ownership of 5 Percent or Less of a Class.
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

EdgePoint Investment Group Inc.

Signature:	Sayuri Childs
Name/Title:	Sayuri Childs | Chief Compliance Officer
Date:	08/14/2025

FAQ

How many Mattel (MAT) shares does EdgePoint own?

EdgePoint beneficially owns 40,823,584 shares of Mattel common stock as reported in the filing.

What percent of Mattel does EdgePoint's stake represent?

The reported stake represents 12.64% of Mattel's common stock.

How much voting power does EdgePoint have over Mattel shares?

EdgePoint has sole voting power over 29,535,068 shares and shared voting power over 11,288,516 shares.

What type of SEC form was filed for this disclosure?

The disclosure was made via a Schedule 13G/A (Amendment No. 9) under the Securities Exchange Act of 1934.

Where is EdgePoint Investment Group organized and located?

EdgePoint is organized in Ontario, Canada with a principal business office at 150 Bloor Street West, Suite 700, Toronto, Ontario M5S 2X9.

Does the filing state EdgePoint intends to change control of Mattel?

The certification in the filing states the securities are held in the ordinary course of business and were not acquired to change or influence control of the issuer.