EdgePoint reports 15.23% ownership stake in Mattel (MAT)

Rhea-AI Filing Summary

EdgePoint Investment Group Inc., an Ontario-based investment adviser, reported beneficial ownership of 47,341,242 shares of Mattel, Inc. common stock as of 12/31/2025, representing 15.23% of the outstanding class.

EdgePoint has sole voting and dispositive power over 33,463,425 shares and shared voting and dispositive power over 13,877,817 shares, held for private investment funds and mutual fund trusts it manages. EdgePoint certifies the position is held in the ordinary course of business and not for the purpose of changing or influencing control of Mattel.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 11)

MATTEL INC /DE/

(Name of Issuer)

Common stock, $1.00 per share

(Title of Class of Securities)

577081102

(CUSIP Number)

12/31/2025

(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 33,463,425.00
6	Shared Voting Power 13,877,817.00
7	Sole Dispositive Power 33,463,425.00
8	Shared Dispositive Power 13,877,817.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

47,341,242.00

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)

15.23 %

12

Type of Reporting Person (See Instructions)

IA, FI

SCHEDULE 13G

Item 1.
(a)	Name of issuer: MATTEL INC /DE/
(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: 47,341,242.00
(b)	Percent of class: 15.23%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 33,463,425
	(ii) Shared power to vote or to direct the vote: 13,877,817
	(iii) Sole power to dispose or to direct the disposition of: 33,463,425
	(iv) Shared power to dispose or to direct the disposition of: 13,877,817
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
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:	02/17/2026

FAQ

What ownership stake in Mattel (MAT) does EdgePoint report?

EdgePoint Investment Group Inc. reports beneficial ownership of 47,341,242 Mattel common shares, representing 15.23% of the outstanding class. This reflects a significant institutional position disclosed on a Schedule 13G/A as of December 31, 2025.

How much voting power does EdgePoint have in Mattel (MAT)?

EdgePoint reports sole voting power over 33,463,425 Mattel shares and shared voting power over 13,877,817 shares. In total, these positions give EdgePoint influence over 47,341,242 shares through the funds and trusts it manages.

In what capacity does EdgePoint hold Mattel (MAT) shares?

EdgePoint acts as investment manager and exercises investment discretion for various private investment funds and mutual fund trusts that directly own Mattel common stock. EdgePoint is classified as an investment adviser under SEC rules in this ownership filing.

Is EdgePoint’s Mattel (MAT) stake intended to influence control of the company?

EdgePoint certifies the Mattel shares were acquired and are held in the ordinary course of business. It states they were not acquired and are not held to change or influence control of Mattel, other than limited activities related to proxy nomination rules.

What type of SEC filing did EdgePoint submit for its Mattel (MAT) holdings?

EdgePoint filed an amended Schedule 13G (Schedule 13G/A) reporting its beneficial ownership of Mattel common stock. This form is typically used by certain institutional investors to report sizable holdings without an activist control intent.