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Mattel appoints EdgePoint's Lee Matheson to board

Mattel's appointment and nomination commitments are tied to EdgePoint maintaining at least 10% beneficial ownership of Mattel's outstanding common stock.

(Moderate)

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Form Type
SCHEDULE 13D

Rhea-AI Filing Summary

Mattel Inc. entered into a cooperation agreement with EdgePoint Investment Group Inc., which beneficially owned 50,515,811 shares of Mattel common stock, approximately 17.68% of outstanding shares. Mattel increased its board by one and appointed Lee Matheson, Partner of EdgePoint, effective October 21, 2026; Mattel also agreed to nominate him for election at the 2027 annual meeting and recommend his election.

EdgePoint said the shares were acquired through open market purchases for funds and accounts it manages at an aggregate purchase price of approximately US$829,702,537, excluding brokerage commissions. Mattel's appointment and nomination obligations end if EdgePoint ceases to beneficially own, in the aggregate, at least 10% of outstanding common stock. Mattel also agreed to reimburse EdgePoint's reasonable, documented out-of-pocket fees and expenses, including legal expenses, up to US$500,000.

Filing Explained

Agreement binds EdgePoint to time-limited voting and standstill commitments and bars Mattel from raising the special-meeting ownership threshold through the day after the 2028 meeting.

EdgePoint's October 21 cooperation agreement is signed, and its standstill and voting commitments, along with specified limits on Mattel's governance changes, apply for stated periods.

During the Cooperation Period, EdgePoint is subject to standstill restrictions and voting commitments; the period runs until five business days after the later of the day following the 2027 annual meeting or the date the director or a successor ceases to serve.

Without EdgePoint's prior written consent, Mattel may not amend or propose amendments raising the ownership threshold for stockholders to call a special meeting, from 2026-10-21 through the day after the 2028 annual meeting.

During the Cooperation Period, Mattel also may not, without that consent, make charter or bylaw changes that disproportionately adversely affect EdgePoint's rights as a stockholder.

Beneficially owned shares 50,515,811 shares Mattel common stock
Percentage of outstanding shares Approximately 17.68% EdgePoint's reported beneficial ownership
Shares outstanding 285.7 million shares As of July 24, 2026; basis for the reported ownership percentage
Aggregate purchase price Approximately US$829,702,537 Excluding brokerage commissions
Beneficial ownership threshold At least 10% Threshold for Mattel's appointment and nomination obligations
Expense reimbursement cap US$500,000 Mattel's reimbursement of EdgePoint's specified fees and expenses
beneficially owned regulatory
"beneficially owned 50,515,811.00 shares of Common Stock"
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.
investment discretion financial
"exercises investment discretion with respect to the shares"
Cooperation Period regulatory
"The Cooperation Period is defined as beginning on October 21, 2026"
standstill restrictions regulatory
"customary standstill restrictions, voting commitments, and other provisions"
Standstill restrictions are agreements or legal limits that pause or limit certain actions by creditors, shareholders, or counterparties—such as demanding repayment, selling large blocks of shares, or launching takeover moves—for a set period. Like pressing a temporary pause button in a dispute or negotiation, they matter to investors because they affect liquidity, the timing of potential exits, and the balance of control and risk while parties work toward a resolution.

FAQ

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

How many MAT shares does EdgePoint beneficially own?

EdgePoint beneficially owned 50,515,811 shares of Mattel common stock, approximately 17.68% of outstanding shares. EdgePoint acts as investment manager and exercises investment discretion over shares directly owned by mutual fund trusts and separately managed accounts.

Who did Mattel appoint to its board under the agreement?

Mattel appointed Lee Matheson, Partner of EdgePoint, to its board effective October 21, 2026, after increasing the board's size by one. Mattel agreed to nominate him for election at its 2027 annual meeting for a term expiring at the 2028 annual meeting, subject to the Cooperation Agreement.

How much will Mattel reimburse EdgePoint under the cooperation agreement?

Mattel agreed to reimburse EdgePoint for reasonable and documented out-of-pocket fees and expenses, including legal expenses, up to US$500,000. The reimbursement relates to EdgePoint's investment in Mattel or arises out of or relates to the Cooperation Agreement.

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

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577081102

(CUSIP Number)
Sayuri Childs
EdgePoint Investment Group Inc., 150 Bloor St. W., Suite 700
Toronto, A6, M5S 2X9
1 (416) 963-9353


Alan Goudiss
Allen Overy Shearman Sterling US LLP, 599 Lexington Avenue
New York, NY, 10022
1 (212) 848-4000


Scott Petepiece
Allen Overy Shearman Sterling US LLP, 599 Lexington Avenue
New York, NY, 10022
1 (212) 848-4000


Sean Skiffington
Allen Overy Shearman Sterling US LLP, 599 Lexington Avenue
New York, NY, 10022
1 (212) 848-4000

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)
10/21/2026

(Date of Event Which Requires Filing of This Statement)


If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).




schemaVersion:


SCHEDULE 13D






SCHEDULE 13D


EdgePoint Investment Group Inc.
Signature:/s/ Sayuri Childs
Name/Title:Sayuri Childs/Chief Compliance Officer
Date:10/22/2026

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