Mattel adds EdgePoint Investment executive Lee Matheson to board

Key facts

• Lee Matheson, a partner at EdgePoint Investment Group, has joined Mattel's board.
• EdgePoint Investment Group is Mattel's largest shareholder with an 18% stake.
• The appointment follows pressure from investors for Mattel to consider a sale.

Mattel has appointed Lee Matheson, a partner at its largest shareholder EdgePoint Investment Group, to its board of directors. The toymaker, which faces pressure from investors to consider a sale due to weak performance and leadership changes, announced the immediate effect of Matheson's appointment on Wednesday, October 21, 2026. EdgePoint holds approximately 18% of Mattel's stock. Roger Lynch, Mattel's Chairman and CEO, welcomed Matheson, citing his investor experience and perspective as a major shareholder. Professor Noreena Hertz, Chair of Mattel’s Governance and Social Responsibility Committee, highlighted Matheson's public company board experience and background in investment management.