# EdgePoint Held 17.57% of Mattel Shares as of June 30 By John Kim Canonical URL: https://www.tokenpost.com/news/business/37767 Published: 2026-10-22T11:18:34.000Z Updated: 2026-10-22T11:18:34.000Z Section: Business > Mattel announced Lee Matheson’s board appointment on Oct. 21 under a cooperation agreement covering voting, standstill and confidentiality terms. Mattel appointed Lee Matheson, an EdgePoint Investment Group Inc. partner, to its board under an Oct. 21 cooperation agreement; EdgePoint held 17.57% of the toy maker’s shares as of June 30. EdgePoint held 51,047,454 shares as of June 30. EdgePoint serves as investment manager to private funds and mutual fund trusts holding Mattel stock. The exact holding adds detail to [earlier coverage of Matheson’s appointment](). Matheson co-founded Broadview Capital Management and serves on the Tucows board, where he chairs the Governance Committee. The agreement covers voting, standstill, confidentiality and other provisions. Mattel plans to file it with the Securities and Exchange Commission on Form 8-K. ## Links in this article - [earlier coverage of Matheson’s appointment](https://www.tokenpost.com/news/business/37652)