Mattel, Inc. (NASDAQ: MAT) has entered into a cooperation agreement with EdgePoint Investment Group Inc., an approximately 18% stockholder of the company, according to a press release from Mattel.

As part of the agreement, Mattel appointed Lee Matheson, a partner at EdgePoint, to its board of directors. The cooperation agreement includes voting, standstill, confidentiality, and other provisions, and will be filed with the Securities and Exchange Commission on a Form 8-K.

Matheson has a background in investment management, capital markets, and board service. Before joining EdgePoint, he co-founded Broadview Capital Management Inc., where he served as portfolio manager of the Broadview Dark Horse LP, a long/short investment fund focused on Canadian small-cap securities. He currently serves on the board of Tucows Inc., where he chairs the Governance Committee, and has previously served on the boards of several other companies. He holds a Chartered Financial Analyst designation.

Roger Lynch, chairman and CEO of Mattel, said: "We welcome Lee to Mattel's Board. Beyond his deep investor and public markets experience, his perspective as a Partner of Mattel's longstanding and largest shareholder adds a new dimension to our board as we advance our brand-centric strategy and capitalize on the potential of our business."

Matheson said: "EdgePoint has been a Mattel investor and supporter for many years. The firm has long believed in the value of the Company's world-class brands and its premier intellectual property. I look forward to working alongside Roger and the entire board in pursuit of the shared goal of unlocking Mattel's intrinsic value for the benefit of all shareholders."