Ubisoft Entertainment S.A. is a French computer and video game publisher and developer, partially owned by Electronic Arts, with headquarters in Montreuil-sous-Bois, France. The company has a worldwide presence with studios in 17 countries and subsidiaries in 28 countries.
As of 2008, it was the third-largest independent video game publisher in Europe, and the fourth largest in the United States. Ubisoft's revenue for 2002-2003 was € 453 million; for fiscal year 2003-2004, this grew to €508 million. As of 2009, Ubisoft employed more than 5,750 people, of which over 4,800 are classed as working in production.The company's largest development studio is Ubisoft Montreal, which in 2004 employed approximately 1,600 people. Yves Guillemot, a founding brother, was the chairman and CEO. As for 2008–2009, Ubisoft's revenue was €1,058 million, reaching the 1 billion euro milestone for the first time in its history.