Founded by Jean-François Collet at the dawn of the 3rd millennium, Grand Chelem Event SA has rapidly grown to become the leader in event management in French-speaking Switzerland. Today, the agency has a staff of about 20 people from a wide range of professional backgrounds.
The company is headquartered in Renens (VD), in the Lausanne region, and also has a representative office in Gstaad (BE). Since 2015, it has belonged to the Alain Joseph Phida Invest Group, which employs nearly 500 people in French-speaking Switzerland. It also owns 50% of the capital of Human Sports Management AG (HSM), a company based in the Lucerne region that specializes in the development of mass sports and the management of professional athletes. This collaboration allows Grand Slam to benefit from important support in the German-speaking part of Switzerland, particularly in the search for sponsors. Grand Slam and HSM have a team of ten sales representatives and a network of more than 5000 companies in Switzerland and Europe!