Mika Kallio
At the 2013 French Grand Prix, Siméon became the first Belgian rider since Didier de Radiguès in to take a podium finish, when he finished third behind Marc VDS Racing Team riders Scott Redding and Mika Kallio. Later in the season, Siméon took pole position for the German Grand Prix, the first such result for a Belgian since de Radiguès in . Two years later, Siméon achieved his first victory at the 2015 German Grand Prix at the Sachsenring. In doing so, he became only the third Belgian rider to win a motorcycle Grand Prix, after de Radiguès and Julien Vanzeebroeck. Siméon won the 2019–20 FIM Endurance World Championship with the Suzuki Endurance Racing Team with team-mates Gregg Black and Etienne Masson.