A graduate of the HEI school in Lille, Catherine Trevet joined the SNCF in 1999. She held various management positions in the Equipment branch, before being appointed TER production director in Burgundy-Franche-Comté. In 2018, she had joined the Occitanie region as deputy regional director of SNCF Mobilités, director of the TER contract, director of territorial relations and communication. Catherine Trevet has been SNCF Réseau Occitanie Territorial Director since March 1, 2022.