ManeStage Theatre Company 15127 Main St E, Sumner, WA98390 The ManeStage Theatre Company is a non-profit community theatre organization. It stages several production each year…More with the goal of educating and stimulating audiences and serving the community with high-quality family-focused entertainment. The organization operates out of the Sumner Performing Centers and all performances and auditions are held there. The box office opens 1 hour before showtime. Upcoming shows and auditions are listed on the website.