Primus have added four shows to their spring tour. The trio will now perform in Redding, CA’s Redding Civic Auditorium (6/10), Salt Lake City, UT’s The Rail Event Center (6/19), Grand Junction, CO’s Avalon Theatre (6/20) and Modesto, CA’s Modesto Centre Plaza (6/24). The group’s US spring run kicks off at Columbia, MO’s The Blue Note on May 3.