Josh Costello is the Executive Artistic Director of the Lark Theater, a nonprofit arthouse movie theatre in Marin County. Previously, he was the Artistic Director of Aurora Theatre Company, where he directed the world premiere of Jonathan Spector’s Tony-winning Eureka Day.

Throughout his career, Josh has worked to make theatre more accessible for more people, sharing a passion for the visceral experience of live theatre with new audiences and underserved communities. He was the founding Artistic Director of Impact Theatre, which built a new audience of people in their teens and twenties. As the Artistic Director of Expanded Programs at Marin Theatre, Josh created and administered several programs that built relationships with new audiences. At Aurora, Josh initiated student matinee and Community Partner programs and led a revision of Aurora’s mission to emphasize the theatre’s role as storyteller to the community.

Josh has directed three world premieres to win the Glickman Award for Best New Play in the Bay Area: Jonathan Spector’s Eureka Day and This Much I Know at Aurora, and Aaron Loeb’s Ideation at SF Playhouse, which transferred to 59E59 in NYC, won the Theatre Bay Area Award for Outstanding Direction, and was named a NY Times Critic’s Pick. At Aurora, Josh also directed the second production of Liz Duffy Adams’ Born with Teeth, The Importance of Being Earnest, Detroit, The Heir Apparent, Exit Strategy, and Wittenberg. Other directing work includes My Children! My Africa!, Lovers & Executioners, and the 2025 production of Eureka Day at Marin Theatre, House of Lucky at Magic Theatre, the world premieres of Lauren Gunderson’s Toil & Trouble and Zayd Dohrn’s Reborning, and his adaptations of Cory Doctorow’s Little Brother, Aphra Behn’s The Rover, and Rostand’s Cyrano.

Josh was the Education Director at Marin Shakespeare Company, and a faculty member at Cal Shakes, ACT, SF Shakes, UC Riverside, Cal State Long Beach, South Coast Rep, and the American Academy of Dramatic Arts.

Josh holds a BFA in Theatre from Boston University, and an MFA in Directing from the University of Washington, Seattle.