Mack builds precise new musicals and genre-defying theatre work about misfits and miracles. Transsexuality and the disciplined practice of hope are core tenets of their work in both form and content. They are especially steady when building ambitious theatre with ambitious artists and honestly? They love to herd cats.

With a signature joyful rigor, they have developed work with Ars Nova, Roundabout Theatre Company, New York Theatre Workshop, MCC, 24 Hour Plays, Hermitage Artist Retreat, and Fault Line Theatre. They are an Ars Nova Artist in Residence for the 2025-’26 season along with their collaborators Murphy Taylor Smith and Emerson Mae Smith. They were the Roundabout Directing Fellow for RTC’s 2022-23 season, and currently work as Lead Facilitator of the Roundabout Directors Group. Mack has been an associate and assistant director on and off Broadway to directors including Bartlett Sher, Trip Cullman, Jess McLeod, Connor Gallagher, and David Mendizábal. They are a recipient of the 2025 SDCF Abe Burrows Award for Assistant Directors.

Mack is a current NYU Tisch Drama Gender Expansive Mentor, an NYCLU Artist Ambassador, and works at Convergence Magazine with grassroots organizers and activists to produce media that sharpens our collective practice.

Most summers, Mack serves as an Associate Artistic Director to the students at The Summer School for the Performing Arts . They have spent 21 summers with the Massachusetts program, and their Boston accent always comes back.