(2011 - 2012) Zach was in the original Broadway cast of "War Horse" at Lincoln Center Theater, as Sgt. Fine.
(2014) Played Demetrius in Julie Taymor's critically acclaimed stage production of A Midsummer Night's Dream Off-Broadway at Theatre for a New Audience.
(2013) Played the title role in Shakespeare's Henry V at Folger Theatre in Washington, DC, which became their best selling production of all time.
(2014) Played the title role in Hamlet at Hartford Stage.