Lee will step down from his teaching role at Yale later this year.
The former Steppenwolf ensemble member will step down from the Geffen’s helm after 17 years.
The longtime artistic director will leave STC at the end of the 2019 season.
Originally hired in 2004, Isherwood had outsized influence and aroused passionate feelings, occasionally his own.
The longtime leader will step down at the end of the company’s 50th anniversary season.
Artistic director Elysabeth Kleinhans and executive producer Peter Tear will leave their posts in May. Val Day will be the new artistic director.
Clausen brings his experience in marketing, music, and theatre to the role.
The company’s resident stage manager has stepped into the new leadership role.
The performer and arts activist will help to plan the theatre’s 2017 programming.
Sag brings his experience in general management to the new role.