Mountainhead Cast List and Who They Play

Nivedita Dubey
May 29, 2025

Key Points:

Jesse Armstrong’s directorial debut arrives with Mountainhead, a sharp satire on tech billionaires.
Steve Carell, Jason Schwartzman, Ramy Youssef, and Cory Michael Smith lead a star-studded cast.
Streaming from May 31 on HBO Max in the US and June 1 on Sky/NOW in the UK.

Mountainhead, the upcoming HBO original movie from Succession creator Jesse Armstrong, delivers a sharp comedic take on the world of tech billionaires amid a global financial meltdown. With a powerhouse cast and a single-location setup in Park City, Utah, the film promises biting satire, smart dialogue, and timely themes. Here’s a complete breakdown of what to expect.

What Is Mountainhead About?

Mountainhead is a satirical comedy-drama that explores the toxic inner circle of tech billionaires. Set during a snow-covered retreat at an alpine chalet, the film focuses on four ultra-rich friends grappling with their personal quirks while a financial crisis brews outside their luxury cocoon.

Plot Premise:
A group of tech billionaires retreats to a remote mountain lodge, oblivious to a fast-escalating economic collapse back home. As tensions rise and their egos clash, their wealth and privilege get tested against a crumbling reality they can no longer ignore.

With a runtime of approximately 1 hour and 48 minutes, the film delivers its message through dense, dialogue-heavy scenes, reminiscent of Armstrong’s work on Succession.

Who Stars in Mountainhead? Full Cast & Character Guide

One of the major draws of Mountainhead is its A-list ensemble, featuring veteran comedians and rising stars. Here’s a look at the confirmed cast and their roles:

Actor	Character Name	Role Description
Steve Carell	Randall	Arrogant and self-assured billionaire, likely the group’s de facto leader.
Jason Schwartzman	Souper / Hugo Van Yalk	Quirky mogul, possibly dual identity hints at complex character arc.
Cory Michael Smith	Venis	Reserved and introspective, serves as a stabilizing force or wildcard.
Ramy Youssef	Jeff	The idealist and comic relief, possibly younger or more grounded than others.
Daniel Oreskes	Dr. Phipps	Likely an external advisor, doctor, or therapist for the group.
David W. Thompson	Leo	Possibly a staff member or assistant, minor but pivotal to unfolding events.
Hadley Robinson	Character not listed	Supporting role—could be family, partner, or guest linked to a billionaire.
Andy Daly	Character not listed	May portray a business associate or comedic side character.
Ali Kinkade	Character not listed	Minor role—likely lodge staff or social peer.
Amie MacKenzie	Character not listed	Supporting role with minimal disclosed details.
Ava Kostia	Character not listed	Possibly background role, limited information available.

Casting Highlights:

Steve Carell returns to dramatic comedy after The Office, bringing bite and wit to Randall.
Jason Schwartzman adds Wes Anderson-style eccentricity to the story.
Ramy Youssef provides raw humor and relatability in contrast to elite excess.
Cory Michael Smith, as Venis, balances out the satire with controlled intensity.

Where and When Was Mountainhead Filmed?

Filming for Mountainhead took place in March 2025 in Park City, Utah, a location synonymous with snowbound exclusivity and indie film culture (Sundance Film Festival, notably).

Filming Facts:

Primary location: A secluded mountain chalet.
Shooting duration: Approximately 5 weeks.
Style: Single-location setup adds claustrophobia and intensity to the unfolding drama.
Filming wrapped rapidly and entered post-production ahead of the May 2025 release.

The choice of a singular, isolated setting not only intensifies character conflict but also mirrors the emotional detachment of billionaires from real-world struggles—a clever production choice by Armstrong.