In the biographical drama film Steve Jobs, Katherine Waterston portrays Chrisann Brennan, the ex-girlfriend of Apple co-founder Steve Jobs (played by Michael Fassbender). Directed by Danny Boyle, the film follows Jobs' life and career through three key product launches. Waterston's character, Chrisann, provides a glimpse into Jobs' personal life and the challenges he faced in his relationships. Steve Jobs is a thought-provoking film that delves into the complexities of genius, ambition, and the impact of technology on our lives.