Una has premiered in Telluride to good reviews
From the reviews we find out that Tobias plays Ben Mendelsohn's boss Mark in this drama about a woman (Rooney Mara) who confront the man (Mendelsohn) who molested (sorry, I refuse to use "seduced") her when she was thirteen.
No idea how much screen time Tobias has but my guess is not much, as his character was not in the play the film is based on and is only mentioned briefly in two reviews. For all I know, it may be a minor supporting role or even a cameo like Tobias did in another film with Ben, Black Sea.
I am a Cat-aholic, cats are my religion.