I've only been able to find the "featurette" of Ex Machina (2015). Is the movie available on TPB?
Not yet, and there are no copies on kat either.
I'm sure CAM copies will appear soon enough, but if it's quality you're after, the film is released on both DVD and BluRay format sometime in
August
Amazon though, are releasing BluRay copies from
1st June, so there's a chance you'll be able to download a decent copy sometime withing the next 2-3 weeks.
As soon as it appears on TPB, one of the many members who help out in the request forums will undoubtedly post a torrent link here for you.