Any blu-ray in this will be region b.  4K discs are region free. 

Director: Brandon Cronenberg

Starring: Andrea Riseborough, Christopher Abbott, Sean Bean

An elite corporate assassin takes control of other people's bodies using brain-implant technology to execute high-profile targets. With each hit comes a stronger lust for blood, throwing the whole operation into jeopardy.

Special Features 

• Dual format edition including both UHD and Blu-ray with main feature and bonus features on both discs
• UHD presented in Dolby Vision HDR approved by Director Brandon Cronenberg and Director of Photography Karim Hussain
• New audio commentary by Brandon Cronenberg, Producer Rob Cotterill, Karim Hussain and Special Effects Artist Dan Martin
• This Unfamiliar Life: a new interview with Brandon Cronenberg
• Inside the Machine: a new interview with Karim Hussain
• Feel the Real: a new interview with Rob Cotterill
• Disassociating from Mind and Body: Zoë Rose Smith on Possessor
• Camera Test Footage
• FX Show and Tell with Dan Martin
• Archive featurette: A Heightened World - A Look at Possessor
• Archive featurette: Identity Crisis - Bringing Possessor to Life
• Archive featurette: The Joy of Practical - The Effects of Possessor
• Deleted Scenes
• Short Film: Please Speak Continuously and Describe Your Experiences as They Come to You
• Trailer

Limited Edition Contents

• Rigid slipcase with new artwork by Marko Manev
• 120-page book featuring extensive behind the scenes gallery, script-to-screen comparisons, new essays by Stacey Abbott, Anton Bitel, Jon Towlson and Heather Wixson
• 6 collectors' art cards