Directorate Change

September 4, 2020

Indivior PLC - Board Announcement

Indivior PLC announces that the Chair of the Board, Howard Pien, who has been on a medical leave since June 15, 2020, has notified the Board of his resignation with immediate effect.

Daniel Tassé, who was appointed as Interim Chair in Mr Pien's absence, will continue to act as Interim Chair until the Board appoints Mr Pien's successor. The Board will commence a process to identify a successor.

Mr Tasse joined the Board in 2014 and was appointed Senior Independent Director in 2016 (bio). He is a member of the Audit and Remuneration Committees.

Investor Contact:

Jason Thompson, IndiviorVice President, Investor Relations+1 804-402-7123Jason.Thompson@indivior.com

Media Contacts:

UKTulchan Communications+44 207-353-4200

USIndiviorMediaContacts@indivior.com+1 804-594-0836