Indivior to Announce Q1 2022 Results and Host Webcast on April 28^th

Slough, UK, and Richmond, VA, April 7, 2022 - Indivior PLC (LON: INDV) today announced that it will release its Q1 2022 results on April 28^th at 12:00 GMT (7:00 a.m. U.S. Eastern). The results will be available via the London Stock Exchange's Regulatory News Service (RNS) and on the "Investors" section of the company's website at www.indivior.com.

Mark Crossley, Chief Executive Officer, and other members of Indivior's leadership team will host a presentation via live webcast at 13:00 GMT (8:00 a.m. U.S. Eastern) on April 28^th.

Access to the Live Webcast Presentation

The webcast event and materials can be accessed on the "Investors" section of the company's website at www.indivior.com before the event begins.

The webcast link is https://edge.media-server.com/mmc/p/ogy6nn93.

Participants may access the presentation telephonically:

·    US participants 1-646-741-3167

·    International participants +44 (0) 2071-928338

Please reference confirmation ID 6687840. A replay of the presentation will be available at www.indivior.com.

About Indivior

Indivior is a global pharmaceutical company working to help change patients' lives by developing medicines to treat substance use disorders (SUD) and serious mental illnesses. Our vision is that all patients around the world will have access to evidence-based treatment for the chronic conditions and co-occurring disorders of SUD. Indivior is dedicated to transforming SUD from a global human crisis to a recognized and treated chronic disease. Building on its global portfolio of OUD treatments, Indivior has a pipeline of product candidates designed to both expand on its heritage in this category and potentially address other chronic conditions and co-occurring disorders of SUD, including alcohol use disorder and cannabis use disorder. Headquartered in the United States in Richmond, VA, Indivior employs more than 900 individuals globally and its portfolio of products is available in over 40 countries worldwide. Visit www.indivior.com to learn more. Connect with Indivior on LinkedIn by visiting www.linkedin.com/company/indivior.

Contact:

Jason Thompson

Vice President, Investor Relations

Tel: 804-402-7123 or jason.thompson@indivior.com

Tim Owens

Director, Investor Relations

Tel: 804-263-3978 or timothy.owens@indivior.com

###