NIOX GROUP PLC

("NIOX" or the "Company")

Result of Annual General Meeting

NIOX Group plc (LSE: NIOX) announces that at its Annual General Meeting ("AGM") held this morning, all resolutions set out in the notice of the AGM dated 18 April 2023 were duly passed. Details of the voting results by resolution are now available under the Shareholder Documents section of the Company's website, www.investors.niox.com.

Contacts

NIOX

Ian Johnson, Executive Chairman                                                                Tel: +44 (0) 1865 405 560

Michael Roller, Chief Financial Officer

Singer Capital Markets (Nominated Adviser and Broker)

Aubrey Powell/ Jen Boorer                                                                          Tel: +44 (0) 20 7496 3000

About NIOX

Our ambition is to improve the quality of life of millions of people suffering from asthma. The company is engaged in the design, development and commercialisation of medical devices for the diagnosis and management of asthma. Today our device, NIOX VERO®, is used by healthcare professionals and leading research organisations. We passionately believe in empowering everyone to manage their health at home and are developing NIOX for home use to meet this need. At present, NIOX provides products and services in around 50 countries. For more information please visit www.niox.com.