Issue of Shares

LONDON and SALT LAKE CITY, March 7, 2023 -- Renalytix plc (NASDAQ: RNLX) (LSE: RENX) announces that under the Company's Employee Share Purchase Plan (the "ESPP"), 166,674 new ordinary shares of £0.0025 each in the capital of the Company (the "Ordinary Shares") have been issued to settle the purchase of 83,337 American Depositary Shares, each representing two Ordinary Shares, by employees who participated in the ESPP. This was carried out at a subscription price of $1.7425 per American Depositary Share (£0.73 per Ordinary Share). Details in relation to the ESPP were contained in the Company's announcement of 2 September 2020.

An application has been made to the London Stock Exchange for the new Ordinary Shares to be admitted to trading on AIM. It is expected that admission of the 166,674 new Ordinary Shares to trading on AIM will become effective on, or around, 8am UK time on 10 March 2023 ("Admission"). The new Ordinary Shares will rank pari passu with the existing Ordinary Shares of the Company.

Total voting rights

Following Admission, the Company will have 93,781,478 Ordinary Shares in issue with each share carrying the right to one vote. The Company has no Ordinary Shares held in treasury. The total number of voting rights in the Company following Admission will therefore be 93,781,478.

For further information, please contact:

About Kidney Disease

Kidney disease is a public health epidemic affecting over 850 million people globally.¹ The Centers for Disease Control and Prevention estimates that 15% of U.S. adults, or approximately 37 million people², have chronic kidney disease (CKD). Nearly 95% of people with CKD are in early stages 1-3³. Despite its magnitude, early-stage (1-3) CKD is underdiagnosed and undertreated, largely because it's asymptomatic at this time in the disease. As many as 9 in 10 adults with CKD, and about 2 in 5 adults with severe CKD do not know they have the condition.³

About Renalytix

Renalytix (NASDAQ: RNLX) (LSE: RENX) is an in-vitro diagnostics and laboratory services company that is the global founder and leader in the new field of bioprognosis™ for kidney health. The leadership team, with a combined 200+ years of healthcare and in-vitro diagnostic experience, has designed its KidneyIntelX laboratory developed test to enable risk assessment for rapid progressive decline in kidney function in adult patients with T2D and early CKD (stages 1-3). We believe that by understanding how disease will progress, patients and providers can take action early to improve outcomes and reduce overall health system costs. For more information, visit www.renalytix.com.

About KidneyIntelX™

KidneyIntelX™ is a laboratory developed test demonstrated to be a reliable, bioprognostic™ methodology that yields a simple-to-understand, custom risk score, enabling prediction of which adult patients with T2D and early CKD (stages 1-3) are at low, intermediate or high risk for rapid progressive decline in kidney function. By combining information from KidneyIntelX with newer cardio- and reno-protective therapies, doctors will have more information in determining which patients are at higher versus lower risk for rapid disease progression and may be able to more appropriately target resources and guideline-recommended treatments to advance kidney health. KidneyIntelX is supported by a growing body of clinical, utility and health economic studies (including a validation study of two large cohorts) and has demonstrated a 72% improvement in predicting those patients who are at high risk for rapid progressive decline in kidney function versus the current standard of care (eGFR and UACR). KidneyIntelX has received Breakthrough Device Designation from the U.S. Food and Drug Administration, and Renalytix has submitted for De Novo marketing authorization. To learn more about KidneyIntelX and review the evidence, visit www.kidneyintelx.com.

Sources

1 https://www.theisn.org/blog/2020/11/27/more-than-850-million-worldwide-have-some-form-of-kidney-disease-help-raise-awareness/
2 https://www.cdc.gov/kidneydisease/publications-resources/ckd-national-facts.html
3 https://www.cdc.gov/kidneydisease/basics.html