RTNXF Renalytix PLC (PK)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Date of report: September 21, 2020

Commission File Number: 001-39387

Renalytix AI plc

(Translation of registrant’s name into English)

Avon House

19 Stanwell Road

Penarth

Cardiff CF64 2EZ

United Kingdom

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

☒  Form 20-F             ☐  Form 40-F

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):  ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):  ☐

INFORMATION CONTAINED IN THIS REPORT ON FORM 6-K

On September 18, 2020, Renalytix AI plc issued a press release announcing the commercial launch of KidneyIntelX, which is furnished as Exhibit 99.1 to this Report on Form 6-K.

EXHIBIT INDEX