X0607 3 2026-03-18 0 0001896084 ioneer Ltd IONR 0001069173 CALAWAY JAMES D C/O IONEER LTD 9460 DOUBLE R. BLVD, SUITE 200 RENO NV 85921 true Ordinary Shares 7327763 D Ordinary Shares 56268106 I By Lithium Investors Americas LLC The reported Ordinary Shares are held by Lithium Investors Americas LLC, a private limited liability company of which the reporting person is the sole director. /s/ James D Calaway 2026-03-18