5E Advanced Materials, Inc. is a holding company. It is an exploration stage company. The Company is engaged in acquiring and developing mineral properties that may contain recoverable deposits of boron in the form of boric acid (H3BO3), lithium in the form of lithium carbonate (LiCO3) and potential by-products of sulphate of potash (K2SO4), gypsum and hydrochloric acid (HCl). The Company owns a project through its subsidiary, Fort Cady (California) Corporation (FCCC). The Project is a colemanite borate deposit and is a global deposit of colemanite. The deposit hosts a mineral resource where borate specialty materials, boric acid, lithium carbonate and SOP by-product can potentially be produced for the global market. The Company's subsidiaries include American Pacific Borates Limited, Fort Cady Holdings Pty Ltd and Fort Cady (California) Corporation.