Atlantic Lithium PLC has promoted Neil Herbert to executive chairman from his role as non-exec chair previously.
Stuart Crow will now become senior non-executive director having already been on the board in a non-exec role.
Herbert said: "The company is at a critical stage of its transition from explorer to developer and producer.
“These changes complete the strengthening of our executive team and board as we go into the next stage of development of the company and accelerate our fully funded Ghana lithium project to production.”
Atlantic also announced options would be issued to Herbert, Crow and finance director Amanda Harsas.
“We therefore believe it is important to appropriately incentivise our Board to ensure continuity and align the Board with growing shareholder value through the development of West Africa's first lithium mine," Herbert added.