The head of SPI is appointed and responsible to the Director. Appointment of Head of Internal Audit should be conducted with the approval of Commissioner. SPI Head of PT TIMAH Tbk today is Muhammad Hatta since August 1, 2018, based on the Board of Directors Decree No. 1497/Tbk/SK-0000/18-S11.2. He was born in Semarang, November 11, 1968 and holds a Master's degree from IPMI. Muhammad Hatta started his career in PT TIMAH Tbk after achieving a Bachelor's degree at Sriwijaya University in 1993. Previous position held in the Company before becoming Head of Internal Supervisory Unit is Vice President of Bussiness Development and Commerce.