PT. Gunung Raja Paksi Tbk

Mrs. Siti Humayah

President Director

Mrs. Siti Humayah was appointed as President Director of PT Gunung Raja Paksi Tbk (GRP) at the Annual General Meeting of Shareholders held on June 30, 2025. She brings over three decades of experience in finance, accounting, and executive leadership within the steel industry.

From 1990 to 2020, she held various senior leadership roles across the Gunung Steel Group, including as General Manager and later Finance Director at PT Gunung Garuda, PT Gunung Raja Paksi, and PT Gunung Gahapi Bahara. Between 2012 and 2020, she also served as Director of PT Gunung Balaraja and PT Gunung Balaraja Dua, contributing to the operational growth and financial stewardship of the group.

Mrs. Siti Humayah holds a Bachelor’s degree in Economics from STIE Adhy Niaga, Bekasi, and a Diploma in Banking from Akademi Bank Indonesia, Jakarta. Her extensive background in finance and industry leadership positions her to drive GRP’s continued performance and strategic direction.

.

Mr. Agustinus Ambar Kuntjoro

Director

Mr. Agustinus Ambar Kuntjoro was appointed as Director of PT Gunung Raja Paksi Tbk (GRP) at the Annual General Meeting of Shareholders held on June 30, 2025. With over 30 years of experience in human capital development, organizational transformation, and operational leadership, he brings a deep understanding of workforce strategy and corporate infrastructure.

He previously served as Director of Human Capital Development at GRP and General Manager of HCD at Gunung Steel Group, where he led key initiatives in recruitment, compensation, industrial relations, and asset management. His earlier leadership roles within the Astra Group, including PT Astra Otoparts and PT FSCM Manufacturing Indonesia, further strengthened his expertise in performance management, organizational development, and strategic HR planning.

Mr. Ambar holds a Bachelor of Law degree from Universitas Brawijaya, Malang, and has completed various executive training programs under Astra Management Development Institute.

Mr. Harianto

Director

Mr. Harianto was appointed as Director of PT Gunung Raja Paksi Tbk (GRP) at the Annual General Meeting of Shareholders on June 30, 2025. With a solid background in finance and treasury management, he has held various strategic roles within the Gunung Steel Group since 2015.

He previously served as Treasury Operational Manager and Treasury Bank Relation Senior Manager at GRP, and has also held leadership positions as Director and President Commissioner at several group entities, including PT Gunung Garuda and PT Gunung Baja Konstruksi. His expertise spans corporate finance, banking relations, and capital structure optimization.

Mr. Harianto holds a Master’s degree in Technology, Business, and Management from President University and a Bachelor's degree in Economics from Universitas Setia Budi Mandiri. His financial acumen and leadership contribute to GRP’s ongoing growth and strategic execution.

Mr. Ivan Widjaksono

Director

Mr. Ivan Widjaksono was appointed as Director of PT Gunung Raja Paksi Tbk (GRP) at the Annual General Meeting of Shareholders on June 30, 2025. He brings over 15 years of experience in information technology, digital transformation, and enterprise systems.

Before his appointment, he served as Deputy Technology (Head of IT) at GRP, leading major initiatives such as the implementation of SAP S/4HANA, data analytics platforms, and automation systems. His leadership has played a pivotal role in transforming GRP’s operations to become more data-driven and efficient. Prior to joining GRP, he held senior roles at SMU Healthcare and PT Asia Global Solution Indonesia, focusing on ERP implementation and business process improvement.

Mr. Ivan holds a Master’s degree in Financial Management from Tarumanagara University and a Bachelor’s degree in Computer Science from Bina Nusantara University.