Our Officers


    • Chairman and Chief Executive Officer

      Herminio S. Esguerra

      Chairman and CEO

      Mr. Herminio S. Esguerra is owner, founder, Chairman of the Board, and Chief Executive Officer of six other companies that include petroleum shipping and trading, waste management, and horse breeding, within The Herma Group.

      Armed with a strong vision and an untiring entrepreneurial spirit, Mr. Esguerra steered a one-barge bunkering operation into a group of companies that is now a name in petroleum, maritime, and environmental services. He continues to chart new courses, particularly in environmental care and protection, and has distinguished himself for his involvement in the society and nation-building. Today, after two decades, he is still very active in top management, and is a charismatic coach preparing his people well in the management of their sectors.

    • Vice President

      Mark Glenn D. Millan

      Chief Operating Officer

      Mr. Mark Glenn D. Millan rendered 20 years of dedicated service in the military as a Naval Officer in the Philippine Navy with a rank of Lieutenant Commander. He handled various operational and administrative functions aboard ships and in various offices of the Philippine Navy, Armed Forces of the Philippines, and the Department of National Defense. Prior to joining HSI, Mark was the Assistant Secretary of the Department of National Defense and contributed in improving departmental and bureau-level policies and systems. He is a systems-man who brings to the Administration of HSI his rich educational background and experience.

  • Commercial Division Manager

    Manuelito C. Sianghio

    Division Manager – Commercial

    Mr. Manuelito C. Sianghio was born into a family that operates a shipyard and thus had an early start in what would become his career. He graduated from the Far Eastern University, Bachelor of Science in Business Administration, major in Marketing. Upon graduation, he joined his family’s business as Commercial Manager, handling marketing, billing, and repair operations.

    Mr. Sianghio joined HSI in 2007 as Ship Repair Manager. Today, he is Manager of the Commercial Division, primarily handling marketing, and coordinating interfaces with project planning, estimating, and operations.