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Team Members

Hanter Oriko Siregar, S.H.
Managing Partner
Hanter Oriko Siregar is an Advocate and Managing Partner with experience in complex litigation, corporate matters, employment disputes, and constitutional law. He advises clients on strategic legal issues and represents them in various judicial and dispute resolution proceedings throughout Indonesia.

Muara Simbolon, S.H.
Senior Associate
Muara Simbolon is a Senior Associate of the firm with experience in litigation, corporate law, employment disputes, land matters, and regulatory issues. He is recognized for his practical legal approach, strong advocacy, and commitment to delivering effective solutions for clients.

Andhy Suranta Sembiring, S.H.
Partner
Andhy Suranta Sembiring is an Advocate and Legal Consultant with experience in litigation, corporate advisory, employment law, and dispute resolution. He is committed to delivering practical, strategic, and client-focused legal solutions with professionalism and integrity.

Horison Sibarani, S.H., M.H.
Senior Lawyer
Bella is a Legal Staff who supports the firm's legal operations through case management, legal documentation, research assistance, and administrative coordination. She is committed to ensuring efficiency, accuracy, and professionalism in every aspect of the firm's legal services.

Togap Sitorus, S.H.
Partner
Togap Sitorus is a Partner of the firm whose practice focuses on complex litigation, land and property law, employment disputes, bankruptcy and restructuring, and regulatory matters. He is known for providing strategic legal counsel and effective representation to corporations, institutions, and private clients in high-stakes legal matters.

Gendis Grasela, S.H.
Associate
Gendis Grasela is an Associate whose practice focuses on litigation support, corporate advisory, legal research, and dispute resolution. She is committed to providing meticulous legal analysis and practical solutions that help clients address legal challenges effectively and confidently.
Speak with an Attorney
At H'OS LAW FIRM, we are committed to providing practical, strategic, and effective legal solutions tailored to our clients’ needs. Whether you are an individual, business, or institution seeking legal assistance, our lawyers are ready to provide professional guidance and representation.
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Contact us today to schedule a confidential consultation and learn how we can help protect your interests and achieve your legal objectives.

Office Hours
Mon - Fri
Saturday
​Sunday
9:00 WIB – 17:00 WIB
9:00 WIB – 17:00 WIB
9:00 WIB – 16:00 WIB