- CEO
- Hartono Limmantoro
- Full Time Employees
- 16
- Sector
- Process industries
- Industry
- Agricultural commodities/Milling
- Address
- Generali Tower Gran Rubina Business Park Jakarta Selatan Indonesia 12940
- IPO Date
- Aug 4, 2022
- Business
- PT Agung Menjangan Mas Tbk provides support services for aquaculture and shrimp farming in Indonesia, including pond preparation services such as land equalization, dredging, pool washing, and HDPE liner installation; pond maintenance and supervision during cultivation encompassing pH and mineral monitoring, temperature control, biological oxygen demand management, feeding, salinity regulation, and water maintenance; harvest services comprising molting prevention, netting, draining, and shrimp catching; post-harvest services including pool cleaning, drainage channel maintenance, and pond repairs; land and building rentals from its 50,000 square meter facility in Pejarakan Village, Buleleng Regency, Bali; and expanded aquaculture support for lobster, grouper, and barramundi since 2020. The company operates primarily in Indonesia with a focus on Southeast Asian shrimp farmers and targets aquaculture producers in regions including Bali, East Nusa Tenggara, West Nusa Tenggara, Sulawesi, and Sumatra. Founded in 2007 as PT Cosmopolitan Electric and headquartered at Generali Tower, Grand Rubina Business Park, 20th Floor C, Jl. H.R. Rasuna Said, Kuningan, South Jakarta, Indonesia, PT Agung Menjangan Mas Tbk functions as a subsidiary of PT Mandara Mas Semesta and listed on the Indonesia Stock Exchange in August 2022 under ticker AMMS.JK. In September 2025, Radiant Ruby Company Ltd initiated negotiations to acquire approximately 80% of the company's shares from PT Mandara Mas Semesta and controlling shareholder Hartono Limmantoro to support its Indonesian business expansion, with the process advancing to final stages including due diligence completion targeted for early December 2025 and mandatory tender offer in January 2026. Post-acquisition, the company plans strategic shifts into education, management consulting, and B2B training services alongside divestiture of its marine aquaculture business by third quarter 2026 while maintaining operational continuity during the transition.