December
On December 23, 1970, AHK "Met" Hamami established PT Trakindo Utama.
April
On April 13, 1971, PT Trakindo Utama officially became the sole agent for Caterpillar heavy equipment and machineries in Indonesia.
March
On March 10, 1977, PT Sanggar Sarana Baja was established to provide design and manufacture services for the heavy equipment industry.Trakindo and Caterpillar, Inc. established a joint venture company, PT Natra Raya, in the manufacture and assembly of heavy equipments.
March
On March 27, 1992, PT Sumberdaya Sewatama was established, as a Caterpillar generator sets rental provider.
August
On August 25, 1995, PT Trakindo Utama acquired PT Chandra Sakti Utama Leasing from Standard Chartered Bank, which became a subsidiary in financing services for Caterpillar equipment.
April
On April 8, 1997, PT Cipta Kridatama was established to provide heavy equipment rental services for the mining industry.
May
On May 9, 1997, PT Cipta Krida Bahari was established to engage in logistics services.
March
On March 2, 1999, PT Mitra Solusi Telematika was acquired from
PT GASI as a subsidiary providing information and technology services including information and business data center services.
Yayasan Nayakatama changed its name to Lembaga Mitratama.
February
On February 18, 2000, PT Chitra Paratama was established to be the sole dealer for Michelin earth mover tires.
August
On August 16, 2000, PT Tiara Marga Trakindo (TMT) was established as a holding company.
December
On December 1, 2000, PT Chakra Jawara was established as the dealer for IVECO dump trucks in Indonesia.
PT Trakindo Utama became one of the subsidiaries of TMT.
PT Cipta Krida Bahari introduced its new brand and company logo as CKB Logistics.
Lembaga Mitratama changed its name to Lembaga Bantuan Pendidikan (LBP) Mitratama. LBP Mitratama was established to provide an educational support program and scholarships for the children of TMT Group employes.
November
On November 28, 2006, PT Alfa Trans Raya was established as a shipping company primarily serving energy-related sectors, and purchased its first owned ship named Alfa Trans Satu in December 2006.
July
On July 30, 2007, the construction of Gedung TMT officially started. Gedung TMT was built as a ‘Green Building’ emphasizing energy conservation as well as a healthy internal and external environment.
December
In December 2007, PT Sumberdaya Sewatama and PT Sanggar Sarana Baja acquired five mining concessions, namely PT Tunas Inti Abadi, PT Aneka Cipta Prima, PT Dipta Iriana Sejahtera, PT Sinar Mega Prima, and PT Multi Cahaya Prima.
June
In June 2008, PT Tri Swardana Utama was established as a dealer of Mercedes-Benz heavy-duty trucks.
August
In August 2009, PT Tiara Marga Trakindo acquired PT Adiratna Bani Makmur and changed its name to PT ABM Investama, which then acquired majority shareholding in PT Sanggar Sarana Baja, PT Sumberdaya Sewatama, PT Cipta Krida Bahari, dan PT Tunas Inti Abadi through restructurization processes. PT ABM Investama also acquired minority shares in PT Cipta Kridatama.
PT Alfa Trans Raya launched its second owned ship, the Alfa Trans Dua with a capacity of 1,500 DWT.
PT ABM Investama became the majority shareholder of PT Cipta Kridatama.
November
On November 16, 2010, PT Reswara Minergi Hartama was established as the holding company for all coal-related business.
To support PT Tunas Inti Abadi's business activities and other coal trading activities, PT Reswara Minergi Hartama established a port company named PT Pelabuhan Buana Reja to serve the coal industry.
In November 2010, PT Sumberdaya Sewatama acquired minority shares in PT Metaepsi Pejebe Power Generation, a powerplant company operating in South Sumatra.
In November 2010, PT Mahadana Dasha Utama (MahaDasha) was established as a company focusing on the management of various TMT Group business portfolios. PT Mahadana Dasha Utama then acquired majority shareholding in PT Mitra Solusi Telematika, PT Chitra Paratama, PT Chakra Jawara, and PT Tri Swardana Utama.
December
In December 2010, PT Triyasa Propertindo (Triyasa) was established as a property company under the MahaDasha Group.
March
In March 2011, PT ABM Investama increased its share investment by converting Mandatory Convertible Bonds equivalent to 64.7111% shares of ABM Investama. This conversion was carried out by Valle Verde Ltd., a Singapore-based company owned by the Hamami family.
May
In May 2011, PT Sumberdaya Sewatama established two new subsidiaries, namely PT Nagata Bisma Shakti focusing on renewable energy and PT Pradipa Aryasatya focusing on thermal energy, in line with its expansion plan into independent/captive power plants.
In May 2011, PT Cipta Krida Bahari expanded its portfolio by establishing PT Baruna Dirga Dharma, a company that focuses on providing coal transportation and tug and barge services.
June
In June 2011, PT Sanggar Sarana Baja established PT Prima Wiguna Parama to manage equipment handling related to the energy industry.
In June 2011, PT Reswara Minergi Hartama acquired PT Media Djaya Bersama, which operates 2 coal concessions in Aceh, namely
PT MIFA Bersaudara and PT Bara Energi Lestari.
July
In July 2011, Triyasa established two new subsidiaries, namely PT Aruna Kirana and PT Madara Swarna which focus on commercial office building construction.
September
In September 2011, PT Sanggar Sarana Baja introduced its new company brand and logo.
December
In December 2011, PT Chandra Sakti Utama Leasing introduced its new company brand and logo, CSUL finance. This logo reflects continuity and activity. Two wings were added to the logo with the objective of breathing soul into the company's logo.
In December 2011, Triyasa established a new subsidiary, namely PT Wiyasa Persada, which focuses on residential development.
On December 6, 2011, PT ABM Investama officially carried out its initial public offering and listed on the Indonesian Stock under the ticker code ABMM.
TMT acquired the shares of PT HD Finance Tbk. Currently TMT owns 55% of PT HD Finance Tbk.'s shares, which makes TMT the controlling shareholder.
April
In April 2013, MahaDasha established a new subsidiary, namely PT Mega Mahadana Hadiya (Mahadya), as a company that engages in the consumer retail segment. Currently, Mahadya operates the Carl's Jr. hamburger and Wingstop franchise. Mahadya is also starting to explore other retail businesses by partnering with other renowned global F&B franchisees and launching a network of supermarkets in the near future.
May
In May 2013, MahaDasha established a new subsidiary, namely PT Halla Mohana, as an operator of hotels and shopping malls as business and lifestyle centers.
PT Chitra Paratama, PT Mitra Solusi Telematika, and PT Tiara Marga Trakindo introduced their new company brands and logos.
June
In June 2013, PT ABM Investama Tbk. officially becames an operating holding company.
November
In November 2013, Triyasa established PT Pastika Nirmala, a new subsidiary company focused on high-rise residential developments.
During the 2014 Annual General Meeting of Shareholders, PT HD Finance Tbk. plans to change its name to PT Radana Bhaskara Finance Tbk. (Radana Finance).
