![Arief Widyaman Sidarto](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Vermögen: 22 Mio $ am 30.09.2026
Arief Widyaman Sidarto currently works at PT Amman Mineral Nusa Tenggara, as Director from 2017, PT Amman Mineral Internasional Tbk, as President Director, SM Investments Pte Ltd., as Director, Slate Alt Pte Ltd., as Director, and Macmahon Holdings Ltd., as Non-Independent Non-Executive Director from 2026.
Mr. Sidarto also formerly worked at Macmahon Holdings Ltd., as Non-Independent Non-Executive Director from 2017 to 2023, PT Rajawali Corp., as Managing Director & Director, and Wellspring Capital Partners Pte Ltd., as Managing Director from 2010 to 2014.
Mr. Sidarto received his undergraduate degree from The Wharton School of the University of Pennsylvania and Masters Business Admin degree from Harvard Business School.
| Unternehmen | Datum | Anzahl der Aktien | Bewertung | Datum der Bewertung |
|---|---|---|---|---|
| 31.12.2025 | 79’056’600 ( 0.11% ) | 20 Mio $ | 30.09.2026 | |
| 13.07.2026 | 2’619’447 ( 0.12% ) | 2 Mio $ | 30.09.2026 |
| Unternehmen | Position | Beginn |
|---|---|---|
| PT AMMAN MINERAL INTERNASIONAL TBK | Vorstandsvorsitzender | - |
| MACMAHON HOLDINGS LIMITED | Direktor/Vorstandsmitglied | 29.04.2026 |
PT Amman Mineral Nusa Tenggara
 PT Amman Mineral Nusa Tenggara Other Metals/MineralsNon-Energy Minerals Mines for copper and gold ores | Corporate Officer/Principal | 01.04.2017 |
SM Investments Pte Ltd.
 SM Investments Pte Ltd. Investment ManagersFinance A join venture led by Salim Group and PT Medco Energi Internasional Tbk | Direktor/Vorstandsmitglied | - |
Slate Alt Pte Ltd.
 Slate Alt Pte Ltd. Packaged SoftwareTechnology Services Develops slate tool platform | Direktor/Vorstandsmitglied | - |
| Unternehmen | Position | Ende |
|---|---|---|
| MACMAHON HOLDINGS LIMITED | Direktor/Vorstandsmitglied | 13.07.2023 |
Wellspring Capital Partners Pte Ltd. | Vorstandsvorsitzender | 01.01.2014 |
PT Rajawali Corp.
 PT Rajawali Corp. Specialty TelecommunicationsCommunications Operates as an investment holding company with interests in telecommunications, property, hotel management, and mining industries | Vorstandsvorsitzender | - |
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| Private Unternehmen | 9 |
|---|---|
Macmahon Holdings Ltd.
 Macmahon Holdings Ltd. CoalEnergy Minerals Provides mining, civil construction and engineering services | Energy Minerals |
PT Rajawali Corp.
PT Rajawali Corp. Specialty TelecommunicationsCommunications Operates as an investment holding company with interests in telecommunications, property, hotel management, and mining industries | Communications |
PT Amman Mineral Nusa Tenggara
PT Amman Mineral Nusa Tenggara Other Metals/MineralsNon-Energy Minerals Mines for copper and gold ores | Non-Energy Minerals |
The Wharton School of the University of Pennsylvania
 The Wharton School of the University of Pennsylvania Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Harvard Business School
 Harvard Business School Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
PT Amman Mineral Internasional Tbk
 PT Amman Mineral Internasional Tbk Precious MetalsNon-Energy Minerals Provides gold and copper mining services | Non-Energy Minerals |
Wellspring Capital Partners Pte Ltd. | |
SM Investments Pte Ltd.
SM Investments Pte Ltd. Investment ManagersFinance A join venture led by Salim Group and PT Medco Energi Internasional Tbk | Finance |
Slate Alt Pte Ltd.
Slate Alt Pte Ltd. Packaged SoftwareTechnology Services Develops slate tool platform | Technology Services |
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