![Mongkol Simaroj](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>)
Mongkol Simaroj
Chairman at
SUSCO
Net worth: 10 M $ as of 2026-05-30
Profile
Mongkol Simaroj currently works at SUSCO Public Co. Ltd., as Chairman from 1993, Siam Mongkol Oil Co. Ltd., as Chairman from 1990, Siri Charoen Wattana Co. Ltd., as Chairman from 2011, and SINOPEC SUSCO Co., Ltd., as Chairman from 2012.
Mr. Simaroj received his graduate degree from Michigan State University and undergraduate degree from the University of Chulalongkorn.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2025-09-10 | 160,100,000 ( 16.01% ) | 10 M $ | 2026-05-30 |
Mongkol Simaroj active positions
| Companies | Position | Start |
|---|---|---|
| SUSCO | Chairman | 1992-12-31 |
SINOPEC SUSCO Co., Ltd.
 SINOPEC SUSCO Co., Ltd. Specialty StoresRetail Trade Operates fuel retail stations | Chairman | 2011-12-31 |
Siri Charoen Wattana Co. Ltd.
 Siri Charoen Wattana Co. Ltd. Financial ConglomeratesFinance Development stage company that holds leasehold contracts to several pieces of land | Chairman | 2010-12-31 |
Siam Mongkol Oil Co. Ltd. | Chairman | 1989-12-31 |
Training of Mongkol Simaroj
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
17
1st degree connections
6
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 6 |
|---|---|
Michigan State University
 Michigan State University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
SUSCO Public Co. Ltd.
 SUSCO Public Co. Ltd. Specialty StoresRetail Trade Distributes gasoline, diesel oil, gasohol and lubricant products | Retail Trade |
University of Chulalongkorn
 University of Chulalongkorn Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Siam Mongkol Oil Co. Ltd. | |
Siri Charoen Wattana Co. Ltd.
Siri Charoen Wattana Co. Ltd. Financial ConglomeratesFinance Development stage company that holds leasehold contracts to several pieces of land | Finance |
SINOPEC SUSCO Co., Ltd.
SINOPEC SUSCO Co., Ltd. Specialty StoresRetail Trade Operates fuel retail stations | Retail Trade |
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