Board of Directors
Mr. Siva Mahasandana
Position: Director
Age63 years
NationalityThai
Date of AppointmentApril 25, 2016
Education and Training
- Master of Business Administration in Finance and Investment, The George Washington University, United States
- Bachelor’s Degree in Mechanical Engineering, Chulalongkorn University
- Advanced Management Program, Harvard Business School, United States
- Certificate: Thai Institute of Directors (IOD)
- Director Certification Program (DCP), Class 206/2015
- Corporate Governance for Executive (CGE), 2015
- Role of the Chairman Program (RCP), 2018
- Senior Management Program, International Institute for Management Development (IMD), Switzerland, 2005
- Senior Leadership Program, International Institute for Management Development (IMD), Switzerland, 2007
- Top Executive Program, Thailand Energy Academy (TEA), Class 7/2015
Directorship Information
Period of Directorship
Holding Director Position from 2016 until present for a total of 9 years and 8 months
Shareholding in the Company as at December 31, 2025
None
Direct and indirect interest in any of business with Company and its subsidiaries
None
Family Relationship with Executives
None
Number of Director Positions in other Business
Listed Company – 2 Companies
- 2024-Present: Director, Thai Agro Energy Public Co., Ltd. (Subsidiary)/ Energy and Utilities
- 2016-Present: Director, Siam City Cement Public Co., Ltd. (Parent Company) / Manufacturer and Distributor of Cement and Construction Materials
Non-Listed Company – None
Past 5-Year Work Experience
2016-Jan 2023
Chief Executive Officer, Siam City Cement Public Co., Ltd.
2019-Jan 2023
Member of Group Executive Committee, Siam City Cement Public Co., Ltd.
2019-Nov. 2022
Chairman and Chief Executive Officer, Siam City Power Co., Ltd.
2017-Nov. 2022
Director, Siam City Concrete Co., Ltd.
2016-Nov. 2022
Director, Insee Digital Co., Ltd.
2017-Nov. 2022
Director, Siam City Cement (Vietnam) Limited (Registered in Vietnam)
2017-Nov. 2022
Director, Siam City Cement Trading Co., Ltd.
2019-Nov 2021
Chief Executive Officer, Globe Cement Co., Ltd.
2016-Nov 2021
Chairman, Globe Cement Co., Ltd.
2016-2020
Chairman, Insee Superblock Co., Ltd.
2015-2020
Chairman, PT. Conwood Indonesia Co., Ltd. (Registered in Indonesia)
2015-2020
President, Conwood Co., Ltd.
2016-2019
Chairman, Insee Ecocycle Co., Ltd.
2016-2019
Director, Siam City Cement (Lanka) Limited (Registered in Sri Lanka)
2015-2017
Chairman, Siam City Cement (Bangladesh) Limited (Registered in Bangladesh)
2015-2016
Chairman, Insee Digital Co., Ltd.
2015-2016
Chairman, Siam City Concrete Co., Ltd.
2012-2015
Deputy Chief Executive Officer and Senior Vice President (Marketing and Sales), Siam City Cement Public Co., Ltd.
2016-2019
Senior Vice President (Saraburi Operation), Siam City Cement Public Co., Ltd.