Mr. Vanchai Tosomboon

Positions: Chairman of the Board, Authorized Director and Nomination and Remuneration Committee Member
Age: 74 years
Nationality: Thai
• Master in Business Management, Asian Institute of Management
• Bachelor of Law, Thammasat University
• Certificate: Thai Institute of Directors Association
    Director Certification Program (DCP) Class 7/2001
    Director Accreditation Program (DAP) Class 7/2004
    Advanced Audit Committee Program (AACP) Class 19/2015
    Corporate Governance for Capital Market Intermediaries (CGI) Class 10/2015
    Board Nomination and Compensation Program (BNCP) Class 9/2020
    Role of the Chairman Program (RCP) Class 52/2022
• Certificate: Managing Corporate Resources
    Institute of Management Development (IMD), Switzerland, 2000
• Certificate: Breakthrough Program for Senior Executives
    Institute of Management Development (IMD), Switzerland, 2002
• Certificate: Senior Management Program
    Institute of Management Development (IMD), Switzerland, 2006
Date of Appointment: April 21, 1999
Period of Directorship: Holding Director Position since 1999 until present for a total of 24 years and 8 months.
Shareholding in the Company as at December 31, 2023: 760,000 shares or 0.145 percent of all shares with voting rights
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 – 1 Company
    2014-Present: Director of Nomination and Compensation Committee, Siam City Cement Public Co., Ltd. / Cement Producer and Construction Materials
    2004-Present: Director
• Non-Listed Company: None
Past 5-Year Work Experience:
    2015-Apr. 2023: Director, Chip Mong Insee Cement Corporation Limited (Registered in Cambodia)
    2014-Sep. 2023: Independent Director and Audut Committee Member, Krungsri Securities Public Co., Ltd.
    2012-2021: Consultant, Siam City Cement Public Co., Ltd.
    2014-2020: Director of Governance, Risk and Compliance Committee, Siam City Cement Public Co., Ltd.
    2017-2019: Director, Siam City Cement (Vietnam) Limited (Registered in Vietnam)
    2016-2019: Director, Siam City Cement (Lanka) Limited (Registered in Sri Lanka)
    2004-2011: Director and Executive Vice President (Saraburi Operation), Siam City Cement Public Co., Ltd.
    2002-2016: Director, Conwood Co., Ltd.
    2004-2005: Chairman of the Board, Karat Faucet Co., Ltd.
    1999-2005: Managing Director and Chairman of Executive Board, Royal Porcelain Public Co., Ltd.
    1999-2004: Managing Director, Diamond Roofing Tiles Public Co., Ltd.

Scroll to Top