Our Leadership

Mr. Prida Tiasuwan


Age 74 Years


Chairman of Advisory Board (Appointed 21 April 2022)


  • Higher National Diploma in Business Studies – Thames Valley University, England
  • Distinguished Senior Executive Program in Government and Business at Harvard University, U.S.A.
  • Honorary Doctorate of Arts Management, South East Bangkok University, Thailand

Training attended with regard to roles and responsibilities of corporate directors

Director Accreditation Program (DAP), Class 37/2005 Thai Institute of Directors (IOD)

Work Experience

  • Director and Vice President of Thai Gem and Jewelry Traders Association
  • Director of Listed and Authorized Companies Association
  • Director of Thailand-US Business Council
  • Director of The Thai Chamber of Commerce
  • Director and President of Social Venture Network Asia (Thailand)
  • Director and Vice Chairman of International Colored Stone Association (ICA)
  • Commissioner Law Reform Commission of Thailand
    • Sub Committee Chairman of Low Reform on Fair Trade and Consumer Protection
  • Director Assembly of Thailand Reform
  • Director of Duang Prateep Foundation (DPF)
  • Director of May 1992 Memorial Foundation
  • Director of 14 October Foundation


Other listed companies
– None –

Non-listed businesses

  • Chairman of Board of Pranda Group, 3 companies
  • Chairman of Executive Committee of Pranda Group, 1 company
  • Director of Pranda Group, 1 company
  • Executive Director of Pranda Group, 1 company
  • Director & Treasurer May 1992 Memorial Foundation
  • Director of CIBJO – The World Jewellery Confederation

% of Shareholding as of 28 December 2023

PDJ 34,921,451 shares or 5.89% of paid up shares

Family Relationship among Directors and Executives

Husband of Mrs. Sunanta Tiasuwan