AMSA Executive Board

Mr Gregory Sim has closed to 30 years of experience in finance and business management, particularly in the listed companies, real estate and hospitality industry in Singapore and across the regions. Mr Sim is currently the Deputy CEO of Haiyi Holdings Pte. Ltd.. Prior joining to the Haiyi, Mr Sim was the Group Chief Financial Officer of GuocoLand Limited and the Deputy CEO of SingHaiyi Group Ltd. Other previous senior management positions held include Chief Financial Officer and Head of Investor Relations with FEO Hospitality Asset Management Pte. Ltd, REIT manager of Far East Hospitality Trust and Deputy Director, Management Services of Far East Organisation. Mr Sim holds a Bachelor of Accountancy (Merit) from Nanyang Technological University and is a Fellow Chartered Accountant of Singapore with the Institute of Singapore Chartered Accountants.

Mr. Gordon Tang is a distinguished leader in the sports industry, committed to advancing the Olympic movement in Asia and worldwide. Since 2015, he has served as Vice President of the National Olympic Committee of Cambodia and President of the Cambodia Sailing Federation. From 2021, he has been Executive Vice President of the Olympic Council of Asia and Chairman of its Esports, Martial Arts and Mind Sports Committee. In 2022, he founded the Asian Mixed Martial Arts Association in Singapore, the first MMA body in Asia officially recognized by the Olympic Council of Asia. A former professional athlete, Mr. Tang prioritizes industrial growth, talent development, and athlete welfare. Under his leadership, MMA was recognized as a medal sport in major continental events, including the Asian Youth Games in Bahrain, Asian Indoor & Martial Arts Games in Saudi Arabia, and the Asian Games in Japan. As Chairman of the Esports, Martial Arts & Mind Sports Committee, he has spearheaded initiatives to integrate new-generation sports into the Olympic family, driving the launch of the Asian Esports Festivals, Asian Esports Summit, and community programmes. Eleven esports titles will feature at the 2026 Aichi-Nagoya Asian Games. Recognizing the rising importance of mental agility and intellectual competition, Mr. Tang has worked tirelessly to elevate mind sports as a respected discipline alongside physical sports. In February 2025, with strong support from the Olympic Council of Asia, he established the Asian Mind Sports Association in Bangkok. This landmark initiative set the foundation for the inaugural Asian Esports and Mind Sports Games in 2027, a platform designed to showcase Asia’s talent in chess, bridge, go, xiangqi, esports, and other strategic disciplines. Mr. Tang envisions mind sports not only as competitive pursuits, but also as powerful tools for education, cognitive development, and cross-cultural exchange—enhancing Asia’s role as a global hub for both athletic and intellectual excellence.

Galastein is a seasoned professional with extensive experience in the sports industry and managing major sporting events. He previously worked with Sport Singapore and the Singapore Sports Hub, where he played a pivotal role in shaping the country’s sporting landscape. At Sport Singapore, Galastein was involved in a variety of sporting initiatives aimed at inspiring and increasing sports participation and enhancing the nation’s sporting culture. At the Singapore Sports Hub, one of Asia’s premier sports, lifestyle and entertainment venues, Galastein was a key figure in managing large-scale international sporting events. His portfolio included overseeing high-profile marquee events such as the 28th SEA Games, the World Rugby Sevens Series, and FIBA events (Fédération Internationale de Basketball), among others. Galastein’s expertise in event operations, logistics, fan engagement, commercialisation and stakeholder management played a crucial role in ensuring the success of these events, cementing Singapore’s reputation as a world-class destination for international sports. Galastein is also currently the Director General for the Asian Mixed Martial Arts Association.