Leadership Team

Our People

Our executives embrace the enterprising spirit of Colliers International. They are passionate, committed leaders who share a common goal: to accelerate the success of everyone associated with our company, including our clients, sales professionals, support staff, communities and business partners.

Thailand Leadership Team

Sirima Munphet
Chairman of Board
Simon-Landy

Simon Landy
Co-founder and Advisor 

Ratchaphum Jongpakdee

Ratchaphum Jongpakdee
Deputy Managing Director


Greg White
Director Consultancy Office Services

Panissara Charoensit

Panissara Charoensit
Chief Financial Officer
Accounting



Barny Swainson
Senior Director, Capital Markets and Investment Services




Chomratkamol Soontorntarawong
Director, Project Sales & Marketing



Worawut Rutwaree
Director, Advisory Services




Natcha Taepongsorat
Associate Director, Advisory Services





Wasan Rattanakijjanukul
Associate Director, 
Capital Markets and Investment Services




Jeremy Osullivan
Senior Manager, Valuation & Advisory Services




Napaswan Chotephard
Senior Manager,
Residential Sales & Leasing



Sorravich Siriwattanapornchai
Manager, 
Industrial Services




Hathairat Yoorod
Senior Manager, 
Office Services


Thailand