With more than 25 years of experience in accounting and tax, including four years in New York, Ms. Koonachoak has helped multinational companies to solve complex, multi-disciplined tax issues. Her work has included cross-border M&A, supply chain restructuring within group companies, tax controversy management, and advanced pricing agreement negotiations with the Thai tax authorities. 

Notably, Ms. Koonachoak is responsible for international tax, M&A, and supply chain restructuring. She has worked with clients across various industries, including consumer products, pharmaceuticals, chemicals, automotives, alternative energy, software and information technology, and hospitality businesses. 

Prior to joining A&M, Ms. Koonachoak spent 11 years with Deloitte in Thailand, where she most recently served as Tax Partner. In this role, she was responsible for international tax, M&A, and supply chain restructuring. 

Ms. Koonachoak earned a bachelor’s degree in accountancy from Chulalongkorn University, Thailand, and a master’s degree in professional accountancy from Indiana University, U.S. Since 2018, she has been recognized as a leading practitioner in tax controversy and among women in tax by the International Tax Review.