Ban Leong Oo



Ban Leong is the Managing Director and founder of Prolegis LLC. His experience covers a varied range of corporate and commercial work, particularly cross-border acquisitions, joint ventures and strategic investments, acting for local and multinational corporations as well as governmental instrumentalities.

He is qualified in both Singapore and England & Wales and prior to establishing Prolegis, had for the large part of his career practised in the Singapore office of a Magic Circle firm. He has been in practice for over 25 years.

Ban Leong has been recommended in key industry publications in the ‘International Firm’ category as a leading lawyer for Corporate M&A, including IFLR1000, Legal 500 and Chambers Global, and has been  commended under the ‘Local Firm’ category for Corporate and M&A in Legal 500 since 2016.