People

 

Our Reach

Prolegis and leading global law firm Herbert Smith Freehills are now registered as a Formal Law Alliance in Singapore, formalising a longstanding and close working relationship between our two firms.


The alliance creates a "one-stop shop" for clients to access the legal services of each firm – the Singapore law expertise of Prolegis LLC and the international skills of Herbert Smith Freehills' global network in Asia Pacific, Europe, the Middle East and Africa and North America.

Chambers and Partners IFLR 1000 The Legal 500 Asia Law Profiles
'Prolegis is.......particularly adept in cross-border transactions. Clients highlight its 'extensive experience in complicated corporate matters', 'proactive' approach and 'value-for-money package'.
(Ranked Leading Firm, Corporate and M&A, Asia Pacific Legal 500, 2019)
Ban Leong Oo is praised for his 'intellect, commercial pragmatism and commitment to client service', he 'inspires confidence, is incredibly persuasive in an unconfrontational way and is a smooth and strategic operator'.
(Ranked Leading Firm, Corporate and M&A, Asia Pacific Legal 500, 2019)
'...Ralph Lim is a "very experienced practitioner,"'.
(Ralph Lim - Ranked Leading Lawyer, M&A Chambers 2020/2021)
‘.. Stands out for the quality of its advice’ and team members that are ‘commercial and have a real depth and breadth of experience’, enabling them to ‘advise not only on the technical legal issues but on market practice’.
(Ranked Leading Firm, Corporate and M&A, Asia Pacific Legal 500, 2017/18)
Ban Leong Oo is ‘client-oriented, responsive and the person to go to when market knowledge or strategic decisions are critical’.
(Corporate & M&A, Asia Pacific Legal 500, 2017/18)
‘Noted Firm’
(Corporate/M&A, Chambers 2017/18)
Within Allen & Overy [Singapore]'s M&A practice, the firm's star performer. Very thorough. Responsive, meets tight deadlines and provides excellent products.
(Ban Leong Oo - Ranked Leading Lawyer, M&A (Foreign Firms) IFLR 2012)
… One client notes: 'The lawyer responsible for our files has been Ban Leong Oo. He is very professional, incredibly service-minded and a very good lawyer…'
(Ranked Leading Lawyer – Mergers & Acquisitions (Foreign Firms) IFLR 2011)
… Sources describe Ban Leong Oo as 'extremely good, reliable and responsive'. He considers every option and thinks things through, and brings more than a decade of cross-border experience to the team. Recent highlights include advising Tyco, in its disposals by separate auctions of various businesses in multiple jurisdictions across Asia.
(Ranked Leading Lawyer – M&A; (International Firms) Chambers 2012)
… very professional, incredibly service-minded and a very good lawyer………
(Ban Leong Oo - Ranked Leading Lawyer, Mergers & Acquisitions (Foreign Firms) IFLR 2011)
… Ban Leong Oo is 'extremely understanding of the pressures of running a business'. According to sources, 'he inspires confidence in finding the best course of action to take'.
(Ranked Leading Lawyer, Corporate – M&A; (International Firms) Chambers 2011)
… Ban Leong Oo continues to impress. "He has come up with practical and creative solutions to complex problems in some very difficult jurisdictions," says one client, while another describes him as "very thorough" and "responsive". "He covers all possible legal and commercial angles when he looks at a problem and he meets tight deadlines. I've been very pleased," adds the client………
(AsiaLawProfiles 2012)
… Ban Leong Oo is approachable, prompt and thorough, but the best thing about him is his ability to reconcile our commercial needs with the law, reports clients...
(Ranked Up-and-coming Individual, Corporate M&A/International Firms - Chambers 2010)
…recognised leader in the Group…
(AsiaLawProfiles 2010)
… Ban Leong Oo wins fans with his responsive and committed approach - you can get him at all hours, and if you say you need an answer, you can count on getting it .… He is also a fine communicator who gets and conveys points very quickly…
(Ranked Up-and-coming Individual, Corporate M&A/International Firms - Chambers 2009)
..Ban Leong Oo deploys his strong legal expertise with finesse and diplomacy while always keeping his eye on the ball…
(Asia Pacific Legal 500, 2009)
…One source says that Ban Leong Oo is "meticulous and gives quick and accurate advice," while another interviewee reports that "he summarises complex issues in a clear and concise way."…
(Ranked Leading lawyer - Corporate/M&A, Chambers 2021)
…Ralph Lim is an experienced lawyer in Singapore's corporate and M&A legal market…
(Ranked Leading Lawyer - Corporate/M&A, Chambers 2021)
…Sandra Tsao is … 'making an impression'…
(Corporate and M&A, Asia Pacific Legal 500, 2020)
…Prolegis stands out amongst the best…
(Corporate and M&A, Asia Pacific Legal 500, 2020)
…Ban Leong Oo brings a unique blend of technical expertise and commercial pragmatism to every issue…
(Corporate & M&A, Asia Pacific Legal 500, 2020)
Oo Ban Leong

Ban Leong Oo

Tel   +65 6812 1351

Email  banleong.oo@pro-legis.com

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. Ban Leong is both Singapore and English qualified, 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 The IFLR1000, The Legal 500 and Chambers Global, and more recently, consistently commended under the 'Local Firm' category for Corporate and M&A in The Legal 500 since 2016. He authored The Practical Law Company's series on "Cross Border Acquisitions" for Singapore for both the 2009 & 2011 editions.

Sandra Tsao

Sandra Tsao

Tel    +65 6812 1353

Email  sandra.tsao@pro-legis.com

Sandra is a Director at Prolegis. She has significant experience of over more than two decades in a broad spectrum of commercial, corporate finance and regulatory work including equity capital markets transactions, private equity investments, private and public company mergers and acquisitions, joint ventures, corporate restructuring and general corporate advisory work.

She is both Singapore and English qualified. She began her legal career as a Deputy Public Prosecutor at the Attorney-General's Chambers. Prior to joining Prolegis, she was a corporate finance partner in two leading Singapore law firms, and also practised in the London offices of two of the world's largest law firms. She read law under a Singapore Public Service Commission Merit Scholarship and has an LLM in International Commercial Law from Nottingham University and the National University of Singapore. She is a Sloan Fellow and was awarded the Sloan Fellowship Women's Scholarship to pursue the Sloan Fellowship Masters in Leadership and Strategy at London Business School.

Sandra has been noted as one of Singapore's leading Lawyers in Chambers Global and a recommended lawyer in The Legal 500. She has co-authored numerous articles on Singapore law and regulatory matters. She regularly conducts seminars and trainings for clients on regulatory matters including on corporate governance, AML/anti-bribery, competition and data protection.

Ralph Lim

Ralph Lim

Tel    +65 6812 1350

Email  ralph.lim@pro-legis.com

Ralph is a Director at Prolegis. He has over 20 years' experience advising clients on a wide range of corporate and commercial matters including public and private mergers and acquisitions, initial public offerings, equity fund raisings, and private equity and venture capital fund investments. Ralph's clients include corporates ranging from start-ups to listed companies and MNCs as well as private investors, private equity funds and venture capital funds.

Ralph has been consistently recognised as a market leading lawyer in the corporate and M&A practice. Prior to joining Prolegis, Ralph headed the corporate practice in the Singapore office of an international law practice and has also previously co-headed the Mergers and Acquisition Practice at one of Singapore's leading law firms. He is ranked as a Band 4 Leading Individual (Corporate/M&A: Domestic – Singapore) by both Chambers Asia-Pacific and Chambers Global, is recognised as a highly regarded individual by IFLR1000 and as a Distinguished Practitioner (Corporate and M&A) by AsiaLaw. He has also been endorsed by Best Lawyers for his M&A work.

Valerie Cheah

Valerie Cheah

Tel   +65 6812 1350

Email  valerie.cheah@pro-legis.com

Valerie is a Director at Prolegis. She has significant experience providing legal advisory services in relation to trusts, asset protection, succession planning, estate management as well as structured trade finance.

Valerie is English, Singapore and Malaysia qualified and has practised with some of the most established law firms in Singapore and Malaysia. She also played an instrumental role in setting up the Malaysian office of a prominent Singapore law firm. Valerie transitioned into the financial industry in 1998 and was a legal director with a boutique private equity firm in Singapore prior to joining Prolegis.

Wah Nam Tan

Wah Nam Tan

Tel    +65 6812 1356

Email  wahnam.tan@pro-legis.com

Wah Nam is Of Counsel at Prolegis. His experience spans the public and private sectors. This includes, in the public sector, advising and representing the Singapore government in legal and regulatory matters, contracts and legal proceedings; and in the private sector, representing clients in shareholder agreements, joint ventures, acquisitions, investments, and general corporate and commercial advisory and contracts work.

He was a corporate and commercial partner at a leading law firm in Singapore and has held senior legal appointments at leading Singapore-listed multinationals with global operations.

Wah Nam was also a state counsel in the Singapore Legal Service. He read law at Cambridge University under a Singapore Overseas Merit scholarship, and was called to the English Bar. He was commissioned as an infantry officer in the Singapore Armed Forces and has held command and staff appointments.

Sze Min Lim

Weihong Lin

Tel   +65 6812 1358

Email  weihong.lin@pro-legis.com

Weihong is a Senior Associate at Prolegis. His main areas of practice include public take-overs and private mergers as well as acquisitions and joint ventures, in both local and cross-border contexts. In addition to transactional corporate and commercial work, he has also advised clients on regulatory matters such as securities, financial advisory and insurance regulations.

Weihong graduated from the National University of Singapore and is Singapore qualified. Prior to joining Prolegis, he practised in one of the "big four" law firms in Singapore.

Sze Min Lim

Pei Tong Ng

Tel   +65 6812 1355

Email  peitong.ng@pro-legis.com

Pei Tong is an Associate at Prolegis. His main areas of practice include capital markets, public take-overs and private mergers as well as acquisitions and joint ventures, in both local and cross-border contexts. In addition to transactional corporate and commercial work, he has also advised clients on regulatory matters such as securities and financial advisory regulations as well as compliance with SGX continuing listing obligations.

Pei Tong graduated from the University of Melbourne and is Singapore qualified. Prior to joining Prolegis, he practised in two of the "big four" law firms in Singapore. He also read Mathematics at the National University of Singapore under a Public Service Commission scholarship. Pei Tong is business-bilingual in English and Mandarin.

Su Rong Ng

Su Rong Ng

Tel   +65 6812 1359

Email  surong.ng@pro-legis.com

Su Rong is an Associate at Prolegis. She is business-bilingual in both English and Chinese, and her principal areas of practice include capital markets, initial public offerings, public and private mergers and acquisitions, and joint ventures, both locally and regionally. Su Rong has particular experience supporting the hospitality industry, and brings a unique understanding to the practice from this perspective.

In addition to transactional corporate and commercial work, she has also advised clients on regulatory matters including SGX continuing listing obligations.

Su Rong graduated with First Class Honours from University College London and is Singapore qualified. Prior to joining Prolegis, she practiced in one of the "big four" law firms in Singapore.

Jun Jie Chia

Jun Jie Chia

Tel   +65 6812 1354

Email  junjie.chia@pro-legis.com

Jun Jie is an Associate at Prolegis. Prior to joining Prolegis, Jun Jie practised in one of the "big four" law firms in Singapore where he advised clients on civil and commercial disputes including employment, shareholder, contractual, and tortious matters. His disputes background allows him to provide a unique perspective on the corporate and commercial matters that he supports.

Jun Jie graduated magna cum laude from Singapore Management University with a Juris Doctor degree, and is Singapore qualified. Prior to this, Jun Jie graduated with First Class Honours in Sociology, and was top student from Nanyang Technological University. He has completed student exchange programmes with The University of Hong Kong and also, Halmstad University in Sweden.

Jun Jie is business-bilingual in English and Mandarin.

  • 'Prolegis is…….particularly adept in cross-border transactions. Clients highlight its 'extensive experience in complicated corporate matters', 'proactive' approach and 'value-for-money package'.

    (Ranked Leading Firm, Corporate and M&A, Asia Pacific Legal 500, 2019)
  • Ban Leong Oo is praised for his 'intellect, commercial pragmatism and commitment to client service', he 'inspires confidence, is incredibly persuasive in an uncofrontational way and is a smooth and strategic operator'.

    (Ranked Leading Firm, Corporate and M&A, Asia Pacific Legal 500, 2019)
  • ...'smart, hardworking and incisive', 'extremely commercial and pragmatic' and 'a trusted business adviser that adds value beyond what is expected of a traditional legal adviser'.

    (Ranked Leading Firm, Corporate and M&A, Asia Pacific Legal 500, 2019)
  • …'Stands out for the quality of its advice’ and team members that are ‘commercial and have a real depth and breadth of experience’, enabling them to ‘advise not only on the technical legal issues but on market practice

    Ranked Leading Firm, Corporate and M&A, Asia Pacific Legal 500, 2017/18
  • Ban Leong Oo is ‘client-oriented, responsive and the person to go to when market knowledge or strategic decisions are critical’.

    Corporate & M&A, Asia Pacific Legal 500, 2017/18
  • ‘Noted Firm’

    Corporate/M&A, Chambers 2017/18
  • Within Allen & Overy [Singapore]'s M&A practice, the firm's star performer. Very thorough. Responsive, meets tight deadlines and provides excellent products.

    Ban Leong Oo - Ranked Leading Lawyer, M&A (Foreign Firms) IFLR 2012
  • …One client notes: 'The lawyer responsible for our files has been Ban Leong Oo. He is very professional, incredibly service-minded and a very good lawyer… We also saw willingness to be flexible on rate arrangements and a wish to find an equitable solution'.

    Ranked Leading Lawyer – Mergers & Acquisitions (Foreign Firms) IFLR 2011
  • Sources describe Ban Leong Oo as 'extremely good, reliable and responsive'. He considers every option and thinks things through, and brings more than a decade of cross-border experience to the team. Recent highlights include advising Tyco, in its disposals by separate auctions of various businesses in multiple jurisdictions across Asia.

    Ranked Leading Lawyer – M&A; (International Firms) Chambers 2012
  • …very professional, incredibly service-minded and a very good lawyer………

    Ban Leong Oo - Ranked Leading Lawyer, Mergers & Acquisitions (Foreign Firms) IFLR 2011
  • …Ban Leong Oo is 'extremely understanding of the pressures of running a business'. According to sources, 'he inspires confidence in finding the best course of action to take'.

    Ranked Leading Lawyer, Corporate – M&A; (International Firms) Chambers 2011
  • …Ban Leong Oo continues to impress. "He has come up with practical and creative solutions to complex problems in some very difficult jurisdictions," says one client, while another describes him as "very thorough" and "responsive". "He covers all possible legal and commercial angles when he looks at a problem and he meets tight deadlines. I've been very pleased," adds the client… AsiaLawProfiles 2012

  • …Ban Leong Oo is approachable, prompt and thorough, but the best thing about him is his ability to reconcile our commercial needs with the law' , reports clients...

    Ranked Up-and-coming Individual, Corporate M&A/International Firms - Chambers 2010
  • …recognised leader in the Group…

    AsiaLawProfiles 2010
  • …Ban Leong Oo wins fans with his responsive and committed approach - you can get him at all hours, and if you say you need an answer, you can count on getting it .… He is also a fine communicator who gets and conveys points very quickly…

    Ranked Up-and-coming Individual, Corporate M&A/International Firms - Chambers 2009
  • …Ban Leong Oo deploys his strong legal expertise with finesse and diplomacy while always keeping his eye on the ball…

    Asia Pacific Legal 500, 2009
  • …One source says that Ban Leong Oo is "meticulous and gives quick and accurate advice," while another interviewee reports that "he summarises complex issues in a clear and concise way."…

    Ranked Leading lawyer, Corporate/M&A, Chambers 2021
  • …Ralph Lim is an experienced lawyer in Singapore's corporate and M&A legal market…

    Ranked Leading lawyer, Corporate/M&A, Chambers 2021
  • …Sandra Tsao is … 'making an impression'…

    Corporate and M&A, Asia Pacific Legal 500, 2020
  • …Prolegis stands out amongst the best…

    Corporate and M&A, Asia Pacific Legal 500, 2020 – client testimonial
  • …Ban Leong Oo brings a unique blend of technical expertise and commercial pragmatism to every issue…

    Corporate & M&A, Asia Pacific Legal 500, 2020 – client testimonial