Companies with litigation, investigations, and regulatory needs look to Wei Na Sim for her substantial experience in these areas. Some of Wei Na's most notable experience includes managing all legal and regulatory aspects of multi-jurisdictional financial crime compliance reviews conducted by monitors on banks in Asia, Europe, and the US. Wei Na also advises clients on environment, social and governance (ESG) related matters and counsels clients on compliance reviews and enhancements to internal policies and procedures.
Clients draw from Wei Na's in-depth knowledge in financial services-related matters, including commercial experience as in-house legal counsel from a secondment with an international bank. Further, Wei Na has litigation experience from Singapore, where she advised public listed companies from various industries, banks, insurers, and capital market intermediaries in complex commercial disputes and regulatory matters.
Wei Na is a regular contributor to various industry publications, legal updates and publications on litigation and regulatory topics. She is a co-editor of the firm's 'Eye on ESG' blog and is a lead member of the firm's Asia ESG team. Wei Na is passionate about pro bono and has completed several projects supporting refugees in Hong Kong. Wei Na is also a member of Mayer Brown's NextGen Committee in Hong Kong, promoting cross-industry professional networking amongst tomorrow's leaders.
Financial Services Regulatory Advisory
- An international bank and on all legal and regulatory aspects on a broad range of high-profile financial crime-related reviews and associated activities. Collaborated with subject matter experts from the bank to mitigate the risks of extraction, storage and production of large, complex datasets, providing onsite support during the reviews and advising on sensitive geo-political issues.
- An international bank on legal, regulatory and reputational risks arising from the publication of leaked documents by investigative journalists.
- An international bank in the drafting and negotiation of required contractual arrangements and obtained regulatory approvals for the appointment of an Independent Consultant to conduct annual OFAC (Office of Foreign Assets Control) compliance reviews.
- An international bank on data privacy issues in support of the bank's enhancement of its global financial crime data sharing framework for multinational corporations. Advised on updates to the bank's policies and procedures.
- The Hong Kong branches of global financial institutions on queries received from the Securities and Futures Commission and the Hong Kong Monetary Authority.
- The Hong Kong branch of a South East Asian headquartered bank on compliance with the Hong Kong Code of Conduct for Persons Licensed by or Registered with the Securities and Futures Commission.
- A Hong Kong payment services company on advertising restrictions imposed by the Securities and Futures Commission.
- A Hong Kong asset management company on its ESG policy and conducted a gap analysis against the Securities and Futures Commission's climate-related risk requirements in the Fund Manager Code of Conduct.
- Various financial institutions on matters concerning anti-money laundering laws in Singapore, including issues on suspicious transaction reporting, obligations to name beneficial owners of bank accounts and parties in wire transfers as well as customer due diligence requirements.
- For a securities company to respond in a show cause matter instituted by the Singapore Exchange in respect of breaches of trading restrictions on certain securities.
- Several banks with operations in Singapore on issues concerning secrecy obligations under the Singapore Banking Act and the Singapore Trust Companies Act in the context of requests for documents from foreign prosecution authorities.
- A major life insurance and asset management company on Singapore law issues relating to the implementation of the US Foreign Account Tax and Compliance Act by its local businesses. Co-ordinated the appointment of local counsel and the collation and review of local law advice from multiple Asian jurisdictions.
Banking and Financial Services Disputes
- An international bank in a high-profile claim commenced by a foreign individual in the Hong Kong Court of First Instance for Norwich Pharmacal and section 21, Evidence Ordinance (Cap. 8) orders.
- A Hong Kong securities company in disciplinary proceedings commenced by the enforcement section of The Stock Exchange of Hong Kong Limited.
- Several international banks in suits commenced by high net worth clients in the Singapore Supreme Court to recover losses sustained from investments during the global financial crisis.
- A BVI private investment company in a claim filed in the Singapore High Court against an international bank to claim for losses suffered by the client pursuant to several margin calls made by the bank.
- A Middle Eastern bank in a suit commenced by a Singapore listed infrastructure and projects company to restrain the bank from making payment to a third-party bank under counter guarantees governed by the URDG 458 and English law.
- A trust company in a claim commenced by an individual in the Singapore High Court for an alleged inter vivos gift by the trust company's deceased client to the claimant.
King's College London, LLM
National University of Singapore, LLB (Hons)
- Hong Kong
- Member, Women in Law Hong Kong
- Member, Women's White Collar Defense Association
- Member, Singapore Institute of Arbitration
- Associate Mediator, Singapore Mediation Centre
- Member, Singapore Chamber of Commerce Hong Kong
- Pro Bono Ambassador, NextGen Committee Member, Mayer Brown Hong Kong
- ESG & Sustainability Law Firm of the Year – Regulation Asia Awards for Excellence
- ESG-advisory Law Firm of the Year – ALB Hong Kong Law Awards
- Asia's Top 15 ESG Law Firms – Asian Legal Business
- Rising Star - White Collar Crime, Hong Kong SAR – Euromoney Rising Stars Expert Guide
- Financial Services Regulatory Team of the Year - IFLR Asia-Pacific Awards