Muireann is a partner in our Dispute Resolution team. She is also a member of our Investigations & White Collar Crime team. Her practise focuses on corporate investigations and civil and regulatory fraud, alongside which she maintains a broad commercial litigation practice.
Muireann has considerable expertise in conducting high profile, cross-jurisdictional, investigations and her practice focuses in particular on the financial services industry. Muireann acted for Volkswagen on the global diesel emission investigations. Notably, she acted for Standard Bank (ICBC Standard Bank) in relation to the investigation commenced by the US Department of Justice and the UK’s Serious Fraud Office which culminated in the UK’s first deferred prosecution agreement negotiation and a stay of prosecution reached with the DOJ. Muireann previously held the position of head of investigations (EMEA) at the international investment bank Morgan Stanley in London. She was responsible for investigating all regulatory enquiries from Ireland, UK, Europe and Russia. She regularly represented Morgan Stanely in respect of enquiries by the Financial Conduct Authority.
Muireann has represented clients in disputes before the London Commercial Court, the English Court of Appeal and London Court of International Arbitration.
Muireann has over 15 years of extensive international experience from practice in London and New York. Muireann trained at White & Case and has practised with international law firms Jones Day and Quinn Emanuel.
Muireann is a former prosecutor with the United Nations International Criminal Tribunal for the former Yugoslavia in The Hague. She worked at the United Nations Headquarters in New York and the World Trade Organisation in Geneva.
Corporate and regulatory investigations
Financial services investigations and compliance
Anti-bribery and corruption
Commercial litigation and arbitration
'Recommended Lawyer' Muireann Dennehy brings “significant specialist international expertise to the team, with an impressive cv acting for large multi-nationals in complex cases.”
Spoke at 2nd Annual Ireland Financial Crime Prevention Symposium.
Spoke at the 8th Annual London White Collar Crime Institution in association with the American Bar Association.
Held workshop at the 1st Women in Finance Conference in Dublin.
Muireann is a former lecturer at King’s College London where she lectured international law and human rights law.
Savii Recruitment Podcast on SEAR and practical experience of the SMCR in the UK. Listen now
Appearance on Newstalk's The Hard shoulder with Ivan Yates on SEAR. Listen now
Mason Hayes & Curran In-House Counsel Masterclass: Investigations & Inquiries in the Westin Hotel, Dublin (October 2019)
Law Society of England and Wales (non-practising)
Bar of the State of New York (non-practising)
United Nations Justice Rapid Response
Civilian Expert, UK’s Stabilisation Unit
Women’s White Collar Defense Association
American Bar Association
European Criminal Bar Association
Fraud Advisory Panel
Fraud Lawyers Association
Columbia Law School, New York, LLM (Fulbright Scholar and Harlan Fiske Stone Scholar)
BPP Law School, London , LPC
Trinity College, Dublin, LLB (First Class Honours)