Gregory Glynn

  • Gregory Glynn
  • +353 1 920 1170
  • Arthur Cox, Ten Earlsfort Terrace, Dublin 2, D02 T380, Ireland


Greg has over 20 years of Arthur Cox experience in various litigious commercial matters in the High Court, Commercial High Court, Supreme Court, European Court of Justice, and in tribunals and investigations and tax appeals. He has also advised directors and officers of corporations on their duties and obligations relating to money laundering issues, legal mutual requests, search warrants, freezing orders and indictments.

Greg has considerable expertise in advising on investigations by foreign regulators such as the UK Serious Fraud Office, German authorities, Italian authorities, the US Department of Justice, the US Internal Revenue Service and the US Securities Exchange Commission.

He has spoken at fraud conferences in Ireland, England, Germany, Austria, Holland and the USA.  He is an advisory Board Member of FraudNet, an international network of fraud litigation specialists founded by the International Chamber of Commerce Board. Greg is also Chairman of the FraudNet Marketing Committee and Chair of Lex Mundi Cross-Border Investigations: Business Crimes and Compliance.


  • Advising an online seller in relation to cross-border fraudulent activity on its online seller account with a large online retailer, including advising on Irish and US offences.
  • Acting for UBI Banca in respect of their claim of over €12m regarding sums invested in Thema, a UCITS Fund, in respect of which HSBC acted as custodian. It is alleged that all of the monies invested by UBI Banca and other shareholders in Thema were channelled to the fictitious “hedge fund” operated by Bernard Madoff.
  • Advising a State Company in a Commercial Court dispute with a Spanish Company and US Company regarding the supply of defective products. Successfully mediating the case between the parties.  Dealing with jurisdictional issues to include seeking leave to issue and serve the Commercial Court proceedings outside the jurisdiction, and arguing that the contract concluded in Ireland, so as to allow the Irish entity retain control of the proceedings in Ireland.
  • Advising a state body on a C&AG Investigation / SEC Investigation.
  • Advising a company director in relation to an IRS/DoJ Investigation.
  • Successfully represented an Irish leasing company in respect of their claims against an Italian company where the Irish entity sought orders for judgment and possession arising out of sums due under helicopter leases where the helicopters were based in Kosovo and Italy. The case had a multi-jurisdictional aspect.
  • Advising an Irish citizen in relation to an application to lift approximately 60 freezing orders made by An Garda Síochána pursuant to section 17 of the Criminal Justice (Money Laundering and Terrorist Financing) Act 2010 in respect of trusts’ accounts and funds over a five year period.
  • Advising a Canadian citizen regarding his indictment from an online gambling company action in the US and his extradition from Dublin to New York.
  • Highly contentious dispute between four shareholders of a successful Irish company with another shareholder. Injunction relief was threatened and the parties then agreed to mediate the matter. Following an extensive mediation process the matter resolved amicably.
  • Successfully represented Russian and Irish entities in a complex employment/insolvency related dispute involving an injunction application and cross-border jurisdictional issues.
  • Advising pharmaceutical and medical device companies in relation to obligations under Irish lobbying legislation and the completion of returns / queries under the legislation.
  • Advising a client in respect of a dawn raid on foot of orders obtained through the Criminal Justice (Mutual Assistance) Act 2008 in respect of alleged tax evasion offences arising from the Cum-Ex trade scandal.
  • Advising a foreign sovereign state on obtaining orders to trace and monitor transactions relating to the proceeds of crime through Ireland’s Mutual Legal Assistance Treaty obligations


  • JD, 1988, Suffolk University Law School, Boston, Massachusetts
  • LL.B, 1983, University College, Galway
  • BA, 1980, University College, Galway
  • Admitted to the Massachusetts Bar, 1988
  • Admitted as a solicitor in Ireland, 1984
  • Chair, Lex Mundi Cross-Border Investigations: Business Crimes and Compliance
  • In February 2018, Greg was nominated by in-house counsel to appear in the White Collar Crime Expert Guide 2018 as one of the leading lawyers in this field. The Guide can be accessed here.
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  • In 2017, Greg was elected to the Advisory Board of FraudNet, the International Chamber of Commerce's International Network of Fraud litigation specialists.
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  • Arthur Cox is the TRACE Partner Firm for Ireland.
  • Greg has been consistently recognised in Who's Who Legal, including Litigation 2019 (Thought Leader), Investigations 2018 (Thought Leader) and Asset Recovery 2018 (Leading Lawyer).