Brendan O'Brien

Brendan O'Brien


T +353 1 470 6653
M +353 86 130 4885

Practice Areas

Brendan O'Brien is based in Walkers' Irish office where he is partner and head of the Irish Corporate group.
Brendan advises on a broad range of corporate matters, including mergers and acquisitions, private equity, venture capital and shareholder / joint venture arrangements. He has extensive expertise on Irish aspects of international corporate reorganisations and regularly advises domestic and international clients on Irish corporate governance matters. He has particular experience in advising financial services clients on their Irish corporate matters. Brendan's team also advise on a wide range of commercial contracts.

Recent transaction highlights include advising:

M&A / Fundraising

  • LCI on a US $230 million joint venture
  • Airborne Capital Limited on its establishment and subsequent debt and equity raise
  • Iceland Seafood International hf (a listed company) on the acquisition of a majority stake in the Oceanpath Seafoods group
  • an international fund administrator on the acquisition of two leading global fund administration businesses
  • the management team on their leveraged buyout of the Extraspace Group, a leading manufacturer of modular buildings
  • the sole shareholder on the sale of a leading Irish fashion retailer
  • a leading international corporate travel business on its first investment in the Irish market
  • an Irish data recovery business on an equity fundraising and implementing its buy and build strategy
  • several domestic start-ups on initial fundraising rounds
Restructuring / Corporate Governance

  • Halma plc (a FTSE100 company) on several corporate restructurings
  • an international medical device business on the Irish aspects of its corporate restructuring
  • an international auctioneering business on the Irish aspects of its corporate restructuring
  • multiple aircraft leasing platforms on their Irish corporate requirements
  • multiple international companies establishing themselves in Ireland

Prior to joining Walkers, Brendan worked in the corporate finance group of a top five law firm in Dublin. During this time he completed a secondment with one of Ireland's largest utility companies and later with a global insurance company where he managed the successful completion of several cross-border merger transactions.

Admitted In:
England and Wales (not practising)

BCL, University College Dublin
LLM (Commercial Law), University College London

2020 Legal 500 - Next Generation Partner and Recommended Lawyer (Commercial, Corporate and M&A) - ‘Brendan O’Brien is a real rising star. His all-round knowledge and commercial acumen are truly impressive.’

2020 IFLR 1000 - Leading Lawyer and Highly Regarded

2019 Legal 500 - Recommended Lawyer - 'Excellent practitioner and adviser

2019 IFLR 1000- Highly Regarded:

"Brendan O'Brien provides a fantastic service. He is responsive and commercial. A pleasure to deal with." 

2018 Legal 500 - Recommended Lawyer: "Brendan O’Brien stands out for his ‘professionalism and business acumen’."

2018 IFLR 1000 - Rising Star:

  • “Extremely professional. Superb contract and industry knowledge and very committed.”
  • “Really professional and always accessible. Has really good attention to detail and is very commercial.”
  • “Extremely professional, friendly and straightforward to deal with.”

2017 Legal 500 - Recommended Lawyer: "Brendan O'Brien is a 'consummate professional'."

Member of the Law Society of Ireland

Member of the Law Society of England and Wales (not practising)

Member of the Dublin Solicitors Bar Association