Lisa O'Neill

Primary Focus & Experience

Lisa advises on a wide range of corporate and M&A transactions, including large public and private mergers and acquisitions, divestitures, takeovers, joint ventures, re-organisations and commercial contracts. Lisa’s clients include FTSE 100, Fortune 250, international energy companies, infrastructure funds, financial institutions and private equity funds.

In addition to the Praxair deals noted above, Lisa's experience includes:

• Advised Maverick Aviation Partnership LP, an investment vehicle managed by Carlyle Aviation Partners, in connection with an agreement to acquire AMCK Aviation’s portfolio of aircraft. The total appraised value of the existing fleet is in excess of $4 billion, not including the order book.
• Advising a consortium led by Apollo Global Management Inc. and its subsidiaries in connection with the long-term strategic investment entered into with The Abu Dhabi National Oil Company for an underlying real estate portfolio valued at $5.5 billion.
• Advising Actis, a global emerging markets investment firm, on their sale of Zuma Energía, an energy generation development platform.
• Advising Otto Group on the partnership with Advent International for Hermes UK and Hermes Germany. As a result of the transaction, Advent acquires a 75% stake in Hermes UK and a 25% stake in Hermes Germany.
• Advising Centricus on establishing a multi-billion alternative investment platform and on its fee arrangement with SoftBank in connection with the establishment of the US$100 billion Vision Fund.
• Advising Actuant, a NYSE listed diversified industrial company, on the multi-jurisdiction sale of the Viking Sea Tech business to Acteon and acquisition of the Mirage Business from Acteon (a portfolio company of Kohlberg Kravis & Roberts & Co. L.P.).
• Advising the Al-Thani family on the acquisition of Claridges, the Connaught and the Berkeley hotels.
• Advising Shell on the sale of its liquefied petroleum gas businesses in eight European countries.
• Advising Vale SA on the USD$4.9 billion sale of bauxite, alumina and aluminum mining and smelting assets to Norsk Hydro ASA.
• Advising RWE Dea as the target in the sale by its parent company, RWE AG, for €5.1 billion, and, separately, in a joint venture with BP on a US$10 billion development agreement with the Egyptian government.

Recognition & Accomplishments

In recent years, Lisa has received multiple awards and accolades for her work on Corporate transactions, including:

• Listed in 2024 Best Lawyers for Corporate Law
• Nominated as Leading Corporate/M&A practitioner – United Kingdom by Euromoney's Women in Business Law Expert Guide 2021 and 2020 
• Recognised for Commitment to Client Service - BTI M&A Client Service All-Stars Guide 2021
• Corporate and Commercial: Individual (London) of the year by Legal 500 UK 2020
• Corporate Law Award Winner – United Kingdom by 2020 International Advisory Experts Awards
  
• Most Valuable Player (MVP) of the Year 2019 in Mergers and Acquisitions by Law360
• Best in Mergers and Acquisitions by the 2019 Women in Business Law
• “M&A Deal of the Year 2019” International M&A Award Winner by The M&A Advisor

Lisa has also received:

• M&A Team of the Year (Large Deal) by Legal Week British Legal Awards 2018 (shortlisted)
• Lexology Client Choice Award for Excellence in Service 2017
• Rising Star in Legal Services: 40 under 40 2016
• Rising Star in The Lawyer Hot 100 2016

Lisa has been recommended among a variety of journals including in Corporate, Oil and Gas and in Commercial: M&A – mid-market by The Legal 500 UK 2018/2019 as well as a ranking in IFLR1000 2020 as a Notable Practitioner for M&A and Oil & Gas.