Katja Butler focuses on transactional private equity matters and advises sponsor-held portfolio companies between buyout and exit.


Ms. Butler frequently assists with issues that impact a group’s capital structure, and she has substantial experience in implementing equity recaps and management equity incentive programmes, simplifying and restructuring international group structures and advising in relation to contentious management departures (including regarding settlement terms and repatriation of equity). She also advises on the execution of exit planning and co-investment terms. In 2017, Ms. Butler was recognised by The Lawyer as one of London’s top female private equity stars and, in 2018, was featured on the publication’s Hot 100 list, which recognises the U.K.’s top lawyers. She also was named as a Female Future Leader by the Financial Times in its HERoes: Champions of Women in Business List 2018 and as Best in Private Equity at the Euromoney LMG 2018 Europe Women in Business Law Awards.

Ms. Butler representations include advising:

  • funds advised by Castik Capital in their acquisition of two IP management services and software companies, ipan Group and Delegate, and their subsequent merger with CPA Global, a portfolio company of Leonard Green Partners and Partners Group;
  • Hg:
    • in its £410 million sale of U.K.-based visual effects producer Foundry to Roper Technologies, a U.S.-headquartered technology company specializing in niche markets;
    • in its sale of a minority stake in portfolio company Visma to the Canada Pension Plan Investment Board;
    • as lead investor in the US$5.3 billion buyout of Visma, a leading provider of business software in the Nordic region. This was Europe’s largest-ever software buyout;
    • in its further €640 million investment in Visma;
    • in its sale of Ullink SAS to Itiviti AB, a portfolio company of Nordic Capital;
    • in its sale of Parts Alliance to Uni-Select Inc. for £205 million;
    • in its investment in Mitratech, alongside TA Associates and the management team at Mitratech;
    • in its investment in Kinapse from Synova Capital;
    • in its investment in Sovos Compliance, alongside Vista Equity Partners;
    • in its acquisition of Raet from CVC Capital Partners;
    • in its sale of a minority stake in portfolio company JLA, together with a refinancing;
    • in its equity recapitalisation of portfolio company IRIS; and
    • in its acquisition of The Foundry from The Carlyle Group for US$312 million;
  • Hg portfolio companies Ullink, Iris and Sovos in strategic bolt-on transactions;
  • HighQ in its sale to Thomson Reuters Corporation;
  • Montagu portfolio companies, including Equatex, Open GI, Funeral Services Partners, Covidence and DEAS, in their capital structures;
  • Castik Capital portfolio company Waterlogic in bolt-on acquisitions and its capital structure;
  • Pret A Manger (Europe) Ltd, a portfolio company of JAB Holding Company LLC, in its acquisition of EAT Limited;
  • Montagu Private Equity in its sale of Covidence to EMK Capital LLP;
  • Montagu Private Equity and the other shareholders of Equatex in its €354 million disposal to Computershare;
  • the portfolio companies of various financial sponsors in matters impacting their capital structures, including management sell-down, Eurobond listings, capital resets and simplifications; and
  • TPG Capital in its acquisitions of:
    • TSL Education from Charterhouse Capital Partners; and
    • a majority stake in Victoria Plumb from the Walker Family.



  • M.A. (Law), Trinity Hall, University of Cambridge, 2006
  • Legal Practice Course, The College of Law Moorgate, London, 2007


  • Solicitor, England & Wales