Adrian Koller’s practice focuses on public and private M&A and on financing transactions, including complex acquisition and other structured financings. Adrian also advises on capital markets transactions and other corporate and commercial law matters.


Adrian’s practice focuses on complex cross-border financing transactions, including leveraged and acquisition finance, structured finance, project and infrastructure finance, restructuring financings, export finance, rights offerings and bond issuances. He acts for large banks and debt funds, private equity investors and other sponsors, as well as for borrowers and issuers, including major and listed corporates across all industries on financing transactions.

He also advises on domestic and cross-border private and public M&A transactions across various industries, including in the energy and technology sectors. Adrian’s practice includes advising on capital markets transactions as well as other corporate and commercial law matters.

  • Advised Steinhoff Europe AG on the implementation of its corporate and financial restructuring

  • Advised Heptagon Advanced Micro-Optics and GGV Capital, Temasek, Jolt Capital, Nokia Growth Partners, Innovacom, Credence, Pantheon, Iconiq Strategic Partners, Matrix Partners, Orchid Investments, Vertex Ventures, AAC Technologies and other former shareholders of Heptagon on the sale of Heptagon to ams AG and the structuring of the earnout

  • Advised CVC on the acquisition financing of its acquisition of a majority stake in Breitling*

  • Advised Enagás and Fluxys on the acquisition of a stake in Trans Adriatic Pipeline*

  • Advised EQT and Kuoni Group on the sale of Kuoni’s Global Travel Services to JTB Corporation*

  • Advised Capita on the financing of the acquisition of the avocis Group*

    *Transactions before 2018 while working at another major Swiss law firm

  • Member of the editorial board of a legal periodical on corporate and capital markets law GesKR (Zeitschrift für Gesellschafts- und Kapitalmarktrecht)
  • Zurich Bar Association

Market Perception

  • Adrian Koller is looked upon with enormous favour for his skilful handling of high-value acquisitions and refinancings.

    Who's Who Legal 2021
  • Adrian Koller is extremely responsive and has an extremely good legal understanding. Further, he has a very good ability to explain complex legal questions with rather simple words.

    IFLR 1000 2020/2021
  • Very accessible, fast and on time, quick understanding of the issues at stake, excellent knowledge of the business.

    IFLR 1000 2020/2021

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