Marcus Holmstroem

Senior Associate


Marcus Holmstroem, a Senior Associate in the London office, is a member of the Complex Litigation and Dispute Resolution group, where he focuses on domestic and international arbitration, and commercial litigation.

He acts for companies and institutions from a broad range of industries and sectors, and has particular experience representing clients within financial services industry and the telecom sector.

Before joining Orrick, Marcus trained with the international arbitration group of a magic circle firm based in Paris and with the arbitration group of a leading law firm in Stockholm. Marcus was a graduate analyst at a global investment bank in London prior to pursuing a career in practice.

  • Advising the Claimant, a global Telecom company, relating to breach of warranty and indemnity claims, including allegations of fraud by former senior management, in relation to an acquisition in a CIS country.

    Representing the Defendant, a Big Four accountancy firm, in High Court, Chancery proceedings relating to allegations of professional negligence in the context of fraud committed by senior management of an audit company. The case settled.

    Representing the Respondent in a confidential, complex arbitration against a founding partner of a successful investment firm relating to breach of post-termination restrictive covenants, including non-solicitation covenants. The arbitration settled.

    Representing the Respondents in High Court, Chancery proceedings against a leading fintech company and its founder in relation to a shareholding dispute. The case settled.