A&O Shearman
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Directors’ and officers’ liability insurance, professional supervisory proceedings and other insurance disputes are the standout strengths of the litigation offering at A&O Shearman. The practice is also well recognised for its record as insolvency counsel and in resulting disputes. Marc Zimmerling leads the team and has a strong track record acting for national and international companies. Finance sector litigation and investigations are the focus of Wolf Bussian, while May 2025 partner appointment Charlotte Willemer is the name to note for restructuring and insolvency. Jan Erik Windthorst is a senior figure to note.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- ‘Large, competent team that covers all relevant specialist areas in an interdisciplinary manner. Good and trustworthy cooperation in the team and with the client. Available at short notice, fast, well-founded statements and capable of acting.’
- ‘Responsive, approachable at any time, very competent. Cope with extensive and complex issues. Quick, thorough research. Short, concise pleadings that get to the point. No unnecessary discussions that do not lead anywhere.’
Key clients
- Deutsche Bank AG
- Aloys Wobben Foundation
Work highlights
Defended a manufacturer of heavy commercial vehicles, ship and industrial engines against claims for damages in the aftermath of the truck cartel.


