McDermott Will & Schulte—Karen Butler

International law firm McDermott Will & Schulte has welcomed Karen Butler as a partner in its transactions practice group, based in London. Karen brings extensive experience advising major financial institutions, asset managers and corporations on complex UK and EU financial services regulatory matters, further strengthening the firm’s global transactional offering.

Harris Siskind, global head of the transactions practice group, said: ‘Karen’s arrival is a significant strategic enhancement to our global transactions team. Her sophisticated understanding of the UK and EU regulatory environment is precisely what our clients need to navigate the complexities of their most critical cross-border transactions.’

Karen advises on a wide range of financial services law, including FSMA, MiFID, and AIFMD, as well as corporate governance, custody, AML, capital requirements, and SFDR compliance. Recognised by The Legal 500 and Chambers and Partners as a leading practitioner, she has guided clients through regulatory change, licensing and compliance projects across derivatives, fund management, and financial promotions.

Aymen Mahmoud, managing partner of the London office, said: ‘Her reputation for excellence and deep-seated knowledge of the UK and European regulatory framework will be invaluable to our clients.’ Karen added: ‘I am incredibly excited to join McDermott Will & Schulte. The firm’s global platform and commitment to a top-tier regulatory practice make it the ideal environment to serve my clients and help them achieve their most ambitious goals.’