The group at White & Case LLP brings expertise across both buy‑side and sell‑side derivatives matters, with strong capabilities in financing and capital markets transactions. The firm is active across a wide range of industries, including energy, mining and metals, travel, automotive and financial services, and counts Société Générale, The Hertz Corporation and Microsoft Corporation among its notable clients. Regarded as an 'excellent partner' with a 'creative' approach, Ian Cuillerier heads the practice, regularly advising sponsors, borrowers, equity investors and lenders. His recent caseload includes interest‑rate derivatives transactions, regulatory advice and hedging arrangements, often involving multijurisdictional elements. The team was recently strengthened by the arrival of Rubi Ali, who joined from Jones Day in January 2026 and brings experience in advising financial institutions, investment funds and corporations on derivatives and fixed‑income transactions, as well as related regulatory issues. Other noteworthy individuals include Joseph Chen, who supports clients across a diverse range of matters. All individuals mentioned are based in New York.
Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • 'Sherri Snelson, David Ridley, and Ian Cuillerier are always available; do work personally, they are experts in their field, and are appropriately pragmatic.'

  • ‘Excellent, knowledgeable lawyers who are user-friendly.'

  • ‘White & Case is an excellent law firm and provides excellent service and advice.'

  • ‘We have worked a lot with Ian Cuillerier, partner at White & Case. He is an excellent partner. He always finds creative ways to solve problems. He is a subject matter expert, and his opinion is valued by our internal law team as well as our client's legal team. He has a very calming personality and that is critical to get complex trade over the line.'

Key clients

  • Alpha Generation
  • Atlas Renewable Energy
  • Brookfield Renewable Partners
  • LS Power
  • Mizuho
  • NRG Energy
  • Proyectos Globales de Energia y Servicios CME, S.A. De C.V.
  • Societe Generale
  • Talen Energy
  • The Hertz Corporation
  • Vale S.A.
  • Vantage Data Center

Lawyers

Leading partners

The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.

Practice head

Ian Cuillerier

Other key lawyers

Rubi Ali; Joseph Chen; Sherri Snelson; David Ridley